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authorSheng Yang <sheng.yang@intel.com>2008-07-06 19:16:51 +0800
committerAvi Kivity <avi@qumranet.com>2008-07-20 12:42:38 +0300
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 d493a97e788..fff3b490976 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)