err.no 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
   6 #ifdef CONFIG_PARAVIRT
   7 #include <asm/page.h>
   8
   9 /* Bitmask of what can be clobbered: usually at least eax. */
  10 #define CLBR_NONE 0x0
  11 #define CLBR_EAX 0x1
  12 #define CLBR_ECX 0x2
  13 #define CLBR_EDX 0x4
  14 #define CLBR_ANY 0x7
  15
  16 #ifndef __ASSEMBLY__
  17 #include <linux/types.h>
  18 #include <linux/cpumask.h>
  19
  20 struct thread_struct;
  21 struct Xgt_desc_struct;
  22 struct tss_struct;
  23 struct mm_struct;
  24 struct desc_struct;
  25
  26 /* Lazy mode for batching updates / context switch */
  27 enum paravirt_lazy_mode {
  28         PARAVIRT_LAZY_NONE = 0,
  29         PARAVIRT_LAZY_MMU = 1,
  30         PARAVIRT_LAZY_CPU = 2,
  31 };
  32
  33 struct paravirt_ops
  34 {
  35         unsigned int kernel_rpl;
  36         int shared_kernel_pmd;
  37         int paravirt_enabled;
  38         const char *name;
  39
  40         /*
  41          * Patch may replace one of the defined code sequences with arbitrary
  42          * code, subject to the same register constraints.  This generally
  43          * means the code is not free to clobber any registers other than EAX.
  44          * The patch function should return the number of bytes of code
  45          * generated, as we nop pad the rest in generic code.
  46          */
  47         unsigned (*patch)(u8 type, u16 clobber, void *firstinsn, unsigned len);
  48
  49         /* Basic arch-specific setup */
  50         void (*arch_setup)(void);
  51         char *(*memory_setup)(void);
  52         void (*init_IRQ)(void);
  53         void (*time_init)(void);
  54
  55         /*
  56          * Called before/after init_mm pagetable setup. setup_start
  57          * may reset %cr3, and may pre-install parts of the pagetable;
  58          * pagetable setup is expected to preserve any existing
  59          * mapping.
  60          */
  61         void (*pagetable_setup_start)(pgd_t *pgd_base);
  62         void (*pagetable_setup_done)(pgd_t *pgd_base);
  63
  64         /* Print a banner to identify the environment */
  65         void (*banner)(void);
  66
  67         /* Set and set time of day */
  68         unsigned long (*get_wallclock)(void);
  69         int (*set_wallclock)(unsigned long);
  70
  71         /* cpuid emulation, mostly so that caps bits can be disabled */
  72         void (*cpuid)(unsigned int *eax, unsigned int *ebx,
  73                       unsigned int *ecx, unsigned int *edx);
  74
  75         /* hooks for various privileged instructions */
  76         unsigned long (*get_debugreg)(int regno);
  77         void (*set_debugreg)(int regno, unsigned long value);
  78
  79         void (*clts)(void);
  80
  81         unsigned long (*read_cr0)(void);
  82         void (*write_cr0)(unsigned long);
  83
  84         unsigned long (*read_cr2)(void);
  85         void (*write_cr2)(unsigned long);
  86
  87         unsigned long (*read_cr3)(void);
  88         void (*write_cr3)(unsigned long);
  89
  90         unsigned long (*read_cr4_safe)(void);
  91         unsigned long (*read_cr4)(void);
  92         void (*write_cr4)(unsigned long);
  93
  94         /*
  95          * Get/set interrupt state.  save_fl and restore_fl are only
  96          * expected to use X86_EFLAGS_IF; all other bits
  97          * returned from save_fl are undefined, and may be ignored by
  98          * restore_fl.
  99          */
 100         unsigned long (*save_fl)(void);
 101         void (*restore_fl)(unsigned long);
 102         void (*irq_disable)(void);
 103         void (*irq_enable)(void);
 104         void (*safe_halt)(void);
 105         void (*halt)(void);
 106
 107         void (*wbinvd)(void);
 108
 109         /* MSR, PMC and TSR operations.
 110            err = 0/-EFAULT.  wrmsr returns 0/-EFAULT. */
 111         u64 (*read_msr)(unsigned int msr, int *err);
 112         int (*write_msr)(unsigned int msr, u64 val);
 113
 114         u64 (*read_tsc)(void);
 115         u64 (*read_pmc)(void);
 116         u64 (*get_scheduled_cycles)(void);
 117         unsigned long (*get_cpu_khz)(void);
 118
 119         /* Segment descriptor handling */
 120         void (*load_tr_desc)(void);
 121         void (*load_gdt)(const struct Xgt_desc_struct *);
 122         void (*load_idt)(const struct Xgt_desc_struct *);
 123         void (*store_gdt)(struct Xgt_desc_struct *);
 124         void (*store_idt)(struct Xgt_desc_struct *);
 125         void (*set_ldt)(const void *desc, unsigned entries);
 126         unsigned long (*store_tr)(void);
 127         void (*load_tls)(struct thread_struct *t, unsigned int cpu);
 128         void (*write_ldt_entry)(struct desc_struct *,
 129                                 int entrynum, u32 low, u32 high);
 130         void (*write_gdt_entry)(struct desc_struct *,
 131                                 int entrynum, u32 low, u32 high);
 132         void (*write_idt_entry)(struct desc_struct *,
 133                                 int entrynum, u32 low, u32 high);
 134         void (*load_esp0)(struct tss_struct *tss, struct thread_struct *t);
 135
 136         void (*set_iopl_mask)(unsigned mask);
 137         void (*io_delay)(void);
 138
 139         /*
 140          * Hooks for intercepting the creation/use/destruction of an
 141          * mm_struct.
 142          */
 143         void (*activate_mm)(struct mm_struct *prev,
 144                             struct mm_struct *next);
 145         void (*dup_mmap)(struct mm_struct *oldmm,
 146                          struct mm_struct *mm);
 147         void (*exit_mmap)(struct mm_struct *mm);
 148
 149 #ifdef CONFIG_X86_LOCAL_APIC
 150         /*
 151          * Direct APIC operations, principally for VMI.  Ideally
 152          * these shouldn't be in this interface.
 153          */
 154         void (*apic_write)(unsigned long reg, unsigned long v);
 155         void (*apic_write_atomic)(unsigned long reg, unsigned long v);
 156         unsigned long (*apic_read)(unsigned long reg);
 157         void (*setup_boot_clock)(void);
 158         void (*setup_secondary_clock)(void);
 159
 160         void (*startup_ipi_hook)(int phys_apicid,
 161                                  unsigned long start_eip,
 162                                  unsigned long start_esp);
 163 #endif
 164
 165         /* TLB operations */
 166         void (*flush_tlb_user)(void);
 167         void (*flush_tlb_kernel)(void);
 168         void (*flush_tlb_single)(unsigned long addr);
 169         void (*flush_tlb_others)(const cpumask_t *cpus, struct mm_struct *mm,
 170                                  unsigned long va);
 171
 172         /* Hooks for allocating/releasing pagetable pages */
 173         void (*alloc_pt)(u32 pfn);
 174         void (*alloc_pd)(u32 pfn);
 175         void (*alloc_pd_clone)(u32 pfn, u32 clonepfn, u32 start, u32 count);
 176         void (*release_pt)(u32 pfn);
 177         void (*release_pd)(u32 pfn);
 178
 179         /* Pagetable manipulation functions */
 180         void (*set_pte)(pte_t *ptep, pte_t pteval);
 181         void (*set_pte_at)(struct mm_struct *mm, unsigned long addr,
 182                            pte_t *ptep, pte_t pteval);
 183         void (*set_pmd)(pmd_t *pmdp, pmd_t pmdval);
 184         void (*pte_update)(struct mm_struct *mm, unsigned long addr, pte_t *ptep);
 185         void (*pte_update_defer)(struct mm_struct *mm,
 186                                  unsigned long addr, pte_t *ptep);
 187
 188         pte_t (*ptep_get_and_clear)(pte_t *ptep);
 189
 190 #ifdef CONFIG_X86_PAE
 191         void (*set_pte_atomic)(pte_t *ptep, pte_t pteval);
 192         void (*set_pte_present)(struct mm_struct *mm, unsigned long addr, pte_t *ptep, pte_t pte);
 193         void (*set_pud)(pud_t *pudp, pud_t pudval);
 194         void (*pte_clear)(struct mm_struct *mm, unsigned long addr, pte_t *ptep);
 195         void (*pmd_clear)(pmd_t *pmdp);
 196
 197         unsigned long long (*pte_val)(pte_t);
 198         unsigned long long (*pmd_val)(pmd_t);
 199         unsigned long long (*pgd_val)(pgd_t);
 200
 201         pte_t (*make_pte)(unsigned long long pte);
 202         pmd_t (*make_pmd)(unsigned long long pmd);
 203         pgd_t (*make_pgd)(unsigned long long pgd);
 204 #else
 205         unsigned long (*pte_val)(pte_t);
 206         unsigned long (*pgd_val)(pgd_t);
 207
 208         pte_t (*make_pte)(unsigned long pte);
 209         pgd_t (*make_pgd)(unsigned long pgd);
 210 #endif
 211
 212         /* Set deferred update mode, used for batching operations. */
 213         void (*set_lazy_mode)(enum paravirt_lazy_mode mode);
 214
 215         /* These two are jmp to, not actually called. */
 216         void (*irq_enable_sysexit)(void);
 217         void (*iret)(void);
 218 };
 219
 220 /* Mark a paravirt probe function. */
 221 #define paravirt_probe(fn)                                              \
 222  static asmlinkage void (*__paravirtprobe_##fn)(void) __attribute_used__ \
 223                 __attribute__((__section__(".paravirtprobe"))) = fn
 224
 225 extern struct paravirt_ops paravirt_ops;
 226
 227 #define PARAVIRT_PATCH(x)                                       \
 228         (offsetof(struct paravirt_ops, x) / sizeof(void *))
 229
 230 #define paravirt_type(type)                                     \
 231         [paravirt_typenum] "i" (PARAVIRT_PATCH(type))
 232 #define paravirt_clobber(clobber)               \
 233         [paravirt_clobber] "i" (clobber)
 234
 235 /*
 236  * Generate some code, and mark it as patchable by the
 237  * apply_paravirt() alternate instruction patcher.
 238  */
 239 #define _paravirt_alt(insn_string, type, clobber)       \
 240         "771:\n\t" insn_string "\n" "772:\n"            \
 241         ".pushsection .parainstructions,\"a\"\n"        \
 242         "  .long 771b\n"                                \
 243         "  .byte " type "\n"                            \
 244         "  .byte 772b-771b\n"                           \
 245         "  .short " clobber "\n"                        \
 246         ".popsection\n"
 247
 248 /* Generate patchable code, with the default asm parameters. */
 249 #define paravirt_alt(insn_string)                                       \
 250         _paravirt_alt(insn_string, "%c[paravirt_typenum]", "%c[paravirt_clobber]")
 251
 252 unsigned paravirt_patch_nop(void);
 253 unsigned paravirt_patch_ignore(unsigned len);
 254 unsigned paravirt_patch_call(void *target, u16 tgt_clobbers,
 255                              void *site, u16 site_clobbers,
 256                              unsigned len);
 257 unsigned paravirt_patch_jmp(void *target, void *site, unsigned len);
 258 unsigned paravirt_patch_default(u8 type, u16 clobbers, void *site, unsigned len);
 259
 260 unsigned paravirt_patch_insns(void *site, unsigned len,
 261                               const char *start, const char *end);
 262
 263
 264 /*
 265  * This generates an indirect call based on the operation type number.
 266  * The type number, computed in PARAVIRT_PATCH, is derived from the
 267  * offset into the paravirt_ops structure, and can therefore be freely
 268  * converted back into a structure offset.
 269  */
 270 #define PARAVIRT_CALL   "call *(paravirt_ops+%c[paravirt_typenum]*4);"
 271
 272 /*
 273  * These macros are intended to wrap calls into a paravirt_ops
 274  * operation, so that they can be later identified and patched at
 275  * runtime.
 276  *
 277  * Normally, a call to a pv_op function is a simple indirect call:
 278  * (paravirt_ops.operations)(args...).
 279  *
 280  * Unfortunately, this is a relatively slow operation for modern CPUs,
 281  * because it cannot necessarily determine what the destination
 282  * address is.  In this case, the address is a runtime constant, so at
 283  * the very least we can patch the call to e a simple direct call, or
 284  * ideally, patch an inline implementation into the callsite.  (Direct
 285  * calls are essentially free, because the call and return addresses
 286  * are completely predictable.)
 287  *
 288  * These macros rely on the standard gcc "regparm(3)" calling
 289  * convention, in which the first three arguments are placed in %eax,
 290  * %edx, %ecx (in that order), and the remaining arguments are placed
 291  * on the stack.  All caller-save registers (eax,edx,ecx) are expected
 292  * to be modified (either clobbered or used for return values).
 293  *
 294  * The call instruction itself is marked by placing its start address
 295  * and size into the .parainstructions section, so that
 296  * apply_paravirt() in arch/i386/kernel/alternative.c can do the
 297  * appropriate patching under the control of the backend paravirt_ops
 298  * implementation.
 299  *
 300  * Unfortunately there's no way to get gcc to generate the args setup
 301  * for the call, and then allow the call itself to be generated by an
 302  * inline asm.  Because of this, we must do the complete arg setup and
 303  * return value handling from within these macros.  This is fairly
 304  * cumbersome.
 305  *
 306  * There are 5 sets of PVOP_* macros for dealing with 0-4 arguments.
 307  * It could be extended to more arguments, but there would be little
 308  * to be gained from that.  For each number of arguments, there are
 309  * the two VCALL and CALL variants for void and non-void functions.
 310  *
 311  * When there is a return value, the invoker of the macro must specify
 312  * the return type.  The macro then uses sizeof() on that type to
 313  * determine whether its a 32 or 64 bit value, and places the return
 314  * in the right register(s) (just %eax for 32-bit, and %edx:%eax for
 315  * 64-bit).
 316  *
 317  * 64-bit arguments are passed as a pair of adjacent 32-bit arguments
 318  * in low,high order.
 319  *
 320  * Small structures are passed and returned in registers.  The macro
 321  * calling convention can't directly deal with this, so the wrapper
 322  * functions must do this.
 323  *
 324  * These PVOP_* macros are only defined within this header.  This
 325  * means that all uses must be wrapped in inline functions.  This also
 326  * makes sure the incoming and outgoing types are always correct.
 327  */
 328 #define PVOP_CALL0(__rettype, __op)                                     \
 329         ({                                                              \
 330                 __rettype __ret;                                        \
 331                 if (sizeof(__rettype) > sizeof(unsigned long)) {        \
 332                         unsigned long long __tmp;                       \
 333                         unsigned long __ecx;                            \
 334                         asm volatile(paravirt_alt(PARAVIRT_CALL)        \
 335                                      : "=A" (__tmp), "=c" (__ecx)       \
 336                                      : paravirt_type(__op),             \
 337                                        paravirt_clobber(CLBR_ANY)       \
 338                                      : "memory", "cc");                 \
 339                         __ret = (__rettype)__tmp;                       \
 340                 } else {                                                \
 341                         unsigned long __tmp, __edx, __ecx;              \
 342                         asm volatile(paravirt_alt(PARAVIRT_CALL)        \
 343                                      : "=a" (__tmp), "=d" (__edx),      \
 344                                        "=c" (__ecx)                     \
 345                                      : paravirt_type(__op),             \
 346                                        paravirt_clobber(CLBR_ANY)       \
 347                                      : "memory", "cc");                 \
 348                         __ret = (__rettype)__tmp;                       \
 349                 }                                                       \
 350                 __ret;                                                  \
 351         })
 352 #define PVOP_VCALL0(__op)                                               \
 353         ({                                                              \
 354                 unsigned long __eax, __edx, __ecx;                      \
 355                 asm volatile(paravirt_alt(PARAVIRT_CALL)                \
 356                              : "=a" (__eax), "=d" (__edx), "=c" (__ecx) \
 357                              : paravirt_type(__op),                     \
 358                                paravirt_clobber(CLBR_ANY)               \
 359                              : "memory", "cc");                         \
 360         })
 361
 362 #define PVOP_CALL1(__rettype, __op, arg1)                               \
 363         ({                                                              \
 364                 __rettype __ret;                                        \
 365                 if (sizeof(__rettype) > sizeof(unsigned long)) {        \
 366                         unsigned long long __tmp;                       \
 367                         unsigned long __ecx;                            \
 368                         asm volatile(paravirt_alt(PARAVIRT_CALL)        \
 369                                      : "=A" (__tmp), "=c" (__ecx)       \
 370                                      : "a" ((u32)(arg1)),               \
 371                                        paravirt_type(__op),             \
 372                                        paravirt_clobber(CLBR_ANY)       \
 373                                      : "memory", "cc");                 \
 374                         __ret = (__rettype)__tmp;                       \
 375                 } else {                                                \
 376                         unsigned long __tmp, __edx, __ecx;              \
 377                         asm volatile(paravirt_alt(PARAVIRT_CALL)        \
 378                                      : "=a" (__tmp), "=d" (__edx),      \
 379                                        "=c" (__ecx)                     \
 380                                      : "0" ((u32)(arg1)),               \
 381                                        paravirt_type(__op),             \
 382                                        paravirt_clobber(CLBR_ANY)       \
 383                                      : "memory", "cc");                 \
 384                         __ret = (__rettype)__tmp;                       \
 385                 }                                                       \
 386                 __ret;                                                  \
 387         })
 388 #define PVOP_VCALL1(__op, arg1)                                         \
 389         ({                                                              \
 390                 unsigned long __eax, __edx, __ecx;                      \
 391                 asm volatile(paravirt_alt(PARAVIRT_CALL)                \
 392                              : "=a" (__eax), "=d" (__edx), "=c" (__ecx) \
 393                              : "0" ((u32)(arg1)),                       \
 394                                paravirt_type(__op),                     \
 395                                paravirt_clobber(CLBR_ANY)               \
 396                              : "memory", "cc");                         \
 397         })
 398
 399 #define PVOP_CALL2(__rettype, __op, arg1, arg2)                         \
 400         ({                                                              \
 401                 __rettype __ret;                                        \
 402                 if (sizeof(__rettype) > sizeof(unsigned long)) {        \
 403                         unsigned long long __tmp;                       \
 404                         unsigned long __ecx;                            \
 405                         asm volatile(paravirt_alt(PARAVIRT_CALL)        \
 406                                      : "=A" (__tmp), "=c" (__ecx)       \
 407                                      : "a" ((u32)(arg1)),               \
 408                                        "d" ((u32)(arg2)),               \
 409                                        paravirt_type(__op),             \
 410                                        paravirt_clobber(CLBR_ANY)       \
 411                                      : "memory", "cc");                 \
 412                         __ret = (__rettype)__tmp;                       \
 413                 } else {                                                \
 414                         unsigned long __tmp, __edx, __ecx;              \
 415                         asm volatile(paravirt_alt(PARAVIRT_CALL)        \
 416                                      : "=a" (__tmp), "=d" (__edx),      \
 417                                        "=c" (__ecx)                     \
 418                                      : "0" ((u32)(arg1)),               \
 419                                        "1" ((u32)(arg2)),               \
 420                                        paravirt_type(__op),             \
 421                                        paravirt_clobber(CLBR_ANY)       \
 422                                      : "memory", "cc");                 \
 423                         __ret = (__rettype)__tmp;                       \
 424                 }                                                       \
 425                 __ret;                                                  \
 426         })
 427 #define PVOP_VCALL2(__op, arg1, arg2)                                   \
 428         ({                                                              \
 429                 unsigned long __eax, __edx, __ecx;                      \
 430                 asm volatile(paravirt_alt(PARAVIRT_CALL)                \
 431                              : "=a" (__eax), "=d" (__edx), "=c" (__ecx) \
 432                              : "0" ((u32)(arg1)),                       \
 433                                "1" ((u32)(arg2)),                       \
 434                                paravirt_type(__op),                     \
 435                                paravirt_clobber(CLBR_ANY)               \
 436                              : "memory", "cc");                         \
 437         })
 438
 439 #define PVOP_CALL3(__rettype, __op, arg1, arg2, arg3)                   \
 440         ({                                                              \
 441                 __rettype __ret;                                        \
 442                 if (sizeof(__rettype) > sizeof(unsigned long)) {        \
 443                         unsigned long long __tmp;                       \
 444                         unsigned long __ecx;                            \
 445                         asm volatile(paravirt_alt(PARAVIRT_CALL)        \
 446                                      : "=A" (__tmp), "=c" (__ecx)       \
 447                                      : "a" ((u32)(arg1)),               \
 448                                        "d" ((u32)(arg2)),               \
 449                                        "1" ((u32)(arg3)),               \
 450                                        paravirt_type(__op),             \
 451                                        paravirt_clobber(CLBR_ANY)       \
 452                                      : "memory", "cc");                 \
 453                         __ret = (__rettype)__tmp;                       \
 454                 } else {                                                \
 455                         unsigned long __tmp, __edx, __ecx;      \
 456                         asm volatile(paravirt_alt(PARAVIRT_CALL)        \
 457                                      : "=a" (__tmp), "=d" (__edx),      \
 458                                        "=c" (__ecx)                     \
 459                                      : "0" ((u32)(arg1)),               \
 460                                        "1" ((u32)(arg2)),               \
 461                                        "2" ((u32)(arg3)),               \
 462                                        paravirt_type(__op),             \
 463                                        paravirt_clobber(CLBR_ANY)       \
 464                                      : "memory", "cc");                 \
 465                         __ret = (__rettype)__tmp;                       \
 466                 }                                                       \
 467                 __ret;                                                  \
 468         })
 469 #define PVOP_VCALL3(__op, arg1, arg2, arg3)                             \
 470         ({                                                              \
 471                 unsigned long __eax, __edx, __ecx;                      \
 472                 asm volatile(paravirt_alt(PARAVIRT_CALL)                \
 473                              : "=a" (__eax), "=d" (__edx), "=c" (__ecx) \
 474                              : "0" ((u32)(arg1)),                       \
 475                                "1" ((u32)(arg2)),                       \
 476                                "2" ((u32)(arg3)),                       \
 477                                paravirt_type(__op),                     \
 478                                paravirt_clobber(CLBR_ANY)               \
 479                              : "memory", "cc");                         \
 480         })
 481
 482 #define PVOP_CALL4(__rettype, __op, arg1, arg2, arg3, arg4)             \
 483         ({                                                              \
 484                 __rettype __ret;                                        \
 485                 if (sizeof(__rettype) > sizeof(unsigned long)) {        \
 486                         unsigned long long __tmp;                       \
 487                         unsigned long __ecx;                            \
 488                         asm volatile("push %[_arg4]; "                  \
 489                                      paravirt_alt(PARAVIRT_CALL)        \
 490                                      "lea 4(%%esp),%%esp"               \
 491                                      : "=A" (__tmp), "=c" (__ecx)       \
 492                                      : "a" ((u32)(arg1)),               \
 493                                        "d" ((u32)(arg2)),               \
 494                                        "1" ((u32)(arg3)),               \
 495                                        [_arg4] "mr" ((u32)(arg4)),      \
 496                                        paravirt_type(__op),             \
 497                                        paravirt_clobber(CLBR_ANY)       \
 498                                      : "memory", "cc",);                \
 499                         __ret = (__rettype)__tmp;                       \
 500                 } else {                                                \
 501                         unsigned long __tmp, __edx, __ecx;              \
 502                         asm volatile("push %[_arg4]; "                  \
 503                                      paravirt_alt(PARAVIRT_CALL)        \
 504                                      "lea 4(%%esp),%%esp"               \
 505                                      : "=a" (__tmp), "=d" (__edx), "=c" (__ecx) \
 506                                      : "0" ((u32)(arg1)),               \
 507                                        "1" ((u32)(arg2)),               \
 508                                        "2" ((u32)(arg3)),               \
 509                                        [_arg4]"mr" ((u32)(arg4)),       \
 510                                        paravirt_type(__op),             \
 511                                        paravirt_clobber(CLBR_ANY)       \
 512                                      : "memory", "cc");                 \
 513                         __ret = (__rettype)__tmp;                       \
 514                 }                                                       \
 515                 __ret;                                                  \
 516         })
 517 #define PVOP_VCALL4(__op, arg1, arg2, arg3, arg4)                       \
 518         ({                                                              \
 519                 unsigned long __eax, __edx, __ecx;                      \
 520                 asm volatile("push %[_arg4]; "                          \
 521                              paravirt_alt(PARAVIRT_CALL)                \
 522                              "lea 4(%%esp),%%esp"                       \
 523                              : "=a" (__eax), "=d" (__edx), "=c" (__ecx) \
 524                              : "0" ((u32)(arg1)),                       \
 525                                "1" ((u32)(arg2)),                       \
 526                                "2" ((u32)(arg3)),                       \
 527                                [_arg4]"mr" ((u32)(arg4)),               \
 528                                paravirt_type(__op),                     \
 529                                paravirt_clobber(CLBR_ANY)               \
 530                              : "memory", "cc");                         \
 531         })
 532
 533 static inline int paravirt_enabled(void)
 534 {
 535         return paravirt_ops.paravirt_enabled;
 536 }
 537
 538 static inline void load_esp0(struct tss_struct *tss,
 539                              struct thread_struct *thread)
 540 {
 541         PVOP_VCALL2(load_esp0, tss, thread);
 542 }
 543
 544 #define ARCH_SETUP                      paravirt_ops.arch_setup();
 545 static inline unsigned long get_wallclock(void)
 546 {
 547         return PVOP_CALL0(unsigned long, get_wallclock);
 548 }
 549
 550 static inline int set_wallclock(unsigned long nowtime)
 551 {
 552         return PVOP_CALL1(int, set_wallclock, nowtime);
 553 }
 554
 555 static inline void (*choose_time_init(void))(void)
 556 {
 557         return paravirt_ops.time_init;
 558 }
 559
 560 /* The paravirtualized CPUID instruction. */
 561 static inline void __cpuid(unsigned int *eax, unsigned int *ebx,
 562                            unsigned int *ecx, unsigned int *edx)
 563 {
 564         PVOP_VCALL4(cpuid, eax, ebx, ecx, edx);
 565 }
 566
 567 /*
 568  * These special macros can be used to get or set a debugging register
 569  */
 570 static inline unsigned long paravirt_get_debugreg(int reg)
 571 {
 572         return PVOP_CALL1(unsigned long, get_debugreg, reg);
 573 }
 574 #define get_debugreg(var, reg) var = paravirt_get_debugreg(reg)
 575 static inline void set_debugreg(unsigned long val, int reg)
 576 {
 577         PVOP_VCALL2(set_debugreg, reg, val);
 578 }
 579
 580 static inline void clts(void)
 581 {
 582         PVOP_VCALL0(clts);
 583 }
 584
 585 static inline unsigned long read_cr0(void)
 586 {
 587         return PVOP_CALL0(unsigned long, read_cr0);
 588 }
 589
 590 static inline void write_cr0(unsigned long x)
 591 {
 592         PVOP_VCALL1(write_cr0, x);
 593 }
 594
 595 static inline unsigned long read_cr2(void)
 596 {
 597         return PVOP_CALL0(unsigned long, read_cr2);
 598 }
 599
 600 static inline void write_cr2(unsigned long x)
 601 {
 602         PVOP_VCALL1(write_cr2, x);
 603 }
 604
 605 static inline unsigned long read_cr3(void)
 606 {
 607         return PVOP_CALL0(unsigned long, read_cr3);
 608 }
 609
 610 static inline void write_cr3(unsigned long x)
 611 {
 612         PVOP_VCALL1(write_cr3, x);
 613 }
 614
 615 static inline unsigned long read_cr4(void)
 616 {
 617         return PVOP_CALL0(unsigned long, read_cr4);
 618 }
 619 static inline unsigned long read_cr4_safe(void)
 620 {
 621         return PVOP_CALL0(unsigned long, read_cr4_safe);
 622 }
 623
 624 static inline void write_cr4(unsigned long x)
 625 {
 626         PVOP_VCALL1(write_cr4, x);
 627 }
 628
 629 static inline void raw_safe_halt(void)
 630 {
 631         PVOP_VCALL0(safe_halt);
 632 }
 633
 634 static inline void halt(void)
 635 {
 636         PVOP_VCALL0(safe_halt);
 637 }
 638
 639 static inline void wbinvd(void)
 640 {
 641         PVOP_VCALL0(wbinvd);
 642 }
 643
 644 #define get_kernel_rpl()  (paravirt_ops.kernel_rpl)
 645
 646 static inline u64 paravirt_read_msr(unsigned msr, int *err)
 647 {
 648         return PVOP_CALL2(u64, read_msr, msr, err);
 649 }
 650 static inline int paravirt_write_msr(unsigned msr, unsigned low, unsigned high)
 651 {
 652         return PVOP_CALL3(int, write_msr, msr, low, high);
 653 }
 654
 655 /* These should all do BUG_ON(_err), but our headers are too tangled. */
 656 #define rdmsr(msr,val1,val2) do {               \
 657         int _err;                               \
 658         u64 _l = paravirt_read_msr(msr, &_err); \
 659         val1 = (u32)_l;                         \
 660         val2 = _l >> 32;                        \
 661 } while(0)
 662
 663 #define wrmsr(msr,val1,val2) do {               \
 664         paravirt_write_msr(msr, val1, val2);    \
 665 } while(0)
 666
 667 #define rdmsrl(msr,val) do {                    \
 668         int _err;                               \
 669         val = paravirt_read_msr(msr, &_err);    \
 670 } while(0)
 671
 672 #define wrmsrl(msr,val)         ((void)paravirt_write_msr(msr, val, 0))
 673 #define wrmsr_safe(msr,a,b)     paravirt_write_msr(msr, a, b)
 674
 675 /* rdmsr with exception handling */
 676 #define rdmsr_safe(msr,a,b) ({                  \
 677         int _err;                               \
 678         u64 _l = paravirt_read_msr(msr, &_err); \
 679         (*a) = (u32)_l;                         \
 680         (*b) = _l >> 32;                        \
 681         _err; })
 682
 683
 684 static inline u64 paravirt_read_tsc(void)
 685 {
 686         return PVOP_CALL0(u64, read_tsc);
 687 }
 688 #define rdtsc(low,high) do {                    \
 689         u64 _l = paravirt_read_tsc();           \
 690         low = (u32)_l;                          \
 691         high = _l >> 32;                        \
 692 } while(0)
 693
 694 #define rdtscl(low) do {                        \
 695         u64 _l = paravirt_read_tsc();           \
 696         low = (int)_l;                          \
 697 } while(0)
 698
 699 #define rdtscll(val) (val = paravirt_read_tsc())
 700
 701 #define get_scheduled_cycles(val) (val = paravirt_ops.get_scheduled_cycles())
 702 #define calculate_cpu_khz() (paravirt_ops.get_cpu_khz())
 703
 704 #define write_tsc(val1,val2) wrmsr(0x10, val1, val2)
 705
 706 static inline unsigned long long paravirt_read_pmc(int counter)
 707 {
 708         return PVOP_CALL1(u64, read_pmc, counter);
 709 }
 710
 711 #define rdpmc(counter,low,high) do {            \
 712         u64 _l = paravirt_read_pmc(counter);    \
 713         low = (u32)_l;                          \
 714         high = _l >> 32;                        \
 715 } while(0)
 716
 717 static inline void load_TR_desc(void)
 718 {
 719         PVOP_VCALL0(load_tr_desc);
 720 }
 721 static inline void load_gdt(const struct Xgt_desc_struct *dtr)
 722 {
 723         PVOP_VCALL1(load_gdt, dtr);
 724 }
 725 static inline void load_idt(const struct Xgt_desc_struct *dtr)
 726 {
 727         PVOP_VCALL1(load_idt, dtr);
 728 }
 729 static inline void set_ldt(const void *addr, unsigned entries)
 730 {
 731         PVOP_VCALL2(set_ldt, addr, entries);
 732 }
 733 static inline void store_gdt(struct Xgt_desc_struct *dtr)
 734 {
 735         PVOP_VCALL1(store_gdt, dtr);
 736 }
 737 static inline void store_idt(struct Xgt_desc_struct *dtr)
 738 {
 739         PVOP_VCALL1(store_idt, dtr);
 740 }
 741 static inline unsigned long paravirt_store_tr(void)
 742 {
 743         return PVOP_CALL0(unsigned long, store_tr);
 744 }
 745 #define store_tr(tr)    ((tr) = paravirt_store_tr())
 746 static inline void load_TLS(struct thread_struct *t, unsigned cpu)
 747 {
 748         PVOP_VCALL2(load_tls, t, cpu);
 749 }
 750 static inline void write_ldt_entry(void *dt, int entry, u32 low, u32 high)
 751 {
 752         PVOP_VCALL4(write_ldt_entry, dt, entry, low, high);
 753 }
 754 static inline void write_gdt_entry(void *dt, int entry, u32 low, u32 high)
 755 {
 756         PVOP_VCALL4(write_gdt_entry, dt, entry, low, high);
 757 }
 758 static inline void write_idt_entry(void *dt, int entry, u32 low, u32 high)
 759 {
 760         PVOP_VCALL4(write_idt_entry, dt, entry, low, high);
 761 }
 762 static inline void set_iopl_mask(unsigned mask)
 763 {
 764         PVOP_VCALL1(set_iopl_mask, mask);
 765 }
 766
 767 /* The paravirtualized I/O functions */
 768 static inline void slow_down_io(void) {
 769         paravirt_ops.io_delay();
 770 #ifdef REALLY_SLOW_IO
 771         paravirt_ops.io_delay();
 772         paravirt_ops.io_delay();
 773         paravirt_ops.io_delay();
 774 #endif
 775 }
 776
 777 #ifdef CONFIG_X86_LOCAL_APIC
 778 /*
 779  * Basic functions accessing APICs.
 780  */
 781 static inline void apic_write(unsigned long reg, unsigned long v)
 782 {
 783         PVOP_VCALL2(apic_write, reg, v);
 784 }
 785
 786 static inline void apic_write_atomic(unsigned long reg, unsigned long v)
 787 {
 788         PVOP_VCALL2(apic_write_atomic, reg, v);
 789 }
 790
 791 static inline unsigned long apic_read(unsigned long reg)
 792 {
 793         return PVOP_CALL1(unsigned long, apic_read, reg);
 794 }
 795
 796 static inline void setup_boot_clock(void)
 797 {
 798         PVOP_VCALL0(setup_boot_clock);
 799 }
 800
 801 static inline void setup_secondary_clock(void)
 802 {
 803         PVOP_VCALL0(setup_secondary_clock);
 804 }
 805 #endif
 806
 807 static inline void paravirt_pagetable_setup_start(pgd_t *base)
 808 {
 809         if (paravirt_ops.pagetable_setup_start)
 810                 (*paravirt_ops.pagetable_setup_start)(base);
 811 }
 812
 813 static inline void paravirt_pagetable_setup_done(pgd_t *base)
 814 {
 815         if (paravirt_ops.pagetable_setup_done)
 816                 (*paravirt_ops.pagetable_setup_done)(base);
 817 }
 818
 819 #ifdef CONFIG_SMP
 820 static inline void startup_ipi_hook(int phys_apicid, unsigned long start_eip,
 821                                     unsigned long start_esp)
 822 {
 823         PVOP_VCALL3(startup_ipi_hook, phys_apicid, start_eip, start_esp);
 824 }
 825 #endif
 826
 827 static inline void paravirt_activate_mm(struct mm_struct *prev,
 828                                         struct mm_struct *next)
 829 {
 830         PVOP_VCALL2(activate_mm, prev, next);
 831 }
 832
 833 static inline void arch_dup_mmap(struct mm_struct *oldmm,
 834                                  struct mm_struct *mm)
 835 {
 836         PVOP_VCALL2(dup_mmap, oldmm, mm);
 837 }
 838
 839 static inline void arch_exit_mmap(struct mm_struct *mm)
 840 {
 841         PVOP_VCALL1(exit_mmap, mm);
 842 }
 843
 844 static inline void __flush_tlb(void)
 845 {
 846         PVOP_VCALL0(flush_tlb_user);
 847 }
 848 static inline void __flush_tlb_global(void)
 849 {
 850         PVOP_VCALL0(flush_tlb_kernel);
 851 }
 852 static inline void __flush_tlb_single(unsigned long addr)
 853 {
 854         PVOP_VCALL1(flush_tlb_single, addr);
 855 }
 856
 857 static inline void flush_tlb_others(cpumask_t cpumask, struct mm_struct *mm,
 858                                     unsigned long va)
 859 {
 860         PVOP_VCALL3(flush_tlb_others, &cpumask, mm, va);
 861 }
 862
 863 static inline void paravirt_alloc_pt(unsigned pfn)
 864 {
 865         PVOP_VCALL1(alloc_pt, pfn);
 866 }
 867 static inline void paravirt_release_pt(unsigned pfn)
 868 {
 869         PVOP_VCALL1(release_pt, pfn);
 870 }
 871
 872 static inline void paravirt_alloc_pd(unsigned pfn)
 873 {
 874         PVOP_VCALL1(alloc_pd, pfn);
 875 }
 876
 877 static inline void paravirt_alloc_pd_clone(unsigned pfn, unsigned clonepfn,
 878                                            unsigned start, unsigned count)
 879 {
 880         PVOP_VCALL4(alloc_pd_clone, pfn, clonepfn, start, count);
 881 }
 882 static inline void paravirt_release_pd(unsigned pfn)
 883 {
 884         PVOP_VCALL1(release_pd, pfn);
 885 }
 886
 887 static inline void pte_update(struct mm_struct *mm, unsigned long addr,
 888                               pte_t *ptep)
 889 {
 890         PVOP_VCALL3(pte_update, mm, addr, ptep);
 891 }
 892
 893 static inline void pte_update_defer(struct mm_struct *mm, unsigned long addr,
 894                                     pte_t *ptep)
 895 {
 896         PVOP_VCALL3(pte_update_defer, mm, addr, ptep);
 897 }
 898
 899 #ifdef CONFIG_X86_PAE
 900 static inline pte_t __pte(unsigned long long val)
 901 {
 902         unsigned long long ret = PVOP_CALL2(unsigned long long, make_pte,
 903                                             val, val >> 32);
 904         return (pte_t) { ret, ret >> 32 };
 905 }
 906
 907 static inline pmd_t __pmd(unsigned long long val)
 908 {
 909         return (pmd_t) { PVOP_CALL2(unsigned long long, make_pmd, val, val >> 32) };
 910 }
 911
 912 static inline pgd_t __pgd(unsigned long long val)
 913 {
 914         return (pgd_t) { PVOP_CALL2(unsigned long long, make_pgd, val, val >> 32) };
 915 }
 916
 917 static inline unsigned long long pte_val(pte_t x)
 918 {
 919         return PVOP_CALL2(unsigned long long, pte_val, x.pte_low, x.pte_high);
 920 }
 921
 922 static inline unsigned long long pmd_val(pmd_t x)
 923 {
 924         return PVOP_CALL2(unsigned long long, pmd_val, x.pmd, x.pmd >> 32);
 925 }
 926
 927 static inline unsigned long long pgd_val(pgd_t x)
 928 {
 929         return PVOP_CALL2(unsigned long long, pgd_val, x.pgd, x.pgd >> 32);
 930 }
 931
 932 static inline void set_pte(pte_t *ptep, pte_t pteval)
 933 {
 934         PVOP_VCALL3(set_pte, ptep, pteval.pte_low, pteval.pte_high);
 935 }
 936
 937 static inline void set_pte_at(struct mm_struct *mm, unsigned long addr,
 938                               pte_t *ptep, pte_t pteval)
 939 {
 940         /* 5 arg words */
 941         paravirt_ops.set_pte_at(mm, addr, ptep, pteval);
 942 }
 943
 944 static inline void set_pte_atomic(pte_t *ptep, pte_t pteval)
 945 {
 946         PVOP_VCALL3(set_pte_atomic, ptep, pteval.pte_low, pteval.pte_high);
 947 }
 948
 949 static inline void set_pte_present(struct mm_struct *mm, unsigned long addr,
 950                                    pte_t *ptep, pte_t pte)
 951 {
 952         /* 5 arg words */
 953         paravirt_ops.set_pte_present(mm, addr, ptep, pte);
 954 }
 955
 956 static inline void set_pmd(pmd_t *pmdp, pmd_t pmdval)
 957 {
 958         PVOP_VCALL3(set_pmd, pmdp, pmdval.pmd, pmdval.pmd >> 32);
 959 }
 960
 961 static inline void set_pud(pud_t *pudp, pud_t pudval)
 962 {
 963         PVOP_VCALL3(set_pud, pudp, pudval.pgd.pgd, pudval.pgd.pgd >> 32);
 964 }
 965
 966 static inline void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
 967 {
 968         PVOP_VCALL3(pte_clear, mm, addr, ptep);
 969 }
 970
 971 static inline void pmd_clear(pmd_t *pmdp)
 972 {
 973         PVOP_VCALL1(pmd_clear, pmdp);
 974 }
 975
 976 static inline pte_t raw_ptep_get_and_clear(pte_t *p)
 977 {
 978         unsigned long long val = PVOP_CALL1(unsigned long long, ptep_get_and_clear, p);
 979         return (pte_t) { val, val >> 32 };
 980 }
 981 #else  /* !CONFIG_X86_PAE */
 982 static inline pte_t __pte(unsigned long val)
 983 {
 984         return (pte_t) { PVOP_CALL1(unsigned long, make_pte, val) };
 985 }
 986
 987 static inline pgd_t __pgd(unsigned long val)
 988 {
 989         return (pgd_t) { PVOP_CALL1(unsigned long, make_pgd, val) };
 990 }
 991
 992 static inline unsigned long pte_val(pte_t x)
 993 {
 994         return PVOP_CALL1(unsigned long, pte_val, x.pte_low);
 995 }
 996
 997 static inline unsigned long pgd_val(pgd_t x)
 998 {
 999         return PVOP_CALL1(unsigned long, pgd_val, x.pgd);
1000 }
1001
1002 static inline void set_pte(pte_t *ptep, pte_t pteval)
1003 {
1004         PVOP_VCALL2(set_pte, ptep, pteval.pte_low);
1005 }
1006
1007 static inline void set_pte_at(struct mm_struct *mm, unsigned long addr,
1008                               pte_t *ptep, pte_t pteval)
1009 {
1010         PVOP_VCALL4(set_pte_at, mm, addr, ptep, pteval.pte_low);
1011 }
1012
1013 static inline void set_pmd(pmd_t *pmdp, pmd_t pmdval)
1014 {
1015         PVOP_VCALL2(set_pmd, pmdp, pmdval.pud.pgd.pgd);
1016 }
1017
1018 static inline pte_t raw_ptep_get_and_clear(pte_t *p)
1019 {
1020         return (pte_t) { PVOP_CALL1(unsigned long, ptep_get_and_clear, p) };
1021 }
1022 #endif  /* CONFIG_X86_PAE */
1023
1024 /* Lazy mode for batching updates / context switch */
1025 #define PARAVIRT_LAZY_NONE 0
1026 #define PARAVIRT_LAZY_MMU  1
1027 #define PARAVIRT_LAZY_CPU  2
1028 #define PARAVIRT_LAZY_FLUSH 3
1029
1030 #define  __HAVE_ARCH_ENTER_LAZY_CPU_MODE
1031 static inline void arch_enter_lazy_cpu_mode(void)
1032 {
1033         PVOP_VCALL1(set_lazy_mode, PARAVIRT_LAZY_CPU);
1034 }
1035
1036 static inline void arch_leave_lazy_cpu_mode(void)
1037 {
1038         PVOP_VCALL1(set_lazy_mode, PARAVIRT_LAZY_NONE);
1039 }
1040
1041 static inline void arch_flush_lazy_cpu_mode(void)
1042 {
1043         PVOP_VCALL1(set_lazy_mode, PARAVIRT_LAZY_FLUSH);
1044 }
1045
1046
1047 #define  __HAVE_ARCH_ENTER_LAZY_MMU_MODE
1048 static inline void arch_enter_lazy_mmu_mode(void)
1049 {
1050         PVOP_VCALL1(set_lazy_mode, PARAVIRT_LAZY_MMU);
1051 }
1052
1053 static inline void arch_leave_lazy_mmu_mode(void)
1054 {
1055         PVOP_VCALL1(set_lazy_mode, PARAVIRT_LAZY_NONE);
1056 }
1057
1058 static inline void arch_flush_lazy_mmu_mode(void)
1059 {
1060         PVOP_VCALL1(set_lazy_mode, PARAVIRT_LAZY_FLUSH);
1061 }
1062
1063 void _paravirt_nop(void);
1064 #define paravirt_nop    ((void *)_paravirt_nop)
1065
1066 /* These all sit in the .parainstructions section to tell us what to patch. */
1067 struct paravirt_patch_site {
1068         u8 *instr;              /* original instructions */
1069         u8 instrtype;           /* type of this instruction */
1070         u8 len;                 /* length of original instruction */
1071         u16 clobbers;           /* what registers you may clobber */
1072 };
1073
1074 extern struct paravirt_patch_site __parainstructions[],
1075         __parainstructions_end[];
1076
1077 static inline unsigned long __raw_local_save_flags(void)
1078 {
1079         unsigned long f;
1080
1081         asm volatile(paravirt_alt("pushl %%ecx; pushl %%edx;"
1082                                   PARAVIRT_CALL
1083                                   "popl %%edx; popl %%ecx")
1084                      : "=a"(f)
1085                      : paravirt_type(save_fl),
1086                        paravirt_clobber(CLBR_EAX)
1087                      : "memory", "cc");
1088         return f;
1089 }
1090
1091 static inline void raw_local_irq_restore(unsigned long f)
1092 {
1093         asm volatile(paravirt_alt("pushl %%ecx; pushl %%edx;"
1094                                   PARAVIRT_CALL
1095                                   "popl %%edx; popl %%ecx")
1096                      : "=a"(f)
1097                      : "0"(f),
1098                        paravirt_type(restore_fl),
1099                        paravirt_clobber(CLBR_EAX)
1100                      : "memory", "cc");
1101 }
1102
1103 static inline void raw_local_irq_disable(void)
1104 {
1105         asm volatile(paravirt_alt("pushl %%ecx; pushl %%edx;"
1106                                   PARAVIRT_CALL
1107                                   "popl %%edx; popl %%ecx")
1108                      :
1109                      : paravirt_type(irq_disable),
1110                        paravirt_clobber(CLBR_EAX)
1111                      : "memory", "eax", "cc");
1112 }
1113
1114 static inline void raw_local_irq_enable(void)
1115 {
1116         asm volatile(paravirt_alt("pushl %%ecx; pushl %%edx;"
1117                                   PARAVIRT_CALL
1118                                   "popl %%edx; popl %%ecx")
1119                      :
1120                      : paravirt_type(irq_enable),
1121                        paravirt_clobber(CLBR_EAX)
1122                      : "memory", "eax", "cc");
1123 }
1124
1125 static inline unsigned long __raw_local_irq_save(void)
1126 {
1127         unsigned long f;
1128
1129         f = __raw_local_save_flags();
1130         raw_local_irq_disable();
1131         return f;
1132 }
1133
1134 #define CLI_STRING                                                      \
1135         _paravirt_alt("pushl %%ecx; pushl %%edx;"                       \
1136                       "call *paravirt_ops+%c[paravirt_cli_type]*4;"     \
1137                       "popl %%edx; popl %%ecx",                         \
1138                       "%c[paravirt_cli_type]", "%c[paravirt_clobber]")
1139
1140 #define STI_STRING                                                      \
1141         _paravirt_alt("pushl %%ecx; pushl %%edx;"                       \
1142                       "call *paravirt_ops+%c[paravirt_sti_type]*4;"     \
1143                       "popl %%edx; popl %%ecx",                         \
1144                       "%c[paravirt_sti_type]", "%c[paravirt_clobber]")
1145
1146 #define CLI_STI_CLOBBERS , "%eax"
1147 #define CLI_STI_INPUT_ARGS                                              \
1148         ,                                                               \
1149         [paravirt_cli_type] "i" (PARAVIRT_PATCH(irq_disable)),          \
1150         [paravirt_sti_type] "i" (PARAVIRT_PATCH(irq_enable)),           \
1151         paravirt_clobber(CLBR_EAX)
1152
1153 /* Make sure as little as possible of this mess escapes. */
1154 #undef PARAVIRT_CALL
1155 #undef PVOP_VCALL0
1156 #undef PVOP_CALL0
1157 #undef PVOP_VCALL1
1158 #undef PVOP_CALL1
1159 #undef PVOP_VCALL2
1160 #undef PVOP_CALL2
1161 #undef PVOP_VCALL3
1162 #undef PVOP_CALL3
1163 #undef PVOP_VCALL4
1164 #undef PVOP_CALL4
1165
1166 #else  /* __ASSEMBLY__ */
1167
1168 #define PARA_PATCH(off) ((off) / 4)
1169
1170 #define PARA_SITE(ptype, clobbers, ops)         \
1171 771:;                                           \
1172         ops;                                    \
1173 772:;                                           \
1174         .pushsection .parainstructions,"a";     \
1175          .long 771b;                            \
1176          .byte ptype;                           \
1177          .byte 772b-771b;                       \
1178          .short clobbers;                       \
1179         .popsection
1180
1181 #define INTERRUPT_RETURN                                        \
1182         PARA_SITE(PARA_PATCH(PARAVIRT_iret), CLBR_NONE,         \
1183                   jmp *%cs:paravirt_ops+PARAVIRT_iret)
1184
1185 #define DISABLE_INTERRUPTS(clobbers)                                    \
1186         PARA_SITE(PARA_PATCH(PARAVIRT_irq_disable), clobbers,           \
1187                   pushl %eax; pushl %ecx; pushl %edx;                   \
1188                   call *%cs:paravirt_ops+PARAVIRT_irq_disable;          \
1189                   popl %edx; popl %ecx; popl %eax)                      \
1190
1191 #define ENABLE_INTERRUPTS(clobbers)                                     \
1192         PARA_SITE(PARA_PATCH(PARAVIRT_irq_enable), clobbers,            \
1193                   pushl %eax; pushl %ecx; pushl %edx;                   \
1194                   call *%cs:paravirt_ops+PARAVIRT_irq_enable;           \
1195                   popl %edx; popl %ecx; popl %eax)
1196
1197 #define ENABLE_INTERRUPTS_SYSEXIT                                       \
1198         PARA_SITE(PARA_PATCH(PARAVIRT_irq_enable_sysexit), CLBR_NONE,   \
1199                   jmp *%cs:paravirt_ops+PARAVIRT_irq_enable_sysexit)
1200
1201 #define GET_CR0_INTO_EAX                        \
1202         push %ecx; push %edx;                   \
1203         call *paravirt_ops+PARAVIRT_read_cr0;   \
1204         pop %edx; pop %ecx
1205
1206 #endif /* __ASSEMBLY__ */
1207 #endif /* CONFIG_PARAVIRT */
1208 #endif  /* __ASM_PARAVIRT_H */