Re: [PATCH v12 1/2] virtio: let arch advertise guest's memory access restrictions

2020-09-10 Thread Christian Borntraeger
On 10.09.20 10:53, Pierre Morel 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_restric

[PATCH v12 1/2] virtio: let arch advertise guest's memory access restrictions

2020-09-10 Thread Pierre Morel
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 VIRT