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diff --git a/include/asm-x86/xen/hypercall.h b/include/asm-x86/xen/hypercall.h
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-/******************************************************************************
- * 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 ASM_X86__XEN__HYPERCALL_H
-#define ASM_X86__XEN__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>
-
-/*
- * The hypercall asms have to meet several constraints:
- * - Work on 32- and 64-bit.
- * The two architectures put their arguments in different sets of
- * registers.
- *
- * - Work around asm syntax quirks
- * It isn't possible to specify one of the rNN registers in a
- * constraint, so we use explicit register variables to get the
- * args into the right place.
- *
- * - Mark all registers as potentially clobbered
- * Even unused parameters can be clobbered by the hypervisor, so we
- * need to make sure gcc knows it.
- *
- * - Avoid compiler bugs.
- * This is the tricky part. Because x86_32 has such a constrained
- * register set, gcc versions below 4.3 have trouble generating
- * code when all the arg registers and memory are trashed by the
- * asm. There are syntactically simpler ways of achieving the
- * semantics below, but they cause the compiler to crash.
- *
- * The only combination I found which works is:
- * - assign the __argX variables first
- * - list all actually used parameters as "+r" (__argX)
- * - clobber the rest
- *
- * The result certainly isn't pretty, and it really shows up cpp's
- * weakness as as macro language. Sorry. (But let's just give thanks
- * there aren't more than 5 arguments...)
- */
-
-extern struct { char _entry[32]; } hypercall_page[];
-
-#define __HYPERCALL "call hypercall_page+%c[offset]"
-#define __HYPERCALL_ENTRY(x) \
- [offset] "i" (__HYPERVISOR_##x * sizeof(hypercall_page[0]))
-
-#ifdef CONFIG_X86_32
-#define __HYPERCALL_RETREG "eax"
-#define __HYPERCALL_ARG1REG "ebx"
-#define __HYPERCALL_ARG2REG "ecx"
-#define __HYPERCALL_ARG3REG "edx"
-#define __HYPERCALL_ARG4REG "esi"
-#define __HYPERCALL_ARG5REG "edi"
-#else
-#define __HYPERCALL_RETREG "rax"
-#define __HYPERCALL_ARG1REG "rdi"
-#define __HYPERCALL_ARG2REG "rsi"
-#define __HYPERCALL_ARG3REG "rdx"
-#define __HYPERCALL_ARG4REG "r10"
-#define __HYPERCALL_ARG5REG "r8"
-#endif
-
-#define __HYPERCALL_DECLS \
- register unsigned long __res asm(__HYPERCALL_RETREG); \
- register unsigned long __arg1 asm(__HYPERCALL_ARG1REG) = __arg1; \
- register unsigned long __arg2 asm(__HYPERCALL_ARG2REG) = __arg2; \
- register unsigned long __arg3 asm(__HYPERCALL_ARG3REG) = __arg3; \
- register unsigned long __arg4 asm(__HYPERCALL_ARG4REG) = __arg4; \
- register unsigned long __arg5 asm(__HYPERCALL_ARG5REG) = __arg5;
-
-#define __HYPERCALL_0PARAM "=r" (__res)
-#define __HYPERCALL_1PARAM __HYPERCALL_0PARAM, "+r" (__arg1)
-#define __HYPERCALL_2PARAM __HYPERCALL_1PARAM, "+r" (__arg2)
-#define __HYPERCALL_3PARAM __HYPERCALL_2PARAM, "+r" (__arg3)
-#define __HYPERCALL_4PARAM __HYPERCALL_3PARAM, "+r" (__arg4)
-#define __HYPERCALL_5PARAM __HYPERCALL_4PARAM, "+r" (__arg5)
-
-#define __HYPERCALL_0ARG()
-#define __HYPERCALL_1ARG(a1) \
- __HYPERCALL_0ARG() __arg1 = (unsigned long)(a1);
-#define __HYPERCALL_2ARG(a1,a2) \
- __HYPERCALL_1ARG(a1) __arg2 = (unsigned long)(a2);
-#define __HYPERCALL_3ARG(a1,a2,a3) \
- __HYPERCALL_2ARG(a1,a2) __arg3 = (unsigned long)(a3);
-#define __HYPERCALL_4ARG(a1,a2,a3,a4) \
- __HYPERCALL_3ARG(a1,a2,a3) __arg4 = (unsigned long)(a4);
-#define __HYPERCALL_5ARG(a1,a2,a3,a4,a5) \
- __HYPERCALL_4ARG(a1,a2,a3,a4) __arg5 = (unsigned long)(a5);
-
-#define __HYPERCALL_CLOBBER5 "memory"
-#define __HYPERCALL_CLOBBER4 __HYPERCALL_CLOBBER5, __HYPERCALL_ARG5REG
-#define __HYPERCALL_CLOBBER3 __HYPERCALL_CLOBBER4, __HYPERCALL_ARG4REG
-#define __HYPERCALL_CLOBBER2 __HYPERCALL_CLOBBER3, __HYPERCALL_ARG3REG
-#define __HYPERCALL_CLOBBER1 __HYPERCALL_CLOBBER2, __HYPERCALL_ARG2REG
-#define __HYPERCALL_CLOBBER0 __HYPERCALL_CLOBBER1, __HYPERCALL_ARG1REG
-
-#define _hypercall0(type, name) \
-({ \
- __HYPERCALL_DECLS; \
- __HYPERCALL_0ARG(); \
- asm volatile (__HYPERCALL \
- : __HYPERCALL_0PARAM \
- : __HYPERCALL_ENTRY(name) \
- : __HYPERCALL_CLOBBER0); \
- (type)__res; \
-})
-
-#define _hypercall1(type, name, a1) \
-({ \
- __HYPERCALL_DECLS; \
- __HYPERCALL_1ARG(a1); \
- asm volatile (__HYPERCALL \
- : __HYPERCALL_1PARAM \
- : __HYPERCALL_ENTRY(name) \
- : __HYPERCALL_CLOBBER1); \
- (type)__res; \
-})
-
-#define _hypercall2(type, name, a1, a2) \
-({ \
- __HYPERCALL_DECLS; \
- __HYPERCALL_2ARG(a1, a2); \
- asm volatile (__HYPERCALL \
- : __HYPERCALL_2PARAM \
- : __HYPERCALL_ENTRY(name) \
- : __HYPERCALL_CLOBBER2); \
- (type)__res; \
-})
-
-#define _hypercall3(type, name, a1, a2, a3) \
-({ \
- __HYPERCALL_DECLS; \
- __HYPERCALL_3ARG(a1, a2, a3); \
- asm volatile (__HYPERCALL \
- : __HYPERCALL_3PARAM \
- : __HYPERCALL_ENTRY(name) \
- : __HYPERCALL_CLOBBER3); \
- (type)__res; \
-})
-
-#define _hypercall4(type, name, a1, a2, a3, a4) \
-({ \
- __HYPERCALL_DECLS; \
- __HYPERCALL_4ARG(a1, a2, a3, a4); \
- asm volatile (__HYPERCALL \
- : __HYPERCALL_4PARAM \
- : __HYPERCALL_ENTRY(name) \
- : __HYPERCALL_CLOBBER4); \
- (type)__res; \
-})
-
-#define _hypercall5(type, name, a1, a2, a3, a4, a5) \
-({ \
- __HYPERCALL_DECLS; \
- __HYPERCALL_5ARG(a1, a2, a3, a4, a5); \
- asm volatile (__HYPERCALL \
- : __HYPERCALL_5PARAM \
- : __HYPERCALL_ENTRY(name) \
- : __HYPERCALL_CLOBBER5); \
- (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);
-}
-
-#ifdef CONFIG_X86_32
-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);
-}
-#else /* CONFIG_X86_64 */
-static inline int
-HYPERVISOR_set_callbacks(unsigned long event_address,
- unsigned long failsafe_address,
- unsigned long syscall_address)
-{
- return _hypercall3(int, set_callbacks,
- event_address, failsafe_address,
- syscall_address);
-}
-#endif /* CONFIG_X86_{32,64} */
-
-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)
-{
- if (sizeof(new_val) == sizeof(long))
- return _hypercall3(int, update_va_mapping, va,
- new_val.pte, flags);
- else
- return _hypercall4(int, update_va_mapping, va,
- new_val.pte, new_val.pte >> 32, 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)
-{
- if (sizeof(new_val) == sizeof(long))
- return _hypercall4(int, update_va_mapping_otherdomain, va,
- new_val.pte, flags, domid);
- else
- return _hypercall5(int, update_va_mapping_otherdomain, va,
- new_val.pte, new_val.pte >> 32,
- 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);
-}
-
-#ifdef CONFIG_X86_64
-static inline int
-HYPERVISOR_set_segment_base(int reg, unsigned long value)
-{
- return _hypercall2(int, set_segment_base, reg, value);
-}
-#endif
-
-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;
- if (sizeof(new_val) == sizeof(long)) {
- mcl->args[1] = new_val.pte;
- mcl->args[2] = flags;
- } else {
- mcl->args[1] = new_val.pte;
- mcl->args[2] = new_val.pte >> 32;
- 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;
- if (sizeof(new_val) == sizeof(long)) {
- mcl->args[1] = new_val.pte;
- mcl->args[2] = flags;
- mcl->args[3] = domid;
- } else {
- mcl->args[1] = new_val.pte;
- mcl->args[2] = new_val.pte >> 32;
- 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;
- if (sizeof(maddr) == sizeof(long)) {
- mcl->args[0] = maddr;
- mcl->args[1] = *(unsigned long *)&desc;
- } else {
- 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 /* ASM_X86__XEN__HYPERCALL_H */