Messages in this thread | | | Subject | Re: [PATCH v1 0/1] s390: virtio-ccw: PV needs VIRTIO I/O device protection | From | Pierre Morel <> | Date | Fri, 7 Aug 2020 16:25:59 +0200 |
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On 2020-08-06 17:47, Cornelia Huck wrote: > On Thu, 6 Aug 2020 16:23:01 +0200 ... > This does work, and I'm tempted to queue this patch, but I'm wondering > whether we need to give up on a cross-architecture solution already > (especially keeping in mind that ccw is the only transport that is > really architecture-specific). > > I know that we've gone through a few rounds already, and I'm not sure > whether we've been there already, but: > > Could virtio_finalize_features() call an optional > arch_has_restricted_memory_access() function and do the enforcing of > IOMMU_PLATFORM? That would catch all transports, and things should work > once an architecture opts in. That direction also shouldn't be a > problem if virtio is a module.
Yes thanks, I rework it in this direction.
-- Pierre Morel IBM Lab Boeblingen
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