From: Sean Christopherson <seanjc@google.com>
To: Yan Zhao <yan.y.zhao@intel.com>
Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org,
pbonzini@redhat.com, chao.gao@intel.com, kai.huang@intel.com,
robert.hoo.linux@gmail.com, yuan.yao@linux.intel.com
Subject: Re: [PATCH v4 00/12] KVM: x86/mmu: refine memtype related mmu zap
Date: Fri, 25 Aug 2023 16:17:09 -0700 [thread overview]
Message-ID: <ZOk2dSCdc693YOKe@google.com> (raw)
In-Reply-To: <20230714064656.20147-1-yan.y.zhao@intel.com>
On Fri, Jul 14, 2023, Yan Zhao wrote:
> This series refines mmu zap caused by EPT memory type update when guest
> MTRRs are honored.
>
> Patches 1-5 revolve around utilizing helper functions to check if
> KVM TDP honors guest MTRRs, TDP zaps and page fault max_level reduction
> are now only targeted to TDPs that honor guest MTRRs.
>
> -The 5th patch will trigger zapping of TDP leaf entries if non-coherent
> DMA devices count goes from 0 to 1 or from 1 to 0.
>
> Patches 6-7 are fixes and patches 9-12 are optimizations for mmu zaps
> when guest MTRRs are honored.
> Those mmu zaps are intended to remove stale memtypes of TDP entries
> caused by changes of guest MTRRs and CR0.CD and are usually triggered from
> all vCPUs in bursts.
Sorry for the delayed review, especially with respect to patches 1-5. I completely
forgot there were cleanups at the beginning of this series. I'll make to grab
1-5 early in the 6.7 cycle, even if you haven't sent a new version before then.
next prev parent reply other threads:[~2023-08-25 23:17 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-07-14 6:46 [PATCH v4 00/12] KVM: x86/mmu: refine memtype related mmu zap Yan Zhao
2023-07-14 6:50 ` [PATCH v4 01/12] KVM: x86/mmu: helpers to return if KVM honors guest MTRRs Yan Zhao
2023-10-07 7:00 ` Like Xu
2023-10-09 19:52 ` Sean Christopherson
2023-10-09 21:27 ` Sean Christopherson
2023-10-09 21:36 ` Sean Christopherson
2023-10-10 3:46 ` Yan Zhao
2023-10-11 0:08 ` Sean Christopherson
2023-10-11 1:47 ` Yan Zhao
2023-07-14 6:50 ` [PATCH v4 02/12] KVM: x86/mmu: Use KVM honors guest MTRRs helper in kvm_tdp_page_fault() Yan Zhao
2023-07-14 6:51 ` [PATCH v4 03/12] KVM: x86/mmu: Use KVM honors guest MTRRs helper when CR0.CD toggles Yan Zhao
2023-07-14 6:51 ` [PATCH v4 04/12] KVM: x86/mmu: Use KVM honors guest MTRRs helper when update mtrr Yan Zhao
2023-07-14 6:52 ` [PATCH v4 05/12] KVM: x86/mmu: zap KVM TDP when noncoherent DMA assignment starts/stops Yan Zhao
2023-07-14 6:52 ` [PATCH v4 06/12] KVM: x86/mmu: move TDP zaps from guest MTRRs update to CR0.CD toggling Yan Zhao
2023-07-14 6:53 ` [PATCH v4 07/12] KVM: VMX: drop IPAT in memtype when CD=1 for KVM_X86_QUIRK_CD_NW_CLEARED Yan Zhao
2023-08-25 21:43 ` Sean Christopherson
2023-09-04 7:41 ` Yan Zhao
2023-07-14 6:53 ` [PATCH v4 08/12] KVM: x86: centralize code to get CD=1 memtype when guest MTRRs are honored Yan Zhao
2023-08-25 21:46 ` Sean Christopherson
2023-09-04 7:46 ` Yan Zhao
2023-07-14 6:54 ` [PATCH v4 09/12] KVM: x86/mmu: serialize vCPUs to zap gfn " Yan Zhao
2023-08-25 22:47 ` Sean Christopherson
2023-09-04 8:24 ` Yan Zhao
2023-07-14 6:55 ` [PATCH v4 10/12] KVM: x86/mmu: fine-grained gfn zap " Yan Zhao
2023-08-25 23:13 ` Sean Christopherson
2023-09-04 8:37 ` Yan Zhao
2023-07-14 6:56 ` [PATCH v4 11/12] KVM: x86/mmu: split a single gfn zap range " Yan Zhao
2023-08-25 23:15 ` Sean Christopherson
2023-09-04 8:39 ` Yan Zhao
2023-07-14 6:56 ` [PATCH v4 12/12] KVM: x86/mmu: convert kvm_zap_gfn_range() to use shared mmu_lock in TDP MMU Yan Zhao
2023-08-25 21:34 ` Sean Christopherson
2023-09-04 7:31 ` Yan Zhao
2023-09-05 22:31 ` Sean Christopherson
2023-09-06 0:50 ` Yan Zhao
2023-08-25 23:17 ` Sean Christopherson [this message]
2023-09-04 8:48 ` [PATCH v4 00/12] KVM: x86/mmu: refine memtype related mmu zap Yan Zhao
2023-10-05 1:29 ` Sean Christopherson
2023-10-05 2:19 ` Huang, Kai
2023-10-05 2:28 ` Sean Christopherson
2023-10-06 0:50 ` Sean Christopherson
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