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| author | Ben Gardon <bgardon@google.com> | 2020-10-14 11:26:52 -0700 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-10-23 03:42:11 -0400 |
| commit | 063afacd8730be3d9a3d50f9ea730f840265aba0 (patch) | |
| tree | de85b358beb10da84e0a29939b9ffe2cacacc939 /arch/x86/kvm/mmu/mmu.c | |
| parent | 89c0fd494af3912d32ba5765b7147f36a34d1fa3 (diff) | |
| download | lwn-063afacd8730be3d9a3d50f9ea730f840265aba0.tar.gz lwn-063afacd8730be3d9a3d50f9ea730f840265aba0.zip | |
kvm: x86/mmu: Support invalidate range MMU notifier 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. Add
hooks to handle the invalidate 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: <20201014182700.2888246-13-bgardon@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/mmu/mmu.c')
| -rw-r--r-- | arch/x86/kvm/mmu/mmu.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c index 31d7ba716b44..35c277ed6c78 100644 --- a/arch/x86/kvm/mmu/mmu.c +++ b/arch/x86/kvm/mmu/mmu.c @@ -1497,7 +1497,14 @@ static int kvm_handle_hva(struct kvm *kvm, unsigned long hva, int kvm_unmap_hva_range(struct kvm *kvm, unsigned long start, unsigned long end, unsigned flags) { - return kvm_handle_hva_range(kvm, start, end, 0, kvm_unmap_rmapp); + int r; + + r = kvm_handle_hva_range(kvm, start, end, 0, kvm_unmap_rmapp); + + if (kvm->arch.tdp_mmu_enabled) + r |= kvm_tdp_mmu_zap_hva_range(kvm, start, end); + + return r; } int kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte) |