linux-kernel - Re: [PATCH] KVM: x86/mmu: Skip MMIO SPTE invalidation if enable_mmio

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Message-ID: <176055118045.1528618.11131558125165685639.b4-ty@google.com>
Date: Wed, 15 Oct 2025 11:02:48 -0700
From: Sean Christopherson <seanjc@...gle.com>
To: Sean Christopherson <seanjc@...gle.com>, kvm@...r.kernel.org, 
	Paolo Bonzini <pbonzini@...hat.com>, Dmytro Maluka <dmaluka@...omium.org>
Cc: Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>, 
	Dave Hansen <dave.hansen@...ux.intel.com>, x86@...nel.org, 
	"H. Peter Anvin" <hpa@...or.com>, linux-kernel@...r.kernel.org, 
	Grzegorz Jaszczyk <jaszczyk@...gle.com>, Vineeth Pillai <vineethrp@...gle.com>, 
	Tomasz Nowicki <tnowicki@...gle.com>, Chuanxiao Dong <chuanxiao.dong@...el.com>
Subject: Re: [PATCH] KVM: x86/mmu: Skip MMIO SPTE invalidation if enable_mmio_caching=0

On Fri, 26 Sep 2025 15:51:39 +0200, Dmytro Maluka wrote:
> If MMIO caching is disabled, there are no MMIO SPTEs to invalidate, so
> the costly zapping of all pages is unnecessary even in the unlikely case
> when the MMIO generation number has wrapped.

Applied to kvm-x86 mmu, thanks!

[1/1] KVM: x86/mmu: Skip MMIO SPTE invalidation if enable_mmio_caching=0
      https://github.com/kvm-x86/linux/commit/b850841a53c5

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