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authorSheng Yang <sheng.yang@intel.com>2008-07-06 07:16:51 -0400
committerAvi Kivity <avi@qumranet.com>2008-07-20 05:42:38 -0400
commit4e1096d27f3d095735c1c69c7b0a26a06a0d454e (patch)
treea729673f80d22b49f145cee1a9d1cbbc3ec0f459
parent5a4c92880493945678315a6df810f7a21f55b985 (diff)
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>
-rw-r--r--arch/x86/kvm/vmx.c3
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)
91} 91}
92 92
93static int init_rmode(struct kvm *kvm); 93static int init_rmode(struct kvm *kvm);
94static u64 construct_eptp(unsigned long root_hpa);
94 95
95static DEFINE_PER_CPU(struct vmcs *, vmxarea); 96static DEFINE_PER_CPU(struct vmcs *, vmxarea);
96static DEFINE_PER_CPU(struct vmcs *, current_vmcs); 97static DEFINE_PER_CPU(struct vmcs *, current_vmcs);
@@ -1422,6 +1423,8 @@ static void exit_lmode(struct kvm_vcpu *vcpu)
1422static void vmx_flush_tlb(struct kvm_vcpu *vcpu) 1423static void vmx_flush_tlb(struct kvm_vcpu *vcpu)
1423{ 1424{
1424 vpid_sync_vcpu_all(to_vmx(vcpu)); 1425 vpid_sync_vcpu_all(to_vmx(vcpu));
1426 if (vm_need_ept())
1427 ept_sync_context(construct_eptp(vcpu->arch.mmu.root_hpa));
1425} 1428}
1426 1429
1427static void vmx_decache_cr4_guest_bits(struct kvm_vcpu *vcpu) 1430static void vmx_decache_cr4_guest_bits(struct kvm_vcpu *vcpu)