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