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[Qemu-devel] [PATCH 2/2] virtio-gpu: clear command queue on reset
From: |
Gerd Hoffmann |
Subject: |
[Qemu-devel] [PATCH 2/2] virtio-gpu: clear command queue on reset |
Date: |
Thu, 14 Mar 2019 07:11:19 +0100 |
It was never correct to not clear them. Due to commit "3912e66a3feb
virtio-vga: fix reset." this became more obvious though. The virtio
rings get properly reset now, and trying to process the stale commands
will trigger an assert in the virtio core.
Signed-off-by: Gerd Hoffmann <address@hidden>
---
hw/display/virtio-gpu.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/hw/display/virtio-gpu.c b/hw/display/virtio-gpu.c
index fbd8d908ad32..cdab327658d2 100644
--- a/hw/display/virtio-gpu.c
+++ b/hw/display/virtio-gpu.c
@@ -1356,6 +1356,7 @@ static void virtio_gpu_reset(VirtIODevice *vdev)
{
VirtIOGPU *g = VIRTIO_GPU(vdev);
struct virtio_gpu_simple_resource *res, *tmp;
+ struct virtio_gpu_ctrl_command *cmd;
int i;
g->enable = 0;
@@ -1372,6 +1373,12 @@ static void virtio_gpu_reset(VirtIODevice *vdev)
g->scanout[i].ds = NULL;
}
+ while (!QTAILQ_EMPTY(&g->cmdq)) {
+ cmd = QTAILQ_FIRST(&g->cmdq);
+ QTAILQ_REMOVE(&g->cmdq, cmd, next);
+ g_free(cmd);
+ }
+
#ifdef CONFIG_VIRGL
if (g->use_virgl_renderer) {
if (g->renderer_blocked) {
--
2.18.1