motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-07-27 04:13:53 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

virtio: Allow .get_vhost() without vhost_started

Browse source 
Historically, .get_vhost() was probably only called when
vdev->vhost_started is true.  However, we now decidedly want to call it
also when vhost_started is false, specifically so we can issue a reset
to the vhost back-end while device operation is stopped.

Some .get_vhost() implementations dereference some pointers (or return
offsets from them) that are probably guaranteed to be non-NULL when
vhost_started is true, but not necessarily otherwise.  This patch makes
all such implementations check all such pointers, returning NULL if any
is NULL.

Signed-off-by: Hanna Czenczek <hreitz@redhat.com>
Message-Id: <20240723163941.48775-2-hreitz@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Hanna Czenczek 2024-07-23 18:39:39 +02:00 • committed by Michael S. Tsirkin
parent a66f28df65
commit 00adced5c3
4 changed files with 34 additions and 6 deletions
Download patch file Download diff file Expand all files Collapse all files

2
hw/display/vhost-user-gpu.c
View file

@ -642,7 +642,7 @@ vhost_user_gpu_device_realize(DeviceState *qdev, Error **errp)
static struct vhost_dev *vhost_user_gpu_get_vhost(VirtIODevice *vdev)
{
VhostUserGPU *g = VHOST_USER_GPU(vdev);
return &g->vhost->dev;
return g->vhost ? &g->vhost->dev : NULL;
}
static Property vhost_user_gpu_properties[] = {