diff --git a/drivers/staging/hv/blkvsc_drv.c b/drivers/staging/hv/blkvsc_drv.c
index 44de488..8cc0b8d 100644
--- a/drivers/staging/hv/blkvsc_drv.c
+++ b/drivers/staging/hv/blkvsc_drv.c
@@ -33,7 +33,6 @@
 #include <scsi/scsi_dbg.h>
 
 #include "hyperv.h"
-#include "hv_api.h"
 #include "storvsc_api.h"
 
 
diff --git a/drivers/staging/hv/channel.c b/drivers/staging/hv/channel.c
index aac59fa..fb7ace6 100644
--- a/drivers/staging/hv/channel.c
+++ b/drivers/staging/hv/channel.c
@@ -29,7 +29,6 @@
 
 #include "hyperv.h"
 #include "hyperv_vmbus.h"
-#include "hv_api.h"
 #include "vmbus_private.h"
 
 #define NUM_PAGES_SPANNED(addr, len) \
diff --git a/drivers/staging/hv/channel_mgmt.c b/drivers/staging/hv/channel_mgmt.c
index c73ae5f..6433ae1 100644
--- a/drivers/staging/hv/channel_mgmt.c
+++ b/drivers/staging/hv/channel_mgmt.c
@@ -31,7 +31,6 @@
 
 #include "hyperv.h"
 #include "hyperv_vmbus.h"
-#include "hv_api.h"
 #include "vmbus_private.h"
 
 struct vmbus_channel_message_table_entry {
diff --git a/drivers/staging/hv/connection.c b/drivers/staging/hv/connection.c
index 663aeed..fda9018 100644
--- a/drivers/staging/hv/connection.c
+++ b/drivers/staging/hv/connection.c
@@ -31,7 +31,6 @@
 
 #include "hyperv.h"
 #include "hyperv_vmbus.h"
-#include "hv_api.h"
 #include "vmbus_private.h"
 
 
diff --git a/drivers/staging/hv/hv.c b/drivers/staging/hv/hv.c
index dede9ce..489504b 100644
--- a/drivers/staging/hv/hv.c
+++ b/drivers/staging/hv/hv.c
@@ -28,7 +28,6 @@
 
 #include "hyperv.h"
 #include "hyperv_vmbus.h"
-#include "hv_api.h"
 #include "vmbus_private.h"
 
 /* The one and only */
diff --git a/drivers/staging/hv/hv.h b/drivers/staging/hv/hv.h
index 829aff81..9b50dc6 100644
--- a/drivers/staging/hv/hv.h
+++ b/drivers/staging/hv/hv.h
@@ -25,7 +25,7 @@
 #ifndef __HV_H__
 #define __HV_H__
 
-#include "hv_api.h"
+#include "hyperv_vmbus.h"
 
 enum {
 	VMBUS_MESSAGE_CONNECTION_ID	= 1,
diff --git a/drivers/staging/hv/hv_api.h b/drivers/staging/hv/hv_api.h
deleted file mode 100644
index 2bc4003..0000000
--- a/drivers/staging/hv/hv_api.h
+++ /dev/null
@@ -1,391 +0,0 @@
-/*
- *
- * Copyright (c) 2009, Microsoft Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
- * Place - Suite 330, Boston, MA 02111-1307 USA.
- *
- * Authors:
- *   Haiyang Zhang <haiyangz@microsoft.com>
- *   Hank Janssen  <hjanssen@microsoft.com>
- *
- */
-#ifndef __HV_API_H
-#define __HV_API_H
-
-/*
- * The below CPUID leaves are present if VersionAndFeatures.HypervisorPresent
- * is set by CPUID(HVCPUID_VERSION_FEATURES).
- */
-enum hv_cpuid_function {
-	HVCPUID_VERSION_FEATURES		= 0x00000001,
-	HVCPUID_VENDOR_MAXFUNCTION		= 0x40000000,
-	HVCPUID_INTERFACE			= 0x40000001,
-
-	/*
-	 * The remaining functions depend on the value of
-	 * HVCPUID_INTERFACE
-	 */
-	HVCPUID_VERSION			= 0x40000002,
-	HVCPUID_FEATURES			= 0x40000003,
-	HVCPUID_ENLIGHTENMENT_INFO	= 0x40000004,
-	HVCPUID_IMPLEMENTATION_LIMITS		= 0x40000005,
-};
-
-/* Define version of the synthetic interrupt controller. */
-#define HV_SYNIC_VERSION		(1)
-
-/* Define the expected SynIC version. */
-#define HV_SYNIC_VERSION_1		(0x1)
-
-/* Define synthetic interrupt controller message constants. */
-#define HV_MESSAGE_SIZE			(256)
-#define HV_MESSAGE_PAYLOAD_BYTE_COUNT	(240)
-#define HV_MESSAGE_PAYLOAD_QWORD_COUNT	(30)
-#define HV_ANY_VP			(0xFFFFFFFF)
-
-/* Define synthetic interrupt controller flag constants. */
-#define HV_EVENT_FLAGS_COUNT		(256 * 8)
-#define HV_EVENT_FLAGS_BYTE_COUNT	(256)
-#define HV_EVENT_FLAGS_DWORD_COUNT	(256 / sizeof(u32))
-
-/* Define hypervisor message types. */
-enum hv_message_type {
-	HVMSG_NONE			= 0x00000000,
-
-	/* Memory access messages. */
-	HVMSG_UNMAPPED_GPA		= 0x80000000,
-	HVMSG_GPA_INTERCEPT		= 0x80000001,
-
-	/* Timer notification messages. */
-	HVMSG_TIMER_EXPIRED			= 0x80000010,
-
-	/* Error messages. */
-	HVMSG_INVALID_VP_REGISTER_VALUE	= 0x80000020,
-	HVMSG_UNRECOVERABLE_EXCEPTION	= 0x80000021,
-	HVMSG_UNSUPPORTED_FEATURE		= 0x80000022,
-
-	/* Trace buffer complete messages. */
-	HVMSG_EVENTLOG_BUFFERCOMPLETE	= 0x80000040,
-
-	/* Platform-specific processor intercept messages. */
-	HVMSG_X64_IOPORT_INTERCEPT		= 0x80010000,
-	HVMSG_X64_MSR_INTERCEPT		= 0x80010001,
-	HVMSG_X64_CPUID_INTERCEPT		= 0x80010002,
-	HVMSG_X64_EXCEPTION_INTERCEPT	= 0x80010003,
-	HVMSG_X64_APIC_EOI			= 0x80010004,
-	HVMSG_X64_LEGACY_FP_ERROR		= 0x80010005
-};
-
-/* Define the number of synthetic interrupt sources. */
-#define HV_SYNIC_SINT_COUNT		(16)
-#define HV_SYNIC_STIMER_COUNT		(4)
-
-/* Define invalid partition identifier. */
-#define HV_PARTITION_ID_INVALID		((u64)0x0)
-
-/* Define connection identifier type. */
-union hv_connection_id {
-	u32 asu32;
-	struct {
-		u32 id:24;
-		u32 reserved:8;
-	} u;
-};
-
-/* Define port identifier type. */
-union hv_port_id {
-	u32 asu32;
-	struct {
-		u32 id:24;
-		u32 reserved:8;
-	} u ;
-};
-
-/* Define port type. */
-enum hv_port_type {
-	HVPORT_MSG	= 1,
-	HVPORT_EVENT		= 2,
-	HVPORT_MONITOR	= 3
-};
-
-/* Define port information structure. */
-struct hv_port_info {
-	enum hv_port_type port_type;
-	u32 padding;
-	union {
-		struct {
-			u32 target_sint;
-			u32 target_vp;
-			u64 rsvdz;
-		} message_port_info;
-		struct {
-			u32 target_sint;
-			u32 target_vp;
-			u16 base_flag_bumber;
-			u16 flag_count;
-			u32 rsvdz;
-		} event_port_info;
-		struct {
-			u64 monitor_address;
-			u64 rsvdz;
-		} monitor_port_info;
-	};
-};
-
-struct hv_connection_info {
-	enum hv_port_type port_type;
-	u32 padding;
-	union {
-		struct {
-			u64 rsvdz;
-		} message_connection_info;
-		struct {
-			u64 rsvdz;
-		} event_connection_info;
-		struct {
-			u64 monitor_address;
-		} monitor_connection_info;
-	};
-};
-
-/* Define synthetic interrupt controller message flags. */
-union hv_message_flags {
-	u8 asu8;
-	struct {
-		u8 msg_pending:1;
-		u8 reserved:7;
-	};
-};
-
-/* Define synthetic interrupt controller message header. */
-struct hv_message_header {
-	enum hv_message_type message_type;
-	u8 payload_size;
-	union hv_message_flags message_flags;
-	u8 reserved[2];
-	union {
-		u64 sender;
-		union hv_port_id port;
-	};
-};
-
-/* Define timer message payload structure. */
-struct hv_timer_message_payload {
-	u32 timer_index;
-	u32 reserved;
-	u64 expiration_time;	/* When the timer expired */
-	u64 delivery_time;	/* When the message was delivered */
-};
-
-/* Define synthetic interrupt controller message format. */
-struct hv_message {
-	struct hv_message_header header;
-	union {
-		u64 payload[HV_MESSAGE_PAYLOAD_QWORD_COUNT];
-	} u ;
-};
-
-/* Define the number of message buffers associated with each port. */
-#define HV_PORT_MESSAGE_BUFFER_COUNT	(16)
-
-/* Define the synthetic interrupt message page layout. */
-struct hv_message_page {
-	struct hv_message sint_message[HV_SYNIC_SINT_COUNT];
-};
-
-/* Define the synthetic interrupt controller event flags format. */
-union hv_synic_event_flags {
-	u8 flags8[HV_EVENT_FLAGS_BYTE_COUNT];
-	u32 flags32[HV_EVENT_FLAGS_DWORD_COUNT];
-};
-
-/* Define the synthetic interrupt flags page layout. */
-struct hv_synic_event_flags_page {
-	union hv_synic_event_flags sintevent_flags[HV_SYNIC_SINT_COUNT];
-};
-
-/* Define SynIC control register. */
-union hv_synic_scontrol {
-	u64 as_uint64;
-	struct {
-		u64 enable:1;
-		u64 reserved:63;
-	};
-};
-
-/* Define synthetic interrupt source. */
-union hv_synic_sint {
-	u64 as_uint64;
-	struct {
-		u64 vector:8;
-		u64 reserved1:8;
-		u64 masked:1;
-		u64 auto_eoi:1;
-		u64 reserved2:46;
-	};
-};
-
-/* Define the format of the SIMP register */
-union hv_synic_simp {
-	u64 as_uint64;
-	struct {
-		u64 simp_enabled:1;
-		u64 preserved:11;
-		u64 base_simp_gpa:52;
-	};
-};
-
-/* Define the format of the SIEFP register */
-union hv_synic_siefp {
-	u64 as_uint64;
-	struct {
-		u64 siefp_enabled:1;
-		u64 preserved:11;
-		u64 base_siefp_gpa:52;
-	};
-};
-
-/* Definitions for the monitored notification facility */
-union hv_monitor_trigger_group {
-	u64 as_uint64;
-	struct {
-		u32 pending;
-		u32 armed;
-	};
-};
-
-struct hv_monitor_parameter {
-	union hv_connection_id connectionid;
-	u16 flagnumber;
-	u16 rsvdz;
-};
-
-union hv_monitor_trigger_state {
-	u32 asu32;
-
-	struct {
-		u32 group_enable:4;
-		u32 rsvdz:28;
-	};
-};
-
-/* struct hv_monitor_page Layout */
-/* ------------------------------------------------------ */
-/* | 0   | TriggerState (4 bytes) | Rsvd1 (4 bytes)     | */
-/* | 8   | TriggerGroup[0]                              | */
-/* | 10  | TriggerGroup[1]                              | */
-/* | 18  | TriggerGroup[2]                              | */
-/* | 20  | TriggerGroup[3]                              | */
-/* | 28  | Rsvd2[0]                                     | */
-/* | 30  | Rsvd2[1]                                     | */
-/* | 38  | Rsvd2[2]                                     | */
-/* | 40  | NextCheckTime[0][0]    | NextCheckTime[0][1] | */
-/* | ...                                                | */
-/* | 240 | Latency[0][0..3]                             | */
-/* | 340 | Rsvz3[0]                                     | */
-/* | 440 | Parameter[0][0]                              | */
-/* | 448 | Parameter[0][1]                              | */
-/* | ...                                                | */
-/* | 840 | Rsvd4[0]                                     | */
-/* ------------------------------------------------------ */
-struct hv_monitor_page {
-	union hv_monitor_trigger_state trigger_state;
-	u32 rsvdz1;
-
-	union hv_monitor_trigger_group trigger_group[4];
-	u64 rsvdz2[3];
-
-	s32 next_checktime[4][32];
-
-	u16 latency[4][32];
-	u64 rsvdz3[32];
-
-	struct hv_monitor_parameter parameter[4][32];
-
-	u8 rsvdz4[1984];
-};
-
-/* Declare the various hypercall operations. */
-enum hv_call_code {
-	HVCALL_POST_MESSAGE	= 0x005c,
-	HVCALL_SIGNAL_EVENT	= 0x005d,
-};
-
-/* Definition of the hv_post_message hypercall input structure. */
-struct hv_input_post_message {
-	union hv_connection_id connectionid;
-	u32 reserved;
-	enum hv_message_type message_type;
-	u32 payload_size;
-	u64 payload[HV_MESSAGE_PAYLOAD_QWORD_COUNT];
-};
-
-/* Definition of the hv_signal_event hypercall input structure. */
-struct hv_input_signal_event {
-	union hv_connection_id connectionid;
-	u16 flag_number;
-	u16 rsvdz;
-};
-
-/*
- * Versioning definitions used for guests reporting themselves to the
- * hypervisor, and visa versa.
- */
-
-/* Version info reported by guest OS's */
-enum hv_guest_os_vendor {
-	HVGUESTOS_VENDOR_MICROSOFT	= 0x0001
-};
-
-enum hv_guest_os_microsoft_ids {
-	HVGUESTOS_MICROSOFT_UNDEFINED	= 0x00,
-	HVGUESTOS_MICROSOFT_MSDOS		= 0x01,
-	HVGUESTOS_MICROSOFT_WINDOWS3X	= 0x02,
-	HVGUESTOS_MICROSOFT_WINDOWS9X	= 0x03,
-	HVGUESTOS_MICROSOFT_WINDOWSNT	= 0x04,
-	HVGUESTOS_MICROSOFT_WINDOWSCE	= 0x05
-};
-
-/*
- * Declare the MSR used to identify the guest OS.
- */
-#define HV_X64_MSR_GUEST_OS_ID	0x40000000
-
-union hv_x64_msr_guest_os_id_contents {
-	u64 as_uint64;
-	struct {
-		u64 build_number:16;
-		u64 service_version:8; /* Service Pack, etc. */
-		u64 minor_version:8;
-		u64 major_version:8;
-		u64 os_id:8; /* enum hv_guest_os_microsoft_ids (if Vendor=MS) */
-		u64 vendor_id:16; /* enum hv_guest_os_vendor */
-	};
-};
-
-/*
- * 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;
-	};
-};
-
-#endif
diff --git a/drivers/staging/hv/hv_kvp.c b/drivers/staging/hv/hv_kvp.c
index 8b74d11..35342cb 100644
--- a/drivers/staging/hv/hv_kvp.c
+++ b/drivers/staging/hv/hv_kvp.c
@@ -28,7 +28,6 @@
 #include <linux/workqueue.h>
 
 #include "hyperv.h"
-#include "hv_api.h"
 #include "vmbus_private.h"
 #include "hv_kvp.h"
 
diff --git a/drivers/staging/hv/hv_mouse.c b/drivers/staging/hv/hv_mouse.c
index 68bb8d2..f4f512c 100644
--- a/drivers/staging/hv/hv_mouse.c
+++ b/drivers/staging/hv/hv_mouse.c
@@ -27,7 +27,6 @@
 #include <linux/delay.h>
 
 #include "hyperv.h"
-#include "hv_api.h"
 
 
 /*
diff --git a/drivers/staging/hv/hv_util.c b/drivers/staging/hv/hv_util.c
index 7e0dc27..981a19a 100644
--- a/drivers/staging/hv/hv_util.c
+++ b/drivers/staging/hv/hv_util.c
@@ -30,7 +30,6 @@
 #include <linux/pci.h>
 
 #include "hyperv.h"
-#include "hv_api.h"
 #include "vmbus_private.h"
 #include "hv_kvp.h"
 
diff --git a/drivers/staging/hv/hyperv_vmbus.h b/drivers/staging/hv/hyperv_vmbus.h
index dafd13b..359d7c9 100644
--- a/drivers/staging/hv/hyperv_vmbus.h
+++ b/drivers/staging/hv/hyperv_vmbus.h
@@ -25,4 +25,369 @@
 #ifndef _HYPERV_VMBUS_H
 #define _HYPERV_VMBUS_H
 
+/*
+ * The below CPUID leaves are present if VersionAndFeatures.HypervisorPresent
+ * is set by CPUID(HVCPUID_VERSION_FEATURES).
+ */
+enum hv_cpuid_function {
+	HVCPUID_VERSION_FEATURES		= 0x00000001,
+	HVCPUID_VENDOR_MAXFUNCTION		= 0x40000000,
+	HVCPUID_INTERFACE			= 0x40000001,
+
+	/*
+	 * The remaining functions depend on the value of
+	 * HVCPUID_INTERFACE
+	 */
+	HVCPUID_VERSION			= 0x40000002,
+	HVCPUID_FEATURES			= 0x40000003,
+	HVCPUID_ENLIGHTENMENT_INFO	= 0x40000004,
+	HVCPUID_IMPLEMENTATION_LIMITS		= 0x40000005,
+};
+
+/* Define version of the synthetic interrupt controller. */
+#define HV_SYNIC_VERSION		(1)
+
+/* Define the expected SynIC version. */
+#define HV_SYNIC_VERSION_1		(0x1)
+
+/* Define synthetic interrupt controller message constants. */
+#define HV_MESSAGE_SIZE			(256)
+#define HV_MESSAGE_PAYLOAD_BYTE_COUNT	(240)
+#define HV_MESSAGE_PAYLOAD_QWORD_COUNT	(30)
+#define HV_ANY_VP			(0xFFFFFFFF)
+
+/* Define synthetic interrupt controller flag constants. */
+#define HV_EVENT_FLAGS_COUNT		(256 * 8)
+#define HV_EVENT_FLAGS_BYTE_COUNT	(256)
+#define HV_EVENT_FLAGS_DWORD_COUNT	(256 / sizeof(u32))
+
+/* Define hypervisor message types. */
+enum hv_message_type {
+	HVMSG_NONE			= 0x00000000,
+
+	/* Memory access messages. */
+	HVMSG_UNMAPPED_GPA		= 0x80000000,
+	HVMSG_GPA_INTERCEPT		= 0x80000001,
+
+	/* Timer notification messages. */
+	HVMSG_TIMER_EXPIRED			= 0x80000010,
+
+	/* Error messages. */
+	HVMSG_INVALID_VP_REGISTER_VALUE	= 0x80000020,
+	HVMSG_UNRECOVERABLE_EXCEPTION	= 0x80000021,
+	HVMSG_UNSUPPORTED_FEATURE		= 0x80000022,
+
+	/* Trace buffer complete messages. */
+	HVMSG_EVENTLOG_BUFFERCOMPLETE	= 0x80000040,
+
+	/* Platform-specific processor intercept messages. */
+	HVMSG_X64_IOPORT_INTERCEPT		= 0x80010000,
+	HVMSG_X64_MSR_INTERCEPT		= 0x80010001,
+	HVMSG_X64_CPUID_INTERCEPT		= 0x80010002,
+	HVMSG_X64_EXCEPTION_INTERCEPT	= 0x80010003,
+	HVMSG_X64_APIC_EOI			= 0x80010004,
+	HVMSG_X64_LEGACY_FP_ERROR		= 0x80010005
+};
+
+/* Define the number of synthetic interrupt sources. */
+#define HV_SYNIC_SINT_COUNT		(16)
+#define HV_SYNIC_STIMER_COUNT		(4)
+
+/* Define invalid partition identifier. */
+#define HV_PARTITION_ID_INVALID		((u64)0x0)
+
+/* Define connection identifier type. */
+union hv_connection_id {
+	u32 asu32;
+	struct {
+		u32 id:24;
+		u32 reserved:8;
+	} u;
+};
+
+/* Define port identifier type. */
+union hv_port_id {
+	u32 asu32;
+	struct {
+		u32 id:24;
+		u32 reserved:8;
+	} u ;
+};
+
+/* Define port type. */
+enum hv_port_type {
+	HVPORT_MSG	= 1,
+	HVPORT_EVENT		= 2,
+	HVPORT_MONITOR	= 3
+};
+
+/* Define port information structure. */
+struct hv_port_info {
+	enum hv_port_type port_type;
+	u32 padding;
+	union {
+		struct {
+			u32 target_sint;
+			u32 target_vp;
+			u64 rsvdz;
+		} message_port_info;
+		struct {
+			u32 target_sint;
+			u32 target_vp;
+			u16 base_flag_bumber;
+			u16 flag_count;
+			u32 rsvdz;
+		} event_port_info;
+		struct {
+			u64 monitor_address;
+			u64 rsvdz;
+		} monitor_port_info;
+	};
+};
+
+struct hv_connection_info {
+	enum hv_port_type port_type;
+	u32 padding;
+	union {
+		struct {
+			u64 rsvdz;
+		} message_connection_info;
+		struct {
+			u64 rsvdz;
+		} event_connection_info;
+		struct {
+			u64 monitor_address;
+		} monitor_connection_info;
+	};
+};
+
+/* Define synthetic interrupt controller message flags. */
+union hv_message_flags {
+	u8 asu8;
+	struct {
+		u8 msg_pending:1;
+		u8 reserved:7;
+	};
+};
+
+/* Define synthetic interrupt controller message header. */
+struct hv_message_header {
+	enum hv_message_type message_type;
+	u8 payload_size;
+	union hv_message_flags message_flags;
+	u8 reserved[2];
+	union {
+		u64 sender;
+		union hv_port_id port;
+	};
+};
+
+/* Define timer message payload structure. */
+struct hv_timer_message_payload {
+	u32 timer_index;
+	u32 reserved;
+	u64 expiration_time;	/* When the timer expired */
+	u64 delivery_time;	/* When the message was delivered */
+};
+
+/* Define synthetic interrupt controller message format. */
+struct hv_message {
+	struct hv_message_header header;
+	union {
+		u64 payload[HV_MESSAGE_PAYLOAD_QWORD_COUNT];
+	} u ;
+};
+
+/* Define the number of message buffers associated with each port. */
+#define HV_PORT_MESSAGE_BUFFER_COUNT	(16)
+
+/* Define the synthetic interrupt message page layout. */
+struct hv_message_page {
+	struct hv_message sint_message[HV_SYNIC_SINT_COUNT];
+};
+
+/* Define the synthetic interrupt controller event flags format. */
+union hv_synic_event_flags {
+	u8 flags8[HV_EVENT_FLAGS_BYTE_COUNT];
+	u32 flags32[HV_EVENT_FLAGS_DWORD_COUNT];
+};
+
+/* Define the synthetic interrupt flags page layout. */
+struct hv_synic_event_flags_page {
+	union hv_synic_event_flags sintevent_flags[HV_SYNIC_SINT_COUNT];
+};
+
+/* Define SynIC control register. */
+union hv_synic_scontrol {
+	u64 as_uint64;
+	struct {
+		u64 enable:1;
+		u64 reserved:63;
+	};
+};
+
+/* Define synthetic interrupt source. */
+union hv_synic_sint {
+	u64 as_uint64;
+	struct {
+		u64 vector:8;
+		u64 reserved1:8;
+		u64 masked:1;
+		u64 auto_eoi:1;
+		u64 reserved2:46;
+	};
+};
+
+/* Define the format of the SIMP register */
+union hv_synic_simp {
+	u64 as_uint64;
+	struct {
+		u64 simp_enabled:1;
+		u64 preserved:11;
+		u64 base_simp_gpa:52;
+	};
+};
+
+/* Define the format of the SIEFP register */
+union hv_synic_siefp {
+	u64 as_uint64;
+	struct {
+		u64 siefp_enabled:1;
+		u64 preserved:11;
+		u64 base_siefp_gpa:52;
+	};
+};
+
+/* Definitions for the monitored notification facility */
+union hv_monitor_trigger_group {
+	u64 as_uint64;
+	struct {
+		u32 pending;
+		u32 armed;
+	};
+};
+
+struct hv_monitor_parameter {
+	union hv_connection_id connectionid;
+	u16 flagnumber;
+	u16 rsvdz;
+};
+
+union hv_monitor_trigger_state {
+	u32 asu32;
+
+	struct {
+		u32 group_enable:4;
+		u32 rsvdz:28;
+	};
+};
+
+/* struct hv_monitor_page Layout */
+/* ------------------------------------------------------ */
+/* | 0   | TriggerState (4 bytes) | Rsvd1 (4 bytes)     | */
+/* | 8   | TriggerGroup[0]                              | */
+/* | 10  | TriggerGroup[1]                              | */
+/* | 18  | TriggerGroup[2]                              | */
+/* | 20  | TriggerGroup[3]                              | */
+/* | 28  | Rsvd2[0]                                     | */
+/* | 30  | Rsvd2[1]                                     | */
+/* | 38  | Rsvd2[2]                                     | */
+/* | 40  | NextCheckTime[0][0]    | NextCheckTime[0][1] | */
+/* | ...                                                | */
+/* | 240 | Latency[0][0..3]                             | */
+/* | 340 | Rsvz3[0]                                     | */
+/* | 440 | Parameter[0][0]                              | */
+/* | 448 | Parameter[0][1]                              | */
+/* | ...                                                | */
+/* | 840 | Rsvd4[0]                                     | */
+/* ------------------------------------------------------ */
+struct hv_monitor_page {
+	union hv_monitor_trigger_state trigger_state;
+	u32 rsvdz1;
+
+	union hv_monitor_trigger_group trigger_group[4];
+	u64 rsvdz2[3];
+
+	s32 next_checktime[4][32];
+
+	u16 latency[4][32];
+	u64 rsvdz3[32];
+
+	struct hv_monitor_parameter parameter[4][32];
+
+	u8 rsvdz4[1984];
+};
+
+/* Declare the various hypercall operations. */
+enum hv_call_code {
+	HVCALL_POST_MESSAGE	= 0x005c,
+	HVCALL_SIGNAL_EVENT	= 0x005d,
+};
+
+/* Definition of the hv_post_message hypercall input structure. */
+struct hv_input_post_message {
+	union hv_connection_id connectionid;
+	u32 reserved;
+	enum hv_message_type message_type;
+	u32 payload_size;
+	u64 payload[HV_MESSAGE_PAYLOAD_QWORD_COUNT];
+};
+
+/* Definition of the hv_signal_event hypercall input structure. */
+struct hv_input_signal_event {
+	union hv_connection_id connectionid;
+	u16 flag_number;
+	u16 rsvdz;
+};
+
+/*
+ * Versioning definitions used for guests reporting themselves to the
+ * hypervisor, and visa versa.
+ */
+
+/* Version info reported by guest OS's */
+enum hv_guest_os_vendor {
+	HVGUESTOS_VENDOR_MICROSOFT	= 0x0001
+};
+
+enum hv_guest_os_microsoft_ids {
+	HVGUESTOS_MICROSOFT_UNDEFINED	= 0x00,
+	HVGUESTOS_MICROSOFT_MSDOS		= 0x01,
+	HVGUESTOS_MICROSOFT_WINDOWS3X	= 0x02,
+	HVGUESTOS_MICROSOFT_WINDOWS9X	= 0x03,
+	HVGUESTOS_MICROSOFT_WINDOWSNT	= 0x04,
+	HVGUESTOS_MICROSOFT_WINDOWSCE	= 0x05
+};
+
+/*
+ * Declare the MSR used to identify the guest OS.
+ */
+#define HV_X64_MSR_GUEST_OS_ID	0x40000000
+
+union hv_x64_msr_guest_os_id_contents {
+	u64 as_uint64;
+	struct {
+		u64 build_number:16;
+		u64 service_version:8; /* Service Pack, etc. */
+		u64 minor_version:8;
+		u64 major_version:8;
+		u64 os_id:8; /* enum hv_guest_os_microsoft_ids (if Vendor=MS) */
+		u64 vendor_id:16; /* enum hv_guest_os_vendor */
+	};
+};
+
+/*
+ * 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;
+	};
+};
+
 #endif /* _HYPERV_VMBUS_H */
diff --git a/drivers/staging/hv/netvsc.c b/drivers/staging/hv/netvsc.c
index 447cca7..c665d88 100644
--- a/drivers/staging/hv/netvsc.c
+++ b/drivers/staging/hv/netvsc.c
@@ -29,7 +29,6 @@
 #include <linux/slab.h>
 
 #include "hyperv.h"
-#include "hv_api.h"
 #include "netvsc.h"
 #include "rndis_filter.h"
 
diff --git a/drivers/staging/hv/netvsc_drv.c b/drivers/staging/hv/netvsc_drv.c
index b732d06..4e29952 100644
--- a/drivers/staging/hv/netvsc_drv.c
+++ b/drivers/staging/hv/netvsc_drv.c
@@ -40,7 +40,6 @@
 #include <net/pkt_sched.h>
 
 #include "hyperv.h"
-#include "hv_api.h"
 #include "netvsc_api.h"
 
 struct net_device_context {
diff --git a/drivers/staging/hv/rndis_filter.c b/drivers/staging/hv/rndis_filter.c
index c6cb810..21818e2 100644
--- a/drivers/staging/hv/rndis_filter.c
+++ b/drivers/staging/hv/rndis_filter.c
@@ -28,7 +28,6 @@
 #include <linux/netdevice.h>
 
 #include "hyperv.h"
-#include "hv_api.h"
 #include "netvsc_api.h"
 #include "rndis_filter.h"
 
diff --git a/drivers/staging/hv/storvsc.c b/drivers/staging/hv/storvsc.c
index b594fbf..dc8bb53 100644
--- a/drivers/staging/hv/storvsc.c
+++ b/drivers/staging/hv/storvsc.c
@@ -29,7 +29,6 @@
 #include <linux/delay.h>
 
 #include "hyperv.h"
-#include "hv_api.h"
 #include "storvsc_api.h"
 #include "vstorage.h"
 
diff --git a/drivers/staging/hv/storvsc_drv.c b/drivers/staging/hv/storvsc_drv.c
index 0a3035b..3a0b284 100644
--- a/drivers/staging/hv/storvsc_drv.c
+++ b/drivers/staging/hv/storvsc_drv.c
@@ -34,7 +34,6 @@
 #include <scsi/scsi_dbg.h>
 
 #include "hyperv.h"
-#include "hv_api.h"
 #include "storvsc_api.h"
 #include "vstorage.h"
 
diff --git a/drivers/staging/hv/vmbus_drv.c b/drivers/staging/hv/vmbus_drv.c
index d12c88d..25183cd 100644
--- a/drivers/staging/hv/vmbus_drv.c
+++ b/drivers/staging/hv/vmbus_drv.c
@@ -37,7 +37,6 @@
 
 #include "hyperv.h"
 #include "hyperv_vmbus.h"
-#include "hv_api.h"
 #include "vmbus_private.h"