anthony.perard@citrix.com
2011-Jan-25 14:29 UTC
[Xen-devel] [PATCH V9 00/16] Xen device model support
From: Anthony PERARD <anthony.perard@citrix.com>
Hi,
This patch series adds Xen device model support in QEMU.
It rebased on qemu master and updated against the last Xen-unstable.
This series depends on the series "Introduce "machine"
QemuOpts".
You can find a git tree here:
git://xenbits.xen.org/people/aperard/qemu-dm.git qemu-dm-v9
Alexander Graf (1):
xen: Add a generic layer for xc calls
Anthony PERARD (12):
xen: Replace some tab-indents with spaces (clean-up).
xen: Make xen build only on x86 target.
xen: Support new libxc calls from xen unstable.
xen: Add xen_machine_fv
xen: Add initialisation of Xen
piix_pci: Introduces Xen specific call for irq.
xen: add a 8259 Interrupt Controller
configure: Always use 64bits target physical addresses with xen
enabled.
Introduce qemu_ram_ptr_unlock.
vl.c: Introduce getter for shutdown_requested and reset_requested.
xen: Set running state in xenstore.
acpi-piix4: Add Xen hypercall for sleep state.
Arun Sharma (1):
xen: Initialize event channels and io rings
Jun Nakajima (1):
xen: Introduce the Xen mapcache
Steven Smith (1):
xen: Add the Xen platform pci device
Makefile.objs | 4 -
Makefile.target | 17 ++-
configure | 71 ++++++-
cpu-common.h | 1 +
exec.c | 50 ++++-
hw/acpi_piix4.c | 4 +
hw/hw.h | 3 +
hw/pci_ids.h | 2 +
hw/piix_pci.c | 28 +++-
hw/xen.h | 34 +++
hw/xen_backend.c | 319 ++++++++++++++--------------
hw/xen_backend.h | 7 +-
hw/xen_common.h | 44 +++--
hw/xen_disk.c | 398 +++++++++++++++++-----------------
hw/xen_domainbuild.c | 2 +-
hw/xen_interfaces.c | 183 ++++++++++++++++
hw/xen_interfaces.h | 130 +++++++++++
hw/xen_machine_fv.c | 161 ++++++++++++++
hw/xen_nic.c | 222 ++++++++++----------
hw/xen_platform.c | 427 ++++++++++++++++++++++++++++++++++++
hw/xen_platform.h | 8 +
hw/xen_redirect.h | 58 +++++
sysemu.h | 2 +
vl.c | 12 +
xen-all.c | 581 ++++++++++++++++++++++++++++++++++++++++++++++++++
xen-mapcache-stub.c | 33 +++
xen-mapcache.c | 335 +++++++++++++++++++++++++++++
xen-mapcache.h | 14 ++
xen-stub.c | 38 ++++
29 files changed, 2685 insertions(+), 503 deletions(-)
create mode 100644 hw/xen_interfaces.c
create mode 100644 hw/xen_interfaces.h
create mode 100644 hw/xen_machine_fv.c
create mode 100644 hw/xen_platform.c
create mode 100644 hw/xen_platform.h
create mode 100644 hw/xen_redirect.h
create mode 100644 xen-all.c
create mode 100644 xen-mapcache-stub.c
create mode 100644 xen-mapcache.c
create mode 100644 xen-mapcache.h
create mode 100644 xen-stub.c
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xensource.com
http://lists.xensource.com/xen-devel
anthony.perard@citrix.com
2011-Jan-25 14:29 UTC
[Xen-devel] [PATCH V9 01/16] xen: Replace some tab-indents with spaces (clean-up).
From: Anthony PERARD <anthony.perard@citrix.com>
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
---
hw/xen_backend.c | 308 +++++++++++++++++++++---------------------
hw/xen_disk.c | 394 +++++++++++++++++++++++++++---------------------------
hw/xen_nic.c | 222 +++++++++++++++---------------
3 files changed, 462 insertions(+), 462 deletions(-)
diff --git a/hw/xen_backend.c b/hw/xen_backend.c
index a2e408f..860b038 100644
--- a/hw/xen_backend.c
+++ b/hw/xen_backend.c
@@ -59,7 +59,7 @@ int xenstore_write_str(const char *base, const char *node,
const char *val)
snprintf(abspath, sizeof(abspath), "%s/%s", base, node);
if (!xs_write(xenstore, 0, abspath, val, strlen(val)))
- return -1;
+ return -1;
return 0;
}
@@ -95,7 +95,7 @@ int xenstore_read_int(const char *base, const char *node, int
*ival)
val = xenstore_read_str(base, node);
if (val && 1 == sscanf(val, "%d", ival))
- rc = 0;
+ rc = 0;
qemu_free(val);
return rc;
}
@@ -134,16 +134,16 @@ int xenstore_read_fe_int(struct XenDevice *xendev, const
char *node, int *ival)
const char *xenbus_strstate(enum xenbus_state state)
{
- static const char *const name[] = {
- [ XenbusStateUnknown ] = "Unknown",
- [ XenbusStateInitialising ] = "Initialising",
- [ XenbusStateInitWait ] = "InitWait",
- [ XenbusStateInitialised ] = "Initialised",
- [ XenbusStateConnected ] = "Connected",
- [ XenbusStateClosing ] = "Closing",
- [ XenbusStateClosed ] = "Closed",
- };
- return (state < ARRAY_SIZE(name)) ? name[state] : "INVALID";
+ static const char *const name[] = {
+ [ XenbusStateUnknown ] = "Unknown",
+ [ XenbusStateInitialising ] = "Initialising",
+ [ XenbusStateInitWait ] = "InitWait",
+ [ XenbusStateInitialised ] = "Initialised",
+ [ XenbusStateConnected ] = "Connected",
+ [ XenbusStateClosing ] = "Closing",
+ [ XenbusStateClosed ] = "Closed",
+ };
+ return (state < ARRAY_SIZE(name)) ? name[state] : "INVALID";
}
int xen_be_set_state(struct XenDevice *xendev, enum xenbus_state state)
@@ -152,9 +152,9 @@ int xen_be_set_state(struct XenDevice *xendev, enum
xenbus_state state)
rc = xenstore_write_be_int(xendev, "state", state);
if (rc < 0)
- return rc;
+ return rc;
xen_be_printf(xendev, 1, "backend state: %s -> %s\n",
- xenbus_strstate(xendev->be_state), xenbus_strstate(state));
+ xenbus_strstate(xendev->be_state),
xenbus_strstate(state));
xendev->be_state = state;
return 0;
}
@@ -166,13 +166,13 @@ struct XenDevice *xen_be_find_xendev(const char *type, int
dom, int dev)
struct XenDevice *xendev;
QTAILQ_FOREACH(xendev, &xendevs, next) {
- if (xendev->dom != dom)
- continue;
- if (xendev->dev != dev)
- continue;
- if (strcmp(xendev->type, type) != 0)
- continue;
- return xendev;
+ if (xendev->dom != dom)
+ continue;
+ if (xendev->dev != dev)
+ continue;
+ if (strcmp(xendev->type, type) != 0)
+ continue;
+ return xendev;
}
return NULL;
}
@@ -188,7 +188,7 @@ static struct XenDevice *xen_be_get_xendev(const char *type,
int dom, int dev,
xendev = xen_be_find_xendev(type, dom, dev);
if (xendev)
- return xendev;
+ return xendev;
/* init new xendev */
xendev = qemu_mallocz(ops->size);
@@ -199,9 +199,9 @@ static struct XenDevice *xen_be_get_xendev(const char *type,
int dom, int dev,
dom0 = xs_get_domain_path(xenstore, 0);
snprintf(xendev->be, sizeof(xendev->be),
"%s/backend/%s/%d/%d",
- dom0, xendev->type, xendev->dom, xendev->dev);
+ dom0, xendev->type, xendev->dom, xendev->dev);
snprintf(xendev->name, sizeof(xendev->name), "%s-%d",
- xendev->type, xendev->dev);
+ xendev->type, xendev->dev);
free(dom0);
xendev->debug = debug;
@@ -209,28 +209,28 @@ static struct XenDevice *xen_be_get_xendev(const char
*type, int dom, int dev,
xendev->evtchndev = xc_evtchn_open();
if (xendev->evtchndev < 0) {
- xen_be_printf(NULL, 0, "can''t open evtchn device\n");
- qemu_free(xendev);
- return NULL;
+ xen_be_printf(NULL, 0, "can''t open evtchn
device\n");
+ qemu_free(xendev);
+ return NULL;
}
fcntl(xc_evtchn_fd(xendev->evtchndev), F_SETFD, FD_CLOEXEC);
if (ops->flags & DEVOPS_FLAG_NEED_GNTDEV) {
- xendev->gnttabdev = xc_gnttab_open();
- if (xendev->gnttabdev < 0) {
- xen_be_printf(NULL, 0, "can''t open gnttab device\n");
- xc_evtchn_close(xendev->evtchndev);
- qemu_free(xendev);
- return NULL;
- }
+ xendev->gnttabdev = xc_gnttab_open();
+ if (xendev->gnttabdev < 0) {
+ xen_be_printf(NULL, 0, "can''t open gnttab
device\n");
+ xc_evtchn_close(xendev->evtchndev);
+ qemu_free(xendev);
+ return NULL;
+ }
} else {
- xendev->gnttabdev = -1;
+ xendev->gnttabdev = -1;
}
QTAILQ_INSERT_TAIL(&xendevs, xendev, next);
if (xendev->ops->alloc)
- xendev->ops->alloc(xendev);
+ xendev->ops->alloc(xendev);
return xendev;
}
@@ -251,28 +251,28 @@ static struct XenDevice *xen_be_del_xendev(int dom, int
dev)
xendev = xnext;
xnext = xendev->next.tqe_next;
- if (xendev->dom != dom)
- continue;
- if (xendev->dev != dev && dev != -1)
- continue;
+ if (xendev->dom != dom)
+ continue;
+ if (xendev->dev != dev && dev != -1)
+ continue;
- if (xendev->ops->free)
- xendev->ops->free(xendev);
+ if (xendev->ops->free)
+ xendev->ops->free(xendev);
- if (xendev->fe) {
- char token[XEN_BUFSIZE];
- snprintf(token, sizeof(token), "fe:%p", xendev);
- xs_unwatch(xenstore, xendev->fe, token);
- qemu_free(xendev->fe);
- }
+ if (xendev->fe) {
+ char token[XEN_BUFSIZE];
+ snprintf(token, sizeof(token), "fe:%p", xendev);
+ xs_unwatch(xenstore, xendev->fe, token);
+ qemu_free(xendev->fe);
+ }
- if (xendev->evtchndev >= 0)
- xc_evtchn_close(xendev->evtchndev);
- if (xendev->gnttabdev >= 0)
- xc_gnttab_close(xendev->gnttabdev);
+ if (xendev->evtchndev >= 0)
+ xc_evtchn_close(xendev->evtchndev);
+ if (xendev->gnttabdev >= 0)
+ xc_gnttab_close(xendev->gnttabdev);
- QTAILQ_REMOVE(&xendevs, xendev, next);
- qemu_free(xendev);
+ QTAILQ_REMOVE(&xendevs, xendev, next);
+ qemu_free(xendev);
}
return NULL;
}
@@ -285,14 +285,14 @@ static struct XenDevice *xen_be_del_xendev(int dom, int
dev)
static void xen_be_backend_changed(struct XenDevice *xendev, const char *node)
{
if (node == NULL || strcmp(node, "online") == 0) {
- if (xenstore_read_be_int(xendev, "online", &xendev->online)
== -1)
- xendev->online = 0;
+ if (xenstore_read_be_int(xendev, "online",
&xendev->online) == -1)
+ xendev->online = 0;
}
if (node) {
- xen_be_printf(xendev, 2, "backend update: %s\n", node);
- if (xendev->ops->backend_changed)
- xendev->ops->backend_changed(xendev, node);
+ xen_be_printf(xendev, 2, "backend update: %s\n", node);
+ if (xendev->ops->backend_changed)
+ xendev->ops->backend_changed(xendev, node);
}
}
@@ -301,25 +301,25 @@ static void xen_be_frontend_changed(struct XenDevice
*xendev, const char *node)
int fe_state;
if (node == NULL || strcmp(node, "state") == 0) {
- if (xenstore_read_fe_int(xendev, "state", &fe_state) == -1)
- fe_state = XenbusStateUnknown;
- if (xendev->fe_state != fe_state)
- xen_be_printf(xendev, 1, "frontend state: %s -> %s\n",
- xenbus_strstate(xendev->fe_state),
- xenbus_strstate(fe_state));
- xendev->fe_state = fe_state;
+ if (xenstore_read_fe_int(xendev, "state", &fe_state) ==
-1)
+ fe_state = XenbusStateUnknown;
+ if (xendev->fe_state != fe_state)
+ xen_be_printf(xendev, 1, "frontend state: %s -> %s\n",
+ xenbus_strstate(xendev->fe_state),
+ xenbus_strstate(fe_state));
+ xendev->fe_state = fe_state;
}
if (node == NULL || strcmp(node, "protocol") == 0) {
- qemu_free(xendev->protocol);
- xendev->protocol = xenstore_read_fe_str(xendev, "protocol");
- if (xendev->protocol)
- xen_be_printf(xendev, 1, "frontend protocol: %s\n",
xendev->protocol);
+ qemu_free(xendev->protocol);
+ xendev->protocol = xenstore_read_fe_str(xendev,
"protocol");
+ if (xendev->protocol)
+ xen_be_printf(xendev, 1, "frontend protocol: %s\n",
xendev->protocol);
}
if (node) {
- xen_be_printf(xendev, 2, "frontend update: %s\n", node);
- if (xendev->ops->frontend_changed)
- xendev->ops->frontend_changed(xendev, node);
+ xen_be_printf(xendev, 2, "frontend update: %s\n", node);
+ if (xendev->ops->frontend_changed)
+ xendev->ops->frontend_changed(xendev, node);
}
}
@@ -340,28 +340,28 @@ static int xen_be_try_setup(struct XenDevice *xendev)
int be_state;
if (xenstore_read_be_int(xendev, "state", &be_state) == -1) {
- xen_be_printf(xendev, 0, "reading backend state failed\n");
- return -1;
+ xen_be_printf(xendev, 0, "reading backend state failed\n");
+ return -1;
}
if (be_state != XenbusStateInitialising) {
- xen_be_printf(xendev, 0, "initial backend state is wrong (%s)\n",
- xenbus_strstate(be_state));
- return -1;
+ xen_be_printf(xendev, 0, "initial backend state is wrong
(%s)\n",
+ xenbus_strstate(be_state));
+ return -1;
}
xendev->fe = xenstore_read_be_str(xendev, "frontend");
if (xendev->fe == NULL) {
- xen_be_printf(xendev, 0, "reading frontend path failed\n");
- return -1;
+ xen_be_printf(xendev, 0, "reading frontend path failed\n");
+ return -1;
}
/* setup frontend watch */
snprintf(token, sizeof(token), "fe:%p", xendev);
if (!xs_watch(xenstore, xendev->fe, token)) {
- xen_be_printf(xendev, 0, "watching frontend path (%s) failed\n",
- xendev->fe);
- return -1;
+ xen_be_printf(xendev, 0, "watching frontend path (%s)
failed\n",
+ xendev->fe);
+ return -1;
}
xen_be_set_state(xendev, XenbusStateInitialising);
@@ -383,15 +383,15 @@ static int xen_be_try_init(struct XenDevice *xendev)
int rc = 0;
if (!xendev->online) {
- xen_be_printf(xendev, 1, "not online\n");
- return -1;
+ xen_be_printf(xendev, 1, "not online\n");
+ return -1;
}
if (xendev->ops->init)
- rc = xendev->ops->init(xendev);
+ rc = xendev->ops->init(xendev);
if (rc != 0) {
- xen_be_printf(xendev, 1, "init() failed\n");
- return rc;
+ xen_be_printf(xendev, 1, "init() failed\n");
+ return rc;
}
xenstore_write_be_str(xendev, "hotplug-status",
"connected");
@@ -411,20 +411,20 @@ static int xen_be_try_connect(struct XenDevice *xendev)
int rc = 0;
if (xendev->fe_state != XenbusStateInitialised &&
- xendev->fe_state != XenbusStateConnected) {
- if (xendev->ops->flags & DEVOPS_FLAG_IGNORE_STATE) {
- xen_be_printf(xendev, 2, "frontend not ready, ignoring\n");
- } else {
- xen_be_printf(xendev, 2, "frontend not ready (yet)\n");
- return -1;
- }
+ xendev->fe_state != XenbusStateConnected) {
+ if (xendev->ops->flags & DEVOPS_FLAG_IGNORE_STATE) {
+ xen_be_printf(xendev, 2, "frontend not ready,
ignoring\n");
+ } else {
+ xen_be_printf(xendev, 2, "frontend not ready (yet)\n");
+ return -1;
+ }
}
if (xendev->ops->connect)
- rc = xendev->ops->connect(xendev);
+ rc = xendev->ops->connect(xendev);
if (rc != 0) {
- xen_be_printf(xendev, 0, "connect() failed\n");
- return rc;
+ xen_be_printf(xendev, 0, "connect() failed\n");
+ return rc;
}
xen_be_set_state(xendev, XenbusStateConnected);
@@ -441,7 +441,7 @@ static void xen_be_disconnect(struct XenDevice *xendev, enum
xenbus_state state)
if (xendev->be_state != XenbusStateClosing &&
xendev->be_state != XenbusStateClosed &&
xendev->ops->disconnect)
- xendev->ops->disconnect(xendev);
+ xendev->ops->disconnect(xendev);
if (xendev->be_state != state)
xen_be_set_state(xendev, state);
}
@@ -468,31 +468,31 @@ void xen_be_check_state(struct XenDevice *xendev)
/* frontend may request shutdown from almost anywhere */
if (xendev->fe_state == XenbusStateClosing ||
- xendev->fe_state == XenbusStateClosed) {
- xen_be_disconnect(xendev, xendev->fe_state);
- return;
+ xendev->fe_state == XenbusStateClosed) {
+ xen_be_disconnect(xendev, xendev->fe_state);
+ return;
}
/* check for possible backend state transitions */
for (;;) {
- switch (xendev->be_state) {
- case XenbusStateUnknown:
- rc = xen_be_try_setup(xendev);
- break;
- case XenbusStateInitialising:
- rc = xen_be_try_init(xendev);
- break;
- case XenbusStateInitWait:
- rc = xen_be_try_connect(xendev);
- break;
+ switch (xendev->be_state) {
+ case XenbusStateUnknown:
+ rc = xen_be_try_setup(xendev);
+ break;
+ case XenbusStateInitialising:
+ rc = xen_be_try_init(xendev);
+ break;
+ case XenbusStateInitWait:
+ rc = xen_be_try_connect(xendev);
+ break;
case XenbusStateClosed:
rc = xen_be_try_reset(xendev);
break;
- default:
- rc = -1;
- }
- if (rc != 0)
- break;
+ default:
+ rc = -1;
+ }
+ if (rc != 0)
+ break;
}
}
@@ -511,26 +511,26 @@ static int xenstore_scan(const char *type, int dom, struct
XenDevOps *ops)
snprintf(path, sizeof(path), "%s/backend/%s/%d", dom0, type,
dom);
free(dom0);
if (!xs_watch(xenstore, path, token)) {
- xen_be_printf(NULL, 0, "xen be: watching backend path (%s)
failed\n", path);
- return -1;
+ xen_be_printf(NULL, 0, "xen be: watching backend path (%s)
failed\n", path);
+ return -1;
}
/* look for backends */
dev = xs_directory(xenstore, 0, path, &cdev);
if (!dev)
- return 0;
+ return 0;
for (j = 0; j < cdev; j++) {
- xendev = xen_be_get_xendev(type, dom, atoi(dev[j]), ops);
- if (xendev == NULL)
- continue;
- xen_be_check_state(xendev);
+ xendev = xen_be_get_xendev(type, dom, atoi(dev[j]), ops);
+ if (xendev == NULL)
+ continue;
+ xen_be_check_state(xendev);
}
free(dev);
return 0;
}
static void xenstore_update_be(char *watch, char *type, int dom,
- struct XenDevOps *ops)
+ struct XenDevOps *ops)
{
struct XenDevice *xendev;
char path[XEN_BUFSIZE], *dom0;
@@ -540,24 +540,24 @@ static void xenstore_update_be(char *watch, char *type,
int dom,
len = snprintf(path, sizeof(path), "%s/backend/%s/%d", dom0,
type, dom);
free(dom0);
if (strncmp(path, watch, len) != 0)
- return;
+ return;
if (sscanf(watch+len, "/%u/%255s", &dev, path) != 2) {
- strcpy(path, "");
- if (sscanf(watch+len, "/%u", &dev) != 1)
- dev = -1;
+ strcpy(path, "");
+ if (sscanf(watch+len, "/%u", &dev) != 1)
+ dev = -1;
}
if (dev == -1)
- return;
+ return;
if (0) {
- /* FIXME: detect devices being deleted from xenstore ... */
- xen_be_del_xendev(dom, dev);
+ /* FIXME: detect devices being deleted from xenstore ... */
+ xen_be_del_xendev(dom, dev);
}
xendev = xen_be_get_xendev(type, dom, dev, ops);
if (xendev != NULL) {
- xen_be_backend_changed(xendev, path);
- xen_be_check_state(xendev);
+ xen_be_backend_changed(xendev, path);
+ xen_be_check_state(xendev);
}
}
@@ -568,9 +568,9 @@ static void xenstore_update_fe(char *watch, struct XenDevice
*xendev)
len = strlen(xendev->fe);
if (strncmp(xendev->fe, watch, len) != 0)
- return;
+ return;
if (watch[len] != ''/'')
- return;
+ return;
node = watch + len + 1;
xen_be_frontend_changed(xendev, node);
@@ -585,13 +585,13 @@ static void xenstore_update(void *unused)
vec = xs_read_watch(xenstore, &count);
if (vec == NULL)
- goto cleanup;
+ goto cleanup;
if (sscanf(vec[XS_WATCH_TOKEN], "be:%" PRIxPTR ":%d:%"
PRIxPTR,
&type, &dom, &ops) == 3)
- xenstore_update_be(vec[XS_WATCH_PATH], (void*)type, dom, (void*)ops);
+ xenstore_update_be(vec[XS_WATCH_PATH], (void*)type, dom, (void*)ops);
if (sscanf(vec[XS_WATCH_TOKEN], "fe:%" PRIxPTR, &ptr) == 1)
- xenstore_update_fe(vec[XS_WATCH_PATH], (void*)ptr);
+ xenstore_update_fe(vec[XS_WATCH_PATH], (void*)ptr);
cleanup:
free(vec);
@@ -604,14 +604,14 @@ static void xen_be_evtchn_event(void *opaque)
port = xc_evtchn_pending(xendev->evtchndev);
if (port != xendev->local_port) {
- xen_be_printf(xendev, 0, "xc_evtchn_pending returned %d (expected
%d)\n",
- port, xendev->local_port);
- return;
+ xen_be_printf(xendev, 0, "xc_evtchn_pending returned %d (expected
%d)\n",
+ port, xendev->local_port);
+ return;
}
xc_evtchn_unmask(xendev->evtchndev, port);
if (xendev->ops->event)
- xendev->ops->event(xendev);
+ xendev->ops->event(xendev);
}
/* -------------------------------------------------------------------- */
@@ -620,17 +620,17 @@ int xen_be_init(void)
{
xenstore = xs_daemon_open();
if (!xenstore) {
- xen_be_printf(NULL, 0, "can''t connect to xenstored\n");
- return -1;
+ xen_be_printf(NULL, 0, "can''t connect to
xenstored\n");
+ return -1;
}
if (qemu_set_fd_handler(xs_fileno(xenstore), xenstore_update, NULL, NULL)
< 0)
- goto err;
+ goto err;
xen_xc = xc_interface_open();
if (xen_xc == -1) {
- xen_be_printf(NULL, 0, "can''t open xen interface\n");
- goto err;
+ xen_be_printf(NULL, 0, "can''t open xen
interface\n");
+ goto err;
}
return 0;
@@ -650,23 +650,23 @@ int xen_be_register(const char *type, struct XenDevOps
*ops)
int xen_be_bind_evtchn(struct XenDevice *xendev)
{
if (xendev->local_port != -1)
- return 0;
+ return 0;
xendev->local_port = xc_evtchn_bind_interdomain
- (xendev->evtchndev, xendev->dom, xendev->remote_port);
+ (xendev->evtchndev, xendev->dom, xendev->remote_port);
if (xendev->local_port == -1) {
- xen_be_printf(xendev, 0, "xc_evtchn_bind_interdomain failed\n");
- return -1;
+ xen_be_printf(xendev, 0, "xc_evtchn_bind_interdomain
failed\n");
+ return -1;
}
xen_be_printf(xendev, 2, "bind evtchn port %d\n",
xendev->local_port);
qemu_set_fd_handler(xc_evtchn_fd(xendev->evtchndev),
- xen_be_evtchn_event, NULL, xendev);
+ xen_be_evtchn_event, NULL, xendev);
return 0;
}
void xen_be_unbind_evtchn(struct XenDevice *xendev)
{
if (xendev->local_port == -1)
- return;
+ return;
qemu_set_fd_handler(xc_evtchn_fd(xendev->evtchndev), NULL, NULL, NULL);
xc_evtchn_unbind(xendev->evtchndev, xendev->local_port);
xen_be_printf(xendev, 2, "unbind evtchn port %d\n",
xendev->local_port);
diff --git a/hw/xen_disk.c b/hw/xen_disk.c
index ed9e5eb..7f6aaca 100644
--- a/hw/xen_disk.c
+++ b/hw/xen_disk.c
@@ -120,17 +120,17 @@ static struct ioreq *ioreq_start(struct XenBlkDev *blkdev)
struct ioreq *ioreq = NULL;
if (QLIST_EMPTY(&blkdev->freelist)) {
- if (blkdev->requests_total >= max_requests)
- goto out;
- /* allocate new struct */
- ioreq = qemu_mallocz(sizeof(*ioreq));
- ioreq->blkdev = blkdev;
- blkdev->requests_total++;
+ if (blkdev->requests_total >= max_requests)
+ goto out;
+ /* allocate new struct */
+ ioreq = qemu_mallocz(sizeof(*ioreq));
+ ioreq->blkdev = blkdev;
+ blkdev->requests_total++;
qemu_iovec_init(&ioreq->v, BLKIF_MAX_SEGMENTS_PER_REQUEST);
} else {
- /* get one from freelist */
- ioreq = QLIST_FIRST(&blkdev->freelist);
- QLIST_REMOVE(ioreq, list);
+ /* get one from freelist */
+ ioreq = QLIST_FIRST(&blkdev->freelist);
+ QLIST_REMOVE(ioreq, list);
qemu_iovec_reset(&ioreq->v);
}
QLIST_INSERT_HEAD(&blkdev->inflight, ioreq, list);
@@ -173,30 +173,30 @@ static int ioreq_parse(struct ioreq *ioreq)
int i;
xen_be_printf(&blkdev->xendev, 3,
- "op %d, nr %d, handle %d, id %" PRId64 ", sector %"
PRId64 "\n",
- ioreq->req.operation, ioreq->req.nr_segments,
- ioreq->req.handle, ioreq->req.id, ioreq->req.sector_number);
+ "op %d, nr %d, handle %d, id %" PRId64 ",
sector %" PRId64 "\n",
+ ioreq->req.operation, ioreq->req.nr_segments,
+ ioreq->req.handle, ioreq->req.id,
ioreq->req.sector_number);
switch (ioreq->req.operation) {
case BLKIF_OP_READ:
- ioreq->prot = PROT_WRITE; /* to memory */
- break;
+ ioreq->prot = PROT_WRITE; /* to memory */
+ break;
case BLKIF_OP_WRITE_BARRIER:
if (!ioreq->req.nr_segments) {
ioreq->presync = 1;
return 0;
}
- if (!syncwrite)
- ioreq->presync = ioreq->postsync = 1;
- /* fall through */
+ if (!syncwrite)
+ ioreq->presync = ioreq->postsync = 1;
+ /* fall through */
case BLKIF_OP_WRITE:
- ioreq->prot = PROT_READ; /* from memory */
- if (syncwrite)
- ioreq->postsync = 1;
- break;
+ ioreq->prot = PROT_READ; /* from memory */
+ if (syncwrite)
+ ioreq->postsync = 1;
+ break;
default:
- xen_be_printf(&blkdev->xendev, 0, "error: unknown operation
(%d)\n",
- ioreq->req.operation);
- goto err;
+ xen_be_printf(&blkdev->xendev, 0, "error: unknown operation
(%d)\n",
+ ioreq->req.operation);
+ goto err;
};
if (ioreq->req.operation != BLKIF_OP_READ && blkdev->mode[0]
!= ''w'') {
@@ -206,29 +206,29 @@ static int ioreq_parse(struct ioreq *ioreq)
ioreq->start = ioreq->req.sector_number * blkdev->file_blk;
for (i = 0; i < ioreq->req.nr_segments; i++) {
- if (i == BLKIF_MAX_SEGMENTS_PER_REQUEST) {
- xen_be_printf(&blkdev->xendev, 0, "error: nr_segments too
big\n");
- goto err;
- }
- if (ioreq->req.seg[i].first_sect > ioreq->req.seg[i].last_sect) {
- xen_be_printf(&blkdev->xendev, 0, "error: first > last
sector\n");
- goto err;
- }
- if (ioreq->req.seg[i].last_sect * BLOCK_SIZE >= XC_PAGE_SIZE) {
- xen_be_printf(&blkdev->xendev, 0, "error: page
crossing\n");
- goto err;
- }
-
- ioreq->domids[i] = blkdev->xendev.dom;
- ioreq->refs[i] = ioreq->req.seg[i].gref;
-
- mem = ioreq->req.seg[i].first_sect * blkdev->file_blk;
- len = (ioreq->req.seg[i].last_sect - ioreq->req.seg[i].first_sect + 1) *
blkdev->file_blk;
+ if (i == BLKIF_MAX_SEGMENTS_PER_REQUEST) {
+ xen_be_printf(&blkdev->xendev, 0, "error: nr_segments
too big\n");
+ goto err;
+ }
+ if (ioreq->req.seg[i].first_sect >
ioreq->req.seg[i].last_sect) {
+ xen_be_printf(&blkdev->xendev, 0, "error: first >
last sector\n");
+ goto err;
+ }
+ if (ioreq->req.seg[i].last_sect * BLOCK_SIZE >= XC_PAGE_SIZE) {
+ xen_be_printf(&blkdev->xendev, 0, "error: page
crossing\n");
+ goto err;
+ }
+
+ ioreq->domids[i] = blkdev->xendev.dom;
+ ioreq->refs[i] = ioreq->req.seg[i].gref;
+
+ mem = ioreq->req.seg[i].first_sect * blkdev->file_blk;
+ len = (ioreq->req.seg[i].last_sect - ioreq->req.seg[i].first_sect
+ 1) * blkdev->file_blk;
qemu_iovec_add(&ioreq->v, (void*)mem, len);
}
if (ioreq->start + ioreq->v.size > blkdev->file_size) {
- xen_be_printf(&blkdev->xendev, 0, "error: access beyond end of
file\n");
- goto err;
+ xen_be_printf(&blkdev->xendev, 0, "error: access beyond end
of file\n");
+ goto err;
}
return 0;
@@ -245,23 +245,23 @@ static void ioreq_unmap(struct ioreq *ioreq)
if (ioreq->v.niov == 0)
return;
if (batch_maps) {
- if (!ioreq->pages)
- return;
- if (xc_gnttab_munmap(gnt, ioreq->pages, ioreq->v.niov) != 0)
- xen_be_printf(&ioreq->blkdev->xendev, 0, "xc_gnttab_munmap
failed: %s\n",
- strerror(errno));
- ioreq->blkdev->cnt_map -= ioreq->v.niov;
- ioreq->pages = NULL;
+ if (!ioreq->pages)
+ return;
+ if (xc_gnttab_munmap(gnt, ioreq->pages, ioreq->v.niov) != 0)
+ xen_be_printf(&ioreq->blkdev->xendev, 0,
"xc_gnttab_munmap failed: %s\n",
+ strerror(errno));
+ ioreq->blkdev->cnt_map -= ioreq->v.niov;
+ ioreq->pages = NULL;
} else {
- for (i = 0; i < ioreq->v.niov; i++) {
- if (!ioreq->page[i])
- continue;
- if (xc_gnttab_munmap(gnt, ioreq->page[i], 1) != 0)
- xen_be_printf(&ioreq->blkdev->xendev, 0, "xc_gnttab_munmap
failed: %s\n",
- strerror(errno));
- ioreq->blkdev->cnt_map--;
- ioreq->page[i] = NULL;
- }
+ for (i = 0; i < ioreq->v.niov; i++) {
+ if (!ioreq->page[i])
+ continue;
+ if (xc_gnttab_munmap(gnt, ioreq->page[i], 1) != 0)
+ xen_be_printf(&ioreq->blkdev->xendev, 0,
"xc_gnttab_munmap failed: %s\n",
+ strerror(errno));
+ ioreq->blkdev->cnt_map--;
+ ioreq->page[i] = NULL;
+ }
}
}
@@ -273,32 +273,32 @@ static int ioreq_map(struct ioreq *ioreq)
if (ioreq->v.niov == 0)
return 0;
if (batch_maps) {
- ioreq->pages = xc_gnttab_map_grant_refs
- (gnt, ioreq->v.niov, ioreq->domids, ioreq->refs, ioreq->prot);
- if (ioreq->pages == NULL) {
- xen_be_printf(&ioreq->blkdev->xendev, 0,
- "can''t map %d grant refs (%s, %d maps)\n",
- ioreq->v.niov, strerror(errno), ioreq->blkdev->cnt_map);
- return -1;
- }
- for (i = 0; i < ioreq->v.niov; i++)
- ioreq->v.iov[i].iov_base = ioreq->pages + i * XC_PAGE_SIZE +
- (uintptr_t)ioreq->v.iov[i].iov_base;
- ioreq->blkdev->cnt_map += ioreq->v.niov;
+ ioreq->pages = xc_gnttab_map_grant_refs
+ (gnt, ioreq->v.niov, ioreq->domids, ioreq->refs,
ioreq->prot);
+ if (ioreq->pages == NULL) {
+ xen_be_printf(&ioreq->blkdev->xendev, 0,
+ "can''t map %d grant refs (%s, %d
maps)\n",
+ ioreq->v.niov, strerror(errno),
ioreq->blkdev->cnt_map);
+ return -1;
+ }
+ for (i = 0; i < ioreq->v.niov; i++)
+ ioreq->v.iov[i].iov_base = ioreq->pages + i * XC_PAGE_SIZE +
+ (uintptr_t)ioreq->v.iov[i].iov_base;
+ ioreq->blkdev->cnt_map += ioreq->v.niov;
} else {
- for (i = 0; i < ioreq->v.niov; i++) {
- ioreq->page[i] = xc_gnttab_map_grant_ref
- (gnt, ioreq->domids[i], ioreq->refs[i], ioreq->prot);
- if (ioreq->page[i] == NULL) {
- xen_be_printf(&ioreq->blkdev->xendev, 0,
- "can''t map grant ref %d (%s, %d maps)\n",
- ioreq->refs[i], strerror(errno), ioreq->blkdev->cnt_map);
- ioreq_unmap(ioreq);
- return -1;
- }
- ioreq->v.iov[i].iov_base = ioreq->page[i] +
(uintptr_t)ioreq->v.iov[i].iov_base;
- ioreq->blkdev->cnt_map++;
- }
+ for (i = 0; i < ioreq->v.niov; i++) {
+ ioreq->page[i] = xc_gnttab_map_grant_ref
+ (gnt, ioreq->domids[i], ioreq->refs[i], ioreq->prot);
+ if (ioreq->page[i] == NULL) {
+ xen_be_printf(&ioreq->blkdev->xendev, 0,
+ "can''t map grant ref %d (%s, %d
maps)\n",
+ ioreq->refs[i], strerror(errno),
ioreq->blkdev->cnt_map);
+ ioreq_unmap(ioreq);
+ return -1;
+ }
+ ioreq->v.iov[i].iov_base = ioreq->page[i] +
(uintptr_t)ioreq->v.iov[i].iov_base;
+ ioreq->blkdev->cnt_map++;
+ }
}
return 0;
}
@@ -310,53 +310,53 @@ static int ioreq_runio_qemu_sync(struct ioreq *ioreq)
off_t pos;
if (ioreq->req.nr_segments && ioreq_map(ioreq) == -1)
- goto err;
+ goto err;
if (ioreq->presync)
- bdrv_flush(blkdev->bs);
+ bdrv_flush(blkdev->bs);
switch (ioreq->req.operation) {
case BLKIF_OP_READ:
- pos = ioreq->start;
- for (i = 0; i < ioreq->v.niov; i++) {
- rc = bdrv_read(blkdev->bs, pos / BLOCK_SIZE,
- ioreq->v.iov[i].iov_base,
- ioreq->v.iov[i].iov_len / BLOCK_SIZE);
- if (rc != 0) {
- xen_be_printf(&blkdev->xendev, 0, "rd I/O error (%p, len
%zd)\n",
- ioreq->v.iov[i].iov_base,
- ioreq->v.iov[i].iov_len);
- goto err;
- }
- len += ioreq->v.iov[i].iov_len;
- pos += ioreq->v.iov[i].iov_len;
- }
- break;
+ pos = ioreq->start;
+ for (i = 0; i < ioreq->v.niov; i++) {
+ rc = bdrv_read(blkdev->bs, pos / BLOCK_SIZE,
+ ioreq->v.iov[i].iov_base,
+ ioreq->v.iov[i].iov_len / BLOCK_SIZE);
+ if (rc != 0) {
+ xen_be_printf(&blkdev->xendev, 0, "rd I/O error
(%p, len %zd)\n",
+ ioreq->v.iov[i].iov_base,
+ ioreq->v.iov[i].iov_len);
+ goto err;
+ }
+ len += ioreq->v.iov[i].iov_len;
+ pos += ioreq->v.iov[i].iov_len;
+ }
+ break;
case BLKIF_OP_WRITE:
case BLKIF_OP_WRITE_BARRIER:
if (!ioreq->req.nr_segments)
break;
- pos = ioreq->start;
- for (i = 0; i < ioreq->v.niov; i++) {
- rc = bdrv_write(blkdev->bs, pos / BLOCK_SIZE,
- ioreq->v.iov[i].iov_base,
- ioreq->v.iov[i].iov_len / BLOCK_SIZE);
- if (rc != 0) {
- xen_be_printf(&blkdev->xendev, 0, "wr I/O error (%p, len
%zd)\n",
- ioreq->v.iov[i].iov_base,
- ioreq->v.iov[i].iov_len);
- goto err;
- }
- len += ioreq->v.iov[i].iov_len;
- pos += ioreq->v.iov[i].iov_len;
- }
- break;
+ pos = ioreq->start;
+ for (i = 0; i < ioreq->v.niov; i++) {
+ rc = bdrv_write(blkdev->bs, pos / BLOCK_SIZE,
+ ioreq->v.iov[i].iov_base,
+ ioreq->v.iov[i].iov_len / BLOCK_SIZE);
+ if (rc != 0) {
+ xen_be_printf(&blkdev->xendev, 0, "wr I/O error
(%p, len %zd)\n",
+ ioreq->v.iov[i].iov_base,
+ ioreq->v.iov[i].iov_len);
+ goto err;
+ }
+ len += ioreq->v.iov[i].iov_len;
+ pos += ioreq->v.iov[i].iov_len;
+ }
+ break;
default:
- /* unknown operation (shouldn''t happen -- parse catches this) */
- goto err;
+ /* unknown operation (shouldn''t happen -- parse catches this)
*/
+ goto err;
}
if (ioreq->postsync)
- bdrv_flush(blkdev->bs);
+ bdrv_flush(blkdev->bs);
ioreq->status = BLKIF_RSP_OKAY;
ioreq_unmap(ioreq);
@@ -393,11 +393,11 @@ static int ioreq_runio_qemu_aio(struct ioreq *ioreq)
struct XenBlkDev *blkdev = ioreq->blkdev;
if (ioreq->req.nr_segments && ioreq_map(ioreq) == -1)
- goto err;
+ goto err;
ioreq->aio_inflight++;
if (ioreq->presync)
- bdrv_flush(blkdev->bs); /* FIXME: aio_flush() ??? */
+ bdrv_flush(blkdev->bs); /* FIXME: aio_flush() ??? */
switch (ioreq->req.operation) {
case BLKIF_OP_READ:
@@ -405,7 +405,7 @@ static int ioreq_runio_qemu_aio(struct ioreq *ioreq)
bdrv_aio_readv(blkdev->bs, ioreq->start / BLOCK_SIZE,
&ioreq->v, ioreq->v.size / BLOCK_SIZE,
qemu_aio_complete, ioreq);
- break;
+ break;
case BLKIF_OP_WRITE:
case BLKIF_OP_WRITE_BARRIER:
ioreq->aio_inflight++;
@@ -414,14 +414,14 @@ static int ioreq_runio_qemu_aio(struct ioreq *ioreq)
bdrv_aio_writev(blkdev->bs, ioreq->start / BLOCK_SIZE,
&ioreq->v, ioreq->v.size / BLOCK_SIZE,
qemu_aio_complete, ioreq);
- break;
+ break;
default:
- /* unknown operation (shouldn''t happen -- parse catches this) */
- goto err;
+ /* unknown operation (shouldn''t happen -- parse catches this)
*/
+ goto err;
}
if (ioreq->postsync)
- bdrv_flush(blkdev->bs); /* FIXME: aio_flush() ??? */
+ bdrv_flush(blkdev->bs); /* FIXME: aio_flush() ??? */
qemu_aio_complete(ioreq, 0);
return 0;
@@ -446,36 +446,36 @@ static int blk_send_response_one(struct ioreq *ioreq)
/* Place on the response ring for the relevant domain. */
switch (blkdev->protocol) {
case BLKIF_PROTOCOL_NATIVE:
- dst = RING_GET_RESPONSE(&blkdev->rings.native,
blkdev->rings.native.rsp_prod_pvt);
- break;
+ dst = RING_GET_RESPONSE(&blkdev->rings.native,
blkdev->rings.native.rsp_prod_pvt);
+ break;
case BLKIF_PROTOCOL_X86_32:
dst = RING_GET_RESPONSE(&blkdev->rings.x86_32_part,
blkdev->rings.x86_32_part.rsp_prod_pvt);
- break;
+ break;
case BLKIF_PROTOCOL_X86_64:
dst = RING_GET_RESPONSE(&blkdev->rings.x86_64_part,
blkdev->rings.x86_64_part.rsp_prod_pvt);
- break;
+ break;
default:
- dst = NULL;
+ dst = NULL;
}
memcpy(dst, &resp, sizeof(resp));
blkdev->rings.common.rsp_prod_pvt++;
RING_PUSH_RESPONSES_AND_CHECK_NOTIFY(&blkdev->rings.common,
send_notify);
if (blkdev->rings.common.rsp_prod_pvt ==
blkdev->rings.common.req_cons) {
- /*
- * Tail check for pending requests. Allows frontend to avoid
- * notifications if requests are already in flight (lower
- * overheads and promotes batching).
- */
- RING_FINAL_CHECK_FOR_REQUESTS(&blkdev->rings.common, have_requests);
+ /*
+ * Tail check for pending requests. Allows frontend to avoid
+ * notifications if requests are already in flight (lower
+ * overheads and promotes batching).
+ */
+ RING_FINAL_CHECK_FOR_REQUESTS(&blkdev->rings.common,
have_requests);
} else if (RING_HAS_UNCONSUMED_REQUESTS(&blkdev->rings.common)) {
- have_requests = 1;
+ have_requests = 1;
}
if (have_requests)
- blkdev->more_work++;
+ blkdev->more_work++;
return send_notify;
}
@@ -487,28 +487,28 @@ static void blk_send_response_all(struct XenBlkDev
*blkdev)
while (!QLIST_EMPTY(&blkdev->finished)) {
ioreq = QLIST_FIRST(&blkdev->finished);
- send_notify += blk_send_response_one(ioreq);
- ioreq_release(ioreq);
+ send_notify += blk_send_response_one(ioreq);
+ ioreq_release(ioreq);
}
if (send_notify)
- xen_be_send_notify(&blkdev->xendev);
+ xen_be_send_notify(&blkdev->xendev);
}
static int blk_get_request(struct XenBlkDev *blkdev, struct ioreq *ioreq,
RING_IDX rc)
{
switch (blkdev->protocol) {
case BLKIF_PROTOCOL_NATIVE:
- memcpy(&ioreq->req, RING_GET_REQUEST(&blkdev->rings.native, rc),
- sizeof(ioreq->req));
- break;
+ memcpy(&ioreq->req,
RING_GET_REQUEST(&blkdev->rings.native, rc),
+ sizeof(ioreq->req));
+ break;
case BLKIF_PROTOCOL_X86_32:
blkif_get_x86_32_req(&ioreq->req,
RING_GET_REQUEST(&blkdev->rings.x86_32_part, rc));
- break;
+ break;
case BLKIF_PROTOCOL_X86_64:
blkif_get_x86_64_req(&ioreq->req,
RING_GET_REQUEST(&blkdev->rings.x86_64_part, rc));
- break;
+ break;
}
return 0;
}
@@ -589,44 +589,44 @@ static int blk_init(struct XenDevice *xendev)
/* read xenstore entries */
if (blkdev->params == NULL) {
- blkdev->params = xenstore_read_be_str(&blkdev->xendev,
"params");
+ blkdev->params = xenstore_read_be_str(&blkdev->xendev,
"params");
h = strchr(blkdev->params, '':'');
- if (h != NULL) {
- blkdev->fileproto = blkdev->params;
- blkdev->filename = h+1;
- *h = 0;
- } else {
- blkdev->fileproto = "<unset>";
- blkdev->filename = blkdev->params;
- }
+ if (h != NULL) {
+ blkdev->fileproto = blkdev->params;
+ blkdev->filename = h+1;
+ *h = 0;
+ } else {
+ blkdev->fileproto = "<unset>";
+ blkdev->filename = blkdev->params;
+ }
}
if (blkdev->mode == NULL)
- blkdev->mode = xenstore_read_be_str(&blkdev->xendev,
"mode");
+ blkdev->mode = xenstore_read_be_str(&blkdev->xendev,
"mode");
if (blkdev->type == NULL)
- blkdev->type = xenstore_read_be_str(&blkdev->xendev,
"type");
+ blkdev->type = xenstore_read_be_str(&blkdev->xendev,
"type");
if (blkdev->dev == NULL)
- blkdev->dev = xenstore_read_be_str(&blkdev->xendev,
"dev");
+ blkdev->dev = xenstore_read_be_str(&blkdev->xendev,
"dev");
if (blkdev->devtype == NULL)
- blkdev->devtype = xenstore_read_be_str(&blkdev->xendev,
"device-type");
+ blkdev->devtype = xenstore_read_be_str(&blkdev->xendev,
"device-type");
/* do we have all we need? */
if (blkdev->params == NULL ||
- blkdev->mode == NULL ||
- blkdev->type == NULL ||
- blkdev->dev == NULL)
- return -1;
+ blkdev->mode == NULL ||
+ blkdev->type == NULL ||
+ blkdev->dev == NULL)
+ return -1;
/* read-only ? */
if (strcmp(blkdev->mode, "w") == 0) {
- qflags = BDRV_O_RDWR;
+ qflags = BDRV_O_RDWR;
} else {
- qflags = 0;
- info |= VDISK_READONLY;
+ qflags = 0;
+ info |= VDISK_READONLY;
}
/* cdrom ? */
if (blkdev->devtype && !strcmp(blkdev->devtype,
"cdrom"))
- info |= VDISK_CDROM;
+ info |= VDISK_CDROM;
/* init qemu block driver */
index = (blkdev->xendev.dev - 202 * 256) / 16;
@@ -643,7 +643,7 @@ static int blk_init(struct XenDevice *xendev)
} else {
/* setup via qemu cmdline -> already setup for us */
xen_be_printf(&blkdev->xendev, 2, "get configured bdrv
(cmdline setup)\n");
- blkdev->bs = blkdev->dinfo->bdrv;
+ blkdev->bs = blkdev->dinfo->bdrv;
}
blkdev->file_blk = BLOCK_SIZE;
blkdev->file_size = bdrv_getlength(blkdev->bs);
@@ -651,21 +651,21 @@ static int blk_init(struct XenDevice *xendev)
xen_be_printf(&blkdev->xendev, 1, "bdrv_getlength: %d (%s)
| drv %s\n",
(int)blkdev->file_size,
strerror(-blkdev->file_size),
blkdev->bs->drv ?
blkdev->bs->drv->format_name : "-");
- blkdev->file_size = 0;
+ blkdev->file_size = 0;
}
have_barriers = blkdev->bs->drv &&
blkdev->bs->drv->bdrv_flush ? 1 : 0;
xen_be_printf(xendev, 1, "type \"%s\", fileproto
\"%s\", filename \"%s\","
- " size %" PRId64 " (%" PRId64 " MB)\n",
- blkdev->type, blkdev->fileproto, blkdev->filename,
- blkdev->file_size, blkdev->file_size >> 20);
+ " size %" PRId64 " (%" PRId64 "
MB)\n",
+ blkdev->type, blkdev->fileproto, blkdev->filename,
+ blkdev->file_size, blkdev->file_size >> 20);
/* fill info */
xenstore_write_be_int(&blkdev->xendev, "feature-barrier",
have_barriers);
xenstore_write_be_int(&blkdev->xendev, "info",
info);
xenstore_write_be_int(&blkdev->xendev, "sector-size",
blkdev->file_blk);
xenstore_write_be_int(&blkdev->xendev, "sectors",
- blkdev->file_size / blkdev->file_blk);
+ blkdev->file_size / blkdev->file_blk);
return 0;
}
@@ -674,10 +674,10 @@ static int blk_connect(struct XenDevice *xendev)
struct XenBlkDev *blkdev = container_of(xendev, struct XenBlkDev, xendev);
if (xenstore_read_fe_int(&blkdev->xendev, "ring-ref",
&blkdev->ring_ref) == -1)
- return -1;
+ return -1;
if (xenstore_read_fe_int(&blkdev->xendev, "event-channel",
&blkdev->xendev.remote_port) == -1)
- return -1;
+ return -1;
blkdev->protocol = BLKIF_PROTOCOL_NATIVE;
if (blkdev->xendev.protocol) {
@@ -688,42 +688,42 @@ static int blk_connect(struct XenDevice *xendev)
}
blkdev->sring = xc_gnttab_map_grant_ref(blkdev->xendev.gnttabdev,
- blkdev->xendev.dom,
- blkdev->ring_ref,
- PROT_READ | PROT_WRITE);
+ blkdev->xendev.dom,
+ blkdev->ring_ref,
+ PROT_READ | PROT_WRITE);
if (!blkdev->sring)
- return -1;
+ return -1;
blkdev->cnt_map++;
switch (blkdev->protocol) {
case BLKIF_PROTOCOL_NATIVE:
{
- blkif_sring_t *sring_native = blkdev->sring;
- BACK_RING_INIT(&blkdev->rings.native, sring_native, XC_PAGE_SIZE);
- break;
+ blkif_sring_t *sring_native = blkdev->sring;
+ BACK_RING_INIT(&blkdev->rings.native, sring_native,
XC_PAGE_SIZE);
+ break;
}
case BLKIF_PROTOCOL_X86_32:
{
- blkif_x86_32_sring_t *sring_x86_32 = blkdev->sring;
+ blkif_x86_32_sring_t *sring_x86_32 = blkdev->sring;
BACK_RING_INIT(&blkdev->rings.x86_32_part, sring_x86_32,
XC_PAGE_SIZE);
- break;
+ break;
}
case BLKIF_PROTOCOL_X86_64:
{
- blkif_x86_64_sring_t *sring_x86_64 = blkdev->sring;
+ blkif_x86_64_sring_t *sring_x86_64 = blkdev->sring;
BACK_RING_INIT(&blkdev->rings.x86_64_part, sring_x86_64,
XC_PAGE_SIZE);
- break;
+ break;
}
}
xen_be_bind_evtchn(&blkdev->xendev);
xen_be_printf(&blkdev->xendev, 1, "ok: proto %s, ring-ref %d,
"
- "remote port %d, local port %d\n",
- blkdev->xendev.protocol, blkdev->ring_ref,
- blkdev->xendev.remote_port, blkdev->xendev.local_port);
+ "remote port %d, local port %d\n",
+ blkdev->xendev.protocol, blkdev->ring_ref,
+ blkdev->xendev.remote_port, blkdev->xendev.local_port);
return 0;
}
@@ -737,14 +737,14 @@ static void blk_disconnect(struct XenDevice *xendev)
bdrv_close(blkdev->bs);
bdrv_delete(blkdev->bs);
}
- blkdev->bs = NULL;
+ blkdev->bs = NULL;
}
xen_be_unbind_evtchn(&blkdev->xendev);
if (blkdev->sring) {
- xc_gnttab_munmap(blkdev->xendev.gnttabdev, blkdev->sring, 1);
- blkdev->cnt_map--;
- blkdev->sring = NULL;
+ xc_gnttab_munmap(blkdev->xendev.gnttabdev, blkdev->sring, 1);
+ blkdev->cnt_map--;
+ blkdev->sring = NULL;
}
}
@@ -754,10 +754,10 @@ static int blk_free(struct XenDevice *xendev)
struct ioreq *ioreq;
while (!QLIST_EMPTY(&blkdev->freelist)) {
- ioreq = QLIST_FIRST(&blkdev->freelist);
+ ioreq = QLIST_FIRST(&blkdev->freelist);
QLIST_REMOVE(ioreq, list);
qemu_iovec_destroy(&ioreq->v);
- qemu_free(ioreq);
+ qemu_free(ioreq);
}
qemu_free(blkdev->params);
diff --git a/hw/xen_nic.c b/hw/xen_nic.c
index 08055b8..8fcf856 100644
--- a/hw/xen_nic.c
+++ b/hw/xen_nic.c
@@ -75,19 +75,19 @@ static void net_tx_response(struct XenNetDev *netdev,
netif_tx_request_t *txp, i
#if 0
if (txp->flags & NETTXF_extra_info)
- RING_GET_RESPONSE(&netdev->tx_ring, ++i)->status = NETIF_RSP_NULL;
+ RING_GET_RESPONSE(&netdev->tx_ring, ++i)->status =
NETIF_RSP_NULL;
#endif
netdev->tx_ring.rsp_prod_pvt = ++i;
RING_PUSH_RESPONSES_AND_CHECK_NOTIFY(&netdev->tx_ring, notify);
if (notify)
- xen_be_send_notify(&netdev->xendev);
+ xen_be_send_notify(&netdev->xendev);
if (i == netdev->tx_ring.req_cons) {
- int more_to_do;
- RING_FINAL_CHECK_FOR_REQUESTS(&netdev->tx_ring, more_to_do);
- if (more_to_do)
- netdev->tx_work++;
+ int more_to_do;
+ RING_FINAL_CHECK_FOR_REQUESTS(&netdev->tx_ring, more_to_do);
+ if (more_to_do)
+ netdev->tx_work++;
}
}
@@ -101,10 +101,10 @@ static void net_tx_error(struct XenNetDev *netdev,
netif_tx_request_t *txp, RING
RING_IDX cons = netdev->tx_ring.req_cons;
do {
- make_tx_response(netif, txp, NETIF_RSP_ERROR);
- if (cons >= end)
- break;
- txp = RING_GET_REQUEST(&netdev->tx_ring, cons++);
+ make_tx_response(netif, txp, NETIF_RSP_ERROR);
+ if (cons >= end)
+ break;
+ txp = RING_GET_REQUEST(&netdev->tx_ring, cons++);
} while (1);
netdev->tx_ring.req_cons = cons;
netif_schedule_work(netif);
@@ -122,75 +122,75 @@ static void net_tx_packets(struct XenNetDev *netdev)
void *tmpbuf = NULL;
for (;;) {
- rc = netdev->tx_ring.req_cons;
- rp = netdev->tx_ring.sring->req_prod;
- xen_rmb(); /* Ensure we see queued requests up to ''rp''. */
+ rc = netdev->tx_ring.req_cons;
+ rp = netdev->tx_ring.sring->req_prod;
+ xen_rmb(); /* Ensure we see queued requests up to
''rp''. */
- while ((rc != rp)) {
- if (RING_REQUEST_CONS_OVERFLOW(&netdev->tx_ring, rc))
- break;
- memcpy(&txreq, RING_GET_REQUEST(&netdev->tx_ring, rc),
sizeof(txreq));
- netdev->tx_ring.req_cons = ++rc;
+ while ((rc != rp)) {
+ if (RING_REQUEST_CONS_OVERFLOW(&netdev->tx_ring, rc))
+ break;
+ memcpy(&txreq, RING_GET_REQUEST(&netdev->tx_ring, rc),
sizeof(txreq));
+ netdev->tx_ring.req_cons = ++rc;
#if 1
- /* should not happen in theory, we don''t announce the *
- * feature-{sg,gso,whatelse} flags in xenstore (yet?) */
- if (txreq.flags & NETTXF_extra_info) {
- xen_be_printf(&netdev->xendev, 0, "FIXME: extra info
flag\n");
- net_tx_error(netdev, &txreq, rc);
- continue;
- }
- if (txreq.flags & NETTXF_more_data) {
- xen_be_printf(&netdev->xendev, 0, "FIXME: more data
flag\n");
- net_tx_error(netdev, &txreq, rc);
- continue;
- }
+ /* should not happen in theory, we don''t announce the *
+ * feature-{sg,gso,whatelse} flags in xenstore (yet?) */
+ if (txreq.flags & NETTXF_extra_info) {
+ xen_be_printf(&netdev->xendev, 0, "FIXME: extra
info flag\n");
+ net_tx_error(netdev, &txreq, rc);
+ continue;
+ }
+ if (txreq.flags & NETTXF_more_data) {
+ xen_be_printf(&netdev->xendev, 0, "FIXME: more data
flag\n");
+ net_tx_error(netdev, &txreq, rc);
+ continue;
+ }
#endif
- if (txreq.size < 14) {
- xen_be_printf(&netdev->xendev, 0, "bad packet size: %d\n",
txreq.size);
- net_tx_error(netdev, &txreq, rc);
- continue;
- }
-
- if ((txreq.offset + txreq.size) > XC_PAGE_SIZE) {
- xen_be_printf(&netdev->xendev, 0, "error: page crossing\n");
- net_tx_error(netdev, &txreq, rc);
- continue;
- }
-
- xen_be_printf(&netdev->xendev, 3, "tx packet ref %d, off %d,
len %d, flags 0x%x%s%s%s%s\n",
- txreq.gref, txreq.offset, txreq.size, txreq.flags,
- (txreq.flags & NETTXF_csum_blank) ? " csum_blank" :
"",
- (txreq.flags & NETTXF_data_validated) ? " data_validated" :
"",
- (txreq.flags & NETTXF_more_data) ? " more_data" :
"",
- (txreq.flags & NETTXF_extra_info) ? " extra_info" :
"");
-
- page = xc_gnttab_map_grant_ref(netdev->xendev.gnttabdev,
- netdev->xendev.dom,
- txreq.gref, PROT_READ);
- if (page == NULL) {
- xen_be_printf(&netdev->xendev, 0, "error: tx gref dereference
failed (%d)\n",
+ if (txreq.size < 14) {
+ xen_be_printf(&netdev->xendev, 0, "bad packet size:
%d\n", txreq.size);
+ net_tx_error(netdev, &txreq, rc);
+ continue;
+ }
+
+ if ((txreq.offset + txreq.size) > XC_PAGE_SIZE) {
+ xen_be_printf(&netdev->xendev, 0, "error: page
crossing\n");
+ net_tx_error(netdev, &txreq, rc);
+ continue;
+ }
+
+ xen_be_printf(&netdev->xendev, 3, "tx packet ref %d,
off %d, len %d, flags 0x%x%s%s%s%s\n",
+ txreq.gref, txreq.offset, txreq.size, txreq.flags,
+ (txreq.flags & NETTXF_csum_blank) ? "
csum_blank" : "",
+ (txreq.flags & NETTXF_data_validated) ? "
data_validated" : "",
+ (txreq.flags & NETTXF_more_data) ? "
more_data" : "",
+ (txreq.flags & NETTXF_extra_info) ? "
extra_info" : "");
+
+ page = xc_gnttab_map_grant_ref(netdev->xendev.gnttabdev,
+ netdev->xendev.dom,
+ txreq.gref, PROT_READ);
+ if (page == NULL) {
+ xen_be_printf(&netdev->xendev, 0, "error: tx gref
dereference failed (%d)\n",
txreq.gref);
- net_tx_error(netdev, &txreq, rc);
- continue;
- }
- if (txreq.flags & NETTXF_csum_blank) {
+ net_tx_error(netdev, &txreq, rc);
+ continue;
+ }
+ if (txreq.flags & NETTXF_csum_blank) {
/* have read-only mapping -> can''t fill checksum
in-place */
if (!tmpbuf)
tmpbuf = qemu_malloc(XC_PAGE_SIZE);
memcpy(tmpbuf, page + txreq.offset, txreq.size);
- net_checksum_calculate(tmpbuf, txreq.size);
+ net_checksum_calculate(tmpbuf, txreq.size);
qemu_send_packet(&netdev->nic->nc, tmpbuf,
txreq.size);
} else {
qemu_send_packet(&netdev->nic->nc, page +
txreq.offset, txreq.size);
}
- xc_gnttab_munmap(netdev->xendev.gnttabdev, page, 1);
- net_tx_response(netdev, &txreq, NETIF_RSP_OKAY);
- }
- if (!netdev->tx_work)
- break;
- netdev->tx_work = 0;
+ xc_gnttab_munmap(netdev->xendev.gnttabdev, page, 1);
+ net_tx_response(netdev, &txreq, NETIF_RSP_OKAY);
+ }
+ if (!netdev->tx_work)
+ break;
+ netdev->tx_work = 0;
}
qemu_free(tmpbuf);
}
@@ -198,9 +198,9 @@ static void net_tx_packets(struct XenNetDev *netdev)
/* ------------------------------------------------------------- */
static void net_rx_response(struct XenNetDev *netdev,
- netif_rx_request_t *req, int8_t st,
- uint16_t offset, uint16_t size,
- uint16_t flags)
+ netif_rx_request_t *req, int8_t st,
+ uint16_t offset, uint16_t size,
+ uint16_t flags)
{
RING_IDX i = netdev->rx_ring.rsp_prod_pvt;
netif_rx_response_t *resp;
@@ -212,15 +212,15 @@ static void net_rx_response(struct XenNetDev *netdev,
resp->id = req->id;
resp->status = (int16_t)size;
if (st < 0)
- resp->status = (int16_t)st;
+ resp->status = (int16_t)st;
xen_be_printf(&netdev->xendev, 3, "rx response: idx %d, status
%d, flags 0x%x\n",
- i, resp->status, resp->flags);
+ i, resp->status, resp->flags);
netdev->rx_ring.rsp_prod_pvt = ++i;
RING_PUSH_RESPONSES_AND_CHECK_NOTIFY(&netdev->rx_ring, notify);
if (notify)
- xen_be_send_notify(&netdev->xendev);
+ xen_be_send_notify(&netdev->xendev);
}
#define NET_IP_ALIGN 2
@@ -231,16 +231,16 @@ static int net_rx_ok(VLANClientState *nc)
RING_IDX rc, rp;
if (netdev->xendev.be_state != XenbusStateConnected)
- return 0;
+ return 0;
rc = netdev->rx_ring.req_cons;
rp = netdev->rx_ring.sring->req_prod;
xen_rmb();
if (rc == rp || RING_REQUEST_CONS_OVERFLOW(&netdev->rx_ring, rc)) {
- xen_be_printf(&netdev->xendev, 2, "%s: no rx buffers
(%d/%d)\n",
- __FUNCTION__, rc, rp);
- return 0;
+ xen_be_printf(&netdev->xendev, 2, "%s: no rx buffers
(%d/%d)\n",
+ __FUNCTION__, rc, rp);
+ return 0;
}
return 1;
}
@@ -253,33 +253,33 @@ static ssize_t net_rx_packet(VLANClientState *nc, const
uint8_t *buf, size_t siz
void *page;
if (netdev->xendev.be_state != XenbusStateConnected)
- return -1;
+ return -1;
rc = netdev->rx_ring.req_cons;
rp = netdev->rx_ring.sring->req_prod;
xen_rmb(); /* Ensure we see queued requests up to ''rp''.
*/
if (rc == rp || RING_REQUEST_CONS_OVERFLOW(&netdev->rx_ring, rc)) {
- xen_be_printf(&netdev->xendev, 2, "no buffer, drop
packet\n");
- return -1;
+ xen_be_printf(&netdev->xendev, 2, "no buffer, drop
packet\n");
+ return -1;
}
if (size > XC_PAGE_SIZE - NET_IP_ALIGN) {
- xen_be_printf(&netdev->xendev, 0, "packet too big (%lu >
%ld)",
- (unsigned long)size, XC_PAGE_SIZE - NET_IP_ALIGN);
- return -1;
+ xen_be_printf(&netdev->xendev, 0, "packet too big (%lu >
%ld)",
+ (unsigned long)size, XC_PAGE_SIZE - NET_IP_ALIGN);
+ return -1;
}
memcpy(&rxreq, RING_GET_REQUEST(&netdev->rx_ring, rc),
sizeof(rxreq));
netdev->rx_ring.req_cons = ++rc;
page = xc_gnttab_map_grant_ref(netdev->xendev.gnttabdev,
- netdev->xendev.dom,
- rxreq.gref, PROT_WRITE);
+ netdev->xendev.dom,
+ rxreq.gref, PROT_WRITE);
if (page == NULL) {
- xen_be_printf(&netdev->xendev, 0, "error: rx gref dereference
failed (%d)\n",
+ xen_be_printf(&netdev->xendev, 0, "error: rx gref
dereference failed (%d)\n",
rxreq.gref);
- net_rx_response(netdev, &rxreq, NETIF_RSP_ERROR, 0, 0, 0);
- return -1;
+ net_rx_response(netdev, &rxreq, NETIF_RSP_ERROR, 0, 0, 0);
+ return -1;
}
memcpy(page + NET_IP_ALIGN, buf, size);
xc_gnttab_munmap(netdev->xendev.gnttabdev, page, 1);
@@ -303,11 +303,11 @@ static int net_init(struct XenDevice *xendev)
/* read xenstore entries */
if (netdev->mac == NULL)
- netdev->mac = xenstore_read_be_str(&netdev->xendev,
"mac");
+ netdev->mac = xenstore_read_be_str(&netdev->xendev,
"mac");
/* do we have all we need? */
if (netdev->mac == NULL)
- return -1;
+ return -1;
if (net_parse_macaddr(netdev->conf.macaddr.a, netdev->mac) < 0)
return -1;
@@ -334,41 +334,41 @@ static int net_connect(struct XenDevice *xendev)
int rx_copy;
if (xenstore_read_fe_int(&netdev->xendev, "tx-ring-ref",
- &netdev->tx_ring_ref) == -1)
- return -1;
+ &netdev->tx_ring_ref) == -1)
+ return -1;
if (xenstore_read_fe_int(&netdev->xendev, "rx-ring-ref",
- &netdev->rx_ring_ref) == -1)
- return 1;
+ &netdev->rx_ring_ref) == -1)
+ return 1;
if (xenstore_read_fe_int(&netdev->xendev, "event-channel",
- &netdev->xendev.remote_port) == -1)
- return -1;
+ &netdev->xendev.remote_port) == -1)
+ return -1;
if (xenstore_read_fe_int(&netdev->xendev,
"request-rx-copy", &rx_copy) == -1)
- rx_copy = 0;
+ rx_copy = 0;
if (rx_copy == 0) {
- xen_be_printf(&netdev->xendev, 0, "frontend doesn''t
support rx-copy.\n");
- return -1;
+ xen_be_printf(&netdev->xendev, 0, "frontend
doesn''t support rx-copy.\n");
+ return -1;
}
netdev->txs = xc_gnttab_map_grant_ref(netdev->xendev.gnttabdev,
- netdev->xendev.dom,
- netdev->tx_ring_ref,
- PROT_READ | PROT_WRITE);
+ netdev->xendev.dom,
+ netdev->tx_ring_ref,
+ PROT_READ | PROT_WRITE);
netdev->rxs = xc_gnttab_map_grant_ref(netdev->xendev.gnttabdev,
- netdev->xendev.dom,
- netdev->rx_ring_ref,
- PROT_READ | PROT_WRITE);
+ netdev->xendev.dom,
+ netdev->rx_ring_ref,
+ PROT_READ | PROT_WRITE);
if (!netdev->txs || !netdev->rxs)
- return -1;
+ return -1;
BACK_RING_INIT(&netdev->tx_ring, netdev->txs, XC_PAGE_SIZE);
BACK_RING_INIT(&netdev->rx_ring, netdev->rxs, XC_PAGE_SIZE);
xen_be_bind_evtchn(&netdev->xendev);
xen_be_printf(&netdev->xendev, 1, "ok: tx-ring-ref %d,
rx-ring-ref %d, "
- "remote port %d, local port %d\n",
- netdev->tx_ring_ref, netdev->rx_ring_ref,
- netdev->xendev.remote_port, netdev->xendev.local_port);
+ "remote port %d, local port %d\n",
+ netdev->tx_ring_ref, netdev->rx_ring_ref,
+ netdev->xendev.remote_port, netdev->xendev.local_port);
net_tx_packets(netdev);
return 0;
@@ -381,12 +381,12 @@ static void net_disconnect(struct XenDevice *xendev)
xen_be_unbind_evtchn(&netdev->xendev);
if (netdev->txs) {
- xc_gnttab_munmap(netdev->xendev.gnttabdev, netdev->txs, 1);
- netdev->txs = NULL;
+ xc_gnttab_munmap(netdev->xendev.gnttabdev, netdev->txs, 1);
+ netdev->txs = NULL;
}
if (netdev->rxs) {
- xc_gnttab_munmap(netdev->xendev.gnttabdev, netdev->rxs, 1);
- netdev->rxs = NULL;
+ xc_gnttab_munmap(netdev->xendev.gnttabdev, netdev->rxs, 1);
+ netdev->rxs = NULL;
}
if (netdev->nic) {
qemu_del_vlan_client(&netdev->nic->nc);
--
1.7.1
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xensource.com
http://lists.xensource.com/xen-devel
anthony.perard@citrix.com
2011-Jan-25 14:29 UTC
[Xen-devel] [PATCH V9 02/16] xen: Make xen build only on x86 target.
From: Anthony PERARD <anthony.perard@citrix.com>
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
---
Makefile.objs | 4 ----
Makefile.target | 4 +++-
configure | 5 +----
3 files changed, 4 insertions(+), 9 deletions(-)
diff --git a/Makefile.objs b/Makefile.objs
index 93406ff..d91b9bc 100644
--- a/Makefile.objs
+++ b/Makefile.objs
@@ -150,10 +150,6 @@ slirp-obj-y += slirp.o mbuf.o misc.o sbuf.o socket.o
tcp_input.o tcp_output.o
slirp-obj-y += tcp_subr.o tcp_timer.o udp.o bootp.o tftp.o
common-obj-$(CONFIG_SLIRP) += $(addprefix slirp/, $(slirp-obj-y))
-# xen backend driver support
-common-obj-$(CONFIG_XEN) += xen_backend.o xen_devconfig.o
-common-obj-$(CONFIG_XEN) += xen_console.o xenfb.o xen_disk.o xen_nic.o
-
######################################################################
# libuser
diff --git a/Makefile.target b/Makefile.target
index b0ba95f..db29e96 100644
--- a/Makefile.target
+++ b/Makefile.target
@@ -206,7 +206,9 @@ QEMU_CFLAGS += $(VNC_JPEG_CFLAGS)
QEMU_CFLAGS += $(VNC_PNG_CFLAGS)
# xen backend driver support
-obj-$(CONFIG_XEN) += xen_machine_pv.o xen_domainbuild.o
+obj-$(CONFIG_XEN) += xen_backend.o xen_devconfig.o
+obj-$(CONFIG_XEN) += xen_console.o xenfb.o xen_disk.o xen_nic.o
+obj-i386-$(CONFIG_XEN) += xen_machine_pv.o xen_domainbuild.o
# Inter-VM PCI shared memory
obj-$(CONFIG_KVM) += ivshmem.o
diff --git a/configure b/configure
index 210670c..5a9121d 100755
--- a/configure
+++ b/configure
@@ -1151,7 +1151,6 @@ int main(void) { xs_daemon_open(); xc_interface_open();
return 0; }
EOF
if compile_prog "" "$xen_libs" ; then
xen=yes
- libs_softmmu="$xen_libs $libs_softmmu"
else
if test "$xen" = "yes" ; then
feature_not_found "xen"
@@ -2674,9 +2673,6 @@ if test "$bluez" = "yes" ; then
echo "CONFIG_BLUEZ=y" >> $config_host_mak
echo "BLUEZ_CFLAGS=$bluez_cflags" >> $config_host_mak
fi
-if test "$xen" = "yes" ; then
- echo "CONFIG_XEN=y" >> $config_host_mak
-fi
if test "$io_thread" = "yes" ; then
echo "CONFIG_IOTHREAD=y" >> $config_host_mak
echo "CONFIG_THREAD=y" >> $config_host_mak
@@ -3012,6 +3008,7 @@ case "$target_arch2" in
i386|x86_64)
if test "$xen" = "yes" -a "$target_softmmu" =
"yes" ; then
echo "CONFIG_XEN=y" >> $config_target_mak
+ echo "LIBS+=$xen_libs" >> $config_target_mak
fi
esac
case "$target_arch2" in
--
1.7.1
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xensource.com
http://lists.xensource.com/xen-devel
anthony.perard@citrix.com
2011-Jan-25 14:29 UTC
[Xen-devel] [PATCH V9 03/16] xen: Add a generic layer for xc calls
From: Alexander Graf <agraf@suse.de>
This patch adds a generic layer for xc calls, allowing us to choose between the
xenner and xen implementations at runtime.
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
---
hw/xen_interfaces.c | 100 +++++++++++++++++++++++++++++++++++++++++++++++++
hw/xen_interfaces.h | 104 +++++++++++++++++++++++++++++++++++++++++++++++++++
hw/xen_redirect.h | 56 +++++++++++++++++++++++++++
3 files changed, 260 insertions(+), 0 deletions(-)
create mode 100644 hw/xen_interfaces.c
create mode 100644 hw/xen_interfaces.h
create mode 100644 hw/xen_redirect.h
diff --git a/hw/xen_interfaces.c b/hw/xen_interfaces.c
new file mode 100644
index 0000000..09f40e0
--- /dev/null
+++ b/hw/xen_interfaces.c
@@ -0,0 +1,100 @@
+#include <xenctrl.h>
+#include <xs.h>
+
+#include "hw.h"
+#include "xen.h"
+#include "xen_interfaces.h"
+
+#ifdef CONFIG_XEN
+
+static int xc_evtchn_domid(int handle, int domid)
+{
+ return -1;
+}
+
+static struct XenEvtOps xc_evtchn_xen = {
+ .open = xc_evtchn_open,
+ .domid = xc_evtchn_domid,
+ .close = xc_evtchn_close,
+ .fd = xc_evtchn_fd,
+ .notify = xc_evtchn_notify,
+ .bind_unbound_port = xc_evtchn_bind_unbound_port,
+ .bind_interdomain = xc_evtchn_bind_interdomain,
+ .bind_virq = xc_evtchn_bind_virq,
+ .unbind = xc_evtchn_unbind,
+ .pending = xc_evtchn_pending,
+ .unmask = xc_evtchn_unmask,
+};
+
+static int xs_domid(struct xs_handle *h, int domid)
+{
+ return -1;
+}
+
+static struct XenStoreOps xs_xen = {
+ .daemon_open = xs_daemon_open,
+ .domain_open = xs_domain_open,
+ .daemon_open_readonly = xs_daemon_open_readonly,
+ .domid = xs_domid,
+ .daemon_close = xs_daemon_close,
+ .directory = xs_directory,
+ .read = xs_read,
+ .write = xs_write,
+ .mkdir = xs_mkdir,
+ .rm = xs_rm,
+ .get_permissions = xs_get_permissions,
+ .set_permissions = xs_set_permissions,
+ .watch = xs_watch,
+ .fileno = xs_fileno,
+ .read_watch = xs_read_watch,
+ .unwatch = xs_unwatch,
+ .transaction_start = xs_transaction_start,
+ .transaction_end = xs_transaction_end,
+ .introduce_domain = xs_introduce_domain,
+ .resume_domain = xs_resume_domain,
+ .release_domain = xs_release_domain,
+ .get_domain_path = xs_get_domain_path,
+ .is_domain_introduced = xs_is_domain_introduced,
+};
+
+static struct XenGnttabOps xc_gnttab_xen = {
+ .open = xc_gnttab_open,
+ .close = xc_gnttab_close,
+ .map_grant_ref = xc_gnttab_map_grant_ref,
+ .map_grant_refs = xc_gnttab_map_grant_refs,
+ .munmap = xc_gnttab_munmap,
+};
+
+struct XenIfOps xc_xen = {
+ .interface_open = xc_interface_open,
+ .interface_close = xc_interface_close,
+ .map_foreign_range = xc_map_foreign_range,
+ .map_foreign_pages = xc_map_foreign_pages,
+ .map_foreign_bulk = xc_map_foreign_bulk,
+};
+
+#endif
+
+struct XenEvtOps xc_evtchn;
+struct XenGnttabOps xc_gnttab;
+struct XenIfOps xc;
+struct XenStoreOps xs;
+
+void xen_interfaces_init(void)
+{
+ switch (xen_mode) {
+#ifdef CONFIG_XEN
+ case XEN_ATTACH:
+ case XEN_CREATE:
+ xc_evtchn = xc_evtchn_xen;
+ xc_gnttab = xc_gnttab_xen;
+ xc = xc_xen;
+ xs = xs_xen;
+ break;
+#endif
+ default:
+ fprintf(stderr, "ERROR: Compiled without %s support,
sorry.\n",
+ xen_mode == XEN_EMULATE ? "xenner" :
"Xen");
+ exit(1);
+ }
+}
diff --git a/hw/xen_interfaces.h b/hw/xen_interfaces.h
new file mode 100644
index 0000000..1086850
--- /dev/null
+++ b/hw/xen_interfaces.h
@@ -0,0 +1,104 @@
+#ifndef QEMU_HW_XEN_INTERFACES_H
+#define QEMU_HW_XEN_INTERFACES_H 1
+
+#include <xenctrl.h>
+#include <xs.h>
+
+/* ------------------------------------------------------------- */
+/* xen event channel interface */
+
+struct XenEvtOps {
+ int (*open)(void);
+ int (*domid)(int xce_handle, int domid);
+ int (*close)(int xce_handle);
+ int (*fd)(int xce_handle);
+ int (*notify)(int xce_handle, evtchn_port_t port);
+ evtchn_port_or_error_t (*bind_unbound_port)(int xce_handle, int domid);
+ evtchn_port_or_error_t (*bind_interdomain)(int xce_handle, int domid,
+ evtchn_port_t remote_port);
+ evtchn_port_or_error_t (*bind_virq)(int xce_handle, unsigned int virq);
+ int (*unbind)(int xce_handle, evtchn_port_t port);
+ evtchn_port_or_error_t (*pending)(int xce_handle);
+ int (*unmask)(int xce_handle, evtchn_port_t port);
+};
+extern struct XenEvtOps xc_evtchn;
+
+/* ------------------------------------------------------------- */
+/* xenstore interface */
+
+struct xs_handle;
+struct XenStoreOps {
+ struct xs_handle *(*daemon_open)(void);
+ struct xs_handle *(*domain_open)(void);
+ struct xs_handle *(*daemon_open_readonly)(void);
+ int (*domid)(struct xs_handle *h, int domid);
+ void (*daemon_close)(struct xs_handle *);
+ char **(*directory)(struct xs_handle *h, xs_transaction_t t,
+ const char *path, unsigned int *num);
+ void *(*read)(struct xs_handle *h, xs_transaction_t t,
+ const char *path, unsigned int *len);
+ bool (*write)(struct xs_handle *h, xs_transaction_t t,
+ const char *path, const void *data, unsigned int len);
+ bool (*mkdir)(struct xs_handle *h, xs_transaction_t t,
+ const char *path);
+ bool (*rm)(struct xs_handle *h, xs_transaction_t t,
+ const char *path);
+ struct xs_permissions *(*get_permissions)(struct xs_handle *h,
+ xs_transaction_t t,
+ const char *path, unsigned int
*num);
+ bool (*set_permissions)(struct xs_handle *h, xs_transaction_t t,
+ const char *path, struct xs_permissions *perms,
+ unsigned int num_perms);
+ bool (*watch)(struct xs_handle *h, const char *path, const char *token);
+ int (*fileno)(struct xs_handle *h);
+ char **(*read_watch)(struct xs_handle *h, unsigned int *num);
+ bool (*unwatch)(struct xs_handle *h, const char *path, const char *token);
+ xs_transaction_t (*transaction_start)(struct xs_handle *h);
+ bool (*transaction_end)(struct xs_handle *h, xs_transaction_t t,
+ bool abort);
+ bool (*introduce_domain)(struct xs_handle *h,
+ unsigned int domid,
+ unsigned long mfn,
+ unsigned int eventchn);
+ bool (*resume_domain)(struct xs_handle *h, unsigned int domid);
+ bool (*release_domain)(struct xs_handle *h, unsigned int domid);
+ char *(*get_domain_path)(struct xs_handle *h, unsigned int domid);
+ bool (*is_domain_introduced)(struct xs_handle *h, unsigned int domid);
+};
+extern struct XenStoreOps xs;
+
+/* ------------------------------------------------------------- */
+/* xen grant table interface */
+
+struct XenGnttabOps {
+ int (*open)(void);
+ int (*close)(int xcg_handle);
+ void *(*map_grant_ref)(int xcg_handle, uint32_t domid,
+ uint32_t ref, int prot);
+ void *(*map_grant_refs)(int xcg_handle, uint32_t count,
+ uint32_t *domids, uint32_t *refs, int prot);
+ int (*munmap)(int xcg_handle, void *start_address, uint32_t count);
+};
+extern struct XenGnttabOps xc_gnttab;
+
+/* ------------------------------------------------------------- */
+/* xen hypercall interface */
+
+struct XenIfOps {
+ int (*interface_open)(void);
+ int (*interface_close)(int xc_handle);
+ void *(*map_foreign_range)(int xc_handle, uint32_t dom,
+ int size, int prot,
+ unsigned long mfn);
+ void *(*map_foreign_pages)(int xc_handle, uint32_t dom, int prot,
+ const xen_pfn_t *arr, int num);
+ void *(*map_foreign_bulk)(int xc_handle, uint32_t dom, int prot,
+ xen_pfn_t *arr, int num);
+};
+extern struct XenIfOps xc;
+
+/* ------------------------------------------------------------- */
+
+void xen_interfaces_init(void);
+
+#endif /* QEMU_HW_XEN_INTERFACES_H */
diff --git a/hw/xen_redirect.h b/hw/xen_redirect.h
new file mode 100644
index 0000000..6ddecf3
--- /dev/null
+++ b/hw/xen_redirect.h
@@ -0,0 +1,56 @@
+#ifndef QEMU_HW_XEN_REDIRECT_H
+#define QEMU_HW_XEN_REDIRECT_H 1
+
+#include "xen_interfaces.h"
+
+/* xen event channel interface */
+#define xc_evtchn_open xc_evtchn.open
+#define xc_evtchn_close xc_evtchn.close
+#define xc_evtchn_fd xc_evtchn.fd
+#define xc_evtchn_notify xc_evtchn.notify
+#define xc_evtchn_bind_unbound_port xc_evtchn.bind_unbound_port
+#define xc_evtchn_bind_interdomain xc_evtchn.bind_interdomain
+#define xc_evtchn_bind_virq xc_evtchn.bind_virq
+#define xc_evtchn_unbind xc_evtchn.unbind
+#define xc_evtchn_pending xc_evtchn.pending
+#define xc_evtchn_unmask xc_evtchn.unmask
+
+/* grant table interface */
+#define xc_gnttab_open xc_gnttab.open
+#define xc_gnttab_close xc_gnttab.close
+#define xc_gnttab_map_grant_ref xc_gnttab.map_grant_ref
+#define xc_gnttab_map_grant_refs xc_gnttab.map_grant_refs
+#define xc_gnttab_munmap xc_gnttab.munmap
+
+/* xen hypercall interface */
+#define xc_interface_open xc.interface_open
+#define xc_interface_close xc.interface_close
+#define xc_map_foreign_range xc.map_foreign_range
+#define xc_map_foreign_pages xc.map_foreign_pages
+#define xc_map_foreign_bulk xc.map_foreign_bulk
+
+/* xenstore interface */
+#define xs_daemon_open xs.daemon_open
+#define xs_domain_open xs.domain_open
+#define xs_daemon_open_readonly xs.daemon_open_readonly
+#define xs_daemon_close xs.daemon_close
+#define xs_directory xs.directory
+#define xs_read xs.read
+#define xs_write xs.write
+#define xs_mkdir xs.mkdir
+#define xs_rm xs.rm
+#define xs_get_permissions xs.get_permissions
+#define xs_set_permissions xs.set_permissions
+#define xs_watch xs.watch
+#define xs_fileno xs.fileno
+#define xs_read_watch xs.read_watch
+#define xs_unwatch xs.unwatch
+#define xs_transaction_start xs.transaction_start
+#define xs_transaction_end xs.transaction_end
+#define xs_introduce_domain xs.introduce_domain
+#define xs_resume_domain xs.resume_domain
+#define xs_release_domain xs.release_domain
+#define xs_get_domain_path xs.get_domain_path
+#define xs_is_domain_introduced xs.is_domain_introduced
+
+#endif /* QEMU_HW_XEN_REDIRECT_H */
--
1.7.1
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xensource.com
http://lists.xensource.com/xen-devel
anthony.perard@citrix.com
2011-Jan-25 14:29 UTC
[Xen-devel] [PATCH V9 04/16] xen: Support new libxc calls from xen unstable.
From: Anthony PERARD <anthony.perard@citrix.com>
Update the libxenctrl calls in Qemu to use the new interface, otherwise
Qemu wouldn''t be able to build against new versions of the library.
We also check libxenctrl version in configure, from Xen 3.3.0 to Xen
unstable.
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
---
Makefile.target | 3 +
configure | 62 +++++++++++++++++++++++++++++-
hw/xen_backend.c | 21 +++++-----
hw/xen_backend.h | 7 ++-
hw/xen_common.h | 36 ++++++++++-------
hw/xen_disk.c | 4 +-
hw/xen_domainbuild.c | 2 +-
hw/xen_interfaces.c | 103 +++++++++++++++++++++++++++++++++++++++++++++-----
hw/xen_interfaces.h | 76 +++++++++++++++++++++++++------------
hw/xen_redirect.h | 32 ++++++++-------
10 files changed, 264 insertions(+), 82 deletions(-)
diff --git a/Makefile.target b/Makefile.target
index db29e96..d09719f 100644
--- a/Makefile.target
+++ b/Makefile.target
@@ -205,6 +205,9 @@ QEMU_CFLAGS += $(VNC_SASL_CFLAGS)
QEMU_CFLAGS += $(VNC_JPEG_CFLAGS)
QEMU_CFLAGS += $(VNC_PNG_CFLAGS)
+# xen support
+obj-$(CONFIG_XEN) += xen_interfaces.o
+
# xen backend driver support
obj-$(CONFIG_XEN) += xen_backend.o xen_devconfig.o
obj-$(CONFIG_XEN) += xen_console.o xenfb.o xen_disk.o xen_nic.o
diff --git a/configure b/configure
index 5a9121d..fde9bad 100755
--- a/configure
+++ b/configure
@@ -126,6 +126,7 @@ vnc_jpeg=""
vnc_png=""
vnc_thread="no"
xen=""
+xen_ctrl_version=""
linux_aio=""
attr=""
vhost_net=""
@@ -1144,13 +1145,71 @@ fi
if test "$xen" != "no" ; then
xen_libs="-lxenstore -lxenctrl -lxenguest"
+
+ # Xen unstable
cat > $TMPC <<EOF
#include <xenctrl.h>
#include <xs.h>
-int main(void) { xs_daemon_open(); xc_interface_open(); return 0; }
+#include <stdint.h>
+#include <xen/hvm/hvm_info_table.h>
+#if !defined(HVM_MAX_VCPUS)
+# error HVM_MAX_VCPUS not defined
+#endif
+int main(void) {
+ xc_interface *xc;
+ xs_daemon_open();
+ xc = xc_interface_open(0, 0, 0);
+ xc_hvm_set_mem_type(0, 0, HVMMEM_ram_ro, 0, 0);
+ xc_gnttab_open(NULL, 0);
+ return 0;
+}
EOF
if compile_prog "" "$xen_libs" ; then
+ xen_ctrl_version=410
+ xen=yes
+
+ # Xen 4.0.0
+ elif (
+ cat > $TMPC <<EOF
+#include <xenctrl.h>
+#include <xs.h>
+#include <stdint.h>
+#include <xen/hvm/hvm_info_table.h>
+#if !defined(HVM_MAX_VCPUS)
+# error HVM_MAX_VCPUS not defined
+#endif
+int main(void) {
+ xs_daemon_open();
+ xc_interface_open();
+ xc_gnttab_open();
+ xc_hvm_set_mem_type(0, 0, HVMMEM_ram_ro, 0, 0);
+ return 0;
+}
+EOF
+ compile_prog "" "$xen_libs"
+ ) ; then
+ xen_ctrl_version=400
+ xen=yes
+
+ # Xen 3.3.0, 3.4.0
+ elif (
+ cat > $TMPC <<EOF
+#include <xenctrl.h>
+#include <xs.h>
+int main(void) {
+ xs_daemon_open();
+ xc_interface_open();
+ xc_gnttab_open();
+ xc_hvm_set_mem_type(0, 0, HVMMEM_ram_ro, 0, 0);
+ return 0;
+}
+EOF
+ compile_prog "" "$xen_libs"
+ ) ; then
+ xen_ctrl_version=330
xen=yes
+
+ # Xen not found or unsupported
else
if test "$xen" = "yes" ; then
feature_not_found "xen"
@@ -3009,6 +3068,7 @@ case "$target_arch2" in
if test "$xen" = "yes" -a "$target_softmmu" =
"yes" ; then
echo "CONFIG_XEN=y" >> $config_target_mak
echo "LIBS+=$xen_libs" >> $config_target_mak
+ echo "CONFIG_XEN_CTRL_INTERFACE_VERSION=$xen_ctrl_version"
>> $config_target_mak
fi
esac
case "$target_arch2" in
diff --git a/hw/xen_backend.c b/hw/xen_backend.c
index 860b038..7e78546 100644
--- a/hw/xen_backend.c
+++ b/hw/xen_backend.c
@@ -43,7 +43,8 @@
/* ------------------------------------------------------------- */
/* public */
-int xen_xc;
+qemu_xc_interface xen_xc = XC_HANDLER_INITIAL_VALUE;
+qemu_xc_gnttab xen_xcg = XC_HANDLER_INITIAL_VALUE;
struct xs_handle *xenstore = NULL;
const char *xen_protocol;
@@ -207,8 +208,8 @@ static struct XenDevice *xen_be_get_xendev(const char *type,
int dom, int dev,
xendev->debug = debug;
xendev->local_port = -1;
- xendev->evtchndev = xc_evtchn_open();
- if (xendev->evtchndev < 0) {
+ xendev->evtchndev = xc_evtchn_open(NULL, 0);
+ if (xendev->evtchndev == XC_HANDLER_INITIAL_VALUE) {
xen_be_printf(NULL, 0, "can''t open evtchn
device\n");
qemu_free(xendev);
return NULL;
@@ -216,15 +217,15 @@ static struct XenDevice *xen_be_get_xendev(const char
*type, int dom, int dev,
fcntl(xc_evtchn_fd(xendev->evtchndev), F_SETFD, FD_CLOEXEC);
if (ops->flags & DEVOPS_FLAG_NEED_GNTDEV) {
- xendev->gnttabdev = xc_gnttab_open();
- if (xendev->gnttabdev < 0) {
+ xendev->gnttabdev = xc_gnttab_open(NULL, 0);
+ if (xendev->gnttabdev == XC_HANDLER_INITIAL_VALUE) {
xen_be_printf(NULL, 0, "can''t open gnttab
device\n");
xc_evtchn_close(xendev->evtchndev);
qemu_free(xendev);
return NULL;
}
} else {
- xendev->gnttabdev = -1;
+ xendev->gnttabdev = XC_HANDLER_INITIAL_VALUE;
}
QTAILQ_INSERT_TAIL(&xendevs, xendev, next);
@@ -266,9 +267,9 @@ static struct XenDevice *xen_be_del_xendev(int dom, int dev)
qemu_free(xendev->fe);
}
- if (xendev->evtchndev >= 0)
+ if (xendev->evtchndev != XC_HANDLER_INITIAL_VALUE)
xc_evtchn_close(xendev->evtchndev);
- if (xendev->gnttabdev >= 0)
+ if (xendev->gnttabdev != XC_HANDLER_INITIAL_VALUE)
xc_gnttab_close(xendev->gnttabdev);
QTAILQ_REMOVE(&xendevs, xendev, next);
@@ -627,8 +628,8 @@ int xen_be_init(void)
if (qemu_set_fd_handler(xs_fileno(xenstore), xenstore_update, NULL, NULL)
< 0)
goto err;
- xen_xc = xc_interface_open();
- if (xen_xc == -1) {
+ xen_xc = xc_interface_open(0, 0, 0);
+ if (xen_xc == XC_HANDLER_INITIAL_VALUE) {
xen_be_printf(NULL, 0, "can''t open xen
interface\n");
goto err;
}
diff --git a/hw/xen_backend.h b/hw/xen_backend.h
index 1b428e3..24f69d4 100644
--- a/hw/xen_backend.h
+++ b/hw/xen_backend.h
@@ -2,6 +2,7 @@
#define QEMU_HW_XEN_BACKEND_H 1
#include "xen_common.h"
+#include "xen_redirect.h"
#include "sysemu.h"
#include "net.h"
@@ -45,8 +46,8 @@ struct XenDevice {
int remote_port;
int local_port;
- int evtchndev;
- int gnttabdev;
+ qemu_xc_evtchn evtchndev;
+ qemu_xc_gnttab gnttabdev;
struct XenDevOps *ops;
QTAILQ_ENTRY(XenDevice) next;
@@ -55,7 +56,7 @@ struct XenDevice {
/* ------------------------------------------------------------- */
/* variables */
-extern int xen_xc;
+extern qemu_xc_interface xen_xc;
extern struct xs_handle *xenstore;
extern const char *xen_protocol;
diff --git a/hw/xen_common.h b/hw/xen_common.h
index 8a55b44..33df207 100644
--- a/hw/xen_common.h
+++ b/hw/xen_common.h
@@ -1,6 +1,8 @@
#ifndef QEMU_HW_XEN_COMMON_H
#define QEMU_HW_XEN_COMMON_H 1
+#include "config-target.h"
+
#include <stddef.h>
#include <inttypes.h>
@@ -13,22 +15,26 @@
#include "qemu-queue.h"
/*
- * tweaks needed to build with different xen versions
- * 0x00030205 -> 3.1.0
- * 0x00030207 -> 3.2.0
- * 0x00030208 -> unstable
+ * We don''t support Xen prior to 3.3.0.
*/
-#include <xen/xen-compat.h>
-#if __XEN_LATEST_INTERFACE_VERSION__ < 0x00030205
-# define evtchn_port_or_error_t int
-#endif
-#if __XEN_LATEST_INTERFACE_VERSION__ < 0x00030207
-# define xc_map_foreign_pages xc_map_foreign_batch
-#endif
-#if __XEN_LATEST_INTERFACE_VERSION__ < 0x00030208
-# define xen_mb() mb()
-# define xen_rmb() rmb()
-# define xen_wmb() wmb()
+
+/* Xen unstable */
+#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 410
+typedef int qemu_xc_interface;
+# define XC_HANDLER_INITIAL_VALUE -1
+static inline int xc_fd(int xen_xc)
+{
+ return xen_xc;
+}
+#else
+typedef xc_interface *qemu_xc_interface;
+# define XC_HANDLER_INITIAL_VALUE NULL
+/* FIXME The fd of xen_xc is now xen_xc->fd */
+/* fd is the first field, so this works */
+static inline int xc_fd(xc_interface *xen_xc)
+{
+ return *(int*)xen_xc;
+}
#endif
#endif /* QEMU_HW_XEN_COMMON_H */
diff --git a/hw/xen_disk.c b/hw/xen_disk.c
index 7f6aaca..454086a 100644
--- a/hw/xen_disk.c
+++ b/hw/xen_disk.c
@@ -239,7 +239,7 @@ err:
static void ioreq_unmap(struct ioreq *ioreq)
{
- int gnt = ioreq->blkdev->xendev.gnttabdev;
+ qemu_xc_gnttab gnt = ioreq->blkdev->xendev.gnttabdev;
int i;
if (ioreq->v.niov == 0)
@@ -267,7 +267,7 @@ static void ioreq_unmap(struct ioreq *ioreq)
static int ioreq_map(struct ioreq *ioreq)
{
- int gnt = ioreq->blkdev->xendev.gnttabdev;
+ qemu_xc_gnttab gnt = ioreq->blkdev->xendev.gnttabdev;
int i;
if (ioreq->v.niov == 0)
diff --git a/hw/xen_domainbuild.c b/hw/xen_domainbuild.c
index 7f1fd66..232a456 100644
--- a/hw/xen_domainbuild.c
+++ b/hw/xen_domainbuild.c
@@ -176,7 +176,7 @@ static int xen_domain_watcher(void)
for (i = 3; i < n; i++) {
if (i == fd[0])
continue;
- if (i == xen_xc)
+ if (i == xc_fd(xen_xc))
continue;
close(i);
}
diff --git a/hw/xen_interfaces.c b/hw/xen_interfaces.c
index 09f40e0..1fee58f 100644
--- a/hw/xen_interfaces.c
+++ b/hw/xen_interfaces.c
@@ -1,20 +1,37 @@
+#include "config-host.h"
+
#include <xenctrl.h>
#include <xs.h>
#include "hw.h"
#include "xen.h"
+#include "xen_common.h"
#include "xen_interfaces.h"
#ifdef CONFIG_XEN
-static int xc_evtchn_domid(int handle, int domid)
+# if CONFIG_XEN_CTRL_INTERFACE_VERSION < 410
+static int evtchn_open(xentoollog_logger *logger, unsigned open_flags)
{
- return -1;
+ return xc_evtchn_open();
}
static struct XenEvtOps xc_evtchn_xen = {
+ .open = evtchn_open,
+ .close = xc_evtchn_close,
+ .fd = xc_evtchn_fd,
+ .notify = xc_evtchn_notify,
+ .bind_unbound_port = xc_evtchn_bind_unbound_port,
+ .bind_interdomain = xc_evtchn_bind_interdomain,
+ .bind_virq = xc_evtchn_bind_virq,
+ .unbind = xc_evtchn_unbind,
+ .pending = xc_evtchn_pending,
+ .unmask = xc_evtchn_unmask,
+};
+
+# else /* CONFIG_XEN_CTRL_INTERFACE_VERSION >= 410 */
+static struct XenEvtOps xc_evtchn_xen = {
.open = xc_evtchn_open,
- .domid = xc_evtchn_domid,
.close = xc_evtchn_close,
.fd = xc_evtchn_fd,
.notify = xc_evtchn_notify,
@@ -25,6 +42,7 @@ static struct XenEvtOps xc_evtchn_xen = {
.pending = xc_evtchn_pending,
.unmask = xc_evtchn_unmask,
};
+# endif
static int xs_domid(struct xs_handle *h, int domid)
{
@@ -57,6 +75,24 @@ static struct XenStoreOps xs_xen = {
.is_domain_introduced = xs_is_domain_introduced,
};
+/* ------------------------------------------------------------- */
+/* xen grant table interface */
+
+# if CONFIG_XEN_CTRL_INTERFACE_VERSION < 410
+static int gnttab_open(xentoollog_logger *logger, unsigned open_flags)
+{
+ return xc_gnttab_open();
+}
+
+static struct XenGnttabOps xc_gnttab_xen = {
+ .open = gnttab_open,
+ .close = xc_gnttab_close,
+ .map_grant_ref = xc_gnttab_map_grant_ref,
+ .map_grant_refs = xc_gnttab_map_grant_refs,
+ .munmap = xc_gnttab_munmap,
+};
+
+# else /* CONFIG_XEN_CTRL_INTERFACE_VERSION >= 410 */
static struct XenGnttabOps xc_gnttab_xen = {
.open = xc_gnttab_open,
.close = xc_gnttab_close,
@@ -64,19 +100,66 @@ static struct XenGnttabOps xc_gnttab_xen = {
.map_grant_refs = xc_gnttab_map_grant_refs,
.munmap = xc_gnttab_munmap,
};
+# endif
+/* ------------------------------------------------------------- */
+/* xen hypercall interface */
+
+# if CONFIG_XEN_CTRL_INTERFACE_VERSION < 400
+static qemu_xc_interface interface_open(xentoollog_logger *logger,
+ xentoollog_logger *dombuild_logger,
+ unsigned open_flags)
+{
+ return xc_interface_open();
+}
+
+static void *map_foreign_batch(int xc_handle, uint32_t dom, int prot,
+ const xen_pfn_t *arr, int *err, unsigned int
num)
+{
+ return xc_map_foreign_batch(xc_handle, dom, prot, (xen_pfn_t*)arr, num);
+}
+
+struct XenIfOps xc_xen = {
+ .interface_open = interface_open,
+ .interface_close = xc_interface_close,
+ .map_foreign_range = xc_map_foreign_range,
+ .map_foreign_pages = xc_map_foreign_pages,
+ .map_foreign_bulk = map_foreign_batch,
+ .domain_populate_physmap_exact = xc_domain_memory_populate_physmap,
+};
+
+# elif CONFIG_XEN_CTRL_INTERFACE_VERSION < 410
+static qemu_xc_interface interface_open(xentoollog_logger *logger,
+ xentoollog_logger *dombuild_logger,
+ unsigned open_flags)
+{
+ return xc_interface_open();
+}
+
+struct XenIfOps xc_xen = {
+ .interface_open = interface_open,
+ .interface_close = xc_interface_close,
+ .map_foreign_range = xc_map_foreign_range,
+ .map_foreign_pages = xc_map_foreign_pages,
+ .map_foreign_bulk = xc_map_foreign_bulk,
+ .domain_populate_physmap_exact = xc_domain_memory_populate_physmap,
+};
+
+# else /* CONFIG_XEN_CTRL_INTERFACE_VERSION >= 410 */
struct XenIfOps xc_xen = {
.interface_open = xc_interface_open,
.interface_close = xc_interface_close,
.map_foreign_range = xc_map_foreign_range,
.map_foreign_pages = xc_map_foreign_pages,
.map_foreign_bulk = xc_map_foreign_bulk,
+ .domain_populate_physmap_exact = xc_domain_populate_physmap_exact,
};
+# endif
-#endif
+#endif /* CONFIG_XEN */
-struct XenEvtOps xc_evtchn;
-struct XenGnttabOps xc_gnttab;
+struct XenEvtOps xc_evtchn_ops;
+struct XenGnttabOps xc_gnttab_ops;
struct XenIfOps xc;
struct XenStoreOps xs;
@@ -86,10 +169,10 @@ void xen_interfaces_init(void)
#ifdef CONFIG_XEN
case XEN_ATTACH:
case XEN_CREATE:
- xc_evtchn = xc_evtchn_xen;
- xc_gnttab = xc_gnttab_xen;
- xc = xc_xen;
- xs = xs_xen;
+ xc_evtchn_ops = xc_evtchn_xen;
+ xc_gnttab_ops = xc_gnttab_xen;
+ xc = xc_xen;
+ xs = xs_xen;
break;
#endif
default:
diff --git a/hw/xen_interfaces.h b/hw/xen_interfaces.h
index 1086850..2afc0b3 100644
--- a/hw/xen_interfaces.h
+++ b/hw/xen_interfaces.h
@@ -4,24 +4,36 @@
#include <xenctrl.h>
#include <xs.h>
+#include "hw/xen_common.h"
+
+
+#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 410
+typedef struct xentoollog_logger xentoollog_logger;
+#endif
+
/* ------------------------------------------------------------- */
/* xen event channel interface */
+#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 410
+typedef int qemu_xc_evtchn;
+#else
+typedef xc_evtchn *qemu_xc_evtchn;
+#endif
+
struct XenEvtOps {
- int (*open)(void);
- int (*domid)(int xce_handle, int domid);
- int (*close)(int xce_handle);
- int (*fd)(int xce_handle);
- int (*notify)(int xce_handle, evtchn_port_t port);
- evtchn_port_or_error_t (*bind_unbound_port)(int xce_handle, int domid);
- evtchn_port_or_error_t (*bind_interdomain)(int xce_handle, int domid,
+ qemu_xc_evtchn (*open)(xentoollog_logger *logger, unsigned open_flags);
+ int (*close)(qemu_xc_evtchn xce);
+ int (*fd)(qemu_xc_evtchn xce);
+ int (*notify)(qemu_xc_evtchn xce, evtchn_port_t port);
+ evtchn_port_or_error_t (*bind_unbound_port)(qemu_xc_evtchn xce, int domid);
+ evtchn_port_or_error_t (*bind_interdomain)(qemu_xc_evtchn xce, int domid,
evtchn_port_t remote_port);
- evtchn_port_or_error_t (*bind_virq)(int xce_handle, unsigned int virq);
- int (*unbind)(int xce_handle, evtchn_port_t port);
- evtchn_port_or_error_t (*pending)(int xce_handle);
- int (*unmask)(int xce_handle, evtchn_port_t port);
+ evtchn_port_or_error_t (*bind_virq)(qemu_xc_evtchn xce, unsigned int virq);
+ int (*unbind)(qemu_xc_evtchn xce, evtchn_port_t port);
+ evtchn_port_or_error_t (*pending)(qemu_xc_evtchn xce);
+ int (*unmask)(qemu_xc_evtchn xce, evtchn_port_t port);
};
-extern struct XenEvtOps xc_evtchn;
+extern struct XenEvtOps xc_evtchn_ops;
/* ------------------------------------------------------------- */
/* xenstore interface */
@@ -70,30 +82,44 @@ extern struct XenStoreOps xs;
/* ------------------------------------------------------------- */
/* xen grant table interface */
+#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 410
+typedef int qemu_xc_gnttab;
+#else
+typedef xc_gnttab *qemu_xc_gnttab;
+#endif
+
struct XenGnttabOps {
- int (*open)(void);
- int (*close)(int xcg_handle);
- void *(*map_grant_ref)(int xcg_handle, uint32_t domid,
- uint32_t ref, int prot);
- void *(*map_grant_refs)(int xcg_handle, uint32_t count,
+ qemu_xc_gnttab (*open)(xentoollog_logger *logger, unsigned open_flags);
+ int (*close)(qemu_xc_gnttab xcg);
+ void *(*map_grant_ref)(qemu_xc_gnttab xcg, uint32_t domid,
+ uint32_t ref, int prot);
+ void *(*map_grant_refs)(qemu_xc_gnttab xcg, uint32_t count,
uint32_t *domids, uint32_t *refs, int prot);
- int (*munmap)(int xcg_handle, void *start_address, uint32_t count);
+ int (*munmap)(qemu_xc_gnttab xcg, void *start_address, uint32_t count);
};
-extern struct XenGnttabOps xc_gnttab;
+extern struct XenGnttabOps xc_gnttab_ops;
/* ------------------------------------------------------------- */
/* xen hypercall interface */
struct XenIfOps {
- int (*interface_open)(void);
- int (*interface_close)(int xc_handle);
- void *(*map_foreign_range)(int xc_handle, uint32_t dom,
+ qemu_xc_interface (*interface_open)(xentoollog_logger *logger,
+ xentoollog_logger *dombuild_logger,
+ unsigned open_flags);
+ int (*interface_close)(qemu_xc_interface xc_handle);
+ void *(*map_foreign_range)(qemu_xc_interface xc_handle, uint32_t dom,
int size, int prot,
unsigned long mfn);
- void *(*map_foreign_pages)(int xc_handle, uint32_t dom, int prot,
+ void *(*map_foreign_pages)(qemu_xc_interface xc_handle, uint32_t dom, int
prot,
const xen_pfn_t *arr, int num);
- void *(*map_foreign_bulk)(int xc_handle, uint32_t dom, int prot,
- xen_pfn_t *arr, int num);
+ void *(*map_foreign_bulk)(qemu_xc_interface xc_handle, uint32_t dom, int
prot,
+ const xen_pfn_t *arr, int *err, unsigned int
num);
+ int (*domain_populate_physmap_exact)(qemu_xc_interface xc_handle,
+ uint32_t domid,
+ unsigned long nr_extents,
+ unsigned int extent_order,
+ unsigned int mem_flags,
+ xen_pfn_t *extent_start);
};
extern struct XenIfOps xc;
diff --git a/hw/xen_redirect.h b/hw/xen_redirect.h
index 6ddecf3..c0cb1ab 100644
--- a/hw/xen_redirect.h
+++ b/hw/xen_redirect.h
@@ -4,23 +4,23 @@
#include "xen_interfaces.h"
/* xen event channel interface */
-#define xc_evtchn_open xc_evtchn.open
-#define xc_evtchn_close xc_evtchn.close
-#define xc_evtchn_fd xc_evtchn.fd
-#define xc_evtchn_notify xc_evtchn.notify
-#define xc_evtchn_bind_unbound_port xc_evtchn.bind_unbound_port
-#define xc_evtchn_bind_interdomain xc_evtchn.bind_interdomain
-#define xc_evtchn_bind_virq xc_evtchn.bind_virq
-#define xc_evtchn_unbind xc_evtchn.unbind
-#define xc_evtchn_pending xc_evtchn.pending
-#define xc_evtchn_unmask xc_evtchn.unmask
+#define xc_evtchn_open xc_evtchn_ops.open
+#define xc_evtchn_close xc_evtchn_ops.close
+#define xc_evtchn_fd xc_evtchn_ops.fd
+#define xc_evtchn_notify xc_evtchn_ops.notify
+#define xc_evtchn_bind_unbound_port xc_evtchn_ops.bind_unbound_port
+#define xc_evtchn_bind_interdomain xc_evtchn_ops.bind_interdomain
+#define xc_evtchn_bind_virq xc_evtchn_ops.bind_virq
+#define xc_evtchn_unbind xc_evtchn_ops.unbind
+#define xc_evtchn_pending xc_evtchn_ops.pending
+#define xc_evtchn_unmask xc_evtchn_ops.unmask
/* grant table interface */
-#define xc_gnttab_open xc_gnttab.open
-#define xc_gnttab_close xc_gnttab.close
-#define xc_gnttab_map_grant_ref xc_gnttab.map_grant_ref
-#define xc_gnttab_map_grant_refs xc_gnttab.map_grant_refs
-#define xc_gnttab_munmap xc_gnttab.munmap
+#define xc_gnttab_open xc_gnttab_ops.open
+#define xc_gnttab_close xc_gnttab_ops.close
+#define xc_gnttab_map_grant_ref xc_gnttab_ops.map_grant_ref
+#define xc_gnttab_map_grant_refs xc_gnttab_ops.map_grant_refs
+#define xc_gnttab_munmap xc_gnttab_ops.munmap
/* xen hypercall interface */
#define xc_interface_open xc.interface_open
@@ -28,6 +28,8 @@
#define xc_map_foreign_range xc.map_foreign_range
#define xc_map_foreign_pages xc.map_foreign_pages
#define xc_map_foreign_bulk xc.map_foreign_bulk
+#define xc_domain_populate_physmap_exact \
+ xc.domain_populate_physmap_exact
/* xenstore interface */
#define xs_daemon_open xs.daemon_open
--
1.7.1
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xensource.com
http://lists.xensource.com/xen-devel
anthony.perard@citrix.com
2011-Jan-25 14:29 UTC
[Xen-devel] [PATCH V9 05/16] xen: Add xen_machine_fv
From: Anthony PERARD <anthony.perard@citrix.com>
Add the Xen FV (Fully Virtualized) machine to Qemu;
this is groundwork to add Xen device model support in Qemu.
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
---
Makefile.target | 3 +
hw/xen_common.h | 5 ++
hw/xen_machine_fv.c | 159 +++++++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 167 insertions(+), 0 deletions(-)
create mode 100644 hw/xen_machine_fv.c
diff --git a/Makefile.target b/Makefile.target
index d09719f..07cc21e 100644
--- a/Makefile.target
+++ b/Makefile.target
@@ -213,6 +213,9 @@ obj-$(CONFIG_XEN) += xen_backend.o xen_devconfig.o
obj-$(CONFIG_XEN) += xen_console.o xenfb.o xen_disk.o xen_nic.o
obj-i386-$(CONFIG_XEN) += xen_machine_pv.o xen_domainbuild.o
+# xen full virtualized machine
+obj-i386-$(CONFIG_XEN) += xen_machine_fv.o
+
# Inter-VM PCI shared memory
obj-$(CONFIG_KVM) += ivshmem.o
diff --git a/hw/xen_common.h b/hw/xen_common.h
index 33df207..b98d107 100644
--- a/hw/xen_common.h
+++ b/hw/xen_common.h
@@ -18,6 +18,11 @@
* We don''t support Xen prior to 3.3.0.
*/
+/* Before Xen 4.0.0 */
+#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 400
+# define HVM_MAX_VCPUS 32
+#endif
+
/* Xen unstable */
#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 410
typedef int qemu_xc_interface;
diff --git a/hw/xen_machine_fv.c b/hw/xen_machine_fv.c
new file mode 100644
index 0000000..657c1e8
--- /dev/null
+++ b/hw/xen_machine_fv.c
@@ -0,0 +1,159 @@
+/*
+ * QEMU Xen FV Machine
+ *
+ * Copyright (c) 2003-2007 Fabrice Bellard
+ * Copyright (c) 2007 Red Hat
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the
"Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "hw.h"
+#include "pc.h"
+#include "pci.h"
+#include "usb-uhci.h"
+#include "net.h"
+#include "boards.h"
+#include "ide.h"
+#include "sysemu.h"
+#include "blockdev.h"
+#include "arch_init.h"
+
+#include "xen_common.h"
+#include "xen/hvm/hvm_info_table.h"
+
+#define MAX_IDE_BUS 2
+
+static void xen_init_fv(ram_addr_t ram_size,
+ const char *boot_device,
+ const char *kernel_filename,
+ const char *kernel_cmdline,
+ const char *initrd_filename,
+ const char *cpu_model)
+{
+ int i;
+ ram_addr_t below_4g_mem_size, above_4g_mem_size = 0;
+ PCIBus *pci_bus;
+ PCII440FXState *i440fx_state;
+ int piix3_devfn = -1;
+ qemu_irq *cpu_irq;
+ qemu_irq *isa_irq;
+ qemu_irq *i8259;
+ qemu_irq *cmos_s3;
+ qemu_irq *smi_irq;
+ IsaIrqState *isa_irq_state;
+ DriveInfo *hd[MAX_IDE_BUS * MAX_IDE_DEVS];
+ FDCtrl *floppy_controller;
+ BusState *idebus[MAX_IDE_BUS];
+ ISADevice *rtc_state;
+
+ CPUState *env;
+
+ /* Initialize a dummy CPU */
+ if (cpu_model == NULL) {
+#ifdef TARGET_X86_64
+ cpu_model = "qemu64";
+#else
+ cpu_model = "qemu32";
+#endif
+ }
+ env = cpu_init(cpu_model);
+ env->halted = 1;
+
+ cpu_irq = pc_allocate_cpu_irq();
+ i8259 = i8259_init(cpu_irq[0]);
+ isa_irq_state = qemu_mallocz(sizeof (*isa_irq_state));
+ isa_irq_state->i8259 = i8259;
+
+ isa_irq = qemu_allocate_irqs(isa_irq_handler, isa_irq_state, 24);
+
+ pci_bus = i440fx_init(&i440fx_state, &piix3_devfn, isa_irq,
ram_size);
+ isa_bus_irqs(isa_irq);
+
+ pc_register_ferr_irq(isa_reserve_irq(13));
+
+ pc_vga_init(pci_bus);
+
+ /* init basic PC hardware */
+ pc_basic_device_init(isa_irq, &floppy_controller, &rtc_state);
+
+ for (i = 0; i < nb_nics; i++) {
+ NICInfo *nd = &nd_table[i];
+
+ if (nd->model && strcmp(nd->model, "ne2k_isa")
== 0)
+ pc_init_ne2k_isa(nd);
+ else
+ pci_nic_init_nofail(nd, "e1000", NULL);
+ }
+
+ if (drive_get_max_bus(IF_IDE) >= MAX_IDE_BUS) {
+ fprintf(stderr, "qemu: too many IDE bus\n");
+ exit(1);
+ }
+
+ for (i = 0; i < MAX_IDE_BUS * MAX_IDE_DEVS; i++) {
+ hd[i] = drive_get(IF_IDE, i / MAX_IDE_DEVS, i % MAX_IDE_DEVS);
+ }
+
+ PCIDevice *dev = pci_piix3_ide_init(pci_bus, hd, piix3_devfn + 1);
+ idebus[0] = qdev_get_child_bus(&dev->qdev, "ide.0");
+ idebus[1] = qdev_get_child_bus(&dev->qdev, "ide.1");
+
+ audio_init(isa_irq, pci_bus);
+
+ if (ram_size >= 0xe0000000) {
+ above_4g_mem_size = ram_size - 0xe0000000;
+ below_4g_mem_size = 0xe0000000;
+ } else {
+ below_4g_mem_size = ram_size;
+ }
+ pc_cmos_init(below_4g_mem_size, above_4g_mem_size, boot_device,
+ idebus[0], idebus[1], floppy_controller, rtc_state);
+
+ if (usb_enabled) {
+ usb_uhci_piix3_init(pci_bus, piix3_devfn + 2);
+ }
+
+ if (acpi_enabled) {
+ cmos_s3 = qemu_allocate_irqs(pc_cmos_set_s3_resume, rtc_state, 1);
+ smi_irq = qemu_allocate_irqs(pc_acpi_smi_interrupt, first_cpu, 1);
+ piix4_pm_init(pci_bus, piix3_devfn + 3, 0xb100,
+ isa_reserve_irq(9), *cmos_s3, *smi_irq, 0);
+ }
+
+ if (i440fx_state) {
+ i440fx_init_memory_mappings(i440fx_state);
+ }
+
+ pc_pci_device_init(pci_bus);
+}
+
+static QEMUMachine xenfv_machine = {
+ .name = "xenfv",
+ .desc = "Xen Fully-virtualized PC",
+ .init = xen_init_fv,
+ .max_cpus = HVM_MAX_VCPUS,
+ .default_machine_opts = "accel=xen",
+};
+
+static void xenfv_machine_init(void)
+{
+ qemu_register_machine(&xenfv_machine);
+}
+
+machine_init(xenfv_machine_init);
--
1.7.1
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xensource.com
http://lists.xensource.com/xen-devel
anthony.perard@citrix.com
2011-Jan-25 14:29 UTC
[Xen-devel] [PATCH V9 06/16] xen: Add initialisation of Xen
From: Anthony PERARD <anthony.perard@citrix.com>
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
---
Makefile.target | 3 +++
hw/xen.h | 13 +++++++++++++
vl.c | 2 ++
xen-all.c | 29 +++++++++++++++++++++++++++++
xen-stub.c | 17 +++++++++++++++++
5 files changed, 64 insertions(+), 0 deletions(-)
create mode 100644 xen-all.c
create mode 100644 xen-stub.c
diff --git a/Makefile.target b/Makefile.target
index 07cc21e..8b5fe36 100644
--- a/Makefile.target
+++ b/Makefile.target
@@ -3,6 +3,7 @@
GENERATED_HEADERS = config-target.h
CONFIG_NO_PCI = $(if $(subst n,,$(CONFIG_PCI)),n,y)
CONFIG_NO_KVM = $(if $(subst n,,$(CONFIG_KVM)),n,y)
+CONFIG_NO_XEN = $(if $(subst n,,$(CONFIG_XEN)),n,y)
include ../config-host.mak
include config-devices.mak
@@ -207,6 +208,8 @@ QEMU_CFLAGS += $(VNC_PNG_CFLAGS)
# xen support
obj-$(CONFIG_XEN) += xen_interfaces.o
+obj-$(CONFIG_XEN) += xen-all.o
+obj-$(CONFIG_NO_XEN) += xen-stub.o
# xen backend driver support
obj-$(CONFIG_XEN) += xen_backend.o xen_devconfig.o
diff --git a/hw/xen.h b/hw/xen.h
index 780dcf7..183cbb5 100644
--- a/hw/xen.h
+++ b/hw/xen.h
@@ -18,4 +18,17 @@ enum xen_mode {
extern uint32_t xen_domid;
extern enum xen_mode xen_mode;
+extern int xen_allowed;
+
+static inline int xen_enabled(void)
+{
+#ifdef CONFIG_XEN
+ return xen_allowed;
+#else
+ return 0;
+#endif
+}
+
+int xen_init(int smp_cpus);
+
#endif /* QEMU_HW_XEN_H */
diff --git a/vl.c b/vl.c
index 626f4e1..38fa281 100644
--- a/vl.c
+++ b/vl.c
@@ -259,6 +259,7 @@ static NotifierList machine_init_done_notifiers
static int tcg_allowed = 1;
int kvm_allowed = 0;
+int xen_allowed = 0;
uint32_t xen_domid;
enum xen_mode xen_mode = XEN_EMULATE;
@@ -1836,6 +1837,7 @@ static struct {
int *allowed;
} accel_list[] = {
{ "tcg", "tcg", tcg_available, tcg_init,
&tcg_allowed },
+ { "xen", "Xen", xen_available, xen_init,
&xen_allowed },
{ "kvm", "KVM", kvm_available, kvm_init,
&kvm_allowed },
};
diff --git a/xen-all.c b/xen-all.c
new file mode 100644
index 0000000..29c8002
--- /dev/null
+++ b/xen-all.c
@@ -0,0 +1,29 @@
+/*
+ * Copyright (C) 2010 Citrix Ltd.
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2. See
+ * the COPYING file in the top-level directory.
+ *
+ */
+
+#include "config.h"
+
+#include "hw/xen_common.h"
+#include "hw/xen_backend.h"
+#include "hw/xen_redirect.h"
+
+/* Initialise Xen */
+
+int xen_init(int smp_cpus)
+{
+ if (xen_mode == XEN_EMULATE)
+ xen_mode = XEN_ATTACH;
+ xen_interfaces_init();
+ xen_xc = xc_interface_open(0, 0, 0);
+ if (xen_xc == XC_HANDLER_INITIAL_VALUE) {
+ xen_be_printf(NULL, 0, "can''t open xen
interface\n");
+ return -1;
+ }
+
+ return 0;
+}
diff --git a/xen-stub.c b/xen-stub.c
new file mode 100644
index 0000000..0fa9c51
--- /dev/null
+++ b/xen-stub.c
@@ -0,0 +1,17 @@
+/*
+ * Copyright (C) 2010 Citrix Ltd.
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2. See
+ * the COPYING file in the top-level directory.
+ *
+ */
+
+#include "config.h"
+
+#include "qemu-common.h"
+#include "hw/xen.h"
+
+int xen_init(int smp_cpus)
+{
+ return -ENOSYS;
+}
--
1.7.1
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xensource.com
http://lists.xensource.com/xen-devel
anthony.perard@citrix.com
2011-Jan-25 14:29 UTC
[Xen-devel] [PATCH V9 07/16] xen: Add the Xen platform pci device
From: Steven Smith <ssmith@xensource.com>
Introduce a new emulated PCI device, specific to fully virtualized Xen
guests. The device is necessary for PV on HVM drivers to work.
Signed-off-by: Steven Smith <ssmith@xensource.com>
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
---
Makefile.target | 1 +
hw/hw.h | 3 +
hw/pci_ids.h | 2 +
hw/xen_machine_fv.c | 3 +
hw/xen_platform.c | 427 +++++++++++++++++++++++++++++++++++++++++++++++++++
hw/xen_platform.h | 8 +
6 files changed, 444 insertions(+), 0 deletions(-)
create mode 100644 hw/xen_platform.c
create mode 100644 hw/xen_platform.h
diff --git a/Makefile.target b/Makefile.target
index 8b5fe36..8126da9 100644
--- a/Makefile.target
+++ b/Makefile.target
@@ -218,6 +218,7 @@ obj-i386-$(CONFIG_XEN) += xen_machine_pv.o xen_domainbuild.o
# xen full virtualized machine
obj-i386-$(CONFIG_XEN) += xen_machine_fv.o
+obj-i386-$(CONFIG_XEN) += xen_platform.o
# Inter-VM PCI shared memory
obj-$(CONFIG_KVM) += ivshmem.o
diff --git a/hw/hw.h b/hw/hw.h
index dd993de..298df31 100644
--- a/hw/hw.h
+++ b/hw/hw.h
@@ -672,6 +672,9 @@ extern const VMStateDescription vmstate_i2c_slave;
#define VMSTATE_INT32_LE(_f, _s) \
VMSTATE_SINGLE(_f, _s, 0, vmstate_info_int32_le, int32_t)
+#define VMSTATE_UINT8_TEST(_f, _s, _t) \
+ VMSTATE_SINGLE_TEST(_f, _s, _t, 0, vmstate_info_uint8, uint8_t)
+
#define VMSTATE_UINT16_TEST(_f, _s, _t) \
VMSTATE_SINGLE_TEST(_f, _s, _t, 0, vmstate_info_uint16, uint16_t)
diff --git a/hw/pci_ids.h b/hw/pci_ids.h
index ea3418c..6e9eabc 100644
--- a/hw/pci_ids.h
+++ b/hw/pci_ids.h
@@ -108,3 +108,5 @@
#define PCI_DEVICE_ID_INTEL_82371AB 0x7111
#define PCI_DEVICE_ID_INTEL_82371AB_2 0x7112
#define PCI_DEVICE_ID_INTEL_82371AB_3 0x7113
+
+#define PCI_VENDOR_ID_XENSOURCE 0x5853
diff --git a/hw/xen_machine_fv.c b/hw/xen_machine_fv.c
index 657c1e8..2f51625 100644
--- a/hw/xen_machine_fv.c
+++ b/hw/xen_machine_fv.c
@@ -36,6 +36,7 @@
#include "xen_common.h"
#include "xen/hvm/hvm_info_table.h"
+#include "xen_platform.h"
#define MAX_IDE_BUS 2
@@ -89,6 +90,8 @@ static void xen_init_fv(ram_addr_t ram_size,
pc_vga_init(pci_bus);
+ pci_xen_platform_init(pci_bus);
+
/* init basic PC hardware */
pc_basic_device_init(isa_irq, &floppy_controller, &rtc_state);
diff --git a/hw/xen_platform.c b/hw/xen_platform.c
new file mode 100644
index 0000000..abfcdb7
--- /dev/null
+++ b/hw/xen_platform.c
@@ -0,0 +1,427 @@
+/*
+ * XEN platform pci device, formerly known as the event channel device
+ *
+ * Copyright (c) 2003-2004 Intel Corp.
+ * Copyright (c) 2006 XenSource
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the
"Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "hw.h"
+#include "pc.h"
+#include "pci.h"
+#include "irq.h"
+#include "xen_common.h"
+#include "net.h"
+#include "xen_platform.h"
+#include "xen_backend.h"
+#include "qemu-log.h"
+#include "rwhandler.h"
+
+#include <assert.h>
+#include <xenguest.h>
+
+//#define DEBUG_PLATFORM
+
+#ifdef DEBUG_PLATFORM
+#define DPRINTF(fmt, ...) do { \
+ fprintf(stderr, "xen_platform: " fmt, ## __VA_ARGS__); \
+} while (0)
+#else
+#define DPRINTF(fmt, ...) do { } while (0)
+#endif
+
+#define PFFLAG_ROM_LOCK 1 /* Sets whether ROM memory area is RW or RO */
+
+typedef struct PCIXenPlatformState {
+ PCIDevice pci_dev;
+ uint8_t flags; /* used only for version_id == 2 */
+ int drivers_blacklisted;
+ uint16_t driver_product_version;
+
+ /* Log from guest drivers */
+ int throttling_disabled;
+ char log_buffer[4096];
+ int log_buffer_off;
+} PCIXenPlatformState;
+
+#define XEN_PLATFORM_IOPORT 0x10
+
+/* We throttle access to dom0 syslog, to avoid DOS attacks. This is
+ modelled as a token bucket, with one token for every byte of log.
+ The bucket size is 128KB (->1024 lines of 128 bytes each) and
+ refills at 256B/s. It starts full. The guest is blocked if no
+ tokens are available when it tries to generate a log message. */
+#define BUCKET_MAX_SIZE (128*1024)
+#define BUCKET_FILL_RATE 256
+
+static void throttle(PCIXenPlatformState *s, unsigned count)
+{
+ static unsigned available;
+ static int64_t last_refill;
+ static int started;
+ static int warned;
+
+ int64_t waiting_for, now;
+ int64_t delay;
+
+ if (s->throttling_disabled) {
+ return;
+ }
+
+ if (!started) {
+ last_refill = qemu_get_clock_ns(rt_clock);
+ available = BUCKET_MAX_SIZE;
+ started = 1;
+ }
+
+ if (count > BUCKET_MAX_SIZE) {
+ DPRINTF("tried to get %u tokens, but bucket size is %u\n",
+ BUCKET_MAX_SIZE, count);
+ exit(1);
+ }
+
+ if (available < count) {
+ /* The bucket is empty. Refill it */
+
+ /* When will it be full enough to handle this request? */
+ delay = muldiv64(count - available, 1000000000, BUCKET_FILL_RATE);
+
+ waiting_for = last_refill + delay;
+
+ /* How long do we have to wait? (might be negative) */
+ waiting_for = waiting_for - qemu_get_clock_ns(rt_clock);
+
+ /* Wait for it. */
+ if (waiting_for > 0) {
+ struct timespec ts;
+ if (!warned) {
+ DPRINTF("throttling guest access to syslog");
+ warned = 1;
+ }
+ ts.tv_sec = waiting_for / 1000000000;
+ ts.tv_nsec = waiting_for % 1000000000;
+ while (nanosleep(&ts, &ts) < 0 && errno ==
EINTR) {
+ }
+ }
+
+ /* Refill */
+ now = qemu_get_clock_ns(rt_clock);
+ available += muldiv64(now - last_refill,
+ BUCKET_FILL_RATE,
+ 1000000000);
+ if (available > BUCKET_MAX_SIZE) {
+ available = BUCKET_MAX_SIZE;
+ }
+ last_refill = now;
+ }
+
+ assert(available >= count);
+
+ available -= count;
+}
+
+/* Send bytes to syslog */
+static void log_writeb(PCIXenPlatformState *s, char val)
+{
+ if (val == ''\n'' || s->log_buffer_off ==
sizeof(s->log_buffer) - 1) {
+ /* Flush buffer */
+ s->log_buffer[s->log_buffer_off] = 0;
+ throttle(s, s->log_buffer_off);
+ DPRINTF("%s\n", s->log_buffer);
+ s->log_buffer_off = 0;
+ } else {
+ s->log_buffer[s->log_buffer_off++] = val;
+ }
+}
+
+/* Xen Platform, Fixed IOPort */
+
+static void platform_fixed_ioport_writew(void *opaque, uint32_t addr, uint32_t
val)
+{
+ PCIXenPlatformState *s = opaque;
+
+ switch (addr - XEN_PLATFORM_IOPORT) {
+ case 0:
+ /* TODO: */
+ /* Unplug devices. Value is a bitmask of which devices to
+ unplug, with bit 0 the IDE devices, bit 1 the network
+ devices, and bit 2 the non-primary-master IDE devices. */
+ break;
+ case 2:
+ switch (val) {
+ case 1:
+ DPRINTF("Citrix Windows PV drivers loaded in guest\n");
+ break;
+ case 0:
+ DPRINTF("Guest claimed to be running PV product 0?\n");
+ break;
+ default:
+ DPRINTF("Unknown PV product %d loaded in guest\n", val);
+ break;
+ }
+ s->driver_product_version = val;
+ break;
+ }
+}
+
+static void platform_fixed_ioport_writel(void *opaque, uint32_t addr,
+ uint32_t val)
+{
+ switch (addr - XEN_PLATFORM_IOPORT) {
+ case 0:
+ /* PV driver version */
+ break;
+ }
+}
+
+static void platform_fixed_ioport_writeb(void *opaque, uint32_t addr, uint32_t
val)
+{
+ PCIXenPlatformState *s = opaque;
+
+ switch (addr - XEN_PLATFORM_IOPORT) {
+ case 0: /* Platform flags */ {
+ hvmmem_type_t mem_type = (val & PFFLAG_ROM_LOCK) ?
+ HVMMEM_ram_ro : HVMMEM_ram_rw;
+ if (xc_hvm_set_mem_type(xen_xc, xen_domid, mem_type, 0xc0, 0x40)) {
+ DPRINTF("unable to change ro/rw state of ROM memory
area!\n");
+ } else {
+ s->flags = val & PFFLAG_ROM_LOCK;
+ DPRINTF("changed ro/rw state of ROM memory area. now is %s
state.\n",
+ (mem_type == HVMMEM_ram_ro ?
"ro":"rw"));
+ }
+ break;
+ }
+ case 2:
+ log_writeb(s, val);
+ break;
+ }
+}
+
+static uint32_t platform_fixed_ioport_readw(void *opaque, uint32_t addr)
+{
+ PCIXenPlatformState *s = opaque;
+
+ switch (addr - XEN_PLATFORM_IOPORT) {
+ case 0:
+ if (s->drivers_blacklisted) {
+ /* The drivers will recognise this magic number and refuse
+ * to do anything. */
+ return 0xd249;
+ } else {
+ /* Magic value so that you can identify the interface. */
+ return 0x49d2;
+ }
+ default:
+ return 0xffff;
+ }
+}
+
+static uint32_t platform_fixed_ioport_readb(void *opaque, uint32_t addr)
+{
+ PCIXenPlatformState *s = opaque;
+
+ switch (addr - XEN_PLATFORM_IOPORT) {
+ case 0:
+ /* Platform flags */
+ return s->flags;
+ case 2:
+ /* Version number */
+ return 1;
+ default:
+ return 0xff;
+ }
+}
+
+static void platform_fixed_ioport_reset(void *opaque)
+{
+ PCIXenPlatformState *s = opaque;
+
+ platform_fixed_ioport_writeb(s, XEN_PLATFORM_IOPORT, 0);
+}
+
+static void platform_fixed_ioport_init(PCIXenPlatformState* s)
+{
+ register_ioport_write(XEN_PLATFORM_IOPORT, 16, 4,
platform_fixed_ioport_writel, s);
+ register_ioport_write(XEN_PLATFORM_IOPORT, 16, 2,
platform_fixed_ioport_writew, s);
+ register_ioport_write(XEN_PLATFORM_IOPORT, 16, 1,
platform_fixed_ioport_writeb, s);
+ register_ioport_read(XEN_PLATFORM_IOPORT, 16, 2,
platform_fixed_ioport_readw, s);
+ register_ioport_read(XEN_PLATFORM_IOPORT, 16, 1,
platform_fixed_ioport_readb, s);
+}
+
+/* Xen Platform PCI Device */
+
+static uint32_t xen_platform_ioport_readb(void *opaque, uint32_t addr)
+{
+ addr &= 0xff;
+
+ if (addr == 0) {
+ return platform_fixed_ioport_readb(opaque, XEN_PLATFORM_IOPORT);
+ } else {
+ return ~0u;
+ }
+}
+
+static void xen_platform_ioport_writeb(void *opaque, uint32_t addr, uint32_t
val)
+{
+ PCIXenPlatformState *s = opaque;
+
+ addr &= 0xff;
+ val &= 0xff;
+
+ switch (addr) {
+ case 0: /* Platform flags */
+ platform_fixed_ioport_writeb(opaque, XEN_PLATFORM_IOPORT, val);
+ break;
+ case 8:
+ log_writeb(s, val);
+ break;
+ default:
+ break;
+ }
+}
+
+static void platform_ioport_map(PCIDevice *pci_dev, int region_num, pcibus_t
addr, pcibus_t size, int type)
+{
+ PCIXenPlatformState *d = DO_UPCAST(PCIXenPlatformState, pci_dev, pci_dev);
+
+ register_ioport_write(addr, size, 1, xen_platform_ioport_writeb, d);
+ register_ioport_read(addr, size, 1, xen_platform_ioport_readb, d);
+}
+
+static uint32_t platform_mmio_read(ReadWriteHandler *handler, pcibus_t addr,
int len)
+{
+ DPRINTF("Warning: attempted read from physical address "
+ "0x" TARGET_FMT_plx " in xen platform mmio
space\n", addr);
+
+ return 0;
+}
+
+static void platform_mmio_write(ReadWriteHandler *handler, pcibus_t addr,
+ uint32_t val, int len)
+{
+ DPRINTF("Warning: attempted write of 0x%x to physical "
+ "address 0x" TARGET_FMT_plx " in xen platform mmio
space\n",
+ val, addr);
+}
+
+static ReadWriteHandler platform_mmio_handler = {
+ .read = &platform_mmio_read,
+ .write = &platform_mmio_write,
+};
+
+static void platform_mmio_map(PCIDevice *d, int region_num,
+ pcibus_t addr, pcibus_t size, int type)
+{
+ int mmio_io_addr;
+
+ mmio_io_addr = cpu_register_io_memory_simple(&platform_mmio_handler,
+ DEVICE_NATIVE_ENDIAN);
+
+ cpu_register_physical_memory(addr, size, mmio_io_addr);
+}
+
+static int xen_platform_post_load(void *opaque, int version_id)
+{
+ PCIXenPlatformState *s = opaque;
+
+ platform_fixed_ioport_writeb(s, XEN_PLATFORM_IOPORT, s->flags);
+
+ return 0;
+}
+
+static const VMStateDescription vmstate_xen_platform = {
+ .name = "platform",
+ .version_id = 4,
+ .minimum_version_id = 4,
+ .minimum_version_id_old = 4,
+ .post_load = xen_platform_post_load,
+ .fields = (VMStateField []) {
+ VMSTATE_PCI_DEVICE(pci_dev, PCIXenPlatformState),
+ VMSTATE_UINT8(flags, PCIXenPlatformState),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
+static int xen_platform_initfn(PCIDevice *dev)
+{
+ PCIXenPlatformState *d = DO_UPCAST(PCIXenPlatformState, pci_dev, dev);
+ uint8_t *pci_conf;
+
+ pci_conf = d->pci_dev.config;
+
+ pci_config_set_vendor_id(pci_conf, PCI_VENDOR_ID_XENSOURCE);
+ pci_config_set_device_id(pci_conf, 0x0001);
+ pci_set_word(pci_conf + PCI_COMMAND, PCI_COMMAND_IO | PCI_COMMAND_MEMORY);
+
+ pci_config_set_revision(pci_conf, 1);
+ pci_config_set_prog_interface(pci_conf, 0);
+
+ pci_config_set_class(pci_conf, PCI_CLASS_OTHERS << 8 | 0x80);
+
+ pci_conf[PCI_INTERRUPT_PIN] = 1;
+
+ /* Microsoft WHQL requires non-zero subsystem IDs. */
+ /* http://www.pcisig.com/reflector/msg02205.html. */
+ pci_set_word(pci_conf + PCI_SUBSYSTEM_VENDOR_ID, pci_conf[PCI_VENDOR_ID]);
+ pci_set_word(pci_conf + PCI_SUBSYSTEM_ID, 0x0001);
+
+ pci_register_bar(&d->pci_dev, 0, 0x100,
+ PCI_BASE_ADDRESS_SPACE_IO, platform_ioport_map);
+
+ /* reserve 16MB mmio address for share memory*/
+ pci_register_bar(&d->pci_dev, 1, 0x1000000,
+ PCI_BASE_ADDRESS_MEM_PREFETCH, platform_mmio_map);
+
+ platform_fixed_ioport_init(d);
+
+ return 0;
+}
+
+static void platform_reset(DeviceState *dev)
+{
+ PCIXenPlatformState *s = DO_UPCAST(PCIXenPlatformState, pci_dev.qdev, dev);
+
+ platform_fixed_ioport_reset(s);
+}
+
+void pci_xen_platform_init(PCIBus *bus)
+{
+ PCIDevice *dev;
+
+ dev = pci_create(bus, -1, "xen-platform");
+
+ qdev_init_nofail(&dev->qdev);
+}
+
+static PCIDeviceInfo xen_platform_info = {
+ .init = xen_platform_initfn,
+ .qdev.name = "xen-platform",
+ .qdev.desc = "XEN platform pci device",
+ .qdev.size = sizeof(PCIXenPlatformState),
+ .qdev.vmsd = &vmstate_xen_platform,
+ .qdev.reset = platform_reset,
+};
+
+static void xen_platform_register(void)
+{
+ pci_qdev_register(&xen_platform_info);
+}
+
+device_init(xen_platform_register);
diff --git a/hw/xen_platform.h b/hw/xen_platform.h
new file mode 100644
index 0000000..574eecd
--- /dev/null
+++ b/hw/xen_platform.h
@@ -0,0 +1,8 @@
+#ifndef XEN_PLATFORM_H
+#define XEN_PLATFORM_H
+
+#include "hw/pci.h"
+
+void pci_xen_platform_init(PCIBus *bus);
+
+#endif
--
1.7.1
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xensource.com
http://lists.xensource.com/xen-devel
anthony.perard@citrix.com
2011-Jan-25 14:29 UTC
[Xen-devel] [PATCH V9 08/16] piix_pci: Introduces Xen specific call for irq.
From: Anthony PERARD <anthony.perard@citrix.com>
This patch introduces Xen specific call in piix_pci.
The specific part for Xen is in write_config, set_irq and get_pirq.
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
---
hw/piix_pci.c | 28 ++++++++++++++++++++++++++--
hw/xen.h | 6 ++++++
xen-all.c | 31 +++++++++++++++++++++++++++++++
xen-stub.c | 13 +++++++++++++
4 files changed, 76 insertions(+), 2 deletions(-)
diff --git a/hw/piix_pci.c b/hw/piix_pci.c
index 358da58..152fcc0 100644
--- a/hw/piix_pci.c
+++ b/hw/piix_pci.c
@@ -29,6 +29,7 @@
#include "isa.h"
#include "sysbus.h"
#include "range.h"
+#include "xen.h"
/*
* I440FX chipset data sheet.
@@ -151,6 +152,13 @@ static void i440fx_write_config(PCIDevice *dev,
}
}
+static void i440fx_write_config_xen(PCIDevice *dev,
+ uint32_t address, uint32_t val, int len)
+{
+ xen_piix_pci_write_config_client(address, val, len);
+ i440fx_write_config(dev, address, val, len);
+}
+
static int i440fx_load_old(QEMUFile* f, void *opaque, int version_id)
{
PCII440FXState *d = opaque;
@@ -230,13 +238,21 @@ PCIBus *i440fx_init(PCII440FXState **pi440fx_state, int
*piix3_devfn, qemu_irq *
s->bus = b;
qdev_init_nofail(dev);
- d = pci_create_simple(b, 0, "i440FX");
+ if (xen_enabled()) {
+ d = pci_create_simple(b, 0, "i440FX-xen");
+ } else {
+ d = pci_create_simple(b, 0, "i440FX");
+ }
*pi440fx_state = DO_UPCAST(PCII440FXState, dev, d);
piix3 = DO_UPCAST(PIIX3State, dev,
pci_create_simple_multifunction(b, -1, true,
"PIIX3"));
piix3->pic = pic;
- pci_bus_irqs(b, piix3_set_irq, pci_slot_get_pirq, piix3, 4);
+ if (xen_enabled()) {
+ pci_bus_irqs(b, xen_piix3_set_irq, xen_pci_slot_get_pirq, piix3, 4);
+ } else {
+ pci_bus_irqs(b, piix3_set_irq, pci_slot_get_pirq, piix3, 4);
+ }
(*pi440fx_state)->piix3 = piix3;
*piix3_devfn = piix3->dev.devfn;
@@ -352,6 +368,14 @@ static PCIDeviceInfo i440fx_info[] = {
.init = i440fx_initfn,
.config_write = i440fx_write_config,
},{
+ .qdev.name = "i440FX-xen",
+ .qdev.desc = "Host bridge",
+ .qdev.size = sizeof(PCII440FXState),
+ .qdev.vmsd = &vmstate_i440fx,
+ .qdev.no_user = 1,
+ .init = i440fx_initfn,
+ .config_write = i440fx_write_config_xen,
+ },{
.qdev.name = "PIIX3",
.qdev.desc = "ISA bridge",
.qdev.size = sizeof(PIIX3State),
diff --git a/hw/xen.h b/hw/xen.h
index 183cbb5..338cf76 100644
--- a/hw/xen.h
+++ b/hw/xen.h
@@ -8,6 +8,8 @@
*/
#include <inttypes.h>
+#include "qemu-common.h"
+
/* xen-machine.c */
enum xen_mode {
XEN_EMULATE = 0, // xen emulation, using xenner (default)
@@ -29,6 +31,10 @@ static inline int xen_enabled(void)
#endif
}
+int xen_pci_slot_get_pirq(PCIDevice *pci_dev, int irq_num);
+void xen_piix3_set_irq(void *opaque, int irq_num, int level);
+void xen_piix_pci_write_config_client(uint32_t address, uint32_t val, int len);
+
int xen_init(int smp_cpus);
#endif /* QEMU_HW_XEN_H */
diff --git a/xen-all.c b/xen-all.c
index 29c8002..8a51873 100644
--- a/xen-all.c
+++ b/xen-all.c
@@ -8,10 +8,41 @@
#include "config.h"
+#include "hw/pci.h"
#include "hw/xen_common.h"
#include "hw/xen_backend.h"
#include "hw/xen_redirect.h"
+/* Xen specific function for piix pci */
+
+int xen_pci_slot_get_pirq(PCIDevice *pci_dev, int irq_num)
+{
+ return irq_num + ((pci_dev->devfn >> 3) << 2);
+}
+
+void xen_piix3_set_irq(void *opaque, int irq_num, int level)
+{
+ xc_hvm_set_pci_intx_level(xen_xc, xen_domid, 0, 0, irq_num >> 2,
+ irq_num & 3, level);
+}
+
+void xen_piix_pci_write_config_client(uint32_t address, uint32_t val, int len)
+{
+ int i;
+
+ /* Scan for updates to PCI link routes (0x60-0x63). */
+ for (i = 0; i < len; i++) {
+ uint8_t v = (val >> (8 * i)) & 0xff;
+ if (v & 0x80) {
+ v = 0;
+ }
+ v &= 0xf;
+ if (((address + i) >= 0x60) && ((address + i) <= 0x63)) {
+ xc_hvm_set_pci_link_route(xen_xc, xen_domid, address + i - 0x60,
v);
+ }
+ }
+}
+
/* Initialise Xen */
int xen_init(int smp_cpus)
diff --git a/xen-stub.c b/xen-stub.c
index 0fa9c51..07e64bc 100644
--- a/xen-stub.c
+++ b/xen-stub.c
@@ -11,6 +11,19 @@
#include "qemu-common.h"
#include "hw/xen.h"
+int xen_pci_slot_get_pirq(PCIDevice *pci_dev, int irq_num)
+{
+ return -1;
+}
+
+void xen_piix3_set_irq(void *opaque, int irq_num, int level)
+{
+}
+
+void xen_piix_pci_write_config_client(uint32_t address, uint32_t val, int len)
+{
+}
+
int xen_init(int smp_cpus)
{
return -ENOSYS;
--
1.7.1
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xensource.com
http://lists.xensource.com/xen-devel
anthony.perard@citrix.com
2011-Jan-25 14:29 UTC
[Xen-devel] [PATCH V9 09/16] xen: add a 8259 Interrupt Controller
From: Anthony PERARD <anthony.perard@citrix.com>
Introduce a 8259 Interrupt Controller for target-xen; every set_irq
call makes a Xen hypercall.
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
---
hw/xen_common.h | 2 ++
hw/xen_machine_fv.c | 5 ++---
xen-all.c | 12 ++++++++++++
3 files changed, 16 insertions(+), 3 deletions(-)
diff --git a/hw/xen_common.h b/hw/xen_common.h
index b98d107..0cc935a 100644
--- a/hw/xen_common.h
+++ b/hw/xen_common.h
@@ -42,4 +42,6 @@ static inline int xc_fd(xc_interface *xen_xc)
}
#endif
+qemu_irq *i8259_xen_init(void);
+
#endif /* QEMU_HW_XEN_COMMON_H */
diff --git a/hw/xen_machine_fv.c b/hw/xen_machine_fv.c
index 2f51625..0a90312 100644
--- a/hw/xen_machine_fv.c
+++ b/hw/xen_machine_fv.c
@@ -37,6 +37,7 @@
#include "xen_common.h"
#include "xen/hvm/hvm_info_table.h"
#include "xen_platform.h"
+#include "xen_common.h"
#define MAX_IDE_BUS 2
@@ -52,7 +53,6 @@ static void xen_init_fv(ram_addr_t ram_size,
PCIBus *pci_bus;
PCII440FXState *i440fx_state;
int piix3_devfn = -1;
- qemu_irq *cpu_irq;
qemu_irq *isa_irq;
qemu_irq *i8259;
qemu_irq *cmos_s3;
@@ -76,8 +76,7 @@ static void xen_init_fv(ram_addr_t ram_size,
env = cpu_init(cpu_model);
env->halted = 1;
- cpu_irq = pc_allocate_cpu_irq();
- i8259 = i8259_init(cpu_irq[0]);
+ i8259 = i8259_xen_init();
isa_irq_state = qemu_mallocz(sizeof (*isa_irq_state));
isa_irq_state->i8259 = i8259;
diff --git a/xen-all.c b/xen-all.c
index 8a51873..205cbc4 100644
--- a/xen-all.c
+++ b/xen-all.c
@@ -43,6 +43,18 @@ void xen_piix_pci_write_config_client(uint32_t address,
uint32_t val, int len)
}
}
+/* i8259 */
+
+static void i8259_set_irq(void *opaque, int irq, int level)
+{
+ xc_hvm_set_isa_irq_level(xen_xc, xen_domid, irq, level);
+}
+
+qemu_irq *i8259_xen_init(void)
+{
+ return qemu_allocate_irqs(i8259_set_irq, NULL, 16);
+}
+
/* Initialise Xen */
int xen_init(int smp_cpus)
--
1.7.1
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xensource.com
http://lists.xensource.com/xen-devel
anthony.perard@citrix.com
2011-Jan-25 14:29 UTC
[Xen-devel] [PATCH V9 10/16] xen: Introduce the Xen mapcache
From: Jun Nakajima <jun.nakajima@intel.com>
On IA32 host or IA32 PAE host, at present, generally, we can''t create
an HVM guest with more than 2G memory, because generally it''s almost
impossible for Qemu to find a large enough and consecutive virtual
address space to map an HVM guest''s whole physical address space.
The attached patch fixes this issue using dynamic mapping based on
little blocks of memory.
Each call to qemu_get_ram_ptr makes a call to qemu_map_cache with the
lock option, so mapcache will not unmap these ram_ptr.
Signed-off-by: Jun Nakajima <jun.nakajima@intel.com>
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
---
Makefile.target | 3 +
configure | 3 +
exec.c | 40 ++++++-
hw/xen.h | 13 +++
xen-all.c | 64 +++++++++++
xen-mapcache-stub.c | 33 ++++++
xen-mapcache.c | 301 +++++++++++++++++++++++++++++++++++++++++++++++++++
xen-mapcache.h | 14 +++
xen-stub.c | 4 +
9 files changed, 471 insertions(+), 4 deletions(-)
create mode 100644 xen-mapcache-stub.c
create mode 100644 xen-mapcache.c
create mode 100644 xen-mapcache.h
diff --git a/Makefile.target b/Makefile.target
index 8126da9..18b3959 100644
--- a/Makefile.target
+++ b/Makefile.target
@@ -207,9 +207,12 @@ QEMU_CFLAGS += $(VNC_JPEG_CFLAGS)
QEMU_CFLAGS += $(VNC_PNG_CFLAGS)
# xen support
+CONFIG_NO_XEN_MAPCACHE = $(if $(subst n,,$(CONFIG_XEN_MAPCACHE)),n,y)
obj-$(CONFIG_XEN) += xen_interfaces.o
obj-$(CONFIG_XEN) += xen-all.o
obj-$(CONFIG_NO_XEN) += xen-stub.o
+obj-$(CONFIG_XEN_MAPCACHE) += xen-mapcache.o
+obj-$(CONFIG_NO_XEN_MAPCACHE) += xen-mapcache-stub.o
# xen backend driver support
obj-$(CONFIG_XEN) += xen_backend.o xen_devconfig.o
diff --git a/configure b/configure
index fde9bad..c9a13e1 100755
--- a/configure
+++ b/configure
@@ -3069,6 +3069,9 @@ case "$target_arch2" in
echo "CONFIG_XEN=y" >> $config_target_mak
echo "LIBS+=$xen_libs" >> $config_target_mak
echo "CONFIG_XEN_CTRL_INTERFACE_VERSION=$xen_ctrl_version"
>> $config_target_mak
+ if test "$cpu" = "i386" -o "$cpu" =
"x86_64"; then
+ echo "CONFIG_XEN_MAPCACHE=y" >> $config_target_mak
+ fi
fi
esac
case "$target_arch2" in
diff --git a/exec.c b/exec.c
index e950df2..3b137dc 100644
--- a/exec.c
+++ b/exec.c
@@ -32,6 +32,7 @@
#include "hw/qdev.h"
#include "osdep.h"
#include "kvm.h"
+#include "hw/xen.h"
#include "qemu-timer.h"
#if defined(CONFIG_USER_ONLY)
#include <qemu.h>
@@ -51,6 +52,8 @@
#include <libutil.h>
#endif
#endif
+#else /* !CONFIG_USER_ONLY */
+#include "xen-mapcache.h"
#endif
//#define DEBUG_TB_INVALIDATE
@@ -2835,6 +2838,7 @@ ram_addr_t qemu_ram_alloc_from_ptr(DeviceState *dev, const
char *name,
}
}
+ new_block->offset = find_ram_offset(size);
if (host) {
new_block->host = host;
} else {
@@ -2856,13 +2860,15 @@ ram_addr_t qemu_ram_alloc_from_ptr(DeviceState *dev,
const char *name,
PROT_EXEC|PROT_READ|PROT_WRITE,
MAP_SHARED | MAP_ANONYMOUS, -1, 0);
#else
- new_block->host = qemu_vmalloc(size);
+ if (xen_mapcache_enabled()) {
+ xen_ram_alloc(new_block->offset, size);
+ } else {
+ new_block->host = qemu_vmalloc(size);
+ }
#endif
qemu_madvise(new_block->host, size, QEMU_MADV_MERGEABLE);
}
}
-
- new_block->offset = find_ram_offset(size);
new_block->length = size;
QLIST_INSERT_HEAD(&ram_list.blocks, new_block, next);
@@ -2903,7 +2909,11 @@ void qemu_ram_free(ram_addr_t addr)
#if defined(TARGET_S390X) && defined(CONFIG_KVM)
munmap(block->host, block->length);
#else
- qemu_vfree(block->host);
+ if (xen_mapcache_enabled()) {
+ qemu_invalidate_entry(block->host);
+ } else {
+ qemu_vfree(block->host);
+ }
#endif
}
qemu_free(block);
@@ -2929,6 +2939,15 @@ void *qemu_get_ram_ptr(ram_addr_t addr)
if (addr - block->offset < block->length) {
QLIST_REMOVE(block, next);
QLIST_INSERT_HEAD(&ram_list.blocks, block, next);
+ if (xen_mapcache_enabled()) {
+ /* We need to check if the requested address is in the RAM
+ * because we don''t want to map the entire memory in
QEMU.
+ */
+ if (block->offset == 0) {
+ return qemu_map_cache(addr, 0, 1);
+ }
+ block->host = qemu_map_cache(block->offset,
block->length, 1);
+ }
return block->host + (addr - block->offset);
}
}
@@ -2964,11 +2983,21 @@ int qemu_ram_addr_from_host(void *ptr, ram_addr_t
*ram_addr)
uint8_t *host = ptr;
QLIST_FOREACH(block, &ram_list.blocks, next) {
+ /* This case append when the block is not mapped. */
+ if (block->host == NULL) {
+ continue;
+ }
if (host - block->host < block->length) {
*ram_addr = block->offset + (host - block->host);
return 0;
}
}
+
+ if (xen_mapcache_enabled()) {
+ *ram_addr = qemu_ram_addr_from_mapcache(ptr);
+ return 0;
+ }
+
return -1;
}
@@ -3879,6 +3908,9 @@ void cpu_physical_memory_unmap(void *buffer,
target_phys_addr_t len,
if (is_write) {
cpu_physical_memory_write(bounce.addr, bounce.buffer, access_len);
}
+ if (xen_enabled()) {
+ qemu_invalidate_entry(buffer);
+ }
qemu_vfree(bounce.buffer);
bounce.buffer = NULL;
cpu_notify_map_clients();
diff --git a/hw/xen.h b/hw/xen.h
index 338cf76..dd3fb68 100644
--- a/hw/xen.h
+++ b/hw/xen.h
@@ -31,10 +31,23 @@ static inline int xen_enabled(void)
#endif
}
+static inline int xen_mapcache_enabled(void)
+{
+#ifdef CONFIG_XEN_MAPCACHE
+ return xen_enabled();
+#else
+ return 0;
+#endif
+}
+
int xen_pci_slot_get_pirq(PCIDevice *pci_dev, int irq_num);
void xen_piix3_set_irq(void *opaque, int irq_num, int level);
void xen_piix_pci_write_config_client(uint32_t address, uint32_t val, int len);
int xen_init(int smp_cpus);
+#if defined(NEED_CPU_H) && !defined(CONFIG_USER_ONLY)
+void xen_ram_alloc(ram_addr_t ram_addr, ram_addr_t size);
+#endif
+
#endif /* QEMU_HW_XEN_H */
diff --git a/xen-all.c b/xen-all.c
index 205cbc4..2b9e71c 100644
--- a/xen-all.c
+++ b/xen-all.c
@@ -13,6 +13,8 @@
#include "hw/xen_backend.h"
#include "hw/xen_redirect.h"
+#include "xen-mapcache.h"
+
/* Xen specific function for piix pci */
int xen_pci_slot_get_pirq(PCIDevice *pci_dev, int irq_num)
@@ -55,6 +57,64 @@ qemu_irq *i8259_xen_init(void)
return qemu_allocate_irqs(i8259_set_irq, NULL, 16);
}
+
+/* Memory Ops */
+
+static void xen_ram_init(ram_addr_t ram_size)
+{
+ RAMBlock *new_block;
+ ram_addr_t below_4g_mem_size, above_4g_mem_size = 0;
+
+ new_block = qemu_mallocz(sizeof (*new_block));
+ pstrcpy(new_block->idstr, sizeof (new_block->idstr),
"xen.ram");
+ new_block->host = NULL;
+ new_block->offset = 0;
+ new_block->length = ram_size;
+
+ QLIST_INSERT_HEAD(&ram_list.blocks, new_block, next);
+
+ ram_list.phys_dirty = qemu_realloc(ram_list.phys_dirty,
+ new_block->length >>
TARGET_PAGE_BITS);
+ memset(ram_list.phys_dirty + (new_block->offset >>
TARGET_PAGE_BITS),
+ 0xff, new_block->length >> TARGET_PAGE_BITS);
+
+ if (ram_size >= 0xe0000000 ) {
+ above_4g_mem_size = ram_size - 0xe0000000;
+ below_4g_mem_size = 0xe0000000;
+ } else {
+ below_4g_mem_size = ram_size;
+ }
+
+ cpu_register_physical_memory(0, below_4g_mem_size, new_block->offset);
+#if TARGET_PHYS_ADDR_BITS > 32
+ if (above_4g_mem_size > 0) {
+ cpu_register_physical_memory(0x100000000ULL, above_4g_mem_size,
+ new_block->offset + below_4g_mem_size);
+ }
+#endif
+}
+
+void xen_ram_alloc(ram_addr_t ram_addr, ram_addr_t size)
+{
+ unsigned long nr_pfn;
+ xen_pfn_t *pfn_list;
+ int i;
+
+ nr_pfn = size >> TARGET_PAGE_BITS;
+ pfn_list = qemu_malloc(sizeof (*pfn_list) * nr_pfn);
+
+ for (i = 0; i < nr_pfn; i++) {
+ pfn_list[i] = (ram_addr >> TARGET_PAGE_BITS) + i;
+ }
+
+ if (xc_domain_populate_physmap_exact(xen_xc, xen_domid, nr_pfn, 0, 0,
pfn_list)) {
+ hw_error("xen: failed to populate ram at %lx", ram_addr);
+ }
+
+ qemu_free(pfn_list);
+}
+
+
/* Initialise Xen */
int xen_init(int smp_cpus)
@@ -68,5 +128,9 @@ int xen_init(int smp_cpus)
return -1;
}
+ /* Init RAM management */
+ qemu_map_cache_init();
+ xen_ram_init(ram_size);
+
return 0;
}
diff --git a/xen-mapcache-stub.c b/xen-mapcache-stub.c
new file mode 100644
index 0000000..69ce2e7
--- /dev/null
+++ b/xen-mapcache-stub.c
@@ -0,0 +1,33 @@
+#include "config.h"
+
+#include "exec-all.h"
+#include "qemu-common.h"
+#include "cpu-common.h"
+#include "xen-mapcache.h"
+
+int qemu_map_cache_init(void)
+{
+ return 0;
+}
+
+uint8_t *qemu_map_cache(target_phys_addr_t phys_addr, target_phys_addr_t size,
uint8_t lock)
+{
+ return qemu_get_ram_ptr(phys_addr);
+}
+
+void qemu_map_cache_unlock(void *buffer)
+{
+}
+
+ram_addr_t qemu_ram_addr_from_mapcache(void *ptr)
+{
+ return -1;
+}
+
+void qemu_invalidate_map_cache(void)
+{
+}
+
+void qemu_invalidate_entry(uint8_t *buffer)
+{
+}
diff --git a/xen-mapcache.c b/xen-mapcache.c
new file mode 100644
index 0000000..3e1cca9
--- /dev/null
+++ b/xen-mapcache.c
@@ -0,0 +1,301 @@
+#include "config.h"
+
+#include "hw/xen_backend.h"
+#include "blockdev.h"
+
+#include <xen/hvm/params.h>
+#include <sys/mman.h>
+
+#include "xen-mapcache.h"
+
+
+//#define MAPCACHE_DEBUG
+
+#ifdef MAPCACHE_DEBUG
+# define DPRINTF(fmt, ...) do { \
+ fprintf(stderr, "xen_mapcache: " fmt, ## __VA_ARGS__); \
+} while (0)
+#else
+# define DPRINTF(fmt, ...) do { } while (0)
+#endif
+
+#if defined(__i386__)
+# define MAX_MCACHE_SIZE 0x40000000 /* 1GB max for x86 */
+# define MCACHE_BUCKET_SHIFT 16
+#elif defined(__x86_64__)
+# define MAX_MCACHE_SIZE 0x1000000000 /* 64GB max for x86_64 */
+# define MCACHE_BUCKET_SHIFT 20
+#endif
+#define MCACHE_BUCKET_SIZE (1UL << MCACHE_BUCKET_SHIFT)
+
+#define BITS_PER_LONG (sizeof(long) * 8)
+#define BITS_TO_LONGS(bits) (((bits) + BITS_PER_LONG - 1) / BITS_PER_LONG)
+#define DECLARE_BITMAP(name, bits) unsigned long name[BITS_TO_LONGS(bits)]
+#define test_bit(bit, map) \
+ (!!((map)[(bit) / BITS_PER_LONG] & (1UL << ((bit) %
BITS_PER_LONG))))
+
+typedef struct MapCacheEntry {
+ target_phys_addr_t paddr_index;
+ uint8_t *vaddr_base;
+ DECLARE_BITMAP(valid_mapping, MCACHE_BUCKET_SIZE >> XC_PAGE_SHIFT);
+ uint8_t lock;
+ struct MapCacheEntry *next;
+} MapCacheEntry;
+
+typedef struct MapCacheRev {
+ uint8_t *vaddr_req;
+ target_phys_addr_t paddr_index;
+ QTAILQ_ENTRY(MapCacheRev) next;
+} MapCacheRev;
+
+typedef struct MapCache {
+ MapCacheEntry *entry;
+ unsigned long nr_buckets;
+ QTAILQ_HEAD(map_cache_head, MapCacheRev) locked_entries;
+
+ /* For most cases (>99.9%), the page address is the same. */
+ target_phys_addr_t last_address_index;
+ uint8_t *last_address_vaddr;
+} MapCache;
+
+static MapCache *mapcache;
+
+
+int qemu_map_cache_init(void)
+{
+ unsigned long size;
+
+ mapcache = qemu_mallocz(sizeof (MapCache));
+
+ QTAILQ_INIT(&mapcache->locked_entries);
+ mapcache->last_address_index = -1;
+
+ mapcache->nr_buckets = (((MAX_MCACHE_SIZE >> XC_PAGE_SHIFT) +
+ (1UL << (MCACHE_BUCKET_SHIFT - XC_PAGE_SHIFT)) - 1)
>>
+ (MCACHE_BUCKET_SHIFT - XC_PAGE_SHIFT));
+
+ /*
+ * Use mmap() directly: lets us allocate a big hash table with no up-front
+ * cost in storage space. The OS will allocate memory only for the buckets
+ * that we actually use. All others will contain all zeroes.
+ */
+ size = mapcache->nr_buckets * sizeof (MapCacheEntry);
+ size = (size + XC_PAGE_SIZE - 1) & ~(XC_PAGE_SIZE - 1);
+ DPRINTF("qemu_map_cache_init, nr_buckets = %lx size %lu\n",
mapcache->nr_buckets, size);
+ mapcache->entry = mmap(NULL, size, PROT_READ|PROT_WRITE,
+ MAP_SHARED|MAP_ANON, -1, 0);
+ if (mapcache->entry == MAP_FAILED) {
+ return -1;
+ }
+
+ return 0;
+}
+
+static void qemu_remap_bucket(MapCacheEntry *entry,
+ target_phys_addr_t size,
+ target_phys_addr_t address_index)
+{
+ uint8_t *vaddr_base;
+ xen_pfn_t *pfns;
+ int *err;
+ unsigned int i, j;
+ target_phys_addr_t nb_pfn = size >> XC_PAGE_SHIFT;
+
+ pfns = qemu_mallocz(nb_pfn * sizeof (xen_pfn_t));
+ err = qemu_mallocz(nb_pfn * sizeof (int));
+
+ if (entry->vaddr_base != NULL) {
+ if (munmap(entry->vaddr_base, size) != 0) {
+ perror("unmap fails");
+ exit(-1);
+ }
+ }
+
+ for (i = 0; i < nb_pfn; i++) {
+ pfns[i] = (address_index << (MCACHE_BUCKET_SHIFT-XC_PAGE_SHIFT))
+ i;
+ }
+
+ vaddr_base = xc_map_foreign_bulk(xen_xc, xen_domid, PROT_READ|PROT_WRITE,
+ pfns, err, nb_pfn);
+ if (vaddr_base == NULL) {
+ perror("xc_map_foreign_bulk");
+ exit(-1);
+ }
+
+ entry->vaddr_base = vaddr_base;
+ entry->paddr_index = address_index;
+
+ for (i = 0; i < nb_pfn; i += BITS_PER_LONG) {
+ unsigned long word = 0;
+ if ((i + BITS_PER_LONG) > nb_pfn) {
+ j = nb_pfn % BITS_PER_LONG;
+ } else {
+ j = BITS_PER_LONG;
+ }
+ while (j > 0) {
+ word = (word << 1) | !err[i + --j];
+ }
+ entry->valid_mapping[i / BITS_PER_LONG] = word;
+ }
+
+ qemu_free(pfns);
+ qemu_free(err);
+}
+
+uint8_t *qemu_map_cache(target_phys_addr_t phys_addr, target_phys_addr_t size,
uint8_t lock)
+{
+ MapCacheEntry *entry, *pentry = NULL;
+ target_phys_addr_t address_index = phys_addr >> MCACHE_BUCKET_SHIFT;
+ target_phys_addr_t address_offset = phys_addr & (MCACHE_BUCKET_SIZE -
1);
+
+ if (address_index == mapcache->last_address_index && !lock) {
+ return mapcache->last_address_vaddr + address_offset;
+ }
+
+ entry = &mapcache->entry[address_index % mapcache->nr_buckets];
+
+ while (entry && entry->lock && entry->paddr_index !=
address_index && entry->vaddr_base) {
+ pentry = entry;
+ entry = entry->next;
+ }
+ if (!entry) {
+ entry = qemu_mallocz(sizeof (MapCacheEntry));
+ pentry->next = entry;
+ qemu_remap_bucket(entry, size ? : MCACHE_BUCKET_SIZE, address_index);
+ } else if (!entry->lock) {
+ if (!entry->vaddr_base || entry->paddr_index != address_index ||
+ !test_bit(address_offset >> XC_PAGE_SHIFT,
entry->valid_mapping)) {
+ qemu_remap_bucket(entry, size ? : MCACHE_BUCKET_SIZE,
address_index);
+ }
+ }
+
+ if (!test_bit(address_offset >> XC_PAGE_SHIFT,
entry->valid_mapping)) {
+ mapcache->last_address_index = -1;
+ return NULL;
+ }
+
+ mapcache->last_address_index = address_index;
+ mapcache->last_address_vaddr = entry->vaddr_base;
+ if (lock) {
+ MapCacheRev *reventry = qemu_mallocz(sizeof(MapCacheRev));
+ entry->lock++;
+ reventry->vaddr_req = mapcache->last_address_vaddr +
address_offset;
+ reventry->paddr_index = mapcache->last_address_index;
+ QTAILQ_INSERT_TAIL(&mapcache->locked_entries, reventry, next);
+ }
+
+ return mapcache->last_address_vaddr + address_offset;
+}
+
+ram_addr_t qemu_ram_addr_from_mapcache(void *ptr)
+{
+ MapCacheRev *reventry;
+ target_phys_addr_t paddr_index;
+ int found = 0;
+
+ QTAILQ_FOREACH(reventry, &mapcache->locked_entries, next) {
+ if (reventry->vaddr_req == ptr) {
+ paddr_index = reventry->paddr_index;
+ found = 1;
+ break;
+ }
+ }
+ if (!found) {
+ fprintf(stderr, "qemu_ram_addr_from_mapcache, could not find
%p\n", ptr);
+ QTAILQ_FOREACH(reventry, &mapcache->locked_entries, next) {
+ DPRINTF(" %lx -> %p is present\n",
reventry->paddr_index,
+ reventry->vaddr_req);
+ }
+ abort();
+ return 0;
+ }
+
+ return paddr_index << MCACHE_BUCKET_SHIFT;
+}
+
+void qemu_invalidate_entry(uint8_t *buffer)
+{
+ MapCacheEntry *entry = NULL, *pentry = NULL;
+ MapCacheRev *reventry;
+ target_phys_addr_t paddr_index;
+ int found = 0;
+
+ if (mapcache->last_address_vaddr == buffer) {
+ mapcache->last_address_index = -1;
+ }
+
+ QTAILQ_FOREACH(reventry, &mapcache->locked_entries, next) {
+ if (reventry->vaddr_req == buffer) {
+ paddr_index = reventry->paddr_index;
+ found = 1;
+ break;
+ }
+ }
+ if (!found) {
+ DPRINTF("qemu_invalidate_entry, could not find %p\n",
buffer);
+ QTAILQ_FOREACH(reventry, &mapcache->locked_entries, next) {
+ DPRINTF(" %lx -> %p is present\n",
reventry->paddr_index, reventry->vaddr_req);
+ }
+ return;
+ }
+ QTAILQ_REMOVE(&mapcache->locked_entries, reventry, next);
+ qemu_free(reventry);
+
+ entry = &mapcache->entry[paddr_index % mapcache->nr_buckets];
+ while (entry && entry->paddr_index != paddr_index) {
+ pentry = entry;
+ entry = entry->next;
+ }
+ if (!entry) {
+ DPRINTF("Trying to unmap address %p that is not in the
mapcache!\n", buffer);
+ return;
+ }
+ entry->lock--;
+ if (entry->lock > 0 || pentry == NULL) {
+ return;
+ }
+
+ pentry->next = entry->next;
+ if (munmap(entry->vaddr_base, MCACHE_BUCKET_SIZE) != 0) {
+ perror("unmap fails");
+ exit(-1);
+ }
+ qemu_free(entry);
+}
+
+void qemu_invalidate_map_cache(void)
+{
+ unsigned long i;
+ MapCacheRev *reventry;
+
+ qemu_aio_flush();
+
+ QTAILQ_FOREACH(reventry, &mapcache->locked_entries, next) {
+ DPRINTF("There should be no locked mappings at this time, "
+ "but %lx -> %p is present\n",
+ reventry->paddr_index, reventry->vaddr_req);
+ }
+
+ mapcache_lock();
+
+ for (i = 0; i < mapcache->nr_buckets; i++) {
+ MapCacheEntry *entry = &mapcache->entry[i];
+
+ if (entry->vaddr_base == NULL) {
+ continue;
+ }
+
+ if (munmap(entry->vaddr_base, MCACHE_BUCKET_SIZE) != 0) {
+ perror("unmap fails");
+ exit(-1);
+ }
+
+ entry->paddr_index = 0;
+ entry->vaddr_base = NULL;
+ }
+
+ mapcache->last_address_index = -1;
+ mapcache->last_address_vaddr = NULL;
+
+ mapcache_unlock();
+}
diff --git a/xen-mapcache.h b/xen-mapcache.h
new file mode 100644
index 0000000..86a017b
--- /dev/null
+++ b/xen-mapcache.h
@@ -0,0 +1,14 @@
+#ifndef XEN_MAPCACHE_H
+#define XEN_MAPCACHE_H
+
+int qemu_map_cache_init(void);
+uint8_t *qemu_map_cache(target_phys_addr_t phys_addr, target_phys_addr_t size,
uint8_t lock);
+void qemu_map_cache_unlock(void *phys_addr);
+ram_addr_t qemu_ram_addr_from_mapcache(void *ptr);
+void qemu_invalidate_entry(uint8_t *buffer);
+void qemu_invalidate_map_cache(void);
+
+#define mapcache_lock() ((void)0)
+#define mapcache_unlock() ((void)0)
+
+#endif /* !XEN_MAPCACHE_H */
diff --git a/xen-stub.c b/xen-stub.c
index 07e64bc..c9f477d 100644
--- a/xen-stub.c
+++ b/xen-stub.c
@@ -24,6 +24,10 @@ void xen_piix_pci_write_config_client(uint32_t address,
uint32_t val, int len)
{
}
+void xen_ram_alloc(ram_addr_t ram_addr, ram_addr_t size)
+{
+}
+
int xen_init(int smp_cpus)
{
return -ENOSYS;
--
1.7.1
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xensource.com
http://lists.xensource.com/xen-devel
anthony.perard@citrix.com
2011-Jan-25 14:29 UTC
[Xen-devel] [PATCH V9 11/16] configure: Always use 64bits target physical addresses with xen enabled.
From: Anthony PERARD <anthony.perard@citrix.com>
With MapCache, we can handle a 64b target, even with a 32b host/qemu.
So, we need to have target_phys_addr_t to 64bits.
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
---
configure | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/configure b/configure
index c9a13e1..76177d8 100755
--- a/configure
+++ b/configure
@@ -3066,6 +3066,7 @@ echo "TARGET_ABI_DIR=$TARGET_ABI_DIR" >>
$config_target_mak
case "$target_arch2" in
i386|x86_64)
if test "$xen" = "yes" -a "$target_softmmu" =
"yes" ; then
+ target_phys_bits=64
echo "CONFIG_XEN=y" >> $config_target_mak
echo "LIBS+=$xen_libs" >> $config_target_mak
echo "CONFIG_XEN_CTRL_INTERFACE_VERSION=$xen_ctrl_version"
>> $config_target_mak
--
1.7.1
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xensource.com
http://lists.xensource.com/xen-devel
anthony.perard@citrix.com
2011-Jan-25 14:29 UTC
[Xen-devel] [PATCH V9 12/16] Introduce qemu_ram_ptr_unlock.
From: Anthony PERARD <anthony.perard@citrix.com>
This function allows to unlock a ram_ptr give by qemu_get_ram_ptr. After
a call to qemu_ram_ptr_unlock, the pointer may be unmap from QEMU when
used with Xen.
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
---
cpu-common.h | 1 +
exec.c | 10 ++++++++++
xen-mapcache.c | 34 ++++++++++++++++++++++++++++++++++
3 files changed, 45 insertions(+), 0 deletions(-)
diff --git a/cpu-common.h b/cpu-common.h
index 6d4a898..8fa6d80 100644
--- a/cpu-common.h
+++ b/cpu-common.h
@@ -55,6 +55,7 @@ void *qemu_get_ram_ptr(ram_addr_t addr);
/* Same but slower, to use for migration, where the order of
* RAMBlocks must not change. */
void *qemu_safe_ram_ptr(ram_addr_t addr);
+void qemu_ram_ptr_unlock(void *addr);
/* This should not be used by devices. */
int qemu_ram_addr_from_host(void *ptr, ram_addr_t *ram_addr);
ram_addr_t qemu_ram_addr_from_host_nofail(void *ptr);
diff --git a/exec.c b/exec.c
index 3b137dc..8acf2a9 100644
--- a/exec.c
+++ b/exec.c
@@ -2977,6 +2977,13 @@ void *qemu_safe_ram_ptr(ram_addr_t addr)
return NULL;
}
+void qemu_ram_ptr_unlock(void *addr)
+{
+ if (xen_mapcache_enabled()) {
+ qemu_map_cache_unlock(addr);
+ }
+}
+
int qemu_ram_addr_from_host(void *ptr, ram_addr_t *ram_addr)
{
RAMBlock *block;
@@ -3692,6 +3699,7 @@ void cpu_physical_memory_rw(target_phys_addr_t addr,
uint8_t *buf,
cpu_physical_memory_set_dirty_flags(
addr1, (0xff & ~CODE_DIRTY_FLAG));
}
+ qemu_ram_ptr_unlock(ptr);
}
} else {
if ((pd & ~TARGET_PAGE_MASK) > IO_MEM_ROM &&
@@ -3722,6 +3730,7 @@ void cpu_physical_memory_rw(target_phys_addr_t addr,
uint8_t *buf,
ptr = qemu_get_ram_ptr(pd & TARGET_PAGE_MASK) +
(addr & ~TARGET_PAGE_MASK);
memcpy(buf, ptr, l);
+ qemu_ram_ptr_unlock(ptr);
}
}
len -= l;
@@ -3762,6 +3771,7 @@ void cpu_physical_memory_write_rom(target_phys_addr_t
addr,
/* ROM/RAM case */
ptr = qemu_get_ram_ptr(addr1);
memcpy(ptr, buf, l);
+ qemu_ram_ptr_unlock(ptr);
}
len -= l;
buf += l;
diff --git a/xen-mapcache.c b/xen-mapcache.c
index 3e1cca9..23a23f9 100644
--- a/xen-mapcache.c
+++ b/xen-mapcache.c
@@ -187,6 +187,40 @@ uint8_t *qemu_map_cache(target_phys_addr_t phys_addr,
target_phys_addr_t size, u
return mapcache->last_address_vaddr + address_offset;
}
+void qemu_map_cache_unlock(void *buffer)
+{
+ MapCacheEntry *entry = NULL, *pentry = NULL;
+ MapCacheRev *reventry;
+ target_phys_addr_t paddr_index;
+ int found = 0;
+
+ QTAILQ_FOREACH(reventry, &mapcache->locked_entries, next) {
+ if (reventry->vaddr_req == buffer) {
+ paddr_index = reventry->paddr_index;
+ found = 1;
+ break;
+ }
+ }
+ if (!found) {
+ return;
+ }
+ QTAILQ_REMOVE(&mapcache->locked_entries, reventry, next);
+ qemu_free(reventry);
+
+ entry = &mapcache->entry[paddr_index % mapcache->nr_buckets];
+ while (entry && entry->paddr_index != paddr_index) {
+ pentry = entry;
+ entry = entry->next;
+ }
+ if (!entry) {
+ return;
+ }
+ entry->lock--;
+ if (entry->lock > 0) {
+ entry->lock--;
+ }
+}
+
ram_addr_t qemu_ram_addr_from_mapcache(void *ptr)
{
MapCacheRev *reventry;
--
1.7.1
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xensource.com
http://lists.xensource.com/xen-devel
anthony.perard@citrix.com
2011-Jan-25 14:29 UTC
[Xen-devel] [PATCH V9 13/16] vl.c: Introduce getter for shutdown_requested and reset_requested.
From: Anthony PERARD <anthony.perard@citrix.com>
Introduce two functions qemu_shutdown_requested_get and
qemu_reset_requested_get to get the value of shutdown/reset_requested
without reset it.
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
---
sysemu.h | 2 ++
vl.c | 10 ++++++++++
2 files changed, 12 insertions(+), 0 deletions(-)
diff --git a/sysemu.h b/sysemu.h
index 23ae17e..ada9692 100644
--- a/sysemu.h
+++ b/sysemu.h
@@ -51,6 +51,8 @@ void cpu_disable_ticks(void);
void qemu_system_reset_request(void);
void qemu_system_shutdown_request(void);
void qemu_system_powerdown_request(void);
+int qemu_shutdown_requested_get(void);
+int qemu_reset_requested_get(void);
int qemu_shutdown_requested(void);
int qemu_reset_requested(void);
int qemu_powerdown_requested(void);
diff --git a/vl.c b/vl.c
index 38fa281..14e5bd6 100644
--- a/vl.c
+++ b/vl.c
@@ -1204,6 +1204,16 @@ static int powerdown_requested;
int debug_requested;
int vmstop_requested;
+int qemu_shutdown_requested_get(void)
+{
+ return shutdown_requested;
+}
+
+int qemu_reset_requested_get(void)
+{
+ return reset_requested;
+}
+
int qemu_shutdown_requested(void)
{
int r = shutdown_requested;
--
1.7.1
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xensource.com
http://lists.xensource.com/xen-devel
anthony.perard@citrix.com
2011-Jan-25 14:29 UTC
[Xen-devel] [PATCH V9 14/16] xen: Initialize event channels and io rings
From: Arun Sharma <arun.sharma@intel.com>
Open and bind event channels; map ioreq and buffered ioreq rings.
Signed-off-by: Arun Sharma <arun.sharma@intel.com>
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
---
hw/xen_common.h | 3 +
xen-all.c | 411 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 414 insertions(+), 0 deletions(-)
diff --git a/hw/xen_common.h b/hw/xen_common.h
index 0cc935a..a85b1c4 100644
--- a/hw/xen_common.h
+++ b/hw/xen_common.h
@@ -26,6 +26,7 @@
/* Xen unstable */
#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 410
typedef int qemu_xc_interface;
+# define XC_INTERFACE_FMT "%i"
# define XC_HANDLER_INITIAL_VALUE -1
static inline int xc_fd(int xen_xc)
{
@@ -33,6 +34,7 @@ static inline int xc_fd(int xen_xc)
}
#else
typedef xc_interface *qemu_xc_interface;
+# define XC_INTERFACE_FMT "%p"
# define XC_HANDLER_INITIAL_VALUE NULL
/* FIXME The fd of xen_xc is now xen_xc->fd */
/* fd is the first field, so this works */
@@ -43,5 +45,6 @@ static inline int xc_fd(xc_interface *xen_xc)
#endif
qemu_irq *i8259_xen_init(void);
+void destroy_hvm_domain(void);
#endif /* QEMU_HW_XEN_COMMON_H */
diff --git a/xen-all.c b/xen-all.c
index 2b9e71c..a0248ee 100644
--- a/xen-all.c
+++ b/xen-all.c
@@ -8,6 +8,8 @@
#include "config.h"
+#include <sys/mman.h>
+
#include "hw/pci.h"
#include "hw/xen_common.h"
#include "hw/xen_backend.h"
@@ -15,6 +17,50 @@
#include "xen-mapcache.h"
+#include <xen/hvm/ioreq.h>
+#include <xen/hvm/params.h>
+
+//#define DEBUG_XEN
+
+#ifdef DEBUG_XEN
+#define DPRINTF(fmt, ...) \
+ do { fprintf(stderr, "xen: " fmt, ## __VA_ARGS__); } while (0)
+#else
+#define DPRINTF(fmt, ...) \
+ do { } while (0)
+#endif
+
+/* Compatibility with older version */
+#if __XEN_LATEST_INTERFACE_VERSION__ < 0x0003020a
+# define xen_vcpu_eport(shared_page, i) \
+ (shared_page->vcpu_iodata[i].vp_eport)
+# define xen_vcpu_ioreq(shared_page, vcpu) \
+ (shared_page->vcpu_iodata[vcpu].vp_ioreq)
+# define FMT_ioreq_size PRIx64
+#else
+# define xen_vcpu_eport(shared_page, i) \
+ (shared_page->vcpu_ioreq[i].vp_eport)
+# define xen_vcpu_ioreq(shared_page, vcpu) \
+ (shared_page->vcpu_ioreq[vcpu])
+# define FMT_ioreq_size "u"
+#endif
+
+#define BUFFER_IO_MAX_DELAY 100
+
+typedef struct XenIOState {
+ shared_iopage_t *shared_page;
+ buffered_iopage_t *buffered_io_page;
+ QEMUTimer *buffered_io_timer;
+ /* the evtchn port for polling the notification, */
+ evtchn_port_t *ioreq_local_port;
+ /* the evtchn fd for polling */
+ qemu_xc_evtchn xce_handle;
+ /* which vcpu we are serving */
+ int send_vcpu;
+
+ Notifier exit;
+} XenIOState;
+
/* Xen specific function for piix pci */
int xen_pci_slot_get_pirq(PCIDevice *pci_dev, int irq_num)
@@ -115,10 +161,312 @@ void xen_ram_alloc(ram_addr_t ram_addr, ram_addr_t size)
}
+/* VCPU Operations, MMIO, IO ring ... */
+
+/* get the ioreq packets from share mem */
+static ioreq_t *cpu_get_ioreq_from_shared_memory(XenIOState *state, int vcpu)
+{
+ ioreq_t *req = xen_vcpu_ioreq(&state->shared_page, vcpu);
+
+ if (req->state != STATE_IOREQ_READY) {
+ DPRINTF("I/O request not ready: "
+ "%x, ptr: %x, port: %"PRIx64", "
+ "data: %"PRIx64", count: %" FMT_ioreq_size
", size: %" FMT_ioreq_size "\n",
+ req->state, req->data_is_ptr, req->addr,
+ req->data, req->count, req->size);
+ return NULL;
+ }
+
+ xen_rmb(); /* see IOREQ_READY /then/ read contents of ioreq */
+
+ req->state = STATE_IOREQ_INPROCESS;
+ return req;
+}
+
+/* use poll to get the port notification */
+/* ioreq_vec--out,the */
+/* retval--the number of ioreq packet */
+static ioreq_t *cpu_get_ioreq(XenIOState *state)
+{
+ int i;
+ evtchn_port_t port;
+
+ port = xc_evtchn_pending(state->xce_handle);
+ if (port != -1) {
+ for (i = 0; i < smp_cpus; i++) {
+ if (state->ioreq_local_port[i] == port) {
+ break;
+ }
+ }
+
+ if (i == smp_cpus) {
+ hw_error("Fatal error while trying to get io event!\n");
+ }
+
+ /* unmask the wanted port again */
+ xc_evtchn_unmask(state->xce_handle, port);
+
+ /* get the io packet from shared memory */
+ state->send_vcpu = i;
+ return cpu_get_ioreq_from_shared_memory(state, i);
+ }
+
+ /* read error or read nothing */
+ return NULL;
+}
+
+static uint32_t do_inp(pio_addr_t addr, unsigned long size)
+{
+ switch (size) {
+ case 1:
+ return cpu_inb(addr);
+ case 2:
+ return cpu_inw(addr);
+ case 4:
+ return cpu_inl(addr);
+ default:
+ hw_error("inp: bad size: %04"FMT_pioaddr" %lx",
addr, size);
+ }
+}
+
+static void do_outp(pio_addr_t addr,
+ unsigned long size, uint32_t val)
+{
+ switch (size) {
+ case 1:
+ return cpu_outb(addr, val);
+ case 2:
+ return cpu_outw(addr, val);
+ case 4:
+ return cpu_outl(addr, val);
+ default:
+ hw_error("outp: bad size: %04"FMT_pioaddr"
%lx", addr, size);
+ }
+}
+
+static void cpu_ioreq_pio(ioreq_t *req)
+{
+ int i, sign;
+
+ sign = req->df ? -1 : 1;
+
+ if (req->dir == IOREQ_READ) {
+ if (!req->data_is_ptr) {
+ req->data = do_inp(req->addr, req->size);
+ } else {
+ uint32_t tmp;
+
+ for (i = 0; i < req->count; i++) {
+ tmp = do_inp(req->addr, req->size);
+ cpu_physical_memory_write(req->data + (sign * i *
req->size),
+ (uint8_t *) &tmp, req->size);
+ }
+ }
+ } else if (req->dir == IOREQ_WRITE) {
+ if (!req->data_is_ptr) {
+ do_outp(req->addr, req->size, req->data);
+ } else {
+ for (i = 0; i < req->count; i++) {
+ uint32_t tmp = 0;
+
+ cpu_physical_memory_read(req->data + (sign * i *
req->size),
+ (uint8_t*) &tmp, req->size);
+ do_outp(req->addr, req->size, tmp);
+ }
+ }
+ }
+}
+
+static void cpu_ioreq_move(ioreq_t *req)
+{
+ int i, sign;
+
+ sign = req->df ? -1 : 1;
+
+ if (!req->data_is_ptr) {
+ if (req->dir == IOREQ_READ) {
+ for (i = 0; i < req->count; i++) {
+ cpu_physical_memory_read(req->addr + (sign * i *
req->size),
+ (uint8_t *) &req->data, req->size);
+ }
+ } else if (req->dir == IOREQ_WRITE) {
+ for (i = 0; i < req->count; i++) {
+ cpu_physical_memory_write(req->addr + (sign * i *
req->size),
+ (uint8_t *) &req->data, req->size);
+ }
+ }
+ } else {
+ target_ulong tmp;
+
+ if (req->dir == IOREQ_READ) {
+ for (i = 0; i < req->count; i++) {
+ cpu_physical_memory_read(req->addr + (sign * i *
req->size),
+ (uint8_t*) &tmp, req->size);
+ cpu_physical_memory_write(req->data + (sign * i *
req->size),
+ (uint8_t*) &tmp, req->size);
+ }
+ } else if (req->dir == IOREQ_WRITE) {
+ for (i = 0; i < req->count; i++) {
+ cpu_physical_memory_read(req->data + (sign * i *
req->size),
+ (uint8_t*) &tmp, req->size);
+ cpu_physical_memory_write(req->addr + (sign * i *
req->size),
+ (uint8_t*) &tmp, req->size);
+ }
+ }
+ }
+}
+
+static void handle_ioreq(ioreq_t *req)
+{
+ if (!req->data_is_ptr && (req->dir == IOREQ_WRITE) &&
+ (req->size < sizeof (target_ulong))) {
+ req->data &= ((target_ulong) 1 << (8 * req->size)) - 1;
+ }
+
+ switch (req->type) {
+ case IOREQ_TYPE_PIO:
+ cpu_ioreq_pio(req);
+ break;
+ case IOREQ_TYPE_COPY:
+ cpu_ioreq_move(req);
+ break;
+ case IOREQ_TYPE_TIMEOFFSET:
+ break;
+ case IOREQ_TYPE_INVALIDATE:
+ qemu_invalidate_map_cache();
+ break;
+ default:
+ hw_error("Invalid ioreq type 0x%x\n", req->type);
+ }
+}
+
+static void handle_buffered_iopage(XenIOState *state)
+{
+ buf_ioreq_t *buf_req = NULL;
+ ioreq_t req;
+ int qw;
+
+ if (!state->buffered_io_page) {
+ return;
+ }
+
+ while (state->buffered_io_page->read_pointer !=
state->buffered_io_page->write_pointer) {
+ buf_req = &state->buffered_io_page->buf_ioreq[
+ state->buffered_io_page->read_pointer %
IOREQ_BUFFER_SLOT_NUM];
+ req.size = 1UL << buf_req->size;
+ req.count = 1;
+ req.addr = buf_req->addr;
+ req.data = buf_req->data;
+ req.state = STATE_IOREQ_READY;
+ req.dir = buf_req->dir;
+ req.df = 1;
+ req.type = buf_req->type;
+ req.data_is_ptr = 0;
+ qw = (req.size == 8);
+ if (qw) {
+ buf_req = &state->buffered_io_page->buf_ioreq[
+ (state->buffered_io_page->read_pointer + 1) %
IOREQ_BUFFER_SLOT_NUM];
+ req.data |= ((uint64_t)buf_req->data) << 32;
+ }
+
+ handle_ioreq(&req);
+
+ xen_mb();
+ state->buffered_io_page->read_pointer += qw ? 2 : 1;
+ }
+}
+
+static void handle_buffered_io(void *opaque)
+{
+ XenIOState *state = opaque;
+
+ handle_buffered_iopage(state);
+ qemu_mod_timer(state->buffered_io_timer,
+ BUFFER_IO_MAX_DELAY + qemu_get_clock(rt_clock));
+}
+
+static void cpu_handle_ioreq(void *opaque)
+{
+ XenIOState *state = opaque;
+ ioreq_t *req = cpu_get_ioreq(state);
+
+ handle_buffered_iopage(state);
+ if (req) {
+ handle_ioreq(req);
+
+ if (req->state != STATE_IOREQ_INPROCESS) {
+ fprintf(stderr, "Badness in I/O request ... not in service?!:
"
+ "%x, ptr: %x, port: %"PRIx64", "
+ "data: %"PRIx64", count: %"
FMT_ioreq_size ", size: %" FMT_ioreq_size "\n",
+ req->state, req->data_is_ptr, req->addr,
+ req->data, req->count, req->size);
+ destroy_hvm_domain();
+ return;
+ }
+
+ xen_wmb(); /* Update ioreq contents /then/ update state. */
+
+ /*
+ * We do this before we send the response so that the tools
+ * have the opportunity to pick up on the reset before the
+ * guest resumes and does a hlt with interrupts disabled which
+ * causes Xen to powerdown the domain.
+ */
+ if (vm_running) {
+ if (qemu_shutdown_requested_get()) {
+ destroy_hvm_domain();
+ }
+ if (qemu_reset_requested_get()) {
+ qemu_system_reset();
+ }
+ }
+
+ req->state = STATE_IORESP_READY;
+ xc_evtchn_notify(state->xce_handle,
state->ioreq_local_port[state->send_vcpu]);
+ }
+}
+
+static void xen_main_loop_prepare(XenIOState *state)
+{
+ int evtchn_fd = -1;
+
+ if (state->xce_handle != XC_HANDLER_INITIAL_VALUE) {
+ evtchn_fd = xc_evtchn_fd(state->xce_handle);
+ }
+
+ state->buffered_io_timer = qemu_new_timer(rt_clock, handle_buffered_io,
+ state);
+ qemu_mod_timer(state->buffered_io_timer, qemu_get_clock(rt_clock));
+
+ if (evtchn_fd != -1) {
+ qemu_set_fd_handler(evtchn_fd, cpu_handle_ioreq, NULL, state);
+ }
+}
+
+
/* Initialise Xen */
+static void xen_vm_change_state_handler(void *opaque, int running, int reason)
+{
+ XenIOState *state = opaque;
+ if (running) {
+ xen_main_loop_prepare(state);
+ }
+}
+
+static void xen_exit_notifier(Notifier *n)
+{
+ XenIOState *state = container_of(n, XenIOState, exit);
+
+ xc_evtchn_close(state->xce_handle);
+}
+
int xen_init(int smp_cpus)
{
+ int i, rc;
+ unsigned long ioreq_pfn;
+ XenIOState *state;
+
if (xen_mode == XEN_EMULATE)
xen_mode = XEN_ATTACH;
xen_interfaces_init();
@@ -128,9 +476,72 @@ int xen_init(int smp_cpus)
return -1;
}
+ state = qemu_mallocz(sizeof (XenIOState));
+
+ state->xce_handle = xc_evtchn_open(NULL, 0);
+ if (state->xce_handle == XC_HANDLER_INITIAL_VALUE) {
+ perror("xen: event channel open");
+ return -errno;
+ }
+
+ state->exit.notify = xen_exit_notifier;
+ qemu_add_exit_notifier(&state->exit);
+
+ xc_get_hvm_param(xen_xc, xen_domid, HVM_PARAM_IOREQ_PFN, &ioreq_pfn);
+ DPRINTF("shared page at pfn %lx\n", ioreq_pfn);
+ state->shared_page = xc_map_foreign_range(xen_xc, xen_domid,
XC_PAGE_SIZE,
+ PROT_READ|PROT_WRITE,
ioreq_pfn);
+ if (state->shared_page == NULL) {
+ hw_error("map shared IO page returned error %d handle="
XC_INTERFACE_FMT,
+ errno, xen_xc);
+ }
+
+ xc_get_hvm_param(xen_xc, xen_domid, HVM_PARAM_BUFIOREQ_PFN,
&ioreq_pfn);
+ DPRINTF("buffered io page at pfn %lx\n", ioreq_pfn);
+ state->buffered_io_page = xc_map_foreign_range(xen_xc, xen_domid,
XC_PAGE_SIZE,
+ PROT_READ|PROT_WRITE, ioreq_pfn);
+ if (state->buffered_io_page == NULL) {
+ hw_error("map buffered IO page returned error %d", errno);
+ }
+
+ state->ioreq_local_port = qemu_mallocz(smp_cpus * sizeof
(evtchn_port_t));
+
+ /* FIXME: how about if we overflow the page here? */
+ for (i = 0; i < smp_cpus; i++) {
+ rc = xc_evtchn_bind_interdomain(state->xce_handle, xen_domid,
+ xen_vcpu_eport(state->shared_page,
i));
+ if (rc == -1) {
+ fprintf(stderr, "bind interdomain ioctl error %d\n",
errno);
+ return -1;
+ }
+ state->ioreq_local_port[i] = rc;
+ }
+
/* Init RAM management */
qemu_map_cache_init();
xen_ram_init(ram_size);
+ qemu_add_vm_change_state_handler(xen_vm_change_state_handler, state);
+
return 0;
}
+
+void destroy_hvm_domain(void)
+{
+ qemu_xc_interface xc_handle;
+ int sts;
+
+ xc_handle = xc_interface_open(0, 0, 0);
+ if (xc_handle == XC_HANDLER_INITIAL_VALUE) {
+ fprintf(stderr, "Cannot acquire xenctrl handle\n");
+ } else {
+ sts = xc_domain_shutdown(xc_handle, xen_domid, SHUTDOWN_poweroff);
+ if (sts != 0) {
+ fprintf(stderr, "? xc_domain_shutdown failed to issue
poweroff, "
+ "sts %d, %s\n", sts, strerror(errno));
+ } else {
+ fprintf(stderr, "Issued domain %d poweroff\n",
xen_domid);
+ }
+ xc_interface_close(xc_handle);
+ }
+}
--
1.7.1
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xensource.com
http://lists.xensource.com/xen-devel
anthony.perard@citrix.com
2011-Jan-25 14:29 UTC
[Xen-devel] [PATCH V9 15/16] xen: Set running state in xenstore.
From: Anthony PERARD <anthony.perard@citrix.com>
This tells to the xen management tool that the machine can begin run.
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
---
xen-all.c | 27 +++++++++++++++++++++++++++
1 files changed, 27 insertions(+), 0 deletions(-)
diff --git a/xen-all.c b/xen-all.c
index a0248ee..c2d37d6 100644
--- a/xen-all.c
+++ b/xen-all.c
@@ -58,6 +58,8 @@ typedef struct XenIOState {
/* which vcpu we are serving */
int send_vcpu;
+ struct xs_handle *xenstore;
+
Notifier exit;
} XenIOState;
@@ -426,6 +428,21 @@ static void cpu_handle_ioreq(void *opaque)
}
}
+static void xenstore_record_dm_state(XenIOState *s, const char *state)
+{
+ char *path = NULL;
+
+ if (asprintf(&path, "/local/domain/0/device-model/%u/state",
xen_domid) == -1) {
+ fprintf(stderr, "out of memory recording dm state\n");
+ exit(1);
+ }
+ if (!xs_write(s->xenstore, XBT_NULL, path, state, strlen(state))) {
+ fprintf(stderr, "error recording dm state\n");
+ exit(1);
+ }
+ free(path);
+}
+
static void xen_main_loop_prepare(XenIOState *state)
{
int evtchn_fd = -1;
@@ -441,6 +458,9 @@ static void xen_main_loop_prepare(XenIOState *state)
if (evtchn_fd != -1) {
qemu_set_fd_handler(evtchn_fd, cpu_handle_ioreq, NULL, state);
}
+
+ /* record state running */
+ xenstore_record_dm_state(state, "running");
}
@@ -459,6 +479,7 @@ static void xen_exit_notifier(Notifier *n)
XenIOState *state = container_of(n, XenIOState, exit);
xc_evtchn_close(state->xce_handle);
+ xs_daemon_close(state->xenstore);
}
int xen_init(int smp_cpus)
@@ -484,6 +505,12 @@ int xen_init(int smp_cpus)
return -errno;
}
+ state->xenstore = xs_daemon_open();
+ if (state->xenstore == NULL) {
+ perror("xen: xenstore open");
+ return -errno;
+ }
+
state->exit.notify = xen_exit_notifier;
qemu_add_exit_notifier(&state->exit);
--
1.7.1
_______________________________________________
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Xen-devel@lists.xensource.com
http://lists.xensource.com/xen-devel
anthony.perard@citrix.com
2011-Jan-25 14:29 UTC
[Xen-devel] [PATCH V9 16/16] acpi-piix4: Add Xen hypercall for sleep state.
From: Anthony PERARD <anthony.perard@citrix.com>
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
---
hw/acpi_piix4.c | 4 ++++
hw/xen.h | 2 ++
xen-all.c | 7 +++++++
xen-stub.c | 4 ++++
4 files changed, 17 insertions(+), 0 deletions(-)
diff --git a/hw/acpi_piix4.c b/hw/acpi_piix4.c
index 5bbc2b5..ea94bf9 100644
--- a/hw/acpi_piix4.c
+++ b/hw/acpi_piix4.c
@@ -23,6 +23,7 @@
#include "acpi.h"
#include "sysemu.h"
#include "range.h"
+#include "xen.h"
//#define DEBUG
@@ -181,6 +182,9 @@ static void pm_ioport_write(IORange *ioport, uint64_t addr,
unsigned width,
if (s->cmos_s3) {
qemu_irq_raise(s->cmos_s3);
}
+ if (xen_enabled()) {
+ xen_set_hvm_sleep_state();
+ }
default:
break;
}
diff --git a/hw/xen.h b/hw/xen.h
index dd3fb68..8920550 100644
--- a/hw/xen.h
+++ b/hw/xen.h
@@ -44,6 +44,8 @@ int xen_pci_slot_get_pirq(PCIDevice *pci_dev, int irq_num);
void xen_piix3_set_irq(void *opaque, int irq_num, int level);
void xen_piix_pci_write_config_client(uint32_t address, uint32_t val, int len);
+void xen_set_hvm_sleep_state(void);
+
int xen_init(int smp_cpus);
#if defined(NEED_CPU_H) && !defined(CONFIG_USER_ONLY)
diff --git a/xen-all.c b/xen-all.c
index c2d37d6..86ebfcb 100644
--- a/xen-all.c
+++ b/xen-all.c
@@ -464,6 +464,13 @@ static void xen_main_loop_prepare(XenIOState *state)
}
+/* ACPI */
+
+void xen_set_hvm_sleep_state(void)
+{
+ xc_set_hvm_param(xen_xc, xen_domid, HVM_PARAM_ACPI_S_STATE, 3);
+}
+
/* Initialise Xen */
static void xen_vm_change_state_handler(void *opaque, int running, int reason)
diff --git a/xen-stub.c b/xen-stub.c
index c9f477d..d22f475 100644
--- a/xen-stub.c
+++ b/xen-stub.c
@@ -28,6 +28,10 @@ void xen_ram_alloc(ram_addr_t ram_addr, ram_addr_t size)
{
}
+void xen_set_hvm_sleep_state(void)
+{
+}
+
int xen_init(int smp_cpus)
{
return -ENOSYS;
--
1.7.1
_______________________________________________
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Xen-devel@lists.xensource.com
http://lists.xensource.com/xen-devel
Anthony PERARD
2011-Jan-25 14:41 UTC
[Xen-devel] Re: [PATCH V9 00/16] Xen device model support
On Tue, 25 Jan 2011, Anthony Perard wrote:> From: Anthony PERARD <anthony.perard@citrix.com> > > Hi, > > This patch series adds Xen device model support in QEMU. > > It rebased on qemu master and updated against the last Xen-unstable. > > This series depends on the series "Introduce "machine" QemuOpts". > > > You can find a git tree here: > > git://xenbits.xen.org/people/aperard/qemu-dm.git qemu-dm-v9 >I forgot to add that this series has already: Acked-by: Alexander Graf <agraf@suse.de> -- Anthony PERARD _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Isaku Yamahata
2011-Jan-26 02:49 UTC
[Xen-devel] Re: [Qemu-devel] [PATCH V9 16/16] acpi-piix4: Add Xen hypercall for sleep state.
On Tue, Jan 25, 2011 at 02:29:20PM +0000, anthony.perard@citrix.com wrote:> From: Anthony PERARD <anthony.perard@citrix.com> > > Signed-off-by: Anthony PERARD <anthony.perard@citrix.com> > --- > hw/acpi_piix4.c | 4 ++++ > hw/xen.h | 2 ++ > xen-all.c | 7 +++++++ > xen-stub.c | 4 ++++ > 4 files changed, 17 insertions(+), 0 deletions(-) > > diff --git a/hw/acpi_piix4.c b/hw/acpi_piix4.c > index 5bbc2b5..ea94bf9 100644 > --- a/hw/acpi_piix4.c > +++ b/hw/acpi_piix4.c > @@ -23,6 +23,7 @@ > #include "acpi.h" > #include "sysemu.h" > #include "range.h" > +#include "xen.h" > > //#define DEBUG > > @@ -181,6 +182,9 @@ static void pm_ioport_write(IORange *ioport, uint64_t addr, unsigned width, > if (s->cmos_s3) { > qemu_irq_raise(s->cmos_s3); > } > + if (xen_enabled()) { > + xen_set_hvm_sleep_state(); > + } > default: > break; > }Why not utilize cmos_s3 callback? Something like - cmos_s3 = qemu_allocate_irqs(pc_cmos_set_s3_resume, rtc_state, 1); + cmos_s3 = qemu_allocate_irqs(xen_cmos_set_s3_resume, rtc_state, 1); smbus = piix4_pm_init(pci_bus, piix3_devfn + 3, 0xb100, isa_reserve_irq(9), *cmos_s3, *smi_irq, kvm_enabled()); xen_cmos_set_s3_resume() pc_cmos_set_s3_resume() xen_set_hvm_sleep_state() thanks,> diff --git a/hw/xen.h b/hw/xen.h > index dd3fb68..8920550 100644 > --- a/hw/xen.h > +++ b/hw/xen.h > @@ -44,6 +44,8 @@ int xen_pci_slot_get_pirq(PCIDevice *pci_dev, int irq_num); > void xen_piix3_set_irq(void *opaque, int irq_num, int level); > void xen_piix_pci_write_config_client(uint32_t address, uint32_t val, int len); > > +void xen_set_hvm_sleep_state(void); > + > int xen_init(int smp_cpus); > > #if defined(NEED_CPU_H) && !defined(CONFIG_USER_ONLY) > diff --git a/xen-all.c b/xen-all.c > index c2d37d6..86ebfcb 100644 > --- a/xen-all.c > +++ b/xen-all.c > @@ -464,6 +464,13 @@ static void xen_main_loop_prepare(XenIOState *state) > } > > > +/* ACPI */ > + > +void xen_set_hvm_sleep_state(void) > +{ > + xc_set_hvm_param(xen_xc, xen_domid, HVM_PARAM_ACPI_S_STATE, 3); > +} > + > /* Initialise Xen */ > > static void xen_vm_change_state_handler(void *opaque, int running, int reason) > diff --git a/xen-stub.c b/xen-stub.c > index c9f477d..d22f475 100644 > --- a/xen-stub.c > +++ b/xen-stub.c > @@ -28,6 +28,10 @@ void xen_ram_alloc(ram_addr_t ram_addr, ram_addr_t size) > { > } > > +void xen_set_hvm_sleep_state(void) > +{ > +} > + > int xen_init(int smp_cpus) > { > return -ENOSYS; > -- > 1.7.1 > >-- yamahata _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Anthony PERARD
2011-Jan-26 13:47 UTC
[Xen-devel] Re: [Qemu-devel] [PATCH V9 16/16] acpi-piix4: Add Xen hypercall for sleep state.
On Wed, 26 Jan 2011, Isaku Yamahata wrote:> On Tue, Jan 25, 2011 at 02:29:20PM +0000, anthony.perard@citrix.com wrote: > > From: Anthony PERARD <anthony.perard@citrix.com> > > > > Signed-off-by: Anthony PERARD <anthony.perard@citrix.com> > > --- > > hw/acpi_piix4.c | 4 ++++ > > hw/xen.h | 2 ++ > > xen-all.c | 7 +++++++ > > xen-stub.c | 4 ++++ > > 4 files changed, 17 insertions(+), 0 deletions(-) > > > > diff --git a/hw/acpi_piix4.c b/hw/acpi_piix4.c > > index 5bbc2b5..ea94bf9 100644 > > --- a/hw/acpi_piix4.c > > +++ b/hw/acpi_piix4.c > > @@ -23,6 +23,7 @@ > > #include "acpi.h" > > #include "sysemu.h" > > #include "range.h" > > +#include "xen.h" > > > > //#define DEBUG > > > > @@ -181,6 +182,9 @@ static void pm_ioport_write(IORange *ioport, uint64_t addr, unsigned width, > > if (s->cmos_s3) { > > qemu_irq_raise(s->cmos_s3); > > } > > + if (xen_enabled()) { > > + xen_set_hvm_sleep_state(); > > + } > > default: > > break; > > } > > Why not utilize cmos_s3 callback? > Something like > > - cmos_s3 = qemu_allocate_irqs(pc_cmos_set_s3_resume, rtc_state, 1); > + cmos_s3 = qemu_allocate_irqs(xen_cmos_set_s3_resume, rtc_state, 1); > smbus = piix4_pm_init(pci_bus, piix3_devfn + 3, 0xb100, > isa_reserve_irq(9), *cmos_s3, *smi_irq, > kvm_enabled()); > > > xen_cmos_set_s3_resume() > pc_cmos_set_s3_resume() > xen_set_hvm_sleep_state() > > > thanks,I will do that and resend the patch. Thanks for this! -- Anthony PERARD _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
anthony.perard@citrix.com
2011-Jan-26 14:36 UTC
[Xen-devel] Re: [PATCH V9 16/16] xen: Add Xen hypercall for sleep state in the cmos_s3 callback.
From: Anthony PERARD <anthony.perard@citrix.com>
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
---
hw/xen_machine_fv.c | 11 ++++++++++-
1 files changed, 10 insertions(+), 1 deletions(-)
diff --git a/hw/xen_machine_fv.c b/hw/xen_machine_fv.c
index 0a90312..f48b978 100644
--- a/hw/xen_machine_fv.c
+++ b/hw/xen_machine_fv.c
@@ -38,9 +38,18 @@
#include "xen/hvm/hvm_info_table.h"
#include "xen_platform.h"
#include "xen_common.h"
+#include "xen_backend.h"
#define MAX_IDE_BUS 2
+static void xen_cmos_set_s3_resume(void *opaque, int irq, int level)
+{
+ pc_cmos_set_s3_resume(opaque, irq, level);
+ if (level) {
+ xc_set_hvm_param(xen_xc, xen_domid, HVM_PARAM_ACPI_S_STATE, 3);
+ }
+}
+
static void xen_init_fv(ram_addr_t ram_size,
const char *boot_device,
const char *kernel_filename,
@@ -132,7 +141,7 @@ static void xen_init_fv(ram_addr_t ram_size,
}
if (acpi_enabled) {
- cmos_s3 = qemu_allocate_irqs(pc_cmos_set_s3_resume, rtc_state, 1);
+ cmos_s3 = qemu_allocate_irqs(xen_cmos_set_s3_resume, rtc_state, 1);
smi_irq = qemu_allocate_irqs(pc_acpi_smi_interrupt, first_cpu, 1);
piix4_pm_init(pci_bus, piix3_devfn + 3, 0xb100,
isa_reserve_irq(9), *cmos_s3, *smi_irq, 0);
--
1.7.1
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Xen-devel@lists.xensource.com
http://lists.xensource.com/xen-devel
Anthony Liguori
2011-Jan-26 22:49 UTC
[Xen-devel] Re: [Qemu-devel] [PATCH V9 03/16] xen: Add a generic layer for xc calls
On 01/25/2011 08:29 AM, anthony.perard@citrix.com wrote:> From: Alexander Graf<agraf@suse.de> > > This patch adds a generic layer for xc calls, allowing us to choose between the > xenner and xen implementations at runtime. > > Signed-off-by: Alexander Graf<agraf@suse.de> > Signed-off-by: Anthony PERARD<anthony.perard@citrix.com> > --- > hw/xen_interfaces.c | 100 +++++++++++++++++++++++++++++++++++++++++++++++++ > hw/xen_interfaces.h | 104 +++++++++++++++++++++++++++++++++++++++++++++++++++ > hw/xen_redirect.h | 56 +++++++++++++++++++++++++++ > 3 files changed, 260 insertions(+), 0 deletions(-) > create mode 100644 hw/xen_interfaces.c > create mode 100644 hw/xen_interfaces.h > create mode 100644 hw/xen_redirect.h > > diff --git a/hw/xen_interfaces.c b/hw/xen_interfaces.c > new file mode 100644 > index 0000000..09f40e0 > --- /dev/null > +++ b/hw/xen_interfaces.c > @@ -0,0 +1,100 @@ >Needs a copyright.> +#include<xenctrl.h> > +#include<xs.h> > + > +#include "hw.h" > +#include "xen.h" > +#include "xen_interfaces.h" > + > +#ifdef CONFIG_XEN > + > +static int xc_evtchn_domid(int handle, int domid) > +{ > + return -1; > +} > + > +static struct XenEvtOps xc_evtchn_xen = { > + .open = xc_evtchn_open, > + .domid = xc_evtchn_domid, > + .close = xc_evtchn_close, > + .fd = xc_evtchn_fd, > + .notify = xc_evtchn_notify, > + .bind_unbound_port = xc_evtchn_bind_unbound_port, > + .bind_interdomain = xc_evtchn_bind_interdomain, > + .bind_virq = xc_evtchn_bind_virq, > + .unbind = xc_evtchn_unbind, > + .pending = xc_evtchn_pending, > + .unmask = xc_evtchn_unmask, > +}; > + > +static int xs_domid(struct xs_handle *h, int domid) > +{ > + return -1; > +} > + > +static struct XenStoreOps xs_xen = { > + .daemon_open = xs_daemon_open, > + .domain_open = xs_domain_open, > + .daemon_open_readonly = xs_daemon_open_readonly, > + .domid = xs_domid, > + .daemon_close = xs_daemon_close, > + .directory = xs_directory, > + .read = xs_read, > + .write = xs_write, > + .mkdir = xs_mkdir, > + .rm = xs_rm, > + .get_permissions = xs_get_permissions, > + .set_permissions = xs_set_permissions, > + .watch = xs_watch, > + .fileno = xs_fileno, > + .read_watch = xs_read_watch, > + .unwatch = xs_unwatch, > + .transaction_start = xs_transaction_start, > + .transaction_end = xs_transaction_end, > + .introduce_domain = xs_introduce_domain, > + .resume_domain = xs_resume_domain, > + .release_domain = xs_release_domain, > + .get_domain_path = xs_get_domain_path, > + .is_domain_introduced = xs_is_domain_introduced, > +}; > + > +static struct XenGnttabOps xc_gnttab_xen = { > + .open = xc_gnttab_open, > + .close = xc_gnttab_close, > + .map_grant_ref = xc_gnttab_map_grant_ref, > + .map_grant_refs = xc_gnttab_map_grant_refs, > + .munmap = xc_gnttab_munmap, > +}; > + > +struct XenIfOps xc_xen = { > + .interface_open = xc_interface_open, > + .interface_close = xc_interface_close, > + .map_foreign_range = xc_map_foreign_range, > + .map_foreign_pages = xc_map_foreign_pages, > + .map_foreign_bulk = xc_map_foreign_bulk, > +}; > + > +#endif > + > +struct XenEvtOps xc_evtchn; > +struct XenGnttabOps xc_gnttab; > +struct XenIfOps xc; > +struct XenStoreOps xs; > + > +void xen_interfaces_init(void) > +{ > + switch (xen_mode) { > +#ifdef CONFIG_XEN > + case XEN_ATTACH: > + case XEN_CREATE: > + xc_evtchn = xc_evtchn_xen; > + xc_gnttab = xc_gnttab_xen; > + xc = xc_xen; > + xs = xs_xen; > + break; > +#endif > + default: > + fprintf(stderr, "ERROR: Compiled without %s support, sorry.\n", > + xen_mode == XEN_EMULATE ? "xenner" : "Xen"); > + exit(1); > + } > +} > diff --git a/hw/xen_interfaces.h b/hw/xen_interfaces.h > new file mode 100644 > index 0000000..1086850 > --- /dev/null > +++ b/hw/xen_interfaces.h > @@ -0,0 +1,104 @@ > +#ifndef QEMU_HW_XEN_INTERFACES_H > +#define QEMU_HW_XEN_INTERFACES_H 1 > + > +#include<xenctrl.h> > +#include<xs.h> > + > +/* ------------------------------------------------------------- */ > +/* xen event channel interface */ > + > +struct XenEvtOps { > + int (*open)(void); > + int (*domid)(int xce_handle, int domid); > + int (*close)(int xce_handle); > + int (*fd)(int xce_handle); > + int (*notify)(int xce_handle, evtchn_port_t port); > + evtchn_port_or_error_t (*bind_unbound_port)(int xce_handle, int domid); > + evtchn_port_or_error_t (*bind_interdomain)(int xce_handle, int domid, > + evtchn_port_t remote_port); > + evtchn_port_or_error_t (*bind_virq)(int xce_handle, unsigned int virq); > + int (*unbind)(int xce_handle, evtchn_port_t port); > + evtchn_port_or_error_t (*pending)(int xce_handle); > + int (*unmask)(int xce_handle, evtchn_port_t port); > +}; > +extern struct XenEvtOps xc_evtchn; >typedef away the struct please.> +/* ------------------------------------------------------------- */ > +/* xenstore interface */ > + > +struct xs_handle; > +struct XenStoreOps { > + struct xs_handle *(*daemon_open)(void); > + struct xs_handle *(*domain_open)(void); > + struct xs_handle *(*daemon_open_readonly)(void); > + int (*domid)(struct xs_handle *h, int domid); > + void (*daemon_close)(struct xs_handle *); > + char **(*directory)(struct xs_handle *h, xs_transaction_t t, > + const char *path, unsigned int *num); > + void *(*read)(struct xs_handle *h, xs_transaction_t t, > + const char *path, unsigned int *len); > + bool (*write)(struct xs_handle *h, xs_transaction_t t, > + const char *path, const void *data, unsigned int len); > + bool (*mkdir)(struct xs_handle *h, xs_transaction_t t, > + const char *path); > + bool (*rm)(struct xs_handle *h, xs_transaction_t t, > + const char *path); > + struct xs_permissions *(*get_permissions)(struct xs_handle *h, > + xs_transaction_t t, > + const char *path, unsigned int *num); > + bool (*set_permissions)(struct xs_handle *h, xs_transaction_t t, > + const char *path, struct xs_permissions *perms, > + unsigned int num_perms); > + bool (*watch)(struct xs_handle *h, const char *path, const char *token); > + int (*fileno)(struct xs_handle *h); > + char **(*read_watch)(struct xs_handle *h, unsigned int *num); > + bool (*unwatch)(struct xs_handle *h, const char *path, const char *token); > + xs_transaction_t (*transaction_start)(struct xs_handle *h); > + bool (*transaction_end)(struct xs_handle *h, xs_transaction_t t, > + bool abort); > + bool (*introduce_domain)(struct xs_handle *h, > + unsigned int domid, > + unsigned long mfn, > + unsigned int eventchn); > + bool (*resume_domain)(struct xs_handle *h, unsigned int domid); > + bool (*release_domain)(struct xs_handle *h, unsigned int domid); > + char *(*get_domain_path)(struct xs_handle *h, unsigned int domid); > + bool (*is_domain_introduced)(struct xs_handle *h, unsigned int domid); > +}; > +extern struct XenStoreOps xs; > + > +/* ------------------------------------------------------------- */ > +/* xen grant table interface */ > + > +struct XenGnttabOps { > + int (*open)(void); > + int (*close)(int xcg_handle); > + void *(*map_grant_ref)(int xcg_handle, uint32_t domid, > + uint32_t ref, int prot); > + void *(*map_grant_refs)(int xcg_handle, uint32_t count, > + uint32_t *domids, uint32_t *refs, int prot); > + int (*munmap)(int xcg_handle, void *start_address, uint32_t count); > +}; > +extern struct XenGnttabOps xc_gnttab; > + > +/* ------------------------------------------------------------- */ > +/* xen hypercall interface */ > + > +struct XenIfOps { > + int (*interface_open)(void); > + int (*interface_close)(int xc_handle); > + void *(*map_foreign_range)(int xc_handle, uint32_t dom, > + int size, int prot, > + unsigned long mfn); > + void *(*map_foreign_pages)(int xc_handle, uint32_t dom, int prot, > + const xen_pfn_t *arr, int num); > + void *(*map_foreign_bulk)(int xc_handle, uint32_t dom, int prot, > + xen_pfn_t *arr, int num); > +}; > +extern struct XenIfOps xc; > + > +/* ------------------------------------------------------------- */ > + > +void xen_interfaces_init(void); > + > +#endif /* QEMU_HW_XEN_INTERFACES_H */ > diff --git a/hw/xen_redirect.h b/hw/xen_redirect.h > new file mode 100644 > index 0000000..6ddecf3 > --- /dev/null > +++ b/hw/xen_redirect.h > @@ -0,0 +1,56 @@ > +#ifndef QEMU_HW_XEN_REDIRECT_H > +#define QEMU_HW_XEN_REDIRECT_H 1 > + > +#include "xen_interfaces.h" > + > +/* xen event channel interface */ > +#define xc_evtchn_open xc_evtchn.open > +#define xc_evtchn_close xc_evtchn.close > +#define xc_evtchn_fd xc_evtchn.fd > +#define xc_evtchn_notify xc_evtchn.notify > +#define xc_evtchn_bind_unbound_port xc_evtchn.bind_unbound_port > +#define xc_evtchn_bind_interdomain xc_evtchn.bind_interdomain > +#define xc_evtchn_bind_virq xc_evtchn.bind_virq > +#define xc_evtchn_unbind xc_evtchn.unbind > +#define xc_evtchn_pending xc_evtchn.pending > +#define xc_evtchn_unmask xc_evtchn.unmask > + > +/* grant table interface */ > +#define xc_gnttab_open xc_gnttab.open > +#define xc_gnttab_close xc_gnttab.close > +#define xc_gnttab_map_grant_ref xc_gnttab.map_grant_ref > +#define xc_gnttab_map_grant_refs xc_gnttab.map_grant_refs > +#define xc_gnttab_munmap xc_gnttab.munmap > + > +/* xen hypercall interface */ > +#define xc_interface_open xc.interface_open > +#define xc_interface_close xc.interface_close > +#define xc_map_foreign_range xc.map_foreign_range > +#define xc_map_foreign_pages xc.map_foreign_pages > +#define xc_map_foreign_bulk xc.map_foreign_bulk > + > +/* xenstore interface */ > +#define xs_daemon_open xs.daemon_open > +#define xs_domain_open xs.domain_open > +#define xs_daemon_open_readonly xs.daemon_open_readonly > +#define xs_daemon_close xs.daemon_close > +#define xs_directory xs.directory > +#define xs_read xs.read > +#define xs_write xs.write > +#define xs_mkdir xs.mkdir > +#define xs_rm xs.rm > +#define xs_get_permissions xs.get_permissions > +#define xs_set_permissions xs.set_permissions > +#define xs_watch xs.watch > +#define xs_fileno xs.fileno > +#define xs_read_watch xs.read_watch > +#define xs_unwatch xs.unwatch > +#define xs_transaction_start xs.transaction_start > +#define xs_transaction_end xs.transaction_end > +#define xs_introduce_domain xs.introduce_domain > +#define xs_resume_domain xs.resume_domain > +#define xs_release_domain xs.release_domain > +#define xs_get_domain_path xs.get_domain_path > +#define xs_is_domain_introduced xs.is_domain_introduced >static inline please. Regards, Anthony Liguori> +#endif /* QEMU_HW_XEN_REDIRECT_H */ >_______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Anthony Liguori
2011-Jan-26 22:53 UTC
[Xen-devel] Re: [Qemu-devel] [PATCH V9 04/16] xen: Support new libxc calls from xen unstable.
On 01/25/2011 08:29 AM, anthony.perard@citrix.com wrote:> From: Anthony PERARD<anthony.perard@citrix.com> > > Update the libxenctrl calls in Qemu to use the new interface, otherwise > Qemu wouldn''t be able to build against new versions of the library. > > We also check libxenctrl version in configure, from Xen 3.3.0 to Xen > unstable. > > Signed-off-by: Anthony PERARD<anthony.perard@citrix.com> > Signed-off-by: Stefano Stabellini<stefano.stabellini@eu.citrix.com> > --- > Makefile.target | 3 + > configure | 62 +++++++++++++++++++++++++++++- > hw/xen_backend.c | 21 +++++----- > hw/xen_backend.h | 7 ++- > hw/xen_common.h | 36 ++++++++++------- > hw/xen_disk.c | 4 +- > hw/xen_domainbuild.c | 2 +- > hw/xen_interfaces.c | 103 +++++++++++++++++++++++++++++++++++++++++++++----- > hw/xen_interfaces.h | 76 +++++++++++++++++++++++++------------ > hw/xen_redirect.h | 32 ++++++++------- > 10 files changed, 264 insertions(+), 82 deletions(-) > > diff --git a/Makefile.target b/Makefile.target > index db29e96..d09719f 100644 > --- a/Makefile.target > +++ b/Makefile.target > @@ -205,6 +205,9 @@ QEMU_CFLAGS += $(VNC_SASL_CFLAGS) > QEMU_CFLAGS += $(VNC_JPEG_CFLAGS) > QEMU_CFLAGS += $(VNC_PNG_CFLAGS) > > +# xen support > +obj-$(CONFIG_XEN) += xen_interfaces.o > + > # xen backend driver support > obj-$(CONFIG_XEN) += xen_backend.o xen_devconfig.o > obj-$(CONFIG_XEN) += xen_console.o xenfb.o xen_disk.o xen_nic.o > diff --git a/configure b/configure > index 5a9121d..fde9bad 100755 > --- a/configure > +++ b/configure > @@ -126,6 +126,7 @@ vnc_jpeg="" > vnc_png="" > vnc_thread="no" > xen="" > +xen_ctrl_version="" > linux_aio="" > attr="" > vhost_net="" > @@ -1144,13 +1145,71 @@ fi > > if test "$xen" != "no" ; then > xen_libs="-lxenstore -lxenctrl -lxenguest" > + > + # Xen unstable > cat> $TMPC<<EOF > #include<xenctrl.h> > #include<xs.h> > -int main(void) { xs_daemon_open(); xc_interface_open(); return 0; } > +#include<stdint.h> > +#include<xen/hvm/hvm_info_table.h> > +#if !defined(HVM_MAX_VCPUS) > +# error HVM_MAX_VCPUS not defined > +#endif > +int main(void) { > + xc_interface *xc; > + xs_daemon_open(); > + xc = xc_interface_open(0, 0, 0); > + xc_hvm_set_mem_type(0, 0, HVMMEM_ram_ro, 0, 0); > + xc_gnttab_open(NULL, 0); > + return 0; > +} > EOF > if compile_prog "" "$xen_libs" ; then > + xen_ctrl_version=410 > + xen=yes > + > + # Xen 4.0.0 > + elif ( > + cat> $TMPC<<EOF > +#include<xenctrl.h> > +#include<xs.h> > +#include<stdint.h> > +#include<xen/hvm/hvm_info_table.h> > +#if !defined(HVM_MAX_VCPUS) > +# error HVM_MAX_VCPUS not defined > +#endif > +int main(void) { > + xs_daemon_open(); > + xc_interface_open(); > + xc_gnttab_open(); > + xc_hvm_set_mem_type(0, 0, HVMMEM_ram_ro, 0, 0); > + return 0; > +} >Really? There''s no VERSION #define? Can please fix this upstream so we don''t have to do this forever.> diff --git a/hw/xen_backend.c b/hw/xen_backend.c > index 860b038..7e78546 100644 > --- a/hw/xen_backend.c > +++ b/hw/xen_backend.c > @@ -43,7 +43,8 @@ > /* ------------------------------------------------------------- */ > > /* public */ > -int xen_xc; > +qemu_xc_interface xen_xc = XC_HANDLER_INITIAL_VALUE; > +qemu_xc_gnttab xen_xcg = XC_HANDLER_INITIAL_VALUE; >Where ever qemu_xc_interface comes from, the typename needs to change.> +/* Xen unstable */ > +#if CONFIG_XEN_CTRL_INTERFACE_VERSION< 410 > +typedef int qemu_xc_interface; >Ah, right here :-) Regards, Anthony Liguori _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Anthony Liguori
2011-Jan-26 22:56 UTC
[Xen-devel] Re: [Qemu-devel] [PATCH V9 05/16] xen: Add xen_machine_fv
On 01/25/2011 08:29 AM, anthony.perard@citrix.com wrote:> From: Anthony PERARD<anthony.perard@citrix.com> > > Add the Xen FV (Fully Virtualized) machine to Qemu; > this is groundwork to add Xen device model support in Qemu. > > Signed-off-by: Anthony PERARD<anthony.perard@citrix.com> > Signed-off-by: Stefano Stabellini<stefano.stabellini@eu.citrix.com> > --- > Makefile.target | 3 + > hw/xen_common.h | 5 ++ > hw/xen_machine_fv.c | 159 +++++++++++++++++++++++++++++++++++++++++++++++++++ > 3 files changed, 167 insertions(+), 0 deletions(-) > create mode 100644 hw/xen_machine_fv.c > > diff --git a/Makefile.target b/Makefile.target > index d09719f..07cc21e 100644 > --- a/Makefile.target > +++ b/Makefile.target > @@ -213,6 +213,9 @@ obj-$(CONFIG_XEN) += xen_backend.o xen_devconfig.o > obj-$(CONFIG_XEN) += xen_console.o xenfb.o xen_disk.o xen_nic.o > obj-i386-$(CONFIG_XEN) += xen_machine_pv.o xen_domainbuild.o > > +# xen full virtualized machine > +obj-i386-$(CONFIG_XEN) += xen_machine_fv.o > + > # Inter-VM PCI shared memory > obj-$(CONFIG_KVM) += ivshmem.o > > diff --git a/hw/xen_common.h b/hw/xen_common.h > index 33df207..b98d107 100644 > --- a/hw/xen_common.h > +++ b/hw/xen_common.h > @@ -18,6 +18,11 @@ > * We don''t support Xen prior to 3.3.0. > */ > > +/* Before Xen 4.0.0 */ > +#if CONFIG_XEN_CTRL_INTERFACE_VERSION< 400 > +# define HVM_MAX_VCPUS 32 > +#endif > + > /* Xen unstable */ > #if CONFIG_XEN_CTRL_INTERFACE_VERSION< 410 > typedef int qemu_xc_interface; > diff --git a/hw/xen_machine_fv.c b/hw/xen_machine_fv.c > new file mode 100644 > index 0000000..657c1e8 > --- /dev/null > +++ b/hw/xen_machine_fv.c > @@ -0,0 +1,159 @@ > +/* > + * QEMU Xen FV Machine > + * > + * Copyright (c) 2003-2007 Fabrice Bellard > + * Copyright (c) 2007 Red Hat > + * > + * Permission is hereby granted, free of charge, to any person obtaining a copy > + * of this software and associated documentation files (the "Software"), to deal > + * in the Software without restriction, including without limitation the rights > + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell > + * copies of the Software, and to permit persons to whom the Software is > + * furnished to do so, subject to the following conditions: > + * > + * The above copyright notice and this permission notice shall be included in > + * all copies or substantial portions of the Software. > + * > + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR > + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, > + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL > + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER > + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, > + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN > + * THE SOFTWARE. > + */ > + > +#include "hw.h" > +#include "pc.h" > +#include "pci.h" > +#include "usb-uhci.h" > +#include "net.h" > +#include "boards.h" > +#include "ide.h" > +#include "sysemu.h" > +#include "blockdev.h" > +#include "arch_init.h" > + > +#include "xen_common.h" > +#include "xen/hvm/hvm_info_table.h" > + > +#define MAX_IDE_BUS 2 > + > +static void xen_init_fv(ram_addr_t ram_size, > + const char *boot_device, > + const char *kernel_filename, > + const char *kernel_cmdline, > + const char *initrd_filename, > + const char *cpu_model) > +{ > + int i; > + ram_addr_t below_4g_mem_size, above_4g_mem_size = 0; > + PCIBus *pci_bus; > + PCII440FXState *i440fx_state; > + int piix3_devfn = -1; > + qemu_irq *cpu_irq; > + qemu_irq *isa_irq; > + qemu_irq *i8259; > + qemu_irq *cmos_s3; > + qemu_irq *smi_irq; > + IsaIrqState *isa_irq_state; > + DriveInfo *hd[MAX_IDE_BUS * MAX_IDE_DEVS]; > + FDCtrl *floppy_controller; > + BusState *idebus[MAX_IDE_BUS]; > + ISADevice *rtc_state; > + > + CPUState *env; > + > + /* Initialize a dummy CPU */ > + if (cpu_model == NULL) { > +#ifdef TARGET_X86_64 > + cpu_model = "qemu64"; > +#else > + cpu_model = "qemu32"; > +#endif > + } > + env = cpu_init(cpu_model); > + env->halted = 1; > + > + cpu_irq = pc_allocate_cpu_irq(); > + i8259 = i8259_init(cpu_irq[0]); > + isa_irq_state = qemu_mallocz(sizeof (*isa_irq_state)); > + isa_irq_state->i8259 = i8259; > + > + isa_irq = qemu_allocate_irqs(isa_irq_handler, isa_irq_state, 24); > + > + pci_bus = i440fx_init(&i440fx_state,&piix3_devfn, isa_irq, ram_size); > + isa_bus_irqs(isa_irq); > + > + pc_register_ferr_irq(isa_reserve_irq(13)); > + > + pc_vga_init(pci_bus); > + > + /* init basic PC hardware */ > + pc_basic_device_init(isa_irq,&floppy_controller,&rtc_state); > + > + for (i = 0; i< nb_nics; i++) { > + NICInfo *nd =&nd_table[i]; > + > + if (nd->model&& strcmp(nd->model, "ne2k_isa") == 0) > + pc_init_ne2k_isa(nd); > + else > + pci_nic_init_nofail(nd, "e1000", NULL); > + } > + > + if (drive_get_max_bus(IF_IDE)>= MAX_IDE_BUS) { > + fprintf(stderr, "qemu: too many IDE bus\n"); > + exit(1); > + } > + > + for (i = 0; i< MAX_IDE_BUS * MAX_IDE_DEVS; i++) { > + hd[i] = drive_get(IF_IDE, i / MAX_IDE_DEVS, i % MAX_IDE_DEVS); > + } > + > + PCIDevice *dev = pci_piix3_ide_init(pci_bus, hd, piix3_devfn + 1); > + idebus[0] = qdev_get_child_bus(&dev->qdev, "ide.0"); > + idebus[1] = qdev_get_child_bus(&dev->qdev, "ide.1"); > + > + audio_init(isa_irq, pci_bus); > + > + if (ram_size>= 0xe0000000) { > + above_4g_mem_size = ram_size - 0xe0000000; > + below_4g_mem_size = 0xe0000000; > + } else { > + below_4g_mem_size = ram_size; > + } > + pc_cmos_init(below_4g_mem_size, above_4g_mem_size, boot_device, > + idebus[0], idebus[1], floppy_controller, rtc_state); > + > + if (usb_enabled) { > + usb_uhci_piix3_init(pci_bus, piix3_devfn + 2); > + } > + > + if (acpi_enabled) { > + cmos_s3 = qemu_allocate_irqs(pc_cmos_set_s3_resume, rtc_state, 1); > + smi_irq = qemu_allocate_irqs(pc_acpi_smi_interrupt, first_cpu, 1); > + piix4_pm_init(pci_bus, piix3_devfn + 3, 0xb100, > + isa_reserve_irq(9), *cmos_s3, *smi_irq, 0); > + } > + > + if (i440fx_state) { > + i440fx_init_memory_mappings(i440fx_state); > + } > + > + pc_pci_device_init(pci_bus); > +} >It''s not obvious to me why you can''t make use of most of the normal pc code here. Regards, Anthony Liguori> + > +static QEMUMachine xenfv_machine = { > + .name = "xenfv", > + .desc = "Xen Fully-virtualized PC", > + .init = xen_init_fv, > + .max_cpus = HVM_MAX_VCPUS, > + .default_machine_opts = "accel=xen", > +}; > + > +static void xenfv_machine_init(void) > +{ > + qemu_register_machine(&xenfv_machine); > +} > + > +machine_init(xenfv_machine_init); >_______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Anthony Liguori
2011-Jan-26 22:57 UTC
[Xen-devel] Re: [Qemu-devel] [PATCH V9 06/16] xen: Add initialisation of Xen
On 01/25/2011 08:29 AM, anthony.perard@citrix.com wrote:> From: Anthony PERARD<anthony.perard@citrix.com> > > Signed-off-by: Anthony PERARD<anthony.perard@citrix.com> > --- > Makefile.target | 3 +++ > hw/xen.h | 13 +++++++++++++ > vl.c | 2 ++ > xen-all.c | 29 +++++++++++++++++++++++++++++ > xen-stub.c | 17 +++++++++++++++++ > 5 files changed, 64 insertions(+), 0 deletions(-) > create mode 100644 xen-all.c > create mode 100644 xen-stub.c > > diff --git a/Makefile.target b/Makefile.target > index 07cc21e..8b5fe36 100644 > --- a/Makefile.target > +++ b/Makefile.target > @@ -3,6 +3,7 @@ > GENERATED_HEADERS = config-target.h > CONFIG_NO_PCI = $(if $(subst n,,$(CONFIG_PCI)),n,y) > CONFIG_NO_KVM = $(if $(subst n,,$(CONFIG_KVM)),n,y) > +CONFIG_NO_XEN = $(if $(subst n,,$(CONFIG_XEN)),n,y) > > include ../config-host.mak > include config-devices.mak > @@ -207,6 +208,8 @@ QEMU_CFLAGS += $(VNC_PNG_CFLAGS) > > # xen support > obj-$(CONFIG_XEN) += xen_interfaces.o > +obj-$(CONFIG_XEN) += xen-all.o > +obj-$(CONFIG_NO_XEN) += xen-stub.o > > # xen backend driver support > obj-$(CONFIG_XEN) += xen_backend.o xen_devconfig.o > diff --git a/hw/xen.h b/hw/xen.h > index 780dcf7..183cbb5 100644 > --- a/hw/xen.h > +++ b/hw/xen.h > @@ -18,4 +18,17 @@ enum xen_mode { > extern uint32_t xen_domid; > extern enum xen_mode xen_mode; > > +extern int xen_allowed; > + > +static inline int xen_enabled(void) > +{ > +#ifdef CONFIG_XEN > + return xen_allowed; > +#else > + return 0; > +#endif > +} > + > +int xen_init(int smp_cpus); > + > #endif /* QEMU_HW_XEN_H */ > diff --git a/vl.c b/vl.c > index 626f4e1..38fa281 100644 > --- a/vl.c > +++ b/vl.c > @@ -259,6 +259,7 @@ static NotifierList machine_init_done_notifiers > > static int tcg_allowed = 1; > int kvm_allowed = 0; > +int xen_allowed = 0; > uint32_t xen_domid; > enum xen_mode xen_mode = XEN_EMULATE; > > @@ -1836,6 +1837,7 @@ static struct { > int *allowed; > } accel_list[] = { > { "tcg", "tcg", tcg_available, tcg_init,&tcg_allowed }, > + { "xen", "Xen", xen_available, xen_init,&xen_allowed }, > { "kvm", "KVM", kvm_available, kvm_init,&kvm_allowed }, > }; > > diff --git a/xen-all.c b/xen-all.c > new file mode 100644 > index 0000000..29c8002 > --- /dev/null > +++ b/xen-all.c > @@ -0,0 +1,29 @@ > +/* > + * Copyright (C) 2010 Citrix Ltd. > + * > + * This work is licensed under the terms of the GNU GPL, version 2. See > + * the COPYING file in the top-level directory. > + * > + */ > + > +#include "config.h" > + > +#include "hw/xen_common.h" > +#include "hw/xen_backend.h" > +#include "hw/xen_redirect.h" > + > +/* Initialise Xen */ > + > +int xen_init(int smp_cpus) > +{ > + if (xen_mode == XEN_EMULATE) > + xen_mode = XEN_ATTACH; >Missing braces. Regards, Anthony Liguori> + xen_interfaces_init(); > + xen_xc = xc_interface_open(0, 0, 0); > + if (xen_xc == XC_HANDLER_INITIAL_VALUE) { > + xen_be_printf(NULL, 0, "can''t open xen interface\n"); > + return -1; > + } > + > + return 0; > +} > diff --git a/xen-stub.c b/xen-stub.c > new file mode 100644 > index 0000000..0fa9c51 > --- /dev/null > +++ b/xen-stub.c > @@ -0,0 +1,17 @@ > +/* > + * Copyright (C) 2010 Citrix Ltd. > + * > + * This work is licensed under the terms of the GNU GPL, version 2. See > + * the COPYING file in the top-level directory. > + * > + */ > + > +#include "config.h" > + > +#include "qemu-common.h" > +#include "hw/xen.h" > + > +int xen_init(int smp_cpus) > +{ > + return -ENOSYS; > +} >_______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Anthony Liguori
2011-Jan-26 23:01 UTC
[Xen-devel] Re: [Qemu-devel] [PATCH V9 07/16] xen: Add the Xen platform pci device
On 01/25/2011 08:29 AM, anthony.perard@citrix.com wrote:> From: Steven Smith<ssmith@xensource.com> > > Introduce a new emulated PCI device, specific to fully virtualized Xen > guests. The device is necessary for PV on HVM drivers to work. > > Signed-off-by: Steven Smith<ssmith@xensource.com> > Signed-off-by: Anthony PERARD<anthony.perard@citrix.com> > Signed-off-by: Stefano Stabellini<stefano.stabellini@eu.citrix.com> > --- > Makefile.target | 1 + > hw/hw.h | 3 + > hw/pci_ids.h | 2 + > hw/xen_machine_fv.c | 3 + > hw/xen_platform.c | 427 +++++++++++++++++++++++++++++++++++++++++++++++++++ > hw/xen_platform.h | 8 + > 6 files changed, 444 insertions(+), 0 deletions(-) > create mode 100644 hw/xen_platform.c > create mode 100644 hw/xen_platform.h > > diff --git a/Makefile.target b/Makefile.target > index 8b5fe36..8126da9 100644 > --- a/Makefile.target > +++ b/Makefile.target > @@ -218,6 +218,7 @@ obj-i386-$(CONFIG_XEN) += xen_machine_pv.o xen_domainbuild.o > > # xen full virtualized machine > obj-i386-$(CONFIG_XEN) += xen_machine_fv.o > +obj-i386-$(CONFIG_XEN) += xen_platform.o > > # Inter-VM PCI shared memory > obj-$(CONFIG_KVM) += ivshmem.o > diff --git a/hw/hw.h b/hw/hw.h > index dd993de..298df31 100644 > --- a/hw/hw.h > +++ b/hw/hw.h > @@ -672,6 +672,9 @@ extern const VMStateDescription vmstate_i2c_slave; > #define VMSTATE_INT32_LE(_f, _s) \ > VMSTATE_SINGLE(_f, _s, 0, vmstate_info_int32_le, int32_t) > > +#define VMSTATE_UINT8_TEST(_f, _s, _t) \ > + VMSTATE_SINGLE_TEST(_f, _s, _t, 0, vmstate_info_uint8, uint8_t) > + > #define VMSTATE_UINT16_TEST(_f, _s, _t) \ > VMSTATE_SINGLE_TEST(_f, _s, _t, 0, vmstate_info_uint16, uint16_t) > > diff --git a/hw/pci_ids.h b/hw/pci_ids.h > index ea3418c..6e9eabc 100644 > --- a/hw/pci_ids.h > +++ b/hw/pci_ids.h > @@ -108,3 +108,5 @@ > #define PCI_DEVICE_ID_INTEL_82371AB 0x7111 > #define PCI_DEVICE_ID_INTEL_82371AB_2 0x7112 > #define PCI_DEVICE_ID_INTEL_82371AB_3 0x7113 > + > +#define PCI_VENDOR_ID_XENSOURCE 0x5853 > diff --git a/hw/xen_machine_fv.c b/hw/xen_machine_fv.c > index 657c1e8..2f51625 100644 > --- a/hw/xen_machine_fv.c > +++ b/hw/xen_machine_fv.c > @@ -36,6 +36,7 @@ > > #include "xen_common.h" > #include "xen/hvm/hvm_info_table.h" > +#include "xen_platform.h" > > #define MAX_IDE_BUS 2 > > @@ -89,6 +90,8 @@ static void xen_init_fv(ram_addr_t ram_size, > > pc_vga_init(pci_bus); > > + pci_xen_platform_init(pci_bus); > + > /* init basic PC hardware */ > pc_basic_device_init(isa_irq,&floppy_controller,&rtc_state); > > diff --git a/hw/xen_platform.c b/hw/xen_platform.c > new file mode 100644 > index 0000000..abfcdb7 > --- /dev/null > +++ b/hw/xen_platform.c > @@ -0,0 +1,427 @@ > +/* > + * XEN platform pci device, formerly known as the event channel device > + * > + * Copyright (c) 2003-2004 Intel Corp. > + * Copyright (c) 2006 XenSource > + * > + * Permission is hereby granted, free of charge, to any person obtaining a copy > + * of this software and associated documentation files (the "Software"), to deal > + * in the Software without restriction, including without limitation the rights > + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell > + * copies of the Software, and to permit persons to whom the Software is > + * furnished to do so, subject to the following conditions: > + * > + * The above copyright notice and this permission notice shall be included in > + * all copies or substantial portions of the Software. > + * > + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR > + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, > + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL > + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER > + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, > + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN > + * THE SOFTWARE. > + */ > + > +#include "hw.h" > +#include "pc.h" > +#include "pci.h" > +#include "irq.h" > +#include "xen_common.h" > +#include "net.h" > +#include "xen_platform.h" > +#include "xen_backend.h" > +#include "qemu-log.h" > +#include "rwhandler.h" > + > +#include<assert.h> > +#include<xenguest.h> > + > +//#define DEBUG_PLATFORM > + > +#ifdef DEBUG_PLATFORM > +#define DPRINTF(fmt, ...) do { \ > + fprintf(stderr, "xen_platform: " fmt, ## __VA_ARGS__); \ > +} while (0) > +#else > +#define DPRINTF(fmt, ...) do { } while (0) > +#endif > + > +#define PFFLAG_ROM_LOCK 1 /* Sets whether ROM memory area is RW or RO */ > + > +typedef struct PCIXenPlatformState { > + PCIDevice pci_dev; > + uint8_t flags; /* used only for version_id == 2 */ > + int drivers_blacklisted; > + uint16_t driver_product_version; > + > + /* Log from guest drivers */ > + int throttling_disabled; > + char log_buffer[4096]; > + int log_buffer_off; > +} PCIXenPlatformState; > + > +#define XEN_PLATFORM_IOPORT 0x10 > + > +/* We throttle access to dom0 syslog, to avoid DOS attacks. This is > + modelled as a token bucket, with one token for every byte of log. > + The bucket size is 128KB (->1024 lines of 128 bytes each) and > + refills at 256B/s. It starts full. The guest is blocked if no > + tokens are available when it tries to generate a log message. */ > +#define BUCKET_MAX_SIZE (128*1024) > +#define BUCKET_FILL_RATE 256 > + > +static void throttle(PCIXenPlatformState *s, unsigned count) > +{ > + static unsigned available; > + static int64_t last_refill; > + static int started; > + static int warned; > + > + int64_t waiting_for, now; > + int64_t delay; > + > + if (s->throttling_disabled) { > + return; > + } > + > + if (!started) { > + last_refill = qemu_get_clock_ns(rt_clock); > + available = BUCKET_MAX_SIZE; > + started = 1; > + } > + > + if (count> BUCKET_MAX_SIZE) { > + DPRINTF("tried to get %u tokens, but bucket size is %u\n", > + BUCKET_MAX_SIZE, count); > + exit(1); > + } > + > + if (available< count) { > + /* The bucket is empty. Refill it */ > + > + /* When will it be full enough to handle this request? */ > + delay = muldiv64(count - available, 1000000000, BUCKET_FILL_RATE); > + > + waiting_for = last_refill + delay; > + > + /* How long do we have to wait? (might be negative) */ > + waiting_for = waiting_for - qemu_get_clock_ns(rt_clock); > + > + /* Wait for it. */ > + if (waiting_for> 0) { > + struct timespec ts; > + if (!warned) { > + DPRINTF("throttling guest access to syslog"); > + warned = 1; > + } > + ts.tv_sec = waiting_for / 1000000000; > + ts.tv_nsec = waiting_for % 1000000000; > + while (nanosleep(&ts,&ts)< 0&& errno == EINTR) { > + } > + } > + > + /* Refill */ > + now = qemu_get_clock_ns(rt_clock); > + available += muldiv64(now - last_refill, > + BUCKET_FILL_RATE, > + 1000000000); > + if (available> BUCKET_MAX_SIZE) { > + available = BUCKET_MAX_SIZE; > + } > + last_refill = now; > + } > + > + assert(available>= count); > + > + available -= count; > +} > + > +/* Send bytes to syslog */ > +static void log_writeb(PCIXenPlatformState *s, char val) > +{ > + if (val == ''\n'' || s->log_buffer_off == sizeof(s->log_buffer) - 1) { > + /* Flush buffer */ > + s->log_buffer[s->log_buffer_off] = 0; > + throttle(s, s->log_buffer_off); > + DPRINTF("%s\n", s->log_buffer); > + s->log_buffer_off = 0; > + } else { > + s->log_buffer[s->log_buffer_off++] = val; > + } > +} >This doesn''t belong in qemu. Just pipe it out to a character device and you can direct that to whatever you want with whatever type of throttling you see fit. Hard coding a policy like this in qemu is wrong.> + > +/* Xen Platform, Fixed IOPort */ > + > +static void platform_fixed_ioport_writew(void *opaque, uint32_t addr, uint32_t val) > +{ > + PCIXenPlatformState *s = opaque; > + > + switch (addr - XEN_PLATFORM_IOPORT) { > + case 0: > + /* TODO: */ > + /* Unplug devices. Value is a bitmask of which devices to > + unplug, with bit 0 the IDE devices, bit 1 the network > + devices, and bit 2 the non-primary-master IDE devices. */ > + break; > + case 2: > + switch (val) { > + case 1: > + DPRINTF("Citrix Windows PV drivers loaded in guest\n"); > + break; > + case 0: > + DPRINTF("Guest claimed to be running PV product 0?\n"); > + break; > + default: > + DPRINTF("Unknown PV product %d loaded in guest\n", val); > + break; > + } > + s->driver_product_version = val; > + break; > + } > +} > + > +static void platform_fixed_ioport_writel(void *opaque, uint32_t addr, > + uint32_t val) > +{ > + switch (addr - XEN_PLATFORM_IOPORT) { > + case 0: > + /* PV driver version */ > + break; > + } > +} > + > +static void platform_fixed_ioport_writeb(void *opaque, uint32_t addr, uint32_t val) > +{ > + PCIXenPlatformState *s = opaque; > + > + switch (addr - XEN_PLATFORM_IOPORT) { > + case 0: /* Platform flags */ { > + hvmmem_type_t mem_type = (val& PFFLAG_ROM_LOCK) ? > + HVMMEM_ram_ro : HVMMEM_ram_rw; > + if (xc_hvm_set_mem_type(xen_xc, xen_domid, mem_type, 0xc0, 0x40)) { > + DPRINTF("unable to change ro/rw state of ROM memory area!\n"); > + } else { > + s->flags = val& PFFLAG_ROM_LOCK; > + DPRINTF("changed ro/rw state of ROM memory area. now is %s state.\n", > + (mem_type == HVMMEM_ram_ro ? "ro":"rw")); > + } > + break; > + } > + case 2: > + log_writeb(s, val); > + break; > + } > +} > + > +static uint32_t platform_fixed_ioport_readw(void *opaque, uint32_t addr) > +{ > + PCIXenPlatformState *s = opaque; > + > + switch (addr - XEN_PLATFORM_IOPORT) { > + case 0: > + if (s->drivers_blacklisted) { > + /* The drivers will recognise this magic number and refuse > + * to do anything. */ > + return 0xd249; > + } else { > + /* Magic value so that you can identify the interface. */ > + return 0x49d2; > + } > + default: > + return 0xffff; > + } > +} > + > +static uint32_t platform_fixed_ioport_readb(void *opaque, uint32_t addr) > +{ > + PCIXenPlatformState *s = opaque; > + > + switch (addr - XEN_PLATFORM_IOPORT) { > + case 0: > + /* Platform flags */ > + return s->flags; > + case 2: > + /* Version number */ > + return 1; > + default: > + return 0xff; > + } > +} > + > +static void platform_fixed_ioport_reset(void *opaque) > +{ > + PCIXenPlatformState *s = opaque; > + > + platform_fixed_ioport_writeb(s, XEN_PLATFORM_IOPORT, 0); > +} > + > +static void platform_fixed_ioport_init(PCIXenPlatformState* s) > +{ > + register_ioport_write(XEN_PLATFORM_IOPORT, 16, 4, platform_fixed_ioport_writel, s); > + register_ioport_write(XEN_PLATFORM_IOPORT, 16, 2, platform_fixed_ioport_writew, s); > + register_ioport_write(XEN_PLATFORM_IOPORT, 16, 1, platform_fixed_ioport_writeb, s); > + register_ioport_read(XEN_PLATFORM_IOPORT, 16, 2, platform_fixed_ioport_readw, s); > + register_ioport_read(XEN_PLATFORM_IOPORT, 16, 1, platform_fixed_ioport_readb, s); > +} > + > +/* Xen Platform PCI Device */ > + > +static uint32_t xen_platform_ioport_readb(void *opaque, uint32_t addr) > +{ > + addr&= 0xff; > + > + if (addr == 0) { > + return platform_fixed_ioport_readb(opaque, XEN_PLATFORM_IOPORT); > + } else { > + return ~0u; > + } > +} > + > +static void xen_platform_ioport_writeb(void *opaque, uint32_t addr, uint32_t val) > +{ > + PCIXenPlatformState *s = opaque; > + > + addr&= 0xff; > + val&= 0xff; > + > + switch (addr) { > + case 0: /* Platform flags */ > + platform_fixed_ioport_writeb(opaque, XEN_PLATFORM_IOPORT, val); > + break; > + case 8: > + log_writeb(s, val); > + break; > + default: > + break; > + } > +} > + > +static void platform_ioport_map(PCIDevice *pci_dev, int region_num, pcibus_t addr, pcibus_t size, int type) > +{ > + PCIXenPlatformState *d = DO_UPCAST(PCIXenPlatformState, pci_dev, pci_dev); > + > + register_ioport_write(addr, size, 1, xen_platform_ioport_writeb, d); > + register_ioport_read(addr, size, 1, xen_platform_ioport_readb, d); > +} > + > +static uint32_t platform_mmio_read(ReadWriteHandler *handler, pcibus_t addr, int len) > +{ > + DPRINTF("Warning: attempted read from physical address " > + "0x" TARGET_FMT_plx " in xen platform mmio space\n", addr); > + > + return 0; > +} > + > +static void platform_mmio_write(ReadWriteHandler *handler, pcibus_t addr, > + uint32_t val, int len) > +{ > + DPRINTF("Warning: attempted write of 0x%x to physical " > + "address 0x" TARGET_FMT_plx " in xen platform mmio space\n", > + val, addr); > +} > + > +static ReadWriteHandler platform_mmio_handler = { > + .read =&platform_mmio_read, > + .write =&platform_mmio_write, > +}; > + > +static void platform_mmio_map(PCIDevice *d, int region_num, > + pcibus_t addr, pcibus_t size, int type) > +{ > + int mmio_io_addr; > + > + mmio_io_addr = cpu_register_io_memory_simple(&platform_mmio_handler, > + DEVICE_NATIVE_ENDIAN); > + > + cpu_register_physical_memory(addr, size, mmio_io_addr); > +} > + > +static int xen_platform_post_load(void *opaque, int version_id) > +{ > + PCIXenPlatformState *s = opaque; > + > + platform_fixed_ioport_writeb(s, XEN_PLATFORM_IOPORT, s->flags); > + > + return 0; > +} > + > +static const VMStateDescription vmstate_xen_platform = { > + .name = "platform", > + .version_id = 4, > + .minimum_version_id = 4, > + .minimum_version_id_old = 4, > + .post_load = xen_platform_post_load, > + .fields = (VMStateField []) { > + VMSTATE_PCI_DEVICE(pci_dev, PCIXenPlatformState), > + VMSTATE_UINT8(flags, PCIXenPlatformState), > + VMSTATE_END_OF_LIST() > + } > +}; > + > +static int xen_platform_initfn(PCIDevice *dev) > +{ > + PCIXenPlatformState *d = DO_UPCAST(PCIXenPlatformState, pci_dev, dev); > + uint8_t *pci_conf; > + > + pci_conf = d->pci_dev.config; > + > + pci_config_set_vendor_id(pci_conf, PCI_VENDOR_ID_XENSOURCE); > + pci_config_set_device_id(pci_conf, 0x0001); > + pci_set_word(pci_conf + PCI_COMMAND, PCI_COMMAND_IO | PCI_COMMAND_MEMORY); > + > + pci_config_set_revision(pci_conf, 1); > + pci_config_set_prog_interface(pci_conf, 0); > + > + pci_config_set_class(pci_conf, PCI_CLASS_OTHERS<< 8 | 0x80); > + > + pci_conf[PCI_INTERRUPT_PIN] = 1; > + > + /* Microsoft WHQL requires non-zero subsystem IDs. */ > + /* http://www.pcisig.com/reflector/msg02205.html. */ > + pci_set_word(pci_conf + PCI_SUBSYSTEM_VENDOR_ID, pci_conf[PCI_VENDOR_ID]); > + pci_set_word(pci_conf + PCI_SUBSYSTEM_ID, 0x0001); >The generic PCI layer handles this FWIW. Regards, Anthony Liguori> + > + pci_register_bar(&d->pci_dev, 0, 0x100, > + PCI_BASE_ADDRESS_SPACE_IO, platform_ioport_map); > + > + /* reserve 16MB mmio address for share memory*/ > + pci_register_bar(&d->pci_dev, 1, 0x1000000, > + PCI_BASE_ADDRESS_MEM_PREFETCH, platform_mmio_map); > + > + platform_fixed_ioport_init(d); > + > + return 0; > +} > + > +static void platform_reset(DeviceState *dev) > +{ > + PCIXenPlatformState *s = DO_UPCAST(PCIXenPlatformState, pci_dev.qdev, dev); > + > + platform_fixed_ioport_reset(s); > +} > + > +void pci_xen_platform_init(PCIBus *bus) > +{ > + PCIDevice *dev; > + > + dev = pci_create(bus, -1, "xen-platform"); > + > + qdev_init_nofail(&dev->qdev); > +} > + > +static PCIDeviceInfo xen_platform_info = { > + .init = xen_platform_initfn, > + .qdev.name = "xen-platform", > + .qdev.desc = "XEN platform pci device", > + .qdev.size = sizeof(PCIXenPlatformState), > + .qdev.vmsd =&vmstate_xen_platform, > + .qdev.reset = platform_reset, > +}; > + > +static void xen_platform_register(void) > +{ > + pci_qdev_register(&xen_platform_info); > +} > + > +device_init(xen_platform_register); > diff --git a/hw/xen_platform.h b/hw/xen_platform.h > new file mode 100644 > index 0000000..574eecd > --- /dev/null > +++ b/hw/xen_platform.h > @@ -0,0 +1,8 @@ > +#ifndef XEN_PLATFORM_H > +#define XEN_PLATFORM_H > + > +#include "hw/pci.h" > + > +void pci_xen_platform_init(PCIBus *bus); > + > +#endif >_______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Anthony Liguori
2011-Jan-26 23:04 UTC
[Xen-devel] Re: [Qemu-devel] [PATCH V9 09/16] xen: add a 8259 Interrupt Controller
On 01/25/2011 08:29 AM, anthony.perard@citrix.com wrote:> From: Anthony PERARD<anthony.perard@citrix.com> > > Introduce a 8259 Interrupt Controller for target-xen; every set_irq > call makes a Xen hypercall. > > Signed-off-by: Anthony PERARD<anthony.perard@citrix.com> > Signed-off-by: Stefano Stabellini<stefano.stabellini@eu.citrix.com> > --- > hw/xen_common.h | 2 ++ > hw/xen_machine_fv.c | 5 ++--- > xen-all.c | 12 ++++++++++++ > 3 files changed, 16 insertions(+), 3 deletions(-) > > diff --git a/hw/xen_common.h b/hw/xen_common.h > index b98d107..0cc935a 100644 > --- a/hw/xen_common.h > +++ b/hw/xen_common.h > @@ -42,4 +42,6 @@ static inline int xc_fd(xc_interface *xen_xc) > } > #endif > > +qemu_irq *i8259_xen_init(void); > + > #endif /* QEMU_HW_XEN_COMMON_H */ > diff --git a/hw/xen_machine_fv.c b/hw/xen_machine_fv.c > index 2f51625..0a90312 100644 > --- a/hw/xen_machine_fv.c > +++ b/hw/xen_machine_fv.c > @@ -37,6 +37,7 @@ > #include "xen_common.h" > #include "xen/hvm/hvm_info_table.h" > #include "xen_platform.h" > +#include "xen_common.h" > > #define MAX_IDE_BUS 2 > > @@ -52,7 +53,6 @@ static void xen_init_fv(ram_addr_t ram_size, > PCIBus *pci_bus; > PCII440FXState *i440fx_state; > int piix3_devfn = -1; > - qemu_irq *cpu_irq; > qemu_irq *isa_irq; > qemu_irq *i8259; > qemu_irq *cmos_s3; > @@ -76,8 +76,7 @@ static void xen_init_fv(ram_addr_t ram_size, > env = cpu_init(cpu_model); > env->halted = 1; > > - cpu_irq = pc_allocate_cpu_irq(); > - i8259 = i8259_init(cpu_irq[0]); > + i8259 = i8259_xen_init(); > isa_irq_state = qemu_mallocz(sizeof (*isa_irq_state)); > isa_irq_state->i8259 = i8259; > > diff --git a/xen-all.c b/xen-all.c > index 8a51873..205cbc4 100644 > --- a/xen-all.c > +++ b/xen-all.c > @@ -43,6 +43,18 @@ void xen_piix_pci_write_config_client(uint32_t address, uint32_t val, int len) > } > } > > +/* i8259 */ > + > +static void i8259_set_irq(void *opaque, int irq, int level) > +{ > + xc_hvm_set_isa_irq_level(xen_xc, xen_domid, irq, level); > +} > + > +qemu_irq *i8259_xen_init(void) > +{ > + return qemu_allocate_irqs(i8259_set_irq, NULL, 16); > +} > + >I think it would make more sense to just call it a Xen interrupt controller as it''s clearly not an i8259. Xen may emulate an i8259 in the kernel but this has nothing to do with that AFAIK. Regards, Anthony Liguori> /* Initialise Xen */ > > int xen_init(int smp_cpus) >_______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Anthony Liguori
2011-Jan-26 23:07 UTC
[Xen-devel] Re: [Qemu-devel] [PATCH V9 10/16] xen: Introduce the Xen mapcache
On 01/25/2011 08:29 AM, anthony.perard@citrix.com wrote:> From: Jun Nakajima<jun.nakajima@intel.com> > > On IA32 host or IA32 PAE host, at present, generally, we can''t create > an HVM guest with more than 2G memory, because generally it''s almost > impossible for Qemu to find a large enough and consecutive virtual > address space to map an HVM guest''s whole physical address space. > The attached patch fixes this issue using dynamic mapping based on > little blocks of memory. > > Each call to qemu_get_ram_ptr makes a call to qemu_map_cache with the > lock option, so mapcache will not unmap these ram_ptr. > > Signed-off-by: Jun Nakajima<jun.nakajima@intel.com> > Signed-off-by: Anthony PERARD<anthony.perard@citrix.com> > Signed-off-by: Stefano Stabellini<stefano.stabellini@eu.citrix.com> > --- > Makefile.target | 3 + > configure | 3 + > exec.c | 40 ++++++- > hw/xen.h | 13 +++ > xen-all.c | 64 +++++++++++ > xen-mapcache-stub.c | 33 ++++++ > xen-mapcache.c | 301 +++++++++++++++++++++++++++++++++++++++++++++++++++ > xen-mapcache.h | 14 +++ > xen-stub.c | 4 + > 9 files changed, 471 insertions(+), 4 deletions(-) > create mode 100644 xen-mapcache-stub.c > create mode 100644 xen-mapcache.c > create mode 100644 xen-mapcache.h > > diff --git a/Makefile.target b/Makefile.target > index 8126da9..18b3959 100644 > --- a/Makefile.target > +++ b/Makefile.target > @@ -207,9 +207,12 @@ QEMU_CFLAGS += $(VNC_JPEG_CFLAGS) > QEMU_CFLAGS += $(VNC_PNG_CFLAGS) > > # xen support > +CONFIG_NO_XEN_MAPCACHE = $(if $(subst n,,$(CONFIG_XEN_MAPCACHE)),n,y) > obj-$(CONFIG_XEN) += xen_interfaces.o > obj-$(CONFIG_XEN) += xen-all.o > obj-$(CONFIG_NO_XEN) += xen-stub.o > +obj-$(CONFIG_XEN_MAPCACHE) += xen-mapcache.o > +obj-$(CONFIG_NO_XEN_MAPCACHE) += xen-mapcache-stub.o > > # xen backend driver support > obj-$(CONFIG_XEN) += xen_backend.o xen_devconfig.o > diff --git a/configure b/configure > index fde9bad..c9a13e1 100755 > --- a/configure > +++ b/configure > @@ -3069,6 +3069,9 @@ case "$target_arch2" in > echo "CONFIG_XEN=y">> $config_target_mak > echo "LIBS+=$xen_libs">> $config_target_mak > echo "CONFIG_XEN_CTRL_INTERFACE_VERSION=$xen_ctrl_version">> $config_target_mak > + if test "$cpu" = "i386" -o "$cpu" = "x86_64"; then > + echo "CONFIG_XEN_MAPCACHE=y">> $config_target_mak > + fi > fi > esac > case "$target_arch2" in > diff --git a/exec.c b/exec.c > index e950df2..3b137dc 100644 > --- a/exec.c > +++ b/exec.c > @@ -32,6 +32,7 @@ > #include "hw/qdev.h" > #include "osdep.h" > #include "kvm.h" > +#include "hw/xen.h" > #include "qemu-timer.h" > #if defined(CONFIG_USER_ONLY) > #include<qemu.h> > @@ -51,6 +52,8 @@ > #include<libutil.h> > #endif > #endif > +#else /* !CONFIG_USER_ONLY */ > +#include "xen-mapcache.h" > #endif > > //#define DEBUG_TB_INVALIDATE > @@ -2835,6 +2838,7 @@ ram_addr_t qemu_ram_alloc_from_ptr(DeviceState *dev, const char *name, > } > } > > + new_block->offset = find_ram_offset(size); > if (host) { > new_block->host = host; > } else { > @@ -2856,13 +2860,15 @@ ram_addr_t qemu_ram_alloc_from_ptr(DeviceState *dev, const char *name, > PROT_EXEC|PROT_READ|PROT_WRITE, > MAP_SHARED | MAP_ANONYMOUS, -1, 0); > #else > - new_block->host = qemu_vmalloc(size); > + if (xen_mapcache_enabled()) { > + xen_ram_alloc(new_block->offset, size); > + } else { > + new_block->host = qemu_vmalloc(size); > + } > #endif > qemu_madvise(new_block->host, size, QEMU_MADV_MERGEABLE); > } > } > - > - new_block->offset = find_ram_offset(size); > new_block->length = size; > > QLIST_INSERT_HEAD(&ram_list.blocks, new_block, next); > @@ -2903,7 +2909,11 @@ void qemu_ram_free(ram_addr_t addr) > #if defined(TARGET_S390X)&& defined(CONFIG_KVM) > munmap(block->host, block->length); > #else > - qemu_vfree(block->host); > + if (xen_mapcache_enabled()) { > + qemu_invalidate_entry(block->host); > + } else { > + qemu_vfree(block->host); > + } > #endif > } > qemu_free(block); > @@ -2929,6 +2939,15 @@ void *qemu_get_ram_ptr(ram_addr_t addr) > if (addr - block->offset< block->length) { > QLIST_REMOVE(block, next); > QLIST_INSERT_HEAD(&ram_list.blocks, block, next); > + if (xen_mapcache_enabled()) { > + /* We need to check if the requested address is in the RAM > + * because we don''t want to map the entire memory in QEMU. > + */ > + if (block->offset == 0) { > + return qemu_map_cache(addr, 0, 1); > + } > + block->host = qemu_map_cache(block->offset, block->length, 1); > + } > return block->host + (addr - block->offset); > } > } > @@ -2964,11 +2983,21 @@ int qemu_ram_addr_from_host(void *ptr, ram_addr_t *ram_addr) > uint8_t *host = ptr; > > QLIST_FOREACH(block,&ram_list.blocks, next) { > + /* This case append when the block is not mapped. */ > + if (block->host == NULL) { > + continue; > + } > if (host - block->host< block->length) { > *ram_addr = block->offset + (host - block->host); > return 0; > } > } > + > + if (xen_mapcache_enabled()) { > + *ram_addr = qemu_ram_addr_from_mapcache(ptr); > + return 0; > + } > + > return -1; > } > > @@ -3879,6 +3908,9 @@ void cpu_physical_memory_unmap(void *buffer, target_phys_addr_t len, > if (is_write) { > cpu_physical_memory_write(bounce.addr, bounce.buffer, access_len); > } > + if (xen_enabled()) { > + qemu_invalidate_entry(buffer); > + } > qemu_vfree(bounce.buffer); > bounce.buffer = NULL; > cpu_notify_map_clients(); > diff --git a/hw/xen.h b/hw/xen.h > index 338cf76..dd3fb68 100644 > --- a/hw/xen.h > +++ b/hw/xen.h > @@ -31,10 +31,23 @@ static inline int xen_enabled(void) > #endif > } > > +static inline int xen_mapcache_enabled(void) > +{ > +#ifdef CONFIG_XEN_MAPCACHE > + return xen_enabled(); > +#else > + return 0; > +#endif > +} > + > int xen_pci_slot_get_pirq(PCIDevice *pci_dev, int irq_num); > void xen_piix3_set_irq(void *opaque, int irq_num, int level); > void xen_piix_pci_write_config_client(uint32_t address, uint32_t val, int len); > > int xen_init(int smp_cpus); > > +#if defined(NEED_CPU_H)&& !defined(CONFIG_USER_ONLY) > +void xen_ram_alloc(ram_addr_t ram_addr, ram_addr_t size); > +#endif > + > #endif /* QEMU_HW_XEN_H */ > diff --git a/xen-all.c b/xen-all.c > index 205cbc4..2b9e71c 100644 > --- a/xen-all.c > +++ b/xen-all.c > @@ -13,6 +13,8 @@ > #include "hw/xen_backend.h" > #include "hw/xen_redirect.h" > > +#include "xen-mapcache.h" > + > /* Xen specific function for piix pci */ > > int xen_pci_slot_get_pirq(PCIDevice *pci_dev, int irq_num) > @@ -55,6 +57,64 @@ qemu_irq *i8259_xen_init(void) > return qemu_allocate_irqs(i8259_set_irq, NULL, 16); > } > > + > +/* Memory Ops */ > + > +static void xen_ram_init(ram_addr_t ram_size) > +{ > + RAMBlock *new_block; > + ram_addr_t below_4g_mem_size, above_4g_mem_size = 0; > + > + new_block = qemu_mallocz(sizeof (*new_block)); > + pstrcpy(new_block->idstr, sizeof (new_block->idstr), "xen.ram"); > + new_block->host = NULL; > + new_block->offset = 0; > + new_block->length = ram_size; > + > + QLIST_INSERT_HEAD(&ram_list.blocks, new_block, next); > + > + ram_list.phys_dirty = qemu_realloc(ram_list.phys_dirty, > + new_block->length>> TARGET_PAGE_BITS); > + memset(ram_list.phys_dirty + (new_block->offset>> TARGET_PAGE_BITS), > + 0xff, new_block->length>> TARGET_PAGE_BITS); > + > + if (ram_size>= 0xe0000000 ) { > + above_4g_mem_size = ram_size - 0xe0000000; > + below_4g_mem_size = 0xe0000000; > + } else { > + below_4g_mem_size = ram_size; > + } > + > + cpu_register_physical_memory(0, below_4g_mem_size, new_block->offset); > +#if TARGET_PHYS_ADDR_BITS> 32 > + if (above_4g_mem_size> 0) { > + cpu_register_physical_memory(0x100000000ULL, above_4g_mem_size, > + new_block->offset + below_4g_mem_size); > + } > +#endif > +} > + > +void xen_ram_alloc(ram_addr_t ram_addr, ram_addr_t size) > +{ > + unsigned long nr_pfn; > + xen_pfn_t *pfn_list; > + int i; > + > + nr_pfn = size>> TARGET_PAGE_BITS; > + pfn_list = qemu_malloc(sizeof (*pfn_list) * nr_pfn); > + > + for (i = 0; i< nr_pfn; i++) { > + pfn_list[i] = (ram_addr>> TARGET_PAGE_BITS) + i; > + } > + > + if (xc_domain_populate_physmap_exact(xen_xc, xen_domid, nr_pfn, 0, 0, pfn_list)) { > + hw_error("xen: failed to populate ram at %lx", ram_addr); > + } > + > + qemu_free(pfn_list); > +} > + > + > /* Initialise Xen */ > > int xen_init(int smp_cpus) > @@ -68,5 +128,9 @@ int xen_init(int smp_cpus) > return -1; > } > > + /* Init RAM management */ > + qemu_map_cache_init(); > + xen_ram_init(ram_size); > + > return 0; > } > diff --git a/xen-mapcache-stub.c b/xen-mapcache-stub.c > new file mode 100644 > index 0000000..69ce2e7 > --- /dev/null > +++ b/xen-mapcache-stub.c > @@ -0,0 +1,33 @@ > +#include "config.h" > + > +#include "exec-all.h" > +#include "qemu-common.h" > +#include "cpu-common.h" > +#include "xen-mapcache.h" > + > +int qemu_map_cache_init(void) > +{ > + return 0; > +} > + > +uint8_t *qemu_map_cache(target_phys_addr_t phys_addr, target_phys_addr_t size, uint8_t lock) > +{ > + return qemu_get_ram_ptr(phys_addr); > +} > + > +void qemu_map_cache_unlock(void *buffer) > +{ > +} > + > +ram_addr_t qemu_ram_addr_from_mapcache(void *ptr) > +{ > + return -1; > +} > + > +void qemu_invalidate_map_cache(void) > +{ > +} > + > +void qemu_invalidate_entry(uint8_t *buffer) > +{ > +} > diff --git a/xen-mapcache.c b/xen-mapcache.c > new file mode 100644 > index 0000000..3e1cca9 > --- /dev/null > +++ b/xen-mapcache.c > @@ -0,0 +1,301 @@ >Needs a copyright.> +#include "config.h" > + > +#include "hw/xen_backend.h" > +#include "blockdev.h" > + > +#include<xen/hvm/params.h> > +#include<sys/mman.h> > + > +#include "xen-mapcache.h" > + > + > +//#define MAPCACHE_DEBUG > + > +#ifdef MAPCACHE_DEBUG > +# define DPRINTF(fmt, ...) do { \ > + fprintf(stderr, "xen_mapcache: " fmt, ## __VA_ARGS__); \ > +} while (0) > +#else > +# define DPRINTF(fmt, ...) do { } while (0) > +#endif > + > +#if defined(__i386__) > +# define MAX_MCACHE_SIZE 0x40000000 /* 1GB max for x86 */ > +# define MCACHE_BUCKET_SHIFT 16 > +#elif defined(__x86_64__) > +# define MAX_MCACHE_SIZE 0x1000000000 /* 64GB max for x86_64 */ > +# define MCACHE_BUCKET_SHIFT 20 > +#endif > +#define MCACHE_BUCKET_SIZE (1UL<< MCACHE_BUCKET_SHIFT) >This is pretty awful. Set limits based on host address with, not based on i386 vs. x86_64.> +#define BITS_PER_LONG (sizeof(long) * 8) > +#define BITS_TO_LONGS(bits) (((bits) + BITS_PER_LONG - 1) / BITS_PER_LONG) > +#define DECLARE_BITMAP(name, bits) unsigned long name[BITS_TO_LONGS(bits)] > +#define test_bit(bit, map) \ > + (!!((map)[(bit) / BITS_PER_LONG]& (1UL<< ((bit) % BITS_PER_LONG)))) > + > +typedef struct MapCacheEntry { > + target_phys_addr_t paddr_index; > + uint8_t *vaddr_base; > + DECLARE_BITMAP(valid_mapping, MCACHE_BUCKET_SIZE>> XC_PAGE_SHIFT); > + uint8_t lock; > + struct MapCacheEntry *next; > +} MapCacheEntry; > + > +typedef struct MapCacheRev { > + uint8_t *vaddr_req; > + target_phys_addr_t paddr_index; > + QTAILQ_ENTRY(MapCacheRev) next; > +} MapCacheRev; > + > +typedef struct MapCache { > + MapCacheEntry *entry; > + unsigned long nr_buckets; > + QTAILQ_HEAD(map_cache_head, MapCacheRev) locked_entries; > + > + /* For most cases (>99.9%), the page address is the same. */ > + target_phys_addr_t last_address_index; > + uint8_t *last_address_vaddr; > +} MapCache; > + > +static MapCache *mapcache; > + > + > +int qemu_map_cache_init(void) > +{ > + unsigned long size; > + > + mapcache = qemu_mallocz(sizeof (MapCache)); > + > + QTAILQ_INIT(&mapcache->locked_entries); > + mapcache->last_address_index = -1; > + > + mapcache->nr_buckets = (((MAX_MCACHE_SIZE>> XC_PAGE_SHIFT) + > + (1UL<< (MCACHE_BUCKET_SHIFT - XC_PAGE_SHIFT)) - 1)>> > + (MCACHE_BUCKET_SHIFT - XC_PAGE_SHIFT)); > + > + /* > + * Use mmap() directly: lets us allocate a big hash table with no up-front > + * cost in storage space. The OS will allocate memory only for the buckets > + * that we actually use. All others will contain all zeroes. >You don''t need to use mmap. malloc() does the same thing.> + */ > + size = mapcache->nr_buckets * sizeof (MapCacheEntry); > + size = (size + XC_PAGE_SIZE - 1)& ~(XC_PAGE_SIZE - 1); > + DPRINTF("qemu_map_cache_init, nr_buckets = %lx size %lu\n", mapcache->nr_buckets, size); > + mapcache->entry = mmap(NULL, size, PROT_READ|PROT_WRITE, > + MAP_SHARED|MAP_ANON, -1, 0); > + if (mapcache->entry == MAP_FAILED) { > + return -1; > + } > + > + return 0; > +} > + > +static void qemu_remap_bucket(MapCacheEntry *entry, > + target_phys_addr_t size, > + target_phys_addr_t address_index) > +{ > + uint8_t *vaddr_base; > + xen_pfn_t *pfns; > + int *err; > + unsigned int i, j; > + target_phys_addr_t nb_pfn = size>> XC_PAGE_SHIFT; > + > + pfns = qemu_mallocz(nb_pfn * sizeof (xen_pfn_t)); > + err = qemu_mallocz(nb_pfn * sizeof (int)); > + > + if (entry->vaddr_base != NULL) { > + if (munmap(entry->vaddr_base, size) != 0) { > + perror("unmap fails"); > + exit(-1); > + } > + } > + > + for (i = 0; i< nb_pfn; i++) { > + pfns[i] = (address_index<< (MCACHE_BUCKET_SHIFT-XC_PAGE_SHIFT)) + i; > + } > + > + vaddr_base = xc_map_foreign_bulk(xen_xc, xen_domid, PROT_READ|PROT_WRITE, > + pfns, err, nb_pfn); > + if (vaddr_base == NULL) { > + perror("xc_map_foreign_bulk"); > + exit(-1); > + } > + > + entry->vaddr_base = vaddr_base; > + entry->paddr_index = address_index; > + > + for (i = 0; i< nb_pfn; i += BITS_PER_LONG) { > + unsigned long word = 0; > + if ((i + BITS_PER_LONG)> nb_pfn) { > + j = nb_pfn % BITS_PER_LONG; > + } else { > + j = BITS_PER_LONG; > + } > + while (j> 0) { > + word = (word<< 1) | !err[i + --j]; > + } > + entry->valid_mapping[i / BITS_PER_LONG] = word; > + } > + > + qemu_free(pfns); > + qemu_free(err); > +} > + > +uint8_t *qemu_map_cache(target_phys_addr_t phys_addr, target_phys_addr_t size, uint8_t lock) > +{ > + MapCacheEntry *entry, *pentry = NULL; > + target_phys_addr_t address_index = phys_addr>> MCACHE_BUCKET_SHIFT; > + target_phys_addr_t address_offset = phys_addr& (MCACHE_BUCKET_SIZE - 1); > + > + if (address_index == mapcache->last_address_index&& !lock) { > + return mapcache->last_address_vaddr + address_offset; > + } > + > + entry =&mapcache->entry[address_index % mapcache->nr_buckets]; > + > + while (entry&& entry->lock&& entry->paddr_index != address_index&& entry->vaddr_base) { > + pentry = entry; > + entry = entry->next; > + } > + if (!entry) { > + entry = qemu_mallocz(sizeof (MapCacheEntry)); > + pentry->next = entry; > + qemu_remap_bucket(entry, size ? : MCACHE_BUCKET_SIZE, address_index); > + } else if (!entry->lock) { > + if (!entry->vaddr_base || entry->paddr_index != address_index || > + !test_bit(address_offset>> XC_PAGE_SHIFT, entry->valid_mapping)) { > + qemu_remap_bucket(entry, size ? : MCACHE_BUCKET_SIZE, address_index); > + } > + } > + > + if (!test_bit(address_offset>> XC_PAGE_SHIFT, entry->valid_mapping)) { > + mapcache->last_address_index = -1; > + return NULL; > + } > + > + mapcache->last_address_index = address_index; > + mapcache->last_address_vaddr = entry->vaddr_base; > + if (lock) { > + MapCacheRev *reventry = qemu_mallocz(sizeof(MapCacheRev)); > + entry->lock++; > + reventry->vaddr_req = mapcache->last_address_vaddr + address_offset; > + reventry->paddr_index = mapcache->last_address_index; > + QTAILQ_INSERT_TAIL(&mapcache->locked_entries, reventry, next); > + } > + > + return mapcache->last_address_vaddr + address_offset; > +} > + > +ram_addr_t qemu_ram_addr_from_mapcache(void *ptr) > +{ > + MapCacheRev *reventry; > + target_phys_addr_t paddr_index; > + int found = 0; > + > + QTAILQ_FOREACH(reventry,&mapcache->locked_entries, next) { > + if (reventry->vaddr_req == ptr) { > + paddr_index = reventry->paddr_index; > + found = 1; > + break; > + } > + } > + if (!found) { > + fprintf(stderr, "qemu_ram_addr_from_mapcache, could not find %p\n", ptr); > + QTAILQ_FOREACH(reventry,&mapcache->locked_entries, next) { > + DPRINTF(" %lx -> %p is present\n", reventry->paddr_index, > + reventry->vaddr_req); > + } > + abort(); > + return 0; > + } > + > + return paddr_index<< MCACHE_BUCKET_SHIFT; > +} > + > +void qemu_invalidate_entry(uint8_t *buffer) > +{ > + MapCacheEntry *entry = NULL, *pentry = NULL; > + MapCacheRev *reventry; > + target_phys_addr_t paddr_index; > + int found = 0; > + > + if (mapcache->last_address_vaddr == buffer) { > + mapcache->last_address_index = -1; > + } > + > + QTAILQ_FOREACH(reventry,&mapcache->locked_entries, next) { > + if (reventry->vaddr_req == buffer) { > + paddr_index = reventry->paddr_index; > + found = 1; > + break; > + } > + } > + if (!found) { > + DPRINTF("qemu_invalidate_entry, could not find %p\n", buffer); > + QTAILQ_FOREACH(reventry,&mapcache->locked_entries, next) { > + DPRINTF(" %lx -> %p is present\n", reventry->paddr_index, reventry->vaddr_req); > + } > + return; > + } > + QTAILQ_REMOVE(&mapcache->locked_entries, reventry, next); > + qemu_free(reventry); > + > + entry =&mapcache->entry[paddr_index % mapcache->nr_buckets]; > + while (entry&& entry->paddr_index != paddr_index) { > + pentry = entry; > + entry = entry->next; > + } > + if (!entry) { > + DPRINTF("Trying to unmap address %p that is not in the mapcache!\n", buffer); > + return; > + } > + entry->lock--; > + if (entry->lock> 0 || pentry == NULL) { > + return; > + } > + > + pentry->next = entry->next; > + if (munmap(entry->vaddr_base, MCACHE_BUCKET_SIZE) != 0) { > + perror("unmap fails"); > + exit(-1); > + } > + qemu_free(entry); > +} > + > +void qemu_invalidate_map_cache(void) > +{ > + unsigned long i; > + MapCacheRev *reventry; > + > + qemu_aio_flush(); >This is bizarre? Why is this needed? Regards, Anthony Liguori _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Anthony Liguori
2011-Jan-26 23:10 UTC
[Xen-devel] Re: [Qemu-devel] [PATCH V9 12/16] Introduce qemu_ram_ptr_unlock.
On 01/25/2011 08:29 AM, anthony.perard@citrix.com wrote:> From: Anthony PERARD<anthony.perard@citrix.com> > > This function allows to unlock a ram_ptr give by qemu_get_ram_ptr. After > a call to qemu_ram_ptr_unlock, the pointer may be unmap from QEMU when > used with Xen. > > Signed-off-by: Anthony PERARD<anthony.perard@citrix.com> > --- > cpu-common.h | 1 + > exec.c | 10 ++++++++++ > xen-mapcache.c | 34 ++++++++++++++++++++++++++++++++++ > 3 files changed, 45 insertions(+), 0 deletions(-) > > diff --git a/cpu-common.h b/cpu-common.h > index 6d4a898..8fa6d80 100644 > --- a/cpu-common.h > +++ b/cpu-common.h > @@ -55,6 +55,7 @@ void *qemu_get_ram_ptr(ram_addr_t addr); > /* Same but slower, to use for migration, where the order of > * RAMBlocks must not change. */ > void *qemu_safe_ram_ptr(ram_addr_t addr); > +void qemu_ram_ptr_unlock(void *addr); > /* This should not be used by devices. */ > int qemu_ram_addr_from_host(void *ptr, ram_addr_t *ram_addr); > ram_addr_t qemu_ram_addr_from_host_nofail(void *ptr); > diff --git a/exec.c b/exec.c > index 3b137dc..8acf2a9 100644 > --- a/exec.c > +++ b/exec.c > @@ -2977,6 +2977,13 @@ void *qemu_safe_ram_ptr(ram_addr_t addr) > return NULL; > } > > +void qemu_ram_ptr_unlock(void *addr) > +{ > + if (xen_mapcache_enabled()) { > + qemu_map_cache_unlock(addr); > + } > +} > + >qemu_put_ram_ptr() would be a better name. Regards, Anthony Liguori> int qemu_ram_addr_from_host(void *ptr, ram_addr_t *ram_addr) > { > RAMBlock *block; > @@ -3692,6 +3699,7 @@ void cpu_physical_memory_rw(target_phys_addr_t addr, uint8_t *buf, > cpu_physical_memory_set_dirty_flags( > addr1, (0xff& ~CODE_DIRTY_FLAG)); > } > + qemu_ram_ptr_unlock(ptr); > } > } else { > if ((pd& ~TARGET_PAGE_MASK)> IO_MEM_ROM&& > @@ -3722,6 +3730,7 @@ void cpu_physical_memory_rw(target_phys_addr_t addr, uint8_t *buf, > ptr = qemu_get_ram_ptr(pd& TARGET_PAGE_MASK) + > (addr& ~TARGET_PAGE_MASK); > memcpy(buf, ptr, l); > + qemu_ram_ptr_unlock(ptr); > } > } > len -= l; > @@ -3762,6 +3771,7 @@ void cpu_physical_memory_write_rom(target_phys_addr_t addr, > /* ROM/RAM case */ > ptr = qemu_get_ram_ptr(addr1); > memcpy(ptr, buf, l); > + qemu_ram_ptr_unlock(ptr); > } > len -= l; > buf += l; > diff --git a/xen-mapcache.c b/xen-mapcache.c > index 3e1cca9..23a23f9 100644 > --- a/xen-mapcache.c > +++ b/xen-mapcache.c > @@ -187,6 +187,40 @@ uint8_t *qemu_map_cache(target_phys_addr_t phys_addr, target_phys_addr_t size, u > return mapcache->last_address_vaddr + address_offset; > } > > +void qemu_map_cache_unlock(void *buffer) > +{ > + MapCacheEntry *entry = NULL, *pentry = NULL; > + MapCacheRev *reventry; > + target_phys_addr_t paddr_index; > + int found = 0; > + > + QTAILQ_FOREACH(reventry,&mapcache->locked_entries, next) { > + if (reventry->vaddr_req == buffer) { > + paddr_index = reventry->paddr_index; > + found = 1; > + break; > + } > + } > + if (!found) { > + return; > + } > + QTAILQ_REMOVE(&mapcache->locked_entries, reventry, next); > + qemu_free(reventry); > + > + entry =&mapcache->entry[paddr_index % mapcache->nr_buckets]; > + while (entry&& entry->paddr_index != paddr_index) { > + pentry = entry; > + entry = entry->next; > + } > + if (!entry) { > + return; > + } > + entry->lock--; > + if (entry->lock> 0) { > + entry->lock--; > + } > +} > + > ram_addr_t qemu_ram_addr_from_mapcache(void *ptr) > { > MapCacheRev *reventry; >_______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Anthony Liguori
2011-Jan-26 23:11 UTC
[Xen-devel] Re: [Qemu-devel] [PATCH V9 16/16] acpi-piix4: Add Xen hypercall for sleep state.
On 01/25/2011 08:29 AM, anthony.perard@citrix.com wrote:> From: Anthony PERARD<anthony.perard@citrix.com> > > Signed-off-by: Anthony PERARD<anthony.perard@citrix.com> > --- > hw/acpi_piix4.c | 4 ++++ > hw/xen.h | 2 ++ > xen-all.c | 7 +++++++ > xen-stub.c | 4 ++++ > 4 files changed, 17 insertions(+), 0 deletions(-) > > diff --git a/hw/acpi_piix4.c b/hw/acpi_piix4.c > index 5bbc2b5..ea94bf9 100644 > --- a/hw/acpi_piix4.c > +++ b/hw/acpi_piix4.c > @@ -23,6 +23,7 @@ > #include "acpi.h" > #include "sysemu.h" > #include "range.h" > +#include "xen.h" > > //#define DEBUG > > @@ -181,6 +182,9 @@ static void pm_ioport_write(IORange *ioport, uint64_t addr, unsigned width, > if (s->cmos_s3) { > qemu_irq_raise(s->cmos_s3); > } > + if (xen_enabled()) { > + xen_set_hvm_sleep_state(); > + } >Can''t you hook into cmos_s3? Regards, Anthony Liguori _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Anthony Liguori
2011-Jan-26 23:12 UTC
[Xen-devel] Re: [Qemu-devel] [PATCH V9 15/16] xen: Set running state in xenstore.
On 01/25/2011 08:29 AM, anthony.perard@citrix.com wrote:> From: Anthony PERARD<anthony.perard@citrix.com> > > This tells to the xen management tool that the machine can begin run. > > Signed-off-by: Anthony PERARD<anthony.perard@citrix.com> > --- > xen-all.c | 27 +++++++++++++++++++++++++++ > 1 files changed, 27 insertions(+), 0 deletions(-) > > diff --git a/xen-all.c b/xen-all.c > index a0248ee..c2d37d6 100644 > --- a/xen-all.c > +++ b/xen-all.c > @@ -58,6 +58,8 @@ typedef struct XenIOState { > /* which vcpu we are serving */ > int send_vcpu; > > + struct xs_handle *xenstore; > + > Notifier exit; > } XenIOState; > > @@ -426,6 +428,21 @@ static void cpu_handle_ioreq(void *opaque) > } > } > > +static void xenstore_record_dm_state(XenIOState *s, const char *state) > +{ > + char *path = NULL; > + > + if (asprintf(&path, "/local/domain/0/device-model/%u/state", xen_domid) == -1) { > + fprintf(stderr, "out of memory recording dm state\n"); > + exit(1); > + } >asprintf() is very unportable.> + if (!xs_write(s->xenstore, XBT_NULL, path, state, strlen(state))) { > + fprintf(stderr, "error recording dm state\n"); > + exit(1); > + } > + free(path); > +} > + > static void xen_main_loop_prepare(XenIOState *state) > { > int evtchn_fd = -1; > @@ -441,6 +458,9 @@ static void xen_main_loop_prepare(XenIOState *state) > if (evtchn_fd != -1) { > qemu_set_fd_handler(evtchn_fd, cpu_handle_ioreq, NULL, state); > } > + > + /* record state running */ > + xenstore_record_dm_state(state, "running"); > } > > > @@ -459,6 +479,7 @@ static void xen_exit_notifier(Notifier *n) > XenIOState *state = container_of(n, XenIOState, exit); > > xc_evtchn_close(state->xce_handle); > + xs_daemon_close(state->xenstore); > } > > int xen_init(int smp_cpus) > @@ -484,6 +505,12 @@ int xen_init(int smp_cpus) > return -errno; > } > > + state->xenstore = xs_daemon_open(); > + if (state->xenstore == NULL) { > + perror("xen: xenstore open"); > + return -errno; > + } > + > state->exit.notify = xen_exit_notifier; > qemu_add_exit_notifier(&state->exit); > >_______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Anthony Liguori
2011-Jan-26 23:14 UTC
[Xen-devel] Re: [Qemu-devel] Re: [PATCH V9 16/16] xen: Add Xen hypercall for sleep state in the cmos_s3 callback.
On 01/26/2011 08:36 AM, anthony.perard@citrix.com wrote:> From: Anthony PERARD<anthony.perard@citrix.com> > > Signed-off-by: Anthony PERARD<anthony.perard@citrix.com> > --- > hw/xen_machine_fv.c | 11 ++++++++++- > 1 files changed, 10 insertions(+), 1 deletions(-) > > diff --git a/hw/xen_machine_fv.c b/hw/xen_machine_fv.c > index 0a90312..f48b978 100644 > --- a/hw/xen_machine_fv.c > +++ b/hw/xen_machine_fv.c > @@ -38,9 +38,18 @@ > #include "xen/hvm/hvm_info_table.h" > #include "xen_platform.h" > #include "xen_common.h" > +#include "xen_backend.h" > > #define MAX_IDE_BUS 2 > > +static void xen_cmos_set_s3_resume(void *opaque, int irq, int level) > +{ > + pc_cmos_set_s3_resume(opaque, irq, level); > + if (level) { > + xc_set_hvm_param(xen_xc, xen_domid, HVM_PARAM_ACPI_S_STATE, 3); > + } > +} > + >Ack. Regards, Anthony Liguori> static void xen_init_fv(ram_addr_t ram_size, > const char *boot_device, > const char *kernel_filename, > @@ -132,7 +141,7 @@ static void xen_init_fv(ram_addr_t ram_size, > } > > if (acpi_enabled) { > - cmos_s3 = qemu_allocate_irqs(pc_cmos_set_s3_resume, rtc_state, 1); > + cmos_s3 = qemu_allocate_irqs(xen_cmos_set_s3_resume, rtc_state, 1); > smi_irq = qemu_allocate_irqs(pc_acpi_smi_interrupt, first_cpu, 1); > piix4_pm_init(pci_bus, piix3_devfn + 3, 0xb100, > isa_reserve_irq(9), *cmos_s3, *smi_irq, 0); >_______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Stefano Stabellini
2011-Jan-27 12:03 UTC
[Xen-devel] Re: [Qemu-devel] [PATCH V9 04/16] xen: Support new libxc calls from xen unstable.
On Wed, 26 Jan 2011, Anthony Liguori wrote:> > + xen_ctrl_version=410 > > + xen=yes > > + > > + # Xen 4.0.0 > > + elif ( > > + cat> $TMPC<<EOF > > +#include<xenctrl.h> > > +#include<xs.h> > > +#include<stdint.h> > > +#include<xen/hvm/hvm_info_table.h> > > +#if !defined(HVM_MAX_VCPUS) > > +# error HVM_MAX_VCPUS not defined > > +#endif > > +int main(void) { > > + xs_daemon_open(); > > + xc_interface_open(); > > + xc_gnttab_open(); > > + xc_hvm_set_mem_type(0, 0, HVMMEM_ram_ro, 0, 0); > > + return 0; > > +} > > > > Really? There''s no VERSION #define? Can please fix this upstream so we > don''t have to do this forever.Yeah, it is a bit of a shame but there isn''t an #define VERSION in xenctrl.h. If we introduce it now, the first Xen release to have it is going to be 4.1. _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Stefano Stabellini
2011-Jan-27 12:04 UTC
[Xen-devel] Re: [Qemu-devel] [PATCH V9 05/16] xen: Add xen_machine_fv
On Wed, 26 Jan 2011, Anthony Liguori wrote:> > +static void xen_init_fv(ram_addr_t ram_size, > > + const char *boot_device, > > + const char *kernel_filename, > > + const char *kernel_cmdline, > > + const char *initrd_filename, > > + const char *cpu_model) > > +{ > > + int i; > > + ram_addr_t below_4g_mem_size, above_4g_mem_size = 0; > > + PCIBus *pci_bus; > > + PCII440FXState *i440fx_state; > > + int piix3_devfn = -1; > > + qemu_irq *cpu_irq; > > + qemu_irq *isa_irq; > > + qemu_irq *i8259; > > + qemu_irq *cmos_s3; > > + qemu_irq *smi_irq; > > + IsaIrqState *isa_irq_state; > > + DriveInfo *hd[MAX_IDE_BUS * MAX_IDE_DEVS]; > > + FDCtrl *floppy_controller; > > + BusState *idebus[MAX_IDE_BUS]; > > + ISADevice *rtc_state; > > + > > + CPUState *env; > > + > > + /* Initialize a dummy CPU */ > > + if (cpu_model == NULL) { > > +#ifdef TARGET_X86_64 > > + cpu_model = "qemu64"; > > +#else > > + cpu_model = "qemu32"; > > +#endif > > + } > > + env = cpu_init(cpu_model); > > + env->halted = 1; > > + > > + cpu_irq = pc_allocate_cpu_irq(); > > + i8259 = i8259_init(cpu_irq[0]); > > + isa_irq_state = qemu_mallocz(sizeof (*isa_irq_state)); > > + isa_irq_state->i8259 = i8259; > > + > > + isa_irq = qemu_allocate_irqs(isa_irq_handler, isa_irq_state, 24); > > + > > + pci_bus = i440fx_init(&i440fx_state,&piix3_devfn, isa_irq, ram_size); > > + isa_bus_irqs(isa_irq); > > + > > + pc_register_ferr_irq(isa_reserve_irq(13)); > > + > > + pc_vga_init(pci_bus); > > + > > + /* init basic PC hardware */ > > + pc_basic_device_init(isa_irq,&floppy_controller,&rtc_state); > > + > > + for (i = 0; i< nb_nics; i++) { > > + NICInfo *nd =&nd_table[i]; > > + > > + if (nd->model&& strcmp(nd->model, "ne2k_isa") == 0) > > + pc_init_ne2k_isa(nd); > > + else > > + pci_nic_init_nofail(nd, "e1000", NULL); > > + } > > + > > + if (drive_get_max_bus(IF_IDE)>= MAX_IDE_BUS) { > > + fprintf(stderr, "qemu: too many IDE bus\n"); > > + exit(1); > > + } > > + > > + for (i = 0; i< MAX_IDE_BUS * MAX_IDE_DEVS; i++) { > > + hd[i] = drive_get(IF_IDE, i / MAX_IDE_DEVS, i % MAX_IDE_DEVS); > > + } > > + > > + PCIDevice *dev = pci_piix3_ide_init(pci_bus, hd, piix3_devfn + 1); > > + idebus[0] = qdev_get_child_bus(&dev->qdev, "ide.0"); > > + idebus[1] = qdev_get_child_bus(&dev->qdev, "ide.1"); > > + > > + audio_init(isa_irq, pci_bus); > > + > > + if (ram_size>= 0xe0000000) { > > + above_4g_mem_size = ram_size - 0xe0000000; > > + below_4g_mem_size = 0xe0000000; > > + } else { > > + below_4g_mem_size = ram_size; > > + } > > + pc_cmos_init(below_4g_mem_size, above_4g_mem_size, boot_device, > > + idebus[0], idebus[1], floppy_controller, rtc_state); > > + > > + if (usb_enabled) { > > + usb_uhci_piix3_init(pci_bus, piix3_devfn + 2); > > + } > > + > > + if (acpi_enabled) { > > + cmos_s3 = qemu_allocate_irqs(pc_cmos_set_s3_resume, rtc_state, 1); > > + smi_irq = qemu_allocate_irqs(pc_acpi_smi_interrupt, first_cpu, 1); > > + piix4_pm_init(pci_bus, piix3_devfn + 3, 0xb100, > > + isa_reserve_irq(9), *cmos_s3, *smi_irq, 0); > > + } > > + > > + if (i440fx_state) { > > + i440fx_init_memory_mappings(i440fx_state); > > + } > > + > > + pc_pci_device_init(pci_bus); > > +} > > > > It''s not obvious to me why you can''t make use of most of the normal pc > code here.I think we could, but we would need to add few "if (xen_available())". _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Stefano Stabellini
2011-Jan-27 12:04 UTC
[Xen-devel] Re: [Qemu-devel] [PATCH V9 10/16] xen: Introduce the Xen mapcache
On Wed, 26 Jan 2011, Anthony Liguori wrote:> > +#ifdef MAPCACHE_DEBUG > > +# define DPRINTF(fmt, ...) do { \ > > + fprintf(stderr, "xen_mapcache: " fmt, ## __VA_ARGS__); \ > > +} while (0) > > +#else > > +# define DPRINTF(fmt, ...) do { } while (0) > > +#endif > > + > > +#if defined(__i386__) > > +# define MAX_MCACHE_SIZE 0x40000000 /* 1GB max for x86 */ > > +# define MCACHE_BUCKET_SHIFT 16 > > +#elif defined(__x86_64__) > > +# define MAX_MCACHE_SIZE 0x1000000000 /* 64GB max for x86_64 */ > > +# define MCACHE_BUCKET_SHIFT 20 > > +#endif > > +#define MCACHE_BUCKET_SIZE (1UL<< MCACHE_BUCKET_SHIFT) > > > > This is pretty awful. Set limits based on host address with, not based > on i386 vs. x86_64.Good point, actually we found a bug recently because of this. We should choose the mapcache size depending on RLIMIT_AS. _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Keir Fraser
2011-Jan-27 12:16 UTC
Re: [Xen-devel] Re: [Qemu-devel] [PATCH V9 04/16] xen: Support new libxc calls from xen unstable.
On 27/01/2011 12:03, "Stefano Stabellini" <stefano.stabellini@eu.citrix.com> wrote:>> Really? There''s no VERSION #define? Can please fix this upstream so we >> don''t have to do this forever. > > Yeah, it is a bit of a shame but there isn''t an #define VERSION in > xenctrl.h. > If we introduce it now, the first Xen release to have it is going to be > 4.1.We can add it for 4.1.0 and 4.0.2. Really that covers everyone who''ll want to build newly upstreamed qemu bits. Gracefully failing to configure in the absence of the new define would be quite acceptable imo. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Stefano Stabellini
2011-Jan-27 12:21 UTC
Re: [Xen-devel] Re: [Qemu-devel] [PATCH V9 04/16] xen: Support new libxc calls from xen unstable.
On Thu, 27 Jan 2011, Keir Fraser wrote:> On 27/01/2011 12:03, "Stefano Stabellini" <stefano.stabellini@eu.citrix.com> > wrote: > > >> Really? There''s no VERSION #define? Can please fix this upstream so we > >> don''t have to do this forever. > > > > Yeah, it is a bit of a shame but there isn''t an #define VERSION in > > xenctrl.h. > > If we introduce it now, the first Xen release to have it is going to be > > 4.1. > > We can add it for 4.1.0 and 4.0.2. Really that covers everyone who''ll want > to build newly upstreamed qemu bits. Gracefully failing to configure in the > absence of the new define would be quite acceptable imo.People might want to use qemu just as Xen PV backends provider, as it works now, so removing Xen support in the absence of the new define would be a regression in that case. _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Anthony PERARD
2011-Jan-27 17:19 UTC
[Xen-devel] Re: [Qemu-devel] [PATCH V9 09/16] xen: add a 8259 Interrupt Controller
On Wed, 26 Jan 2011, Anthony Liguori wrote:> On 01/25/2011 08:29 AM, anthony.perard@citrix.com wrote: > > From: Anthony PERARD<anthony.perard@citrix.com> > > > > Introduce a 8259 Interrupt Controller for target-xen; every set_irq > > call makes a Xen hypercall. > > > > Signed-off-by: Anthony PERARD<anthony.perard@citrix.com> > > Signed-off-by: Stefano Stabellini<stefano.stabellini@eu.citrix.com> > > --- > > hw/xen_common.h | 2 ++ > > hw/xen_machine_fv.c | 5 ++--- > > xen-all.c | 12 ++++++++++++ > > 3 files changed, 16 insertions(+), 3 deletions(-) > > > > diff --git a/hw/xen_common.h b/hw/xen_common.h > > index b98d107..0cc935a 100644 > > --- a/hw/xen_common.h > > +++ b/hw/xen_common.h > > @@ -42,4 +42,6 @@ static inline int xc_fd(xc_interface *xen_xc) > > } > > #endif > > > > +qemu_irq *i8259_xen_init(void); > > + > > #endif /* QEMU_HW_XEN_COMMON_H */ > > diff --git a/hw/xen_machine_fv.c b/hw/xen_machine_fv.c > > index 2f51625..0a90312 100644 > > --- a/hw/xen_machine_fv.c > > +++ b/hw/xen_machine_fv.c > > @@ -37,6 +37,7 @@ > > #include "xen_common.h" > > #include "xen/hvm/hvm_info_table.h" > > #include "xen_platform.h" > > +#include "xen_common.h" > > > > #define MAX_IDE_BUS 2 > > > > @@ -52,7 +53,6 @@ static void xen_init_fv(ram_addr_t ram_size, > > PCIBus *pci_bus; > > PCII440FXState *i440fx_state; > > int piix3_devfn = -1; > > - qemu_irq *cpu_irq; > > qemu_irq *isa_irq; > > qemu_irq *i8259; > > qemu_irq *cmos_s3; > > @@ -76,8 +76,7 @@ static void xen_init_fv(ram_addr_t ram_size, > > env = cpu_init(cpu_model); > > env->halted = 1; > > > > - cpu_irq = pc_allocate_cpu_irq(); > > - i8259 = i8259_init(cpu_irq[0]); > > + i8259 = i8259_xen_init(); > > isa_irq_state = qemu_mallocz(sizeof (*isa_irq_state)); > > isa_irq_state->i8259 = i8259; > > > > diff --git a/xen-all.c b/xen-all.c > > index 8a51873..205cbc4 100644 > > --- a/xen-all.c > > +++ b/xen-all.c > > @@ -43,6 +43,18 @@ void xen_piix_pci_write_config_client(uint32_t address, uint32_t val, int len) > > } > > } > > > > +/* i8259 */ > > + > > +static void i8259_set_irq(void *opaque, int irq, int level) > > +{ > > + xc_hvm_set_isa_irq_level(xen_xc, xen_domid, irq, level); > > +} > > + > > +qemu_irq *i8259_xen_init(void) > > +{ > > + return qemu_allocate_irqs(i8259_set_irq, NULL, 16); > > +} > > + > > > > > I think it would make more sense to just call it a Xen interrupt > controller as it''s clearly not an i8259. Xen may emulate an i8259 in > the kernel but this has nothing to do with that AFAIK. > > Regards, > > Anthony LiguoriI will do that. Thanks, -- Anthony PERARD _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Anthony PERARD
2011-Jan-27 17:24 UTC
[Xen-devel] Re: [Qemu-devel] [PATCH V9 04/16] xen: Support new libxc calls from xen unstable.
On Wed, 26 Jan 2011, Anthony Liguori wrote:> On 01/25/2011 08:29 AM, anthony.perard@citrix.com wrote: > > From: Anthony PERARD<anthony.perard@citrix.com> > > > > Update the libxenctrl calls in Qemu to use the new interface, otherwise > > Qemu wouldn''t be able to build against new versions of the library. > > > > We also check libxenctrl version in configure, from Xen 3.3.0 to Xen > > unstable. > > > > Signed-off-by: Anthony PERARD<anthony.perard@citrix.com> > > Signed-off-by: Stefano Stabellini<stefano.stabellini@eu.citrix.com> > > ---> > diff --git a/hw/xen_backend.c b/hw/xen_backend.c > > index 860b038..7e78546 100644 > > --- a/hw/xen_backend.c > > +++ b/hw/xen_backend.c > > @@ -43,7 +43,8 @@ > > /* ------------------------------------------------------------- */ > > > > /* public */ > > -int xen_xc; > > +qemu_xc_interface xen_xc = XC_HANDLER_INITIAL_VALUE; > > +qemu_xc_gnttab xen_xcg = XC_HANDLER_INITIAL_VALUE; > > > > Where ever qemu_xc_interface comes from, the typename needs to change.I can call it XCInterface, even if is not always a struct. Same for qemu_xc_gnttab and xc_evtchn.> > +/* Xen unstable */ > > +#if CONFIG_XEN_CTRL_INTERFACE_VERSION< 410 > > +typedef int qemu_xc_interface; > > > > Ah, right here :-) > > Regards,Thanks, -- Anthony PERARD _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Anthony PERARD
2011-Jan-28 15:09 UTC
Re: [Xen-devel] Re: [Qemu-devel] [PATCH V9 03/16] xen: Add a generic layer for xc calls
On Wed, Jan 26, 2011 at 22:49, Anthony Liguori <anthony@codemonkey.ws> wrote:> On 01/25/2011 08:29 AM, anthony.perard@citrix.com wrote: >> >> From: Alexander Graf<agraf@suse.de> >> >> This patch adds a generic layer for xc calls, allowing us to choose >> between the >> xenner and xen implementations at runtime. >> >> Signed-off-by: Alexander Graf<agraf@suse.de> >> Signed-off-by: Anthony PERARD<anthony.perard@citrix.com> >> --- >> hw/xen_interfaces.c | 100 >> +++++++++++++++++++++++++++++++++++++++++++++++++ >> hw/xen_interfaces.h | 104 >> +++++++++++++++++++++++++++++++++++++++++++++++++++ >> hw/xen_redirect.h | 56 +++++++++++++++++++++++++++ >> 3 files changed, 260 insertions(+), 0 deletions(-) >> create mode 100644 hw/xen_interfaces.c >> create mode 100644 hw/xen_interfaces.h >> create mode 100644 hw/xen_redirect.h >> >> diff --git a/hw/xen_interfaces.c b/hw/xen_interfaces.c >> new file mode 100644 >> index 0000000..09f40e0 >> --- /dev/null >> +++ b/hw/xen_interfaces.c >> @@ -0,0 +1,100 @@ >> > > Needs a copyright.Will put one.>> diff --git a/hw/xen_interfaces.h b/hw/xen_interfaces.h >> new file mode 100644 >> index 0000000..1086850 >> --- /dev/null >> +++ b/hw/xen_interfaces.h >> @@ -0,0 +1,104 @@ >> +#ifndef QEMU_HW_XEN_INTERFACES_H >> +#define QEMU_HW_XEN_INTERFACES_H 1 >> + >> +#include<xenctrl.h> >> +#include<xs.h> >> + >> +/* ------------------------------------------------------------- */ >> +/* xen event channel interface */ >> + >> +struct XenEvtOps { >> + int (*open)(void); >> + int (*domid)(int xce_handle, int domid); >> + int (*close)(int xce_handle); >> + int (*fd)(int xce_handle); >> + int (*notify)(int xce_handle, evtchn_port_t port); >> + evtchn_port_or_error_t (*bind_unbound_port)(int xce_handle, int >> domid); >> + evtchn_port_or_error_t (*bind_interdomain)(int xce_handle, int domid, >> + evtchn_port_t >> remote_port); >> + evtchn_port_or_error_t (*bind_virq)(int xce_handle, unsigned int >> virq); >> + int (*unbind)(int xce_handle, evtchn_port_t port); >> + evtchn_port_or_error_t (*pending)(int xce_handle); >> + int (*unmask)(int xce_handle, evtchn_port_t port); >> +}; >> +extern struct XenEvtOps xc_evtchn; >> > > typedef away the struct please.Ok, I will do that.>> diff --git a/hw/xen_redirect.h b/hw/xen_redirect.h >> new file mode 100644 >> index 0000000..6ddecf3 >> --- /dev/null >> +++ b/hw/xen_redirect.h >> @@ -0,0 +1,56 @@ >> +#ifndef QEMU_HW_XEN_REDIRECT_H >> +#define QEMU_HW_XEN_REDIRECT_H 1 >> + >> +#include "xen_interfaces.h"[...]>> + >> +/* xenstore interface */ >> +#define xs_daemon_open xs.daemon_open >> +#define xs_domain_open xs.domain_open >> +#define xs_daemon_open_readonly xs.daemon_open_readonly >> +#define xs_daemon_close xs.daemon_close > > static inline please.Because the define have the same name as the Xen function, I will have to rename all these functions, or I can just replace all calls in xen*.c files.> Regards,Thanks, -- Anthony PERARD _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Alexander Graf
2011-Jan-28 15:12 UTC
Re: [Xen-devel] Re: [Qemu-devel] [PATCH V9 03/16] xen: Add a generic layer for xc calls
On 28.01.2011, at 16:09, Anthony PERARD <anthony.perard@citrix.com> wrote:> On Wed, Jan 26, 2011 at 22:49, Anthony Liguori <anthony@codemonkey.ws> wrote: >> On 01/25/2011 08:29 AM, anthony.perard@citrix.com wrote: >>> >>> From: Alexander Graf<agraf@suse.de> >>> >>> This patch adds a generic layer for xc calls, allowing us to choose >>> between the >>> xenner and xen implementations at runtime. >>> >>> Signed-off-by: Alexander Graf<agraf@suse.de> >>> Signed-off-by: Anthony PERARD<anthony.perard@citrix.com> >>> --- >>> hw/xen_interfaces.c | 100 >>> +++++++++++++++++++++++++++++++++++++++++++++++++ >>> hw/xen_interfaces.h | 104 >>> +++++++++++++++++++++++++++++++++++++++++++++++++++ >>> hw/xen_redirect.h | 56 +++++++++++++++++++++++++++ >>> 3 files changed, 260 insertions(+), 0 deletions(-) >>> create mode 100644 hw/xen_interfaces.c >>> create mode 100644 hw/xen_interfaces.h >>> create mode 100644 hw/xen_redirect.h >>> >>> diff --git a/hw/xen_interfaces.c b/hw/xen_interfaces.c >>> new file mode 100644 >>> index 0000000..09f40e0 >>> --- /dev/null >>> +++ b/hw/xen_interfaces.c >>> @@ -0,0 +1,100 @@ >>> >> >> Needs a copyright. > > Will put one. > > >>> diff --git a/hw/xen_interfaces.h b/hw/xen_interfaces.h >>> new file mode 100644 >>> index 0000000..1086850 >>> --- /dev/null >>> +++ b/hw/xen_interfaces.h >>> @@ -0,0 +1,104 @@ >>> +#ifndef QEMU_HW_XEN_INTERFACES_H >>> +#define QEMU_HW_XEN_INTERFACES_H 1 >>> + >>> +#include<xenctrl.h> >>> +#include<xs.h> >>> + >>> +/* ------------------------------------------------------------- */ >>> +/* xen event channel interface */ >>> + >>> +struct XenEvtOps { >>> + int (*open)(void); >>> + int (*domid)(int xce_handle, int domid); >>> + int (*close)(int xce_handle); >>> + int (*fd)(int xce_handle); >>> + int (*notify)(int xce_handle, evtchn_port_t port); >>> + evtchn_port_or_error_t (*bind_unbound_port)(int xce_handle, int >>> domid); >>> + evtchn_port_or_error_t (*bind_interdomain)(int xce_handle, int domid, >>> + evtchn_port_t >>> remote_port); >>> + evtchn_port_or_error_t (*bind_virq)(int xce_handle, unsigned int >>> virq); >>> + int (*unbind)(int xce_handle, evtchn_port_t port); >>> + evtchn_port_or_error_t (*pending)(int xce_handle); >>> + int (*unmask)(int xce_handle, evtchn_port_t port); >>> +}; >>> +extern struct XenEvtOps xc_evtchn; >>> >> >> typedef away the struct please. > > Ok, I will do that. > > >>> diff --git a/hw/xen_redirect.h b/hw/xen_redirect.h >>> new file mode 100644 >>> index 0000000..6ddecf3 >>> --- /dev/null >>> +++ b/hw/xen_redirect.h >>> @@ -0,0 +1,56 @@ >>> +#ifndef QEMU_HW_XEN_REDIRECT_H >>> +#define QEMU_HW_XEN_REDIRECT_H 1 >>> + >>> +#include "xen_interfaces.h" > [...] >>> + >>> +/* xenstore interface */ >>> +#define xs_daemon_open xs.daemon_open >>> +#define xs_domain_open xs.domain_open >>> +#define xs_daemon_open_readonly xs.daemon_open_readonly >>> +#define xs_daemon_close xs.daemon_close >> >> static inline please. > > Because the define have the same name as the Xen function, I will have > to rename all these functions, or I can just replace all calls in > xen*.c files.Just replace the calls directly :) Alex> >> Regards, > > Thanks, > > -- > Anthony PERARD_______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Stefano Stabellini
2011-Jan-31 16:30 UTC
[Xen-devel] Re: [Qemu-devel] [PATCH V9 10/16] xen: Introduce the Xen mapcache
On Wed, 26 Jan 2011, Anthony Liguori wrote:> > +void qemu_invalidate_map_cache(void) > > +{ > > + unsigned long i; > > + MapCacheRev *reventry; > > + > > + qemu_aio_flush(); > > > > This is bizarre? Why is this needed? >Sorry, I forgot to reply to this question. Xen might send an IOREQ_TYPE_INVALIDATE at any time and we have to flush the mapcache in response. Of course we cannot flush the mapcache if there are any in flight AIO''s, so we have to make sure they are all completed before destroying all the mappings. Maybe there is better API to do that than calling qemu_aio_flush()? _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel