Displaying 7 results from an estimated 7 matches for "xc_gnttab_munmap".
2013 Apr 26
14
bug in xc_gntshr_munmap?
Hi,
Header says:
/*
* Unmaps the @count pages starting at @start_address, which were mapped by a
* call to xc_gntshr_share_*. Never logs.
*/
int xc_gntshr_munmap(xc_gntshr *xcg, void *start_address, uint32_t count);
But implementation calls:
static int linux_gntshr_munmap(xc_gntshr *xcg, xc_osdep_handle h,
void *start_address, uint32_t count)
{
return
2007 Mar 19
0
[PATCH 2/3] [RFC] User-space grant table device - changes to libxc
...ap)) {
+ return NULL;
+ }
+
+ printf("Going to mmap() at index %#lx\n", map.index);
+
+ addr = mmap(NULL, PAGE_SIZE * count, prot, MAP_SHARED, xcg_handle,
+ map.index);
+ if (addr == MAP_FAILED) {
+ return NULL;
+ }
+
+ return addr;
+}
+
+int xc_gnttab_munmap(int xcg_handle,
+ void *start_address,
+ uint32_t count)
+{
+ struct ioctl_gntdev_get_offset_for_vaddr get_offset;
+ struct ioctl_gntdev_unmap_grant_ref unmap_grant;
+ int rc;
+
+ /* First, it is necessary to get the offset which was initially
u...
2012 Dec 13
3
[PATCH] xenconsoled: use grant references instead of map_foreign_range
...buffer {
char *data;
@@ -501,6 +503,17 @@ static int xs_gather(struct xs_handle *xs, const char *dir, ...)
va_end(ap);
return ret;
}
+
+static void domain_unmap_interface(struct domain *dom)
+{
+ if (dom->interface == NULL)
+ return;
+ if (xcg_handle && dom->ring_ref == -1)
+ xc_gnttab_munmap(xcg_handle, dom->interface, 1);
+ else
+ munmap(dom->interface, getpagesize());
+ dom->interface = NULL;
+}
static int domain_create_ring(struct domain *dom)
{
@@ -522,9 +535,19 @@ static int domain_create_ring(struct domain *dom)
}
free(type);
- if (ring_ref != dom->ring_re...
2013 Jan 10
10
[PATCH v2 1/2] xenconsoled: use grant references instead of map_foreign_range
...buffer {
char *data;
@@ -501,6 +503,18 @@ static int xs_gather(struct xs_handle *xs, const char *dir, ...)
va_end(ap);
return ret;
}
+
+static void domain_unmap_interface(struct domain *dom)
+{
+ if (dom->interface == NULL)
+ return;
+ if (xcg_handle && dom->ring_ref == -1)
+ xc_gnttab_munmap(xcg_handle, dom->interface, 1);
+ else
+ munmap(dom->interface, getpagesize());
+ dom->interface = NULL;
+ dom->ring_ref = -1;
+}
static int domain_create_ring(struct domain *dom)
{
@@ -522,9 +536,19 @@ static int domain_create_ring(struct domain *dom)
}
free(type);
- if (ri...
2010 Aug 12
59
[PATCH 00/15] RFC xen device model support
Hi all,
this is the long awaited patch series to add xen device model support in
qemu; the main author is Anthony Perard.
Developing this series we tried to come up with the cleanest possible
solution from the qemu point of view, limiting the amount of changes to
common code as much as possible. The end result still requires a couple
of hooks in piix_pci but overall the impact should be very
2013 Jul 15
6
[PATCH 0 of 6 RESEND v2] blktap3/sring: shared ring between tapdisk and the front-end
This patch series introduces the shared ring used by the front-end to pass
request descriptors to tapdisk, as well as responses from tapdisk to the
front-end. Requests from this ring end up in tapdisk''s standard request queue.
When the tapback daemon detects that the front-end tries to connect to the
back-end, it spawns a tapdisk and tells it to connect to the shared ring. The
shared
2012 Jan 25
26
[PATCH v4 00/23] Xenstore stub domain
Changes from v3:
- mini-os configuration files moved into stubdom/
- mini-os extra console support now a config option
- Fewer #ifdefs
- grant table setup uses hypercall bounce
- Xenstore stub domain syslog support re-enabled
Changes from v2:
- configuration support added to mini-os build system
- add mini-os support for conditionally compiling frontends, xenbus
-