Stefano Stabellini
2009-Jun-11 16:06 UTC
[Xen-devel] implement support for secondary consoles in the console backend
This patch adds support for secondary consoles in the console backend.
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
---
diff --git a/hw/xen_console.c b/hw/xen_console.c
index 27f809d..0d8f654 100644
--- a/hw/xen_console.c
+++ b/hw/xen_console.c
@@ -185,7 +185,10 @@ static int con_init(struct XenDevice *xendev)
/* setup */
dom = xs_get_domain_path(xenstore, con->xendev.dom);
- snprintf(con->console, sizeof(con->console), "%s/console",
dom);
+ if (!xendev->dev)
+ snprintf(con->console, sizeof(con->console),
"%s/console", dom);
+ else
+ snprintf(con->console, sizeof(con->console),
"%s/device/console/%d", dom, xendev->dev);
free(dom);
type = xenstore_read_str(con->console, "type");
@@ -215,10 +218,15 @@ static int con_connect(struct XenDevice *xendev)
if (xenstore_read_int(con->console, "limit", &limit) == 0)
con->buffer.max_capacity = limit;
- con->sring = xc_map_foreign_range(xen_xc, con->xendev.dom,
- XC_PAGE_SIZE,
- PROT_READ|PROT_WRITE,
- con->ring_ref);
+ if (!xendev->dev)
+ con->sring = xc_map_foreign_range(xen_xc, con->xendev.dom,
+ XC_PAGE_SIZE,
+ PROT_READ|PROT_WRITE,
+ con->ring_ref);
+ else
+ con->sring = xc_gnttab_map_grant_ref(xendev->gnttabdev,
con->xendev.dom,
+ con->ring_ref,
+ PROT_READ|PROT_WRITE);
if (!con->sring)
return -1;
@@ -244,7 +252,10 @@ static void con_disconnect(struct XenDevice *xendev)
xen_be_unbind_evtchn(&con->xendev);
if (con->sring) {
- munmap(con->sring, XC_PAGE_SIZE);
+ if (!xendev->dev)
+ munmap(con->sring, XC_PAGE_SIZE);
+ else
+ xc_gnttab_munmap(xendev->gnttabdev, con->sring, 1);
con->sring = NULL;
}
}
@@ -262,9 +273,10 @@ static void con_event(struct XenDevice *xendev)
struct XenDevOps xen_console_ops = {
.size = sizeof(struct XenConsole),
- .flags = DEVOPS_FLAG_IGNORE_STATE,
+ .flags = DEVOPS_FLAG_IGNORE_STATE|DEVOPS_FLAG_NEED_GNTDEV,
.init = con_init,
.connect = con_connect,
.event = con_event,
.disconnect = con_disconnect,
};
+
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Gerd Hoffmann
2009-Jun-12 08:33 UTC
[Xen-devel] Re: [Qemu-devel] implement support for secondary consoles in the console backend
On 06/11/09 18:06, Stefano Stabellini wrote:> This patch adds support for secondary consoles in the console backend.Looks good to me. Acked-by: Gerd Hoffmann <kraxel@redhat.com> cheers, Gerd _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel