From: Sean Christopherson <seanjc@google.com>
To: Ben Gardon <bgardon@google.com>
Cc: linux-kernel@vger.kernel.org, kvm@vger.kernel.org,
Paolo Bonzini <pbonzini@redhat.com>, Peter Xu <peterx@redhat.com>,
Peter Shier <pshier@google.com>,
Peter Feiner <pfeiner@google.com>,
Junaid Shahid <junaids@google.com>,
Jim Mattson <jmattson@google.com>,
Yulei Zhang <yulei.kernel@gmail.com>,
Wanpeng Li <kernellwp@gmail.com>,
Vitaly Kuznetsov <vkuznets@redhat.com>,
Xiao Guangrong <xiaoguangrong.eric@gmail.com>
Subject: Re: [PATCH 13/13] KVM: x86/mmu: Tear down roots in fast invalidation thread
Date: Wed, 31 Mar 2021 22:29:40 +0000 [thread overview]
Message-ID: <YGT31GoDhVSXlgP4@google.com> (raw)
In-Reply-To: <20210331210841.3996155-14-bgardon@google.com>
On Wed, Mar 31, 2021, Ben Gardon wrote:
> ---
> arch/x86/kvm/mmu/mmu.c | 6 ++++
> arch/x86/kvm/mmu/tdp_mmu.c | 74 +++++++++++++++++++++++++++++++++++++-
> arch/x86/kvm/mmu/tdp_mmu.h | 1 +
> 3 files changed, 80 insertions(+), 1 deletion(-)
>
> diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c
> index 49b7097fb55b..22742619698d 100644
> --- a/arch/x86/kvm/mmu/mmu.c
> +++ b/arch/x86/kvm/mmu/mmu.c
> @@ -5455,6 +5455,12 @@ static void kvm_mmu_zap_all_fast(struct kvm *kvm)
> kvm_zap_obsolete_pages(kvm);
>
> write_unlock(&kvm->mmu_lock);
> +
> + if (is_tdp_mmu_enabled(kvm)) {
> + read_lock(&kvm->mmu_lock);
> + kvm_tdp_mmu_zap_all_fast(kvm);
Purely because it exists first, I think we should follow the legacy MMU's
terminology, i.e. kvm_tdp_mmu_zap_obsolete_pages().
> + read_unlock(&kvm->mmu_lock);
> + }
> }
next prev parent reply other threads:[~2021-03-31 22:30 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-31 21:08 [PATCH 00/13] More parallel operations for the TDP MMU Ben Gardon
2021-03-31 21:08 ` [PATCH 01/13] KVM: x86/mmu: Re-add const qualifier in kvm_tdp_mmu_zap_collapsible_sptes Ben Gardon
2021-03-31 21:08 ` [PATCH 02/13] KVM: x86/mmu: Move kvm_mmu_(get|put)_root to TDP MMU Ben Gardon
2021-03-31 21:08 ` [PATCH 03/13] KVM: x86/mmu: use tdp_mmu_free_sp to free roots Ben Gardon
2021-03-31 21:08 ` [PATCH 04/13] KVM: x86/mmu: Merge TDP MMU put and free root Ben Gardon
2021-03-31 21:08 ` [PATCH 05/13] KVM: x86/mmu: comment for_each_tdp_mmu_root requires MMU write lock Ben Gardon
2021-03-31 21:08 ` [PATCH 06/13] KVM: x86/mmu: Refactor yield safe root iterator Ben Gardon
2021-03-31 21:08 ` [PATCH 07/13] KVM: x86/mmu: Make TDP MMU root refcount atomic Ben Gardon
2021-03-31 22:21 ` Sean Christopherson
2021-04-01 16:50 ` Ben Gardon
2021-03-31 21:08 ` [PATCH 08/13] KVM: x86/mmu: Protect the tdp_mmu_roots list with RCU Ben Gardon
2021-04-01 9:37 ` Paolo Bonzini
2021-04-01 16:48 ` Ben Gardon
2021-04-01 13:16 ` kernel test robot
2021-04-01 16:50 ` Ben Gardon
2021-03-31 21:08 ` [PATCH 09/13] KVM: x86/mmu: Allow zap gfn range to operate under the mmu read lock Ben Gardon
2021-04-01 9:58 ` Paolo Bonzini
2021-04-01 16:50 ` Ben Gardon
2021-03-31 21:08 ` [PATCH 10/13] KVM: x86/mmu: Allow zapping collapsible SPTEs to use MMU " Ben Gardon
2021-04-01 10:12 ` Paolo Bonzini
2021-03-31 21:08 ` [PATCH 11/13] KVM: x86/mmu: Allow enabling / disabling dirty logging under " Ben Gardon
2021-03-31 21:08 ` [PATCH 12/13] KVM: x86/mmu: Fast invalidation for TDP MMU Ben Gardon
2021-03-31 22:27 ` Sean Christopherson
2021-04-01 16:50 ` Ben Gardon
2021-04-01 10:36 ` Paolo Bonzini
2021-04-01 16:50 ` Ben Gardon
2021-04-01 17:02 ` Paolo Bonzini
2021-03-31 21:08 ` [PATCH 13/13] KVM: x86/mmu: Tear down roots in fast invalidation thread Ben Gardon
2021-03-31 22:29 ` Sean Christopherson [this message]
2021-04-01 10:41 ` Paolo Bonzini
2021-04-01 10:37 ` Paolo Bonzini
2021-04-01 10:43 ` [PATCH 00/13] More parallel operations for the TDP MMU Paolo Bonzini
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