1
2#ifndef _ASM_X86_PARAVIRT_H
3#define _ASM_X86_PARAVIRT_H
4
5
6
7#ifdef CONFIG_PARAVIRT
8#include <asm/pgtable_types.h>
9#include <asm/asm.h>
10#include <asm/nospec-branch.h>
11
12#include <asm/paravirt_types.h>
13
14#ifndef __ASSEMBLY__
15#include <linux/bug.h>
16#include <linux/types.h>
17#include <linux/cpumask.h>
18#include <linux/static_call_types.h>
19#include <asm/frame.h>
20
21u64 dummy_steal_clock(int cpu);
22u64 dummy_sched_clock(void);
23
24DECLARE_STATIC_CALL(pv_steal_clock, dummy_steal_clock);
25DECLARE_STATIC_CALL(pv_sched_clock, dummy_sched_clock);
26
27void paravirt_set_sched_clock(u64 (*func)(void));
28
29static inline u64 paravirt_sched_clock(void)
30{
31 return static_call(pv_sched_clock)();
32}
33
34struct static_key;
35extern struct static_key paravirt_steal_enabled;
36extern struct static_key paravirt_steal_rq_enabled;
37
38__visible void __native_queued_spin_unlock(struct qspinlock *lock);
39bool pv_is_native_spin_unlock(void);
40__visible bool __native_vcpu_is_preempted(long cpu);
41bool pv_is_native_vcpu_is_preempted(void);
42
43static inline u64 paravirt_steal_clock(int cpu)
44{
45 return static_call(pv_steal_clock)(cpu);
46}
47
48#ifdef CONFIG_PARAVIRT_SPINLOCKS
49void __init paravirt_set_cap(void);
50#endif
51
52
53static inline void slow_down_io(void)
54{
55 pv_ops.cpu.io_delay();
56#ifdef REALLY_SLOW_IO
57 pv_ops.cpu.io_delay();
58 pv_ops.cpu.io_delay();
59 pv_ops.cpu.io_delay();
60#endif
61}
62
63void native_flush_tlb_local(void);
64void native_flush_tlb_global(void);
65void native_flush_tlb_one_user(unsigned long addr);
66void native_flush_tlb_multi(const struct cpumask *cpumask,
67 const struct flush_tlb_info *info);
68
69static inline void __flush_tlb_local(void)
70{
71 PVOP_VCALL0(mmu.flush_tlb_user);
72}
73
74static inline void __flush_tlb_global(void)
75{
76 PVOP_VCALL0(mmu.flush_tlb_kernel);
77}
78
79static inline void __flush_tlb_one_user(unsigned long addr)
80{
81 PVOP_VCALL1(mmu.flush_tlb_one_user, addr);
82}
83
84static inline void __flush_tlb_multi(const struct cpumask *cpumask,
85 const struct flush_tlb_info *info)
86{
87 PVOP_VCALL2(mmu.flush_tlb_multi, cpumask, info);
88}
89
90static inline void paravirt_tlb_remove_table(struct mmu_gather *tlb, void *table)
91{
92 PVOP_VCALL2(mmu.tlb_remove_table, tlb, table);
93}
94
95static inline void paravirt_arch_exit_mmap(struct mm_struct *mm)
96{
97 PVOP_VCALL1(mmu.exit_mmap, mm);
98}
99
100#ifdef CONFIG_PARAVIRT_XXL
101static inline void load_sp0(unsigned long sp0)
102{
103 PVOP_VCALL1(cpu.load_sp0, sp0);
104}
105
106
107static inline void __cpuid(unsigned int *eax, unsigned int *ebx,
108 unsigned int *ecx, unsigned int *edx)
109{
110 PVOP_VCALL4(cpu.cpuid, eax, ebx, ecx, edx);
111}
112
113
114
115
116static inline unsigned long paravirt_get_debugreg(int reg)
117{
118 return PVOP_CALL1(unsigned long, cpu.get_debugreg, reg);
119}
120#define get_debugreg(var, reg) var = paravirt_get_debugreg(reg)
121static inline void set_debugreg(unsigned long val, int reg)
122{
123 PVOP_VCALL2(cpu.set_debugreg, reg, val);
124}
125
126static inline unsigned long read_cr0(void)
127{
128 return PVOP_CALL0(unsigned long, cpu.read_cr0);
129}
130
131static inline void write_cr0(unsigned long x)
132{
133 PVOP_VCALL1(cpu.write_cr0, x);
134}
135
136static inline unsigned long read_cr2(void)
137{
138 return PVOP_ALT_CALLEE0(unsigned long, mmu.read_cr2,
139 "mov %%cr2, %%rax;",
140 ALT_NOT(X86_FEATURE_XENPV));
141}
142
143static inline void write_cr2(unsigned long x)
144{
145 PVOP_VCALL1(mmu.write_cr2, x);
146}
147
148static inline unsigned long __read_cr3(void)
149{
150 return PVOP_ALT_CALL0(unsigned long, mmu.read_cr3,
151 "mov %%cr3, %%rax;", ALT_NOT(X86_FEATURE_XENPV));
152}
153
154static inline void write_cr3(unsigned long x)
155{
156 PVOP_ALT_VCALL1(mmu.write_cr3, x,
157 "mov %%rdi, %%cr3", ALT_NOT(X86_FEATURE_XENPV));
158}
159
160static inline void __write_cr4(unsigned long x)
161{
162 PVOP_VCALL1(cpu.write_cr4, x);
163}
164
165static inline void arch_safe_halt(void)
166{
167 PVOP_VCALL0(irq.safe_halt);
168}
169
170static inline void halt(void)
171{
172 PVOP_VCALL0(irq.halt);
173}
174
175static inline void wbinvd(void)
176{
177 PVOP_ALT_VCALL0(cpu.wbinvd, "wbinvd", ALT_NOT(X86_FEATURE_XENPV));
178}
179
180static inline u64 paravirt_read_msr(unsigned msr)
181{
182 return PVOP_CALL1(u64, cpu.read_msr, msr);
183}
184
185static inline void paravirt_write_msr(unsigned msr,
186 unsigned low, unsigned high)
187{
188 PVOP_VCALL3(cpu.write_msr, msr, low, high);
189}
190
191static inline u64 paravirt_read_msr_safe(unsigned msr, int *err)
192{
193 return PVOP_CALL2(u64, cpu.read_msr_safe, msr, err);
194}
195
196static inline int paravirt_write_msr_safe(unsigned msr,
197 unsigned low, unsigned high)
198{
199 return PVOP_CALL3(int, cpu.write_msr_safe, msr, low, high);
200}
201
202#define rdmsr(msr, val1, val2) \
203do { \
204 u64 _l = paravirt_read_msr(msr); \
205 val1 = (u32)_l; \
206 val2 = _l >> 32; \
207} while (0)
208
209#define wrmsr(msr, val1, val2) \
210do { \
211 paravirt_write_msr(msr, val1, val2); \
212} while (0)
213
214#define rdmsrl(msr, val) \
215do { \
216 val = paravirt_read_msr(msr); \
217} while (0)
218
219static inline void wrmsrl(unsigned msr, u64 val)
220{
221 wrmsr(msr, (u32)val, (u32)(val>>32));
222}
223
224#define wrmsr_safe(msr, a, b) paravirt_write_msr_safe(msr, a, b)
225
226
227#define rdmsr_safe(msr, a, b) \
228({ \
229 int _err; \
230 u64 _l = paravirt_read_msr_safe(msr, &_err); \
231 (*a) = (u32)_l; \
232 (*b) = _l >> 32; \
233 _err; \
234})
235
236static inline int rdmsrl_safe(unsigned msr, unsigned long long *p)
237{
238 int err;
239
240 *p = paravirt_read_msr_safe(msr, &err);
241 return err;
242}
243
244static inline unsigned long long paravirt_read_pmc(int counter)
245{
246 return PVOP_CALL1(u64, cpu.read_pmc, counter);
247}
248
249#define rdpmc(counter, low, high) \
250do { \
251 u64 _l = paravirt_read_pmc(counter); \
252 low = (u32)_l; \
253 high = _l >> 32; \
254} while (0)
255
256#define rdpmcl(counter, val) ((val) = paravirt_read_pmc(counter))
257
258static inline void paravirt_alloc_ldt(struct desc_struct *ldt, unsigned entries)
259{
260 PVOP_VCALL2(cpu.alloc_ldt, ldt, entries);
261}
262
263static inline void paravirt_free_ldt(struct desc_struct *ldt, unsigned entries)
264{
265 PVOP_VCALL2(cpu.free_ldt, ldt, entries);
266}
267
268static inline void load_TR_desc(void)
269{
270 PVOP_VCALL0(cpu.load_tr_desc);
271}
272static inline void load_gdt(const struct desc_ptr *dtr)
273{
274 PVOP_VCALL1(cpu.load_gdt, dtr);
275}
276static inline void load_idt(const struct desc_ptr *dtr)
277{
278 PVOP_VCALL1(cpu.load_idt, dtr);
279}
280static inline void set_ldt(const void *addr, unsigned entries)
281{
282 PVOP_VCALL2(cpu.set_ldt, addr, entries);
283}
284static inline unsigned long paravirt_store_tr(void)
285{
286 return PVOP_CALL0(unsigned long, cpu.store_tr);
287}
288
289#define store_tr(tr) ((tr) = paravirt_store_tr())
290static inline void load_TLS(struct thread_struct *t, unsigned cpu)
291{
292 PVOP_VCALL2(cpu.load_tls, t, cpu);
293}
294
295static inline void load_gs_index(unsigned int gs)
296{
297 PVOP_VCALL1(cpu.load_gs_index, gs);
298}
299
300static inline void write_ldt_entry(struct desc_struct *dt, int entry,
301 const void *desc)
302{
303 PVOP_VCALL3(cpu.write_ldt_entry, dt, entry, desc);
304}
305
306static inline void write_gdt_entry(struct desc_struct *dt, int entry,
307 void *desc, int type)
308{
309 PVOP_VCALL4(cpu.write_gdt_entry, dt, entry, desc, type);
310}
311
312static inline void write_idt_entry(gate_desc *dt, int entry, const gate_desc *g)
313{
314 PVOP_VCALL3(cpu.write_idt_entry, dt, entry, g);
315}
316
317#ifdef CONFIG_X86_IOPL_IOPERM
318static inline void tss_invalidate_io_bitmap(void)
319{
320 PVOP_VCALL0(cpu.invalidate_io_bitmap);
321}
322
323static inline void tss_update_io_bitmap(void)
324{
325 PVOP_VCALL0(cpu.update_io_bitmap);
326}
327#endif
328
329static inline void paravirt_activate_mm(struct mm_struct *prev,
330 struct mm_struct *next)
331{
332 PVOP_VCALL2(mmu.activate_mm, prev, next);
333}
334
335static inline void paravirt_arch_dup_mmap(struct mm_struct *oldmm,
336 struct mm_struct *mm)
337{
338 PVOP_VCALL2(mmu.dup_mmap, oldmm, mm);
339}
340
341static inline int paravirt_pgd_alloc(struct mm_struct *mm)
342{
343 return PVOP_CALL1(int, mmu.pgd_alloc, mm);
344}
345
346static inline void paravirt_pgd_free(struct mm_struct *mm, pgd_t *pgd)
347{
348 PVOP_VCALL2(mmu.pgd_free, mm, pgd);
349}
350
351static inline void paravirt_alloc_pte(struct mm_struct *mm, unsigned long pfn)
352{
353 PVOP_VCALL2(mmu.alloc_pte, mm, pfn);
354}
355static inline void paravirt_release_pte(unsigned long pfn)
356{
357 PVOP_VCALL1(mmu.release_pte, pfn);
358}
359
360static inline void paravirt_alloc_pmd(struct mm_struct *mm, unsigned long pfn)
361{
362 PVOP_VCALL2(mmu.alloc_pmd, mm, pfn);
363}
364
365static inline void paravirt_release_pmd(unsigned long pfn)
366{
367 PVOP_VCALL1(mmu.release_pmd, pfn);
368}
369
370static inline void paravirt_alloc_pud(struct mm_struct *mm, unsigned long pfn)
371{
372 PVOP_VCALL2(mmu.alloc_pud, mm, pfn);
373}
374static inline void paravirt_release_pud(unsigned long pfn)
375{
376 PVOP_VCALL1(mmu.release_pud, pfn);
377}
378
379static inline void paravirt_alloc_p4d(struct mm_struct *mm, unsigned long pfn)
380{
381 PVOP_VCALL2(mmu.alloc_p4d, mm, pfn);
382}
383
384static inline void paravirt_release_p4d(unsigned long pfn)
385{
386 PVOP_VCALL1(mmu.release_p4d, pfn);
387}
388
389static inline pte_t __pte(pteval_t val)
390{
391 return (pte_t) { PVOP_ALT_CALLEE1(pteval_t, mmu.make_pte, val,
392 "mov %%rdi, %%rax",
393 ALT_NOT(X86_FEATURE_XENPV)) };
394}
395
396static inline pteval_t pte_val(pte_t pte)
397{
398 return PVOP_ALT_CALLEE1(pteval_t, mmu.pte_val, pte.pte,
399 "mov %%rdi, %%rax", ALT_NOT(X86_FEATURE_XENPV));
400}
401
402static inline pgd_t __pgd(pgdval_t val)
403{
404 return (pgd_t) { PVOP_ALT_CALLEE1(pgdval_t, mmu.make_pgd, val,
405 "mov %%rdi, %%rax",
406 ALT_NOT(X86_FEATURE_XENPV)) };
407}
408
409static inline pgdval_t pgd_val(pgd_t pgd)
410{
411 return PVOP_ALT_CALLEE1(pgdval_t, mmu.pgd_val, pgd.pgd,
412 "mov %%rdi, %%rax", ALT_NOT(X86_FEATURE_XENPV));
413}
414
415#define __HAVE_ARCH_PTEP_MODIFY_PROT_TRANSACTION
416static inline pte_t ptep_modify_prot_start(struct vm_area_struct *vma, unsigned long addr,
417 pte_t *ptep)
418{
419 pteval_t ret;
420
421 ret = PVOP_CALL3(pteval_t, mmu.ptep_modify_prot_start, vma, addr, ptep);
422
423 return (pte_t) { .pte = ret };
424}
425
426static inline void ptep_modify_prot_commit(struct vm_area_struct *vma, unsigned long addr,
427 pte_t *ptep, pte_t old_pte, pte_t pte)
428{
429
430 PVOP_VCALL4(mmu.ptep_modify_prot_commit, vma, addr, ptep, pte.pte);
431}
432
433static inline void set_pte(pte_t *ptep, pte_t pte)
434{
435 PVOP_VCALL2(mmu.set_pte, ptep, pte.pte);
436}
437
438static inline void set_pmd(pmd_t *pmdp, pmd_t pmd)
439{
440 PVOP_VCALL2(mmu.set_pmd, pmdp, native_pmd_val(pmd));
441}
442
443static inline pmd_t __pmd(pmdval_t val)
444{
445 return (pmd_t) { PVOP_ALT_CALLEE1(pmdval_t, mmu.make_pmd, val,
446 "mov %%rdi, %%rax",
447 ALT_NOT(X86_FEATURE_XENPV)) };
448}
449
450static inline pmdval_t pmd_val(pmd_t pmd)
451{
452 return PVOP_ALT_CALLEE1(pmdval_t, mmu.pmd_val, pmd.pmd,
453 "mov %%rdi, %%rax", ALT_NOT(X86_FEATURE_XENPV));
454}
455
456static inline void set_pud(pud_t *pudp, pud_t pud)
457{
458 PVOP_VCALL2(mmu.set_pud, pudp, native_pud_val(pud));
459}
460
461static inline pud_t __pud(pudval_t val)
462{
463 pudval_t ret;
464
465 ret = PVOP_ALT_CALLEE1(pudval_t, mmu.make_pud, val,
466 "mov %%rdi, %%rax", ALT_NOT(X86_FEATURE_XENPV));
467
468 return (pud_t) { ret };
469}
470
471static inline pudval_t pud_val(pud_t pud)
472{
473 return PVOP_ALT_CALLEE1(pudval_t, mmu.pud_val, pud.pud,
474 "mov %%rdi, %%rax", ALT_NOT(X86_FEATURE_XENPV));
475}
476
477static inline void pud_clear(pud_t *pudp)
478{
479 set_pud(pudp, native_make_pud(0));
480}
481
482static inline void set_p4d(p4d_t *p4dp, p4d_t p4d)
483{
484 p4dval_t val = native_p4d_val(p4d);
485
486 PVOP_VCALL2(mmu.set_p4d, p4dp, val);
487}
488
489#if CONFIG_PGTABLE_LEVELS >= 5
490
491static inline p4d_t __p4d(p4dval_t val)
492{
493 p4dval_t ret = PVOP_ALT_CALLEE1(p4dval_t, mmu.make_p4d, val,
494 "mov %%rdi, %%rax",
495 ALT_NOT(X86_FEATURE_XENPV));
496
497 return (p4d_t) { ret };
498}
499
500static inline p4dval_t p4d_val(p4d_t p4d)
501{
502 return PVOP_ALT_CALLEE1(p4dval_t, mmu.p4d_val, p4d.p4d,
503 "mov %%rdi, %%rax", ALT_NOT(X86_FEATURE_XENPV));
504}
505
506static inline void __set_pgd(pgd_t *pgdp, pgd_t pgd)
507{
508 PVOP_VCALL2(mmu.set_pgd, pgdp, native_pgd_val(pgd));
509}
510
511#define set_pgd(pgdp, pgdval) do { \
512 if (pgtable_l5_enabled()) \
513 __set_pgd(pgdp, pgdval); \
514 else \
515 set_p4d((p4d_t *)(pgdp), (p4d_t) { (pgdval).pgd }); \
516} while (0)
517
518#define pgd_clear(pgdp) do { \
519 if (pgtable_l5_enabled()) \
520 set_pgd(pgdp, native_make_pgd(0)); \
521} while (0)
522
523#endif
524
525static inline void p4d_clear(p4d_t *p4dp)
526{
527 set_p4d(p4dp, native_make_p4d(0));
528}
529
530static inline void set_pte_atomic(pte_t *ptep, pte_t pte)
531{
532 set_pte(ptep, pte);
533}
534
535static inline void pte_clear(struct mm_struct *mm, unsigned long addr,
536 pte_t *ptep)
537{
538 set_pte(ptep, native_make_pte(0));
539}
540
541static inline void pmd_clear(pmd_t *pmdp)
542{
543 set_pmd(pmdp, native_make_pmd(0));
544}
545
546#define __HAVE_ARCH_START_CONTEXT_SWITCH
547static inline void arch_start_context_switch(struct task_struct *prev)
548{
549 PVOP_VCALL1(cpu.start_context_switch, prev);
550}
551
552static inline void arch_end_context_switch(struct task_struct *next)
553{
554 PVOP_VCALL1(cpu.end_context_switch, next);
555}
556
557#define __HAVE_ARCH_ENTER_LAZY_MMU_MODE
558static inline void arch_enter_lazy_mmu_mode(void)
559{
560 PVOP_VCALL0(mmu.lazy_mode.enter);
561}
562
563static inline void arch_leave_lazy_mmu_mode(void)
564{
565 PVOP_VCALL0(mmu.lazy_mode.leave);
566}
567
568static inline void arch_flush_lazy_mmu_mode(void)
569{
570 PVOP_VCALL0(mmu.lazy_mode.flush);
571}
572
573static inline void __set_fixmap(unsigned idx,
574 phys_addr_t phys, pgprot_t flags)
575{
576 pv_ops.mmu.set_fixmap(idx, phys, flags);
577}
578#endif
579
580#if defined(CONFIG_SMP) && defined(CONFIG_PARAVIRT_SPINLOCKS)
581
582static __always_inline void pv_queued_spin_lock_slowpath(struct qspinlock *lock,
583 u32 val)
584{
585 PVOP_VCALL2(lock.queued_spin_lock_slowpath, lock, val);
586}
587
588static __always_inline void pv_queued_spin_unlock(struct qspinlock *lock)
589{
590 PVOP_ALT_VCALLEE1(lock.queued_spin_unlock, lock,
591 "movb $0, (%%" _ASM_ARG1 ");",
592 ALT_NOT(X86_FEATURE_PVUNLOCK));
593}
594
595static __always_inline void pv_wait(u8 *ptr, u8 val)
596{
597 PVOP_VCALL2(lock.wait, ptr, val);
598}
599
600static __always_inline void pv_kick(int cpu)
601{
602 PVOP_VCALL1(lock.kick, cpu);
603}
604
605static __always_inline bool pv_vcpu_is_preempted(long cpu)
606{
607 return PVOP_ALT_CALLEE1(bool, lock.vcpu_is_preempted, cpu,
608 "xor %%" _ASM_AX ", %%" _ASM_AX ";",
609 ALT_NOT(X86_FEATURE_VCPUPREEMPT));
610}
611
612void __raw_callee_save___native_queued_spin_unlock(struct qspinlock *lock);
613bool __raw_callee_save___native_vcpu_is_preempted(long cpu);
614
615#endif
616
617#ifdef CONFIG_X86_32
618
619#define PV_SAVE_ALL_CALLER_REGS "pushl %ecx;"
620#define PV_RESTORE_ALL_CALLER_REGS "popl %ecx;"
621#else
622
623#define PV_SAVE_ALL_CALLER_REGS \
624 "push %rcx;" \
625 "push %rdx;" \
626 "push %rsi;" \
627 "push %rdi;" \
628 "push %r8;" \
629 "push %r9;" \
630 "push %r10;" \
631 "push %r11;"
632#define PV_RESTORE_ALL_CALLER_REGS \
633 "pop %r11;" \
634 "pop %r10;" \
635 "pop %r9;" \
636 "pop %r8;" \
637 "pop %rdi;" \
638 "pop %rsi;" \
639 "pop %rdx;" \
640 "pop %rcx;"
641#endif
642
643
644
645
646
647
648
649
650
651
652
653
654
655#define PV_THUNK_NAME(func) "__raw_callee_save_" #func
656#define PV_CALLEE_SAVE_REGS_THUNK(func) \
657 extern typeof(func) __raw_callee_save_##func; \
658 \
659 asm(".pushsection .text;" \
660 ".globl " PV_THUNK_NAME(func) ";" \
661 ".type " PV_THUNK_NAME(func) ", @function;" \
662 PV_THUNK_NAME(func) ":" \
663 FRAME_BEGIN \
664 PV_SAVE_ALL_CALLER_REGS \
665 "call " #func ";" \
666 PV_RESTORE_ALL_CALLER_REGS \
667 FRAME_END \
668 "ret;" \
669 ".size " PV_THUNK_NAME(func) ", .-" PV_THUNK_NAME(func) ";" \
670 ".popsection")
671
672
673#define PV_CALLEE_SAVE(func) \
674 ((struct paravirt_callee_save) { __raw_callee_save_##func })
675
676
677#define __PV_IS_CALLEE_SAVE(func) \
678 ((struct paravirt_callee_save) { func })
679
680#ifdef CONFIG_PARAVIRT_XXL
681static inline notrace unsigned long arch_local_save_flags(void)
682{
683 return PVOP_ALT_CALLEE0(unsigned long, irq.save_fl, "pushf; pop %%rax;",
684 ALT_NOT(X86_FEATURE_XENPV));
685}
686
687static inline notrace void arch_local_irq_disable(void)
688{
689 PVOP_ALT_VCALLEE0(irq.irq_disable, "cli;", ALT_NOT(X86_FEATURE_XENPV));
690}
691
692static inline notrace void arch_local_irq_enable(void)
693{
694 PVOP_ALT_VCALLEE0(irq.irq_enable, "sti;", ALT_NOT(X86_FEATURE_XENPV));
695}
696
697static inline notrace unsigned long arch_local_irq_save(void)
698{
699 unsigned long f;
700
701 f = arch_local_save_flags();
702 arch_local_irq_disable();
703 return f;
704}
705#endif
706
707
708
709#undef PARAVIRT_CALL
710#undef __PVOP_CALL
711#undef __PVOP_VCALL
712#undef PVOP_VCALL0
713#undef PVOP_CALL0
714#undef PVOP_VCALL1
715#undef PVOP_CALL1
716#undef PVOP_VCALL2
717#undef PVOP_CALL2
718#undef PVOP_VCALL3
719#undef PVOP_CALL3
720#undef PVOP_VCALL4
721#undef PVOP_CALL4
722
723extern void default_banner(void);
724
725#else
726
727#define _PVSITE(ptype, ops, word, algn) \
728771:; \
729 ops; \
730772:; \
731 .pushsection .parainstructions,"a"; \
732 .align algn; \
733 word 771b; \
734 .byte ptype; \
735 .byte 772b-771b; \
736 .popsection
737
738
739#ifdef CONFIG_X86_64
740#ifdef CONFIG_PARAVIRT_XXL
741
742#define PARA_PATCH(off) ((off) / 8)
743#define PARA_SITE(ptype, ops) _PVSITE(ptype, ops, .quad, 8)
744#define PARA_INDIRECT(addr) *addr(%rip)
745
746#define INTERRUPT_RETURN \
747 ANNOTATE_RETPOLINE_SAFE; \
748 ALTERNATIVE_TERNARY("jmp *paravirt_iret(%rip);", \
749 X86_FEATURE_XENPV, "jmp xen_iret;", "jmp native_iret;")
750
751#ifdef CONFIG_DEBUG_ENTRY
752.macro PARA_IRQ_save_fl
753 PARA_SITE(PARA_PATCH(PV_IRQ_save_fl),
754 ANNOTATE_RETPOLINE_SAFE;
755 call PARA_INDIRECT(pv_ops+PV_IRQ_save_fl);)
756.endm
757
758#define SAVE_FLAGS ALTERNATIVE "PARA_IRQ_save_fl;", "pushf; pop %rax;", \
759 ALT_NOT(X86_FEATURE_XENPV)
760#endif
761#endif
762#endif
763
764#endif
765#else
766# define default_banner x86_init_noop
767#endif
768
769#ifndef __ASSEMBLY__
770#ifndef CONFIG_PARAVIRT_XXL
771static inline void paravirt_arch_dup_mmap(struct mm_struct *oldmm,
772 struct mm_struct *mm)
773{
774}
775#endif
776
777#ifndef CONFIG_PARAVIRT
778static inline void paravirt_arch_exit_mmap(struct mm_struct *mm)
779{
780}
781#endif
782
783#ifndef CONFIG_PARAVIRT_SPINLOCKS
784static inline void paravirt_set_cap(void)
785{
786}
787#endif
788#endif
789#endif
790