diff options
Diffstat (limited to 'arch/x86/kvm/mmu.c')
| -rw-r--r-- | arch/x86/kvm/mmu.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c index a2c592b14617..2dafd36368cc 100644 --- a/arch/x86/kvm/mmu.c +++ b/arch/x86/kvm/mmu.c @@ -3596,6 +3596,13 @@ static bool is_shadow_zero_bits_set(struct kvm_mmu *mmu, u64 spte, int level) static bool mmio_info_in_cache(struct kvm_vcpu *vcpu, u64 addr, bool direct) { + /* + * A nested guest cannot use the MMIO cache if it is using nested + * page tables, because cr2 is a nGPA while the cache stores GPAs. + */ + if (mmu_is_nested(vcpu)) + return false; + if (direct) return vcpu_match_mmio_gpa(vcpu, addr); @@ -4841,7 +4848,7 @@ int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t cr2, u64 error_code, { int r, emulation_type = EMULTYPE_RETRY; enum emulation_result er; - bool direct = vcpu->arch.mmu.direct_map || mmu_is_nested(vcpu); + bool direct = vcpu->arch.mmu.direct_map; /* With shadow page tables, fault_address contains a GVA or nGPA. */ if (vcpu->arch.mmu.direct_map) { |