linux-kernel - Re: [RFC PATCH 0/9] KVM: x86/mmu: Preserve Accessed bits on PROT changes

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Message-ID: <CALzav=few=dq5_9QC=ivRWxEtRvQR47BWh5j5-Sgg3Zy7_Rx0Q@mail.gmail.com>
Date: Mon, 5 Aug 2024 09:45:27 -0700
From: David Matlack <dmatlack@...gle.com>
To: Sean Christopherson <seanjc@...gle.com>
Cc: Paolo Bonzini <pbonzini@...hat.com>, kvm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH 0/9] KVM: x86/mmu: Preserve Accessed bits on PROT changes

On Thu, Aug 1, 2024 at 11:35 AM Sean Christopherson <seanjc@...gle.com> wrote:
>
> This applies on top of the massive "follow pfn" rework[*].  The gist is to
> avoid losing accessed information, e.g. because NUMA balancing mucks with
> PTEs,

What do you mean by "NUMA balancing mucks with PTEs"?