Messages in this thread | | | Date | Tue, 8 Sep 2020 00:22:12 +0200 | From | Halil Pasic <> | Subject | Re: [PATCH v11 1/2] virtio: let arch advertise guest's memory access restrictions |
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On Mon, 7 Sep 2020 11:39:06 +0200 Pierre Morel <pmorel@linux.ibm.com> wrote:
> An architecture may restrict host access to guest memory, > e.g. IBM s390 Secure Execution or AMD SEV. > > Provide a new Kconfig entry the architecture can select, > CONFIG_ARCH_HAS_RESTRICTED_VIRTIO_MEMORY_ACCESS, when it provides > the arch_has_restricted_virtio_memory_access callback to advertise > to VIRTIO common code when the architecture restricts memory access > from the host. > > The common code can then fail the probe for any device where > VIRTIO_F_ACCESS_PLATFORM is required, but not set. > > Signed-off-by: Pierre Morel <pmorel@linux.ibm.com> > Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Halil Pasic <pasic@linux.ibm.com>
[..] > > +config ARCH_HAS_RESTRICTED_VIRTIO_MEMORY_ACCESS > + bool > + help > + This option is selected if the architecture may need to enforce > + VIRTIO_F_IOMMU_PLATFORM. > +
A small nit: you use F_ACCESS_PLATFORM everywhere but here.
Regards, Halil
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