paravirt.h (27876f3882fdd4acb3d3614a0133ecdc777fc292) paravirt.h (5c83511bdb9832c86be20fb86b783356e2f58062)
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _ASM_X86_PARAVIRT_H
3#define _ASM_X86_PARAVIRT_H
4/* Various instructions on x86 need to be replaced for
5 * para-virtualization: those hooks are defined here. */
6
7#ifdef CONFIG_PARAVIRT
8#include <asm/pgtable_types.h>

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14#ifndef __ASSEMBLY__
15#include <linux/bug.h>
16#include <linux/types.h>
17#include <linux/cpumask.h>
18#include <asm/frame.h>
19
20static inline void load_sp0(unsigned long sp0)
21{
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _ASM_X86_PARAVIRT_H
3#define _ASM_X86_PARAVIRT_H
4/* Various instructions on x86 need to be replaced for
5 * para-virtualization: those hooks are defined here. */
6
7#ifdef CONFIG_PARAVIRT
8#include <asm/pgtable_types.h>

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14#ifndef __ASSEMBLY__
15#include <linux/bug.h>
16#include <linux/types.h>
17#include <linux/cpumask.h>
18#include <asm/frame.h>
19
20static inline void load_sp0(unsigned long sp0)
21{
22 PVOP_VCALL1(pv_cpu_ops.load_sp0, sp0);
22 PVOP_VCALL1(cpu.load_sp0, sp0);
23}
24
25/* The paravirtualized CPUID instruction. */
26static inline void __cpuid(unsigned int *eax, unsigned int *ebx,
27 unsigned int *ecx, unsigned int *edx)
28{
23}
24
25/* The paravirtualized CPUID instruction. */
26static inline void __cpuid(unsigned int *eax, unsigned int *ebx,
27 unsigned int *ecx, unsigned int *edx)
28{
29 PVOP_VCALL4(pv_cpu_ops.cpuid, eax, ebx, ecx, edx);
29 PVOP_VCALL4(cpu.cpuid, eax, ebx, ecx, edx);
30}
31
32/*
33 * These special macros can be used to get or set a debugging register
34 */
35static inline unsigned long paravirt_get_debugreg(int reg)
36{
30}
31
32/*
33 * These special macros can be used to get or set a debugging register
34 */
35static inline unsigned long paravirt_get_debugreg(int reg)
36{
37 return PVOP_CALL1(unsigned long, pv_cpu_ops.get_debugreg, reg);
37 return PVOP_CALL1(unsigned long, cpu.get_debugreg, reg);
38}
39#define get_debugreg(var, reg) var = paravirt_get_debugreg(reg)
40static inline void set_debugreg(unsigned long val, int reg)
41{
38}
39#define get_debugreg(var, reg) var = paravirt_get_debugreg(reg)
40static inline void set_debugreg(unsigned long val, int reg)
41{
42 PVOP_VCALL2(pv_cpu_ops.set_debugreg, reg, val);
42 PVOP_VCALL2(cpu.set_debugreg, reg, val);
43}
44
45static inline unsigned long read_cr0(void)
46{
43}
44
45static inline unsigned long read_cr0(void)
46{
47 return PVOP_CALL0(unsigned long, pv_cpu_ops.read_cr0);
47 return PVOP_CALL0(unsigned long, cpu.read_cr0);
48}
49
50static inline void write_cr0(unsigned long x)
51{
48}
49
50static inline void write_cr0(unsigned long x)
51{
52 PVOP_VCALL1(pv_cpu_ops.write_cr0, x);
52 PVOP_VCALL1(cpu.write_cr0, x);
53}
54
55static inline unsigned long read_cr2(void)
56{
53}
54
55static inline unsigned long read_cr2(void)
56{
57 return PVOP_CALL0(unsigned long, pv_mmu_ops.read_cr2);
57 return PVOP_CALL0(unsigned long, mmu.read_cr2);
58}
59
60static inline void write_cr2(unsigned long x)
61{
58}
59
60static inline void write_cr2(unsigned long x)
61{
62 PVOP_VCALL1(pv_mmu_ops.write_cr2, x);
62 PVOP_VCALL1(mmu.write_cr2, x);
63}
64
65static inline unsigned long __read_cr3(void)
66{
63}
64
65static inline unsigned long __read_cr3(void)
66{
67 return PVOP_CALL0(unsigned long, pv_mmu_ops.read_cr3);
67 return PVOP_CALL0(unsigned long, mmu.read_cr3);
68}
69
70static inline void write_cr3(unsigned long x)
71{
68}
69
70static inline void write_cr3(unsigned long x)
71{
72 PVOP_VCALL1(pv_mmu_ops.write_cr3, x);
72 PVOP_VCALL1(mmu.write_cr3, x);
73}
74
75static inline void __write_cr4(unsigned long x)
76{
73}
74
75static inline void __write_cr4(unsigned long x)
76{
77 PVOP_VCALL1(pv_cpu_ops.write_cr4, x);
77 PVOP_VCALL1(cpu.write_cr4, x);
78}
79
80#ifdef CONFIG_X86_64
81static inline unsigned long read_cr8(void)
82{
78}
79
80#ifdef CONFIG_X86_64
81static inline unsigned long read_cr8(void)
82{
83 return PVOP_CALL0(unsigned long, pv_cpu_ops.read_cr8);
83 return PVOP_CALL0(unsigned long, cpu.read_cr8);
84}
85
86static inline void write_cr8(unsigned long x)
87{
84}
85
86static inline void write_cr8(unsigned long x)
87{
88 PVOP_VCALL1(pv_cpu_ops.write_cr8, x);
88 PVOP_VCALL1(cpu.write_cr8, x);
89}
90#endif
91
92static inline void arch_safe_halt(void)
93{
89}
90#endif
91
92static inline void arch_safe_halt(void)
93{
94 PVOP_VCALL0(pv_irq_ops.safe_halt);
94 PVOP_VCALL0(irq.safe_halt);
95}
96
97static inline void halt(void)
98{
95}
96
97static inline void halt(void)
98{
99 PVOP_VCALL0(pv_irq_ops.halt);
99 PVOP_VCALL0(irq.halt);
100}
101
102static inline void wbinvd(void)
103{
100}
101
102static inline void wbinvd(void)
103{
104 PVOP_VCALL0(pv_cpu_ops.wbinvd);
104 PVOP_VCALL0(cpu.wbinvd);
105}
106
107#define get_kernel_rpl() (pv_info.kernel_rpl)
108
109static inline u64 paravirt_read_msr(unsigned msr)
110{
105}
106
107#define get_kernel_rpl() (pv_info.kernel_rpl)
108
109static inline u64 paravirt_read_msr(unsigned msr)
110{
111 return PVOP_CALL1(u64, pv_cpu_ops.read_msr, msr);
111 return PVOP_CALL1(u64, cpu.read_msr, msr);
112}
113
114static inline void paravirt_write_msr(unsigned msr,
115 unsigned low, unsigned high)
116{
112}
113
114static inline void paravirt_write_msr(unsigned msr,
115 unsigned low, unsigned high)
116{
117 PVOP_VCALL3(pv_cpu_ops.write_msr, msr, low, high);
117 PVOP_VCALL3(cpu.write_msr, msr, low, high);
118}
119
120static inline u64 paravirt_read_msr_safe(unsigned msr, int *err)
121{
118}
119
120static inline u64 paravirt_read_msr_safe(unsigned msr, int *err)
121{
122 return PVOP_CALL2(u64, pv_cpu_ops.read_msr_safe, msr, err);
122 return PVOP_CALL2(u64, cpu.read_msr_safe, msr, err);
123}
124
125static inline int paravirt_write_msr_safe(unsigned msr,
126 unsigned low, unsigned high)
127{
123}
124
125static inline int paravirt_write_msr_safe(unsigned msr,
126 unsigned low, unsigned high)
127{
128 return PVOP_CALL3(int, pv_cpu_ops.write_msr_safe, msr, low, high);
128 return PVOP_CALL3(int, cpu.write_msr_safe, msr, low, high);
129}
130
131#define rdmsr(msr, val1, val2) \
132do { \
133 u64 _l = paravirt_read_msr(msr); \
134 val1 = (u32)_l; \
135 val2 = _l >> 32; \
136} while (0)

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167 int err;
168
169 *p = paravirt_read_msr_safe(msr, &err);
170 return err;
171}
172
173static inline unsigned long long paravirt_sched_clock(void)
174{
129}
130
131#define rdmsr(msr, val1, val2) \
132do { \
133 u64 _l = paravirt_read_msr(msr); \
134 val1 = (u32)_l; \
135 val2 = _l >> 32; \
136} while (0)

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167 int err;
168
169 *p = paravirt_read_msr_safe(msr, &err);
170 return err;
171}
172
173static inline unsigned long long paravirt_sched_clock(void)
174{
175 return PVOP_CALL0(unsigned long long, pv_time_ops.sched_clock);
175 return PVOP_CALL0(unsigned long long, time.sched_clock);
176}
177
178struct static_key;
179extern struct static_key paravirt_steal_enabled;
180extern struct static_key paravirt_steal_rq_enabled;
181
182static inline u64 paravirt_steal_clock(int cpu)
183{
176}
177
178struct static_key;
179extern struct static_key paravirt_steal_enabled;
180extern struct static_key paravirt_steal_rq_enabled;
181
182static inline u64 paravirt_steal_clock(int cpu)
183{
184 return PVOP_CALL1(u64, pv_time_ops.steal_clock, cpu);
184 return PVOP_CALL1(u64, time.steal_clock, cpu);
185}
186
187static inline unsigned long long paravirt_read_pmc(int counter)
188{
185}
186
187static inline unsigned long long paravirt_read_pmc(int counter)
188{
189 return PVOP_CALL1(u64, pv_cpu_ops.read_pmc, counter);
189 return PVOP_CALL1(u64, cpu.read_pmc, counter);
190}
191
192#define rdpmc(counter, low, high) \
193do { \
194 u64 _l = paravirt_read_pmc(counter); \
195 low = (u32)_l; \
196 high = _l >> 32; \
197} while (0)
198
199#define rdpmcl(counter, val) ((val) = paravirt_read_pmc(counter))
200
201static inline void paravirt_alloc_ldt(struct desc_struct *ldt, unsigned entries)
202{
190}
191
192#define rdpmc(counter, low, high) \
193do { \
194 u64 _l = paravirt_read_pmc(counter); \
195 low = (u32)_l; \
196 high = _l >> 32; \
197} while (0)
198
199#define rdpmcl(counter, val) ((val) = paravirt_read_pmc(counter))
200
201static inline void paravirt_alloc_ldt(struct desc_struct *ldt, unsigned entries)
202{
203 PVOP_VCALL2(pv_cpu_ops.alloc_ldt, ldt, entries);
203 PVOP_VCALL2(cpu.alloc_ldt, ldt, entries);
204}
205
206static inline void paravirt_free_ldt(struct desc_struct *ldt, unsigned entries)
207{
204}
205
206static inline void paravirt_free_ldt(struct desc_struct *ldt, unsigned entries)
207{
208 PVOP_VCALL2(pv_cpu_ops.free_ldt, ldt, entries);
208 PVOP_VCALL2(cpu.free_ldt, ldt, entries);
209}
210
211static inline void load_TR_desc(void)
212{
209}
210
211static inline void load_TR_desc(void)
212{
213 PVOP_VCALL0(pv_cpu_ops.load_tr_desc);
213 PVOP_VCALL0(cpu.load_tr_desc);
214}
215static inline void load_gdt(const struct desc_ptr *dtr)
216{
214}
215static inline void load_gdt(const struct desc_ptr *dtr)
216{
217 PVOP_VCALL1(pv_cpu_ops.load_gdt, dtr);
217 PVOP_VCALL1(cpu.load_gdt, dtr);
218}
219static inline void load_idt(const struct desc_ptr *dtr)
220{
218}
219static inline void load_idt(const struct desc_ptr *dtr)
220{
221 PVOP_VCALL1(pv_cpu_ops.load_idt, dtr);
221 PVOP_VCALL1(cpu.load_idt, dtr);
222}
223static inline void set_ldt(const void *addr, unsigned entries)
224{
222}
223static inline void set_ldt(const void *addr, unsigned entries)
224{
225 PVOP_VCALL2(pv_cpu_ops.set_ldt, addr, entries);
225 PVOP_VCALL2(cpu.set_ldt, addr, entries);
226}
227static inline unsigned long paravirt_store_tr(void)
228{
226}
227static inline unsigned long paravirt_store_tr(void)
228{
229 return PVOP_CALL0(unsigned long, pv_cpu_ops.store_tr);
229 return PVOP_CALL0(unsigned long, cpu.store_tr);
230}
231#define store_tr(tr) ((tr) = paravirt_store_tr())
232static inline void load_TLS(struct thread_struct *t, unsigned cpu)
233{
230}
231#define store_tr(tr) ((tr) = paravirt_store_tr())
232static inline void load_TLS(struct thread_struct *t, unsigned cpu)
233{
234 PVOP_VCALL2(pv_cpu_ops.load_tls, t, cpu);
234 PVOP_VCALL2(cpu.load_tls, t, cpu);
235}
236
237#ifdef CONFIG_X86_64
238static inline void load_gs_index(unsigned int gs)
239{
235}
236
237#ifdef CONFIG_X86_64
238static inline void load_gs_index(unsigned int gs)
239{
240 PVOP_VCALL1(pv_cpu_ops.load_gs_index, gs);
240 PVOP_VCALL1(cpu.load_gs_index, gs);
241}
242#endif
243
244static inline void write_ldt_entry(struct desc_struct *dt, int entry,
245 const void *desc)
246{
241}
242#endif
243
244static inline void write_ldt_entry(struct desc_struct *dt, int entry,
245 const void *desc)
246{
247 PVOP_VCALL3(pv_cpu_ops.write_ldt_entry, dt, entry, desc);
247 PVOP_VCALL3(cpu.write_ldt_entry, dt, entry, desc);
248}
249
250static inline void write_gdt_entry(struct desc_struct *dt, int entry,
251 void *desc, int type)
252{
248}
249
250static inline void write_gdt_entry(struct desc_struct *dt, int entry,
251 void *desc, int type)
252{
253 PVOP_VCALL4(pv_cpu_ops.write_gdt_entry, dt, entry, desc, type);
253 PVOP_VCALL4(cpu.write_gdt_entry, dt, entry, desc, type);
254}
255
256static inline void write_idt_entry(gate_desc *dt, int entry, const gate_desc *g)
257{
254}
255
256static inline void write_idt_entry(gate_desc *dt, int entry, const gate_desc *g)
257{
258 PVOP_VCALL3(pv_cpu_ops.write_idt_entry, dt, entry, g);
258 PVOP_VCALL3(cpu.write_idt_entry, dt, entry, g);
259}
260static inline void set_iopl_mask(unsigned mask)
261{
259}
260static inline void set_iopl_mask(unsigned mask)
261{
262 PVOP_VCALL1(pv_cpu_ops.set_iopl_mask, mask);
262 PVOP_VCALL1(cpu.set_iopl_mask, mask);
263}
264
265/* The paravirtualized I/O functions */
266static inline void slow_down_io(void)
267{
263}
264
265/* The paravirtualized I/O functions */
266static inline void slow_down_io(void)
267{
268 pv_cpu_ops.io_delay();
268 pv_ops.cpu.io_delay();
269#ifdef REALLY_SLOW_IO
269#ifdef REALLY_SLOW_IO
270 pv_cpu_ops.io_delay();
271 pv_cpu_ops.io_delay();
272 pv_cpu_ops.io_delay();
270 pv_ops.cpu.io_delay();
271 pv_ops.cpu.io_delay();
272 pv_ops.cpu.io_delay();
273#endif
274}
275
276static inline void paravirt_activate_mm(struct mm_struct *prev,
277 struct mm_struct *next)
278{
273#endif
274}
275
276static inline void paravirt_activate_mm(struct mm_struct *prev,
277 struct mm_struct *next)
278{
279 PVOP_VCALL2(pv_mmu_ops.activate_mm, prev, next);
279 PVOP_VCALL2(mmu.activate_mm, prev, next);
280}
281
282static inline void paravirt_arch_dup_mmap(struct mm_struct *oldmm,
283 struct mm_struct *mm)
284{
280}
281
282static inline void paravirt_arch_dup_mmap(struct mm_struct *oldmm,
283 struct mm_struct *mm)
284{
285 PVOP_VCALL2(pv_mmu_ops.dup_mmap, oldmm, mm);
285 PVOP_VCALL2(mmu.dup_mmap, oldmm, mm);
286}
287
288static inline void paravirt_arch_exit_mmap(struct mm_struct *mm)
289{
286}
287
288static inline void paravirt_arch_exit_mmap(struct mm_struct *mm)
289{
290 PVOP_VCALL1(pv_mmu_ops.exit_mmap, mm);
290 PVOP_VCALL1(mmu.exit_mmap, mm);
291}
292
293static inline void __flush_tlb(void)
294{
291}
292
293static inline void __flush_tlb(void)
294{
295 PVOP_VCALL0(pv_mmu_ops.flush_tlb_user);
295 PVOP_VCALL0(mmu.flush_tlb_user);
296}
297static inline void __flush_tlb_global(void)
298{
296}
297static inline void __flush_tlb_global(void)
298{
299 PVOP_VCALL0(pv_mmu_ops.flush_tlb_kernel);
299 PVOP_VCALL0(mmu.flush_tlb_kernel);
300}
301static inline void __flush_tlb_one_user(unsigned long addr)
302{
300}
301static inline void __flush_tlb_one_user(unsigned long addr)
302{
303 PVOP_VCALL1(pv_mmu_ops.flush_tlb_one_user, addr);
303 PVOP_VCALL1(mmu.flush_tlb_one_user, addr);
304}
305
306static inline void flush_tlb_others(const struct cpumask *cpumask,
307 const struct flush_tlb_info *info)
308{
304}
305
306static inline void flush_tlb_others(const struct cpumask *cpumask,
307 const struct flush_tlb_info *info)
308{
309 PVOP_VCALL2(pv_mmu_ops.flush_tlb_others, cpumask, info);
309 PVOP_VCALL2(mmu.flush_tlb_others, cpumask, info);
310}
311
312static inline void paravirt_tlb_remove_table(struct mmu_gather *tlb, void *table)
313{
310}
311
312static inline void paravirt_tlb_remove_table(struct mmu_gather *tlb, void *table)
313{
314 PVOP_VCALL2(pv_mmu_ops.tlb_remove_table, tlb, table);
314 PVOP_VCALL2(mmu.tlb_remove_table, tlb, table);
315}
316
317static inline int paravirt_pgd_alloc(struct mm_struct *mm)
318{
315}
316
317static inline int paravirt_pgd_alloc(struct mm_struct *mm)
318{
319 return PVOP_CALL1(int, pv_mmu_ops.pgd_alloc, mm);
319 return PVOP_CALL1(int, mmu.pgd_alloc, mm);
320}
321
322static inline void paravirt_pgd_free(struct mm_struct *mm, pgd_t *pgd)
323{
320}
321
322static inline void paravirt_pgd_free(struct mm_struct *mm, pgd_t *pgd)
323{
324 PVOP_VCALL2(pv_mmu_ops.pgd_free, mm, pgd);
324 PVOP_VCALL2(mmu.pgd_free, mm, pgd);
325}
326
327static inline void paravirt_alloc_pte(struct mm_struct *mm, unsigned long pfn)
328{
325}
326
327static inline void paravirt_alloc_pte(struct mm_struct *mm, unsigned long pfn)
328{
329 PVOP_VCALL2(pv_mmu_ops.alloc_pte, mm, pfn);
329 PVOP_VCALL2(mmu.alloc_pte, mm, pfn);
330}
331static inline void paravirt_release_pte(unsigned long pfn)
332{
330}
331static inline void paravirt_release_pte(unsigned long pfn)
332{
333 PVOP_VCALL1(pv_mmu_ops.release_pte, pfn);
333 PVOP_VCALL1(mmu.release_pte, pfn);
334}
335
336static inline void paravirt_alloc_pmd(struct mm_struct *mm, unsigned long pfn)
337{
334}
335
336static inline void paravirt_alloc_pmd(struct mm_struct *mm, unsigned long pfn)
337{
338 PVOP_VCALL2(pv_mmu_ops.alloc_pmd, mm, pfn);
338 PVOP_VCALL2(mmu.alloc_pmd, mm, pfn);
339}
340
341static inline void paravirt_release_pmd(unsigned long pfn)
342{
339}
340
341static inline void paravirt_release_pmd(unsigned long pfn)
342{
343 PVOP_VCALL1(pv_mmu_ops.release_pmd, pfn);
343 PVOP_VCALL1(mmu.release_pmd, pfn);
344}
345
346static inline void paravirt_alloc_pud(struct mm_struct *mm, unsigned long pfn)
347{
344}
345
346static inline void paravirt_alloc_pud(struct mm_struct *mm, unsigned long pfn)
347{
348 PVOP_VCALL2(pv_mmu_ops.alloc_pud, mm, pfn);
348 PVOP_VCALL2(mmu.alloc_pud, mm, pfn);
349}
350static inline void paravirt_release_pud(unsigned long pfn)
351{
349}
350static inline void paravirt_release_pud(unsigned long pfn)
351{
352 PVOP_VCALL1(pv_mmu_ops.release_pud, pfn);
352 PVOP_VCALL1(mmu.release_pud, pfn);
353}
354
355static inline void paravirt_alloc_p4d(struct mm_struct *mm, unsigned long pfn)
356{
353}
354
355static inline void paravirt_alloc_p4d(struct mm_struct *mm, unsigned long pfn)
356{
357 PVOP_VCALL2(pv_mmu_ops.alloc_p4d, mm, pfn);
357 PVOP_VCALL2(mmu.alloc_p4d, mm, pfn);
358}
359
360static inline void paravirt_release_p4d(unsigned long pfn)
361{
358}
359
360static inline void paravirt_release_p4d(unsigned long pfn)
361{
362 PVOP_VCALL1(pv_mmu_ops.release_p4d, pfn);
362 PVOP_VCALL1(mmu.release_p4d, pfn);
363}
364
365static inline pte_t __pte(pteval_t val)
366{
367 pteval_t ret;
368
369 if (sizeof(pteval_t) > sizeof(long))
363}
364
365static inline pte_t __pte(pteval_t val)
366{
367 pteval_t ret;
368
369 if (sizeof(pteval_t) > sizeof(long))
370 ret = PVOP_CALLEE2(pteval_t,
371 pv_mmu_ops.make_pte,
372 val, (u64)val >> 32);
370 ret = PVOP_CALLEE2(pteval_t, mmu.make_pte, val, (u64)val >> 32);
373 else
371 else
374 ret = PVOP_CALLEE1(pteval_t,
375 pv_mmu_ops.make_pte,
376 val);
372 ret = PVOP_CALLEE1(pteval_t, mmu.make_pte, val);
377
378 return (pte_t) { .pte = ret };
379}
380
381static inline pteval_t pte_val(pte_t pte)
382{
383 pteval_t ret;
384
385 if (sizeof(pteval_t) > sizeof(long))
373
374 return (pte_t) { .pte = ret };
375}
376
377static inline pteval_t pte_val(pte_t pte)
378{
379 pteval_t ret;
380
381 if (sizeof(pteval_t) > sizeof(long))
386 ret = PVOP_CALLEE2(pteval_t, pv_mmu_ops.pte_val,
382 ret = PVOP_CALLEE2(pteval_t, mmu.pte_val,
387 pte.pte, (u64)pte.pte >> 32);
388 else
383 pte.pte, (u64)pte.pte >> 32);
384 else
389 ret = PVOP_CALLEE1(pteval_t, pv_mmu_ops.pte_val,
390 pte.pte);
385 ret = PVOP_CALLEE1(pteval_t, mmu.pte_val, pte.pte);
391
392 return ret;
393}
394
395static inline pgd_t __pgd(pgdval_t val)
396{
397 pgdval_t ret;
398
399 if (sizeof(pgdval_t) > sizeof(long))
386
387 return ret;
388}
389
390static inline pgd_t __pgd(pgdval_t val)
391{
392 pgdval_t ret;
393
394 if (sizeof(pgdval_t) > sizeof(long))
400 ret = PVOP_CALLEE2(pgdval_t, pv_mmu_ops.make_pgd,
401 val, (u64)val >> 32);
395 ret = PVOP_CALLEE2(pgdval_t, mmu.make_pgd, val, (u64)val >> 32);
402 else
396 else
403 ret = PVOP_CALLEE1(pgdval_t, pv_mmu_ops.make_pgd,
404 val);
397 ret = PVOP_CALLEE1(pgdval_t, mmu.make_pgd, val);
405
406 return (pgd_t) { ret };
407}
408
409static inline pgdval_t pgd_val(pgd_t pgd)
410{
411 pgdval_t ret;
412
413 if (sizeof(pgdval_t) > sizeof(long))
398
399 return (pgd_t) { ret };
400}
401
402static inline pgdval_t pgd_val(pgd_t pgd)
403{
404 pgdval_t ret;
405
406 if (sizeof(pgdval_t) > sizeof(long))
414 ret = PVOP_CALLEE2(pgdval_t, pv_mmu_ops.pgd_val,
407 ret = PVOP_CALLEE2(pgdval_t, mmu.pgd_val,
415 pgd.pgd, (u64)pgd.pgd >> 32);
416 else
408 pgd.pgd, (u64)pgd.pgd >> 32);
409 else
417 ret = PVOP_CALLEE1(pgdval_t, pv_mmu_ops.pgd_val,
418 pgd.pgd);
410 ret = PVOP_CALLEE1(pgdval_t, mmu.pgd_val, pgd.pgd);
419
420 return ret;
421}
422
423#define __HAVE_ARCH_PTEP_MODIFY_PROT_TRANSACTION
424static inline pte_t ptep_modify_prot_start(struct mm_struct *mm, unsigned long addr,
425 pte_t *ptep)
426{
427 pteval_t ret;
428
411
412 return ret;
413}
414
415#define __HAVE_ARCH_PTEP_MODIFY_PROT_TRANSACTION
416static inline pte_t ptep_modify_prot_start(struct mm_struct *mm, unsigned long addr,
417 pte_t *ptep)
418{
419 pteval_t ret;
420
429 ret = PVOP_CALL3(pteval_t, pv_mmu_ops.ptep_modify_prot_start,
430 mm, addr, ptep);
421 ret = PVOP_CALL3(pteval_t, mmu.ptep_modify_prot_start, mm, addr, ptep);
431
432 return (pte_t) { .pte = ret };
433}
434
435static inline void ptep_modify_prot_commit(struct mm_struct *mm, unsigned long addr,
436 pte_t *ptep, pte_t pte)
437{
438 if (sizeof(pteval_t) > sizeof(long))
439 /* 5 arg words */
422
423 return (pte_t) { .pte = ret };
424}
425
426static inline void ptep_modify_prot_commit(struct mm_struct *mm, unsigned long addr,
427 pte_t *ptep, pte_t pte)
428{
429 if (sizeof(pteval_t) > sizeof(long))
430 /* 5 arg words */
440 pv_mmu_ops.ptep_modify_prot_commit(mm, addr, ptep, pte);
431 pv_ops.mmu.ptep_modify_prot_commit(mm, addr, ptep, pte);
441 else
432 else
442 PVOP_VCALL4(pv_mmu_ops.ptep_modify_prot_commit,
433 PVOP_VCALL4(mmu.ptep_modify_prot_commit,
443 mm, addr, ptep, pte.pte);
444}
445
446static inline void set_pte(pte_t *ptep, pte_t pte)
447{
448 if (sizeof(pteval_t) > sizeof(long))
434 mm, addr, ptep, pte.pte);
435}
436
437static inline void set_pte(pte_t *ptep, pte_t pte)
438{
439 if (sizeof(pteval_t) > sizeof(long))
449 PVOP_VCALL3(pv_mmu_ops.set_pte, ptep,
450 pte.pte, (u64)pte.pte >> 32);
440 PVOP_VCALL3(mmu.set_pte, ptep, pte.pte, (u64)pte.pte >> 32);
451 else
441 else
452 PVOP_VCALL2(pv_mmu_ops.set_pte, ptep,
453 pte.pte);
442 PVOP_VCALL2(mmu.set_pte, ptep, pte.pte);
454}
455
456static inline void set_pte_at(struct mm_struct *mm, unsigned long addr,
457 pte_t *ptep, pte_t pte)
458{
459 if (sizeof(pteval_t) > sizeof(long))
460 /* 5 arg words */
443}
444
445static inline void set_pte_at(struct mm_struct *mm, unsigned long addr,
446 pte_t *ptep, pte_t pte)
447{
448 if (sizeof(pteval_t) > sizeof(long))
449 /* 5 arg words */
461 pv_mmu_ops.set_pte_at(mm, addr, ptep, pte);
450 pv_ops.mmu.set_pte_at(mm, addr, ptep, pte);
462 else
451 else
463 PVOP_VCALL4(pv_mmu_ops.set_pte_at, mm, addr, ptep, pte.pte);
452 PVOP_VCALL4(mmu.set_pte_at, mm, addr, ptep, pte.pte);
464}
465
466static inline void set_pmd(pmd_t *pmdp, pmd_t pmd)
467{
468 pmdval_t val = native_pmd_val(pmd);
469
470 if (sizeof(pmdval_t) > sizeof(long))
453}
454
455static inline void set_pmd(pmd_t *pmdp, pmd_t pmd)
456{
457 pmdval_t val = native_pmd_val(pmd);
458
459 if (sizeof(pmdval_t) > sizeof(long))
471 PVOP_VCALL3(pv_mmu_ops.set_pmd, pmdp, val, (u64)val >> 32);
460 PVOP_VCALL3(mmu.set_pmd, pmdp, val, (u64)val >> 32);
472 else
461 else
473 PVOP_VCALL2(pv_mmu_ops.set_pmd, pmdp, val);
462 PVOP_VCALL2(mmu.set_pmd, pmdp, val);
474}
475
476#if CONFIG_PGTABLE_LEVELS >= 3
477static inline pmd_t __pmd(pmdval_t val)
478{
479 pmdval_t ret;
480
481 if (sizeof(pmdval_t) > sizeof(long))
463}
464
465#if CONFIG_PGTABLE_LEVELS >= 3
466static inline pmd_t __pmd(pmdval_t val)
467{
468 pmdval_t ret;
469
470 if (sizeof(pmdval_t) > sizeof(long))
482 ret = PVOP_CALLEE2(pmdval_t, pv_mmu_ops.make_pmd,
483 val, (u64)val >> 32);
471 ret = PVOP_CALLEE2(pmdval_t, mmu.make_pmd, val, (u64)val >> 32);
484 else
472 else
485 ret = PVOP_CALLEE1(pmdval_t, pv_mmu_ops.make_pmd,
486 val);
473 ret = PVOP_CALLEE1(pmdval_t, mmu.make_pmd, val);
487
488 return (pmd_t) { ret };
489}
490
491static inline pmdval_t pmd_val(pmd_t pmd)
492{
493 pmdval_t ret;
494
495 if (sizeof(pmdval_t) > sizeof(long))
474
475 return (pmd_t) { ret };
476}
477
478static inline pmdval_t pmd_val(pmd_t pmd)
479{
480 pmdval_t ret;
481
482 if (sizeof(pmdval_t) > sizeof(long))
496 ret = PVOP_CALLEE2(pmdval_t, pv_mmu_ops.pmd_val,
483 ret = PVOP_CALLEE2(pmdval_t, mmu.pmd_val,
497 pmd.pmd, (u64)pmd.pmd >> 32);
498 else
484 pmd.pmd, (u64)pmd.pmd >> 32);
485 else
499 ret = PVOP_CALLEE1(pmdval_t, pv_mmu_ops.pmd_val,
500 pmd.pmd);
486 ret = PVOP_CALLEE1(pmdval_t, mmu.pmd_val, pmd.pmd);
501
502 return ret;
503}
504
505static inline void set_pud(pud_t *pudp, pud_t pud)
506{
507 pudval_t val = native_pud_val(pud);
508
509 if (sizeof(pudval_t) > sizeof(long))
487
488 return ret;
489}
490
491static inline void set_pud(pud_t *pudp, pud_t pud)
492{
493 pudval_t val = native_pud_val(pud);
494
495 if (sizeof(pudval_t) > sizeof(long))
510 PVOP_VCALL3(pv_mmu_ops.set_pud, pudp,
511 val, (u64)val >> 32);
496 PVOP_VCALL3(mmu.set_pud, pudp, val, (u64)val >> 32);
512 else
497 else
513 PVOP_VCALL2(pv_mmu_ops.set_pud, pudp,
514 val);
498 PVOP_VCALL2(mmu.set_pud, pudp, val);
515}
516#if CONFIG_PGTABLE_LEVELS >= 4
517static inline pud_t __pud(pudval_t val)
518{
519 pudval_t ret;
520
521 if (sizeof(pudval_t) > sizeof(long))
499}
500#if CONFIG_PGTABLE_LEVELS >= 4
501static inline pud_t __pud(pudval_t val)
502{
503 pudval_t ret;
504
505 if (sizeof(pudval_t) > sizeof(long))
522 ret = PVOP_CALLEE2(pudval_t, pv_mmu_ops.make_pud,
523 val, (u64)val >> 32);
506 ret = PVOP_CALLEE2(pudval_t, mmu.make_pud, val, (u64)val >> 32);
524 else
507 else
525 ret = PVOP_CALLEE1(pudval_t, pv_mmu_ops.make_pud,
526 val);
508 ret = PVOP_CALLEE1(pudval_t, mmu.make_pud, val);
527
528 return (pud_t) { ret };
529}
530
531static inline pudval_t pud_val(pud_t pud)
532{
533 pudval_t ret;
534
535 if (sizeof(pudval_t) > sizeof(long))
509
510 return (pud_t) { ret };
511}
512
513static inline pudval_t pud_val(pud_t pud)
514{
515 pudval_t ret;
516
517 if (sizeof(pudval_t) > sizeof(long))
536 ret = PVOP_CALLEE2(pudval_t, pv_mmu_ops.pud_val,
518 ret = PVOP_CALLEE2(pudval_t, mmu.pud_val,
537 pud.pud, (u64)pud.pud >> 32);
538 else
519 pud.pud, (u64)pud.pud >> 32);
520 else
539 ret = PVOP_CALLEE1(pudval_t, pv_mmu_ops.pud_val,
540 pud.pud);
521 ret = PVOP_CALLEE1(pudval_t, mmu.pud_val, pud.pud);
541
542 return ret;
543}
544
545static inline void pud_clear(pud_t *pudp)
546{
547 set_pud(pudp, __pud(0));
548}
549
550static inline void set_p4d(p4d_t *p4dp, p4d_t p4d)
551{
552 p4dval_t val = native_p4d_val(p4d);
553
554 if (sizeof(p4dval_t) > sizeof(long))
522
523 return ret;
524}
525
526static inline void pud_clear(pud_t *pudp)
527{
528 set_pud(pudp, __pud(0));
529}
530
531static inline void set_p4d(p4d_t *p4dp, p4d_t p4d)
532{
533 p4dval_t val = native_p4d_val(p4d);
534
535 if (sizeof(p4dval_t) > sizeof(long))
555 PVOP_VCALL3(pv_mmu_ops.set_p4d, p4dp,
556 val, (u64)val >> 32);
536 PVOP_VCALL3(mmu.set_p4d, p4dp, val, (u64)val >> 32);
557 else
537 else
558 PVOP_VCALL2(pv_mmu_ops.set_p4d, p4dp,
559 val);
538 PVOP_VCALL2(mmu.set_p4d, p4dp, val);
560}
561
562#if CONFIG_PGTABLE_LEVELS >= 5
563
564static inline p4d_t __p4d(p4dval_t val)
565{
539}
540
541#if CONFIG_PGTABLE_LEVELS >= 5
542
543static inline p4d_t __p4d(p4dval_t val)
544{
566 p4dval_t ret = PVOP_CALLEE1(p4dval_t, pv_mmu_ops.make_p4d, val);
545 p4dval_t ret = PVOP_CALLEE1(p4dval_t, mmu.make_p4d, val);
567
568 return (p4d_t) { ret };
569}
570
571static inline p4dval_t p4d_val(p4d_t p4d)
572{
546
547 return (p4d_t) { ret };
548}
549
550static inline p4dval_t p4d_val(p4d_t p4d)
551{
573 return PVOP_CALLEE1(p4dval_t, pv_mmu_ops.p4d_val, p4d.p4d);
552 return PVOP_CALLEE1(p4dval_t, mmu.p4d_val, p4d.p4d);
574}
575
576static inline void __set_pgd(pgd_t *pgdp, pgd_t pgd)
577{
553}
554
555static inline void __set_pgd(pgd_t *pgdp, pgd_t pgd)
556{
578 PVOP_VCALL2(pv_mmu_ops.set_pgd, pgdp, native_pgd_val(pgd));
557 PVOP_VCALL2(mmu.set_pgd, pgdp, native_pgd_val(pgd));
579}
580
581#define set_pgd(pgdp, pgdval) do { \
582 if (pgtable_l5_enabled()) \
583 __set_pgd(pgdp, pgdval); \
584 else \
585 set_p4d((p4d_t *)(pgdp), (p4d_t) { (pgdval).pgd }); \
586} while (0)

--- 14 unchanged lines hidden (view full) ---

601
602#endif /* CONFIG_PGTABLE_LEVELS >= 3 */
603
604#ifdef CONFIG_X86_PAE
605/* Special-case pte-setting operations for PAE, which can't update a
606 64-bit pte atomically */
607static inline void set_pte_atomic(pte_t *ptep, pte_t pte)
608{
558}
559
560#define set_pgd(pgdp, pgdval) do { \
561 if (pgtable_l5_enabled()) \
562 __set_pgd(pgdp, pgdval); \
563 else \
564 set_p4d((p4d_t *)(pgdp), (p4d_t) { (pgdval).pgd }); \
565} while (0)

--- 14 unchanged lines hidden (view full) ---

580
581#endif /* CONFIG_PGTABLE_LEVELS >= 3 */
582
583#ifdef CONFIG_X86_PAE
584/* Special-case pte-setting operations for PAE, which can't update a
585 64-bit pte atomically */
586static inline void set_pte_atomic(pte_t *ptep, pte_t pte)
587{
609 PVOP_VCALL3(pv_mmu_ops.set_pte_atomic, ptep,
610 pte.pte, pte.pte >> 32);
588 PVOP_VCALL3(mmu.set_pte_atomic, ptep, pte.pte, pte.pte >> 32);
611}
612
613static inline void pte_clear(struct mm_struct *mm, unsigned long addr,
614 pte_t *ptep)
615{
589}
590
591static inline void pte_clear(struct mm_struct *mm, unsigned long addr,
592 pte_t *ptep)
593{
616 PVOP_VCALL3(pv_mmu_ops.pte_clear, mm, addr, ptep);
594 PVOP_VCALL3(mmu.pte_clear, mm, addr, ptep);
617}
618
619static inline void pmd_clear(pmd_t *pmdp)
620{
595}
596
597static inline void pmd_clear(pmd_t *pmdp)
598{
621 PVOP_VCALL1(pv_mmu_ops.pmd_clear, pmdp);
599 PVOP_VCALL1(mmu.pmd_clear, pmdp);
622}
623#else /* !CONFIG_X86_PAE */
624static inline void set_pte_atomic(pte_t *ptep, pte_t pte)
625{
626 set_pte(ptep, pte);
627}
628
629static inline void pte_clear(struct mm_struct *mm, unsigned long addr,

--- 6 unchanged lines hidden (view full) ---

636{
637 set_pmd(pmdp, __pmd(0));
638}
639#endif /* CONFIG_X86_PAE */
640
641#define __HAVE_ARCH_START_CONTEXT_SWITCH
642static inline void arch_start_context_switch(struct task_struct *prev)
643{
600}
601#else /* !CONFIG_X86_PAE */
602static inline void set_pte_atomic(pte_t *ptep, pte_t pte)
603{
604 set_pte(ptep, pte);
605}
606
607static inline void pte_clear(struct mm_struct *mm, unsigned long addr,

--- 6 unchanged lines hidden (view full) ---

614{
615 set_pmd(pmdp, __pmd(0));
616}
617#endif /* CONFIG_X86_PAE */
618
619#define __HAVE_ARCH_START_CONTEXT_SWITCH
620static inline void arch_start_context_switch(struct task_struct *prev)
621{
644 PVOP_VCALL1(pv_cpu_ops.start_context_switch, prev);
622 PVOP_VCALL1(cpu.start_context_switch, prev);
645}
646
647static inline void arch_end_context_switch(struct task_struct *next)
648{
623}
624
625static inline void arch_end_context_switch(struct task_struct *next)
626{
649 PVOP_VCALL1(pv_cpu_ops.end_context_switch, next);
627 PVOP_VCALL1(cpu.end_context_switch, next);
650}
651
652#define __HAVE_ARCH_ENTER_LAZY_MMU_MODE
653static inline void arch_enter_lazy_mmu_mode(void)
654{
628}
629
630#define __HAVE_ARCH_ENTER_LAZY_MMU_MODE
631static inline void arch_enter_lazy_mmu_mode(void)
632{
655 PVOP_VCALL0(pv_mmu_ops.lazy_mode.enter);
633 PVOP_VCALL0(mmu.lazy_mode.enter);
656}
657
658static inline void arch_leave_lazy_mmu_mode(void)
659{
634}
635
636static inline void arch_leave_lazy_mmu_mode(void)
637{
660 PVOP_VCALL0(pv_mmu_ops.lazy_mode.leave);
638 PVOP_VCALL0(mmu.lazy_mode.leave);
661}
662
663static inline void arch_flush_lazy_mmu_mode(void)
664{
639}
640
641static inline void arch_flush_lazy_mmu_mode(void)
642{
665 PVOP_VCALL0(pv_mmu_ops.lazy_mode.flush);
643 PVOP_VCALL0(mmu.lazy_mode.flush);
666}
667
668static inline void __set_fixmap(unsigned /* enum fixed_addresses */ idx,
669 phys_addr_t phys, pgprot_t flags)
670{
644}
645
646static inline void __set_fixmap(unsigned /* enum fixed_addresses */ idx,
647 phys_addr_t phys, pgprot_t flags)
648{
671 pv_mmu_ops.set_fixmap(idx, phys, flags);
649 pv_ops.mmu.set_fixmap(idx, phys, flags);
672}
673
674#if defined(CONFIG_SMP) && defined(CONFIG_PARAVIRT_SPINLOCKS)
675
676static __always_inline void pv_queued_spin_lock_slowpath(struct qspinlock *lock,
677 u32 val)
678{
650}
651
652#if defined(CONFIG_SMP) && defined(CONFIG_PARAVIRT_SPINLOCKS)
653
654static __always_inline void pv_queued_spin_lock_slowpath(struct qspinlock *lock,
655 u32 val)
656{
679 PVOP_VCALL2(pv_lock_ops.queued_spin_lock_slowpath, lock, val);
657 PVOP_VCALL2(lock.queued_spin_lock_slowpath, lock, val);
680}
681
682static __always_inline void pv_queued_spin_unlock(struct qspinlock *lock)
683{
658}
659
660static __always_inline void pv_queued_spin_unlock(struct qspinlock *lock)
661{
684 PVOP_VCALLEE1(pv_lock_ops.queued_spin_unlock, lock);
662 PVOP_VCALLEE1(lock.queued_spin_unlock, lock);
685}
686
687static __always_inline void pv_wait(u8 *ptr, u8 val)
688{
663}
664
665static __always_inline void pv_wait(u8 *ptr, u8 val)
666{
689 PVOP_VCALL2(pv_lock_ops.wait, ptr, val);
667 PVOP_VCALL2(lock.wait, ptr, val);
690}
691
692static __always_inline void pv_kick(int cpu)
693{
668}
669
670static __always_inline void pv_kick(int cpu)
671{
694 PVOP_VCALL1(pv_lock_ops.kick, cpu);
672 PVOP_VCALL1(lock.kick, cpu);
695}
696
697static __always_inline bool pv_vcpu_is_preempted(long cpu)
698{
673}
674
675static __always_inline bool pv_vcpu_is_preempted(long cpu)
676{
699 return PVOP_CALLEE1(bool, pv_lock_ops.vcpu_is_preempted, cpu);
677 return PVOP_CALLEE1(bool, lock.vcpu_is_preempted, cpu);
700}
701
678}
679
680void __raw_callee_save___native_queued_spin_unlock(struct qspinlock *lock);
681bool __raw_callee_save___native_vcpu_is_preempted(long cpu);
682
702#endif /* SMP && PARAVIRT_SPINLOCKS */
703
704#ifdef CONFIG_X86_32
705#define PV_SAVE_REGS "pushl %ecx; pushl %edx;"
706#define PV_RESTORE_REGS "popl %edx; popl %ecx;"
707
708/* save and restore all caller-save registers, except return value */
709#define PV_SAVE_ALL_CALLER_REGS "pushl %ecx;"

--- 65 unchanged lines hidden (view full) ---

775 ((struct paravirt_callee_save) { __raw_callee_save_##func })
776
777/* Promise that "func" already uses the right calling convention */
778#define __PV_IS_CALLEE_SAVE(func) \
779 ((struct paravirt_callee_save) { func })
780
781static inline notrace unsigned long arch_local_save_flags(void)
782{
683#endif /* SMP && PARAVIRT_SPINLOCKS */
684
685#ifdef CONFIG_X86_32
686#define PV_SAVE_REGS "pushl %ecx; pushl %edx;"
687#define PV_RESTORE_REGS "popl %edx; popl %ecx;"
688
689/* save and restore all caller-save registers, except return value */
690#define PV_SAVE_ALL_CALLER_REGS "pushl %ecx;"

--- 65 unchanged lines hidden (view full) ---

756 ((struct paravirt_callee_save) { __raw_callee_save_##func })
757
758/* Promise that "func" already uses the right calling convention */
759#define __PV_IS_CALLEE_SAVE(func) \
760 ((struct paravirt_callee_save) { func })
761
762static inline notrace unsigned long arch_local_save_flags(void)
763{
783 return PVOP_CALLEE0(unsigned long, pv_irq_ops.save_fl);
764 return PVOP_CALLEE0(unsigned long, irq.save_fl);
784}
785
786static inline notrace void arch_local_irq_restore(unsigned long f)
787{
765}
766
767static inline notrace void arch_local_irq_restore(unsigned long f)
768{
788 PVOP_VCALLEE1(pv_irq_ops.restore_fl, f);
769 PVOP_VCALLEE1(irq.restore_fl, f);
789}
790
791static inline notrace void arch_local_irq_disable(void)
792{
770}
771
772static inline notrace void arch_local_irq_disable(void)
773{
793 PVOP_VCALLEE0(pv_irq_ops.irq_disable);
774 PVOP_VCALLEE0(irq.irq_disable);
794}
795
796static inline notrace void arch_local_irq_enable(void)
797{
775}
776
777static inline notrace void arch_local_irq_enable(void)
778{
798 PVOP_VCALLEE0(pv_irq_ops.irq_enable);
779 PVOP_VCALLEE0(irq.irq_enable);
799}
800
801static inline notrace unsigned long arch_local_irq_save(void)
802{
803 unsigned long f;
804
805 f = arch_local_save_flags();
806 arch_local_irq_disable();

--- 55 unchanged lines hidden (view full) ---

862 COND_POP(set, CLBR_R9, r9); \
863 COND_POP(set, CLBR_R8, r8); \
864 COND_POP(set, CLBR_RDI, rdi); \
865 COND_POP(set, CLBR_RSI, rsi); \
866 COND_POP(set, CLBR_RDX, rdx); \
867 COND_POP(set, CLBR_RCX, rcx); \
868 COND_POP(set, CLBR_RAX, rax)
869
780}
781
782static inline notrace unsigned long arch_local_irq_save(void)
783{
784 unsigned long f;
785
786 f = arch_local_save_flags();
787 arch_local_irq_disable();

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843 COND_POP(set, CLBR_R9, r9); \
844 COND_POP(set, CLBR_R8, r8); \
845 COND_POP(set, CLBR_RDI, rdi); \
846 COND_POP(set, CLBR_RSI, rsi); \
847 COND_POP(set, CLBR_RDX, rdx); \
848 COND_POP(set, CLBR_RCX, rcx); \
849 COND_POP(set, CLBR_RAX, rax)
850
870#define PARA_PATCH(struct, off) ((PARAVIRT_PATCH_##struct + (off)) / 8)
851#define PARA_PATCH(off) ((off) / 8)
871#define PARA_SITE(ptype, ops) _PVSITE(ptype, ops, .quad, 8)
872#define PARA_INDIRECT(addr) *addr(%rip)
873#else
874#define PV_SAVE_REGS(set) \
875 COND_PUSH(set, CLBR_EAX, eax); \
876 COND_PUSH(set, CLBR_EDI, edi); \
877 COND_PUSH(set, CLBR_ECX, ecx); \
878 COND_PUSH(set, CLBR_EDX, edx)
879#define PV_RESTORE_REGS(set) \
880 COND_POP(set, CLBR_EDX, edx); \
881 COND_POP(set, CLBR_ECX, ecx); \
882 COND_POP(set, CLBR_EDI, edi); \
883 COND_POP(set, CLBR_EAX, eax)
884
852#define PARA_SITE(ptype, ops) _PVSITE(ptype, ops, .quad, 8)
853#define PARA_INDIRECT(addr) *addr(%rip)
854#else
855#define PV_SAVE_REGS(set) \
856 COND_PUSH(set, CLBR_EAX, eax); \
857 COND_PUSH(set, CLBR_EDI, edi); \
858 COND_PUSH(set, CLBR_ECX, ecx); \
859 COND_PUSH(set, CLBR_EDX, edx)
860#define PV_RESTORE_REGS(set) \
861 COND_POP(set, CLBR_EDX, edx); \
862 COND_POP(set, CLBR_ECX, ecx); \
863 COND_POP(set, CLBR_EDI, edi); \
864 COND_POP(set, CLBR_EAX, eax)
865
885#define PARA_PATCH(struct, off) ((PARAVIRT_PATCH_##struct + (off)) / 4)
866#define PARA_PATCH(off) ((off) / 4)
886#define PARA_SITE(ptype, ops) _PVSITE(ptype, ops, .long, 4)
887#define PARA_INDIRECT(addr) *%cs:addr
888#endif
889
890#define INTERRUPT_RETURN \
867#define PARA_SITE(ptype, ops) _PVSITE(ptype, ops, .long, 4)
868#define PARA_INDIRECT(addr) *%cs:addr
869#endif
870
871#define INTERRUPT_RETURN \
891 PARA_SITE(PARA_PATCH(pv_cpu_ops, PV_CPU_iret), \
872 PARA_SITE(PARA_PATCH(PV_CPU_iret), \
892 ANNOTATE_RETPOLINE_SAFE; \
873 ANNOTATE_RETPOLINE_SAFE; \
893 jmp PARA_INDIRECT(pv_cpu_ops+PV_CPU_iret);)
874 jmp PARA_INDIRECT(pv_ops+PV_CPU_iret);)
894
895#define DISABLE_INTERRUPTS(clobbers) \
875
876#define DISABLE_INTERRUPTS(clobbers) \
896 PARA_SITE(PARA_PATCH(pv_irq_ops, PV_IRQ_irq_disable), \
877 PARA_SITE(PARA_PATCH(PV_IRQ_irq_disable), \
897 PV_SAVE_REGS(clobbers | CLBR_CALLEE_SAVE); \
898 ANNOTATE_RETPOLINE_SAFE; \
878 PV_SAVE_REGS(clobbers | CLBR_CALLEE_SAVE); \
879 ANNOTATE_RETPOLINE_SAFE; \
899 call PARA_INDIRECT(pv_irq_ops+PV_IRQ_irq_disable); \
880 call PARA_INDIRECT(pv_ops+PV_IRQ_irq_disable); \
900 PV_RESTORE_REGS(clobbers | CLBR_CALLEE_SAVE);)
901
902#define ENABLE_INTERRUPTS(clobbers) \
881 PV_RESTORE_REGS(clobbers | CLBR_CALLEE_SAVE);)
882
883#define ENABLE_INTERRUPTS(clobbers) \
903 PARA_SITE(PARA_PATCH(pv_irq_ops, PV_IRQ_irq_enable), \
884 PARA_SITE(PARA_PATCH(PV_IRQ_irq_enable), \
904 PV_SAVE_REGS(clobbers | CLBR_CALLEE_SAVE); \
905 ANNOTATE_RETPOLINE_SAFE; \
885 PV_SAVE_REGS(clobbers | CLBR_CALLEE_SAVE); \
886 ANNOTATE_RETPOLINE_SAFE; \
906 call PARA_INDIRECT(pv_irq_ops+PV_IRQ_irq_enable); \
887 call PARA_INDIRECT(pv_ops+PV_IRQ_irq_enable); \
907 PV_RESTORE_REGS(clobbers | CLBR_CALLEE_SAVE);)
908
909#ifdef CONFIG_X86_32
910#define GET_CR0_INTO_EAX \
911 push %ecx; push %edx; \
912 ANNOTATE_RETPOLINE_SAFE; \
888 PV_RESTORE_REGS(clobbers | CLBR_CALLEE_SAVE);)
889
890#ifdef CONFIG_X86_32
891#define GET_CR0_INTO_EAX \
892 push %ecx; push %edx; \
893 ANNOTATE_RETPOLINE_SAFE; \
913 call PARA_INDIRECT(pv_cpu_ops+PV_CPU_read_cr0); \
894 call PARA_INDIRECT(pv_ops+PV_CPU_read_cr0); \
914 pop %edx; pop %ecx
915#else /* !CONFIG_X86_32 */
916
917/*
918 * If swapgs is used while the userspace stack is still current,
919 * there's no way to call a pvop. The PV replacement *must* be
920 * inlined, or the swapgs instruction must be trapped and emulated.
921 */
922#define SWAPGS_UNSAFE_STACK \
895 pop %edx; pop %ecx
896#else /* !CONFIG_X86_32 */
897
898/*
899 * If swapgs is used while the userspace stack is still current,
900 * there's no way to call a pvop. The PV replacement *must* be
901 * inlined, or the swapgs instruction must be trapped and emulated.
902 */
903#define SWAPGS_UNSAFE_STACK \
923 PARA_SITE(PARA_PATCH(pv_cpu_ops, PV_CPU_swapgs), swapgs)
904 PARA_SITE(PARA_PATCH(PV_CPU_swapgs), swapgs)
924
925/*
926 * Note: swapgs is very special, and in practise is either going to be
927 * implemented with a single "swapgs" instruction or something very
928 * special. Either way, we don't need to save any registers for
929 * it.
930 */
931#define SWAPGS \
905
906/*
907 * Note: swapgs is very special, and in practise is either going to be
908 * implemented with a single "swapgs" instruction or something very
909 * special. Either way, we don't need to save any registers for
910 * it.
911 */
912#define SWAPGS \
932 PARA_SITE(PARA_PATCH(pv_cpu_ops, PV_CPU_swapgs), \
913 PARA_SITE(PARA_PATCH(PV_CPU_swapgs), \
933 ANNOTATE_RETPOLINE_SAFE; \
914 ANNOTATE_RETPOLINE_SAFE; \
934 call PARA_INDIRECT(pv_cpu_ops+PV_CPU_swapgs); \
915 call PARA_INDIRECT(pv_ops+PV_CPU_swapgs); \
935 )
936
937#define GET_CR2_INTO_RAX \
938 ANNOTATE_RETPOLINE_SAFE; \
916 )
917
918#define GET_CR2_INTO_RAX \
919 ANNOTATE_RETPOLINE_SAFE; \
939 call PARA_INDIRECT(pv_mmu_ops+PV_MMU_read_cr2);
920 call PARA_INDIRECT(pv_ops+PV_MMU_read_cr2);
940
941#define USERGS_SYSRET64 \
921
922#define USERGS_SYSRET64 \
942 PARA_SITE(PARA_PATCH(pv_cpu_ops, PV_CPU_usergs_sysret64), \
923 PARA_SITE(PARA_PATCH(PV_CPU_usergs_sysret64), \
943 ANNOTATE_RETPOLINE_SAFE; \
924 ANNOTATE_RETPOLINE_SAFE; \
944 jmp PARA_INDIRECT(pv_cpu_ops+PV_CPU_usergs_sysret64);)
925 jmp PARA_INDIRECT(pv_ops+PV_CPU_usergs_sysret64);)
945
946#ifdef CONFIG_DEBUG_ENTRY
947#define SAVE_FLAGS(clobbers) \
926
927#ifdef CONFIG_DEBUG_ENTRY
928#define SAVE_FLAGS(clobbers) \
948 PARA_SITE(PARA_PATCH(pv_irq_ops, PV_IRQ_save_fl), \
929 PARA_SITE(PARA_PATCH(PV_IRQ_save_fl), \
949 PV_SAVE_REGS(clobbers | CLBR_CALLEE_SAVE); \
950 ANNOTATE_RETPOLINE_SAFE; \
930 PV_SAVE_REGS(clobbers | CLBR_CALLEE_SAVE); \
931 ANNOTATE_RETPOLINE_SAFE; \
951 call PARA_INDIRECT(pv_irq_ops+PV_IRQ_save_fl); \
932 call PARA_INDIRECT(pv_ops+PV_IRQ_save_fl); \
952 PV_RESTORE_REGS(clobbers | CLBR_CALLEE_SAVE);)
953#endif
954
955#endif /* CONFIG_X86_32 */
956
957#endif /* __ASSEMBLY__ */
958#else /* CONFIG_PARAVIRT */
959# define default_banner x86_init_noop

--- 12 unchanged lines hidden --- 		933 PV_RESTORE_REGS(clobbers | CLBR_CALLEE_SAVE);)
934#endif
935
936#endif /* CONFIG_X86_32 */
937
938#endif /* __ASSEMBLY__ */
939#else /* CONFIG_PARAVIRT */
940# define default_banner x86_init_noop

--- 12 unchanged lines hidden ---