include/asm-x86/xen/hypercall.h - maze/linux - Git at Google

 /******************************************************************************
  * hypercall.h
  *
  * Linux-specific hypervisor handling.
  *
  * Copyright (c) 2002-2004, K A Fraser
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License version 2
  * as published by the Free Software Foundation; or, when distributed
  * separately from the Linux kernel or incorporated into other
  * software packages, subject to the following license:
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this source file (the "Software"), to deal in the Software without
  * restriction, including without limitation the rights to use, copy, modify,
  * merge, publish, distribute, sublicense, and/or sell copies of the Software,
  * and to permit persons to whom the Software is furnished to do so, subject to
  * the following conditions:
  *
  * The above copyright notice and this permission notice shall be included in
  * all copies or substantial portions of the Software.
  *
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  * IN THE SOFTWARE.
  */

 #ifndef __HYPERCALL_H__
 #define __HYPERCALL_H__

 #include <linux/errno.h>
 #include <linux/string.h>

 #include <xen/interface/xen.h>
 #include <xen/interface/sched.h>
 #include <xen/interface/physdev.h>

 extern struct { char _entry[32]; } hypercall_page[];

 #define _hypercall0(type, name)						\
 ({									\
 	long __res;							\
 	asm volatile (							\
 		"call %[call]"						\
 		: "=a" (__res)						\
 		: [call] "m" (hypercall_page[__HYPERVISOR_##name])	\
 		: "memory" );						\
 	(type)__res;							\
 })

 #define _hypercall1(type, name, a1)					\
 ({									\
 	long __res, __ign1;						\
 	asm volatile (							\
 		"call %[call]"						\
 		: "=a" (__res), "=b" (__ign1)				\
 		: "1" ((long)(a1)),					\
 		  [call] "m" (hypercall_page[__HYPERVISOR_##name])	\
 		: "memory" );						\
 	(type)__res;							\
 })

 #define _hypercall2(type, name, a1, a2)					\
 ({									\
 	long __res, __ign1, __ign2;					\
 	asm volatile (							\
 		"call %[call]"						\
 		: "=a" (__res), "=b" (__ign1), "=c" (__ign2)		\
 		: "1" ((long)(a1)), "2" ((long)(a2)),			\
 		  [call] "m" (hypercall_page[__HYPERVISOR_##name])	\
 		: "memory" );						\
 	(type)__res;							\
 })

 #define _hypercall3(type, name, a1, a2, a3)				\
 ({									\
 	long __res, __ign1, __ign2, __ign3;				\
 	asm volatile (							\
 		"call %[call]"						\
 		: "=a" (__res), "=b" (__ign1), "=c" (__ign2),		\
 		"=d" (__ign3)						\
 		: "1" ((long)(a1)), "2" ((long)(a2)),			\
 		  "3" ((long)(a3)),					\
 		  [call] "m" (hypercall_page[__HYPERVISOR_##name])	\
 		: "memory" );						\
 	(type)__res;							\
 })

 #define _hypercall4(type, name, a1, a2, a3, a4)				\
 ({									\
 	long __res, __ign1, __ign2, __ign3, __ign4;			\
 	asm volatile (							\
 		"call %[call]"						\
 		: "=a" (__res), "=b" (__ign1), "=c" (__ign2),		\
 		"=d" (__ign3), "=S" (__ign4)				\
 		: "1" ((long)(a1)), "2" ((long)(a2)),			\
 		  "3" ((long)(a3)), "4" ((long)(a4)),			\
 		  [call] "m" (hypercall_page[__HYPERVISOR_##name])	\
 		: "memory" );						\
 	(type)__res;							\
 })

 #define _hypercall5(type, name, a1, a2, a3, a4, a5)			\
 ({									\
 	long __res, __ign1, __ign2, __ign3, __ign4, __ign5;		\
 	asm volatile (							\
 		"call %[call]"						\
 		: "=a" (__res), "=b" (__ign1), "=c" (__ign2),		\
 		"=d" (__ign3), "=S" (__ign4), "=D" (__ign5)		\
 		: "1" ((long)(a1)), "2" ((long)(a2)),			\
 		  "3" ((long)(a3)), "4" ((long)(a4)),			\
 		  "5" ((long)(a5)),					\
 		  [call] "m" (hypercall_page[__HYPERVISOR_##name])	\
 		: "memory" );						\
 	(type)__res;							\
 })

 static inline int
 HYPERVISOR_set_trap_table(struct trap_info *table)
 {
 	return _hypercall1(int, set_trap_table, table);
 }

 static inline int
 HYPERVISOR_mmu_update(struct mmu_update *req, int count,
 		      int *success_count, domid_t domid)
 {
 	return _hypercall4(int, mmu_update, req, count, success_count, domid);
 }

 static inline int
 HYPERVISOR_mmuext_op(struct mmuext_op *op, int count,
 		     int *success_count, domid_t domid)
 {
 	return _hypercall4(int, mmuext_op, op, count, success_count, domid);
 }

 static inline int
 HYPERVISOR_set_gdt(unsigned long *frame_list, int entries)
 {
 	return _hypercall2(int, set_gdt, frame_list, entries);
 }

 static inline int
 HYPERVISOR_stack_switch(unsigned long ss, unsigned long esp)
 {
 	return _hypercall2(int, stack_switch, ss, esp);
 }

 static inline int
 HYPERVISOR_set_callbacks(unsigned long event_selector,
 			 unsigned long event_address,
 			 unsigned long failsafe_selector,
 			 unsigned long failsafe_address)
 {
 	return _hypercall4(int, set_callbacks,
 			   event_selector, event_address,
 			   failsafe_selector, failsafe_address);
 }

 static inline int
 HYPERVISOR_callback_op(int cmd, void *arg)
 {
 	return _hypercall2(int, callback_op, cmd, arg);
 }

 static inline int
 HYPERVISOR_fpu_taskswitch(int set)
 {
 	return _hypercall1(int, fpu_taskswitch, set);
 }

 static inline int
 HYPERVISOR_sched_op(int cmd, void *arg)
 {
 	return _hypercall2(int, sched_op_new, cmd, arg);
 }

 static inline long
 HYPERVISOR_set_timer_op(u64 timeout)
 {
 	unsigned long timeout_hi = (unsigned long)(timeout>>32);
 	unsigned long timeout_lo = (unsigned long)timeout;
 	return _hypercall2(long, set_timer_op, timeout_lo, timeout_hi);
 }

 static inline int
 HYPERVISOR_set_debugreg(int reg, unsigned long value)
 {
 	return _hypercall2(int, set_debugreg, reg, value);
 }

 static inline unsigned long
 HYPERVISOR_get_debugreg(int reg)
 {
 	return _hypercall1(unsigned long, get_debugreg, reg);
 }

 static inline int
 HYPERVISOR_update_descriptor(u64 ma, u64 desc)
 {
 	return _hypercall4(int, update_descriptor, ma, ma>>32, desc, desc>>32);
 }

 static inline int
 HYPERVISOR_memory_op(unsigned int cmd, void *arg)
 {
 	return _hypercall2(int, memory_op, cmd, arg);
 }

 static inline int
 HYPERVISOR_multicall(void *call_list, int nr_calls)
 {
 	return _hypercall2(int, multicall, call_list, nr_calls);
 }

 static inline int
 HYPERVISOR_update_va_mapping(unsigned long va, pte_t new_val,
 			     unsigned long flags)
 {
 	unsigned long pte_hi = 0;
 #ifdef CONFIG_X86_PAE
 	pte_hi = new_val.pte_high;
 #endif
 	return _hypercall4(int, update_va_mapping, va,
 			   new_val.pte_low, pte_hi, flags);
 }

 static inline int
 HYPERVISOR_event_channel_op(int cmd, void *arg)
 {
 	int rc = _hypercall2(int, event_channel_op, cmd, arg);
 	if (unlikely(rc == -ENOSYS)) {
 		struct evtchn_op op;
 		op.cmd = cmd;
 		memcpy(&op.u, arg, sizeof(op.u));
 		rc = _hypercall1(int, event_channel_op_compat, &op);
 		memcpy(arg, &op.u, sizeof(op.u));
 	}
 	return rc;
 }

 static inline int
 HYPERVISOR_xen_version(int cmd, void *arg)
 {
 	return _hypercall2(int, xen_version, cmd, arg);
 }

 static inline int
 HYPERVISOR_console_io(int cmd, int count, char *str)
 {
 	return _hypercall3(int, console_io, cmd, count, str);
 }

 static inline int
 HYPERVISOR_physdev_op(int cmd, void *arg)
 {
 	int rc = _hypercall2(int, physdev_op, cmd, arg);
 	if (unlikely(rc == -ENOSYS)) {
 		struct physdev_op op;
 		op.cmd = cmd;
 		memcpy(&op.u, arg, sizeof(op.u));
 		rc = _hypercall1(int, physdev_op_compat, &op);
 		memcpy(arg, &op.u, sizeof(op.u));
 	}
 	return rc;
 }

 static inline int
 HYPERVISOR_grant_table_op(unsigned int cmd, void *uop, unsigned int count)
 {
 	return _hypercall3(int, grant_table_op, cmd, uop, count);
 }

 static inline int
 HYPERVISOR_update_va_mapping_otherdomain(unsigned long va, pte_t new_val,
 					 unsigned long flags, domid_t domid)
 {
 	unsigned long pte_hi = 0;
 #ifdef CONFIG_X86_PAE
 	pte_hi = new_val.pte_high;
 #endif
 	return _hypercall5(int, update_va_mapping_otherdomain, va,
 			   new_val.pte_low, pte_hi, flags, domid);
 }

 static inline int
 HYPERVISOR_vm_assist(unsigned int cmd, unsigned int type)
 {
 	return _hypercall2(int, vm_assist, cmd, type);
 }

 static inline int
 HYPERVISOR_vcpu_op(int cmd, int vcpuid, void *extra_args)
 {
 	return _hypercall3(int, vcpu_op, cmd, vcpuid, extra_args);
 }

 static inline int
 HYPERVISOR_suspend(unsigned long srec)
 {
 	return _hypercall3(int, sched_op, SCHEDOP_shutdown,
 			   SHUTDOWN_suspend, srec);
 }

 static inline int
 HYPERVISOR_nmi_op(unsigned long op, unsigned long arg)
 {
 	return _hypercall2(int, nmi_op, op, arg);
 }

 static inline void
 MULTI_fpu_taskswitch(struct multicall_entry *mcl, int set)
 {
 	mcl->op = __HYPERVISOR_fpu_taskswitch;
 	mcl->args[0] = set;
 }

 static inline void
 MULTI_update_va_mapping(struct multicall_entry *mcl, unsigned long va,
 			pte_t new_val, unsigned long flags)
 {
 	mcl->op = __HYPERVISOR_update_va_mapping;
 	mcl->args[0] = va;
 #ifdef CONFIG_X86_PAE
 	mcl->args[1] = new_val.pte_low;
 	mcl->args[2] = new_val.pte_high;
 #else
 	mcl->args[1] = new_val.pte_low;
 	mcl->args[2] = 0;
 #endif
 	mcl->args[3] = flags;
 }

 static inline void
 MULTI_grant_table_op(struct multicall_entry *mcl, unsigned int cmd,
 		     void *uop, unsigned int count)
 {
 	mcl->op = __HYPERVISOR_grant_table_op;
 	mcl->args[0] = cmd;
 	mcl->args[1] = (unsigned long)uop;
 	mcl->args[2] = count;
 }

 static inline void
 MULTI_update_va_mapping_otherdomain(struct multicall_entry *mcl, unsigned long va,
 				    pte_t new_val, unsigned long flags,
 				    domid_t domid)
 {
 	mcl->op = __HYPERVISOR_update_va_mapping_otherdomain;
 	mcl->args[0] = va;
 #ifdef CONFIG_X86_PAE
 	mcl->args[1] = new_val.pte_low;
 	mcl->args[2] = new_val.pte_high;
 #else
 	mcl->args[1] = new_val.pte_low;
 	mcl->args[2] = 0;
 #endif
 	mcl->args[3] = flags;
 	mcl->args[4] = domid;
 }

 static inline void
 MULTI_update_descriptor(struct multicall_entry *mcl, u64 maddr,
 			struct desc_struct desc)
 {
 	mcl->op = __HYPERVISOR_update_descriptor;
 	mcl->args[0] = maddr;
 	mcl->args[1] = maddr >> 32;
 	mcl->args[2] = desc.a;
 	mcl->args[3] = desc.b;
 }

 static inline void
 MULTI_memory_op(struct multicall_entry *mcl, unsigned int cmd, void *arg)
 {
 	mcl->op = __HYPERVISOR_memory_op;
 	mcl->args[0] = cmd;
 	mcl->args[1] = (unsigned long)arg;
 }

 static inline void
 MULTI_mmu_update(struct multicall_entry *mcl, struct mmu_update *req,
 		 int count, int *success_count, domid_t domid)
 {
 	mcl->op = __HYPERVISOR_mmu_update;
 	mcl->args[0] = (unsigned long)req;
 	mcl->args[1] = count;
 	mcl->args[2] = (unsigned long)success_count;
 	mcl->args[3] = domid;
 }

 static inline void
 MULTI_mmuext_op(struct multicall_entry *mcl, struct mmuext_op *op, int count,
 		int *success_count, domid_t domid)
 {
 	mcl->op = __HYPERVISOR_mmuext_op;
 	mcl->args[0] = (unsigned long)op;
 	mcl->args[1] = count;
 	mcl->args[2] = (unsigned long)success_count;
 	mcl->args[3] = domid;
 }

 static inline void
 MULTI_set_gdt(struct multicall_entry *mcl, unsigned long *frames, int entries)
 {
 	mcl->op = __HYPERVISOR_set_gdt;
 	mcl->args[0] = (unsigned long)frames;
 	mcl->args[1] = entries;
 }

 static inline void
 MULTI_stack_switch(struct multicall_entry *mcl,
 		   unsigned long ss, unsigned long esp)
 {
 	mcl->op = __HYPERVISOR_stack_switch;
 	mcl->args[0] = ss;
 	mcl->args[1] = esp;
 }

 #endif /* __HYPERCALL_H__ */
	/******************************************************************************
	* hypercall.h
	*
	* Linux-specific hypervisor handling.
	*
	* Copyright (c) 2002-2004, K A Fraser
	*
	* This program is free software; you can redistribute it and/or
	* modify it under the terms of the GNU General Public License version 2
	* as published by the Free Software Foundation; or, when distributed
	* separately from the Linux kernel or incorporated into other
	* software packages, subject to the following license:
	*
	* Permission is hereby granted, free of charge, to any person obtaining a copy
	* of this source file (the "Software"), to deal in the Software without
	* restriction, including without limitation the rights to use, copy, modify,
	* merge, publish, distribute, sublicense, and/or sell copies of the Software,
	* and to permit persons to whom the Software is furnished to do so, subject to
	* the following conditions:
	*
	* The above copyright notice and this permission notice shall be included in
	* all copies or substantial portions of the Software.
	*
	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
	* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
	* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
	* IN THE SOFTWARE.
	*/

	#ifndef __HYPERCALL_H__
	#define __HYPERCALL_H__

	#include <linux/errno.h>
	#include <linux/string.h>

	#include <xen/interface/xen.h>
	#include <xen/interface/sched.h>
	#include <xen/interface/physdev.h>

	extern struct { char _entry[32]; } hypercall_page[];

	#define _hypercall0(type, name) \
	({ \
	long __res; \
	asm volatile ( \
	"call %[call]" \
	: "=a" (__res) \
	: [call] "m" (hypercall_page[__HYPERVISOR_##name]) \
	: "memory" ); \
	(type)__res; \
	})

	#define _hypercall1(type, name, a1) \
	({ \
	long __res, __ign1; \
	asm volatile ( \
	"call %[call]" \
	: "=a" (__res), "=b" (__ign1) \
	: "1" ((long)(a1)), \
	[call] "m" (hypercall_page[__HYPERVISOR_##name]) \
	: "memory" ); \
	(type)__res; \
	})

	#define _hypercall2(type, name, a1, a2) \
	({ \
	long __res, __ign1, __ign2; \
	asm volatile ( \
	"call %[call]" \
	: "=a" (__res), "=b" (__ign1), "=c" (__ign2) \
	: "1" ((long)(a1)), "2" ((long)(a2)), \
	[call] "m" (hypercall_page[__HYPERVISOR_##name]) \
	: "memory" ); \
	(type)__res; \
	})

	#define _hypercall3(type, name, a1, a2, a3) \
	({ \
	long __res, __ign1, __ign2, __ign3; \
	asm volatile ( \
	"call %[call]" \
	: "=a" (__res), "=b" (__ign1), "=c" (__ign2), \
	"=d" (__ign3) \
	: "1" ((long)(a1)), "2" ((long)(a2)), \
	"3" ((long)(a3)), \
	[call] "m" (hypercall_page[__HYPERVISOR_##name]) \
	: "memory" ); \
	(type)__res; \
	})

	#define _hypercall4(type, name, a1, a2, a3, a4) \
	({ \
	long __res, __ign1, __ign2, __ign3, __ign4; \
	asm volatile ( \
	"call %[call]" \
	: "=a" (__res), "=b" (__ign1), "=c" (__ign2), \
	"=d" (__ign3), "=S" (__ign4) \
	: "1" ((long)(a1)), "2" ((long)(a2)), \
	"3" ((long)(a3)), "4" ((long)(a4)), \
	[call] "m" (hypercall_page[__HYPERVISOR_##name]) \
	: "memory" ); \
	(type)__res; \
	})

	#define _hypercall5(type, name, a1, a2, a3, a4, a5) \
	({ \
	long __res, __ign1, __ign2, __ign3, __ign4, __ign5; \
	asm volatile ( \
	"call %[call]" \
	: "=a" (__res), "=b" (__ign1), "=c" (__ign2), \
	"=d" (__ign3), "=S" (__ign4), "=D" (__ign5) \
	: "1" ((long)(a1)), "2" ((long)(a2)), \
	"3" ((long)(a3)), "4" ((long)(a4)), \
	"5" ((long)(a5)), \
	[call] "m" (hypercall_page[__HYPERVISOR_##name]) \
	: "memory" ); \
	(type)__res; \
	})

	static inline int
	HYPERVISOR_set_trap_table(struct trap_info *table)
	{
	return _hypercall1(int, set_trap_table, table);
	}

	static inline int
	HYPERVISOR_mmu_update(struct mmu_update *req, int count,
	int *success_count, domid_t domid)
	{
	return _hypercall4(int, mmu_update, req, count, success_count, domid);
	}

	static inline int
	HYPERVISOR_mmuext_op(struct mmuext_op *op, int count,
	int *success_count, domid_t domid)
	{
	return _hypercall4(int, mmuext_op, op, count, success_count, domid);
	}

	static inline int
	HYPERVISOR_set_gdt(unsigned long *frame_list, int entries)
	{
	return _hypercall2(int, set_gdt, frame_list, entries);
	}

	static inline int
	HYPERVISOR_stack_switch(unsigned long ss, unsigned long esp)
	{
	return _hypercall2(int, stack_switch, ss, esp);
	}

	static inline int
	HYPERVISOR_set_callbacks(unsigned long event_selector,
	unsigned long event_address,
	unsigned long failsafe_selector,
	unsigned long failsafe_address)
	{
	return _hypercall4(int, set_callbacks,
	event_selector, event_address,
	failsafe_selector, failsafe_address);
	}

	static inline int
	HYPERVISOR_callback_op(int cmd, void *arg)
	{
	return _hypercall2(int, callback_op, cmd, arg);
	}

	static inline int
	HYPERVISOR_fpu_taskswitch(int set)
	{
	return _hypercall1(int, fpu_taskswitch, set);
	}

	static inline int
	HYPERVISOR_sched_op(int cmd, void *arg)
	{
	return _hypercall2(int, sched_op_new, cmd, arg);
	}

	static inline long
	HYPERVISOR_set_timer_op(u64 timeout)
	{
	unsigned long timeout_hi = (unsigned long)(timeout>>32);
	unsigned long timeout_lo = (unsigned long)timeout;
	return _hypercall2(long, set_timer_op, timeout_lo, timeout_hi);
	}

	static inline int
	HYPERVISOR_set_debugreg(int reg, unsigned long value)
	{
	return _hypercall2(int, set_debugreg, reg, value);
	}

	static inline unsigned long
	HYPERVISOR_get_debugreg(int reg)
	{
	return _hypercall1(unsigned long, get_debugreg, reg);
	}

	static inline int
	HYPERVISOR_update_descriptor(u64 ma, u64 desc)
	{
	return _hypercall4(int, update_descriptor, ma, ma>>32, desc, desc>>32);
	}

	static inline int
	HYPERVISOR_memory_op(unsigned int cmd, void *arg)
	{
	return _hypercall2(int, memory_op, cmd, arg);
	}

	static inline int
	HYPERVISOR_multicall(void *call_list, int nr_calls)
	{
	return _hypercall2(int, multicall, call_list, nr_calls);
	}

	static inline int
	HYPERVISOR_update_va_mapping(unsigned long va, pte_t new_val,
	unsigned long flags)
	{
	unsigned long pte_hi = 0;
	#ifdef CONFIG_X86_PAE
	pte_hi = new_val.pte_high;
	#endif
	return _hypercall4(int, update_va_mapping, va,
	new_val.pte_low, pte_hi, flags);
	}

	static inline int
	HYPERVISOR_event_channel_op(int cmd, void *arg)
	{
	int rc = _hypercall2(int, event_channel_op, cmd, arg);
	if (unlikely(rc == -ENOSYS)) {
	struct evtchn_op op;
	op.cmd = cmd;
	memcpy(&op.u, arg, sizeof(op.u));
	rc = _hypercall1(int, event_channel_op_compat, &op);
	memcpy(arg, &op.u, sizeof(op.u));
	}
	return rc;
	}

	static inline int
	HYPERVISOR_xen_version(int cmd, void *arg)
	{
	return _hypercall2(int, xen_version, cmd, arg);
	}

	static inline int
	HYPERVISOR_console_io(int cmd, int count, char *str)
	{
	return _hypercall3(int, console_io, cmd, count, str);
	}

	static inline int
	HYPERVISOR_physdev_op(int cmd, void *arg)
	{
	int rc = _hypercall2(int, physdev_op, cmd, arg);
	if (unlikely(rc == -ENOSYS)) {
	struct physdev_op op;
	op.cmd = cmd;
	memcpy(&op.u, arg, sizeof(op.u));
	rc = _hypercall1(int, physdev_op_compat, &op);
	memcpy(arg, &op.u, sizeof(op.u));
	}
	return rc;
	}

	static inline int
	HYPERVISOR_grant_table_op(unsigned int cmd, void *uop, unsigned int count)
	{
	return _hypercall3(int, grant_table_op, cmd, uop, count);
	}

	static inline int
	HYPERVISOR_update_va_mapping_otherdomain(unsigned long va, pte_t new_val,
	unsigned long flags, domid_t domid)
	{
	unsigned long pte_hi = 0;
	#ifdef CONFIG_X86_PAE
	pte_hi = new_val.pte_high;
	#endif
	return _hypercall5(int, update_va_mapping_otherdomain, va,
	new_val.pte_low, pte_hi, flags, domid);
	}

	static inline int
	HYPERVISOR_vm_assist(unsigned int cmd, unsigned int type)
	{
	return _hypercall2(int, vm_assist, cmd, type);
	}

	static inline int
	HYPERVISOR_vcpu_op(int cmd, int vcpuid, void *extra_args)
	{
	return _hypercall3(int, vcpu_op, cmd, vcpuid, extra_args);
	}

	static inline int
	HYPERVISOR_suspend(unsigned long srec)
	{
	return _hypercall3(int, sched_op, SCHEDOP_shutdown,
	SHUTDOWN_suspend, srec);
	}

	static inline int
	HYPERVISOR_nmi_op(unsigned long op, unsigned long arg)
	{
	return _hypercall2(int, nmi_op, op, arg);
	}

	static inline void
	MULTI_fpu_taskswitch(struct multicall_entry *mcl, int set)
	{
	mcl->op = __HYPERVISOR_fpu_taskswitch;
	mcl->args[0] = set;
	}

	static inline void
	MULTI_update_va_mapping(struct multicall_entry *mcl, unsigned long va,
	pte_t new_val, unsigned long flags)
	{
	mcl->op = __HYPERVISOR_update_va_mapping;
	mcl->args[0] = va;
	#ifdef CONFIG_X86_PAE
	mcl->args[1] = new_val.pte_low;
	mcl->args[2] = new_val.pte_high;
	#else
	mcl->args[1] = new_val.pte_low;
	mcl->args[2] = 0;
	#endif
	mcl->args[3] = flags;
	}

	static inline void
	MULTI_grant_table_op(struct multicall_entry *mcl, unsigned int cmd,
	void *uop, unsigned int count)
	{
	mcl->op = __HYPERVISOR_grant_table_op;
	mcl->args[0] = cmd;
	mcl->args[1] = (unsigned long)uop;
	mcl->args[2] = count;
	}

	static inline void
	MULTI_update_va_mapping_otherdomain(struct multicall_entry *mcl, unsigned long va,
	pte_t new_val, unsigned long flags,
	domid_t domid)
	{
	mcl->op = __HYPERVISOR_update_va_mapping_otherdomain;
	mcl->args[0] = va;
	#ifdef CONFIG_X86_PAE
	mcl->args[1] = new_val.pte_low;
	mcl->args[2] = new_val.pte_high;
	#else
	mcl->args[1] = new_val.pte_low;
	mcl->args[2] = 0;
	#endif
	mcl->args[3] = flags;
	mcl->args[4] = domid;
	}

	static inline void
	MULTI_update_descriptor(struct multicall_entry *mcl, u64 maddr,
	struct desc_struct desc)
	{
	mcl->op = __HYPERVISOR_update_descriptor;
	mcl->args[0] = maddr;
	mcl->args[1] = maddr >> 32;
	mcl->args[2] = desc.a;
	mcl->args[3] = desc.b;
	}

	static inline void
	MULTI_memory_op(struct multicall_entry mcl, unsigned int cmd, void arg)
	{
	mcl->op = __HYPERVISOR_memory_op;
	mcl->args[0] = cmd;
	mcl->args[1] = (unsigned long)arg;
	}

	static inline void
	MULTI_mmu_update(struct multicall_entry mcl, struct mmu_update req,
	int count, int *success_count, domid_t domid)
	{
	mcl->op = __HYPERVISOR_mmu_update;
	mcl->args[0] = (unsigned long)req;
	mcl->args[1] = count;
	mcl->args[2] = (unsigned long)success_count;
	mcl->args[3] = domid;
	}

	static inline void
	MULTI_mmuext_op(struct multicall_entry mcl, struct mmuext_op op, int count,
	int *success_count, domid_t domid)
	{
	mcl->op = __HYPERVISOR_mmuext_op;
	mcl->args[0] = (unsigned long)op;
	mcl->args[1] = count;
	mcl->args[2] = (unsigned long)success_count;
	mcl->args[3] = domid;
	}

	static inline void
	MULTI_set_gdt(struct multicall_entry mcl, unsigned long frames, int entries)
	{
	mcl->op = __HYPERVISOR_set_gdt;
	mcl->args[0] = (unsigned long)frames;
	mcl->args[1] = entries;
	}

	static inline void
	MULTI_stack_switch(struct multicall_entry *mcl,
	unsigned long ss, unsigned long esp)
	{
	mcl->op = __HYPERVISOR_stack_switch;
	mcl->args[0] = ss;
	mcl->args[1] = esp;
	}

	#endif /* __HYPERCALL_H__ */