lkml.org 
[lkml]   [2008]   [Jul]   [30]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[patch 11/62] KVM: VMX: Add ept_sync_context in flush_tlb

2.6.26 -stable review patch. If anyone has any objections, please let
us know.

------------------
From: Sheng Yang <sheng.yang@intel.com>
Original-Commit-Hash: 73f785350b92e1a3af945340f7d10f3978193cba

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>


---
arch/x86/kvm/vmx.c | 3 +++
1 file changed, 3 insertions(+)
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -88,6 +88,7 @@ static inline struct vcpu_vmx *to_vmx(st
}

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);
@@ -1389,6 +1390,8 @@ static void exit_lmode(struct kvm_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)
--


\
 
 \ /
  Last update: 2008-07-31 02:11    [from the cache]
©2003-2014 Jasper Spaans. Advertise on this site