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| author |   Sean Christopherson <seanjc@google.com> | 2022-04-23 03:47:49 +0000 |
|---|---|---|
| committer |   Paolo Bonzini <pbonzini@redhat.com> | 2022-05-12 09:51:43 -0400 |
| commit | 1075d41efd598d3fd4d52a1e1116b20979975135 (patch) | |
| tree | 4ab75f1e4e2f0893dd209e8dc8894d06ec7ebdee /arch/x86/include/asm/kvm_host.h | |
| parent | KVM: x86/mmu: Use IS_ENABLED() to avoid RETPOLINE for TDP page faults (diff) | |
| download | linux-dev-1075d41efd598d3fd4d52a1e1116b20979975135.tar.xz linux-dev-1075d41efd598d3fd4d52a1e1116b20979975135.zip | |
KVM: x86/mmu: Expand and clean up page fault stats
Expand and clean up the page fault stats. The current stats are at best
incomplete, and at worst misleading. Differentiate between faults that
are actually fixed vs those that result in an MMIO SPTE being created,
track faults that are spurious, faults that trigger emulation, faults
that that are fixed in the fast path, and last but not least, track the
number of faults that are taken.
Note, the number of faults that require emulation for write-protected
shadow pages can roughly be calculated by subtracting the number of MMIO
SPTEs created from the overall number of faults that trigger emulation.
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20220423034752.1161007-10-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/include/asm/kvm_host.h')
| -rw-r--r-- | arch/x86/include/asm/kvm_host.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index f164c6c1514a..c5fb4115176d 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -1269,7 +1269,12 @@ struct kvm_vm_stat { struct kvm_vcpu_stat { struct kvm_vcpu_stat_generic generic; + u64 pf_taken; u64 pf_fixed; + u64 pf_emulate; + u64 pf_spurious; + u64 pf_fast; + u64 pf_mmio_spte_created; u64 pf_guest; u64 tlb_flush; u64 invlpg; |