From: Sheng Yang Date: Sun, 6 Jul 2008 11:16:51 +0000 (+0800) Subject: KVM: VMX: Add ept_sync_context in flush_tlb X-Git-Tag: v2.6.27-rc1~968^2~9 X-Git-Url: http://www.pilppa.org/gitweb/gitweb.cgi?a=commitdiff_plain;h=4e1096d27f3d095735c1c69c7b0a26a06a0d454e;p=linux-2.6-omap-h63xx.git 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 Signed-off-by: Avi Kivity --- 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)