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authorGlauber Costa <glommer@redhat.com>2010-05-11 12:17:42 -0400
committerAvi Kivity <avi@redhat.com>2010-05-19 11:41:02 +0300
commit0e6ac58acbcddbc9d1687214f0d43d8657cc036c (patch)
treed50f577ac9021e7ccc01c13ff0e7d1c93a9a66b5 /arch
parent11c6bffa42b85e703c21a1d2372dce7262daca8e (diff)
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KVM: x86: add new KVMCLOCK cpuid feature
This cpuid, KVM_CPUID_CLOCKSOURCE2, will indicate to the guest that kvmclock is available through a new set of MSRs. The old ones are deprecated. Signed-off-by: Glauber Costa <glommer@redhat.com> Acked-by: Zachary Amsden <zamsden@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/include/asm/kvm_para.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86/include/asm/kvm_para.h b/arch/x86/include/asm/kvm_para.h
index 9734808..f019f8c 100644
--- a/arch/x86/include/asm/kvm_para.h
+++ b/arch/x86/include/asm/kvm_para.h
@@ -16,6 +16,10 @@
#define KVM_FEATURE_CLOCKSOURCE 0
#define KVM_FEATURE_NOP_IO_DELAY 1
#define KVM_FEATURE_MMU_OP 2
+/* This indicates that the new set of kvmclock msrs
+ * are available. The use of 0x11 and 0x12 is deprecated
+ */
+#define KVM_FEATURE_CLOCKSOURCE2 3
#define MSR_KVM_WALL_CLOCK 0x11
#define MSR_KVM_SYSTEM_TIME 0x12