[libvirt] [PATCH] properly set video ram size for qemu VGA video device

[Pavel Hrdina]

https://bugzilla.redhat.com/show_bug.cgi?id=1076098

We support vram option for video devices in domain xml, but so far
only for QXL it had some effect. VGA video device in QEMU can also
accept the size of video ram and we should pass it.

Signed-off-by: Pavel Hrdina <phrdina at redhat.com>
---
 src/qemu/qemu_command.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index fb64cda..09e29c9 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -4800,6 +4800,9 @@ qemuBuildDeviceVideoStr(virDomainDefPtr def,
 
         /* QEMU accepts bytes for vram_size. */
         virBufferAsprintf(&buf, ",vram_size=%u", video->vram * 1024);
+    } else if (video->type == VIR_DOMAIN_VIDEO_TYPE_VGA) {
+        /* QEMU accepts megabytes for vgamem_mb. */
+        virBufferAsprintf(&buf, ",vgamem_mb=%u", video->vram / 1024);
     }
 
     if (qemuBuildDeviceAddressStr(&buf, def, &video->info, qemuCaps) < 0)
-- 
1.8.5.5