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| author | Sheng Yang <sheng.yang@intel.com> | 2008-07-06 13:16:51 +0200 |
|---|---|---|
| committer | Avi Kivity <avi@qumranet.com> | 2008-07-20 11:42:38 +0200 |
| commit | 4e1096d27f3d095735c1c69c7b0a26a06a0d454e (patch) | |
| tree | a729673f80d22b49f145cee1a9d1cbbc3ec0f459 /arch/x86/kvm | |
| parent | KVM: mmu_shrink: kvm_mmu_zap_page requires slots_lock to be held (diff) | |
| download | linux-4e1096d27f3d095735c1c69c7b0a26a06a0d454e.tar.xz linux-4e1096d27f3d095735c1c69c7b0a26a06a0d454e.zip | |
KVM: VMX: Add ept_sync_context in flush_tlb
Fix a potention issue caused by kvm_mmu_slot_remove_write_access(). The
old behavior don't sync EPT TLB with modified EPT entry, which result
in inconsistent content of EPT TLB and EPT table.
Signed-off-by: Sheng Yang <sheng.yang@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
Diffstat (limited to 'arch/x86/kvm')
| -rw-r--r-- | arch/x86/kvm/vmx.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index d493a97e7887..fff3b490976e 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -91,6 +91,7 @@ static inline struct vcpu_vmx *to_vmx(struct kvm_vcpu *vcpu) } static int init_rmode(struct kvm *kvm); +static u64 construct_eptp(unsigned long root_hpa); static DEFINE_PER_CPU(struct vmcs *, vmxarea); static DEFINE_PER_CPU(struct vmcs *, current_vmcs); @@ -1422,6 +1423,8 @@ static void exit_lmode(struct kvm_vcpu *vcpu) static void vmx_flush_tlb(struct kvm_vcpu *vcpu) { vpid_sync_vcpu_all(to_vmx(vcpu)); + if (vm_need_ept()) + ept_sync_context(construct_eptp(vcpu->arch.mmu.root_hpa)); } static void vmx_decache_cr4_guest_bits(struct kvm_vcpu *vcpu) |