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[Xen-devel] [PATCH] libxl: add a vkbd device to HVM guests by default

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Subject: [Xen-devel] [PATCH] libxl: add a vkbd device to HVM guests by default
From: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
Date: Fri, 24 Jun 2011 17:29:50 +0100
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PV on HVM drivers can connect to the vkbd device to receive mouse and
keyboard events from Qemu. The advantage over USB is that vkbd doesn't
require frequent wakeups in Qemu.

Signed-off-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>

diff -r f17956fd6976 tools/libxl/libxl_create.c
--- a/tools/libxl/libxl_create.c        Fri Jun 17 16:10:48 2011 +0000
+++ b/tools/libxl/libxl_create.c        Fri Jun 24 16:19:29 2011 +0000
@@ -469,6 +469,7 @@ static int do_domain_create(libxl__gc *g
     if (d_config->c_info.hvm) {
         libxl_device_console console;
+        libxl_device_vkb vkb;
         ret = init_console_info(&console, 0);
         if ( ret )
@@ -476,6 +477,11 @@ static int do_domain_create(libxl__gc *g
         libxl__device_console_add(gc, domid, &console, &state);
+        memset(&vkb, 0x00, sizeof(vkb));
+        libxl_device_vkb_add(ctx, domid, &vkb);
+        libxl_device_vkb_destroy(&vkb);
         dm_info->domid = domid;
         ret = libxl__create_device_model(gc, dm_info,
                                         d_config->disks, d_config->num_disks,

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