linux-kernel - Re: [PATCH] KVM: x86/mmu: Add comment on try_cmpxchg64 usage in tdp_mmu_set_spte

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Message-ID: <168512497255.2748559.4747399178242270011.b4-ty@google.com>
Date:   Thu,  1 Jun 2023 18:22:46 -0700
From:   Sean Christopherson <seanjc@...gle.com>
To:     Sean Christopherson <seanjc@...gle.com>, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org, Uros Bizjak <ubizjak@...il.com>
Cc:     Paolo Bonzini <pbonzini@...hat.com>,
        David Matlack <dmatlack@...gle.com>
Subject: Re: [PATCH] KVM: x86/mmu: Add comment on try_cmpxchg64 usage in tdp_mmu_set_spte_atomic

On Tue, 25 Apr 2023 13:39:32 +0200, Uros Bizjak wrote:
> Commit aee98a6838d5 ("KVM: x86/mmu: Use try_cmpxchg64 in
> tdp_mmu_set_spte_atomic") removed the comment that iter->old_spte is
> updated when different logical CPU modifies the page table entry.
> Although this is what try_cmpxchg does implicitly, it won't hurt
> if this fact is explicitly mentioned in a restored comment.
> 
> 
> [...]

Applied to kvm-x86 mmu, thanks!

[1/1] KVM: x86/mmu: Add comment on try_cmpxchg64 usage in tdp_mmu_set_spte_atomic
      https://github.com/kvm-x86/linux/commit/12ced095956a

--
https://github.com/kvm-x86/linux/tree/next
https://github.com/kvm-x86/linux/tree/fixes