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a42089dd JF |
1 | /****************************************************************************** |
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 | ||
1965aae3 PA |
33 | #ifndef _ASM_X86_XEN__HYPERCALL_H |
34 | #define _ASM_X86_XEN__HYPERCALL_H | |
a42089dd JF |
35 | |
36 | #include <linux/errno.h> | |
37 | #include <linux/string.h> | |
38 | ||
39 | #include <xen/interface/xen.h> | |
40 | #include <xen/interface/sched.h> | |
41 | #include <xen/interface/physdev.h> | |
42 | ||
e7435902 JF |
43 | /* |
44 | * The hypercall asms have to meet several constraints: | |
45 | * - Work on 32- and 64-bit. | |
46 | * The two architectures put their arguments in different sets of | |
47 | * registers. | |
48 | * | |
49 | * - Work around asm syntax quirks | |
50 | * It isn't possible to specify one of the rNN registers in a | |
51 | * constraint, so we use explicit register variables to get the | |
52 | * args into the right place. | |
53 | * | |
54 | * - Mark all registers as potentially clobbered | |
55 | * Even unused parameters can be clobbered by the hypervisor, so we | |
56 | * need to make sure gcc knows it. | |
57 | * | |
58 | * - Avoid compiler bugs. | |
59 | * This is the tricky part. Because x86_32 has such a constrained | |
60 | * register set, gcc versions below 4.3 have trouble generating | |
61 | * code when all the arg registers and memory are trashed by the | |
62 | * asm. There are syntactically simpler ways of achieving the | |
63 | * semantics below, but they cause the compiler to crash. | |
64 | * | |
65 | * The only combination I found which works is: | |
66 | * - assign the __argX variables first | |
67 | * - list all actually used parameters as "+r" (__argX) | |
68 | * - clobber the rest | |
69 | * | |
70 | * The result certainly isn't pretty, and it really shows up cpp's | |
71 | * weakness as as macro language. Sorry. (But let's just give thanks | |
72 | * there aren't more than 5 arguments...) | |
73 | */ | |
74 | ||
a42089dd JF |
75 | extern struct { char _entry[32]; } hypercall_page[]; |
76 | ||
e7435902 JF |
77 | #define __HYPERCALL "call hypercall_page+%c[offset]" |
78 | #define __HYPERCALL_ENTRY(x) \ | |
79 | [offset] "i" (__HYPERVISOR_##x * sizeof(hypercall_page[0])) | |
80 | ||
81 | #ifdef CONFIG_X86_32 | |
82 | #define __HYPERCALL_RETREG "eax" | |
83 | #define __HYPERCALL_ARG1REG "ebx" | |
84 | #define __HYPERCALL_ARG2REG "ecx" | |
85 | #define __HYPERCALL_ARG3REG "edx" | |
86 | #define __HYPERCALL_ARG4REG "esi" | |
87 | #define __HYPERCALL_ARG5REG "edi" | |
88 | #else | |
89 | #define __HYPERCALL_RETREG "rax" | |
90 | #define __HYPERCALL_ARG1REG "rdi" | |
91 | #define __HYPERCALL_ARG2REG "rsi" | |
92 | #define __HYPERCALL_ARG3REG "rdx" | |
93 | #define __HYPERCALL_ARG4REG "r10" | |
94 | #define __HYPERCALL_ARG5REG "r8" | |
95 | #endif | |
96 | ||
97 | #define __HYPERCALL_DECLS \ | |
98 | register unsigned long __res asm(__HYPERCALL_RETREG); \ | |
99 | register unsigned long __arg1 asm(__HYPERCALL_ARG1REG) = __arg1; \ | |
100 | register unsigned long __arg2 asm(__HYPERCALL_ARG2REG) = __arg2; \ | |
101 | register unsigned long __arg3 asm(__HYPERCALL_ARG3REG) = __arg3; \ | |
102 | register unsigned long __arg4 asm(__HYPERCALL_ARG4REG) = __arg4; \ | |
103 | register unsigned long __arg5 asm(__HYPERCALL_ARG5REG) = __arg5; | |
104 | ||
105 | #define __HYPERCALL_0PARAM "=r" (__res) | |
106 | #define __HYPERCALL_1PARAM __HYPERCALL_0PARAM, "+r" (__arg1) | |
107 | #define __HYPERCALL_2PARAM __HYPERCALL_1PARAM, "+r" (__arg2) | |
108 | #define __HYPERCALL_3PARAM __HYPERCALL_2PARAM, "+r" (__arg3) | |
109 | #define __HYPERCALL_4PARAM __HYPERCALL_3PARAM, "+r" (__arg4) | |
110 | #define __HYPERCALL_5PARAM __HYPERCALL_4PARAM, "+r" (__arg5) | |
111 | ||
112 | #define __HYPERCALL_0ARG() | |
113 | #define __HYPERCALL_1ARG(a1) \ | |
114 | __HYPERCALL_0ARG() __arg1 = (unsigned long)(a1); | |
115 | #define __HYPERCALL_2ARG(a1,a2) \ | |
116 | __HYPERCALL_1ARG(a1) __arg2 = (unsigned long)(a2); | |
117 | #define __HYPERCALL_3ARG(a1,a2,a3) \ | |
118 | __HYPERCALL_2ARG(a1,a2) __arg3 = (unsigned long)(a3); | |
119 | #define __HYPERCALL_4ARG(a1,a2,a3,a4) \ | |
120 | __HYPERCALL_3ARG(a1,a2,a3) __arg4 = (unsigned long)(a4); | |
121 | #define __HYPERCALL_5ARG(a1,a2,a3,a4,a5) \ | |
122 | __HYPERCALL_4ARG(a1,a2,a3,a4) __arg5 = (unsigned long)(a5); | |
123 | ||
124 | #define __HYPERCALL_CLOBBER5 "memory" | |
125 | #define __HYPERCALL_CLOBBER4 __HYPERCALL_CLOBBER5, __HYPERCALL_ARG5REG | |
126 | #define __HYPERCALL_CLOBBER3 __HYPERCALL_CLOBBER4, __HYPERCALL_ARG4REG | |
127 | #define __HYPERCALL_CLOBBER2 __HYPERCALL_CLOBBER3, __HYPERCALL_ARG3REG | |
128 | #define __HYPERCALL_CLOBBER1 __HYPERCALL_CLOBBER2, __HYPERCALL_ARG2REG | |
129 | #define __HYPERCALL_CLOBBER0 __HYPERCALL_CLOBBER1, __HYPERCALL_ARG1REG | |
130 | ||
a42089dd JF |
131 | #define _hypercall0(type, name) \ |
132 | ({ \ | |
e7435902 JF |
133 | __HYPERCALL_DECLS; \ |
134 | __HYPERCALL_0ARG(); \ | |
135 | asm volatile (__HYPERCALL \ | |
136 | : __HYPERCALL_0PARAM \ | |
137 | : __HYPERCALL_ENTRY(name) \ | |
138 | : __HYPERCALL_CLOBBER0); \ | |
a42089dd JF |
139 | (type)__res; \ |
140 | }) | |
141 | ||
142 | #define _hypercall1(type, name, a1) \ | |
143 | ({ \ | |
e7435902 JF |
144 | __HYPERCALL_DECLS; \ |
145 | __HYPERCALL_1ARG(a1); \ | |
146 | asm volatile (__HYPERCALL \ | |
147 | : __HYPERCALL_1PARAM \ | |
148 | : __HYPERCALL_ENTRY(name) \ | |
149 | : __HYPERCALL_CLOBBER1); \ | |
a42089dd JF |
150 | (type)__res; \ |
151 | }) | |
152 | ||
153 | #define _hypercall2(type, name, a1, a2) \ | |
154 | ({ \ | |
e7435902 JF |
155 | __HYPERCALL_DECLS; \ |
156 | __HYPERCALL_2ARG(a1, a2); \ | |
157 | asm volatile (__HYPERCALL \ | |
158 | : __HYPERCALL_2PARAM \ | |
159 | : __HYPERCALL_ENTRY(name) \ | |
160 | : __HYPERCALL_CLOBBER2); \ | |
a42089dd JF |
161 | (type)__res; \ |
162 | }) | |
163 | ||
164 | #define _hypercall3(type, name, a1, a2, a3) \ | |
165 | ({ \ | |
e7435902 JF |
166 | __HYPERCALL_DECLS; \ |
167 | __HYPERCALL_3ARG(a1, a2, a3); \ | |
168 | asm volatile (__HYPERCALL \ | |
169 | : __HYPERCALL_3PARAM \ | |
170 | : __HYPERCALL_ENTRY(name) \ | |
171 | : __HYPERCALL_CLOBBER3); \ | |
a42089dd JF |
172 | (type)__res; \ |
173 | }) | |
174 | ||
175 | #define _hypercall4(type, name, a1, a2, a3, a4) \ | |
176 | ({ \ | |
e7435902 JF |
177 | __HYPERCALL_DECLS; \ |
178 | __HYPERCALL_4ARG(a1, a2, a3, a4); \ | |
179 | asm volatile (__HYPERCALL \ | |
180 | : __HYPERCALL_4PARAM \ | |
181 | : __HYPERCALL_ENTRY(name) \ | |
182 | : __HYPERCALL_CLOBBER4); \ | |
a42089dd JF |
183 | (type)__res; \ |
184 | }) | |
185 | ||
186 | #define _hypercall5(type, name, a1, a2, a3, a4, a5) \ | |
187 | ({ \ | |
e7435902 JF |
188 | __HYPERCALL_DECLS; \ |
189 | __HYPERCALL_5ARG(a1, a2, a3, a4, a5); \ | |
190 | asm volatile (__HYPERCALL \ | |
191 | : __HYPERCALL_5PARAM \ | |
192 | : __HYPERCALL_ENTRY(name) \ | |
193 | : __HYPERCALL_CLOBBER5); \ | |
a42089dd JF |
194 | (type)__res; \ |
195 | }) | |
196 | ||
197 | static inline int | |
198 | HYPERVISOR_set_trap_table(struct trap_info *table) | |
199 | { | |
200 | return _hypercall1(int, set_trap_table, table); | |
201 | } | |
202 | ||
203 | static inline int | |
204 | HYPERVISOR_mmu_update(struct mmu_update *req, int count, | |
205 | int *success_count, domid_t domid) | |
206 | { | |
207 | return _hypercall4(int, mmu_update, req, count, success_count, domid); | |
208 | } | |
209 | ||
210 | static inline int | |
211 | HYPERVISOR_mmuext_op(struct mmuext_op *op, int count, | |
212 | int *success_count, domid_t domid) | |
213 | { | |
214 | return _hypercall4(int, mmuext_op, op, count, success_count, domid); | |
215 | } | |
216 | ||
217 | static inline int | |
218 | HYPERVISOR_set_gdt(unsigned long *frame_list, int entries) | |
219 | { | |
220 | return _hypercall2(int, set_gdt, frame_list, entries); | |
221 | } | |
222 | ||
223 | static inline int | |
224 | HYPERVISOR_stack_switch(unsigned long ss, unsigned long esp) | |
225 | { | |
226 | return _hypercall2(int, stack_switch, ss, esp); | |
227 | } | |
228 | ||
88459d4c | 229 | #ifdef CONFIG_X86_32 |
a42089dd JF |
230 | static inline int |
231 | HYPERVISOR_set_callbacks(unsigned long event_selector, | |
232 | unsigned long event_address, | |
233 | unsigned long failsafe_selector, | |
234 | unsigned long failsafe_address) | |
235 | { | |
236 | return _hypercall4(int, set_callbacks, | |
237 | event_selector, event_address, | |
238 | failsafe_selector, failsafe_address); | |
239 | } | |
88459d4c JF |
240 | #else /* CONFIG_X86_64 */ |
241 | static inline int | |
242 | HYPERVISOR_set_callbacks(unsigned long event_address, | |
243 | unsigned long failsafe_address, | |
244 | unsigned long syscall_address) | |
245 | { | |
246 | return _hypercall3(int, set_callbacks, | |
247 | event_address, failsafe_address, | |
248 | syscall_address); | |
249 | } | |
250 | #endif /* CONFIG_X86_{32,64} */ | |
a42089dd | 251 | |
aa380c82 JF |
252 | static inline int |
253 | HYPERVISOR_callback_op(int cmd, void *arg) | |
254 | { | |
255 | return _hypercall2(int, callback_op, cmd, arg); | |
256 | } | |
257 | ||
a42089dd JF |
258 | static inline int |
259 | HYPERVISOR_fpu_taskswitch(int set) | |
260 | { | |
261 | return _hypercall1(int, fpu_taskswitch, set); | |
262 | } | |
263 | ||
264 | static inline int | |
349c709f | 265 | HYPERVISOR_sched_op(int cmd, void *arg) |
a42089dd | 266 | { |
349c709f | 267 | return _hypercall2(int, sched_op_new, cmd, arg); |
a42089dd JF |
268 | } |
269 | ||
270 | static inline long | |
271 | HYPERVISOR_set_timer_op(u64 timeout) | |
272 | { | |
273 | unsigned long timeout_hi = (unsigned long)(timeout>>32); | |
274 | unsigned long timeout_lo = (unsigned long)timeout; | |
275 | return _hypercall2(long, set_timer_op, timeout_lo, timeout_hi); | |
276 | } | |
277 | ||
278 | static inline int | |
279 | HYPERVISOR_set_debugreg(int reg, unsigned long value) | |
280 | { | |
281 | return _hypercall2(int, set_debugreg, reg, value); | |
282 | } | |
283 | ||
284 | static inline unsigned long | |
285 | HYPERVISOR_get_debugreg(int reg) | |
286 | { | |
287 | return _hypercall1(unsigned long, get_debugreg, reg); | |
288 | } | |
289 | ||
290 | static inline int | |
291 | HYPERVISOR_update_descriptor(u64 ma, u64 desc) | |
292 | { | |
293 | return _hypercall4(int, update_descriptor, ma, ma>>32, desc, desc>>32); | |
294 | } | |
295 | ||
296 | static inline int | |
297 | HYPERVISOR_memory_op(unsigned int cmd, void *arg) | |
298 | { | |
299 | return _hypercall2(int, memory_op, cmd, arg); | |
300 | } | |
301 | ||
302 | static inline int | |
303 | HYPERVISOR_multicall(void *call_list, int nr_calls) | |
304 | { | |
305 | return _hypercall2(int, multicall, call_list, nr_calls); | |
306 | } | |
307 | ||
308 | static inline int | |
309 | HYPERVISOR_update_va_mapping(unsigned long va, pte_t new_val, | |
310 | unsigned long flags) | |
311 | { | |
ca15f20f JF |
312 | if (sizeof(new_val) == sizeof(long)) |
313 | return _hypercall3(int, update_va_mapping, va, | |
314 | new_val.pte, flags); | |
315 | else | |
316 | return _hypercall4(int, update_va_mapping, va, | |
317 | new_val.pte, new_val.pte >> 32, flags); | |
a42089dd JF |
318 | } |
319 | ||
320 | static inline int | |
321 | HYPERVISOR_event_channel_op(int cmd, void *arg) | |
322 | { | |
323 | int rc = _hypercall2(int, event_channel_op, cmd, arg); | |
324 | if (unlikely(rc == -ENOSYS)) { | |
325 | struct evtchn_op op; | |
326 | op.cmd = cmd; | |
327 | memcpy(&op.u, arg, sizeof(op.u)); | |
328 | rc = _hypercall1(int, event_channel_op_compat, &op); | |
329 | memcpy(arg, &op.u, sizeof(op.u)); | |
330 | } | |
331 | return rc; | |
332 | } | |
333 | ||
334 | static inline int | |
335 | HYPERVISOR_xen_version(int cmd, void *arg) | |
336 | { | |
337 | return _hypercall2(int, xen_version, cmd, arg); | |
338 | } | |
339 | ||
340 | static inline int | |
341 | HYPERVISOR_console_io(int cmd, int count, char *str) | |
342 | { | |
343 | return _hypercall3(int, console_io, cmd, count, str); | |
344 | } | |
345 | ||
346 | static inline int | |
347 | HYPERVISOR_physdev_op(int cmd, void *arg) | |
348 | { | |
349 | int rc = _hypercall2(int, physdev_op, cmd, arg); | |
350 | if (unlikely(rc == -ENOSYS)) { | |
351 | struct physdev_op op; | |
352 | op.cmd = cmd; | |
353 | memcpy(&op.u, arg, sizeof(op.u)); | |
354 | rc = _hypercall1(int, physdev_op_compat, &op); | |
355 | memcpy(arg, &op.u, sizeof(op.u)); | |
356 | } | |
357 | return rc; | |
358 | } | |
359 | ||
360 | static inline int | |
361 | HYPERVISOR_grant_table_op(unsigned int cmd, void *uop, unsigned int count) | |
362 | { | |
363 | return _hypercall3(int, grant_table_op, cmd, uop, count); | |
364 | } | |
365 | ||
366 | static inline int | |
367 | HYPERVISOR_update_va_mapping_otherdomain(unsigned long va, pte_t new_val, | |
368 | unsigned long flags, domid_t domid) | |
369 | { | |
ca15f20f JF |
370 | if (sizeof(new_val) == sizeof(long)) |
371 | return _hypercall4(int, update_va_mapping_otherdomain, va, | |
372 | new_val.pte, flags, domid); | |
373 | else | |
374 | return _hypercall5(int, update_va_mapping_otherdomain, va, | |
375 | new_val.pte, new_val.pte >> 32, | |
376 | flags, domid); | |
a42089dd JF |
377 | } |
378 | ||
379 | static inline int | |
380 | HYPERVISOR_vm_assist(unsigned int cmd, unsigned int type) | |
381 | { | |
382 | return _hypercall2(int, vm_assist, cmd, type); | |
383 | } | |
384 | ||
385 | static inline int | |
386 | HYPERVISOR_vcpu_op(int cmd, int vcpuid, void *extra_args) | |
387 | { | |
388 | return _hypercall3(int, vcpu_op, cmd, vcpuid, extra_args); | |
389 | } | |
390 | ||
45eb0d88 EH |
391 | #ifdef CONFIG_X86_64 |
392 | static inline int | |
393 | HYPERVISOR_set_segment_base(int reg, unsigned long value) | |
394 | { | |
395 | return _hypercall2(int, set_segment_base, reg, value); | |
396 | } | |
397 | #endif | |
398 | ||
a42089dd JF |
399 | static inline int |
400 | HYPERVISOR_suspend(unsigned long srec) | |
401 | { | |
402 | return _hypercall3(int, sched_op, SCHEDOP_shutdown, | |
403 | SHUTDOWN_suspend, srec); | |
404 | } | |
405 | ||
406 | static inline int | |
407 | HYPERVISOR_nmi_op(unsigned long op, unsigned long arg) | |
408 | { | |
409 | return _hypercall2(int, nmi_op, op, arg); | |
410 | } | |
411 | ||
7b1333aa JF |
412 | static inline void |
413 | MULTI_fpu_taskswitch(struct multicall_entry *mcl, int set) | |
414 | { | |
415 | mcl->op = __HYPERVISOR_fpu_taskswitch; | |
416 | mcl->args[0] = set; | |
417 | } | |
418 | ||
a42089dd JF |
419 | static inline void |
420 | MULTI_update_va_mapping(struct multicall_entry *mcl, unsigned long va, | |
421 | pte_t new_val, unsigned long flags) | |
422 | { | |
423 | mcl->op = __HYPERVISOR_update_va_mapping; | |
424 | mcl->args[0] = va; | |
ca15f20f JF |
425 | if (sizeof(new_val) == sizeof(long)) { |
426 | mcl->args[1] = new_val.pte; | |
427 | mcl->args[2] = flags; | |
428 | } else { | |
429 | mcl->args[1] = new_val.pte; | |
430 | mcl->args[2] = new_val.pte >> 32; | |
431 | mcl->args[3] = flags; | |
432 | } | |
a42089dd JF |
433 | } |
434 | ||
435 | static inline void | |
436 | MULTI_grant_table_op(struct multicall_entry *mcl, unsigned int cmd, | |
437 | void *uop, unsigned int count) | |
438 | { | |
439 | mcl->op = __HYPERVISOR_grant_table_op; | |
440 | mcl->args[0] = cmd; | |
441 | mcl->args[1] = (unsigned long)uop; | |
442 | mcl->args[2] = count; | |
443 | } | |
444 | ||
445 | static inline void | |
446 | MULTI_update_va_mapping_otherdomain(struct multicall_entry *mcl, unsigned long va, | |
447 | pte_t new_val, unsigned long flags, | |
448 | domid_t domid) | |
449 | { | |
450 | mcl->op = __HYPERVISOR_update_va_mapping_otherdomain; | |
451 | mcl->args[0] = va; | |
ca15f20f JF |
452 | if (sizeof(new_val) == sizeof(long)) { |
453 | mcl->args[1] = new_val.pte; | |
454 | mcl->args[2] = flags; | |
455 | mcl->args[3] = domid; | |
456 | } else { | |
457 | mcl->args[1] = new_val.pte; | |
458 | mcl->args[2] = new_val.pte >> 32; | |
459 | mcl->args[3] = flags; | |
460 | mcl->args[4] = domid; | |
461 | } | |
a42089dd JF |
462 | } |
463 | ||
464 | static inline void | |
465 | MULTI_update_descriptor(struct multicall_entry *mcl, u64 maddr, | |
466 | struct desc_struct desc) | |
467 | { | |
468 | mcl->op = __HYPERVISOR_update_descriptor; | |
c05f1cfa JF |
469 | if (sizeof(maddr) == sizeof(long)) { |
470 | mcl->args[0] = maddr; | |
471 | mcl->args[1] = *(unsigned long *)&desc; | |
472 | } else { | |
473 | mcl->args[0] = maddr; | |
474 | mcl->args[1] = maddr >> 32; | |
475 | mcl->args[2] = desc.a; | |
476 | mcl->args[3] = desc.b; | |
477 | } | |
a42089dd JF |
478 | } |
479 | ||
480 | static inline void | |
481 | MULTI_memory_op(struct multicall_entry *mcl, unsigned int cmd, void *arg) | |
482 | { | |
483 | mcl->op = __HYPERVISOR_memory_op; | |
484 | mcl->args[0] = cmd; | |
485 | mcl->args[1] = (unsigned long)arg; | |
486 | } | |
487 | ||
488 | static inline void | |
489 | MULTI_mmu_update(struct multicall_entry *mcl, struct mmu_update *req, | |
490 | int count, int *success_count, domid_t domid) | |
491 | { | |
492 | mcl->op = __HYPERVISOR_mmu_update; | |
493 | mcl->args[0] = (unsigned long)req; | |
494 | mcl->args[1] = count; | |
495 | mcl->args[2] = (unsigned long)success_count; | |
496 | mcl->args[3] = domid; | |
497 | } | |
498 | ||
499 | static inline void | |
500 | MULTI_mmuext_op(struct multicall_entry *mcl, struct mmuext_op *op, int count, | |
501 | int *success_count, domid_t domid) | |
502 | { | |
503 | mcl->op = __HYPERVISOR_mmuext_op; | |
504 | mcl->args[0] = (unsigned long)op; | |
505 | mcl->args[1] = count; | |
506 | mcl->args[2] = (unsigned long)success_count; | |
507 | mcl->args[3] = domid; | |
508 | } | |
5ead97c8 JF |
509 | |
510 | static inline void | |
511 | MULTI_set_gdt(struct multicall_entry *mcl, unsigned long *frames, int entries) | |
512 | { | |
513 | mcl->op = __HYPERVISOR_set_gdt; | |
514 | mcl->args[0] = (unsigned long)frames; | |
515 | mcl->args[1] = entries; | |
516 | } | |
517 | ||
518 | static inline void | |
519 | MULTI_stack_switch(struct multicall_entry *mcl, | |
520 | unsigned long ss, unsigned long esp) | |
521 | { | |
522 | mcl->op = __HYPERVISOR_stack_switch; | |
523 | mcl->args[0] = ss; | |
524 | mcl->args[1] = esp; | |
525 | } | |
526 | ||
1965aae3 | 527 | #endif /* _ASM_X86_XEN__HYPERCALL_H */ |