KVM: Add statistic for remote tlb flushes

Signed-off-by: Avi Kivity <avi@qumranet.com>
diff --git a/drivers/kvm/x86.c b/drivers/kvm/x86.c
index b482b6a..ac09f38 100644
--- a/drivers/kvm/x86.c
+++ b/drivers/kvm/x86.c
@@ -73,6 +73,7 @@
 	{ "mmu_pde_zapped", VM_STAT(mmu_pde_zapped) },
 	{ "mmu_flooded", VM_STAT(mmu_flooded) },
 	{ "mmu_recycled", VM_STAT(mmu_recycled) },
+	{ "remote_tlb_flush", VM_STAT(remote_tlb_flush) },
 	{ NULL }
 };