From: David Matlack <dmatlack@google.com>
To: Vipin Sharma <vipinsh@google.com>
Cc: seanjc@google.com, pbonzini@redhat.com, bgardon@google.com,
kvm@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [Patch v3 8/9] KVM: x86/mmu: Make split_shadow_page_cache NUMA aware
Date: Thu, 29 Dec 2022 15:18:07 -0800 [thread overview]
Message-ID: <Y64gLzMJ5Ap2VmDs@google.com> (raw)
In-Reply-To: <20221222023457.1764-9-vipinsh@google.com>
On Wed, Dec 21, 2022 at 06:34:56PM -0800, Vipin Sharma wrote:
> Make split_shadow_page_cache NUMA aware and allocate page table's pages
> during the split based on the underlying physical page's NUMA node.
>
> Signed-off-by: Vipin Sharma <vipinsh@google.com>
> ---
> arch/x86/include/asm/kvm_host.h | 2 +-
> arch/x86/kvm/mmu/mmu.c | 50 ++++++++++++++++++---------------
> 2 files changed, 29 insertions(+), 23 deletions(-)
>
> diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
> index b1f319ad6f89..7b3f36ae37a4 100644
> --- a/arch/x86/include/asm/kvm_host.h
> +++ b/arch/x86/include/asm/kvm_host.h
> @@ -1410,7 +1410,7 @@ struct kvm_arch {
> *
> * Protected by kvm->slots_lock.
> */
> - struct kvm_mmu_memory_cache split_shadow_page_cache;
> + struct kvm_mmu_memory_cache split_shadow_page_cache[MAX_NUMNODES];
> struct kvm_mmu_memory_cache split_page_header_cache;
>
> /*
> diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c
> index 511c6ef265ee..7454bfc49a51 100644
> --- a/arch/x86/kvm/mmu/mmu.c
> +++ b/arch/x86/kvm/mmu/mmu.c
> @@ -6126,7 +6126,7 @@ static void kvm_mmu_invalidate_zap_pages_in_memslot(struct kvm *kvm,
> int kvm_mmu_init_vm(struct kvm *kvm)
> {
> struct kvm_page_track_notifier_node *node = &kvm->arch.mmu_sp_tracker;
> - int r;
> + int r, nid;
>
> INIT_LIST_HEAD(&kvm->arch.active_mmu_pages);
> INIT_LIST_HEAD(&kvm->arch.possible_nx_huge_pages);
> @@ -6145,8 +6145,9 @@ int kvm_mmu_init_vm(struct kvm *kvm)
> INIT_KVM_MMU_MEMORY_CACHE(&kvm->arch.split_page_header_cache,
> mmu_page_header_cache, NUMA_NO_NODE);
>
> - INIT_KVM_MMU_MEMORY_CACHE(&kvm->arch.split_shadow_page_cache,
> - NULL, NUMA_NO_NODE);
> + for_each_node(nid)
> + INIT_KVM_MMU_MEMORY_CACHE(&kvm->arch.split_shadow_page_cache[nid],
> + NULL, NUMA_NO_NODE);
^^^^^^^^^^^^
Should this be nid?
next prev parent reply other threads:[~2022-12-29 23:18 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-22 2:34 [Patch v3 0/9] NUMA aware page table's pages allocation Vipin Sharma
2022-12-22 2:34 ` [Patch v3 1/9] KVM: x86/mmu: Repurpose KVM MMU shrinker to purge shadow page caches Vipin Sharma
2022-12-27 18:37 ` Ben Gardon
2022-12-28 22:07 ` Vipin Sharma
2022-12-29 21:15 ` David Matlack
2023-01-03 17:38 ` Vipin Sharma
2022-12-29 21:54 ` David Matlack
2023-01-03 18:01 ` Vipin Sharma
2023-01-04 0:25 ` Vipin Sharma
2023-01-18 17:43 ` Sean Christopherson
2023-01-03 19:32 ` Mingwei Zhang
2023-01-04 1:00 ` Vipin Sharma
2023-01-04 6:29 ` Mingwei Zhang
2023-01-04 6:57 ` Mingwei Zhang
2023-01-18 17:36 ` Sean Christopherson
2022-12-22 2:34 ` [Patch v3 2/9] KVM: x86/mmu: Remove zapped_obsolete_pages from struct kvm_arch{} Vipin Sharma
2022-12-29 21:59 ` David Matlack
2022-12-22 2:34 ` [Patch v3 3/9] KVM: x86/mmu: Shrink split_shadow_page_cache via KVM MMU shrinker Vipin Sharma
2022-12-22 2:34 ` [Patch v3 4/9] KVM: Add module param to make page tables NUMA aware Vipin Sharma
2022-12-29 22:05 ` David Matlack
2022-12-22 2:34 ` [Patch v3 5/9] KVM: x86/mmu: Allocate TDP page table's page on correct NUMA node on split Vipin Sharma
2022-12-27 19:02 ` Ben Gardon
2022-12-28 22:07 ` Vipin Sharma
2022-12-29 22:30 ` David Matlack
2023-01-03 18:26 ` Vipin Sharma
2022-12-22 2:34 ` [Patch v3 6/9] KVM: Provide NUMA node support to kvm_mmu_memory_cache{} Vipin Sharma
2022-12-27 19:09 ` Ben Gardon
2022-12-28 22:07 ` Vipin Sharma
2022-12-29 18:22 ` Ben Gardon
2023-01-03 17:36 ` Vipin Sharma
2022-12-29 23:08 ` David Matlack
2022-12-29 23:11 ` David Matlack
2023-01-03 18:45 ` Vipin Sharma
2023-01-03 18:55 ` David Matlack
2022-12-22 2:34 ` [Patch v3 7/9] KVM: x86/mmu: Allocate page table's pages on NUMA node of the underlying pages Vipin Sharma
2022-12-27 19:34 ` Ben Gardon
2022-12-28 22:08 ` Vipin Sharma
2022-12-29 18:20 ` Ben Gardon
2022-12-22 2:34 ` [Patch v3 8/9] KVM: x86/mmu: Make split_shadow_page_cache NUMA aware Vipin Sharma
2022-12-27 19:42 ` Ben Gardon
2022-12-28 22:08 ` Vipin Sharma
2022-12-29 23:18 ` David Matlack [this message]
2023-01-03 18:49 ` Vipin Sharma
2022-12-22 2:34 ` [Patch v3 9/9] KVM: x86/mmu: Reduce default cache size in KVM from 40 to PT64_ROOT_MAX_LEVEL Vipin Sharma
2022-12-27 19:52 ` Ben Gardon
2022-12-28 22:08 ` Vipin Sharma
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