linux-kernel - Re: [PATCH v2 0/6] KVM: x86/mmu: refine memtype related mmu zap

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Date:   Wed, 24 May 2023 19:04:42 +0800
From:   Yan Zhao <yan.y.zhao@...el.com>
To:     Sean Christopherson <seanjc@...gle.com>
CC:     <kvm@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <pbonzini@...hat.com>
Subject: Re: [PATCH v2 0/6] KVM: x86/mmu: refine memtype related mmu zap

On Tue, May 23, 2023 at 05:15:52PM -0700, Sean Christopherson wrote:
> On Tue, May 09, 2023, Yan Zhao wrote:
> > This series refines mmu zap caused by EPT memory type update.
> > Yan Zhao (6):
> >   KVM: x86/mmu: add a new mmu zap helper to indicate memtype changes
> >   KVM: x86/mmu: only zap EPT when guest CR0_CD changes
> >   KVM: x86/mmu: only zap EPT when guest MTRR changes
> >   KVM: x86/mmu: Zap all EPT leaf entries according noncoherent DMA count
> >   KVM: x86: Keep a per-VM MTRR state
> >   KVM: x86/mmu: use per-VM based MTRR for EPT
> > 
> >  arch/x86/include/asm/kvm_host.h |   3 +
> >  arch/x86/kvm/mmu.h              |   1 +
> >  arch/x86/kvm/mmu/mmu.c          |  18 ++++-
> >  arch/x86/kvm/mtrr.c             | 112 +++++++++++++++++++++++++-------
> >  arch/x86/kvm/vmx/vmx.c          |   2 +-
> >  arch/x86/kvm/x86.c              |  10 ++-
> >  arch/x86/kvm/x86.h              |   6 +-
> >  7 files changed, 122 insertions(+), 30 deletions(-)
> > 
> > 
> > base-commit: 5c291b93e5d665380dbecc6944973583f9565ee5
> > -- 
> 
> To save us both a bit of pain, can you base the next version on top of my PAT
> cleanup[*]?  I am planning on applying that series "soon".  Thanks!
> 
> [*] https://lore.kernel.org/all/20230511233351.635053-1-seanjc@google.com 
Sure, will do it!