KVM: Add constant to represent KVM MSRs enabled bit in guest/host interface

This patch is simple, put in a different commit so it can be more easily
shared between guest and hypervisor. It just defines a named constant
to indicate the enable bit for KVM-specific MSRs.

Signed-off-by: Glauber Costa <[email protected]>
Acked-by: Rik van Riel <[email protected]>
Tested-by: Eric B Munson <[email protected]>
CC: Jeremy Fitzhardinge <[email protected]>
CC: Peter Zijlstra <[email protected]>
CC: Anthony Liguori <[email protected]>
Signed-off-by: Avi Kivity <[email protected]>

diff --git a/arch/x86/include/asm/kvm_para.h b/arch/x86/include/asm/kvm_para.h
index a427bf77a93d8cf0d6892e04d9b32cd886f53c82..d6cd79b34aab72555996ba70eca0e2689f85c26b 100644 (file)
--- a/arch/x86/include/asm/kvm_para.h
+++ b/arch/x86/include/asm/kvm_para.h
@@ -30,6 +30,7 @@
 #define MSR_KVM_WALL_CLOCK  0x11
 #define MSR_KVM_SYSTEM_TIME 0x12
 
+#define KVM_MSR_ENABLED 1
 /* Custom MSRs falls in the range 0x4b564d00-0x4b564dff */
 #define MSR_KVM_WALL_CLOCK_NEW  0x4b564d00
 #define MSR_KVM_SYSTEM_TIME_NEW 0x4b564d01