Re: [PATCH 12/13] vfio/gvt: Fix open/close when multiple device FDs are open

On Wed, Jul 14 2021, Jason Gunthorpe jgg@nvidia.com wrote:

The user can open multiple device FDs if it likes, however the open function calls vfio_register_notifier() on device global state. Calling vfio_register_notifier() twice will trigger a WARN_ON from notifier_chain_register() and the first close will wrongly delete the notifier and more.

Since these really want the new open/close_device() semantics just change the function over.

Signed-off-by: Jason Gunthorpe jgg@nvidia.com

drivers/gpu/drm/i915/gvt/kvmgt.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)

Reviewed-by: Cornelia Huck cohuck@redhat.com