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[PATCH] x86: PARAVIRT: add hooks to intercept mm creation and destruction
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / include / asm-i386 / paravirt.h
1 #ifndef __ASM_PARAVIRT_H
2 #define __ASM_PARAVIRT_H
3 /* Various instructions on x86 need to be replaced for
4 * para-virtualization: those hooks are defined here. */
5
6 #ifdef CONFIG_PARAVIRT
7 #include <linux/stringify.h>
8 #include <asm/page.h>
9
10 /* These are the most performance critical ops, so we want to be able to patch
11 * callers */
12 #define PARAVIRT_IRQ_DISABLE 0
13 #define PARAVIRT_IRQ_ENABLE 1
14 #define PARAVIRT_RESTORE_FLAGS 2
15 #define PARAVIRT_SAVE_FLAGS 3
16 #define PARAVIRT_SAVE_FLAGS_IRQ_DISABLE 4
17 #define PARAVIRT_INTERRUPT_RETURN 5
18 #define PARAVIRT_STI_SYSEXIT 6
19
20 /* Bitmask of what can be clobbered: usually at least eax. */
21 #define CLBR_NONE 0x0
22 #define CLBR_EAX 0x1
23 #define CLBR_ECX 0x2
24 #define CLBR_EDX 0x4
25 #define CLBR_ANY 0x7
26
27 #ifndef __ASSEMBLY__
28 #include <linux/types.h>
29
30 struct thread_struct;
31 struct Xgt_desc_struct;
32 struct tss_struct;
33 struct mm_struct;
34 struct desc_struct;
35 struct paravirt_ops
36 {
37 unsigned int kernel_rpl;
38 int shared_kernel_pmd;
39 int paravirt_enabled;
40 const char *name;
41
42 /*
43 * Patch may replace one of the defined code sequences with arbitrary
44 * code, subject to the same register constraints. This generally
45 * means the code is not free to clobber any registers other than EAX.
46 * The patch function should return the number of bytes of code
47 * generated, as we nop pad the rest in generic code.
48 */
49 unsigned (*patch)(u8 type, u16 clobber, void *firstinsn, unsigned len);
50
51 void (*arch_setup)(void);
52 char *(*memory_setup)(void);
53 void (*init_IRQ)(void);
54
55 void (*pagetable_setup_start)(pgd_t *pgd_base);
56 void (*pagetable_setup_done)(pgd_t *pgd_base);
57
58 void (*banner)(void);
59
60 unsigned long (*get_wallclock)(void);
61 int (*set_wallclock)(unsigned long);
62 void (*time_init)(void);
63
64 void (*cpuid)(unsigned int *eax, unsigned int *ebx,
65 unsigned int *ecx, unsigned int *edx);
66
67 unsigned long (*get_debugreg)(int regno);
68 void (*set_debugreg)(int regno, unsigned long value);
69
70 void (*clts)(void);
71
72 unsigned long (*read_cr0)(void);
73 void (*write_cr0)(unsigned long);
74
75 unsigned long (*read_cr2)(void);
76 void (*write_cr2)(unsigned long);
77
78 unsigned long (*read_cr3)(void);
79 void (*write_cr3)(unsigned long);
80
81 unsigned long (*read_cr4_safe)(void);
82 unsigned long (*read_cr4)(void);
83 void (*write_cr4)(unsigned long);
84
85 unsigned long (*save_fl)(void);
86 void (*restore_fl)(unsigned long);
87 void (*irq_disable)(void);
88 void (*irq_enable)(void);
89 void (*safe_halt)(void);
90 void (*halt)(void);
91 void (*wbinvd)(void);
92
93 /* err = 0/-EFAULT. wrmsr returns 0/-EFAULT. */
94 u64 (*read_msr)(unsigned int msr, int *err);
95 int (*write_msr)(unsigned int msr, u64 val);
96
97 u64 (*read_tsc)(void);
98 u64 (*read_pmc)(void);
99 u64 (*get_scheduled_cycles)(void);
100 unsigned long (*get_cpu_khz)(void);
101
102 void (*load_tr_desc)(void);
103 void (*load_gdt)(const struct Xgt_desc_struct *);
104 void (*load_idt)(const struct Xgt_desc_struct *);
105 void (*store_gdt)(struct Xgt_desc_struct *);
106 void (*store_idt)(struct Xgt_desc_struct *);
107 void (*set_ldt)(const void *desc, unsigned entries);
108 unsigned long (*store_tr)(void);
109 void (*load_tls)(struct thread_struct *t, unsigned int cpu);
110 void (*write_ldt_entry)(struct desc_struct *,
111 int entrynum, u32 low, u32 high);
112 void (*write_gdt_entry)(struct desc_struct *,
113 int entrynum, u32 low, u32 high);
114 void (*write_idt_entry)(struct desc_struct *,
115 int entrynum, u32 low, u32 high);
116 void (*load_esp0)(struct tss_struct *tss, struct thread_struct *t);
117
118 void (*set_iopl_mask)(unsigned mask);
119
120 void (*io_delay)(void);
121
122 void (*activate_mm)(struct mm_struct *prev,
123 struct mm_struct *next);
124 void (*dup_mmap)(struct mm_struct *oldmm,
125 struct mm_struct *mm);
126 void (*exit_mmap)(struct mm_struct *mm);
127
128 #ifdef CONFIG_X86_LOCAL_APIC
129 void (*apic_write)(unsigned long reg, unsigned long v);
130 void (*apic_write_atomic)(unsigned long reg, unsigned long v);
131 unsigned long (*apic_read)(unsigned long reg);
132 void (*setup_boot_clock)(void);
133 void (*setup_secondary_clock)(void);
134 #endif
135
136 void (*flush_tlb_user)(void);
137 void (*flush_tlb_kernel)(void);
138 void (*flush_tlb_single)(u32 addr);
139
140 void (*map_pt_hook)(int type, pte_t *va, u32 pfn);
141
142 void (*alloc_pt)(u32 pfn);
143 void (*alloc_pd)(u32 pfn);
144 void (*alloc_pd_clone)(u32 pfn, u32 clonepfn, u32 start, u32 count);
145 void (*release_pt)(u32 pfn);
146 void (*release_pd)(u32 pfn);
147
148 void (*set_pte)(pte_t *ptep, pte_t pteval);
149 void (*set_pte_at)(struct mm_struct *mm, unsigned long addr, pte_t *ptep, pte_t pteval);
150 void (*set_pmd)(pmd_t *pmdp, pmd_t pmdval);
151 void (*pte_update)(struct mm_struct *mm, unsigned long addr, pte_t *ptep);
152 void (*pte_update_defer)(struct mm_struct *mm, unsigned long addr, pte_t *ptep);
153
154 pte_t (*ptep_get_and_clear)(pte_t *ptep);
155
156 #ifdef CONFIG_X86_PAE
157 void (*set_pte_atomic)(pte_t *ptep, pte_t pteval);
158 void (*set_pte_present)(struct mm_struct *mm, unsigned long addr, pte_t *ptep, pte_t pte);
159 void (*set_pud)(pud_t *pudp, pud_t pudval);
160 void (*pte_clear)(struct mm_struct *mm, unsigned long addr, pte_t *ptep);
161 void (*pmd_clear)(pmd_t *pmdp);
162
163 unsigned long long (*pte_val)(pte_t);
164 unsigned long long (*pmd_val)(pmd_t);
165 unsigned long long (*pgd_val)(pgd_t);
166
167 pte_t (*make_pte)(unsigned long long pte);
168 pmd_t (*make_pmd)(unsigned long long pmd);
169 pgd_t (*make_pgd)(unsigned long long pgd);
170 #else
171 unsigned long (*pte_val)(pte_t);
172 unsigned long (*pgd_val)(pgd_t);
173
174 pte_t (*make_pte)(unsigned long pte);
175 pgd_t (*make_pgd)(unsigned long pgd);
176 #endif
177
178 void (*set_lazy_mode)(int mode);
179
180 /* These two are jmp to, not actually called. */
181 void (*irq_enable_sysexit)(void);
182 void (*iret)(void);
183
184 void (*startup_ipi_hook)(int phys_apicid, unsigned long start_eip, unsigned long start_esp);
185 };
186
187 /* Mark a paravirt probe function. */
188 #define paravirt_probe(fn) \
189 static asmlinkage void (*__paravirtprobe_##fn)(void) __attribute_used__ \
190 __attribute__((__section__(".paravirtprobe"))) = fn
191
192 extern struct paravirt_ops paravirt_ops;
193
194 #define paravirt_enabled() (paravirt_ops.paravirt_enabled)
195
196 static inline void load_esp0(struct tss_struct *tss,
197 struct thread_struct *thread)
198 {
199 paravirt_ops.load_esp0(tss, thread);
200 }
201
202 #define ARCH_SETUP paravirt_ops.arch_setup();
203 static inline unsigned long get_wallclock(void)
204 {
205 return paravirt_ops.get_wallclock();
206 }
207
208 static inline int set_wallclock(unsigned long nowtime)
209 {
210 return paravirt_ops.set_wallclock(nowtime);
211 }
212
213 static inline void (*choose_time_init(void))(void)
214 {
215 return paravirt_ops.time_init;
216 }
217
218 /* The paravirtualized CPUID instruction. */
219 static inline void __cpuid(unsigned int *eax, unsigned int *ebx,
220 unsigned int *ecx, unsigned int *edx)
221 {
222 paravirt_ops.cpuid(eax, ebx, ecx, edx);
223 }
224
225 /*
226 * These special macros can be used to get or set a debugging register
227 */
228 #define get_debugreg(var, reg) var = paravirt_ops.get_debugreg(reg)
229 #define set_debugreg(val, reg) paravirt_ops.set_debugreg(reg, val)
230
231 #define clts() paravirt_ops.clts()
232
233 #define read_cr0() paravirt_ops.read_cr0()
234 #define write_cr0(x) paravirt_ops.write_cr0(x)
235
236 #define read_cr2() paravirt_ops.read_cr2()
237 #define write_cr2(x) paravirt_ops.write_cr2(x)
238
239 #define read_cr3() paravirt_ops.read_cr3()
240 #define write_cr3(x) paravirt_ops.write_cr3(x)
241
242 #define read_cr4() paravirt_ops.read_cr4()
243 #define read_cr4_safe(x) paravirt_ops.read_cr4_safe()
244 #define write_cr4(x) paravirt_ops.write_cr4(x)
245
246 #define raw_ptep_get_and_clear(xp) (paravirt_ops.ptep_get_and_clear(xp))
247
248 static inline void raw_safe_halt(void)
249 {
250 paravirt_ops.safe_halt();
251 }
252
253 static inline void halt(void)
254 {
255 paravirt_ops.safe_halt();
256 }
257 #define wbinvd() paravirt_ops.wbinvd()
258
259 #define get_kernel_rpl() (paravirt_ops.kernel_rpl)
260
261 /* These should all do BUG_ON(_err), but our headers are too tangled. */
262 #define rdmsr(msr,val1,val2) do { \
263 int _err; \
264 u64 _l = paravirt_ops.read_msr(msr,&_err); \
265 val1 = (u32)_l; \
266 val2 = _l >> 32; \
267 } while(0)
268
269 #define wrmsr(msr,val1,val2) do { \
270 u64 _l = ((u64)(val2) << 32) | (val1); \
271 paravirt_ops.write_msr((msr), _l); \
272 } while(0)
273
274 #define rdmsrl(msr,val) do { \
275 int _err; \
276 val = paravirt_ops.read_msr((msr),&_err); \
277 } while(0)
278
279 #define wrmsrl(msr,val) (paravirt_ops.write_msr((msr),(val)))
280 #define wrmsr_safe(msr,a,b) ({ \
281 u64 _l = ((u64)(b) << 32) | (a); \
282 paravirt_ops.write_msr((msr),_l); \
283 })
284
285 /* rdmsr with exception handling */
286 #define rdmsr_safe(msr,a,b) ({ \
287 int _err; \
288 u64 _l = paravirt_ops.read_msr(msr,&_err); \
289 (*a) = (u32)_l; \
290 (*b) = _l >> 32; \
291 _err; })
292
293 #define rdtsc(low,high) do { \
294 u64 _l = paravirt_ops.read_tsc(); \
295 low = (u32)_l; \
296 high = _l >> 32; \
297 } while(0)
298
299 #define rdtscl(low) do { \
300 u64 _l = paravirt_ops.read_tsc(); \
301 low = (int)_l; \
302 } while(0)
303
304 #define rdtscll(val) (val = paravirt_ops.read_tsc())
305
306 #define get_scheduled_cycles(val) (val = paravirt_ops.get_scheduled_cycles())
307 #define calculate_cpu_khz() (paravirt_ops.get_cpu_khz())
308
309 #define write_tsc(val1,val2) wrmsr(0x10, val1, val2)
310
311 #define rdpmc(counter,low,high) do { \
312 u64 _l = paravirt_ops.read_pmc(); \
313 low = (u32)_l; \
314 high = _l >> 32; \
315 } while(0)
316
317 #define load_TR_desc() (paravirt_ops.load_tr_desc())
318 #define load_gdt(dtr) (paravirt_ops.load_gdt(dtr))
319 #define load_idt(dtr) (paravirt_ops.load_idt(dtr))
320 #define set_ldt(addr, entries) (paravirt_ops.set_ldt((addr), (entries)))
321 #define store_gdt(dtr) (paravirt_ops.store_gdt(dtr))
322 #define store_idt(dtr) (paravirt_ops.store_idt(dtr))
323 #define store_tr(tr) ((tr) = paravirt_ops.store_tr())
324 #define load_TLS(t,cpu) (paravirt_ops.load_tls((t),(cpu)))
325 #define write_ldt_entry(dt, entry, low, high) \
326 (paravirt_ops.write_ldt_entry((dt), (entry), (low), (high)))
327 #define write_gdt_entry(dt, entry, low, high) \
328 (paravirt_ops.write_gdt_entry((dt), (entry), (low), (high)))
329 #define write_idt_entry(dt, entry, low, high) \
330 (paravirt_ops.write_idt_entry((dt), (entry), (low), (high)))
331 #define set_iopl_mask(mask) (paravirt_ops.set_iopl_mask(mask))
332
333 #define __pte(x) paravirt_ops.make_pte(x)
334 #define __pgd(x) paravirt_ops.make_pgd(x)
335
336 #define pte_val(x) paravirt_ops.pte_val(x)
337 #define pgd_val(x) paravirt_ops.pgd_val(x)
338
339 #ifdef CONFIG_X86_PAE
340 #define __pmd(x) paravirt_ops.make_pmd(x)
341 #define pmd_val(x) paravirt_ops.pmd_val(x)
342 #endif
343
344 /* The paravirtualized I/O functions */
345 static inline void slow_down_io(void) {
346 paravirt_ops.io_delay();
347 #ifdef REALLY_SLOW_IO
348 paravirt_ops.io_delay();
349 paravirt_ops.io_delay();
350 paravirt_ops.io_delay();
351 #endif
352 }
353
354 #ifdef CONFIG_X86_LOCAL_APIC
355 /*
356 * Basic functions accessing APICs.
357 */
358 static inline void apic_write(unsigned long reg, unsigned long v)
359 {
360 paravirt_ops.apic_write(reg,v);
361 }
362
363 static inline void apic_write_atomic(unsigned long reg, unsigned long v)
364 {
365 paravirt_ops.apic_write_atomic(reg,v);
366 }
367
368 static inline unsigned long apic_read(unsigned long reg)
369 {
370 return paravirt_ops.apic_read(reg);
371 }
372
373 static inline void setup_boot_clock(void)
374 {
375 paravirt_ops.setup_boot_clock();
376 }
377
378 static inline void setup_secondary_clock(void)
379 {
380 paravirt_ops.setup_secondary_clock();
381 }
382 #endif
383
384 static inline void paravirt_pagetable_setup_start(pgd_t *base)
385 {
386 if (paravirt_ops.pagetable_setup_start)
387 (*paravirt_ops.pagetable_setup_start)(base);
388 }
389
390 static inline void paravirt_pagetable_setup_done(pgd_t *base)
391 {
392 if (paravirt_ops.pagetable_setup_done)
393 (*paravirt_ops.pagetable_setup_done)(base);
394 }
395
396 #ifdef CONFIG_SMP
397 static inline void startup_ipi_hook(int phys_apicid, unsigned long start_eip,
398 unsigned long start_esp)
399 {
400 return paravirt_ops.startup_ipi_hook(phys_apicid, start_eip, start_esp);
401 }
402 #endif
403
404 static inline void paravirt_activate_mm(struct mm_struct *prev,
405 struct mm_struct *next)
406 {
407 paravirt_ops.activate_mm(prev, next);
408 }
409
410 static inline void arch_dup_mmap(struct mm_struct *oldmm,
411 struct mm_struct *mm)
412 {
413 paravirt_ops.dup_mmap(oldmm, mm);
414 }
415
416 static inline void arch_exit_mmap(struct mm_struct *mm)
417 {
418 paravirt_ops.exit_mmap(mm);
419 }
420
421 #define __flush_tlb() paravirt_ops.flush_tlb_user()
422 #define __flush_tlb_global() paravirt_ops.flush_tlb_kernel()
423 #define __flush_tlb_single(addr) paravirt_ops.flush_tlb_single(addr)
424
425 #define paravirt_map_pt_hook(type, va, pfn) paravirt_ops.map_pt_hook(type, va, pfn)
426
427 #define paravirt_alloc_pt(pfn) paravirt_ops.alloc_pt(pfn)
428 #define paravirt_release_pt(pfn) paravirt_ops.release_pt(pfn)
429
430 #define paravirt_alloc_pd(pfn) paravirt_ops.alloc_pd(pfn)
431 #define paravirt_alloc_pd_clone(pfn, clonepfn, start, count) \
432 paravirt_ops.alloc_pd_clone(pfn, clonepfn, start, count)
433 #define paravirt_release_pd(pfn) paravirt_ops.release_pd(pfn)
434
435 static inline void set_pte(pte_t *ptep, pte_t pteval)
436 {
437 paravirt_ops.set_pte(ptep, pteval);
438 }
439
440 static inline void set_pte_at(struct mm_struct *mm, unsigned long addr,
441 pte_t *ptep, pte_t pteval)
442 {
443 paravirt_ops.set_pte_at(mm, addr, ptep, pteval);
444 }
445
446 static inline void set_pmd(pmd_t *pmdp, pmd_t pmdval)
447 {
448 paravirt_ops.set_pmd(pmdp, pmdval);
449 }
450
451 static inline void pte_update(struct mm_struct *mm, u32 addr, pte_t *ptep)
452 {
453 paravirt_ops.pte_update(mm, addr, ptep);
454 }
455
456 static inline void pte_update_defer(struct mm_struct *mm, u32 addr, pte_t *ptep)
457 {
458 paravirt_ops.pte_update_defer(mm, addr, ptep);
459 }
460
461 #ifdef CONFIG_X86_PAE
462 static inline void set_pte_atomic(pte_t *ptep, pte_t pteval)
463 {
464 paravirt_ops.set_pte_atomic(ptep, pteval);
465 }
466
467 static inline void set_pte_present(struct mm_struct *mm, unsigned long addr, pte_t *ptep, pte_t pte)
468 {
469 paravirt_ops.set_pte_present(mm, addr, ptep, pte);
470 }
471
472 static inline void set_pud(pud_t *pudp, pud_t pudval)
473 {
474 paravirt_ops.set_pud(pudp, pudval);
475 }
476
477 static inline void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
478 {
479 paravirt_ops.pte_clear(mm, addr, ptep);
480 }
481
482 static inline void pmd_clear(pmd_t *pmdp)
483 {
484 paravirt_ops.pmd_clear(pmdp);
485 }
486 #endif
487
488 /* Lazy mode for batching updates / context switch */
489 #define PARAVIRT_LAZY_NONE 0
490 #define PARAVIRT_LAZY_MMU 1
491 #define PARAVIRT_LAZY_CPU 2
492 #define PARAVIRT_LAZY_FLUSH 3
493
494 #define __HAVE_ARCH_ENTER_LAZY_CPU_MODE
495 #define arch_enter_lazy_cpu_mode() paravirt_ops.set_lazy_mode(PARAVIRT_LAZY_CPU)
496 #define arch_leave_lazy_cpu_mode() paravirt_ops.set_lazy_mode(PARAVIRT_LAZY_NONE)
497 #define arch_flush_lazy_cpu_mode() paravirt_ops.set_lazy_mode(PARAVIRT_LAZY_FLUSH)
498
499 #define __HAVE_ARCH_ENTER_LAZY_MMU_MODE
500 #define arch_enter_lazy_mmu_mode() paravirt_ops.set_lazy_mode(PARAVIRT_LAZY_MMU)
501 #define arch_leave_lazy_mmu_mode() paravirt_ops.set_lazy_mode(PARAVIRT_LAZY_NONE)
502 #define arch_flush_lazy_mmu_mode() paravirt_ops.set_lazy_mode(PARAVIRT_LAZY_FLUSH)
503
504 void _paravirt_nop(void);
505 #define paravirt_nop ((void *)_paravirt_nop)
506
507 /* These all sit in the .parainstructions section to tell us what to patch. */
508 struct paravirt_patch {
509 u8 *instr; /* original instructions */
510 u8 instrtype; /* type of this instruction */
511 u8 len; /* length of original instruction */
512 u16 clobbers; /* what registers you may clobber */
513 };
514
515 #define paravirt_alt(insn_string, typenum, clobber) \
516 "771:\n\t" insn_string "\n" "772:\n" \
517 ".pushsection .parainstructions,\"a\"\n" \
518 " .long 771b\n" \
519 " .byte " __stringify(typenum) "\n" \
520 " .byte 772b-771b\n" \
521 " .short " __stringify(clobber) "\n" \
522 ".popsection"
523
524 static inline unsigned long __raw_local_save_flags(void)
525 {
526 unsigned long f;
527
528 __asm__ __volatile__(paravirt_alt( "pushl %%ecx; pushl %%edx;"
529 "call *%1;"
530 "popl %%edx; popl %%ecx",
531 PARAVIRT_SAVE_FLAGS, CLBR_NONE)
532 : "=a"(f): "m"(paravirt_ops.save_fl)
533 : "memory", "cc");
534 return f;
535 }
536
537 static inline void raw_local_irq_restore(unsigned long f)
538 {
539 __asm__ __volatile__(paravirt_alt( "pushl %%ecx; pushl %%edx;"
540 "call *%1;"
541 "popl %%edx; popl %%ecx",
542 PARAVIRT_RESTORE_FLAGS, CLBR_EAX)
543 : "=a"(f) : "m" (paravirt_ops.restore_fl), "0"(f)
544 : "memory", "cc");
545 }
546
547 static inline void raw_local_irq_disable(void)
548 {
549 __asm__ __volatile__(paravirt_alt( "pushl %%ecx; pushl %%edx;"
550 "call *%0;"
551 "popl %%edx; popl %%ecx",
552 PARAVIRT_IRQ_DISABLE, CLBR_EAX)
553 : : "m" (paravirt_ops.irq_disable)
554 : "memory", "eax", "cc");
555 }
556
557 static inline void raw_local_irq_enable(void)
558 {
559 __asm__ __volatile__(paravirt_alt( "pushl %%ecx; pushl %%edx;"
560 "call *%0;"
561 "popl %%edx; popl %%ecx",
562 PARAVIRT_IRQ_ENABLE, CLBR_EAX)
563 : : "m" (paravirt_ops.irq_enable)
564 : "memory", "eax", "cc");
565 }
566
567 static inline unsigned long __raw_local_irq_save(void)
568 {
569 unsigned long f;
570
571 __asm__ __volatile__(paravirt_alt( "pushl %%ecx; pushl %%edx;"
572 "call *%1; pushl %%eax;"
573 "call *%2; popl %%eax;"
574 "popl %%edx; popl %%ecx",
575 PARAVIRT_SAVE_FLAGS_IRQ_DISABLE,
576 CLBR_NONE)
577 : "=a"(f)
578 : "m" (paravirt_ops.save_fl),
579 "m" (paravirt_ops.irq_disable)
580 : "memory", "cc");
581 return f;
582 }
583
584 #define CLI_STRING paravirt_alt("pushl %%ecx; pushl %%edx;" \
585 "call *paravirt_ops+%c[irq_disable];" \
586 "popl %%edx; popl %%ecx", \
587 PARAVIRT_IRQ_DISABLE, CLBR_EAX)
588
589 #define STI_STRING paravirt_alt("pushl %%ecx; pushl %%edx;" \
590 "call *paravirt_ops+%c[irq_enable];" \
591 "popl %%edx; popl %%ecx", \
592 PARAVIRT_IRQ_ENABLE, CLBR_EAX)
593 #define CLI_STI_CLOBBERS , "%eax"
594 #define CLI_STI_INPUT_ARGS \
595 , \
596 [irq_disable] "i" (offsetof(struct paravirt_ops, irq_disable)), \
597 [irq_enable] "i" (offsetof(struct paravirt_ops, irq_enable))
598
599 #else /* __ASSEMBLY__ */
600
601 #define PARA_PATCH(ptype, clobbers, ops) \
602 771:; \
603 ops; \
604 772:; \
605 .pushsection .parainstructions,"a"; \
606 .long 771b; \
607 .byte ptype; \
608 .byte 772b-771b; \
609 .short clobbers; \
610 .popsection
611
612 #define INTERRUPT_RETURN \
613 PARA_PATCH(PARAVIRT_INTERRUPT_RETURN, CLBR_ANY, \
614 jmp *%cs:paravirt_ops+PARAVIRT_iret)
615
616 #define DISABLE_INTERRUPTS(clobbers) \
617 PARA_PATCH(PARAVIRT_IRQ_DISABLE, clobbers, \
618 pushl %ecx; pushl %edx; \
619 call *paravirt_ops+PARAVIRT_irq_disable; \
620 popl %edx; popl %ecx) \
621
622 #define ENABLE_INTERRUPTS(clobbers) \
623 PARA_PATCH(PARAVIRT_IRQ_ENABLE, clobbers, \
624 pushl %ecx; pushl %edx; \
625 call *%cs:paravirt_ops+PARAVIRT_irq_enable; \
626 popl %edx; popl %ecx)
627
628 #define ENABLE_INTERRUPTS_SYSEXIT \
629 PARA_PATCH(PARAVIRT_STI_SYSEXIT, CLBR_ANY, \
630 jmp *%cs:paravirt_ops+PARAVIRT_irq_enable_sysexit)
631
632 #define GET_CR0_INTO_EAX \
633 call *paravirt_ops+PARAVIRT_read_cr0
634
635 #endif /* __ASSEMBLY__ */
636 #endif /* CONFIG_PARAVIRT */
637 #endif /* __ASM_PARAVIRT_H */
kernel source for telekom puls (alcatel/mediatek)