Messages in this thread |  | | Date | Wed, 8 Aug 2018 22:40:13 -0700 | From | Christoph Hellwig <> | Subject | Re: [RFC 0/4] Virtio uses DMA API for all devices |
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On Thu, Aug 09, 2018 at 08:13:32AM +1000, Benjamin Herrenschmidt wrote: > > > - if (xen_domain()) > > > + if (xen_domain() || pseries_secure_vm()) > > > return true; > > > > I don't think it's pseries specific actually. E.g. I suspect AMD SEV > > might benefit from the same kind of hack. > > As long as they can provide the same guarantee that the DMA ops are > completely equivalent between virtio and other PCI devices, at least on > the same bus, ie, we don't have to go hack special DMA ops. > > I think the latter is really what Christoph wants to avoid for good > reasons.
Yes. I also generally want to avoid too much arch specific magic.
FYI, I'm off to a week-long vacation today, don't expect quick replies.
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