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| author |   Ben Gardon <bgardon@google.com> | 2020-10-14 11:26:53 -0700 |
|---|---|---|
| committer |   Paolo Bonzini <pbonzini@redhat.com> | 2020-10-23 03:42:12 -0400 |
| commit | f8e144971c6834fa1e171be4cd8026f8bc537bca (patch) | |
| tree | 20146e504a64852a8f056a6bf6dd69d97e455334 /arch/x86/kvm/mmu/tdp_mmu.h | |
| parent | kvm: x86/mmu: Support invalidate range MMU notifier for TDP MMU (diff) | |
| download | linux-dev-f8e144971c6834fa1e171be4cd8026f8bc537bca.tar.xz linux-dev-f8e144971c6834fa1e171be4cd8026f8bc537bca.zip | |
kvm: x86/mmu: Add access tracking for tdp_mmu
In order to interoperate correctly with the rest of KVM and other Linux
subsystems, the TDP MMU must correctly handle various MMU notifiers. The
main Linux MM uses the access tracking MMU notifiers for swap and other
features. Add hooks to handle the test/flush HVA (range) family of
MMU notifiers.
Tested by running kvm-unit-tests and KVM selftests on an Intel Haswell
machine. This series introduced no new failures.
This series can be viewed in Gerrit at:
https://linux-review.googlesource.com/c/virt/kvm/kvm/+/2538
Signed-off-by: Ben Gardon <bgardon@google.com>
Message-Id: <20201014182700.2888246-14-bgardon@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to '')
| -rw-r--r-- | arch/x86/kvm/mmu/tdp_mmu.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86/kvm/mmu/tdp_mmu.h b/arch/x86/kvm/mmu/tdp_mmu.h index af25d2462cb8..ddc1bf12d0fc 100644 --- a/arch/x86/kvm/mmu/tdp_mmu.h +++ b/arch/x86/kvm/mmu/tdp_mmu.h @@ -21,4 +21,8 @@ int kvm_tdp_mmu_map(struct kvm_vcpu *vcpu, gpa_t gpa, u32 error_code, int kvm_tdp_mmu_zap_hva_range(struct kvm *kvm, unsigned long start, unsigned long end); + +int kvm_tdp_mmu_age_hva_range(struct kvm *kvm, unsigned long start, + unsigned long end); +int kvm_tdp_mmu_test_age_hva(struct kvm *kvm, unsigned long hva); #endif /* __KVM_X86_MMU_TDP_MMU_H */ |