Re: [PATCH] KVM: x86/mmu: Do not create SPTEs for GFNs that exceed host.MAXPHYADDR

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Subject: Re: [PATCH] KVM: x86/mmu: Do not create SPTEs for GFNs that exceed host.MAXPHYADDR
From: Paolo Bonzini <pbonzini@xxxxxxxxxx>
Date: Fri, 29 Apr 2022 16:37:42 +0200
Cc: Vitaly Kuznetsov <vkuznets@xxxxxxxxxx>, Wanpeng Li <wanpengli@xxxxxxxxxxx>, Jim Mattson <jmattson@xxxxxxxxxx>, Joerg Roedel <joro@xxxxxxxxxx>, kvm@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, Maxim Levitsky <mlevitsk@xxxxxxxxxx>, Ben Gardon <bgardon@xxxxxxxxxx>, David Matlack <dmatlack@xxxxxxxxxx>
In-reply-to: <Ymv1I5ixX1+k8Nst@google.com>
References: <20220428233416.2446833-1-seanjc@google.com> <337332ca-835c-087c-c99b-92c35ea8dcd3@redhat.com> <Ymv1I5ixX1+k8Nst@google.com>
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.8.0

On 4/29/22 16:24, Sean Christopherson wrote:

I don't love the divergent memslot behavior, but it's technically correct, so I
can't really argue.  Do we want to "officially" document the memslot behavior?

I don't know what you mean by officially document, but at least I haverelied on it to test KVM's MAXPHYADDR=52 cases before such hardwareexisted. :)


Paolo

Follow-Ups:
- Re: [PATCH] KVM: x86/mmu: Do not create SPTEs for GFNs that exceed host.MAXPHYADDR
  - From: Sean Christopherson

References:
- [PATCH] KVM: x86/mmu: Do not create SPTEs for GFNs that exceed host.MAXPHYADDR
  - From: Sean Christopherson
- Re: [PATCH] KVM: x86/mmu: Do not create SPTEs for GFNs that exceed host.MAXPHYADDR
  - From: Paolo Bonzini
- Re: [PATCH] KVM: x86/mmu: Do not create SPTEs for GFNs that exceed host.MAXPHYADDR
  - From: Sean Christopherson

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