blob: 5728852fb90f932cebef5078727a386cdd63224c [file] [log] [blame]
Jeremy Fitzhardingea42089d2007-07-17 18:37:04 -07001/******************************************************************************
2 * hypercall.h
3 *
4 * Linux-specific hypervisor handling.
5 *
6 * Copyright (c) 2002-2004, K A Fraser
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License version 2
10 * as published by the Free Software Foundation; or, when distributed
11 * separately from the Linux kernel or incorporated into other
12 * software packages, subject to the following license:
13 *
14 * Permission is hereby granted, free of charge, to any person obtaining a copy
15 * of this source file (the "Software"), to deal in the Software without
16 * restriction, including without limitation the rights to use, copy, modify,
17 * merge, publish, distribute, sublicense, and/or sell copies of the Software,
18 * and to permit persons to whom the Software is furnished to do so, subject to
19 * the following conditions:
20 *
21 * The above copyright notice and this permission notice shall be included in
22 * all copies or substantial portions of the Software.
23 *
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
25 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
26 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
27 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
28 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
29 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
30 * IN THE SOFTWARE.
31 */
32
H. Peter Anvin05e4d312008-10-23 00:01:39 -070033#ifndef _ASM_X86_XEN_HYPERCALL_H
34#define _ASM_X86_XEN_HYPERCALL_H
Jeremy Fitzhardingea42089d2007-07-17 18:37:04 -070035
Jeremy Fitzhardingeecbf29c2008-12-16 12:37:07 -080036#include <linux/kernel.h>
37#include <linux/spinlock.h>
Jeremy Fitzhardingea42089d2007-07-17 18:37:04 -070038#include <linux/errno.h>
39#include <linux/string.h>
Jeremy Fitzhardingeecbf29c2008-12-16 12:37:07 -080040#include <linux/types.h>
41
Jeremy Fitzhardingec796f212010-12-16 14:33:27 -080042#include <trace/events/xen.h>
43
Jeremy Fitzhardingeecbf29c2008-12-16 12:37:07 -080044#include <asm/page.h>
45#include <asm/pgtable.h>
Jeremy Fitzhardingea42089d2007-07-17 18:37:04 -070046
47#include <xen/interface/xen.h>
48#include <xen/interface/sched.h>
49#include <xen/interface/physdev.h>
Jeremy Fitzhardingeeec07a92011-09-23 11:44:17 -070050#include <xen/interface/platform.h>
Jeremy Fitzhardingea42089d2007-07-17 18:37:04 -070051
Jeremy Fitzhardingee7435902008-07-08 15:06:37 -070052/*
53 * The hypercall asms have to meet several constraints:
54 * - Work on 32- and 64-bit.
55 * The two architectures put their arguments in different sets of
56 * registers.
57 *
58 * - Work around asm syntax quirks
59 * It isn't possible to specify one of the rNN registers in a
60 * constraint, so we use explicit register variables to get the
61 * args into the right place.
62 *
63 * - Mark all registers as potentially clobbered
64 * Even unused parameters can be clobbered by the hypervisor, so we
65 * need to make sure gcc knows it.
66 *
67 * - Avoid compiler bugs.
68 * This is the tricky part. Because x86_32 has such a constrained
69 * register set, gcc versions below 4.3 have trouble generating
70 * code when all the arg registers and memory are trashed by the
71 * asm. There are syntactically simpler ways of achieving the
72 * semantics below, but they cause the compiler to crash.
73 *
74 * The only combination I found which works is:
75 * - assign the __argX variables first
76 * - list all actually used parameters as "+r" (__argX)
77 * - clobber the rest
78 *
79 * The result certainly isn't pretty, and it really shows up cpp's
80 * weakness as as macro language. Sorry. (But let's just give thanks
81 * there aren't more than 5 arguments...)
82 */
83
Jeremy Fitzhardingea42089d2007-07-17 18:37:04 -070084extern struct { char _entry[32]; } hypercall_page[];
85
Jeremy Fitzhardingee7435902008-07-08 15:06:37 -070086#define __HYPERCALL "call hypercall_page+%c[offset]"
87#define __HYPERCALL_ENTRY(x) \
88 [offset] "i" (__HYPERVISOR_##x * sizeof(hypercall_page[0]))
89
90#ifdef CONFIG_X86_32
91#define __HYPERCALL_RETREG "eax"
92#define __HYPERCALL_ARG1REG "ebx"
93#define __HYPERCALL_ARG2REG "ecx"
94#define __HYPERCALL_ARG3REG "edx"
95#define __HYPERCALL_ARG4REG "esi"
96#define __HYPERCALL_ARG5REG "edi"
97#else
98#define __HYPERCALL_RETREG "rax"
99#define __HYPERCALL_ARG1REG "rdi"
100#define __HYPERCALL_ARG2REG "rsi"
101#define __HYPERCALL_ARG3REG "rdx"
102#define __HYPERCALL_ARG4REG "r10"
103#define __HYPERCALL_ARG5REG "r8"
104#endif
105
106#define __HYPERCALL_DECLS \
107 register unsigned long __res asm(__HYPERCALL_RETREG); \
108 register unsigned long __arg1 asm(__HYPERCALL_ARG1REG) = __arg1; \
109 register unsigned long __arg2 asm(__HYPERCALL_ARG2REG) = __arg2; \
110 register unsigned long __arg3 asm(__HYPERCALL_ARG3REG) = __arg3; \
111 register unsigned long __arg4 asm(__HYPERCALL_ARG4REG) = __arg4; \
112 register unsigned long __arg5 asm(__HYPERCALL_ARG5REG) = __arg5;
113
114#define __HYPERCALL_0PARAM "=r" (__res)
115#define __HYPERCALL_1PARAM __HYPERCALL_0PARAM, "+r" (__arg1)
116#define __HYPERCALL_2PARAM __HYPERCALL_1PARAM, "+r" (__arg2)
117#define __HYPERCALL_3PARAM __HYPERCALL_2PARAM, "+r" (__arg3)
118#define __HYPERCALL_4PARAM __HYPERCALL_3PARAM, "+r" (__arg4)
119#define __HYPERCALL_5PARAM __HYPERCALL_4PARAM, "+r" (__arg5)
120
121#define __HYPERCALL_0ARG()
122#define __HYPERCALL_1ARG(a1) \
123 __HYPERCALL_0ARG() __arg1 = (unsigned long)(a1);
124#define __HYPERCALL_2ARG(a1,a2) \
125 __HYPERCALL_1ARG(a1) __arg2 = (unsigned long)(a2);
126#define __HYPERCALL_3ARG(a1,a2,a3) \
127 __HYPERCALL_2ARG(a1,a2) __arg3 = (unsigned long)(a3);
128#define __HYPERCALL_4ARG(a1,a2,a3,a4) \
129 __HYPERCALL_3ARG(a1,a2,a3) __arg4 = (unsigned long)(a4);
130#define __HYPERCALL_5ARG(a1,a2,a3,a4,a5) \
131 __HYPERCALL_4ARG(a1,a2,a3,a4) __arg5 = (unsigned long)(a5);
132
133#define __HYPERCALL_CLOBBER5 "memory"
134#define __HYPERCALL_CLOBBER4 __HYPERCALL_CLOBBER5, __HYPERCALL_ARG5REG
135#define __HYPERCALL_CLOBBER3 __HYPERCALL_CLOBBER4, __HYPERCALL_ARG4REG
136#define __HYPERCALL_CLOBBER2 __HYPERCALL_CLOBBER3, __HYPERCALL_ARG3REG
137#define __HYPERCALL_CLOBBER1 __HYPERCALL_CLOBBER2, __HYPERCALL_ARG2REG
138#define __HYPERCALL_CLOBBER0 __HYPERCALL_CLOBBER1, __HYPERCALL_ARG1REG
139
Jeremy Fitzhardingea42089d2007-07-17 18:37:04 -0700140#define _hypercall0(type, name) \
141({ \
Jeremy Fitzhardingee7435902008-07-08 15:06:37 -0700142 __HYPERCALL_DECLS; \
143 __HYPERCALL_0ARG(); \
144 asm volatile (__HYPERCALL \
145 : __HYPERCALL_0PARAM \
146 : __HYPERCALL_ENTRY(name) \
147 : __HYPERCALL_CLOBBER0); \
Jeremy Fitzhardingea42089d2007-07-17 18:37:04 -0700148 (type)__res; \
149})
150
151#define _hypercall1(type, name, a1) \
152({ \
Jeremy Fitzhardingee7435902008-07-08 15:06:37 -0700153 __HYPERCALL_DECLS; \
154 __HYPERCALL_1ARG(a1); \
155 asm volatile (__HYPERCALL \
156 : __HYPERCALL_1PARAM \
157 : __HYPERCALL_ENTRY(name) \
158 : __HYPERCALL_CLOBBER1); \
Jeremy Fitzhardingea42089d2007-07-17 18:37:04 -0700159 (type)__res; \
160})
161
162#define _hypercall2(type, name, a1, a2) \
163({ \
Jeremy Fitzhardingee7435902008-07-08 15:06:37 -0700164 __HYPERCALL_DECLS; \
165 __HYPERCALL_2ARG(a1, a2); \
166 asm volatile (__HYPERCALL \
167 : __HYPERCALL_2PARAM \
168 : __HYPERCALL_ENTRY(name) \
169 : __HYPERCALL_CLOBBER2); \
Jeremy Fitzhardingea42089d2007-07-17 18:37:04 -0700170 (type)__res; \
171})
172
173#define _hypercall3(type, name, a1, a2, a3) \
174({ \
Jeremy Fitzhardingee7435902008-07-08 15:06:37 -0700175 __HYPERCALL_DECLS; \
176 __HYPERCALL_3ARG(a1, a2, a3); \
177 asm volatile (__HYPERCALL \
178 : __HYPERCALL_3PARAM \
179 : __HYPERCALL_ENTRY(name) \
180 : __HYPERCALL_CLOBBER3); \
Jeremy Fitzhardingea42089d2007-07-17 18:37:04 -0700181 (type)__res; \
182})
183
184#define _hypercall4(type, name, a1, a2, a3, a4) \
185({ \
Jeremy Fitzhardingee7435902008-07-08 15:06:37 -0700186 __HYPERCALL_DECLS; \
187 __HYPERCALL_4ARG(a1, a2, a3, a4); \
188 asm volatile (__HYPERCALL \
189 : __HYPERCALL_4PARAM \
190 : __HYPERCALL_ENTRY(name) \
191 : __HYPERCALL_CLOBBER4); \
Jeremy Fitzhardingea42089d2007-07-17 18:37:04 -0700192 (type)__res; \
193})
194
195#define _hypercall5(type, name, a1, a2, a3, a4, a5) \
196({ \
Jeremy Fitzhardingee7435902008-07-08 15:06:37 -0700197 __HYPERCALL_DECLS; \
198 __HYPERCALL_5ARG(a1, a2, a3, a4, a5); \
199 asm volatile (__HYPERCALL \
200 : __HYPERCALL_5PARAM \
201 : __HYPERCALL_ENTRY(name) \
202 : __HYPERCALL_CLOBBER5); \
Jeremy Fitzhardingea42089d2007-07-17 18:37:04 -0700203 (type)__res; \
204})
205
Jeremy Fitzhardinge1246ae02009-02-09 12:05:49 -0800206static inline long
207privcmd_call(unsigned call,
208 unsigned long a1, unsigned long a2,
209 unsigned long a3, unsigned long a4,
210 unsigned long a5)
211{
212 __HYPERCALL_DECLS;
213 __HYPERCALL_5ARG(a1, a2, a3, a4, a5);
214
215 asm volatile("call *%[call]"
216 : __HYPERCALL_5PARAM
217 : [call] "a" (&hypercall_page[call])
218 : __HYPERCALL_CLOBBER5);
219
220 return (long)__res;
221}
222
Jeremy Fitzhardingea42089d2007-07-17 18:37:04 -0700223static inline int
224HYPERVISOR_set_trap_table(struct trap_info *table)
225{
226 return _hypercall1(int, set_trap_table, table);
227}
228
229static inline int
230HYPERVISOR_mmu_update(struct mmu_update *req, int count,
231 int *success_count, domid_t domid)
232{
233 return _hypercall4(int, mmu_update, req, count, success_count, domid);
234}
235
236static inline int
237HYPERVISOR_mmuext_op(struct mmuext_op *op, int count,
238 int *success_count, domid_t domid)
239{
240 return _hypercall4(int, mmuext_op, op, count, success_count, domid);
241}
242
243static inline int
244HYPERVISOR_set_gdt(unsigned long *frame_list, int entries)
245{
246 return _hypercall2(int, set_gdt, frame_list, entries);
247}
248
249static inline int
250HYPERVISOR_stack_switch(unsigned long ss, unsigned long esp)
251{
252 return _hypercall2(int, stack_switch, ss, esp);
253}
254
Jeremy Fitzhardinge88459d42008-07-08 15:07:02 -0700255#ifdef CONFIG_X86_32
Jeremy Fitzhardingea42089d2007-07-17 18:37:04 -0700256static inline int
257HYPERVISOR_set_callbacks(unsigned long event_selector,
258 unsigned long event_address,
259 unsigned long failsafe_selector,
260 unsigned long failsafe_address)
261{
262 return _hypercall4(int, set_callbacks,
263 event_selector, event_address,
264 failsafe_selector, failsafe_address);
265}
Jeremy Fitzhardinge88459d42008-07-08 15:07:02 -0700266#else /* CONFIG_X86_64 */
267static inline int
268HYPERVISOR_set_callbacks(unsigned long event_address,
269 unsigned long failsafe_address,
270 unsigned long syscall_address)
271{
272 return _hypercall3(int, set_callbacks,
273 event_address, failsafe_address,
274 syscall_address);
275}
276#endif /* CONFIG_X86_{32,64} */
Jeremy Fitzhardingea42089d2007-07-17 18:37:04 -0700277
278static inline int
Jeremy Fitzhardingeaa380c82008-03-17 16:37:15 -0700279HYPERVISOR_callback_op(int cmd, void *arg)
280{
281 return _hypercall2(int, callback_op, cmd, arg);
282}
283
284static inline int
Jeremy Fitzhardingea42089d2007-07-17 18:37:04 -0700285HYPERVISOR_fpu_taskswitch(int set)
286{
287 return _hypercall1(int, fpu_taskswitch, set);
288}
289
290static inline int
Jeremy Fitzhardinge349c7092008-05-26 23:31:02 +0100291HYPERVISOR_sched_op(int cmd, void *arg)
Jeremy Fitzhardingea42089d2007-07-17 18:37:04 -0700292{
Ian Campbella8b74582011-02-17 11:04:20 +0000293 return _hypercall2(int, sched_op, cmd, arg);
Jeremy Fitzhardingea42089d2007-07-17 18:37:04 -0700294}
295
296static inline long
297HYPERVISOR_set_timer_op(u64 timeout)
298{
299 unsigned long timeout_hi = (unsigned long)(timeout>>32);
300 unsigned long timeout_lo = (unsigned long)timeout;
301 return _hypercall2(long, set_timer_op, timeout_lo, timeout_hi);
302}
303
304static inline int
Jeremy Fitzhardingeeec07a92011-09-23 11:44:17 -0700305HYPERVISOR_dom0_op(struct xen_platform_op *platform_op)
306{
307 platform_op->interface_version = XENPF_INTERFACE_VERSION;
308 return _hypercall1(int, dom0_op, platform_op);
309}
310
311static inline int
Jeremy Fitzhardingea42089d2007-07-17 18:37:04 -0700312HYPERVISOR_set_debugreg(int reg, unsigned long value)
313{
314 return _hypercall2(int, set_debugreg, reg, value);
315}
316
317static inline unsigned long
318HYPERVISOR_get_debugreg(int reg)
319{
320 return _hypercall1(unsigned long, get_debugreg, reg);
321}
322
323static inline int
324HYPERVISOR_update_descriptor(u64 ma, u64 desc)
325{
Jan Beulich6a5c05f2009-03-12 11:54:54 +0000326 if (sizeof(u64) == sizeof(long))
327 return _hypercall2(int, update_descriptor, ma, desc);
Jeremy Fitzhardingea42089d2007-07-17 18:37:04 -0700328 return _hypercall4(int, update_descriptor, ma, ma>>32, desc, desc>>32);
329}
330
331static inline int
332HYPERVISOR_memory_op(unsigned int cmd, void *arg)
333{
334 return _hypercall2(int, memory_op, cmd, arg);
335}
336
337static inline int
338HYPERVISOR_multicall(void *call_list, int nr_calls)
339{
340 return _hypercall2(int, multicall, call_list, nr_calls);
341}
342
343static inline int
344HYPERVISOR_update_va_mapping(unsigned long va, pte_t new_val,
345 unsigned long flags)
346{
Jeremy Fitzhardingeca15f202008-07-08 15:06:36 -0700347 if (sizeof(new_val) == sizeof(long))
348 return _hypercall3(int, update_va_mapping, va,
349 new_val.pte, flags);
350 else
351 return _hypercall4(int, update_va_mapping, va,
352 new_val.pte, new_val.pte >> 32, flags);
Jeremy Fitzhardingea42089d2007-07-17 18:37:04 -0700353}
354
355static inline int
356HYPERVISOR_event_channel_op(int cmd, void *arg)
357{
358 int rc = _hypercall2(int, event_channel_op, cmd, arg);
359 if (unlikely(rc == -ENOSYS)) {
360 struct evtchn_op op;
361 op.cmd = cmd;
362 memcpy(&op.u, arg, sizeof(op.u));
363 rc = _hypercall1(int, event_channel_op_compat, &op);
364 memcpy(arg, &op.u, sizeof(op.u));
365 }
366 return rc;
367}
368
369static inline int
370HYPERVISOR_xen_version(int cmd, void *arg)
371{
372 return _hypercall2(int, xen_version, cmd, arg);
373}
374
375static inline int
376HYPERVISOR_console_io(int cmd, int count, char *str)
377{
378 return _hypercall3(int, console_io, cmd, count, str);
379}
380
381static inline int
382HYPERVISOR_physdev_op(int cmd, void *arg)
383{
384 int rc = _hypercall2(int, physdev_op, cmd, arg);
385 if (unlikely(rc == -ENOSYS)) {
386 struct physdev_op op;
387 op.cmd = cmd;
388 memcpy(&op.u, arg, sizeof(op.u));
389 rc = _hypercall1(int, physdev_op_compat, &op);
390 memcpy(arg, &op.u, sizeof(op.u));
391 }
392 return rc;
393}
394
395static inline int
396HYPERVISOR_grant_table_op(unsigned int cmd, void *uop, unsigned int count)
397{
398 return _hypercall3(int, grant_table_op, cmd, uop, count);
399}
400
401static inline int
402HYPERVISOR_update_va_mapping_otherdomain(unsigned long va, pte_t new_val,
403 unsigned long flags, domid_t domid)
404{
Jeremy Fitzhardingeca15f202008-07-08 15:06:36 -0700405 if (sizeof(new_val) == sizeof(long))
406 return _hypercall4(int, update_va_mapping_otherdomain, va,
407 new_val.pte, flags, domid);
408 else
409 return _hypercall5(int, update_va_mapping_otherdomain, va,
410 new_val.pte, new_val.pte >> 32,
411 flags, domid);
Jeremy Fitzhardingea42089d2007-07-17 18:37:04 -0700412}
413
414static inline int
415HYPERVISOR_vm_assist(unsigned int cmd, unsigned int type)
416{
417 return _hypercall2(int, vm_assist, cmd, type);
418}
419
420static inline int
421HYPERVISOR_vcpu_op(int cmd, int vcpuid, void *extra_args)
422{
423 return _hypercall3(int, vcpu_op, cmd, vcpuid, extra_args);
424}
425
Eduardo Habkost45eb0d82008-07-08 15:07:04 -0700426#ifdef CONFIG_X86_64
427static inline int
428HYPERVISOR_set_segment_base(int reg, unsigned long value)
429{
430 return _hypercall2(int, set_segment_base, reg, value);
431}
432#endif
433
Jeremy Fitzhardingea42089d2007-07-17 18:37:04 -0700434static inline int
Ian Campbell8e155972011-02-17 11:04:20 +0000435HYPERVISOR_suspend(unsigned long start_info_mfn)
Jeremy Fitzhardingea42089d2007-07-17 18:37:04 -0700436{
Ian Campbell8e155972011-02-17 11:04:20 +0000437 struct sched_shutdown r = { .reason = SHUTDOWN_suspend };
438
439 /*
440 * For a PV guest the tools require that the start_info mfn be
441 * present in rdx/edx when the hypercall is made. Per the
442 * hypercall calling convention this is the third hypercall
443 * argument, which is start_info_mfn here.
444 */
Ian Campbella8b74582011-02-17 11:04:20 +0000445 return _hypercall3(int, sched_op, SCHEDOP_shutdown, &r, start_info_mfn);
Jeremy Fitzhardingea42089d2007-07-17 18:37:04 -0700446}
447
448static inline int
449HYPERVISOR_nmi_op(unsigned long op, unsigned long arg)
450{
451 return _hypercall2(int, nmi_op, op, arg);
452}
453
Jeremy Fitzhardinge18f19aa2010-05-14 12:38:24 +0100454static inline unsigned long __must_check
455HYPERVISOR_hvm_op(int op, void *arg)
456{
457 return _hypercall2(unsigned long, hvm_op, op, arg);
458}
459
Dan Magenheimer5bc20fc2011-05-26 10:02:21 -0600460static inline int
461HYPERVISOR_tmem_op(
462 struct tmem_op *op)
463{
464 return _hypercall1(int, tmem_op, op);
465}
466
Jeremy Fitzhardingea42089d2007-07-17 18:37:04 -0700467static inline void
Jeremy Fitzhardinge7b1333a2008-05-26 23:31:01 +0100468MULTI_fpu_taskswitch(struct multicall_entry *mcl, int set)
469{
470 mcl->op = __HYPERVISOR_fpu_taskswitch;
471 mcl->args[0] = set;
Jeremy Fitzhardingec796f212010-12-16 14:33:27 -0800472
473 trace_xen_mc_entry(mcl, 1);
Jeremy Fitzhardinge7b1333a2008-05-26 23:31:01 +0100474}
475
476static inline void
Jeremy Fitzhardingea42089d2007-07-17 18:37:04 -0700477MULTI_update_va_mapping(struct multicall_entry *mcl, unsigned long va,
478 pte_t new_val, unsigned long flags)
479{
480 mcl->op = __HYPERVISOR_update_va_mapping;
481 mcl->args[0] = va;
Jeremy Fitzhardingeca15f202008-07-08 15:06:36 -0700482 if (sizeof(new_val) == sizeof(long)) {
483 mcl->args[1] = new_val.pte;
484 mcl->args[2] = flags;
485 } else {
486 mcl->args[1] = new_val.pte;
487 mcl->args[2] = new_val.pte >> 32;
488 mcl->args[3] = flags;
489 }
Jeremy Fitzhardingec796f212010-12-16 14:33:27 -0800490
491 trace_xen_mc_entry(mcl, sizeof(new_val) == sizeof(long) ? 3 : 4);
Jeremy Fitzhardingea42089d2007-07-17 18:37:04 -0700492}
493
494static inline void
495MULTI_grant_table_op(struct multicall_entry *mcl, unsigned int cmd,
496 void *uop, unsigned int count)
497{
498 mcl->op = __HYPERVISOR_grant_table_op;
499 mcl->args[0] = cmd;
500 mcl->args[1] = (unsigned long)uop;
501 mcl->args[2] = count;
Jeremy Fitzhardingec796f212010-12-16 14:33:27 -0800502
503 trace_xen_mc_entry(mcl, 3);
Jeremy Fitzhardingea42089d2007-07-17 18:37:04 -0700504}
505
506static inline void
507MULTI_update_va_mapping_otherdomain(struct multicall_entry *mcl, unsigned long va,
508 pte_t new_val, unsigned long flags,
509 domid_t domid)
510{
511 mcl->op = __HYPERVISOR_update_va_mapping_otherdomain;
512 mcl->args[0] = va;
Jeremy Fitzhardingeca15f202008-07-08 15:06:36 -0700513 if (sizeof(new_val) == sizeof(long)) {
514 mcl->args[1] = new_val.pte;
515 mcl->args[2] = flags;
516 mcl->args[3] = domid;
517 } else {
518 mcl->args[1] = new_val.pte;
519 mcl->args[2] = new_val.pte >> 32;
520 mcl->args[3] = flags;
521 mcl->args[4] = domid;
522 }
Jeremy Fitzhardingec796f212010-12-16 14:33:27 -0800523
524 trace_xen_mc_entry(mcl, sizeof(new_val) == sizeof(long) ? 4 : 5);
Jeremy Fitzhardingea42089d2007-07-17 18:37:04 -0700525}
526
527static inline void
528MULTI_update_descriptor(struct multicall_entry *mcl, u64 maddr,
529 struct desc_struct desc)
530{
531 mcl->op = __HYPERVISOR_update_descriptor;
Jeremy Fitzhardingec05f1cf2008-07-08 15:07:11 -0700532 if (sizeof(maddr) == sizeof(long)) {
533 mcl->args[0] = maddr;
534 mcl->args[1] = *(unsigned long *)&desc;
535 } else {
536 mcl->args[0] = maddr;
537 mcl->args[1] = maddr >> 32;
538 mcl->args[2] = desc.a;
539 mcl->args[3] = desc.b;
540 }
Jeremy Fitzhardingec796f212010-12-16 14:33:27 -0800541
542 trace_xen_mc_entry(mcl, sizeof(maddr) == sizeof(long) ? 2 : 4);
Jeremy Fitzhardingea42089d2007-07-17 18:37:04 -0700543}
544
545static inline void
546MULTI_memory_op(struct multicall_entry *mcl, unsigned int cmd, void *arg)
547{
548 mcl->op = __HYPERVISOR_memory_op;
549 mcl->args[0] = cmd;
550 mcl->args[1] = (unsigned long)arg;
Jeremy Fitzhardingec796f212010-12-16 14:33:27 -0800551
552 trace_xen_mc_entry(mcl, 2);
Jeremy Fitzhardingea42089d2007-07-17 18:37:04 -0700553}
554
555static inline void
556MULTI_mmu_update(struct multicall_entry *mcl, struct mmu_update *req,
557 int count, int *success_count, domid_t domid)
558{
559 mcl->op = __HYPERVISOR_mmu_update;
560 mcl->args[0] = (unsigned long)req;
561 mcl->args[1] = count;
562 mcl->args[2] = (unsigned long)success_count;
563 mcl->args[3] = domid;
Jeremy Fitzhardingec796f212010-12-16 14:33:27 -0800564
565 trace_xen_mc_entry(mcl, 4);
Jeremy Fitzhardingea42089d2007-07-17 18:37:04 -0700566}
567
568static inline void
569MULTI_mmuext_op(struct multicall_entry *mcl, struct mmuext_op *op, int count,
570 int *success_count, domid_t domid)
571{
572 mcl->op = __HYPERVISOR_mmuext_op;
573 mcl->args[0] = (unsigned long)op;
574 mcl->args[1] = count;
575 mcl->args[2] = (unsigned long)success_count;
576 mcl->args[3] = domid;
Jeremy Fitzhardingec796f212010-12-16 14:33:27 -0800577
578 trace_xen_mc_entry(mcl, 4);
Jeremy Fitzhardingea42089d2007-07-17 18:37:04 -0700579}
Jeremy Fitzhardinge5ead97c2007-07-17 18:37:04 -0700580
581static inline void
582MULTI_set_gdt(struct multicall_entry *mcl, unsigned long *frames, int entries)
583{
584 mcl->op = __HYPERVISOR_set_gdt;
585 mcl->args[0] = (unsigned long)frames;
586 mcl->args[1] = entries;
Jeremy Fitzhardingec796f212010-12-16 14:33:27 -0800587
588 trace_xen_mc_entry(mcl, 2);
Jeremy Fitzhardinge5ead97c2007-07-17 18:37:04 -0700589}
590
591static inline void
592MULTI_stack_switch(struct multicall_entry *mcl,
593 unsigned long ss, unsigned long esp)
594{
595 mcl->op = __HYPERVISOR_stack_switch;
596 mcl->args[0] = ss;
597 mcl->args[1] = esp;
Jeremy Fitzhardingec796f212010-12-16 14:33:27 -0800598
599 trace_xen_mc_entry(mcl, 2);
Jeremy Fitzhardinge5ead97c2007-07-17 18:37:04 -0700600}
601
H. Peter Anvin05e4d312008-10-23 00:01:39 -0700602#endif /* _ASM_X86_XEN_HYPERCALL_H */