qemu/target-i386/machine.c

   1 #include "hw/hw.h"
   2 #include "hw/boards.h"
   3 #include "hw/i386/pc.h"
   4 #include "hw/isa/isa.h"
   5
   6 #include "cpu.h"
   7 #include "sysemu/kvm.h"
   8
   9 static const VMStateDescription vmstate_segment = {
  10     .name = "segment",
  11     .version_id = 1,
  12     .minimum_version_id = 1,
  13     .fields = (VMStateField[]) {
  14         VMSTATE_UINT32(selector, SegmentCache),
  15         VMSTATE_UINTTL(base, SegmentCache),
  16         VMSTATE_UINT32(limit, SegmentCache),
  17         VMSTATE_UINT32(flags, SegmentCache),
  18         VMSTATE_END_OF_LIST()
  19     }
  20 };
  21
  22 #define VMSTATE_SEGMENT(_field, _state) {                            \
  23     .name       = (stringify(_field)),                               \
  24     .size       = sizeof(SegmentCache),                              \
  25     .vmsd       = &vmstate_segment,                                  \
  26     .flags      = VMS_STRUCT,                                        \
  27     .offset     = offsetof(_state, _field)                           \
  28             + type_check(SegmentCache,typeof_field(_state, _field))  \
  29 }
  30
  31 #define VMSTATE_SEGMENT_ARRAY(_field, _state, _n)                    \
  32     VMSTATE_STRUCT_ARRAY(_field, _state, _n, 0, vmstate_segment, SegmentCache)
  33
  34 static const VMStateDescription vmstate_xmm_reg = {
  35     .name = "xmm_reg",
  36     .version_id = 1,
  37     .minimum_version_id = 1,
  38     .fields = (VMStateField[]) {
  39         VMSTATE_UINT64(XMM_Q(0), XMMReg),
  40         VMSTATE_UINT64(XMM_Q(1), XMMReg),
  41         VMSTATE_END_OF_LIST()
  42     }
  43 };
  44
  45 #define VMSTATE_XMM_REGS(_field, _state, _start)                         \
  46     VMSTATE_STRUCT_SUB_ARRAY(_field, _state, _start, CPU_NB_REGS, 0,     \
  47                              vmstate_xmm_reg, XMMReg)
  48
  49 /* YMMH format is the same as XMM, but for bits 128-255 */
  50 static const VMStateDescription vmstate_ymmh_reg = {
  51     .name = "ymmh_reg",
  52     .version_id = 1,
  53     .minimum_version_id = 1,
  54     .fields = (VMStateField[]) {
  55         VMSTATE_UINT64(XMM_Q(2), XMMReg),
  56         VMSTATE_UINT64(XMM_Q(3), XMMReg),
  57         VMSTATE_END_OF_LIST()
  58     }
  59 };
  60
  61 #define VMSTATE_YMMH_REGS_VARS(_field, _state, _start, _v)               \
  62     VMSTATE_STRUCT_SUB_ARRAY(_field, _state, _start, CPU_NB_REGS, _v,    \
  63                              vmstate_ymmh_reg, XMMReg)
  64
  65 static const VMStateDescription vmstate_zmmh_reg = {
  66     .name = "zmmh_reg",
  67     .version_id = 1,
  68     .minimum_version_id = 1,
  69     .fields = (VMStateField[]) {
  70         VMSTATE_UINT64(XMM_Q(4), XMMReg),
  71         VMSTATE_UINT64(XMM_Q(5), XMMReg),
  72         VMSTATE_UINT64(XMM_Q(6), XMMReg),
  73         VMSTATE_UINT64(XMM_Q(7), XMMReg),
  74         VMSTATE_END_OF_LIST()
  75     }
  76 };
  77
  78 #define VMSTATE_ZMMH_REGS_VARS(_field, _state, _start)                   \
  79     VMSTATE_STRUCT_SUB_ARRAY(_field, _state, _start, CPU_NB_REGS, 0,     \
  80                              vmstate_zmmh_reg, XMMReg)
  81
  82 #ifdef TARGET_X86_64
  83 static const VMStateDescription vmstate_hi16_zmm_reg = {
  84     .name = "hi16_zmm_reg",
  85     .version_id = 1,
  86     .minimum_version_id = 1,
  87     .fields = (VMStateField[]) {
  88         VMSTATE_UINT64(XMM_Q(0), XMMReg),
  89         VMSTATE_UINT64(XMM_Q(1), XMMReg),
  90         VMSTATE_UINT64(XMM_Q(2), XMMReg),
  91         VMSTATE_UINT64(XMM_Q(3), XMMReg),
  92         VMSTATE_UINT64(XMM_Q(4), XMMReg),
  93         VMSTATE_UINT64(XMM_Q(5), XMMReg),
  94         VMSTATE_UINT64(XMM_Q(6), XMMReg),
  95         VMSTATE_UINT64(XMM_Q(7), XMMReg),
  96         VMSTATE_END_OF_LIST()
  97     }
  98 };
  99
 100 #define VMSTATE_Hi16_ZMM_REGS_VARS(_field, _state, _start)               \
 101     VMSTATE_STRUCT_SUB_ARRAY(_field, _state, _start, CPU_NB_REGS, 0,     \
 102                              vmstate_hi16_zmm_reg, XMMReg)
 103 #endif
 104
 105 static const VMStateDescription vmstate_bnd_regs = {
 106     .name = "bnd_regs",
 107     .version_id = 1,
 108     .minimum_version_id = 1,
 109     .fields = (VMStateField[]) {
 110         VMSTATE_UINT64(lb, BNDReg),
 111         VMSTATE_UINT64(ub, BNDReg),
 112         VMSTATE_END_OF_LIST()
 113     }
 114 };
 115
 116 #define VMSTATE_BND_REGS(_field, _state, _n)          \
 117     VMSTATE_STRUCT_ARRAY(_field, _state, _n, 0, vmstate_bnd_regs, BNDReg)
 118
 119 static const VMStateDescription vmstate_mtrr_var = {
 120     .name = "mtrr_var",
 121     .version_id = 1,
 122     .minimum_version_id = 1,
 123     .fields = (VMStateField[]) {
 124         VMSTATE_UINT64(base, MTRRVar),
 125         VMSTATE_UINT64(mask, MTRRVar),
 126         VMSTATE_END_OF_LIST()
 127     }
 128 };
 129
 130 #define VMSTATE_MTRR_VARS(_field, _state, _n, _v)                    \
 131     VMSTATE_STRUCT_ARRAY(_field, _state, _n, _v, vmstate_mtrr_var, MTRRVar)
 132
 133 static void put_fpreg_error(QEMUFile *f, void *opaque, size_t size)
 134 {
 135     fprintf(stderr, "call put_fpreg() with invalid arguments\n");
 136     exit(0);
 137 }
 138
 139 /* XXX: add that in a FPU generic layer */
 140 union x86_longdouble {
 141     uint64_t mant;
 142     uint16_t exp;
 143 };
 144
 145 #define MANTD1(fp)      (fp & ((1LL << 52) - 1))
 146 #define EXPBIAS1 1023
 147 #define EXPD1(fp)       ((fp >> 52) & 0x7FF)
 148 #define SIGND1(fp)      ((fp >> 32) & 0x80000000)
 149
 150 static void fp64_to_fp80(union x86_longdouble *p, uint64_t temp)
 151 {
 152     int e;
 153     /* mantissa */
 154     p->mant = (MANTD1(temp) << 11) | (1LL << 63);
 155     /* exponent + sign */
 156     e = EXPD1(temp) - EXPBIAS1 + 16383;
 157     e |= SIGND1(temp) >> 16;
 158     p->exp = e;
 159 }
 160
 161 static int get_fpreg(QEMUFile *f, void *opaque, size_t size)
 162 {
 163     FPReg *fp_reg = opaque;
 164     uint64_t mant;
 165     uint16_t exp;
 166
 167     qemu_get_be64s(f, &mant);
 168     qemu_get_be16s(f, &exp);
 169     fp_reg->d = cpu_set_fp80(mant, exp);
 170     return 0;
 171 }
 172
 173 static void put_fpreg(QEMUFile *f, void *opaque, size_t size)
 174 {
 175     FPReg *fp_reg = opaque;
 176     uint64_t mant;
 177     uint16_t exp;
 178     /* we save the real CPU data (in case of MMX usage only 'mant'
 179        contains the MMX register */
 180     cpu_get_fp80(&mant, &exp, fp_reg->d);
 181     qemu_put_be64s(f, &mant);
 182     qemu_put_be16s(f, &exp);
 183 }
 184
 185 static const VMStateInfo vmstate_fpreg = {
 186     .name = "fpreg",
 187     .get  = get_fpreg,
 188     .put  = put_fpreg,
 189 };
 190
 191 static int get_fpreg_1_mmx(QEMUFile *f, void *opaque, size_t size)
 192 {
 193     union x86_longdouble *p = opaque;
 194     uint64_t mant;
 195
 196     qemu_get_be64s(f, &mant);
 197     p->mant = mant;
 198     p->exp = 0xffff;
 199     return 0;
 200 }
 201
 202 static const VMStateInfo vmstate_fpreg_1_mmx = {
 203     .name = "fpreg_1_mmx",
 204     .get  = get_fpreg_1_mmx,
 205     .put  = put_fpreg_error,
 206 };
 207
 208 static int get_fpreg_1_no_mmx(QEMUFile *f, void *opaque, size_t size)
 209 {
 210     union x86_longdouble *p = opaque;
 211     uint64_t mant;
 212
 213     qemu_get_be64s(f, &mant);
 214     fp64_to_fp80(p, mant);
 215     return 0;
 216 }
 217
 218 static const VMStateInfo vmstate_fpreg_1_no_mmx = {
 219     .name = "fpreg_1_no_mmx",
 220     .get  = get_fpreg_1_no_mmx,
 221     .put  = put_fpreg_error,
 222 };
 223
 224 static bool fpregs_is_0(void *opaque, int version_id)
 225 {
 226     X86CPU *cpu = opaque;
 227     CPUX86State *env = &cpu->env;
 228
 229     return (env->fpregs_format_vmstate == 0);
 230 }
 231
 232 static bool fpregs_is_1_mmx(void *opaque, int version_id)
 233 {
 234     X86CPU *cpu = opaque;
 235     CPUX86State *env = &cpu->env;
 236     int guess_mmx;
 237
 238     guess_mmx = ((env->fptag_vmstate == 0xff) &&
 239                  (env->fpus_vmstate & 0x3800) == 0);
 240     return (guess_mmx && (env->fpregs_format_vmstate == 1));
 241 }
 242
 243 static bool fpregs_is_1_no_mmx(void *opaque, int version_id)
 244 {
 245     X86CPU *cpu = opaque;
 246     CPUX86State *env = &cpu->env;
 247     int guess_mmx;
 248
 249     guess_mmx = ((env->fptag_vmstate == 0xff) &&
 250                  (env->fpus_vmstate & 0x3800) == 0);
 251     return (!guess_mmx && (env->fpregs_format_vmstate == 1));
 252 }
 253
 254 #define VMSTATE_FP_REGS(_field, _state, _n)                               \
 255     VMSTATE_ARRAY_TEST(_field, _state, _n, fpregs_is_0, vmstate_fpreg, FPReg), \
 256     VMSTATE_ARRAY_TEST(_field, _state, _n, fpregs_is_1_mmx, vmstate_fpreg_1_mmx, FPReg), \
 257     VMSTATE_ARRAY_TEST(_field, _state, _n, fpregs_is_1_no_mmx, vmstate_fpreg_1_no_mmx, FPReg)
 258
 259 static bool version_is_5(void *opaque, int version_id)
 260 {
 261     return version_id == 5;
 262 }
 263
 264 #ifdef TARGET_X86_64
 265 static bool less_than_7(void *opaque, int version_id)
 266 {
 267     return version_id < 7;
 268 }
 269
 270 static int get_uint64_as_uint32(QEMUFile *f, void *pv, size_t size)
 271 {
 272     uint64_t *v = pv;
 273     *v = qemu_get_be32(f);
 274     return 0;
 275 }
 276
 277 static void put_uint64_as_uint32(QEMUFile *f, void *pv, size_t size)
 278 {
 279     uint64_t *v = pv;
 280     qemu_put_be32(f, *v);
 281 }
 282
 283 static const VMStateInfo vmstate_hack_uint64_as_uint32 = {
 284     .name = "uint64_as_uint32",
 285     .get  = get_uint64_as_uint32,
 286     .put  = put_uint64_as_uint32,
 287 };
 288
 289 #define VMSTATE_HACK_UINT32(_f, _s, _t)                                  \
 290     VMSTATE_SINGLE_TEST(_f, _s, _t, 0, vmstate_hack_uint64_as_uint32, uint64_t)
 291 #endif
 292
 293 static void cpu_pre_save(void *opaque)
 294 {
 295     X86CPU *cpu = opaque;
 296     CPUX86State *env = &cpu->env;
 297     int i;
 298
 299     /* FPU */
 300     env->fpus_vmstate = (env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11;
 301     env->fptag_vmstate = 0;
 302     for(i = 0; i < 8; i++) {
 303         env->fptag_vmstate |= ((!env->fptags[i]) << i);
 304     }
 305
 306     env->fpregs_format_vmstate = 0;
 307
 308     /*
 309      * Real mode guest segments register DPL should be zero.
 310      * Older KVM version were setting it wrongly.
 311      * Fixing it will allow live migration to host with unrestricted guest
 312      * support (otherwise the migration will fail with invalid guest state
 313      * error).
 314      */
 315     if (!(env->cr[0] & CR0_PE_MASK) &&
 316         (env->segs[R_CS].flags >> DESC_DPL_SHIFT & 3) != 0) {
 317         env->segs[R_CS].flags &= ~(env->segs[R_CS].flags & DESC_DPL_MASK);
 318         env->segs[R_DS].flags &= ~(env->segs[R_DS].flags & DESC_DPL_MASK);
 319         env->segs[R_ES].flags &= ~(env->segs[R_ES].flags & DESC_DPL_MASK);
 320         env->segs[R_FS].flags &= ~(env->segs[R_FS].flags & DESC_DPL_MASK);
 321         env->segs[R_GS].flags &= ~(env->segs[R_GS].flags & DESC_DPL_MASK);
 322         env->segs[R_SS].flags &= ~(env->segs[R_SS].flags & DESC_DPL_MASK);
 323     }
 324
 325 }
 326
 327 static int cpu_post_load(void *opaque, int version_id)
 328 {
 329     X86CPU *cpu = opaque;
 330     CPUState *cs = CPU(cpu);
 331     CPUX86State *env = &cpu->env;
 332     int i;
 333
 334     /*
 335      * Real mode guest segments register DPL should be zero.
 336      * Older KVM version were setting it wrongly.
 337      * Fixing it will allow live migration from such host that don't have
 338      * restricted guest support to a host with unrestricted guest support
 339      * (otherwise the migration will fail with invalid guest state
 340      * error).
 341      */
 342     if (!(env->cr[0] & CR0_PE_MASK) &&
 343         (env->segs[R_CS].flags >> DESC_DPL_SHIFT & 3) != 0) {
 344         env->segs[R_CS].flags &= ~(env->segs[R_CS].flags & DESC_DPL_MASK);
 345         env->segs[R_DS].flags &= ~(env->segs[R_DS].flags & DESC_DPL_MASK);
 346         env->segs[R_ES].flags &= ~(env->segs[R_ES].flags & DESC_DPL_MASK);
 347         env->segs[R_FS].flags &= ~(env->segs[R_FS].flags & DESC_DPL_MASK);
 348         env->segs[R_GS].flags &= ~(env->segs[R_GS].flags & DESC_DPL_MASK);
 349         env->segs[R_SS].flags &= ~(env->segs[R_SS].flags & DESC_DPL_MASK);
 350     }
 351
 352     /* Older versions of QEMU incorrectly used CS.DPL as the CPL when
 353      * running under KVM.  This is wrong for conforming code segments.
 354      * Luckily, in our implementation the CPL field of hflags is redundant
 355      * and we can get the right value from the SS descriptor privilege level.
 356      */
 357     env->hflags &= ~HF_CPL_MASK;
 358     env->hflags |= (env->segs[R_SS].flags >> DESC_DPL_SHIFT) & HF_CPL_MASK;
 359
 360     env->fpstt = (env->fpus_vmstate >> 11) & 7;
 361     env->fpus = env->fpus_vmstate & ~0x3800;
 362     env->fptag_vmstate ^= 0xff;
 363     for(i = 0; i < 8; i++) {
 364         env->fptags[i] = (env->fptag_vmstate >> i) & 1;
 365     }
 366     update_fp_status(env);
 367
 368     cpu_breakpoint_remove_all(cs, BP_CPU);
 369     cpu_watchpoint_remove_all(cs, BP_CPU);
 370     for (i = 0; i < DR7_MAX_BP; i++) {
 371         hw_breakpoint_insert(env, i);
 372     }
 373     tlb_flush(cs, 1);
 374
 375     if (tcg_enabled()) {
 376         cpu_smm_update(cpu);
 377     }
 378     return 0;
 379 }
 380
 381 static bool async_pf_msr_needed(void *opaque)
 382 {
 383     X86CPU *cpu = opaque;
 384
 385     return cpu->env.async_pf_en_msr != 0;
 386 }
 387
 388 static bool pv_eoi_msr_needed(void *opaque)
 389 {
 390     X86CPU *cpu = opaque;
 391
 392     return cpu->env.pv_eoi_en_msr != 0;
 393 }
 394
 395 static bool steal_time_msr_needed(void *opaque)
 396 {
 397     X86CPU *cpu = opaque;
 398
 399     return cpu->env.steal_time_msr != 0;
 400 }
 401
 402 static const VMStateDescription vmstate_steal_time_msr = {
 403     .name = "cpu/steal_time_msr",
 404     .version_id = 1,
 405     .minimum_version_id = 1,
 406     .needed = steal_time_msr_needed,
 407     .fields = (VMStateField[]) {
 408         VMSTATE_UINT64(env.steal_time_msr, X86CPU),
 409         VMSTATE_END_OF_LIST()
 410     }
 411 };
 412
 413 static const VMStateDescription vmstate_async_pf_msr = {
 414     .name = "cpu/async_pf_msr",
 415     .version_id = 1,
 416     .minimum_version_id = 1,
 417     .needed = async_pf_msr_needed,
 418     .fields = (VMStateField[]) {
 419         VMSTATE_UINT64(env.async_pf_en_msr, X86CPU),
 420         VMSTATE_END_OF_LIST()
 421     }
 422 };
 423
 424 static const VMStateDescription vmstate_pv_eoi_msr = {
 425     .name = "cpu/async_pv_eoi_msr",
 426     .version_id = 1,
 427     .minimum_version_id = 1,
 428     .needed = pv_eoi_msr_needed,
 429     .fields = (VMStateField[]) {
 430         VMSTATE_UINT64(env.pv_eoi_en_msr, X86CPU),
 431         VMSTATE_END_OF_LIST()
 432     }
 433 };
 434
 435 static bool fpop_ip_dp_needed(void *opaque)
 436 {
 437     X86CPU *cpu = opaque;
 438     CPUX86State *env = &cpu->env;
 439
 440     return env->fpop != 0 || env->fpip != 0 || env->fpdp != 0;
 441 }
 442
 443 static const VMStateDescription vmstate_fpop_ip_dp = {
 444     .name = "cpu/fpop_ip_dp",
 445     .version_id = 1,
 446     .minimum_version_id = 1,
 447     .needed = fpop_ip_dp_needed,
 448     .fields = (VMStateField[]) {
 449         VMSTATE_UINT16(env.fpop, X86CPU),
 450         VMSTATE_UINT64(env.fpip, X86CPU),
 451         VMSTATE_UINT64(env.fpdp, X86CPU),
 452         VMSTATE_END_OF_LIST()
 453     }
 454 };
 455
 456 static bool tsc_adjust_needed(void *opaque)
 457 {
 458     X86CPU *cpu = opaque;
 459     CPUX86State *env = &cpu->env;
 460
 461     return env->tsc_adjust != 0;
 462 }
 463
 464 static const VMStateDescription vmstate_msr_tsc_adjust = {
 465     .name = "cpu/msr_tsc_adjust",
 466     .version_id = 1,
 467     .minimum_version_id = 1,
 468     .needed = tsc_adjust_needed,
 469     .fields = (VMStateField[]) {
 470         VMSTATE_UINT64(env.tsc_adjust, X86CPU),
 471         VMSTATE_END_OF_LIST()
 472     }
 473 };
 474
 475 static bool tscdeadline_needed(void *opaque)
 476 {
 477     X86CPU *cpu = opaque;
 478     CPUX86State *env = &cpu->env;
 479
 480     return env->tsc_deadline != 0;
 481 }
 482
 483 static const VMStateDescription vmstate_msr_tscdeadline = {
 484     .name = "cpu/msr_tscdeadline",
 485     .version_id = 1,
 486     .minimum_version_id = 1,
 487     .needed = tscdeadline_needed,
 488     .fields = (VMStateField[]) {
 489         VMSTATE_UINT64(env.tsc_deadline, X86CPU),
 490         VMSTATE_END_OF_LIST()
 491     }
 492 };
 493
 494 static bool misc_enable_needed(void *opaque)
 495 {
 496     X86CPU *cpu = opaque;
 497     CPUX86State *env = &cpu->env;
 498
 499     return env->msr_ia32_misc_enable != MSR_IA32_MISC_ENABLE_DEFAULT;
 500 }
 501
 502 static bool feature_control_needed(void *opaque)
 503 {
 504     X86CPU *cpu = opaque;
 505     CPUX86State *env = &cpu->env;
 506
 507     return env->msr_ia32_feature_control != 0;
 508 }
 509
 510 static const VMStateDescription vmstate_msr_ia32_misc_enable = {
 511     .name = "cpu/msr_ia32_misc_enable",
 512     .version_id = 1,
 513     .minimum_version_id = 1,
 514     .needed = misc_enable_needed,
 515     .fields = (VMStateField[]) {
 516         VMSTATE_UINT64(env.msr_ia32_misc_enable, X86CPU),
 517         VMSTATE_END_OF_LIST()
 518     }
 519 };
 520
 521 static const VMStateDescription vmstate_msr_ia32_feature_control = {
 522     .name = "cpu/msr_ia32_feature_control",
 523     .version_id = 1,
 524     .minimum_version_id = 1,
 525     .needed = feature_control_needed,
 526     .fields = (VMStateField[]) {
 527         VMSTATE_UINT64(env.msr_ia32_feature_control, X86CPU),
 528         VMSTATE_END_OF_LIST()
 529     }
 530 };
 531
 532 static bool pmu_enable_needed(void *opaque)
 533 {
 534     X86CPU *cpu = opaque;
 535     CPUX86State *env = &cpu->env;
 536     int i;
 537
 538     if (env->msr_fixed_ctr_ctrl || env->msr_global_ctrl ||
 539         env->msr_global_status || env->msr_global_ovf_ctrl) {
 540         return true;
 541     }
 542     for (i = 0; i < MAX_FIXED_COUNTERS; i++) {
 543         if (env->msr_fixed_counters[i]) {
 544             return true;
 545         }
 546     }
 547     for (i = 0; i < MAX_GP_COUNTERS; i++) {
 548         if (env->msr_gp_counters[i] || env->msr_gp_evtsel[i]) {
 549             return true;
 550         }
 551     }
 552
 553     return false;
 554 }
 555
 556 static const VMStateDescription vmstate_msr_architectural_pmu = {
 557     .name = "cpu/msr_architectural_pmu",
 558     .version_id = 1,
 559     .minimum_version_id = 1,
 560     .needed = pmu_enable_needed,
 561     .fields = (VMStateField[]) {
 562         VMSTATE_UINT64(env.msr_fixed_ctr_ctrl, X86CPU),
 563         VMSTATE_UINT64(env.msr_global_ctrl, X86CPU),
 564         VMSTATE_UINT64(env.msr_global_status, X86CPU),
 565         VMSTATE_UINT64(env.msr_global_ovf_ctrl, X86CPU),
 566         VMSTATE_UINT64_ARRAY(env.msr_fixed_counters, X86CPU, MAX_FIXED_COUNTERS),
 567         VMSTATE_UINT64_ARRAY(env.msr_gp_counters, X86CPU, MAX_GP_COUNTERS),
 568         VMSTATE_UINT64_ARRAY(env.msr_gp_evtsel, X86CPU, MAX_GP_COUNTERS),
 569         VMSTATE_END_OF_LIST()
 570     }
 571 };
 572
 573 static bool mpx_needed(void *opaque)
 574 {
 575     X86CPU *cpu = opaque;
 576     CPUX86State *env = &cpu->env;
 577     unsigned int i;
 578
 579     for (i = 0; i < 4; i++) {
 580         if (env->bnd_regs[i].lb || env->bnd_regs[i].ub) {
 581             return true;
 582         }
 583     }
 584
 585     if (env->bndcs_regs.cfgu || env->bndcs_regs.sts) {
 586         return true;
 587     }
 588
 589     return !!env->msr_bndcfgs;
 590 }
 591
 592 static const VMStateDescription vmstate_mpx = {
 593     .name = "cpu/mpx",
 594     .version_id = 1,
 595     .minimum_version_id = 1,
 596     .needed = mpx_needed,
 597     .fields = (VMStateField[]) {
 598         VMSTATE_BND_REGS(env.bnd_regs, X86CPU, 4),
 599         VMSTATE_UINT64(env.bndcs_regs.cfgu, X86CPU),
 600         VMSTATE_UINT64(env.bndcs_regs.sts, X86CPU),
 601         VMSTATE_UINT64(env.msr_bndcfgs, X86CPU),
 602         VMSTATE_END_OF_LIST()
 603     }
 604 };
 605
 606 static bool hyperv_hypercall_enable_needed(void *opaque)
 607 {
 608     X86CPU *cpu = opaque;
 609     CPUX86State *env = &cpu->env;
 610
 611     return env->msr_hv_hypercall != 0 || env->msr_hv_guest_os_id != 0;
 612 }
 613
 614 static const VMStateDescription vmstate_msr_hypercall_hypercall = {
 615     .name = "cpu/msr_hyperv_hypercall",
 616     .version_id = 1,
 617     .minimum_version_id = 1,
 618     .needed = hyperv_hypercall_enable_needed,
 619     .fields = (VMStateField[]) {
 620         VMSTATE_UINT64(env.msr_hv_guest_os_id, X86CPU),
 621         VMSTATE_UINT64(env.msr_hv_hypercall, X86CPU),
 622         VMSTATE_END_OF_LIST()
 623     }
 624 };
 625
 626 static bool hyperv_vapic_enable_needed(void *opaque)
 627 {
 628     X86CPU *cpu = opaque;
 629     CPUX86State *env = &cpu->env;
 630
 631     return env->msr_hv_vapic != 0;
 632 }
 633
 634 static const VMStateDescription vmstate_msr_hyperv_vapic = {
 635     .name = "cpu/msr_hyperv_vapic",
 636     .version_id = 1,
 637     .minimum_version_id = 1,
 638     .needed = hyperv_vapic_enable_needed,
 639     .fields = (VMStateField[]) {
 640         VMSTATE_UINT64(env.msr_hv_vapic, X86CPU),
 641         VMSTATE_END_OF_LIST()
 642     }
 643 };
 644
 645 static bool hyperv_time_enable_needed(void *opaque)
 646 {
 647     X86CPU *cpu = opaque;
 648     CPUX86State *env = &cpu->env;
 649
 650     return env->msr_hv_tsc != 0;
 651 }
 652
 653 static const VMStateDescription vmstate_msr_hyperv_time = {
 654     .name = "cpu/msr_hyperv_time",
 655     .version_id = 1,
 656     .minimum_version_id = 1,
 657     .needed = hyperv_time_enable_needed,
 658     .fields = (VMStateField[]) {
 659         VMSTATE_UINT64(env.msr_hv_tsc, X86CPU),
 660         VMSTATE_END_OF_LIST()
 661     }
 662 };
 663
 664 static bool avx512_needed(void *opaque)
 665 {
 666     X86CPU *cpu = opaque;
 667     CPUX86State *env = &cpu->env;
 668     unsigned int i;
 669
 670     for (i = 0; i < NB_OPMASK_REGS; i++) {
 671         if (env->opmask_regs[i]) {
 672             return true;
 673         }
 674     }
 675
 676     for (i = 0; i < CPU_NB_REGS; i++) {
 677 #define ENV_XMM(reg, field) (env->xmm_regs[reg].XMM_Q(field))
 678         if (ENV_XMM(i, 4) || ENV_XMM(i, 6) ||
 679             ENV_XMM(i, 5) || ENV_XMM(i, 7)) {
 680             return true;
 681         }
 682 #ifdef TARGET_X86_64
 683         if (ENV_XMM(i+16, 0) || ENV_XMM(i+16, 1) ||
 684             ENV_XMM(i+16, 2) || ENV_XMM(i+16, 3) ||
 685             ENV_XMM(i+16, 4) || ENV_XMM(i+16, 5) ||
 686             ENV_XMM(i+16, 6) || ENV_XMM(i+16, 7)) {
 687             return true;
 688         }
 689 #endif
 690     }
 691
 692     return false;
 693 }
 694
 695 static const VMStateDescription vmstate_avx512 = {
 696     .name = "cpu/avx512",
 697     .version_id = 1,
 698     .minimum_version_id = 1,
 699     .needed = avx512_needed,
 700     .fields = (VMStateField[]) {
 701         VMSTATE_UINT64_ARRAY(env.opmask_regs, X86CPU, NB_OPMASK_REGS),
 702         VMSTATE_ZMMH_REGS_VARS(env.xmm_regs, X86CPU, 0),
 703 #ifdef TARGET_X86_64
 704         VMSTATE_Hi16_ZMM_REGS_VARS(env.xmm_regs, X86CPU, 16),
 705 #endif
 706         VMSTATE_END_OF_LIST()
 707     }
 708 };
 709
 710 static bool xss_needed(void *opaque)
 711 {
 712     X86CPU *cpu = opaque;
 713     CPUX86State *env = &cpu->env;
 714
 715     return env->xss != 0;
 716 }
 717
 718 static const VMStateDescription vmstate_xss = {
 719     .name = "cpu/xss",
 720     .version_id = 1,
 721     .minimum_version_id = 1,
 722     .needed = xss_needed,
 723     .fields = (VMStateField[]) {
 724         VMSTATE_UINT64(env.xss, X86CPU),
 725         VMSTATE_END_OF_LIST()
 726     }
 727 };
 728
 729 VMStateDescription vmstate_x86_cpu = {
 730     .name = "cpu",
 731     .version_id = 12,
 732     .minimum_version_id = 3,
 733     .pre_save = cpu_pre_save,
 734     .post_load = cpu_post_load,
 735     .fields = (VMStateField[]) {
 736         VMSTATE_UINTTL_ARRAY(env.regs, X86CPU, CPU_NB_REGS),
 737         VMSTATE_UINTTL(env.eip, X86CPU),
 738         VMSTATE_UINTTL(env.eflags, X86CPU),
 739         VMSTATE_UINT32(env.hflags, X86CPU),
 740         /* FPU */
 741         VMSTATE_UINT16(env.fpuc, X86CPU),
 742         VMSTATE_UINT16(env.fpus_vmstate, X86CPU),
 743         VMSTATE_UINT16(env.fptag_vmstate, X86CPU),
 744         VMSTATE_UINT16(env.fpregs_format_vmstate, X86CPU),
 745         VMSTATE_FP_REGS(env.fpregs, X86CPU, 8),
 746
 747         VMSTATE_SEGMENT_ARRAY(env.segs, X86CPU, 6),
 748         VMSTATE_SEGMENT(env.ldt, X86CPU),
 749         VMSTATE_SEGMENT(env.tr, X86CPU),
 750         VMSTATE_SEGMENT(env.gdt, X86CPU),
 751         VMSTATE_SEGMENT(env.idt, X86CPU),
 752
 753         VMSTATE_UINT32(env.sysenter_cs, X86CPU),
 754 #ifdef TARGET_X86_64
 755         /* Hack: In v7 size changed from 32 to 64 bits on x86_64 */
 756         VMSTATE_HACK_UINT32(env.sysenter_esp, X86CPU, less_than_7),
 757         VMSTATE_HACK_UINT32(env.sysenter_eip, X86CPU, less_than_7),
 758         VMSTATE_UINTTL_V(env.sysenter_esp, X86CPU, 7),
 759         VMSTATE_UINTTL_V(env.sysenter_eip, X86CPU, 7),
 760 #else
 761         VMSTATE_UINTTL(env.sysenter_esp, X86CPU),
 762         VMSTATE_UINTTL(env.sysenter_eip, X86CPU),
 763 #endif
 764
 765         VMSTATE_UINTTL(env.cr[0], X86CPU),
 766         VMSTATE_UINTTL(env.cr[2], X86CPU),
 767         VMSTATE_UINTTL(env.cr[3], X86CPU),
 768         VMSTATE_UINTTL(env.cr[4], X86CPU),
 769         VMSTATE_UINTTL_ARRAY(env.dr, X86CPU, 8),
 770         /* MMU */
 771         VMSTATE_INT32(env.a20_mask, X86CPU),
 772         /* XMM */
 773         VMSTATE_UINT32(env.mxcsr, X86CPU),
 774         VMSTATE_XMM_REGS(env.xmm_regs, X86CPU, 0),
 775
 776 #ifdef TARGET_X86_64
 777         VMSTATE_UINT64(env.efer, X86CPU),
 778         VMSTATE_UINT64(env.star, X86CPU),
 779         VMSTATE_UINT64(env.lstar, X86CPU),
 780         VMSTATE_UINT64(env.cstar, X86CPU),
 781         VMSTATE_UINT64(env.fmask, X86CPU),
 782         VMSTATE_UINT64(env.kernelgsbase, X86CPU),
 783 #endif
 784         VMSTATE_UINT32_V(env.smbase, X86CPU, 4),
 785
 786         VMSTATE_UINT64_V(env.pat, X86CPU, 5),
 787         VMSTATE_UINT32_V(env.hflags2, X86CPU, 5),
 788
 789         VMSTATE_UINT32_TEST(parent_obj.halted, X86CPU, version_is_5),
 790         VMSTATE_UINT64_V(env.vm_hsave, X86CPU, 5),
 791         VMSTATE_UINT64_V(env.vm_vmcb, X86CPU, 5),
 792         VMSTATE_UINT64_V(env.tsc_offset, X86CPU, 5),
 793         VMSTATE_UINT64_V(env.intercept, X86CPU, 5),
 794         VMSTATE_UINT16_V(env.intercept_cr_read, X86CPU, 5),
 795         VMSTATE_UINT16_V(env.intercept_cr_write, X86CPU, 5),
 796         VMSTATE_UINT16_V(env.intercept_dr_read, X86CPU, 5),
 797         VMSTATE_UINT16_V(env.intercept_dr_write, X86CPU, 5),
 798         VMSTATE_UINT32_V(env.intercept_exceptions, X86CPU, 5),
 799         VMSTATE_UINT8_V(env.v_tpr, X86CPU, 5),
 800         /* MTRRs */
 801         VMSTATE_UINT64_ARRAY_V(env.mtrr_fixed, X86CPU, 11, 8),
 802         VMSTATE_UINT64_V(env.mtrr_deftype, X86CPU, 8),
 803         VMSTATE_MTRR_VARS(env.mtrr_var, X86CPU, MSR_MTRRcap_VCNT, 8),
 804         /* KVM-related states */
 805         VMSTATE_INT32_V(env.interrupt_injected, X86CPU, 9),
 806         VMSTATE_UINT32_V(env.mp_state, X86CPU, 9),
 807         VMSTATE_UINT64_V(env.tsc, X86CPU, 9),
 808         VMSTATE_INT32_V(env.exception_injected, X86CPU, 11),
 809         VMSTATE_UINT8_V(env.soft_interrupt, X86CPU, 11),
 810         VMSTATE_UINT8_V(env.nmi_injected, X86CPU, 11),
 811         VMSTATE_UINT8_V(env.nmi_pending, X86CPU, 11),
 812         VMSTATE_UINT8_V(env.has_error_code, X86CPU, 11),
 813         VMSTATE_UINT32_V(env.sipi_vector, X86CPU, 11),
 814         /* MCE */
 815         VMSTATE_UINT64_V(env.mcg_cap, X86CPU, 10),
 816         VMSTATE_UINT64_V(env.mcg_status, X86CPU, 10),
 817         VMSTATE_UINT64_V(env.mcg_ctl, X86CPU, 10),
 818         VMSTATE_UINT64_ARRAY_V(env.mce_banks, X86CPU, MCE_BANKS_DEF * 4, 10),
 819         /* rdtscp */
 820         VMSTATE_UINT64_V(env.tsc_aux, X86CPU, 11),
 821         /* KVM pvclock msr */
 822         VMSTATE_UINT64_V(env.system_time_msr, X86CPU, 11),
 823         VMSTATE_UINT64_V(env.wall_clock_msr, X86CPU, 11),
 824         /* XSAVE related fields */
 825         VMSTATE_UINT64_V(env.xcr0, X86CPU, 12),
 826         VMSTATE_UINT64_V(env.xstate_bv, X86CPU, 12),
 827         VMSTATE_YMMH_REGS_VARS(env.xmm_regs, X86CPU, 0, 12),
 828         VMSTATE_END_OF_LIST()
 829         /* The above list is not sorted /wrt version numbers, watch out! */
 830     },
 831     .subsections = (const VMStateDescription*[]) {
 832         &vmstate_async_pf_msr,
 833         &vmstate_pv_eoi_msr,
 834         &vmstate_steal_time_msr,
 835         &vmstate_fpop_ip_dp,
 836         &vmstate_msr_tsc_adjust,
 837         &vmstate_msr_tscdeadline,
 838         &vmstate_msr_ia32_misc_enable,
 839         &vmstate_msr_ia32_feature_control,
 840         &vmstate_msr_architectural_pmu,
 841         &vmstate_mpx,
 842         &vmstate_msr_hypercall_hypercall,
 843         &vmstate_msr_hyperv_vapic,
 844         &vmstate_msr_hyperv_time,
 845         &vmstate_avx512,
 846         &vmstate_xss,
 847         NULL
 848     }
 849 };