lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

KVM: VMX: Add ept_sync_context in flush_tlb

Browse Source 
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>
This commit is contained in:
Sheng Yang
2008-07-06 19:16:51 +08:00
committed by Avi Kivity
parent 5a4c928804
commit 4e1096d27f
1 changed files with 3 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
arch/x86/kvm/vmx.c
View File

@@ -91,6 +91,7 @@ static inline struct vcpu_vmx *to_vmx(struct kvm_vcpu *vcpu)
} }
static int init_rmode(struct kvm *kvm); 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 *, vmxarea);
static DEFINE_PER_CPU(struct vmcs *, current_vmcs); 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) static void vmx_flush_tlb(struct kvm_vcpu *vcpu)
{ {
vpid_sync_vcpu_all(to_vmx(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) static void vmx_decache_cr4_guest_bits(struct kvm_vcpu *vcpu)