Commit | Line | Data |
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d3561b7f RR |
1 | /* Paravirtualization interfaces |
2 | Copyright (C) 2006 Rusty Russell IBM Corporation | |
3 | ||
4 | This program is free software; you can redistribute it and/or modify | |
5 | it under the terms of the GNU General Public License as published by | |
6 | the Free Software Foundation; either version 2 of the License, or | |
7 | (at your option) any later version. | |
8 | ||
9 | This program is distributed in the hope that it will be useful, | |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | GNU General Public License for more details. | |
13 | ||
14 | You should have received a copy of the GNU General Public License | |
15 | along with this program; if not, write to the Free Software | |
16 | Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
b1df07bd GOC |
17 | |
18 | 2007 - x86_64 support added by Glauber de Oliveira Costa, Red Hat Inc | |
d3561b7f | 19 | */ |
b1df07bd | 20 | |
d3561b7f | 21 | #include <linux/errno.h> |
186f4360 PG |
22 | #include <linux/init.h> |
23 | #include <linux/export.h> | |
d3561b7f RR |
24 | #include <linux/efi.h> |
25 | #include <linux/bcd.h> | |
ce6234b5 | 26 | #include <linux/highmem.h> |
376e2424 | 27 | #include <linux/kprobes.h> |
d3561b7f RR |
28 | |
29 | #include <asm/bug.h> | |
30 | #include <asm/paravirt.h> | |
50af5ead | 31 | #include <asm/debugreg.h> |
d3561b7f RR |
32 | #include <asm/desc.h> |
33 | #include <asm/setup.h> | |
a312b37b | 34 | #include <asm/pgtable.h> |
d3561b7f | 35 | #include <asm/time.h> |
eba0045f | 36 | #include <asm/pgalloc.h> |
d3561b7f RR |
37 | #include <asm/irq.h> |
38 | #include <asm/delay.h> | |
13623d79 RR |
39 | #include <asm/fixmap.h> |
40 | #include <asm/apic.h> | |
da181a8b | 41 | #include <asm/tlbflush.h> |
6cb9a835 | 42 | #include <asm/timer.h> |
f05e798a | 43 | #include <asm/special_insns.h> |
48a8b97c | 44 | #include <asm/tlb.h> |
d3561b7f | 45 | |
fc57a7c6 AL |
46 | /* |
47 | * nop stub, which must not clobber anything *including the stack* to | |
48 | * avoid confusing the entry prologues. | |
49 | */ | |
50 | extern void _paravirt_nop(void); | |
51 | asm (".pushsection .entry.text, \"ax\"\n" | |
52 | ".global _paravirt_nop\n" | |
53 | "_paravirt_nop:\n\t" | |
54 | "ret\n\t" | |
55 | ".size _paravirt_nop, . - _paravirt_nop\n\t" | |
56 | ".type _paravirt_nop, @function\n\t" | |
57 | ".popsection"); | |
d3561b7f | 58 | |
41edafdb | 59 | /* identity function, which can be inlined */ |
15301a57 | 60 | u32 notrace _paravirt_ident_32(u32 x) |
41edafdb JF |
61 | { |
62 | return x; | |
63 | } | |
64 | ||
15301a57 | 65 | u64 notrace _paravirt_ident_64(u64 x) |
41edafdb JF |
66 | { |
67 | return x; | |
68 | } | |
69 | ||
6f30c1ac | 70 | void __init default_banner(void) |
d3561b7f RR |
71 | { |
72 | printk(KERN_INFO "Booting paravirtualized kernel on %s\n", | |
93b1eab3 | 73 | pv_info.name); |
d3561b7f RR |
74 | } |
75 | ||
93b1eab3 JF |
76 | /* Undefined instruction for dealing with missing ops pointers. */ |
77 | static const unsigned char ud2a[] = { 0x0f, 0x0b }; | |
139ec7c4 | 78 | |
19d36ccd AK |
79 | struct branch { |
80 | unsigned char opcode; | |
81 | u32 delta; | |
82 | } __attribute__((packed)); | |
83 | ||
ab144f5e AK |
84 | unsigned paravirt_patch_call(void *insnbuf, |
85 | const void *target, u16 tgt_clobbers, | |
86 | unsigned long addr, u16 site_clobbers, | |
63f70270 JF |
87 | unsigned len) |
88 | { | |
ab144f5e AK |
89 | struct branch *b = insnbuf; |
90 | unsigned long delta = (unsigned long)target - (addr+5); | |
63f70270 | 91 | |
5800dc5c PZ |
92 | if (len < 5) { |
93 | #ifdef CONFIG_RETPOLINE | |
94 | WARN_ONCE("Failing to patch indirect CALL in %ps\n", (void *)addr); | |
95 | #endif | |
63f70270 | 96 | return len; /* call too long for patch site */ |
5800dc5c | 97 | } |
139ec7c4 | 98 | |
ab144f5e AK |
99 | b->opcode = 0xe8; /* call */ |
100 | b->delta = delta; | |
101 | BUILD_BUG_ON(sizeof(*b) != 5); | |
139ec7c4 | 102 | |
63f70270 JF |
103 | return 5; |
104 | } | |
105 | ||
93b1eab3 | 106 | unsigned paravirt_patch_jmp(void *insnbuf, const void *target, |
ab144f5e | 107 | unsigned long addr, unsigned len) |
63f70270 | 108 | { |
ab144f5e AK |
109 | struct branch *b = insnbuf; |
110 | unsigned long delta = (unsigned long)target - (addr+5); | |
63f70270 | 111 | |
5800dc5c PZ |
112 | if (len < 5) { |
113 | #ifdef CONFIG_RETPOLINE | |
114 | WARN_ONCE("Failing to patch indirect JMP in %ps\n", (void *)addr); | |
115 | #endif | |
63f70270 | 116 | return len; /* call too long for patch site */ |
5800dc5c | 117 | } |
63f70270 | 118 | |
ab144f5e AK |
119 | b->opcode = 0xe9; /* jmp */ |
120 | b->delta = delta; | |
63f70270 JF |
121 | |
122 | return 5; | |
123 | } | |
124 | ||
9043442b JG |
125 | DEFINE_STATIC_KEY_TRUE(virt_spin_lock_key); |
126 | ||
127 | void __init native_pv_lock_init(void) | |
128 | { | |
129 | if (!static_cpu_has(X86_FEATURE_HYPERVISOR)) | |
130 | static_branch_disable(&virt_spin_lock_key); | |
131 | } | |
132 | ||
133 | /* | |
134 | * Neat trick to map patch type back to the call within the | |
135 | * corresponding structure. | |
136 | */ | |
93b1eab3 JF |
137 | static void *get_call_destination(u8 type) |
138 | { | |
139 | struct paravirt_patch_template tmpl = { | |
140 | .pv_init_ops = pv_init_ops, | |
93b1eab3 JF |
141 | .pv_time_ops = pv_time_ops, |
142 | .pv_cpu_ops = pv_cpu_ops, | |
143 | .pv_irq_ops = pv_irq_ops, | |
93b1eab3 | 144 | .pv_mmu_ops = pv_mmu_ops, |
b4ecc126 | 145 | #ifdef CONFIG_PARAVIRT_SPINLOCKS |
74d4affd | 146 | .pv_lock_ops = pv_lock_ops, |
b4ecc126 | 147 | #endif |
93b1eab3 JF |
148 | }; |
149 | return *((void **)&tmpl + type); | |
150 | } | |
151 | ||
ab144f5e AK |
152 | unsigned paravirt_patch_default(u8 type, u16 clobbers, void *insnbuf, |
153 | unsigned long addr, unsigned len) | |
63f70270 | 154 | { |
93b1eab3 | 155 | void *opfunc = get_call_destination(type); |
63f70270 JF |
156 | unsigned ret; |
157 | ||
158 | if (opfunc == NULL) | |
159 | /* If there's no function, patch it with a ud2a (BUG) */ | |
93b1eab3 | 160 | ret = paravirt_patch_insns(insnbuf, len, ud2a, ud2a+sizeof(ud2a)); |
41edafdb | 161 | else if (opfunc == _paravirt_nop) |
79f1d836 | 162 | ret = 0; |
41edafdb JF |
163 | |
164 | /* identity functions just return their single argument */ | |
165 | else if (opfunc == _paravirt_ident_32) | |
166 | ret = paravirt_patch_ident_32(insnbuf, len); | |
167 | else if (opfunc == _paravirt_ident_64) | |
168 | ret = paravirt_patch_ident_64(insnbuf, len); | |
169 | ||
93b1eab3 | 170 | else if (type == PARAVIRT_PATCH(pv_cpu_ops.iret) || |
2be29982 | 171 | type == PARAVIRT_PATCH(pv_cpu_ops.usergs_sysret64)) |
63f70270 | 172 | /* If operation requires a jmp, then jmp */ |
93b1eab3 | 173 | ret = paravirt_patch_jmp(insnbuf, opfunc, addr, len); |
63f70270 JF |
174 | else |
175 | /* Otherwise call the function; assume target could | |
176 | clobber any caller-save reg */ | |
ab144f5e AK |
177 | ret = paravirt_patch_call(insnbuf, opfunc, CLBR_ANY, |
178 | addr, clobbers, len); | |
63f70270 JF |
179 | |
180 | return ret; | |
181 | } | |
182 | ||
ab144f5e | 183 | unsigned paravirt_patch_insns(void *insnbuf, unsigned len, |
63f70270 JF |
184 | const char *start, const char *end) |
185 | { | |
186 | unsigned insn_len = end - start; | |
139ec7c4 | 187 | |
63f70270 JF |
188 | if (insn_len > len || start == NULL) |
189 | insn_len = len; | |
190 | else | |
ab144f5e | 191 | memcpy(insnbuf, start, insn_len); |
139ec7c4 | 192 | |
139ec7c4 RR |
193 | return insn_len; |
194 | } | |
195 | ||
1a1eecd1 | 196 | static void native_flush_tlb(void) |
da181a8b RR |
197 | { |
198 | __native_flush_tlb(); | |
199 | } | |
200 | ||
201 | /* | |
202 | * Global pages have to be flushed a bit differently. Not a real | |
203 | * performance problem because this does not happen often. | |
204 | */ | |
1a1eecd1 | 205 | static void native_flush_tlb_global(void) |
da181a8b RR |
206 | { |
207 | __native_flush_tlb_global(); | |
208 | } | |
209 | ||
1299ef1d | 210 | static void native_flush_tlb_one_user(unsigned long addr) |
da181a8b | 211 | { |
1299ef1d | 212 | __native_flush_tlb_one_user(addr); |
da181a8b RR |
213 | } |
214 | ||
c5905afb IM |
215 | struct static_key paravirt_steal_enabled; |
216 | struct static_key paravirt_steal_rq_enabled; | |
3c404b57 GC |
217 | |
218 | static u64 native_steal_clock(int cpu) | |
219 | { | |
220 | return 0; | |
221 | } | |
222 | ||
d3561b7f | 223 | /* These are in entry.S */ |
1a1eecd1 | 224 | extern void native_iret(void); |
2be29982 | 225 | extern void native_usergs_sysret64(void); |
d3561b7f | 226 | |
d572929c JF |
227 | static struct resource reserve_ioports = { |
228 | .start = 0, | |
229 | .end = IO_SPACE_LIMIT, | |
230 | .name = "paravirt-ioport", | |
231 | .flags = IORESOURCE_IO | IORESOURCE_BUSY, | |
232 | }; | |
233 | ||
d572929c JF |
234 | /* |
235 | * Reserve the whole legacy IO space to prevent any legacy drivers | |
236 | * from wasting time probing for their hardware. This is a fairly | |
237 | * brute-force approach to disabling all non-virtual drivers. | |
238 | * | |
239 | * Note that this must be called very early to have any effect. | |
240 | */ | |
241 | int paravirt_disable_iospace(void) | |
242 | { | |
f7743fe6 | 243 | return request_resource(&ioport_resource, &reserve_ioports); |
d572929c JF |
244 | } |
245 | ||
8965c1c0 JF |
246 | static DEFINE_PER_CPU(enum paravirt_lazy_mode, paravirt_lazy_mode) = PARAVIRT_LAZY_NONE; |
247 | ||
248 | static inline void enter_lazy(enum paravirt_lazy_mode mode) | |
249 | { | |
c6ae41e7 | 250 | BUG_ON(this_cpu_read(paravirt_lazy_mode) != PARAVIRT_LAZY_NONE); |
8965c1c0 | 251 | |
c6ae41e7 | 252 | this_cpu_write(paravirt_lazy_mode, mode); |
8965c1c0 JF |
253 | } |
254 | ||
b407fc57 | 255 | static void leave_lazy(enum paravirt_lazy_mode mode) |
8965c1c0 | 256 | { |
c6ae41e7 | 257 | BUG_ON(this_cpu_read(paravirt_lazy_mode) != mode); |
8965c1c0 | 258 | |
c6ae41e7 | 259 | this_cpu_write(paravirt_lazy_mode, PARAVIRT_LAZY_NONE); |
8965c1c0 JF |
260 | } |
261 | ||
262 | void paravirt_enter_lazy_mmu(void) | |
263 | { | |
264 | enter_lazy(PARAVIRT_LAZY_MMU); | |
265 | } | |
266 | ||
267 | void paravirt_leave_lazy_mmu(void) | |
268 | { | |
b407fc57 | 269 | leave_lazy(PARAVIRT_LAZY_MMU); |
8965c1c0 JF |
270 | } |
271 | ||
511ba86e BO |
272 | void paravirt_flush_lazy_mmu(void) |
273 | { | |
274 | preempt_disable(); | |
275 | ||
276 | if (paravirt_get_lazy_mode() == PARAVIRT_LAZY_MMU) { | |
277 | arch_leave_lazy_mmu_mode(); | |
278 | arch_enter_lazy_mmu_mode(); | |
279 | } | |
280 | ||
281 | preempt_enable(); | |
282 | } | |
283 | ||
224101ed | 284 | void paravirt_start_context_switch(struct task_struct *prev) |
8965c1c0 | 285 | { |
2829b449 JF |
286 | BUG_ON(preemptible()); |
287 | ||
c6ae41e7 | 288 | if (this_cpu_read(paravirt_lazy_mode) == PARAVIRT_LAZY_MMU) { |
b407fc57 | 289 | arch_leave_lazy_mmu_mode(); |
224101ed | 290 | set_ti_thread_flag(task_thread_info(prev), TIF_LAZY_MMU_UPDATES); |
b407fc57 | 291 | } |
8965c1c0 JF |
292 | enter_lazy(PARAVIRT_LAZY_CPU); |
293 | } | |
294 | ||
224101ed | 295 | void paravirt_end_context_switch(struct task_struct *next) |
8965c1c0 | 296 | { |
2829b449 JF |
297 | BUG_ON(preemptible()); |
298 | ||
b407fc57 JF |
299 | leave_lazy(PARAVIRT_LAZY_CPU); |
300 | ||
224101ed | 301 | if (test_and_clear_ti_thread_flag(task_thread_info(next), TIF_LAZY_MMU_UPDATES)) |
b407fc57 | 302 | arch_enter_lazy_mmu_mode(); |
8965c1c0 JF |
303 | } |
304 | ||
305 | enum paravirt_lazy_mode paravirt_get_lazy_mode(void) | |
306 | { | |
b8bcfe99 JF |
307 | if (in_interrupt()) |
308 | return PARAVIRT_LAZY_NONE; | |
309 | ||
c6ae41e7 | 310 | return this_cpu_read(paravirt_lazy_mode); |
8965c1c0 JF |
311 | } |
312 | ||
93b1eab3 | 313 | struct pv_info pv_info = { |
d3561b7f | 314 | .name = "bare hardware", |
d3561b7f | 315 | .kernel_rpl = 0, |
5311ab62 | 316 | .shared_kernel_pmd = 1, /* Only used when CONFIG_X86_PAE is set */ |
318f5a2a AL |
317 | |
318 | #ifdef CONFIG_X86_64 | |
319 | .extra_user_64bit_cs = __USER_CS, | |
320 | #endif | |
93b1eab3 | 321 | }; |
d3561b7f | 322 | |
93b1eab3 JF |
323 | struct pv_init_ops pv_init_ops = { |
324 | .patch = native_patch, | |
93b1eab3 JF |
325 | }; |
326 | ||
327 | struct pv_time_ops pv_time_ops = { | |
93b1eab3 | 328 | .sched_clock = native_sched_clock, |
3c404b57 | 329 | .steal_clock = native_steal_clock, |
93b1eab3 JF |
330 | }; |
331 | ||
9a55fdbe | 332 | __visible struct pv_irq_ops pv_irq_ops = { |
ecb93d1c JF |
333 | .save_fl = __PV_IS_CALLEE_SAVE(native_save_fl), |
334 | .restore_fl = __PV_IS_CALLEE_SAVE(native_restore_fl), | |
335 | .irq_disable = __PV_IS_CALLEE_SAVE(native_irq_disable), | |
336 | .irq_enable = __PV_IS_CALLEE_SAVE(native_irq_enable), | |
93b1eab3 JF |
337 | .safe_halt = native_safe_halt, |
338 | .halt = native_halt, | |
339 | }; | |
d3561b7f | 340 | |
9a55fdbe | 341 | __visible struct pv_cpu_ops pv_cpu_ops = { |
d3561b7f RR |
342 | .cpuid = native_cpuid, |
343 | .get_debugreg = native_get_debugreg, | |
344 | .set_debugreg = native_set_debugreg, | |
d3561b7f RR |
345 | .read_cr0 = native_read_cr0, |
346 | .write_cr0 = native_write_cr0, | |
d3561b7f | 347 | .write_cr4 = native_write_cr4, |
88b4755f GOC |
348 | #ifdef CONFIG_X86_64 |
349 | .read_cr8 = native_read_cr8, | |
350 | .write_cr8 = native_write_cr8, | |
351 | #endif | |
d3561b7f | 352 | .wbinvd = native_wbinvd, |
dd2f4a00 AL |
353 | .read_msr = native_read_msr, |
354 | .write_msr = native_write_msr, | |
c2ee03b2 AL |
355 | .read_msr_safe = native_read_msr_safe, |
356 | .write_msr_safe = native_write_msr_safe, | |
d3561b7f RR |
357 | .read_pmc = native_read_pmc, |
358 | .load_tr_desc = native_load_tr_desc, | |
359 | .set_ldt = native_set_ldt, | |
360 | .load_gdt = native_load_gdt, | |
361 | .load_idt = native_load_idt, | |
d3561b7f RR |
362 | .store_tr = native_store_tr, |
363 | .load_tls = native_load_tls, | |
9f9d489a JF |
364 | #ifdef CONFIG_X86_64 |
365 | .load_gs_index = native_load_gs_index, | |
366 | #endif | |
75b8bb3e | 367 | .write_ldt_entry = native_write_ldt_entry, |
014b15be | 368 | .write_gdt_entry = native_write_gdt_entry, |
8d947344 | 369 | .write_idt_entry = native_write_idt_entry, |
38ffbe66 JF |
370 | |
371 | .alloc_ldt = paravirt_nop, | |
372 | .free_ldt = paravirt_nop, | |
373 | ||
faca6227 | 374 | .load_sp0 = native_load_sp0, |
d3561b7f | 375 | |
2be29982 | 376 | #ifdef CONFIG_X86_64 |
2be29982 | 377 | .usergs_sysret64 = native_usergs_sysret64, |
d75cd22f | 378 | #endif |
93b1eab3 | 379 | .iret = native_iret, |
e801f864 | 380 | .swapgs = native_swapgs, |
93b1eab3 | 381 | |
d3561b7f RR |
382 | .set_iopl_mask = native_set_iopl_mask, |
383 | .io_delay = native_io_delay, | |
8965c1c0 | 384 | |
224101ed JF |
385 | .start_context_switch = paravirt_nop, |
386 | .end_context_switch = paravirt_nop, | |
93b1eab3 | 387 | }; |
d3561b7f | 388 | |
80271972 | 389 | /* At this point, native_get/set_debugreg has real function entries */ |
376e2424 | 390 | NOKPROBE_SYMBOL(native_get_debugreg); |
80271972 MH |
391 | NOKPROBE_SYMBOL(native_set_debugreg); |
392 | NOKPROBE_SYMBOL(native_load_idt); | |
376e2424 | 393 | |
41edafdb JF |
394 | #if defined(CONFIG_X86_32) && !defined(CONFIG_X86_PAE) |
395 | /* 32-bit pagetable entries */ | |
da5de7c2 | 396 | #define PTE_IDENT __PV_IS_CALLEE_SAVE(_paravirt_ident_32) |
41edafdb JF |
397 | #else |
398 | /* 64-bit pagetable entries */ | |
da5de7c2 | 399 | #define PTE_IDENT __PV_IS_CALLEE_SAVE(_paravirt_ident_64) |
41edafdb JF |
400 | #endif |
401 | ||
404f6aac | 402 | struct pv_mmu_ops pv_mmu_ops __ro_after_init = { |
b239fb25 | 403 | |
93b1eab3 JF |
404 | .read_cr2 = native_read_cr2, |
405 | .write_cr2 = native_write_cr2, | |
6c690ee1 | 406 | .read_cr3 = __native_read_cr3, |
93b1eab3 JF |
407 | .write_cr3 = native_write_cr3, |
408 | ||
da181a8b RR |
409 | .flush_tlb_user = native_flush_tlb, |
410 | .flush_tlb_kernel = native_flush_tlb_global, | |
1299ef1d | 411 | .flush_tlb_one_user = native_flush_tlb_one_user, |
d4c10477 | 412 | .flush_tlb_others = native_flush_tlb_others, |
48a8b97c | 413 | .tlb_remove_table = (void (*)(struct mmu_gather *, void *))tlb_remove_page, |
da181a8b | 414 | |
eba0045f JF |
415 | .pgd_alloc = __paravirt_pgd_alloc, |
416 | .pgd_free = paravirt_nop, | |
417 | ||
6944a9c8 JF |
418 | .alloc_pte = paravirt_nop, |
419 | .alloc_pmd = paravirt_nop, | |
2761fa09 | 420 | .alloc_pud = paravirt_nop, |
335437fb | 421 | .alloc_p4d = paravirt_nop, |
6944a9c8 JF |
422 | .release_pte = paravirt_nop, |
423 | .release_pmd = paravirt_nop, | |
2761fa09 | 424 | .release_pud = paravirt_nop, |
335437fb | 425 | .release_p4d = paravirt_nop, |
c119ecce | 426 | |
da181a8b RR |
427 | .set_pte = native_set_pte, |
428 | .set_pte_at = native_set_pte_at, | |
429 | .set_pmd = native_set_pmd, | |
3dc494e8 | 430 | |
08b882c6 JF |
431 | .ptep_modify_prot_start = __ptep_modify_prot_start, |
432 | .ptep_modify_prot_commit = __ptep_modify_prot_commit, | |
433 | ||
98233368 | 434 | #if CONFIG_PGTABLE_LEVELS >= 3 |
da181a8b RR |
435 | #ifdef CONFIG_X86_PAE |
436 | .set_pte_atomic = native_set_pte_atomic, | |
da181a8b RR |
437 | .pte_clear = native_pte_clear, |
438 | .pmd_clear = native_pmd_clear, | |
f95f2f7b EH |
439 | #endif |
440 | .set_pud = native_set_pud, | |
da5de7c2 JF |
441 | |
442 | .pmd_val = PTE_IDENT, | |
443 | .make_pmd = PTE_IDENT, | |
f95f2f7b | 444 | |
f2a6a705 | 445 | #if CONFIG_PGTABLE_LEVELS >= 4 |
da5de7c2 JF |
446 | .pud_val = PTE_IDENT, |
447 | .make_pud = PTE_IDENT, | |
448 | ||
f2a6a705 KS |
449 | .set_p4d = native_set_p4d, |
450 | ||
451 | #if CONFIG_PGTABLE_LEVELS >= 5 | |
335437fb KS |
452 | .p4d_val = PTE_IDENT, |
453 | .make_p4d = PTE_IDENT, | |
454 | ||
455 | .set_pgd = native_set_pgd, | |
456 | #endif /* CONFIG_PGTABLE_LEVELS >= 5 */ | |
f2a6a705 | 457 | #endif /* CONFIG_PGTABLE_LEVELS >= 4 */ |
98233368 | 458 | #endif /* CONFIG_PGTABLE_LEVELS >= 3 */ |
da181a8b | 459 | |
da5de7c2 JF |
460 | .pte_val = PTE_IDENT, |
461 | .pgd_val = PTE_IDENT, | |
3dc494e8 | 462 | |
da5de7c2 JF |
463 | .make_pte = PTE_IDENT, |
464 | .make_pgd = PTE_IDENT, | |
3dc494e8 | 465 | |
d6dd61c8 JF |
466 | .dup_mmap = paravirt_nop, |
467 | .exit_mmap = paravirt_nop, | |
468 | .activate_mm = paravirt_nop, | |
8965c1c0 JF |
469 | |
470 | .lazy_mode = { | |
471 | .enter = paravirt_nop, | |
472 | .leave = paravirt_nop, | |
511ba86e | 473 | .flush = paravirt_nop, |
8965c1c0 | 474 | }, |
aeaaa59c JF |
475 | |
476 | .set_fixmap = native_set_fixmap, | |
d3561b7f | 477 | }; |
0dbe5a11 | 478 | |
93b1eab3 | 479 | EXPORT_SYMBOL_GPL(pv_time_ops); |
f97b8954 JF |
480 | EXPORT_SYMBOL (pv_cpu_ops); |
481 | EXPORT_SYMBOL (pv_mmu_ops); | |
93b1eab3 JF |
482 | EXPORT_SYMBOL_GPL(pv_info); |
483 | EXPORT_SYMBOL (pv_irq_ops); |