| Date | Mon, 30 Oct 2023 18:34:12 +0100 | Subject | Re: [PATCH v13 22/35] KVM: Allow arch code to track number of memslot address spaces per VM | From | Paolo Bonzini <> |
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On 10/27/23 20:22, Sean Christopherson wrote: > Let x86 track the number of address spaces on a per-VM basis so that KVM > can disallow SMM memslots for confidential VMs. Confidentials VMs are > fundamentally incompatible with emulating SMM, which as the name suggests > requires being able to read and write guest memory and register state. > > Disallowing SMM will simplify support for guest private memory, as KVM > will not need to worry about tracking memory attributes for multiple > address spaces (SMM is the only "non-default" address space across all > architectures).
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
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