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| author |   Mingwei Zhang <mizhang@google.com> | 2021-08-02 21:46:07 -0700 |
|---|---|---|
| committer |   Paolo Bonzini <pbonzini@redhat.com> | 2021-08-20 16:06:34 -0400 |
| commit | 71f51d2c3253645ccff69d6fa3a870f47005f0b3 (patch) | |
| tree | 491d1cba8e77f7dfcb4b623d0fa21f6c954807ef /arch/x86/kvm/mmu.h | |
| parent | KVM: x86/mmu: Avoid collision with !PRESENT SPTEs in TDP MMU lpage stats (diff) | |
| download | linux-dev-71f51d2c3253645ccff69d6fa3a870f47005f0b3.tar.xz linux-dev-71f51d2c3253645ccff69d6fa3a870f47005f0b3.zip | |
KVM: x86/mmu: Add detailed page size stats
Existing KVM code tracks the number of large pages regardless of their
sizes. Therefore, when large page of 1GB (or larger) is adopted, the
information becomes less useful because lpages counts a mix of 1G and 2M
pages.
So remove the lpages since it is easy for user space to aggregate the info.
Instead, provide a comprehensive page stats of all sizes from 4K to 512G.
Suggested-by: Ben Gardon <bgardon@google.com>
Reviewed-by: David Matlack <dmatlack@google.com>
Reviewed-by: Ben Gardon <bgardon@google.com>
Signed-off-by: Mingwei Zhang <mizhang@google.com>
Cc: Jing Zhang <jingzhangos@google.com>
Cc: David Matlack <dmatlack@google.com>
Cc: Sean Christopherson <seanjc@google.com>
Message-Id: <20210803044607.599629-4-mizhang@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/mmu.h')
| -rw-r--r-- | arch/x86/kvm/mmu.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86/kvm/mmu.h b/arch/x86/kvm/mmu.h index 59e831a8ab9d..e9688a9f7b57 100644 --- a/arch/x86/kvm/mmu.h +++ b/arch/x86/kvm/mmu.h @@ -261,4 +261,8 @@ kvm_mmu_slot_lpages(struct kvm_memory_slot *slot, int level) return __kvm_mmu_slot_lpages(slot, slot->npages, level); } +static inline void kvm_update_page_stats(struct kvm *kvm, int level, int count) +{ + atomic64_add(count, &kvm->stat.pages[level - 1]); +} #endif |