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From:   Reiji Watanabe <reijiw@google.com>
Date:   Mon, 8 Nov 2021 22:36:19 -0800
Message-ID: <CAAeT=FxcFq2SoM5xRYJfB=bBzGrY1uuEUhvFd+6sb86y-rg_Yw@mail.gmail.com>
Subject: Re: [PATCH v5.5 08/30] KVM: arm64: Use "new" memslot instead of
 userspace memory region
To:     Sean Christopherson <seanjc@google.com>
Cc:     Marc Zyngier <maz@kernel.org>, Huacai Chen <chenhuacai@kernel.org>,
        Aleksandar Markovic <aleksandar.qemu.devel@gmail.com>,
        Paul Mackerras <paulus@ozlabs.org>,
        Anup Patel <anup.patel@wdc.com>,
        Paul Walmsley <paul.walmsley@sifive.com>,
        Palmer Dabbelt <palmer@dabbelt.com>,
        Albert Ou <aou@eecs.berkeley.edu>,
        Christian Borntraeger <borntraeger@de.ibm.com>,
        Janosch Frank <frankja@linux.ibm.com>,
        Paolo Bonzini <pbonzini@redhat.com>,
        Wanpeng Li <wanpengli@tencent.com>, kvm@vger.kernel.org,
        David Hildenbrand <david@redhat.com>,
        linux-kernel@vger.kernel.org, Atish Patra <atish.patra@wdc.com>,
        Ben Gardon <bgardon@google.com>,
        "Maciej S . Szmigiero" <maciej.szmigiero@oracle.com>,
        Claudio Imbrenda <imbrenda@linux.ibm.com>,
        linux-riscv@lists.infradead.org, Joerg Roedel <joro@8bytes.org>,
        kvmarm@lists.cs.columbia.edu, kvm-ppc@vger.kernel.org,
        linux-arm-kernel@lists.infradead.org,
        Jim Mattson <jmattson@google.com>,
        Cornelia Huck <cohuck@redhat.com>, linux-mips@vger.kernel.org,
        kvm-riscv@lists.infradead.org,
        Vitaly Kuznetsov <vkuznets@redhat.com>
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On Wed, Nov 3, 2021 at 5:26 PM Sean Christopherson <seanjc@google.com> wrote:
>
> Get the slot ID, hva, etc... from the "new" memslot instead of the
> userspace memory region when preparing/committing a memory region.  This
> will allow a future commit to drop @mem from the prepare/commit hooks
> once all architectures convert to using "new".
>
> Opportunistically wait to get the hva begin+end until after filtering out
> the DELETE case in anticipation of a future commit passing NULL for @new
> when deleting a memslot.
>
> Signed-off-by: Sean Christopherson <seanjc@google.com>

Reviewed-by: Reiji Watanabe <reijiw@google.com>