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-rw-r--r--arch/x86/include/uapi/asm/hyperv.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/include/uapi/asm/hyperv.h b/arch/x86/include/uapi/asm/hyperv.h
index dab584bf7ddf..2677a0aac2cc 100644
--- a/arch/x86/include/uapi/asm/hyperv.h
+++ b/arch/x86/include/uapi/asm/hyperv.h
@@ -156,6 +156,9 @@
/* MSR used to reset the guest OS. */
#define HV_X64_MSR_RESET 0x40000003
+/* MSR used to provide vcpu runtime in 100ns units */
+#define HV_X64_MSR_VP_RUNTIME 0x40000010
+
/* MSR used to read the per-partition time reference counter */
#define HV_X64_MSR_TIME_REF_COUNT 0x40000020