On Wed, Jun 15, 2022 at 02:53:54PM +0200, Juergen Gross wrote: > On 15.06.22 13:54, Christoph Hellwig wrote: > > On Wed, Jun 15, 2022 at 01:39:01PM +0200, Juergen Gross wrote: > > > No, it doesn't. I'm working on a qemu patch series enabling the qemu > > > based backends to support grants with virtio. The code is working fine > > > on x86, too (apart from the fact that the backends aren't ready yet). > > > > The code right now in mainline only ever sets the ops for DMA. So > > I can't see how you could make it work. > > Ah, you are right. I was using a guest with an older version of the series. > Sorry for the noise. No problem. But whatever you end up using to enable the grant DMA ops n x86 should also require the platform access feature. We already have that information so we can make use of it.
