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authorBen Gardon <bgardon@google.com>2020-10-14 21:26:47 +0300
committerPaolo Bonzini <pbonzini@redhat.com>2020-10-22 01:17:02 +0300
commitfaaf05b00aecdb347ffd1d763d024394ec0329f8 (patch)
tree6054d3a1c0128da3113bb8b7250fed3b17385909 /arch/x86/kvm/mmu/tdp_mmu.h
parent9e9eb226b91225fc199bbafc06f3cd70bfce0100 (diff)
downloadlinux-faaf05b00aecdb347ffd1d763d024394ec0329f8.tar.xz
kvm: x86/mmu: Support zapping SPTEs in the TDP MMU
Add functions to zap SPTEs to the TDP MMU. These are needed to tear down TDP MMU roots properly and implement other MMU functions which require tearing down mappings. Future patches will add functions to populate the page tables, but as for this patch there will not be any work for these functions to do. 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: <20201014182700.2888246-8-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.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/kvm/mmu/tdp_mmu.h b/arch/x86/kvm/mmu/tdp_mmu.h
index ac0ef9129442..6de2d007fc03 100644
--- a/arch/x86/kvm/mmu/tdp_mmu.h
+++ b/arch/x86/kvm/mmu/tdp_mmu.h
@@ -12,4 +12,6 @@ bool is_tdp_mmu_root(struct kvm *kvm, hpa_t root);
hpa_t kvm_tdp_mmu_get_vcpu_root_hpa(struct kvm_vcpu *vcpu);
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);
#endif /* __KVM_X86_MMU_TDP_MMU_H */