diff --git a/arch/x86/include/asm/mshyperv.h b/arch/x86/include/asm/mshyperv.h
index aaf59b7da98a2c7898390512c77601cd38b79eb1..188ddfdde2b99a099f010bb232d439f7d7881884 100644
--- a/arch/x86/include/asm/mshyperv.h
+++ b/arch/x86/include/asm/mshyperv.h
@@ -13,6 +13,18 @@ struct ms_hyperv_info {
 
 extern struct ms_hyperv_info ms_hyperv;
 
+/*
+ * Declare the MSR used to setup pages used to communicate with the hypervisor.
+ */
+union hv_x64_msr_hypercall_contents {
+	u64 as_uint64;
+	struct {
+		u64 enable:1;
+		u64 reserved:11;
+		u64 guest_physical_address:52;
+	};
+};
+
 void hyperv_callback_vector(void);
 #ifdef CONFIG_TRACING
 #define trace_hyperv_callback_vector hyperv_callback_vector
diff --git a/drivers/hv/hyperv_vmbus.h b/drivers/hv/hyperv_vmbus.h
index 83beea748c6f9a4c29e1638dd868da807321c001..a1ff03677e239ff5ac18fb6f1cb58fda19284159 100644
--- a/drivers/hv/hyperv_vmbus.h
+++ b/drivers/hv/hyperv_vmbus.h
@@ -306,21 +306,6 @@ union hv_x64_msr_guest_os_id_contents {
 	};
 };
 
-/*
- * Declare the MSR used to setup pages used to communicate with the hypervisor.
- */
-#define HV_X64_MSR_HYPERCALL	0x40000001
-
-union hv_x64_msr_hypercall_contents {
-	u64 as_uint64;
-	struct {
-		u64 enable:1;
-		u64 reserved:11;
-		u64 guest_physical_address:52;
-	};
-};
-
-
 enum {
 	VMBUS_MESSAGE_CONNECTION_ID	= 1,
 	VMBUS_MESSAGE_PORT_ID		= 1,