diff options
| author | Marc-André Lureau <marcandre.lureau@redhat.com> | 2018-08-03 17:32:35 +0200 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2018-08-07 15:03:58 +0100 |
| commit | 93f874fe9dbe0b997b5a9459840957efd13d7191 (patch) | |
| tree | 44484b3c3f6d071bf7dce2548d3bfbc61802a805 /hw/display/virtio-gpu.c | |
| parent | 09b94ac0f29db3b022a77a5aa50dc9e37032689d (diff) | |
virtio-gpu: fix crashes upon warm reboot with vga mode
With vga=775 on the Linux command line a first boot of the VM running
Linux works fine. After a warm reboot it crashes during Linux boot.
Before that, valgrind points out bad memory write to console
surface. The VGA code is not aware that virtio-gpu got a message
surface scanout when the display is disabled. Let's reset VGA graphic
mode when it is the case, so that a new display surface is created
when doing further VGA operations.
https://bugs.launchpad.net/qemu/+bug/1784900/
Reported-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Tested-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
Message-id: 20180803153235.4134-1-marcandre.lureau@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'hw/display/virtio-gpu.c')
| -rw-r--r-- | hw/display/virtio-gpu.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/hw/display/virtio-gpu.c b/hw/display/virtio-gpu.c index ec366f4c35..3ddd29c0de 100644 --- a/hw/display/virtio-gpu.c +++ b/hw/display/virtio-gpu.c @@ -421,6 +421,11 @@ static void virtio_gpu_disable_scanout(VirtIOGPU *g, int scanout_id) scanout->height ?: 480, "Guest disabled display."); } + + if (g->disable_scanout) { + g->disable_scanout(g, scanout_id); + } + dpy_gfx_replace_surface(scanout->con, ds); scanout->resource_id = 0; scanout->ds = NULL; |