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[PATCH] virtio-gpu: replace the surface with null surface when resetting
From: |
Dongwon Kim |
Subject: |
[PATCH] virtio-gpu: replace the surface with null surface when resetting |
Date: |
Tue, 27 Jun 2023 15:44:51 -0700 |
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>
---
hw/display/virtio-gpu.c | 5 +++++
ui/console.c | 11 ++++++-----
2 files changed, 11 insertions(+), 5 deletions(-)
diff --git a/hw/display/virtio-gpu.c b/hw/display/virtio-gpu.c
index 66cddd94d9..de92f003b5 100644
--- a/hw/display/virtio-gpu.c
+++ b/hw/display/virtio-gpu.c
@@ -1354,6 +1354,7 @@ 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);
@@ -1372,6 +1373,10 @@ 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));
}
diff --git a/ui/console.c b/ui/console.c
index e173731e20..768f39697c 100644
--- a/ui/console.c
+++ b/ui/console.c
@@ -1787,6 +1787,7 @@ void dpy_gfx_replace_surface(QemuConsole *con,
static const char placeholder_msg[] = "Display output is not active.";
DisplayState *s = con->ds;
DisplaySurface *old_surface = con->surface;
+ DisplaySurface *new_surface = surface;
DisplayChangeListener *dcl;
int width;
int height;
@@ -1800,19 +1801,19 @@ void dpy_gfx_replace_surface(QemuConsole *con,
height = 480;
}
- surface = qemu_create_placeholder_surface(width, height,
placeholder_msg);
+ new_surface = qemu_create_placeholder_surface(width, height,
placeholder_msg);
}
- assert(old_surface != surface);
+ assert(old_surface != new_surface);
con->scanout.kind = SCANOUT_SURFACE;
- con->surface = surface;
- dpy_gfx_create_texture(con, surface);
+ con->surface = new_surface;
+ dpy_gfx_create_texture(con, new_surface);
QLIST_FOREACH(dcl, &s->listeners, next) {
if (con != (dcl->con ? dcl->con : active_console)) {
continue;
}
- displaychangelistener_gfx_switch(dcl, surface, FALSE);
+ displaychangelistener_gfx_switch(dcl, new_surface, surface ? FALSE :
TRUE);
}
dpy_gfx_destroy_texture(con, old_surface);
qemu_free_displaysurface(old_surface);
--
2.34.1
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