From: David Matlack <dmatlack@google.com>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: Marc Zyngier <maz@kernel.org>,
Huacai Chen <chenhuacai@kernel.org>,
Aleksandar Markovic <aleksandar.qemu.devel@gmail.com>,
Anup Patel <anup@brainfault.org>,
Paul Walmsley <paul.walmsley@sifive.com>,
Palmer Dabbelt <palmer@dabbelt.com>,
Albert Ou <aou@eecs.berkeley.edu>,
Sean Christopherson <seanjc@google.com>,
Andrew Jones <drjones@redhat.com>,
Ben Gardon <bgardon@google.com>, Peter Xu <peterx@redhat.com>,
maciej.szmigiero@oracle.com,
"moderated list:KERNEL VIRTUAL MACHINE FOR ARM64 (KVM/arm64)"
<kvmarm@lists.cs.columbia.edu>,
"open list:KERNEL VIRTUAL MACHINE FOR MIPS (KVM/mips)"
<linux-mips@vger.kernel.org>,
"open list:KERNEL VIRTUAL MACHINE FOR MIPS (KVM/mips)"
<kvm@vger.kernel.org>,
"open list:KERNEL VIRTUAL MACHINE FOR RISC-V (KVM/riscv)"
<kvm-riscv@lists.infradead.org>,
Peter Feiner <pfeiner@google.com>,
David Matlack <dmatlack@google.com>
Subject: [PATCH v3 15/23] KVM: x86/mmu: Update page stats in __rmap_add()
Date: Fri, 1 Apr 2022 17:55:46 +0000 [thread overview]
Message-ID: <20220401175554.1931568-16-dmatlack@google.com> (raw)
In-Reply-To: <20220401175554.1931568-1-dmatlack@google.com>
Update the page stats in __rmap_add() rather than at the call site. This
will avoid having to manually update page stats when splitting huge
pages in a subsequent commit.
No functional change intended.
Reviewed-by: Ben Gardon <bgardon@google.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Signed-off-by: David Matlack <dmatlack@google.com>
---
arch/x86/kvm/mmu/mmu.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c
index 7305a8c625c0..5e1002d57689 100644
--- a/arch/x86/kvm/mmu/mmu.c
+++ b/arch/x86/kvm/mmu/mmu.c
@@ -1602,6 +1602,8 @@ static void __rmap_add(struct kvm *kvm,
sp = sptep_to_sp(spte);
kvm_mmu_page_set_gfn(sp, spte - sp->spt, gfn);
+ kvm_update_page_stats(kvm, sp->role.level, 1);
+
rmap_head = gfn_to_rmap(gfn, sp->role.level, slot);
rmap_count = pte_list_add(cache, spte, rmap_head);
@@ -2839,7 +2841,6 @@ static int mmu_set_spte(struct kvm_vcpu *vcpu, struct kvm_memory_slot *slot,
if (!was_rmapped) {
WARN_ON_ONCE(ret == RET_PF_SPURIOUS);
- kvm_update_page_stats(vcpu->kvm, level, 1);
rmap_add(vcpu, slot, sptep, gfn);
}
--
2.35.1.1094.g7c7d902a7c-goog
next prev parent reply other threads:[~2022-04-01 17:56 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-01 17:55 [PATCH v3 00/23] KVM: Extend Eager Page Splitting to the shadow MMU David Matlack
2022-04-01 17:55 ` [PATCH v3 01/23] KVM: x86/mmu: Optimize MMU page cache lookup for all direct SPs David Matlack
2022-04-01 17:55 ` [PATCH v3 02/23] KVM: x86/mmu: Use a bool for direct David Matlack
2022-04-08 22:24 ` Sean Christopherson
2022-04-01 17:55 ` [PATCH v3 03/23] KVM: x86/mmu: Derive shadow MMU page role from parent David Matlack
2022-04-01 17:55 ` [PATCH v3 04/23] KVM: x86/mmu: Decompose kvm_mmu_get_page() into separate functions David Matlack
2022-04-01 17:55 ` [PATCH v3 05/23] KVM: x86/mmu: Rename shadow MMU functions that deal with shadow pages David Matlack
2022-04-01 17:55 ` [PATCH v3 06/23] KVM: x86/mmu: Pass memslot to kvm_mmu_new_shadow_page() David Matlack
2022-04-01 17:55 ` [PATCH v3 07/23] KVM: x86/mmu: Separate shadow MMU sp allocation from initialization David Matlack
2022-04-01 17:55 ` [PATCH v3 08/23] KVM: x86/mmu: Link spt to sp during allocation David Matlack
2022-04-01 17:55 ` [PATCH v3 09/23] KVM: x86/mmu: Move huge page split sp allocation code to mmu.c David Matlack
2022-04-01 17:55 ` [PATCH v3 10/23] KVM: x86/mmu: Use common code to free kvm_mmu_page structs David Matlack
2022-04-01 17:55 ` [PATCH v3 11/23] KVM: x86/mmu: Use common code to allocate shadow pages from vCPU caches David Matlack
2022-04-01 17:55 ` [PATCH v3 12/23] KVM: x86/mmu: Pass const memslot to rmap_add() David Matlack
2022-04-01 17:55 ` [PATCH v3 13/23] KVM: x86/mmu: Pass const memslot to init_shadow_page() and descendants David Matlack
2022-04-01 17:55 ` [PATCH v3 14/23] KVM: x86/mmu: Decouple rmap_add() and link_shadow_page() from kvm_vcpu David Matlack
2022-04-01 17:55 ` David Matlack [this message]
2022-04-01 17:55 ` [PATCH v3 16/23] KVM: x86/mmu: Cache the access bits of shadowed translations David Matlack
2022-04-09 0:02 ` Sean Christopherson
2022-04-14 16:47 ` David Matlack
2022-04-01 17:55 ` [PATCH v3 17/23] KVM: x86/mmu: Extend make_huge_page_split_spte() for the shadow MMU David Matlack
2022-04-01 17:55 ` [PATCH v3 18/23] KVM: x86/mmu: Zap collapsible SPTEs at all levels in " David Matlack
2022-04-01 17:55 ` [PATCH v3 19/23] KVM: x86/mmu: Refactor drop_large_spte() David Matlack
2022-04-01 17:55 ` [PATCH v3 20/23] KVM: Allow for different capacities in kvm_mmu_memory_cache structs David Matlack
2022-04-20 10:55 ` Anup Patel
2022-04-21 16:19 ` Ben Gardon
2022-04-21 16:33 ` David Matlack
2022-04-01 17:55 ` [PATCH v3 21/23] KVM: Allow GFP flags to be passed when topping up MMU caches David Matlack
2022-04-01 17:55 ` [PATCH v3 22/23] KVM: x86/mmu: Support Eager Page Splitting in the shadow MMU David Matlack
2022-04-09 0:39 ` Sean Christopherson
2022-04-14 16:50 ` David Matlack
2022-04-01 17:55 ` [PATCH v3 23/23] KVM: selftests: Map x86_64 guest virtual memory with huge pages David Matlack
2022-04-11 17:12 ` [PATCH v3 00/23] KVM: Extend Eager Page Splitting to the shadow MMU Sean Christopherson
2022-04-11 17:54 ` David Matlack
2022-04-11 20:12 ` Sean Christopherson
2022-04-11 23:41 ` David Matlack
2022-04-12 0:39 ` Sean Christopherson
2022-04-12 16:49 ` David Matlack
2022-04-13 1:02 ` Sean Christopherson
2022-04-13 17:57 ` David Matlack
2022-04-13 18:28 ` Sean Christopherson
2022-04-13 21:22 ` David Matlack
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