From: Avi Kivity <[EMAIL PROTECTED]>

Signed-off-by: Avi Kivity <[EMAIL PROTECTED]>

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 58cea40..94a2165 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -903,6 +903,7 @@ int kvm_dev_ioctl_check_extension(long ext)
        case KVM_CAP_PIT:
        case KVM_CAP_NOP_IO_DELAY:
        case KVM_CAP_MP_STATE:
+       case KVM_CAP_SYNC_MMU:
                r = 1;
                break;
        case KVM_CAP_COALESCED_MMIO:
diff --git a/include/linux/kvm.h b/include/linux/kvm.h
index 6edba45..d0f957f 100644
--- a/include/linux/kvm.h
+++ b/include/linux/kvm.h
@@ -382,6 +382,7 @@ struct kvm_trace_rec {
 #define KVM_CAP_PV_MMU 13
 #define KVM_CAP_MP_STATE 14
 #define KVM_CAP_COALESCED_MMIO 15
+#define KVM_CAP_SYNC_MMU 16  /* Changes to host mmap are reflected in guest */
 
 /*
  * ioctls for VM fds
--
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