[Xen-changelog] [xen-unstable] libxl: Add a vkbd frontend/backend pair for HVM guests

[Xen patchbot-unstable <patchbot@xxxxxxx>]

# HG changeset patch
# User Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
# Date 1321978788 0
# Node ID b21b6c91c1f4f44523c0d401100a8cd9498fa514
# Parent  99a567be1978823ba630ba8bd4f5927a857b9599
libxl: Add a vkbd frontend/backend pair for HVM guests

Linux PV on HVM guests can use vkbd, so add a vkbd frontend/backend
pair for HVM guests by default.  It is useful because it doesn't
require frequent qemu wakeups as the usb keyboard/mouse does.

Signed-off-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
Committed-by: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
---


diff -r 99a567be1978 -r b21b6c91c1f4 tools/libxl/libxl_create.c
--- a/tools/libxl/libxl_create.c        Tue Nov 22 16:19:11 2011 +0000
+++ b/tools/libxl/libxl_create.c        Tue Nov 22 16:19:48 2011 +0000
@@ -545,6 +545,7 @@
     case LIBXL_DOMAIN_TYPE_HVM:
     {
         libxl_device_console console;
+        libxl_device_vkb vkb;
 
         ret = init_console_info(&console, 0);
         if ( ret )
@@ -552,6 +553,12 @@
         libxl__device_console_add(gc, domid, &console, &state);
         libxl_device_console_dispose(&console);
 
+        ret = libxl_device_vkb_init(ctx, &vkb);
+        if ( ret )
+            goto error_out;
+        libxl_device_vkb_add(ctx, domid, &vkb);
+        libxl_device_vkb_dispose(&vkb);
+
         dm_info->domid = domid;
         ret = libxl__create_device_model(gc, dm_info,
                                         d_config->disks, d_config->num_disks,

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