[Xen-devel] [PATCH v3 2/5] libxl: introduce LIBXL_VGA_INTERFACE_TYPE_UNDEF

[Roger Pau Monne <roger.pau@xxxxxxxxxx>]

And use it as the default value for the VGA kind. This allows libxl to set
it to the default value later on when the domain type is known. For HVM
guests the default value is LIBXL_VGA_INTERFACE_TYPE_CIRRUS while for
HVMlite the default value is LIBXL_VGA_INTERFACE_TYPE_NONE.

Signed-off-by: Roger Pau Monnà <roger.pau@xxxxxxxxxx>
---
Cc: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
Cc: Ian Campbell <ian.campbell@xxxxxxxxxx>
Cc: Wei Liu <wei.liu2@xxxxxxxxxx>
---
 tools/libxl/libxl_create.c  | 8 ++++++--
 tools/libxl/libxl_dm.c      | 6 ++++++
 tools/libxl/libxl_types.idl | 3 ++-
 3 files changed, 14 insertions(+), 3 deletions(-)

diff --git a/tools/libxl/libxl_create.c b/tools/libxl/libxl_create.c
index e491d83..61a4001 100644
--- a/tools/libxl/libxl_create.c
+++ b/tools/libxl/libxl_create.c
@@ -206,8 +206,12 @@ int libxl__domain_build_info_setdefault(libxl__gc *gc,
         if (b_info->u.hvm.mmio_hole_memkb == LIBXL_MEMKB_DEFAULT)
             b_info->u.hvm.mmio_hole_memkb = 0;
 
-        if (!b_info->u.hvm.vga.kind)
-            b_info->u.hvm.vga.kind = LIBXL_VGA_INTERFACE_TYPE_CIRRUS;
+        if (b_info->u.hvm.vga.kind == LIBXL_VGA_INTERFACE_TYPE_UNDEF) {
+            if (b_info->device_model_version == 
LIBXL_DEVICE_MODEL_VERSION_NONE)
+                b_info->u.hvm.vga.kind = LIBXL_VGA_INTERFACE_TYPE_NONE;
+            else
+                b_info->u.hvm.vga.kind = LIBXL_VGA_INTERFACE_TYPE_CIRRUS;
+        }
 
         if (!b_info->u.hvm.hdtype)
             b_info->u.hvm.hdtype = LIBXL_HDTYPE_IDE;
diff --git a/tools/libxl/libxl_dm.c b/tools/libxl/libxl_dm.c
index a088d71..9aa0cc8 100644
--- a/tools/libxl/libxl_dm.c
+++ b/tools/libxl/libxl_dm.c
@@ -531,6 +531,9 @@ static int libxl__build_device_model_args_old(libxl__gc *gc,
             break;
         case LIBXL_VGA_INTERFACE_TYPE_QXL:
             break;
+        default:
+            LOG(ERROR, "Invalid emulated video card specified");
+            return ERROR_INVAL;
         }
 
         if (b_info->u.hvm.boot) {
@@ -970,6 +973,9 @@ static int libxl__build_device_model_args_new(libxl__gc *gc,
                 GCSPRINTF("qxl-vga,vram_size_mb=%"PRIu64",ram_size_mb=%"PRIu64,
                 (b_info->video_memkb/2/1024), (b_info->video_memkb/2/1024) ) );
             break;
+        default:
+            LOG(ERROR, "Invalid emulated video card specified");
+            return ERROR_INVAL;
         }
 
         if (b_info->u.hvm.boot) {
diff --git a/tools/libxl/libxl_types.idl b/tools/libxl/libxl_types.idl
index 9ad7eba..92c95e5 100644
--- a/tools/libxl/libxl_types.idl
+++ b/tools/libxl/libxl_types.idl
@@ -204,11 +204,12 @@ libxl_shutdown_reason = Enumeration("shutdown_reason", [
     ], init_val = "LIBXL_SHUTDOWN_REASON_UNKNOWN")
 
 libxl_vga_interface_type = Enumeration("vga_interface_type", [
+    (0, "UNDEF"),
     (1, "CIRRUS"),
     (2, "STD"),
     (3, "NONE"),
     (4, "QXL"),
-    ], init_val = "LIBXL_VGA_INTERFACE_TYPE_CIRRUS")
+    ], init_val = "LIBXL_VGA_INTERFACE_TYPE_UNDEF")
 
 libxl_vendor_device = Enumeration("vendor_device", [
     (0, "NONE"),
-- 
1.9.5 (Apple Git-50.3)


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