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virtio-gpu: replace the surface with null surface when resetting

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The primary guest scanout shows the booting screen right after reboot
but additional guest displays (i.e. max_ouptuts > 1) will keep displaying
the old frames until the guest virtio gpu driver gets initialized, which
could cause some confusion. A better way is to to replace the surface with
a place holder that tells the display is not active during the reset of
virtio-gpu device.

And to immediately update the surface with the place holder image after
the switch, displaychangelistener_gfx_switch needs to be called with
'update == TRUE' in dpy_gfx_replace_surface when the new surface is NULL.

Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Marc-André Lureau <marcandre.lureau@redhat.com>
Cc: Vivek Kasireddy <vivek.kasireddy@intel.com>
Signed-off-by: Dongwon Kim <dongwon.kim@intel.com>
Acked-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-ID: <20230627224451.11739-1-dongwon.kim@intel.com>
This commit is contained in:
Dongwon Kim 2023-06-27 15:44:51 -07:00 • committed by Marc-André Lureau
parent 83b4b236ed
commit 0d0be87659
2 changed files with 11 additions and 5 deletions
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5
hw/display/virtio-gpu.c
View file

@ -1397,6 +1397,7 @@ 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 = 0;
QTAILQ_FOREACH_SAFE(res, &g->reslist, next, tmp) {
virtio_gpu_resource_destroy(g, res);
@ -1415,6 +1416,10 @@ void virtio_gpu_reset(VirtIODevice *vdev)
g_free(cmd);
}
for (i = 0; i < g->parent_obj.conf.max_outputs; i++) {
dpy_gfx_replace_surface(g->parent_obj.scanout[i].con, NULL);
}
virtio_gpu_base_reset(VIRTIO_GPU_BASE(vdev));
}