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

[Cornelia Huck]

On Wed, Jul 14 2021, Jason Gunthorpe <jgg at 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 at nvidia.com>
> ---
>  drivers/gpu/drm/i915/gvt/kvmgt.c | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)

Reviewed-by: Cornelia Huck <cohuck at redhat.com>