diff options
| author | Ben Gardon <bgardon@google.com> | 2020-10-14 21:26:50 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-10-23 10:42:04 +0300 |
| commit | bb18842e21111a979e2e0e1c5d85c09646f18d51 (patch) | |
| tree | 46eacf0640c467515199b1e99a5fe6e8ef590f62 /arch/x86/kvm/mmu/tdp_mmu.h | |
| parent | 7d94531249a54b822f1a8b20d8a8f8d59ad1d985 (diff) | |
| download | linux-bb18842e21111a979e2e0e1c5d85c09646f18d51.tar.xz | |
kvm: x86/mmu: Add TDP MMU PF handler
Add functions to handle page faults in the TDP MMU. These page faults
are currently handled in much the same way as the x86 shadow paging
based MMU, however the ordering of some operations is slightly
different. Future patches will add eager NX splitting, a fast page fault
handler, and parallel page faults.
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: <20201014182700.2888246-11-bgardon@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/mmu/tdp_mmu.h')
| -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 6de2d007fc03..aed21a7a3bd6 100644 --- a/arch/x86/kvm/mmu/tdp_mmu.h +++ b/arch/x86/kvm/mmu/tdp_mmu.h @@ -14,4 +14,8 @@ void kvm_tdp_mmu_free_root(struct kvm *kvm, struct kvm_mmu_page *root); bool kvm_tdp_mmu_zap_gfn_range(struct kvm *kvm, gfn_t start, gfn_t end); void kvm_tdp_mmu_zap_all(struct kvm *kvm); + +int kvm_tdp_mmu_map(struct kvm_vcpu *vcpu, gpa_t gpa, u32 error_code, + int map_writable, int max_level, kvm_pfn_t pfn, + bool prefault); #endif /* __KVM_X86_MMU_TDP_MMU_H */ |