* [PATCH] drm/virtio: add missing virtio_gpu_array_lock_resv call
@ 2020-01-10 9:45 Gerd Hoffmann
2020-01-10 14:26 ` Jann Horn
0 siblings, 1 reply; 3+ messages in thread
From: Gerd Hoffmann @ 2020-01-10 9:45 UTC (permalink / raw)
To: dri-devel
Cc: gurchetansingh, olvaffe, jannh, Gerd Hoffmann, David Airlie,
Daniel Vetter, open list:VIRTIO GPU DRIVER, open list
When submitting a fenced command we must lock the object reservations
because virtio_gpu_queue_fenced_ctrl_buffer() unlocks after adding the
fence.
Reported-by: Jann Horn <jannh@google.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
drivers/gpu/drm/virtio/virtgpu_plane.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/virtio/virtgpu_plane.c b/drivers/gpu/drm/virtio/virtgpu_plane.c
index 390524143139..1635a9ff4794 100644
--- a/drivers/gpu/drm/virtio/virtgpu_plane.c
+++ b/drivers/gpu/drm/virtio/virtgpu_plane.c
@@ -232,6 +232,7 @@ static void virtio_gpu_cursor_plane_update(struct drm_plane *plane,
if (!objs)
return;
virtio_gpu_array_add_obj(objs, vgfb->base.obj[0]);
+ virtio_gpu_array_lock_resv(objs);
virtio_gpu_cmd_transfer_to_host_2d
(vgdev, 0,
plane->state->crtc_w,
--
2.18.1
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH] drm/virtio: add missing virtio_gpu_array_lock_resv call
2020-01-10 9:45 [PATCH] drm/virtio: add missing virtio_gpu_array_lock_resv call Gerd Hoffmann
@ 2020-01-10 14:26 ` Jann Horn
2020-01-10 21:02 ` Chia-I Wu
0 siblings, 1 reply; 3+ messages in thread
From: Jann Horn @ 2020-01-10 14:26 UTC (permalink / raw)
To: Gerd Hoffmann
Cc: dri-devel, gurchetansingh, Chia-I Wu, David Airlie,
Daniel Vetter, open list:VIRTIO GPU DRIVER, open list
On Fri, Jan 10, 2020 at 10:45 AM Gerd Hoffmann <kraxel@redhat.com> wrote:
> When submitting a fenced command we must lock the object reservations
> because virtio_gpu_queue_fenced_ctrl_buffer() unlocks after adding the
> fence.
Thanks a lot! With this patch applied, my VM doesn't throw lockdep
warnings anymore. If you want, you can add:
Tested-by: Jann Horn <jannh@google.com>
> Reported-by: Jann Horn <jannh@google.com>
> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
> ---
> drivers/gpu/drm/virtio/virtgpu_plane.c | 1 +
> 1 file changed, 1 insertion(+)
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH] drm/virtio: add missing virtio_gpu_array_lock_resv call
2020-01-10 14:26 ` Jann Horn
@ 2020-01-10 21:02 ` Chia-I Wu
0 siblings, 0 replies; 3+ messages in thread
From: Chia-I Wu @ 2020-01-10 21:02 UTC (permalink / raw)
To: Jann Horn
Cc: Gerd Hoffmann, ML dri-devel, Gurchetan Singh, David Airlie,
Daniel Vetter, open list:VIRTIO GPU DRIVER, open list
On Fri, Jan 10, 2020 at 6:27 AM Jann Horn <jannh@google.com> wrote:
>
> On Fri, Jan 10, 2020 at 10:45 AM Gerd Hoffmann <kraxel@redhat.com> wrote:
> > When submitting a fenced command we must lock the object reservations
> > because virtio_gpu_queue_fenced_ctrl_buffer() unlocks after adding the
> > fence.
>
> Thanks a lot! With this patch applied, my VM doesn't throw lockdep
> warnings anymore. If you want, you can add:
>
> Tested-by: Jann Horn <jannh@google.com>
>
> > Reported-by: Jann Horn <jannh@google.com>
> > Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Chia-I Wu <olvaffe@gmail.com>
> > ---
> > drivers/gpu/drm/virtio/virtgpu_plane.c | 1 +
> > 1 file changed, 1 insertion(+)
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2020-01-10 21:02 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
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2020-01-10 9:45 [PATCH] drm/virtio: add missing virtio_gpu_array_lock_resv call Gerd Hoffmann
2020-01-10 14:26 ` Jann Horn
2020-01-10 21:02 ` Chia-I Wu
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