Commit | Line | Data |
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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
1965aae3 PA |
2 | #ifndef _ASM_X86_PARAVIRT_H |
3 | #define _ASM_X86_PARAVIRT_H | |
d3561b7f RR |
4 | /* Various instructions on x86 need to be replaced for |
5 | * para-virtualization: those hooks are defined here. */ | |
b239fb25 JF |
6 | |
7 | #ifdef CONFIG_PARAVIRT | |
54321d94 | 8 | #include <asm/pgtable_types.h> |
658be9d3 | 9 | #include <asm/asm.h> |
3010a066 | 10 | #include <asm/nospec-branch.h> |
d3561b7f | 11 | |
ac5672f8 | 12 | #include <asm/paravirt_types.h> |
ecb93d1c | 13 | |
d3561b7f | 14 | #ifndef __ASSEMBLY__ |
187f1882 | 15 | #include <linux/bug.h> |
3dc494e8 | 16 | #include <linux/types.h> |
d4c10477 | 17 | #include <linux/cpumask.h> |
87b240cb | 18 | #include <asm/frame.h> |
1a45b7aa | 19 | |
fdc0269e JG |
20 | static inline unsigned long long paravirt_sched_clock(void) |
21 | { | |
22 | return PVOP_CALL0(unsigned long long, time.sched_clock); | |
23 | } | |
24 | ||
25 | struct static_key; | |
26 | extern struct static_key paravirt_steal_enabled; | |
27 | extern struct static_key paravirt_steal_rq_enabled; | |
28 | ||
89f579ce YW |
29 | __visible void __native_queued_spin_unlock(struct qspinlock *lock); |
30 | bool pv_is_native_spin_unlock(void); | |
31 | __visible bool __native_vcpu_is_preempted(long cpu); | |
32 | bool pv_is_native_vcpu_is_preempted(void); | |
33 | ||
fdc0269e JG |
34 | static inline u64 paravirt_steal_clock(int cpu) |
35 | { | |
36 | return PVOP_CALL1(u64, time.steal_clock, cpu); | |
37 | } | |
38 | ||
39 | /* The paravirtualized I/O functions */ | |
40 | static inline void slow_down_io(void) | |
41 | { | |
42 | pv_ops.cpu.io_delay(); | |
43 | #ifdef REALLY_SLOW_IO | |
44 | pv_ops.cpu.io_delay(); | |
45 | pv_ops.cpu.io_delay(); | |
46 | pv_ops.cpu.io_delay(); | |
47 | #endif | |
48 | } | |
49 | ||
50 | static inline void __flush_tlb(void) | |
51 | { | |
52 | PVOP_VCALL0(mmu.flush_tlb_user); | |
53 | } | |
54 | ||
55 | static inline void __flush_tlb_global(void) | |
56 | { | |
57 | PVOP_VCALL0(mmu.flush_tlb_kernel); | |
58 | } | |
59 | ||
60 | static inline void __flush_tlb_one_user(unsigned long addr) | |
61 | { | |
62 | PVOP_VCALL1(mmu.flush_tlb_one_user, addr); | |
63 | } | |
64 | ||
65 | static inline void flush_tlb_others(const struct cpumask *cpumask, | |
66 | const struct flush_tlb_info *info) | |
67 | { | |
68 | PVOP_VCALL2(mmu.flush_tlb_others, cpumask, info); | |
69 | } | |
70 | ||
71 | static inline void paravirt_tlb_remove_table(struct mmu_gather *tlb, void *table) | |
72 | { | |
73 | PVOP_VCALL2(mmu.tlb_remove_table, tlb, table); | |
74 | } | |
75 | ||
76 | static inline void paravirt_arch_exit_mmap(struct mm_struct *mm) | |
77 | { | |
78 | PVOP_VCALL1(mmu.exit_mmap, mm); | |
79 | } | |
80 | ||
9bad5658 | 81 | #ifdef CONFIG_PARAVIRT_XXL |
da51da18 | 82 | static inline void load_sp0(unsigned long sp0) |
d3561b7f | 83 | { |
5c83511b | 84 | PVOP_VCALL1(cpu.load_sp0, sp0); |
d3561b7f RR |
85 | } |
86 | ||
d3561b7f RR |
87 | /* The paravirtualized CPUID instruction. */ |
88 | static inline void __cpuid(unsigned int *eax, unsigned int *ebx, | |
89 | unsigned int *ecx, unsigned int *edx) | |
90 | { | |
5c83511b | 91 | PVOP_VCALL4(cpu.cpuid, eax, ebx, ecx, edx); |
d3561b7f RR |
92 | } |
93 | ||
94 | /* | |
95 | * These special macros can be used to get or set a debugging register | |
96 | */ | |
f8822f42 JF |
97 | static inline unsigned long paravirt_get_debugreg(int reg) |
98 | { | |
5c83511b | 99 | return PVOP_CALL1(unsigned long, cpu.get_debugreg, reg); |
f8822f42 JF |
100 | } |
101 | #define get_debugreg(var, reg) var = paravirt_get_debugreg(reg) | |
102 | static inline void set_debugreg(unsigned long val, int reg) | |
103 | { | |
5c83511b | 104 | PVOP_VCALL2(cpu.set_debugreg, reg, val); |
f8822f42 | 105 | } |
d3561b7f | 106 | |
f8822f42 JF |
107 | static inline unsigned long read_cr0(void) |
108 | { | |
5c83511b | 109 | return PVOP_CALL0(unsigned long, cpu.read_cr0); |
f8822f42 | 110 | } |
d3561b7f | 111 | |
f8822f42 JF |
112 | static inline void write_cr0(unsigned long x) |
113 | { | |
5c83511b | 114 | PVOP_VCALL1(cpu.write_cr0, x); |
f8822f42 JF |
115 | } |
116 | ||
117 | static inline unsigned long read_cr2(void) | |
118 | { | |
55aedddb | 119 | return PVOP_CALLEE0(unsigned long, mmu.read_cr2); |
f8822f42 JF |
120 | } |
121 | ||
122 | static inline void write_cr2(unsigned long x) | |
123 | { | |
5c83511b | 124 | PVOP_VCALL1(mmu.write_cr2, x); |
f8822f42 JF |
125 | } |
126 | ||
6c690ee1 | 127 | static inline unsigned long __read_cr3(void) |
f8822f42 | 128 | { |
5c83511b | 129 | return PVOP_CALL0(unsigned long, mmu.read_cr3); |
f8822f42 | 130 | } |
d3561b7f | 131 | |
f8822f42 JF |
132 | static inline void write_cr3(unsigned long x) |
133 | { | |
5c83511b | 134 | PVOP_VCALL1(mmu.write_cr3, x); |
f8822f42 | 135 | } |
d3561b7f | 136 | |
1e02ce4c | 137 | static inline void __write_cr4(unsigned long x) |
f8822f42 | 138 | { |
5c83511b | 139 | PVOP_VCALL1(cpu.write_cr4, x); |
f8822f42 | 140 | } |
3dc494e8 | 141 | |
df9ee292 | 142 | static inline void arch_safe_halt(void) |
d3561b7f | 143 | { |
5c83511b | 144 | PVOP_VCALL0(irq.safe_halt); |
d3561b7f RR |
145 | } |
146 | ||
147 | static inline void halt(void) | |
148 | { | |
5c83511b | 149 | PVOP_VCALL0(irq.halt); |
f8822f42 JF |
150 | } |
151 | ||
152 | static inline void wbinvd(void) | |
153 | { | |
5c83511b | 154 | PVOP_VCALL0(cpu.wbinvd); |
d3561b7f | 155 | } |
d3561b7f | 156 | |
93b1eab3 | 157 | #define get_kernel_rpl() (pv_info.kernel_rpl) |
d3561b7f | 158 | |
dd2f4a00 AL |
159 | static inline u64 paravirt_read_msr(unsigned msr) |
160 | { | |
5c83511b | 161 | return PVOP_CALL1(u64, cpu.read_msr, msr); |
dd2f4a00 AL |
162 | } |
163 | ||
164 | static inline void paravirt_write_msr(unsigned msr, | |
165 | unsigned low, unsigned high) | |
166 | { | |
5c83511b | 167 | PVOP_VCALL3(cpu.write_msr, msr, low, high); |
dd2f4a00 AL |
168 | } |
169 | ||
c2ee03b2 | 170 | static inline u64 paravirt_read_msr_safe(unsigned msr, int *err) |
f8822f42 | 171 | { |
5c83511b | 172 | return PVOP_CALL2(u64, cpu.read_msr_safe, msr, err); |
f8822f42 | 173 | } |
132ec92f | 174 | |
c2ee03b2 AL |
175 | static inline int paravirt_write_msr_safe(unsigned msr, |
176 | unsigned low, unsigned high) | |
f8822f42 | 177 | { |
5c83511b | 178 | return PVOP_CALL3(int, cpu.write_msr_safe, msr, low, high); |
f8822f42 JF |
179 | } |
180 | ||
49cd740b JP |
181 | #define rdmsr(msr, val1, val2) \ |
182 | do { \ | |
4985ce15 | 183 | u64 _l = paravirt_read_msr(msr); \ |
f8822f42 JF |
184 | val1 = (u32)_l; \ |
185 | val2 = _l >> 32; \ | |
49cd740b | 186 | } while (0) |
d3561b7f | 187 | |
49cd740b JP |
188 | #define wrmsr(msr, val1, val2) \ |
189 | do { \ | |
4985ce15 | 190 | paravirt_write_msr(msr, val1, val2); \ |
49cd740b | 191 | } while (0) |
d3561b7f | 192 | |
49cd740b JP |
193 | #define rdmsrl(msr, val) \ |
194 | do { \ | |
4985ce15 | 195 | val = paravirt_read_msr(msr); \ |
49cd740b | 196 | } while (0) |
d3561b7f | 197 | |
47edb651 AL |
198 | static inline void wrmsrl(unsigned msr, u64 val) |
199 | { | |
200 | wrmsr(msr, (u32)val, (u32)(val>>32)); | |
201 | } | |
202 | ||
c2ee03b2 | 203 | #define wrmsr_safe(msr, a, b) paravirt_write_msr_safe(msr, a, b) |
d3561b7f RR |
204 | |
205 | /* rdmsr with exception handling */ | |
c2ee03b2 AL |
206 | #define rdmsr_safe(msr, a, b) \ |
207 | ({ \ | |
208 | int _err; \ | |
209 | u64 _l = paravirt_read_msr_safe(msr, &_err); \ | |
210 | (*a) = (u32)_l; \ | |
211 | (*b) = _l >> 32; \ | |
212 | _err; \ | |
49cd740b | 213 | }) |
d3561b7f | 214 | |
1de87bd4 AK |
215 | static inline int rdmsrl_safe(unsigned msr, unsigned long long *p) |
216 | { | |
217 | int err; | |
218 | ||
c2ee03b2 | 219 | *p = paravirt_read_msr_safe(msr, &err); |
1de87bd4 AK |
220 | return err; |
221 | } | |
177fed1e | 222 | |
f8822f42 JF |
223 | static inline unsigned long long paravirt_read_pmc(int counter) |
224 | { | |
5c83511b | 225 | return PVOP_CALL1(u64, cpu.read_pmc, counter); |
f8822f42 | 226 | } |
d3561b7f | 227 | |
49cd740b JP |
228 | #define rdpmc(counter, low, high) \ |
229 | do { \ | |
f8822f42 JF |
230 | u64 _l = paravirt_read_pmc(counter); \ |
231 | low = (u32)_l; \ | |
232 | high = _l >> 32; \ | |
49cd740b | 233 | } while (0) |
3dc494e8 | 234 | |
1ff4d58a AK |
235 | #define rdpmcl(counter, val) ((val) = paravirt_read_pmc(counter)) |
236 | ||
38ffbe66 JF |
237 | static inline void paravirt_alloc_ldt(struct desc_struct *ldt, unsigned entries) |
238 | { | |
5c83511b | 239 | PVOP_VCALL2(cpu.alloc_ldt, ldt, entries); |
38ffbe66 JF |
240 | } |
241 | ||
242 | static inline void paravirt_free_ldt(struct desc_struct *ldt, unsigned entries) | |
243 | { | |
5c83511b | 244 | PVOP_VCALL2(cpu.free_ldt, ldt, entries); |
38ffbe66 JF |
245 | } |
246 | ||
f8822f42 JF |
247 | static inline void load_TR_desc(void) |
248 | { | |
5c83511b | 249 | PVOP_VCALL0(cpu.load_tr_desc); |
f8822f42 | 250 | } |
6b68f01b | 251 | static inline void load_gdt(const struct desc_ptr *dtr) |
f8822f42 | 252 | { |
5c83511b | 253 | PVOP_VCALL1(cpu.load_gdt, dtr); |
f8822f42 | 254 | } |
6b68f01b | 255 | static inline void load_idt(const struct desc_ptr *dtr) |
f8822f42 | 256 | { |
5c83511b | 257 | PVOP_VCALL1(cpu.load_idt, dtr); |
f8822f42 JF |
258 | } |
259 | static inline void set_ldt(const void *addr, unsigned entries) | |
260 | { | |
5c83511b | 261 | PVOP_VCALL2(cpu.set_ldt, addr, entries); |
f8822f42 | 262 | } |
f8822f42 JF |
263 | static inline unsigned long paravirt_store_tr(void) |
264 | { | |
5c83511b | 265 | return PVOP_CALL0(unsigned long, cpu.store_tr); |
f8822f42 | 266 | } |
9bad5658 | 267 | |
f8822f42 JF |
268 | #define store_tr(tr) ((tr) = paravirt_store_tr()) |
269 | static inline void load_TLS(struct thread_struct *t, unsigned cpu) | |
270 | { | |
5c83511b | 271 | PVOP_VCALL2(cpu.load_tls, t, cpu); |
f8822f42 | 272 | } |
75b8bb3e | 273 | |
9f9d489a JF |
274 | #ifdef CONFIG_X86_64 |
275 | static inline void load_gs_index(unsigned int gs) | |
276 | { | |
5c83511b | 277 | PVOP_VCALL1(cpu.load_gs_index, gs); |
9f9d489a JF |
278 | } |
279 | #endif | |
280 | ||
75b8bb3e GOC |
281 | static inline void write_ldt_entry(struct desc_struct *dt, int entry, |
282 | const void *desc) | |
f8822f42 | 283 | { |
5c83511b | 284 | PVOP_VCALL3(cpu.write_ldt_entry, dt, entry, desc); |
f8822f42 | 285 | } |
014b15be GOC |
286 | |
287 | static inline void write_gdt_entry(struct desc_struct *dt, int entry, | |
288 | void *desc, int type) | |
f8822f42 | 289 | { |
5c83511b | 290 | PVOP_VCALL4(cpu.write_gdt_entry, dt, entry, desc, type); |
f8822f42 | 291 | } |
014b15be | 292 | |
8d947344 | 293 | static inline void write_idt_entry(gate_desc *dt, int entry, const gate_desc *g) |
f8822f42 | 294 | { |
5c83511b | 295 | PVOP_VCALL3(cpu.write_idt_entry, dt, entry, g); |
f8822f42 JF |
296 | } |
297 | static inline void set_iopl_mask(unsigned mask) | |
298 | { | |
5c83511b | 299 | PVOP_VCALL1(cpu.set_iopl_mask, mask); |
f8822f42 | 300 | } |
d3561b7f | 301 | |
d6dd61c8 JF |
302 | static inline void paravirt_activate_mm(struct mm_struct *prev, |
303 | struct mm_struct *next) | |
304 | { | |
5c83511b | 305 | PVOP_VCALL2(mmu.activate_mm, prev, next); |
d6dd61c8 JF |
306 | } |
307 | ||
a1ea1c03 DH |
308 | static inline void paravirt_arch_dup_mmap(struct mm_struct *oldmm, |
309 | struct mm_struct *mm) | |
d6dd61c8 | 310 | { |
5c83511b | 311 | PVOP_VCALL2(mmu.dup_mmap, oldmm, mm); |
d6dd61c8 JF |
312 | } |
313 | ||
eba0045f JF |
314 | static inline int paravirt_pgd_alloc(struct mm_struct *mm) |
315 | { | |
5c83511b | 316 | return PVOP_CALL1(int, mmu.pgd_alloc, mm); |
eba0045f JF |
317 | } |
318 | ||
319 | static inline void paravirt_pgd_free(struct mm_struct *mm, pgd_t *pgd) | |
320 | { | |
5c83511b | 321 | PVOP_VCALL2(mmu.pgd_free, mm, pgd); |
eba0045f JF |
322 | } |
323 | ||
f8639939 | 324 | static inline void paravirt_alloc_pte(struct mm_struct *mm, unsigned long pfn) |
f8822f42 | 325 | { |
5c83511b | 326 | PVOP_VCALL2(mmu.alloc_pte, mm, pfn); |
f8822f42 | 327 | } |
f8639939 | 328 | static inline void paravirt_release_pte(unsigned long pfn) |
f8822f42 | 329 | { |
5c83511b | 330 | PVOP_VCALL1(mmu.release_pte, pfn); |
f8822f42 | 331 | } |
c119ecce | 332 | |
f8639939 | 333 | static inline void paravirt_alloc_pmd(struct mm_struct *mm, unsigned long pfn) |
f8822f42 | 334 | { |
5c83511b | 335 | PVOP_VCALL2(mmu.alloc_pmd, mm, pfn); |
f8822f42 | 336 | } |
c119ecce | 337 | |
f8639939 | 338 | static inline void paravirt_release_pmd(unsigned long pfn) |
da181a8b | 339 | { |
5c83511b | 340 | PVOP_VCALL1(mmu.release_pmd, pfn); |
da181a8b RR |
341 | } |
342 | ||
f8639939 | 343 | static inline void paravirt_alloc_pud(struct mm_struct *mm, unsigned long pfn) |
2761fa09 | 344 | { |
5c83511b | 345 | PVOP_VCALL2(mmu.alloc_pud, mm, pfn); |
2761fa09 | 346 | } |
f8639939 | 347 | static inline void paravirt_release_pud(unsigned long pfn) |
2761fa09 | 348 | { |
5c83511b | 349 | PVOP_VCALL1(mmu.release_pud, pfn); |
2761fa09 JF |
350 | } |
351 | ||
335437fb KS |
352 | static inline void paravirt_alloc_p4d(struct mm_struct *mm, unsigned long pfn) |
353 | { | |
5c83511b | 354 | PVOP_VCALL2(mmu.alloc_p4d, mm, pfn); |
335437fb KS |
355 | } |
356 | ||
357 | static inline void paravirt_release_p4d(unsigned long pfn) | |
358 | { | |
5c83511b | 359 | PVOP_VCALL1(mmu.release_p4d, pfn); |
335437fb KS |
360 | } |
361 | ||
773221f4 | 362 | static inline pte_t __pte(pteval_t val) |
da181a8b | 363 | { |
773221f4 JF |
364 | pteval_t ret; |
365 | ||
366 | if (sizeof(pteval_t) > sizeof(long)) | |
5c83511b | 367 | ret = PVOP_CALLEE2(pteval_t, mmu.make_pte, val, (u64)val >> 32); |
773221f4 | 368 | else |
5c83511b | 369 | ret = PVOP_CALLEE1(pteval_t, mmu.make_pte, val); |
773221f4 | 370 | |
c8e5393a | 371 | return (pte_t) { .pte = ret }; |
da181a8b RR |
372 | } |
373 | ||
773221f4 JF |
374 | static inline pteval_t pte_val(pte_t pte) |
375 | { | |
376 | pteval_t ret; | |
377 | ||
378 | if (sizeof(pteval_t) > sizeof(long)) | |
5c83511b | 379 | ret = PVOP_CALLEE2(pteval_t, mmu.pte_val, |
da5de7c2 | 380 | pte.pte, (u64)pte.pte >> 32); |
773221f4 | 381 | else |
5c83511b | 382 | ret = PVOP_CALLEE1(pteval_t, mmu.pte_val, pte.pte); |
773221f4 JF |
383 | |
384 | return ret; | |
385 | } | |
386 | ||
ef38503e | 387 | static inline pgd_t __pgd(pgdval_t val) |
da181a8b | 388 | { |
ef38503e JF |
389 | pgdval_t ret; |
390 | ||
391 | if (sizeof(pgdval_t) > sizeof(long)) | |
5c83511b | 392 | ret = PVOP_CALLEE2(pgdval_t, mmu.make_pgd, val, (u64)val >> 32); |
ef38503e | 393 | else |
5c83511b | 394 | ret = PVOP_CALLEE1(pgdval_t, mmu.make_pgd, val); |
ef38503e JF |
395 | |
396 | return (pgd_t) { ret }; | |
397 | } | |
398 | ||
399 | static inline pgdval_t pgd_val(pgd_t pgd) | |
400 | { | |
401 | pgdval_t ret; | |
402 | ||
403 | if (sizeof(pgdval_t) > sizeof(long)) | |
5c83511b | 404 | ret = PVOP_CALLEE2(pgdval_t, mmu.pgd_val, |
da5de7c2 | 405 | pgd.pgd, (u64)pgd.pgd >> 32); |
ef38503e | 406 | else |
5c83511b | 407 | ret = PVOP_CALLEE1(pgdval_t, mmu.pgd_val, pgd.pgd); |
ef38503e JF |
408 | |
409 | return ret; | |
f8822f42 JF |
410 | } |
411 | ||
08b882c6 | 412 | #define __HAVE_ARCH_PTEP_MODIFY_PROT_TRANSACTION |
0cbe3e26 | 413 | static inline pte_t ptep_modify_prot_start(struct vm_area_struct *vma, unsigned long addr, |
08b882c6 JF |
414 | pte_t *ptep) |
415 | { | |
416 | pteval_t ret; | |
417 | ||
0cbe3e26 | 418 | ret = PVOP_CALL3(pteval_t, mmu.ptep_modify_prot_start, vma, addr, ptep); |
08b882c6 JF |
419 | |
420 | return (pte_t) { .pte = ret }; | |
421 | } | |
422 | ||
0cbe3e26 | 423 | static inline void ptep_modify_prot_commit(struct vm_area_struct *vma, unsigned long addr, |
04a86453 | 424 | pte_t *ptep, pte_t old_pte, pte_t pte) |
08b882c6 | 425 | { |
0cbe3e26 | 426 | |
08b882c6 JF |
427 | if (sizeof(pteval_t) > sizeof(long)) |
428 | /* 5 arg words */ | |
0cbe3e26 | 429 | pv_ops.mmu.ptep_modify_prot_commit(vma, addr, ptep, pte); |
08b882c6 | 430 | else |
5c83511b | 431 | PVOP_VCALL4(mmu.ptep_modify_prot_commit, |
0cbe3e26 | 432 | vma, addr, ptep, pte.pte); |
08b882c6 JF |
433 | } |
434 | ||
4eed80cd JF |
435 | static inline void set_pte(pte_t *ptep, pte_t pte) |
436 | { | |
437 | if (sizeof(pteval_t) > sizeof(long)) | |
5c83511b | 438 | PVOP_VCALL3(mmu.set_pte, ptep, pte.pte, (u64)pte.pte >> 32); |
4eed80cd | 439 | else |
5c83511b | 440 | PVOP_VCALL2(mmu.set_pte, ptep, pte.pte); |
4eed80cd JF |
441 | } |
442 | ||
443 | static inline void set_pte_at(struct mm_struct *mm, unsigned long addr, | |
444 | pte_t *ptep, pte_t pte) | |
445 | { | |
446 | if (sizeof(pteval_t) > sizeof(long)) | |
447 | /* 5 arg words */ | |
5c83511b | 448 | pv_ops.mmu.set_pte_at(mm, addr, ptep, pte); |
4eed80cd | 449 | else |
5c83511b | 450 | PVOP_VCALL4(mmu.set_pte_at, mm, addr, ptep, pte.pte); |
4eed80cd JF |
451 | } |
452 | ||
60b3f626 JF |
453 | static inline void set_pmd(pmd_t *pmdp, pmd_t pmd) |
454 | { | |
455 | pmdval_t val = native_pmd_val(pmd); | |
456 | ||
457 | if (sizeof(pmdval_t) > sizeof(long)) | |
5c83511b | 458 | PVOP_VCALL3(mmu.set_pmd, pmdp, val, (u64)val >> 32); |
60b3f626 | 459 | else |
5c83511b | 460 | PVOP_VCALL2(mmu.set_pmd, pmdp, val); |
60b3f626 JF |
461 | } |
462 | ||
98233368 | 463 | #if CONFIG_PGTABLE_LEVELS >= 3 |
1fe91514 GOC |
464 | static inline pmd_t __pmd(pmdval_t val) |
465 | { | |
466 | pmdval_t ret; | |
467 | ||
468 | if (sizeof(pmdval_t) > sizeof(long)) | |
5c83511b | 469 | ret = PVOP_CALLEE2(pmdval_t, mmu.make_pmd, val, (u64)val >> 32); |
1fe91514 | 470 | else |
5c83511b | 471 | ret = PVOP_CALLEE1(pmdval_t, mmu.make_pmd, val); |
1fe91514 GOC |
472 | |
473 | return (pmd_t) { ret }; | |
474 | } | |
475 | ||
476 | static inline pmdval_t pmd_val(pmd_t pmd) | |
477 | { | |
478 | pmdval_t ret; | |
479 | ||
480 | if (sizeof(pmdval_t) > sizeof(long)) | |
5c83511b | 481 | ret = PVOP_CALLEE2(pmdval_t, mmu.pmd_val, |
da5de7c2 | 482 | pmd.pmd, (u64)pmd.pmd >> 32); |
1fe91514 | 483 | else |
5c83511b | 484 | ret = PVOP_CALLEE1(pmdval_t, mmu.pmd_val, pmd.pmd); |
1fe91514 GOC |
485 | |
486 | return ret; | |
487 | } | |
488 | ||
489 | static inline void set_pud(pud_t *pudp, pud_t pud) | |
490 | { | |
491 | pudval_t val = native_pud_val(pud); | |
492 | ||
493 | if (sizeof(pudval_t) > sizeof(long)) | |
5c83511b | 494 | PVOP_VCALL3(mmu.set_pud, pudp, val, (u64)val >> 32); |
1fe91514 | 495 | else |
5c83511b | 496 | PVOP_VCALL2(mmu.set_pud, pudp, val); |
1fe91514 | 497 | } |
f2a6a705 | 498 | #if CONFIG_PGTABLE_LEVELS >= 4 |
9042219c EH |
499 | static inline pud_t __pud(pudval_t val) |
500 | { | |
501 | pudval_t ret; | |
502 | ||
495310e4 | 503 | ret = PVOP_CALLEE1(pudval_t, mmu.make_pud, val); |
9042219c EH |
504 | |
505 | return (pud_t) { ret }; | |
506 | } | |
507 | ||
508 | static inline pudval_t pud_val(pud_t pud) | |
509 | { | |
495310e4 | 510 | return PVOP_CALLEE1(pudval_t, mmu.pud_val, pud.pud); |
9042219c EH |
511 | } |
512 | ||
f2a6a705 KS |
513 | static inline void pud_clear(pud_t *pudp) |
514 | { | |
515 | set_pud(pudp, __pud(0)); | |
516 | } | |
517 | ||
518 | static inline void set_p4d(p4d_t *p4dp, p4d_t p4d) | |
519 | { | |
520 | p4dval_t val = native_p4d_val(p4d); | |
521 | ||
495310e4 | 522 | PVOP_VCALL2(mmu.set_p4d, p4dp, val); |
f2a6a705 KS |
523 | } |
524 | ||
335437fb KS |
525 | #if CONFIG_PGTABLE_LEVELS >= 5 |
526 | ||
527 | static inline p4d_t __p4d(p4dval_t val) | |
f2a6a705 | 528 | { |
5c83511b | 529 | p4dval_t ret = PVOP_CALLEE1(p4dval_t, mmu.make_p4d, val); |
f2a6a705 | 530 | |
335437fb KS |
531 | return (p4d_t) { ret }; |
532 | } | |
f2a6a705 | 533 | |
335437fb KS |
534 | static inline p4dval_t p4d_val(p4d_t p4d) |
535 | { | |
5c83511b | 536 | return PVOP_CALLEE1(p4dval_t, mmu.p4d_val, p4d.p4d); |
335437fb | 537 | } |
f2a6a705 | 538 | |
92e1c5b3 | 539 | static inline void __set_pgd(pgd_t *pgdp, pgd_t pgd) |
9042219c | 540 | { |
5c83511b | 541 | PVOP_VCALL2(mmu.set_pgd, pgdp, native_pgd_val(pgd)); |
9042219c EH |
542 | } |
543 | ||
92e1c5b3 | 544 | #define set_pgd(pgdp, pgdval) do { \ |
ed7588d5 | 545 | if (pgtable_l5_enabled()) \ |
92e1c5b3 KS |
546 | __set_pgd(pgdp, pgdval); \ |
547 | else \ | |
548 | set_p4d((p4d_t *)(pgdp), (p4d_t) { (pgdval).pgd }); \ | |
549 | } while (0) | |
550 | ||
551 | #define pgd_clear(pgdp) do { \ | |
ed7588d5 | 552 | if (pgtable_l5_enabled()) \ |
92e1c5b3 KS |
553 | set_pgd(pgdp, __pgd(0)); \ |
554 | } while (0) | |
9042219c | 555 | |
f2a6a705 | 556 | #endif /* CONFIG_PGTABLE_LEVELS == 5 */ |
9042219c | 557 | |
335437fb KS |
558 | static inline void p4d_clear(p4d_t *p4dp) |
559 | { | |
560 | set_p4d(p4dp, __p4d(0)); | |
561 | } | |
562 | ||
98233368 | 563 | #endif /* CONFIG_PGTABLE_LEVELS == 4 */ |
9042219c | 564 | |
98233368 | 565 | #endif /* CONFIG_PGTABLE_LEVELS >= 3 */ |
1fe91514 | 566 | |
4eed80cd JF |
567 | #ifdef CONFIG_X86_PAE |
568 | /* Special-case pte-setting operations for PAE, which can't update a | |
569 | 64-bit pte atomically */ | |
570 | static inline void set_pte_atomic(pte_t *ptep, pte_t pte) | |
571 | { | |
5c83511b | 572 | PVOP_VCALL3(mmu.set_pte_atomic, ptep, pte.pte, pte.pte >> 32); |
4eed80cd JF |
573 | } |
574 | ||
4eed80cd JF |
575 | static inline void pte_clear(struct mm_struct *mm, unsigned long addr, |
576 | pte_t *ptep) | |
577 | { | |
5c83511b | 578 | PVOP_VCALL3(mmu.pte_clear, mm, addr, ptep); |
4eed80cd | 579 | } |
60b3f626 JF |
580 | |
581 | static inline void pmd_clear(pmd_t *pmdp) | |
582 | { | |
5c83511b | 583 | PVOP_VCALL1(mmu.pmd_clear, pmdp); |
60b3f626 | 584 | } |
4eed80cd JF |
585 | #else /* !CONFIG_X86_PAE */ |
586 | static inline void set_pte_atomic(pte_t *ptep, pte_t pte) | |
587 | { | |
588 | set_pte(ptep, pte); | |
589 | } | |
590 | ||
4eed80cd JF |
591 | static inline void pte_clear(struct mm_struct *mm, unsigned long addr, |
592 | pte_t *ptep) | |
593 | { | |
594 | set_pte_at(mm, addr, ptep, __pte(0)); | |
595 | } | |
60b3f626 JF |
596 | |
597 | static inline void pmd_clear(pmd_t *pmdp) | |
598 | { | |
599 | set_pmd(pmdp, __pmd(0)); | |
600 | } | |
4eed80cd JF |
601 | #endif /* CONFIG_X86_PAE */ |
602 | ||
7fd7d83d | 603 | #define __HAVE_ARCH_START_CONTEXT_SWITCH |
224101ed | 604 | static inline void arch_start_context_switch(struct task_struct *prev) |
f8822f42 | 605 | { |
5c83511b | 606 | PVOP_VCALL1(cpu.start_context_switch, prev); |
f8822f42 JF |
607 | } |
608 | ||
224101ed | 609 | static inline void arch_end_context_switch(struct task_struct *next) |
f8822f42 | 610 | { |
5c83511b | 611 | PVOP_VCALL1(cpu.end_context_switch, next); |
f8822f42 JF |
612 | } |
613 | ||
9226d125 | 614 | #define __HAVE_ARCH_ENTER_LAZY_MMU_MODE |
f8822f42 JF |
615 | static inline void arch_enter_lazy_mmu_mode(void) |
616 | { | |
5c83511b | 617 | PVOP_VCALL0(mmu.lazy_mode.enter); |
f8822f42 JF |
618 | } |
619 | ||
620 | static inline void arch_leave_lazy_mmu_mode(void) | |
621 | { | |
5c83511b | 622 | PVOP_VCALL0(mmu.lazy_mode.leave); |
f8822f42 JF |
623 | } |
624 | ||
511ba86e BO |
625 | static inline void arch_flush_lazy_mmu_mode(void) |
626 | { | |
5c83511b | 627 | PVOP_VCALL0(mmu.lazy_mode.flush); |
511ba86e | 628 | } |
9226d125 | 629 | |
aeaaa59c | 630 | static inline void __set_fixmap(unsigned /* enum fixed_addresses */ idx, |
3b3809ac | 631 | phys_addr_t phys, pgprot_t flags) |
aeaaa59c | 632 | { |
5c83511b | 633 | pv_ops.mmu.set_fixmap(idx, phys, flags); |
aeaaa59c | 634 | } |
fdc0269e | 635 | #endif |
aeaaa59c | 636 | |
b4ecc126 | 637 | #if defined(CONFIG_SMP) && defined(CONFIG_PARAVIRT_SPINLOCKS) |
4bb689ee | 638 | |
f233f7f1 PZI |
639 | static __always_inline void pv_queued_spin_lock_slowpath(struct qspinlock *lock, |
640 | u32 val) | |
641 | { | |
5c83511b | 642 | PVOP_VCALL2(lock.queued_spin_lock_slowpath, lock, val); |
f233f7f1 PZI |
643 | } |
644 | ||
645 | static __always_inline void pv_queued_spin_unlock(struct qspinlock *lock) | |
646 | { | |
5c83511b | 647 | PVOP_VCALLEE1(lock.queued_spin_unlock, lock); |
f233f7f1 PZI |
648 | } |
649 | ||
650 | static __always_inline void pv_wait(u8 *ptr, u8 val) | |
651 | { | |
5c83511b | 652 | PVOP_VCALL2(lock.wait, ptr, val); |
f233f7f1 PZI |
653 | } |
654 | ||
655 | static __always_inline void pv_kick(int cpu) | |
656 | { | |
5c83511b | 657 | PVOP_VCALL1(lock.kick, cpu); |
f233f7f1 PZI |
658 | } |
659 | ||
6c62985d | 660 | static __always_inline bool pv_vcpu_is_preempted(long cpu) |
3cded417 | 661 | { |
5c83511b | 662 | return PVOP_CALLEE1(bool, lock.vcpu_is_preempted, cpu); |
3cded417 PZ |
663 | } |
664 | ||
5c83511b JG |
665 | void __raw_callee_save___native_queued_spin_unlock(struct qspinlock *lock); |
666 | bool __raw_callee_save___native_vcpu_is_preempted(long cpu); | |
667 | ||
f233f7f1 | 668 | #endif /* SMP && PARAVIRT_SPINLOCKS */ |
4bb689ee | 669 | |
2e47d3e6 | 670 | #ifdef CONFIG_X86_32 |
ecb93d1c JF |
671 | #define PV_SAVE_REGS "pushl %ecx; pushl %edx;" |
672 | #define PV_RESTORE_REGS "popl %edx; popl %ecx;" | |
673 | ||
674 | /* save and restore all caller-save registers, except return value */ | |
e584f559 JF |
675 | #define PV_SAVE_ALL_CALLER_REGS "pushl %ecx;" |
676 | #define PV_RESTORE_ALL_CALLER_REGS "popl %ecx;" | |
ecb93d1c | 677 | |
2e47d3e6 GOC |
678 | #define PV_FLAGS_ARG "0" |
679 | #define PV_EXTRA_CLOBBERS | |
680 | #define PV_VEXTRA_CLOBBERS | |
681 | #else | |
ecb93d1c JF |
682 | /* save and restore all caller-save registers, except return value */ |
683 | #define PV_SAVE_ALL_CALLER_REGS \ | |
684 | "push %rcx;" \ | |
685 | "push %rdx;" \ | |
686 | "push %rsi;" \ | |
687 | "push %rdi;" \ | |
688 | "push %r8;" \ | |
689 | "push %r9;" \ | |
690 | "push %r10;" \ | |
691 | "push %r11;" | |
692 | #define PV_RESTORE_ALL_CALLER_REGS \ | |
693 | "pop %r11;" \ | |
694 | "pop %r10;" \ | |
695 | "pop %r9;" \ | |
696 | "pop %r8;" \ | |
697 | "pop %rdi;" \ | |
698 | "pop %rsi;" \ | |
699 | "pop %rdx;" \ | |
700 | "pop %rcx;" | |
701 | ||
2e47d3e6 GOC |
702 | /* We save some registers, but all of them, that's too much. We clobber all |
703 | * caller saved registers but the argument parameter */ | |
704 | #define PV_SAVE_REGS "pushq %%rdi;" | |
705 | #define PV_RESTORE_REGS "popq %%rdi;" | |
c24481e9 JF |
706 | #define PV_EXTRA_CLOBBERS EXTRA_CLOBBERS, "rcx" , "rdx", "rsi" |
707 | #define PV_VEXTRA_CLOBBERS EXTRA_CLOBBERS, "rdi", "rcx" , "rdx", "rsi" | |
2e47d3e6 GOC |
708 | #define PV_FLAGS_ARG "D" |
709 | #endif | |
710 | ||
ecb93d1c JF |
711 | /* |
712 | * Generate a thunk around a function which saves all caller-save | |
713 | * registers except for the return value. This allows C functions to | |
714 | * be called from assembler code where fewer than normal registers are | |
715 | * available. It may also help code generation around calls from C | |
716 | * code if the common case doesn't use many registers. | |
717 | * | |
718 | * When a callee is wrapped in a thunk, the caller can assume that all | |
719 | * arg regs and all scratch registers are preserved across the | |
720 | * call. The return value in rax/eax will not be saved, even for void | |
721 | * functions. | |
722 | */ | |
87b240cb | 723 | #define PV_THUNK_NAME(func) "__raw_callee_save_" #func |
ecb93d1c JF |
724 | #define PV_CALLEE_SAVE_REGS_THUNK(func) \ |
725 | extern typeof(func) __raw_callee_save_##func; \ | |
ecb93d1c JF |
726 | \ |
727 | asm(".pushsection .text;" \ | |
87b240cb JP |
728 | ".globl " PV_THUNK_NAME(func) ";" \ |
729 | ".type " PV_THUNK_NAME(func) ", @function;" \ | |
730 | PV_THUNK_NAME(func) ":" \ | |
731 | FRAME_BEGIN \ | |
ecb93d1c JF |
732 | PV_SAVE_ALL_CALLER_REGS \ |
733 | "call " #func ";" \ | |
734 | PV_RESTORE_ALL_CALLER_REGS \ | |
87b240cb | 735 | FRAME_END \ |
ecb93d1c | 736 | "ret;" \ |
083db676 | 737 | ".size " PV_THUNK_NAME(func) ", .-" PV_THUNK_NAME(func) ";" \ |
ecb93d1c JF |
738 | ".popsection") |
739 | ||
740 | /* Get a reference to a callee-save function */ | |
741 | #define PV_CALLEE_SAVE(func) \ | |
742 | ((struct paravirt_callee_save) { __raw_callee_save_##func }) | |
743 | ||
744 | /* Promise that "func" already uses the right calling convention */ | |
745 | #define __PV_IS_CALLEE_SAVE(func) \ | |
746 | ((struct paravirt_callee_save) { func }) | |
747 | ||
6da63eb2 | 748 | #ifdef CONFIG_PARAVIRT_XXL |
b5908548 | 749 | static inline notrace unsigned long arch_local_save_flags(void) |
139ec7c4 | 750 | { |
5c83511b | 751 | return PVOP_CALLEE0(unsigned long, irq.save_fl); |
139ec7c4 RR |
752 | } |
753 | ||
b5908548 | 754 | static inline notrace void arch_local_irq_restore(unsigned long f) |
139ec7c4 | 755 | { |
5c83511b | 756 | PVOP_VCALLEE1(irq.restore_fl, f); |
139ec7c4 RR |
757 | } |
758 | ||
b5908548 | 759 | static inline notrace void arch_local_irq_disable(void) |
139ec7c4 | 760 | { |
5c83511b | 761 | PVOP_VCALLEE0(irq.irq_disable); |
139ec7c4 RR |
762 | } |
763 | ||
b5908548 | 764 | static inline notrace void arch_local_irq_enable(void) |
139ec7c4 | 765 | { |
5c83511b | 766 | PVOP_VCALLEE0(irq.irq_enable); |
139ec7c4 RR |
767 | } |
768 | ||
b5908548 | 769 | static inline notrace unsigned long arch_local_irq_save(void) |
139ec7c4 RR |
770 | { |
771 | unsigned long f; | |
772 | ||
df9ee292 DH |
773 | f = arch_local_save_flags(); |
774 | arch_local_irq_disable(); | |
139ec7c4 RR |
775 | return f; |
776 | } | |
6da63eb2 | 777 | #endif |
139ec7c4 | 778 | |
74d4affd | 779 | |
294688c0 | 780 | /* Make sure as little as possible of this mess escapes. */ |
d5822035 | 781 | #undef PARAVIRT_CALL |
1a45b7aa JF |
782 | #undef __PVOP_CALL |
783 | #undef __PVOP_VCALL | |
f8822f42 JF |
784 | #undef PVOP_VCALL0 |
785 | #undef PVOP_CALL0 | |
786 | #undef PVOP_VCALL1 | |
787 | #undef PVOP_CALL1 | |
788 | #undef PVOP_VCALL2 | |
789 | #undef PVOP_CALL2 | |
790 | #undef PVOP_VCALL3 | |
791 | #undef PVOP_CALL3 | |
792 | #undef PVOP_VCALL4 | |
793 | #undef PVOP_CALL4 | |
139ec7c4 | 794 | |
6f30c1ac TG |
795 | extern void default_banner(void); |
796 | ||
d3561b7f RR |
797 | #else /* __ASSEMBLY__ */ |
798 | ||
27876f38 | 799 | #define _PVSITE(ptype, ops, word, algn) \ |
139ec7c4 RR |
800 | 771:; \ |
801 | ops; \ | |
802 | 772:; \ | |
803 | .pushsection .parainstructions,"a"; \ | |
658be9d3 GOC |
804 | .align algn; \ |
805 | word 771b; \ | |
139ec7c4 RR |
806 | .byte ptype; \ |
807 | .byte 772b-771b; \ | |
139ec7c4 RR |
808 | .popsection |
809 | ||
658be9d3 | 810 | |
9104a18d | 811 | #define COND_PUSH(set, mask, reg) \ |
ecb93d1c | 812 | .if ((~(set)) & mask); push %reg; .endif |
9104a18d | 813 | #define COND_POP(set, mask, reg) \ |
ecb93d1c | 814 | .if ((~(set)) & mask); pop %reg; .endif |
9104a18d | 815 | |
658be9d3 | 816 | #ifdef CONFIG_X86_64 |
9104a18d JF |
817 | |
818 | #define PV_SAVE_REGS(set) \ | |
819 | COND_PUSH(set, CLBR_RAX, rax); \ | |
820 | COND_PUSH(set, CLBR_RCX, rcx); \ | |
821 | COND_PUSH(set, CLBR_RDX, rdx); \ | |
822 | COND_PUSH(set, CLBR_RSI, rsi); \ | |
823 | COND_PUSH(set, CLBR_RDI, rdi); \ | |
824 | COND_PUSH(set, CLBR_R8, r8); \ | |
825 | COND_PUSH(set, CLBR_R9, r9); \ | |
826 | COND_PUSH(set, CLBR_R10, r10); \ | |
827 | COND_PUSH(set, CLBR_R11, r11) | |
828 | #define PV_RESTORE_REGS(set) \ | |
829 | COND_POP(set, CLBR_R11, r11); \ | |
830 | COND_POP(set, CLBR_R10, r10); \ | |
831 | COND_POP(set, CLBR_R9, r9); \ | |
832 | COND_POP(set, CLBR_R8, r8); \ | |
833 | COND_POP(set, CLBR_RDI, rdi); \ | |
834 | COND_POP(set, CLBR_RSI, rsi); \ | |
835 | COND_POP(set, CLBR_RDX, rdx); \ | |
836 | COND_POP(set, CLBR_RCX, rcx); \ | |
837 | COND_POP(set, CLBR_RAX, rax) | |
838 | ||
5c83511b | 839 | #define PARA_PATCH(off) ((off) / 8) |
27876f38 | 840 | #define PARA_SITE(ptype, ops) _PVSITE(ptype, ops, .quad, 8) |
491eccb7 | 841 | #define PARA_INDIRECT(addr) *addr(%rip) |
658be9d3 | 842 | #else |
9104a18d JF |
843 | #define PV_SAVE_REGS(set) \ |
844 | COND_PUSH(set, CLBR_EAX, eax); \ | |
845 | COND_PUSH(set, CLBR_EDI, edi); \ | |
846 | COND_PUSH(set, CLBR_ECX, ecx); \ | |
847 | COND_PUSH(set, CLBR_EDX, edx) | |
848 | #define PV_RESTORE_REGS(set) \ | |
849 | COND_POP(set, CLBR_EDX, edx); \ | |
850 | COND_POP(set, CLBR_ECX, ecx); \ | |
851 | COND_POP(set, CLBR_EDI, edi); \ | |
852 | COND_POP(set, CLBR_EAX, eax) | |
853 | ||
5c83511b | 854 | #define PARA_PATCH(off) ((off) / 4) |
27876f38 | 855 | #define PARA_SITE(ptype, ops) _PVSITE(ptype, ops, .long, 4) |
491eccb7 | 856 | #define PARA_INDIRECT(addr) *%cs:addr |
658be9d3 GOC |
857 | #endif |
858 | ||
9bad5658 | 859 | #ifdef CONFIG_PARAVIRT_XXL |
93b1eab3 | 860 | #define INTERRUPT_RETURN \ |
5c83511b | 861 | PARA_SITE(PARA_PATCH(PV_CPU_iret), \ |
27876f38 | 862 | ANNOTATE_RETPOLINE_SAFE; \ |
5c83511b | 863 | jmp PARA_INDIRECT(pv_ops+PV_CPU_iret);) |
d5822035 JF |
864 | |
865 | #define DISABLE_INTERRUPTS(clobbers) \ | |
5c83511b | 866 | PARA_SITE(PARA_PATCH(PV_IRQ_irq_disable), \ |
ecb93d1c | 867 | PV_SAVE_REGS(clobbers | CLBR_CALLEE_SAVE); \ |
27876f38 | 868 | ANNOTATE_RETPOLINE_SAFE; \ |
5c83511b | 869 | call PARA_INDIRECT(pv_ops+PV_IRQ_irq_disable); \ |
ecb93d1c | 870 | PV_RESTORE_REGS(clobbers | CLBR_CALLEE_SAVE);) |
d5822035 JF |
871 | |
872 | #define ENABLE_INTERRUPTS(clobbers) \ | |
5c83511b | 873 | PARA_SITE(PARA_PATCH(PV_IRQ_irq_enable), \ |
ecb93d1c | 874 | PV_SAVE_REGS(clobbers | CLBR_CALLEE_SAVE); \ |
27876f38 | 875 | ANNOTATE_RETPOLINE_SAFE; \ |
5c83511b | 876 | call PARA_INDIRECT(pv_ops+PV_IRQ_irq_enable); \ |
ecb93d1c | 877 | PV_RESTORE_REGS(clobbers | CLBR_CALLEE_SAVE);) |
6da63eb2 | 878 | #endif |
d5822035 | 879 | |
5def7a4c | 880 | #ifdef CONFIG_X86_64 |
9bad5658 | 881 | #ifdef CONFIG_PARAVIRT_XXL |
a00394f8 JF |
882 | /* |
883 | * If swapgs is used while the userspace stack is still current, | |
884 | * there's no way to call a pvop. The PV replacement *must* be | |
885 | * inlined, or the swapgs instruction must be trapped and emulated. | |
886 | */ | |
887 | #define SWAPGS_UNSAFE_STACK \ | |
5c83511b | 888 | PARA_SITE(PARA_PATCH(PV_CPU_swapgs), swapgs) |
a00394f8 | 889 | |
9104a18d JF |
890 | /* |
891 | * Note: swapgs is very special, and in practise is either going to be | |
892 | * implemented with a single "swapgs" instruction or something very | |
893 | * special. Either way, we don't need to save any registers for | |
894 | * it. | |
895 | */ | |
e801f864 | 896 | #define SWAPGS \ |
5c83511b | 897 | PARA_SITE(PARA_PATCH(PV_CPU_swapgs), \ |
27876f38 | 898 | ANNOTATE_RETPOLINE_SAFE; \ |
5c83511b | 899 | call PARA_INDIRECT(pv_ops+PV_CPU_swapgs); \ |
e801f864 | 900 | ) |
4a8c4c4e | 901 | |
2be29982 | 902 | #define USERGS_SYSRET64 \ |
5c83511b | 903 | PARA_SITE(PARA_PATCH(PV_CPU_usergs_sysret64), \ |
27876f38 | 904 | ANNOTATE_RETPOLINE_SAFE; \ |
5c83511b | 905 | jmp PARA_INDIRECT(pv_ops+PV_CPU_usergs_sysret64);) |
e17f8234 BO |
906 | |
907 | #ifdef CONFIG_DEBUG_ENTRY | |
908 | #define SAVE_FLAGS(clobbers) \ | |
5c83511b | 909 | PARA_SITE(PARA_PATCH(PV_IRQ_save_fl), \ |
e17f8234 | 910 | PV_SAVE_REGS(clobbers | CLBR_CALLEE_SAVE); \ |
27876f38 | 911 | ANNOTATE_RETPOLINE_SAFE; \ |
5c83511b | 912 | call PARA_INDIRECT(pv_ops+PV_IRQ_save_fl); \ |
e17f8234 BO |
913 | PV_RESTORE_REGS(clobbers | CLBR_CALLEE_SAVE);) |
914 | #endif | |
55aedddb PZ |
915 | #endif /* CONFIG_PARAVIRT_XXL */ |
916 | #endif /* CONFIG_X86_64 */ | |
917 | ||
918 | #ifdef CONFIG_PARAVIRT_XXL | |
919 | ||
920 | #define GET_CR2_INTO_AX \ | |
921 | PARA_SITE(PARA_PATCH(PV_MMU_read_cr2), \ | |
922 | ANNOTATE_RETPOLINE_SAFE; \ | |
923 | call PARA_INDIRECT(pv_ops+PV_MMU_read_cr2); \ | |
924 | ) | |
925 | ||
926 | #endif /* CONFIG_PARAVIRT_XXL */ | |
e17f8234 | 927 | |
139ec7c4 | 928 | |
d3561b7f | 929 | #endif /* __ASSEMBLY__ */ |
6f30c1ac TG |
930 | #else /* CONFIG_PARAVIRT */ |
931 | # define default_banner x86_init_noop | |
fdc0269e JG |
932 | #endif /* !CONFIG_PARAVIRT */ |
933 | ||
a1ea1c03 | 934 | #ifndef __ASSEMBLY__ |
fdc0269e | 935 | #ifndef CONFIG_PARAVIRT_XXL |
a1ea1c03 DH |
936 | static inline void paravirt_arch_dup_mmap(struct mm_struct *oldmm, |
937 | struct mm_struct *mm) | |
938 | { | |
939 | } | |
fdc0269e | 940 | #endif |
a1ea1c03 | 941 | |
fdc0269e | 942 | #ifndef CONFIG_PARAVIRT |
a1ea1c03 DH |
943 | static inline void paravirt_arch_exit_mmap(struct mm_struct *mm) |
944 | { | |
945 | } | |
fdc0269e | 946 | #endif |
a1ea1c03 | 947 | #endif /* __ASSEMBLY__ */ |
1965aae3 | 948 | #endif /* _ASM_X86_PARAVIRT_H */ |