[Xen-devel] [PATCH] libxl: use qemu-xen with PV guests by default

[Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>]

qemu-xen offers better disk performances than qemu-xen-traditional
because it supports Linux native AIO.

Signed-off-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
---
 tools/libxl/libxl_create.c |   11 ++++++++---
 1 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/tools/libxl/libxl_create.c b/tools/libxl/libxl_create.c
index 8417661..dbff02c 100644
--- a/tools/libxl/libxl_create.c
+++ b/tools/libxl/libxl_create.c
@@ -71,9 +71,14 @@ int libxl__domain_build_info_setdefault(libxl__gc *gc,
         b_info->type != LIBXL_DOMAIN_TYPE_PV)
         return ERROR_INVAL;
 
-    if (!b_info->device_model_version)
-        b_info->device_model_version =
-            LIBXL_DEVICE_MODEL_VERSION_QEMU_XEN_TRADITIONAL;
+    if (!b_info->device_model_version) {
+        if (b_info->type == LIBXL_DOMAIN_TYPE_HVM)
+            b_info->device_model_version =
+                LIBXL_DEVICE_MODEL_VERSION_QEMU_XEN_TRADITIONAL;
+        else
+            b_info->device_model_version =
+                LIBXL_DEVICE_MODEL_VERSION_QEMU_XEN;
+    }
 
     if (b_info->type == LIBXL_DOMAIN_TYPE_HVM) {
         if (!b_info->u.hvm.bios)
-- 
1.7.2.5


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