display/qxl: allow primary creation larger than framebuffermaster

The framebuffer size is meaningless once native mode is used, which we
enter by primary surface creation io. If the memory allocation is bad
spice server will complain. But for valid allocations we can allocate
any size from the pci bar.

Signed-off-by: Alon Levy <alevy@redhat.com>

1 files changed, 3 insertions, 8 deletions

diff --git a/hw/display/qxl.c b/hw/display/qxl.c
index abe7a18a8..521494840 100644
--- a/hw/display/qxl.c
+++ b/hw/display/qxl.c
@@ -1366,16 +1366,11 @@ static void qxl_create_guest_primary(PCIQXLDevice *qxl, int loadvm,
 {
     QXLDevSurfaceCreate surface;
     QXLSurfaceCreate *sc = &qxl->guest_primary.surface;
-    uint32_t requested_height = le32_to_cpu(sc->height);
     int requested_stride = le32_to_cpu(sc->stride);
 
-    if (requested_stride == INT32_MIN ||
-        abs(requested_stride) * (uint64_t)requested_height
-                                        > qxl->vgamem_size) {
-        qxl_set_guest_bug(qxl, "%s: requested primary larger than framebuffer"
-                               " stride %d x height %" PRIu32 " > %" PRIu32,
-                               __func__, requested_stride, requested_height,
-                               qxl->vgamem_size);
+    if (requested_stride == INT32_MIN) {
+        qxl_set_guest_bug(qxl, "%s: requested primary has invalid stride",
+                          __func__);
         return;
     }