Re: [PATCH v5 10/17] KVM: Implement KVM_CAP_USERFAULT_ON_MISSING by atomizing __gfn_to_pfn_memslot() calls

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Subject: Re: [PATCH v5 10/17] KVM: Implement KVM_CAP_USERFAULT_ON_MISSING by atomizing __gfn_to_pfn_memslot() calls
From: Anish Moorthy <amoorthy@xxxxxxxxxx>
Date: Thu, 2 Nov 2023 13:25:51 -0700
Cc: oliver.upton@xxxxxxxxx, kvm@xxxxxxxxxxxxxxx, kvmarm@xxxxxxxxxxxxxxx, pbonzini@xxxxxxxxxx, maz@xxxxxxxxxx, robert.hoo.linux@xxxxxxxxx, jthoughton@xxxxxxxxxx, axelrasmussen@xxxxxxxxxx, peterx@xxxxxxxxxx, nadav.amit@xxxxxxxxx, isaku.yamahata@xxxxxxxxx, kconsul@xxxxxxxxxxxxxxxxxx
In-reply-to: <CAF7b7mpzkjvBTybbaEUSp7iL3dVURVi+rDtkkojOcXAY=Bk9=g@mail.gmail.com>
References: <20230908222905.1321305-1-amoorthy@google.com> <20230908222905.1321305-11-amoorthy@google.com> <ZR4U_czGstnDrVxo@google.com> <CAF7b7mrka8ASjp2UWWunCORjYbjUaOzSyzy_p-0KZXdrfOBOHQ@mail.gmail.com> <CAF7b7mpzkjvBTybbaEUSp7iL3dVURVi+rDtkkojOcXAY=Bk9=g@mail.gmail.com>

On Thu, Nov 2, 2023 at 12:14 PM Anish Moorthy <amoorthy@xxxxxxxxxx> wrote:
>
> Proposed commit message for the squashed commit
>
> > KVM: Add KVM_CAP_EXIT_ON_MISSING which forbids page faults in stage-2 fault handlers

Erm, I seem to have flubbed it already. IIRC this should be
"vcpu-context accesses," not "stage-2 fault handlers"

References:
- [PATCH v5 00/17] Improve KVM + userfaultfd live migration via annotated memory faults.
  - From: Anish Moorthy
- [PATCH v5 10/17] KVM: Implement KVM_CAP_USERFAULT_ON_MISSING by atomizing __gfn_to_pfn_memslot() calls
  - From: Anish Moorthy
- Re: [PATCH v5 10/17] KVM: Implement KVM_CAP_USERFAULT_ON_MISSING by atomizing __gfn_to_pfn_memslot() calls
  - From: Sean Christopherson
- Re: [PATCH v5 10/17] KVM: Implement KVM_CAP_USERFAULT_ON_MISSING by atomizing __gfn_to_pfn_memslot() calls
  - From: Anish Moorthy
- Re: [PATCH v5 10/17] KVM: Implement KVM_CAP_USERFAULT_ON_MISSING by atomizing __gfn_to_pfn_memslot() calls
  - From: Anish Moorthy

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