From: Marc-André Lureau <marcandre.lur...@redhat.com>
Commit dfcf74fa ("virtio-gpu: fix scanout migration post-load") broke
forward/backward version migration. Versioning of nested VMSD structures
is not straightforward, as the wire format doesn't have nested
structures versions.
Use the previously introduced check_machine_version() function as a
field test to ensure proper saving/loading based on the machine version.
The VMSD.version is irrelevant now.
Fixes: dfcf74fa ("virtio-gpu: fix scanout migration post-load")
Suggested-by: Peter Xu <pet...@redhat.com>
Signed-off-by: Marc-André Lureau <marcandre.lur...@redhat.com>
---
hw/display/virtio-gpu.c | 21 +++++++++++++--------
1 file changed, 13 insertions(+), 8 deletions(-)
diff --git a/hw/display/virtio-gpu.c b/hw/display/virtio-gpu.c
index ae831b6b3e..b2d8e5faeb 100644
--- a/hw/display/virtio-gpu.c
+++ b/hw/display/virtio-gpu.c
@@ -20,6 +20,7 @@
#include "trace.h"
#include "sysemu/dma.h"
#include "sysemu/sysemu.h"
+#include "hw/boards.h"
#include "hw/virtio/virtio.h"
#include "migration/qemu-file-types.h"
#include "hw/virtio/virtio-gpu.h"
@@ -1166,10 +1167,14 @@ static void virtio_gpu_cursor_bh(void *opaque)
virtio_gpu_handle_cursor(&g->parent_obj.parent_obj, g->cursor_vq);
}
+static bool machine_check_9_0(void *opaque, int version)
+{
+ return machine_check_version(9, 0);
+}
+
static const VMStateDescription vmstate_virtio_gpu_scanout = {
.name = "virtio-gpu-one-scanout",
- .version_id = 2,
- .minimum_version_id = 1,
+ .version_id = 1,
.fields = (const VMStateField[]) {
VMSTATE_UINT32(resource_id, struct virtio_gpu_scanout),
VMSTATE_UINT32(width, struct virtio_gpu_scanout),
@@ -1181,12 +1186,12 @@ static const VMStateDescription
vmstate_virtio_gpu_scanout = {
VMSTATE_UINT32(cursor.hot_y, struct virtio_gpu_scanout),
VMSTATE_UINT32(cursor.pos.x, struct virtio_gpu_scanout),
VMSTATE_UINT32(cursor.pos.y, struct virtio_gpu_scanout),
- VMSTATE_UINT32_V(fb.format, struct virtio_gpu_scanout, 2),
- VMSTATE_UINT32_V(fb.bytes_pp, struct virtio_gpu_scanout, 2),
- VMSTATE_UINT32_V(fb.width, struct virtio_gpu_scanout, 2),
- VMSTATE_UINT32_V(fb.height, struct virtio_gpu_scanout, 2),
- VMSTATE_UINT32_V(fb.stride, struct virtio_gpu_scanout, 2),
- VMSTATE_UINT32_V(fb.offset, struct virtio_gpu_scanout, 2),
+ VMSTATE_UINT32_TEST(fb.format, struct virtio_gpu_scanout,
machine_check_9_0),
+ VMSTATE_UINT32_TEST(fb.bytes_pp, struct virtio_gpu_scanout,
machine_check_9_0),
+ VMSTATE_UINT32_TEST(fb.width, struct virtio_gpu_scanout,
machine_check_9_0),
+ VMSTATE_UINT32_TEST(fb.height, struct virtio_gpu_scanout,
machine_check_9_0),
+ VMSTATE_UINT32_TEST(fb.stride, struct virtio_gpu_scanout,
machine_check_9_0),
+ VMSTATE_UINT32_TEST(fb.offset, struct virtio_gpu_scanout,
machine_check_9_0),
VMSTATE_END_OF_LIST()
},
};
--
2.41.0.28.gd7d8841f67
