[PATCH] KVM: MMU: Remove invlpg interception

Since we write protect shadowed guest page tables, there is no need to trap
page invalidations (the guest will always change the mapping before issuing
the invlpg instruction).

Signed-off-by: Avi Kivity <avi@qumranet.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 0 insertions, 4 deletions

diff --git a/drivers/kvm/kvm_main.c b/drivers/kvm/kvm_main.c
index 79032438dd16..cec10106ce77 100644
--- a/drivers/kvm/kvm_main.c
+++ b/drivers/kvm/kvm_main.c
@@ -943,10 +943,6 @@ static unsigned long get_segment_base(struct kvm_vcpu *vcpu, int seg)
 
 int emulate_invlpg(struct kvm_vcpu *vcpu, gva_t address)
 {
-        spin_lock(&vcpu->kvm->lock);
-        vcpu->mmu.inval_page(vcpu, address);
-        spin_unlock(&vcpu->kvm->lock);
-        kvm_arch_ops->invlpg(vcpu, address);
         return X86EMUL_CONTINUE;
 }