Re: [PATCH v4 2/2] s390/vfio-ap: control access to PQAP(AQIC) interception handler

From: Jason Gunthorpe
Date: Tue May 25 2021 - 09:27:51 EST

On Tue, May 25, 2021 at 09:24:59AM -0400, Jason J. Herne wrote:
> change the function pointer to point to vfio_ap_ops:handle_pqap(). When we
> unload the module we change the function pointer back to the stub. The
> updates should be atomic operations so no lock needed, right?