git.oblomov.eu Git - linux-2.6/blob - 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 #include <linux/linkage.h>
   6 #include <linux/stringify.h>
   7 #include <asm/page.h>
   8
   9 #ifdef CONFIG_PARAVIRT
  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 struct thread_struct;
  29 struct Xgt_desc_struct;
  30 struct tss_struct;
  31 struct mm_struct;
  32 struct paravirt_ops
  33 {
  34         unsigned int kernel_rpl;
  35         int paravirt_enabled;
  36         const char *name;
  37
  38         /*
  39          * Patch may replace one of the defined code sequences with arbitrary
  40          * code, subject to the same register constraints.  This generally
  41          * means the code is not free to clobber any registers other than EAX.
  42          * The patch function should return the number of bytes of code
  43          * generated, as we nop pad the rest in generic code.
  44          */
  45         unsigned (*patch)(u8 type, u16 clobber, void *firstinsn, unsigned len);
  46
  47         void (*arch_setup)(void);
  48         char *(*memory_setup)(void);
  49         void (*init_IRQ)(void);
  50
  51         void (*banner)(void);
  52
  53         unsigned long (*get_wallclock)(void);
  54         int (*set_wallclock)(unsigned long);
  55         void (*time_init)(void);
  56
  57         /* All the function pointers here are declared as "fastcall"
  58            so that we get a specific register-based calling
  59            convention.  This makes it easier to implement inline
  60            assembler replacements. */
  61
  62         void (*cpuid)(unsigned int *eax, unsigned int *ebx,
  63                       unsigned int *ecx, unsigned int *edx);
  64
  65         unsigned long (*get_debugreg)(int regno);
  66         void (*set_debugreg)(int regno, unsigned long value);
  67
  68         void (*clts)(void);
  69
  70         unsigned long (*read_cr0)(void);
  71         void (*write_cr0)(unsigned long);
  72
  73         unsigned long (*read_cr2)(void);
  74         void (*write_cr2)(unsigned long);
  75
  76         unsigned long (*read_cr3)(void);
  77         void (*write_cr3)(unsigned long);
  78
  79         unsigned long (*read_cr4_safe)(void);
  80         unsigned long (*read_cr4)(void);
  81         void (*write_cr4)(unsigned long);
  82
  83         unsigned long (*save_fl)(void);
  84         void (*restore_fl)(unsigned long);
  85         void (*irq_disable)(void);
  86         void (*irq_enable)(void);
  87         void (*safe_halt)(void);
  88         void (*halt)(void);
  89         void (*wbinvd)(void);
  90
  91         /* err = 0/-EFAULT.  wrmsr returns 0/-EFAULT. */
  92         u64 (*read_msr)(unsigned int msr, int *err);
  93         int (*write_msr)(unsigned int msr, u64 val);
  94
  95         u64 (*read_tsc)(void);
  96         u64 (*read_pmc)(void);
  97         u64 (*get_scheduled_cycles)(void);
  98         unsigned long (*get_cpu_khz)(void);
  99
 100         void (*load_tr_desc)(void);
 101         void (*load_gdt)(const struct Xgt_desc_struct *);
 102         void (*load_idt)(const struct Xgt_desc_struct *);
 103         void (*store_gdt)(struct Xgt_desc_struct *);
 104         void (*store_idt)(struct Xgt_desc_struct *);
 105         void (*set_ldt)(const void *desc, unsigned entries);
 106         unsigned long (*store_tr)(void);
 107         void (*load_tls)(struct thread_struct *t, unsigned int cpu);
 108         void (*write_ldt_entry)(void *dt, int entrynum,
 109                                          u32 low, u32 high);
 110         void (*write_gdt_entry)(void *dt, int entrynum,
 111                                          u32 low, u32 high);
 112         void (*write_idt_entry)(void *dt, int entrynum,
 113                                          u32 low, u32 high);
 114         void (*load_esp0)(struct tss_struct *tss,
 115                                    struct thread_struct *thread);
 116
 117         void (*set_iopl_mask)(unsigned mask);
 118
 119         void (*io_delay)(void);
 120         void (*const_udelay)(unsigned long loops);
 121
 122 #ifdef CONFIG_X86_LOCAL_APIC
 123         void (*apic_write)(unsigned long reg, unsigned long v);
 124         void (*apic_write_atomic)(unsigned long reg, unsigned long v);
 125         unsigned long (*apic_read)(unsigned long reg);
 126         void (*setup_boot_clock)(void);
 127         void (*setup_secondary_clock)(void);
 128 #endif
 129
 130         void (*flush_tlb_user)(void);
 131         void (*flush_tlb_kernel)(void);
 132         void (*flush_tlb_single)(u32 addr);
 133
 134         void (fastcall *map_pt_hook)(int type, pte_t *va, u32 pfn);
 135
 136         void (*alloc_pt)(u32 pfn);
 137         void (*alloc_pd)(u32 pfn);
 138         void (*alloc_pd_clone)(u32 pfn, u32 clonepfn, u32 start, u32 count);
 139         void (*release_pt)(u32 pfn);
 140         void (*release_pd)(u32 pfn);
 141
 142         void (*set_pte)(pte_t *ptep, pte_t pteval);
 143         void (*set_pte_at)(struct mm_struct *mm, u32 addr, pte_t *ptep, pte_t pteval);
 144         void (*set_pmd)(pmd_t *pmdp, pmd_t pmdval);
 145         void (*pte_update)(struct mm_struct *mm, u32 addr, pte_t *ptep);
 146         void (*pte_update_defer)(struct mm_struct *mm, u32 addr, pte_t *ptep);
 147 #ifdef CONFIG_X86_PAE
 148         void (*set_pte_atomic)(pte_t *ptep, pte_t pteval);
 149         void (*set_pte_present)(struct mm_struct *mm, unsigned long addr, pte_t *ptep, pte_t pte);
 150         void (*set_pud)(pud_t *pudp, pud_t pudval);
 151         void (*pte_clear)(struct mm_struct *mm, unsigned long addr, pte_t *ptep);
 152         void (*pmd_clear)(pmd_t *pmdp);
 153 #endif
 154
 155         void (*set_lazy_mode)(int mode);
 156
 157         /* These two are jmp to, not actually called. */
 158         void (*irq_enable_sysexit)(void);
 159         void (*iret)(void);
 160
 161         void (*startup_ipi_hook)(int phys_apicid, unsigned long start_eip, unsigned long start_esp);
 162 };
 163
 164 /* Mark a paravirt probe function. */
 165 #define paravirt_probe(fn)                                              \
 166  static asmlinkage void (*__paravirtprobe_##fn)(void) __attribute_used__ \
 167                 __attribute__((__section__(".paravirtprobe"))) = fn
 168
 169 extern struct paravirt_ops paravirt_ops;
 170
 171 #define paravirt_enabled() (paravirt_ops.paravirt_enabled)
 172
 173 static inline void load_esp0(struct tss_struct *tss,
 174                              struct thread_struct *thread)
 175 {
 176         paravirt_ops.load_esp0(tss, thread);
 177 }
 178
 179 #define ARCH_SETUP                      paravirt_ops.arch_setup();
 180 static inline unsigned long get_wallclock(void)
 181 {
 182         return paravirt_ops.get_wallclock();
 183 }
 184
 185 static inline int set_wallclock(unsigned long nowtime)
 186 {
 187         return paravirt_ops.set_wallclock(nowtime);
 188 }
 189
 190 static inline void do_time_init(void)
 191 {
 192         return paravirt_ops.time_init();
 193 }
 194
 195 /* The paravirtualized CPUID instruction. */
 196 static inline void __cpuid(unsigned int *eax, unsigned int *ebx,
 197                            unsigned int *ecx, unsigned int *edx)
 198 {
 199         paravirt_ops.cpuid(eax, ebx, ecx, edx);
 200 }
 201
 202 /*
 203  * These special macros can be used to get or set a debugging register
 204  */
 205 #define get_debugreg(var, reg) var = paravirt_ops.get_debugreg(reg)
 206 #define set_debugreg(val, reg) paravirt_ops.set_debugreg(reg, val)
 207
 208 #define clts() paravirt_ops.clts()
 209
 210 #define read_cr0() paravirt_ops.read_cr0()
 211 #define write_cr0(x) paravirt_ops.write_cr0(x)
 212
 213 #define read_cr2() paravirt_ops.read_cr2()
 214 #define write_cr2(x) paravirt_ops.write_cr2(x)
 215
 216 #define read_cr3() paravirt_ops.read_cr3()
 217 #define write_cr3(x) paravirt_ops.write_cr3(x)
 218
 219 #define read_cr4() paravirt_ops.read_cr4()
 220 #define read_cr4_safe(x) paravirt_ops.read_cr4_safe()
 221 #define write_cr4(x) paravirt_ops.write_cr4(x)
 222
 223 static inline void raw_safe_halt(void)
 224 {
 225         paravirt_ops.safe_halt();
 226 }
 227
 228 static inline void halt(void)
 229 {
 230         paravirt_ops.safe_halt();
 231 }
 232 #define wbinvd() paravirt_ops.wbinvd()
 233
 234 #define get_kernel_rpl()  (paravirt_ops.kernel_rpl)
 235
 236 #define rdmsr(msr,val1,val2) do {                               \
 237         int _err;                                               \
 238         u64 _l = paravirt_ops.read_msr(msr,&_err);              \
 239         val1 = (u32)_l;                                         \
 240         val2 = _l >> 32;                                        \
 241 } while(0)
 242
 243 #define wrmsr(msr,val1,val2) do {                               \
 244         u64 _l = ((u64)(val2) << 32) | (val1);                  \
 245         paravirt_ops.write_msr((msr), _l);                      \
 246 } while(0)
 247
 248 #define rdmsrl(msr,val) do {                                    \
 249         int _err;                                               \
 250         val = paravirt_ops.read_msr((msr),&_err);               \
 251 } while(0)
 252
 253 #define wrmsrl(msr,val) (paravirt_ops.write_msr((msr),(val)))
 254 #define wrmsr_safe(msr,a,b) ({                                  \
 255         u64 _l = ((u64)(b) << 32) | (a);                        \
 256         paravirt_ops.write_msr((msr),_l);                       \
 257 })
 258
 259 /* rdmsr with exception handling */
 260 #define rdmsr_safe(msr,a,b) ({                                  \
 261         int _err;                                               \
 262         u64 _l = paravirt_ops.read_msr(msr,&_err);              \
 263         (*a) = (u32)_l;                                         \
 264         (*b) = _l >> 32;                                        \
 265         _err; })
 266
 267 #define rdtsc(low,high) do {                                    \
 268         u64 _l = paravirt_ops.read_tsc();                       \
 269         low = (u32)_l;                                          \
 270         high = _l >> 32;                                        \
 271 } while(0)
 272
 273 #define rdtscl(low) do {                                        \
 274         u64 _l = paravirt_ops.read_tsc();                       \
 275         low = (int)_l;                                          \
 276 } while(0)
 277
 278 #define rdtscll(val) (val = paravirt_ops.read_tsc())
 279
 280 #define get_scheduled_cycles(val) (val = paravirt_ops.get_scheduled_cycles())
 281 #define calculate_cpu_khz() (paravirt_ops.get_cpu_khz())
 282
 283 #define write_tsc(val1,val2) wrmsr(0x10, val1, val2)
 284
 285 #define rdpmc(counter,low,high) do {                            \
 286         u64 _l = paravirt_ops.read_pmc();                       \
 287         low = (u32)_l;                                          \
 288         high = _l >> 32;                                        \
 289 } while(0)
 290
 291 #define load_TR_desc() (paravirt_ops.load_tr_desc())
 292 #define load_gdt(dtr) (paravirt_ops.load_gdt(dtr))
 293 #define load_idt(dtr) (paravirt_ops.load_idt(dtr))
 294 #define set_ldt(addr, entries) (paravirt_ops.set_ldt((addr), (entries)))
 295 #define store_gdt(dtr) (paravirt_ops.store_gdt(dtr))
 296 #define store_idt(dtr) (paravirt_ops.store_idt(dtr))
 297 #define store_tr(tr) ((tr) = paravirt_ops.store_tr())
 298 #define load_TLS(t,cpu) (paravirt_ops.load_tls((t),(cpu)))
 299 #define write_ldt_entry(dt, entry, low, high)                           \
 300         (paravirt_ops.write_ldt_entry((dt), (entry), (low), (high)))
 301 #define write_gdt_entry(dt, entry, low, high)                           \
 302         (paravirt_ops.write_gdt_entry((dt), (entry), (low), (high)))
 303 #define write_idt_entry(dt, entry, low, high)                           \
 304         (paravirt_ops.write_idt_entry((dt), (entry), (low), (high)))
 305 #define set_iopl_mask(mask) (paravirt_ops.set_iopl_mask(mask))
 306
 307 /* The paravirtualized I/O functions */
 308 static inline void slow_down_io(void) {
 309         paravirt_ops.io_delay();
 310 #ifdef REALLY_SLOW_IO
 311         paravirt_ops.io_delay();
 312         paravirt_ops.io_delay();
 313         paravirt_ops.io_delay();
 314 #endif
 315 }
 316
 317 #ifdef CONFIG_X86_LOCAL_APIC
 318 /*
 319  * Basic functions accessing APICs.
 320  */
 321 static inline void apic_write(unsigned long reg, unsigned long v)
 322 {
 323         paravirt_ops.apic_write(reg,v);
 324 }
 325
 326 static inline void apic_write_atomic(unsigned long reg, unsigned long v)
 327 {
 328         paravirt_ops.apic_write_atomic(reg,v);
 329 }
 330
 331 static inline unsigned long apic_read(unsigned long reg)
 332 {
 333         return paravirt_ops.apic_read(reg);
 334 }
 335
 336 static inline void setup_boot_clock(void)
 337 {
 338         paravirt_ops.setup_boot_clock();
 339 }
 340
 341 static inline void setup_secondary_clock(void)
 342 {
 343         paravirt_ops.setup_secondary_clock();
 344 }
 345 #endif
 346
 347 #ifdef CONFIG_SMP
 348 static inline void startup_ipi_hook(int phys_apicid, unsigned long start_eip,
 349                                     unsigned long start_esp)
 350 {
 351         return paravirt_ops.startup_ipi_hook(phys_apicid, start_eip, start_esp);
 352 }
 353 #endif
 354
 355 #define __flush_tlb() paravirt_ops.flush_tlb_user()
 356 #define __flush_tlb_global() paravirt_ops.flush_tlb_kernel()
 357 #define __flush_tlb_single(addr) paravirt_ops.flush_tlb_single(addr)
 358
 359 #define paravirt_map_pt_hook(type, va, pfn) paravirt_ops.map_pt_hook(type, va, pfn)
 360
 361 #define paravirt_alloc_pt(pfn) paravirt_ops.alloc_pt(pfn)
 362 #define paravirt_release_pt(pfn) paravirt_ops.release_pt(pfn)
 363
 364 #define paravirt_alloc_pd(pfn) paravirt_ops.alloc_pd(pfn)
 365 #define paravirt_alloc_pd_clone(pfn, clonepfn, start, count) \
 366         paravirt_ops.alloc_pd_clone(pfn, clonepfn, start, count)
 367 #define paravirt_release_pd(pfn) paravirt_ops.release_pd(pfn)
 368
 369 static inline void set_pte(pte_t *ptep, pte_t pteval)
 370 {
 371         paravirt_ops.set_pte(ptep, pteval);
 372 }
 373
 374 static inline void set_pte_at(struct mm_struct *mm, u32 addr, pte_t *ptep, pte_t pteval)
 375 {
 376         paravirt_ops.set_pte_at(mm, addr, ptep, pteval);
 377 }
 378
 379 static inline void set_pmd(pmd_t *pmdp, pmd_t pmdval)
 380 {
 381         paravirt_ops.set_pmd(pmdp, pmdval);
 382 }
 383
 384 static inline void pte_update(struct mm_struct *mm, u32 addr, pte_t *ptep)
 385 {
 386         paravirt_ops.pte_update(mm, addr, ptep);
 387 }
 388
 389 static inline void pte_update_defer(struct mm_struct *mm, u32 addr, pte_t *ptep)
 390 {
 391         paravirt_ops.pte_update_defer(mm, addr, ptep);
 392 }
 393
 394 #ifdef CONFIG_X86_PAE
 395 static inline void set_pte_atomic(pte_t *ptep, pte_t pteval)
 396 {
 397         paravirt_ops.set_pte_atomic(ptep, pteval);
 398 }
 399
 400 static inline void set_pte_present(struct mm_struct *mm, unsigned long addr, pte_t *ptep, pte_t pte)
 401 {
 402         paravirt_ops.set_pte_present(mm, addr, ptep, pte);
 403 }
 404
 405 static inline void set_pud(pud_t *pudp, pud_t pudval)
 406 {
 407         paravirt_ops.set_pud(pudp, pudval);
 408 }
 409
 410 static inline void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
 411 {
 412         paravirt_ops.pte_clear(mm, addr, ptep);
 413 }
 414
 415 static inline void pmd_clear(pmd_t *pmdp)
 416 {
 417         paravirt_ops.pmd_clear(pmdp);
 418 }
 419 #endif
 420
 421 /* Lazy mode for batching updates / context switch */
 422 #define PARAVIRT_LAZY_NONE 0
 423 #define PARAVIRT_LAZY_MMU  1
 424 #define PARAVIRT_LAZY_CPU  2
 425
 426 #define  __HAVE_ARCH_ENTER_LAZY_CPU_MODE
 427 #define arch_enter_lazy_cpu_mode() paravirt_ops.set_lazy_mode(PARAVIRT_LAZY_CPU)
 428 #define arch_leave_lazy_cpu_mode() paravirt_ops.set_lazy_mode(PARAVIRT_LAZY_NONE)
 429
 430 #define  __HAVE_ARCH_ENTER_LAZY_MMU_MODE
 431 #define arch_enter_lazy_mmu_mode() paravirt_ops.set_lazy_mode(PARAVIRT_LAZY_MMU)
 432 #define arch_leave_lazy_mmu_mode() paravirt_ops.set_lazy_mode(PARAVIRT_LAZY_NONE)
 433
 434 /* These all sit in the .parainstructions section to tell us what to patch. */
 435 struct paravirt_patch {
 436         u8 *instr;              /* original instructions */
 437         u8 instrtype;           /* type of this instruction */
 438         u8 len;                 /* length of original instruction */
 439         u16 clobbers;           /* what registers you may clobber */
 440 };
 441
 442 #define paravirt_alt(insn_string, typenum, clobber)     \
 443         "771:\n\t" insn_string "\n" "772:\n"            \
 444         ".pushsection .parainstructions,\"a\"\n"        \
 445         "  .long 771b\n"                                \
 446         "  .byte " __stringify(typenum) "\n"            \
 447         "  .byte 772b-771b\n"                           \
 448         "  .short " __stringify(clobber) "\n"           \
 449         ".popsection"
 450
 451 static inline unsigned long __raw_local_save_flags(void)
 452 {
 453         unsigned long f;
 454
 455         __asm__ __volatile__(paravirt_alt( "pushl %%ecx; pushl %%edx;"
 456                                            "call *%1;"
 457                                            "popl %%edx; popl %%ecx",
 458                                           PARAVIRT_SAVE_FLAGS, CLBR_NONE)
 459                              : "=a"(f): "m"(paravirt_ops.save_fl)
 460                              : "memory", "cc");
 461         return f;
 462 }
 463
 464 static inline void raw_local_irq_restore(unsigned long f)
 465 {
 466         __asm__ __volatile__(paravirt_alt( "pushl %%ecx; pushl %%edx;"
 467                                            "call *%1;"
 468                                            "popl %%edx; popl %%ecx",
 469                                           PARAVIRT_RESTORE_FLAGS, CLBR_EAX)
 470                              : "=a"(f) : "m" (paravirt_ops.restore_fl), "0"(f)
 471                              : "memory", "cc");
 472 }
 473
 474 static inline void raw_local_irq_disable(void)
 475 {
 476         __asm__ __volatile__(paravirt_alt( "pushl %%ecx; pushl %%edx;"
 477                                            "call *%0;"
 478                                            "popl %%edx; popl %%ecx",
 479                                           PARAVIRT_IRQ_DISABLE, CLBR_EAX)
 480                              : : "m" (paravirt_ops.irq_disable)
 481                              : "memory", "eax", "cc");
 482 }
 483
 484 static inline void raw_local_irq_enable(void)
 485 {
 486         __asm__ __volatile__(paravirt_alt( "pushl %%ecx; pushl %%edx;"
 487                                            "call *%0;"
 488                                            "popl %%edx; popl %%ecx",
 489                                           PARAVIRT_IRQ_ENABLE, CLBR_EAX)
 490                              : : "m" (paravirt_ops.irq_enable)
 491                              : "memory", "eax", "cc");
 492 }
 493
 494 static inline unsigned long __raw_local_irq_save(void)
 495 {
 496         unsigned long f;
 497
 498         __asm__ __volatile__(paravirt_alt( "pushl %%ecx; pushl %%edx;"
 499                                            "call *%1; pushl %%eax;"
 500                                            "call *%2; popl %%eax;"
 501                                            "popl %%edx; popl %%ecx",
 502                                           PARAVIRT_SAVE_FLAGS_IRQ_DISABLE,
 503                                           CLBR_NONE)
 504                              : "=a"(f)
 505                              : "m" (paravirt_ops.save_fl),
 506                                "m" (paravirt_ops.irq_disable)
 507                              : "memory", "cc");
 508         return f;
 509 }
 510
 511 #define CLI_STRING paravirt_alt("pushl %%ecx; pushl %%edx;"             \
 512                      "call *paravirt_ops+%c[irq_disable];"              \
 513                      "popl %%edx; popl %%ecx",                          \
 514                      PARAVIRT_IRQ_DISABLE, CLBR_EAX)
 515
 516 #define STI_STRING paravirt_alt("pushl %%ecx; pushl %%edx;"             \
 517                      "call *paravirt_ops+%c[irq_enable];"               \
 518                      "popl %%edx; popl %%ecx",                          \
 519                      PARAVIRT_IRQ_ENABLE, CLBR_EAX)
 520 #define CLI_STI_CLOBBERS , "%eax"
 521 #define CLI_STI_INPUT_ARGS \
 522         ,                                                               \
 523         [irq_disable] "i" (offsetof(struct paravirt_ops, irq_disable)), \
 524         [irq_enable] "i" (offsetof(struct paravirt_ops, irq_enable))
 525
 526 #else  /* __ASSEMBLY__ */
 527
 528 #define PARA_PATCH(ptype, clobbers, ops)        \
 529 771:;                                           \
 530         ops;                                    \
 531 772:;                                           \
 532         .pushsection .parainstructions,"a";     \
 533          .long 771b;                            \
 534          .byte ptype;                           \
 535          .byte 772b-771b;                       \
 536          .short clobbers;                       \
 537         .popsection
 538
 539 #define INTERRUPT_RETURN                                \
 540         PARA_PATCH(PARAVIRT_INTERRUPT_RETURN, CLBR_ANY, \
 541         jmp *%cs:paravirt_ops+PARAVIRT_iret)
 542
 543 #define DISABLE_INTERRUPTS(clobbers)                    \
 544         PARA_PATCH(PARAVIRT_IRQ_DISABLE, clobbers,      \
 545         pushl %ecx; pushl %edx;                         \
 546         call *paravirt_ops+PARAVIRT_irq_disable;        \
 547         popl %edx; popl %ecx)                           \
 548
 549 #define ENABLE_INTERRUPTS(clobbers)                     \
 550         PARA_PATCH(PARAVIRT_IRQ_ENABLE, clobbers,       \
 551         pushl %ecx; pushl %edx;                         \
 552         call *%cs:paravirt_ops+PARAVIRT_irq_enable;     \
 553         popl %edx; popl %ecx)
 554
 555 #define ENABLE_INTERRUPTS_SYSEXIT                       \
 556         PARA_PATCH(PARAVIRT_STI_SYSEXIT, CLBR_ANY,      \
 557         jmp *%cs:paravirt_ops+PARAVIRT_irq_enable_sysexit)
 558
 559 #define GET_CR0_INTO_EAX                        \
 560         call *paravirt_ops+PARAVIRT_read_cr0
 561
 562 #endif /* __ASSEMBLY__ */
 563 #endif /* CONFIG_PARAVIRT */
 564 #endif  /* __ASM_PARAVIRT_H */