target/i386/machine.c

   1 #include "qemu/osdep.h"
   2 #include "cpu.h"
   3 #include "exec/exec-all.h"
   4 #include "hw/hw.h"
   5 #include "hw/boards.h"
   6 #include "hw/i386/pc.h"
   7 #include "hw/isa/isa.h"
   8 #include "migration/cpu.h"
   9 #include "hyperv.h"
  10
  11 #include "sysemu/kvm.h"
  12 #include "sysemu/tcg.h"
  13
  14 #include "qemu/error-report.h"
  15
  16 static const VMStateDescription vmstate_segment = {
  17     .name = "segment",
  18     .version_id = 1,
  19     .minimum_version_id = 1,
  20     .fields = (VMStateField[]) {
  21         VMSTATE_UINT32(selector, SegmentCache),
  22         VMSTATE_UINTTL(base, SegmentCache),
  23         VMSTATE_UINT32(limit, SegmentCache),
  24         VMSTATE_UINT32(flags, SegmentCache),
  25         VMSTATE_END_OF_LIST()
  26     }
  27 };
  28
  29 #define VMSTATE_SEGMENT(_field, _state) {                            \
  30     .name       = (stringify(_field)),                               \
  31     .size       = sizeof(SegmentCache),                              \
  32     .vmsd       = &vmstate_segment,                                  \
  33     .flags      = VMS_STRUCT,                                        \
  34     .offset     = offsetof(_state, _field)                           \
  35             + type_check(SegmentCache,typeof_field(_state, _field))  \
  36 }
  37
  38 #define VMSTATE_SEGMENT_ARRAY(_field, _state, _n)                    \
  39     VMSTATE_STRUCT_ARRAY(_field, _state, _n, 0, vmstate_segment, SegmentCache)
  40
  41 static const VMStateDescription vmstate_xmm_reg = {
  42     .name = "xmm_reg",
  43     .version_id = 1,
  44     .minimum_version_id = 1,
  45     .fields = (VMStateField[]) {
  46         VMSTATE_UINT64(ZMM_Q(0), ZMMReg),
  47         VMSTATE_UINT64(ZMM_Q(1), ZMMReg),
  48         VMSTATE_END_OF_LIST()
  49     }
  50 };
  51
  52 #define VMSTATE_XMM_REGS(_field, _state, _start)                         \
  53     VMSTATE_STRUCT_SUB_ARRAY(_field, _state, _start, CPU_NB_REGS, 0,     \
  54                              vmstate_xmm_reg, ZMMReg)
  55
  56 /* YMMH format is the same as XMM, but for bits 128-255 */
  57 static const VMStateDescription vmstate_ymmh_reg = {
  58     .name = "ymmh_reg",
  59     .version_id = 1,
  60     .minimum_version_id = 1,
  61     .fields = (VMStateField[]) {
  62         VMSTATE_UINT64(ZMM_Q(2), ZMMReg),
  63         VMSTATE_UINT64(ZMM_Q(3), ZMMReg),
  64         VMSTATE_END_OF_LIST()
  65     }
  66 };
  67
  68 #define VMSTATE_YMMH_REGS_VARS(_field, _state, _start, _v)               \
  69     VMSTATE_STRUCT_SUB_ARRAY(_field, _state, _start, CPU_NB_REGS, _v,    \
  70                              vmstate_ymmh_reg, ZMMReg)
  71
  72 static const VMStateDescription vmstate_zmmh_reg = {
  73     .name = "zmmh_reg",
  74     .version_id = 1,
  75     .minimum_version_id = 1,
  76     .fields = (VMStateField[]) {
  77         VMSTATE_UINT64(ZMM_Q(4), ZMMReg),
  78         VMSTATE_UINT64(ZMM_Q(5), ZMMReg),
  79         VMSTATE_UINT64(ZMM_Q(6), ZMMReg),
  80         VMSTATE_UINT64(ZMM_Q(7), ZMMReg),
  81         VMSTATE_END_OF_LIST()
  82     }
  83 };
  84
  85 #define VMSTATE_ZMMH_REGS_VARS(_field, _state, _start)                   \
  86     VMSTATE_STRUCT_SUB_ARRAY(_field, _state, _start, CPU_NB_REGS, 0,     \
  87                              vmstate_zmmh_reg, ZMMReg)
  88
  89 #ifdef TARGET_X86_64
  90 static const VMStateDescription vmstate_hi16_zmm_reg = {
  91     .name = "hi16_zmm_reg",
  92     .version_id = 1,
  93     .minimum_version_id = 1,
  94     .fields = (VMStateField[]) {
  95         VMSTATE_UINT64(ZMM_Q(0), ZMMReg),
  96         VMSTATE_UINT64(ZMM_Q(1), ZMMReg),
  97         VMSTATE_UINT64(ZMM_Q(2), ZMMReg),
  98         VMSTATE_UINT64(ZMM_Q(3), ZMMReg),
  99         VMSTATE_UINT64(ZMM_Q(4), ZMMReg),
 100         VMSTATE_UINT64(ZMM_Q(5), ZMMReg),
 101         VMSTATE_UINT64(ZMM_Q(6), ZMMReg),
 102         VMSTATE_UINT64(ZMM_Q(7), ZMMReg),
 103         VMSTATE_END_OF_LIST()
 104     }
 105 };
 106
 107 #define VMSTATE_Hi16_ZMM_REGS_VARS(_field, _state, _start)               \
 108     VMSTATE_STRUCT_SUB_ARRAY(_field, _state, _start, CPU_NB_REGS, 0,     \
 109                              vmstate_hi16_zmm_reg, ZMMReg)
 110 #endif
 111
 112 static const VMStateDescription vmstate_bnd_regs = {
 113     .name = "bnd_regs",
 114     .version_id = 1,
 115     .minimum_version_id = 1,
 116     .fields = (VMStateField[]) {
 117         VMSTATE_UINT64(lb, BNDReg),
 118         VMSTATE_UINT64(ub, BNDReg),
 119         VMSTATE_END_OF_LIST()
 120     }
 121 };
 122
 123 #define VMSTATE_BND_REGS(_field, _state, _n)          \
 124     VMSTATE_STRUCT_ARRAY(_field, _state, _n, 0, vmstate_bnd_regs, BNDReg)
 125
 126 static const VMStateDescription vmstate_mtrr_var = {
 127     .name = "mtrr_var",
 128     .version_id = 1,
 129     .minimum_version_id = 1,
 130     .fields = (VMStateField[]) {
 131         VMSTATE_UINT64(base, MTRRVar),
 132         VMSTATE_UINT64(mask, MTRRVar),
 133         VMSTATE_END_OF_LIST()
 134     }
 135 };
 136
 137 #define VMSTATE_MTRR_VARS(_field, _state, _n, _v)                    \
 138     VMSTATE_STRUCT_ARRAY(_field, _state, _n, _v, vmstate_mtrr_var, MTRRVar)
 139
 140 typedef struct x86_FPReg_tmp {
 141     FPReg *parent;
 142     uint64_t tmp_mant;
 143     uint16_t tmp_exp;
 144 } x86_FPReg_tmp;
 145
 146 static void cpu_get_fp80(uint64_t *pmant, uint16_t *pexp, floatx80 f)
 147 {
 148     CPU_LDoubleU temp;
 149
 150     temp.d = f;
 151     *pmant = temp.l.lower;
 152     *pexp = temp.l.upper;
 153 }
 154
 155 static floatx80 cpu_set_fp80(uint64_t mant, uint16_t upper)
 156 {
 157     CPU_LDoubleU temp;
 158
 159     temp.l.upper = upper;
 160     temp.l.lower = mant;
 161     return temp.d;
 162 }
 163
 164 static int fpreg_pre_save(void *opaque)
 165 {
 166     x86_FPReg_tmp *tmp = opaque;
 167
 168     /* we save the real CPU data (in case of MMX usage only 'mant'
 169        contains the MMX register */
 170     cpu_get_fp80(&tmp->tmp_mant, &tmp->tmp_exp, tmp->parent->d);
 171
 172     return 0;
 173 }
 174
 175 static int fpreg_post_load(void *opaque, int version)
 176 {
 177     x86_FPReg_tmp *tmp = opaque;
 178
 179     tmp->parent->d = cpu_set_fp80(tmp->tmp_mant, tmp->tmp_exp);
 180     return 0;
 181 }
 182
 183 static const VMStateDescription vmstate_fpreg_tmp = {
 184     .name = "fpreg_tmp",
 185     .post_load = fpreg_post_load,
 186     .pre_save  = fpreg_pre_save,
 187     .fields = (VMStateField[]) {
 188         VMSTATE_UINT64(tmp_mant, x86_FPReg_tmp),
 189         VMSTATE_UINT16(tmp_exp, x86_FPReg_tmp),
 190         VMSTATE_END_OF_LIST()
 191     }
 192 };
 193
 194 static const VMStateDescription vmstate_fpreg = {
 195     .name = "fpreg",
 196     .fields = (VMStateField[]) {
 197         VMSTATE_WITH_TMP(FPReg, x86_FPReg_tmp, vmstate_fpreg_tmp),
 198         VMSTATE_END_OF_LIST()
 199     }
 200 };
 201
 202 static int cpu_pre_save(void *opaque)
 203 {
 204     X86CPU *cpu = opaque;
 205     CPUX86State *env = &cpu->env;
 206     int i;
 207
 208     /* FPU */
 209     env->fpus_vmstate = (env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11;
 210     env->fptag_vmstate = 0;
 211     for(i = 0; i < 8; i++) {
 212         env->fptag_vmstate |= ((!env->fptags[i]) << i);
 213     }
 214
 215     env->fpregs_format_vmstate = 0;
 216
 217     /*
 218      * Real mode guest segments register DPL should be zero.
 219      * Older KVM version were setting it wrongly.
 220      * Fixing it will allow live migration to host with unrestricted guest
 221      * support (otherwise the migration will fail with invalid guest state
 222      * error).
 223      */
 224     if (!(env->cr[0] & CR0_PE_MASK) &&
 225         (env->segs[R_CS].flags >> DESC_DPL_SHIFT & 3) != 0) {
 226         env->segs[R_CS].flags &= ~(env->segs[R_CS].flags & DESC_DPL_MASK);
 227         env->segs[R_DS].flags &= ~(env->segs[R_DS].flags & DESC_DPL_MASK);
 228         env->segs[R_ES].flags &= ~(env->segs[R_ES].flags & DESC_DPL_MASK);
 229         env->segs[R_FS].flags &= ~(env->segs[R_FS].flags & DESC_DPL_MASK);
 230         env->segs[R_GS].flags &= ~(env->segs[R_GS].flags & DESC_DPL_MASK);
 231         env->segs[R_SS].flags &= ~(env->segs[R_SS].flags & DESC_DPL_MASK);
 232     }
 233
 234     return 0;
 235 }
 236
 237 static int cpu_post_load(void *opaque, int version_id)
 238 {
 239     X86CPU *cpu = opaque;
 240     CPUState *cs = CPU(cpu);
 241     CPUX86State *env = &cpu->env;
 242     int i;
 243
 244     if (env->tsc_khz && env->user_tsc_khz &&
 245         env->tsc_khz != env->user_tsc_khz) {
 246         error_report("Mismatch between user-specified TSC frequency and "
 247                      "migrated TSC frequency");
 248         return -EINVAL;
 249     }
 250
 251     if (env->fpregs_format_vmstate) {
 252         error_report("Unsupported old non-softfloat CPU state");
 253         return -EINVAL;
 254     }
 255     /*
 256      * Real mode guest segments register DPL should be zero.
 257      * Older KVM version were setting it wrongly.
 258      * Fixing it will allow live migration from such host that don't have
 259      * restricted guest support to a host with unrestricted guest support
 260      * (otherwise the migration will fail with invalid guest state
 261      * error).
 262      */
 263     if (!(env->cr[0] & CR0_PE_MASK) &&
 264         (env->segs[R_CS].flags >> DESC_DPL_SHIFT & 3) != 0) {
 265         env->segs[R_CS].flags &= ~(env->segs[R_CS].flags & DESC_DPL_MASK);
 266         env->segs[R_DS].flags &= ~(env->segs[R_DS].flags & DESC_DPL_MASK);
 267         env->segs[R_ES].flags &= ~(env->segs[R_ES].flags & DESC_DPL_MASK);
 268         env->segs[R_FS].flags &= ~(env->segs[R_FS].flags & DESC_DPL_MASK);
 269         env->segs[R_GS].flags &= ~(env->segs[R_GS].flags & DESC_DPL_MASK);
 270         env->segs[R_SS].flags &= ~(env->segs[R_SS].flags & DESC_DPL_MASK);
 271     }
 272
 273     /* Older versions of QEMU incorrectly used CS.DPL as the CPL when
 274      * running under KVM.  This is wrong for conforming code segments.
 275      * Luckily, in our implementation the CPL field of hflags is redundant
 276      * and we can get the right value from the SS descriptor privilege level.
 277      */
 278     env->hflags &= ~HF_CPL_MASK;
 279     env->hflags |= (env->segs[R_SS].flags >> DESC_DPL_SHIFT) & HF_CPL_MASK;
 280
 281     env->fpstt = (env->fpus_vmstate >> 11) & 7;
 282     env->fpus = env->fpus_vmstate & ~0x3800;
 283     env->fptag_vmstate ^= 0xff;
 284     for(i = 0; i < 8; i++) {
 285         env->fptags[i] = (env->fptag_vmstate >> i) & 1;
 286     }
 287     if (tcg_enabled()) {
 288         target_ulong dr7;
 289         update_fp_status(env);
 290         update_mxcsr_status(env);
 291
 292         cpu_breakpoint_remove_all(cs, BP_CPU);
 293         cpu_watchpoint_remove_all(cs, BP_CPU);
 294
 295         /* Indicate all breakpoints disabled, as they are, then
 296            let the helper re-enable them.  */
 297         dr7 = env->dr[7];
 298         env->dr[7] = dr7 & ~(DR7_GLOBAL_BP_MASK | DR7_LOCAL_BP_MASK);
 299         cpu_x86_update_dr7(env, dr7);
 300     }
 301     tlb_flush(cs);
 302     return 0;
 303 }
 304
 305 static bool async_pf_msr_needed(void *opaque)
 306 {
 307     X86CPU *cpu = opaque;
 308
 309     return cpu->env.async_pf_en_msr != 0;
 310 }
 311
 312 static bool pv_eoi_msr_needed(void *opaque)
 313 {
 314     X86CPU *cpu = opaque;
 315
 316     return cpu->env.pv_eoi_en_msr != 0;
 317 }
 318
 319 static bool steal_time_msr_needed(void *opaque)
 320 {
 321     X86CPU *cpu = opaque;
 322
 323     return cpu->env.steal_time_msr != 0;
 324 }
 325
 326 static const VMStateDescription vmstate_steal_time_msr = {
 327     .name = "cpu/steal_time_msr",
 328     .version_id = 1,
 329     .minimum_version_id = 1,
 330     .needed = steal_time_msr_needed,
 331     .fields = (VMStateField[]) {
 332         VMSTATE_UINT64(env.steal_time_msr, X86CPU),
 333         VMSTATE_END_OF_LIST()
 334     }
 335 };
 336
 337 static const VMStateDescription vmstate_async_pf_msr = {
 338     .name = "cpu/async_pf_msr",
 339     .version_id = 1,
 340     .minimum_version_id = 1,
 341     .needed = async_pf_msr_needed,
 342     .fields = (VMStateField[]) {
 343         VMSTATE_UINT64(env.async_pf_en_msr, X86CPU),
 344         VMSTATE_END_OF_LIST()
 345     }
 346 };
 347
 348 static const VMStateDescription vmstate_pv_eoi_msr = {
 349     .name = "cpu/async_pv_eoi_msr",
 350     .version_id = 1,
 351     .minimum_version_id = 1,
 352     .needed = pv_eoi_msr_needed,
 353     .fields = (VMStateField[]) {
 354         VMSTATE_UINT64(env.pv_eoi_en_msr, X86CPU),
 355         VMSTATE_END_OF_LIST()
 356     }
 357 };
 358
 359 static bool fpop_ip_dp_needed(void *opaque)
 360 {
 361     X86CPU *cpu = opaque;
 362     CPUX86State *env = &cpu->env;
 363
 364     return env->fpop != 0 || env->fpip != 0 || env->fpdp != 0;
 365 }
 366
 367 static const VMStateDescription vmstate_fpop_ip_dp = {
 368     .name = "cpu/fpop_ip_dp",
 369     .version_id = 1,
 370     .minimum_version_id = 1,
 371     .needed = fpop_ip_dp_needed,
 372     .fields = (VMStateField[]) {
 373         VMSTATE_UINT16(env.fpop, X86CPU),
 374         VMSTATE_UINT64(env.fpip, X86CPU),
 375         VMSTATE_UINT64(env.fpdp, X86CPU),
 376         VMSTATE_END_OF_LIST()
 377     }
 378 };
 379
 380 static bool tsc_adjust_needed(void *opaque)
 381 {
 382     X86CPU *cpu = opaque;
 383     CPUX86State *env = &cpu->env;
 384
 385     return env->tsc_adjust != 0;
 386 }
 387
 388 static const VMStateDescription vmstate_msr_tsc_adjust = {
 389     .name = "cpu/msr_tsc_adjust",
 390     .version_id = 1,
 391     .minimum_version_id = 1,
 392     .needed = tsc_adjust_needed,
 393     .fields = (VMStateField[]) {
 394         VMSTATE_UINT64(env.tsc_adjust, X86CPU),
 395         VMSTATE_END_OF_LIST()
 396     }
 397 };
 398
 399 static bool msr_smi_count_needed(void *opaque)
 400 {
 401     X86CPU *cpu = opaque;
 402     CPUX86State *env = &cpu->env;
 403
 404     return cpu->migrate_smi_count && env->msr_smi_count != 0;
 405 }
 406
 407 static const VMStateDescription vmstate_msr_smi_count = {
 408     .name = "cpu/msr_smi_count",
 409     .version_id = 1,
 410     .minimum_version_id = 1,
 411     .needed = msr_smi_count_needed,
 412     .fields = (VMStateField[]) {
 413         VMSTATE_UINT64(env.msr_smi_count, X86CPU),
 414         VMSTATE_END_OF_LIST()
 415     }
 416 };
 417
 418 static bool tscdeadline_needed(void *opaque)
 419 {
 420     X86CPU *cpu = opaque;
 421     CPUX86State *env = &cpu->env;
 422
 423     return env->tsc_deadline != 0;
 424 }
 425
 426 static const VMStateDescription vmstate_msr_tscdeadline = {
 427     .name = "cpu/msr_tscdeadline",
 428     .version_id = 1,
 429     .minimum_version_id = 1,
 430     .needed = tscdeadline_needed,
 431     .fields = (VMStateField[]) {
 432         VMSTATE_UINT64(env.tsc_deadline, X86CPU),
 433         VMSTATE_END_OF_LIST()
 434     }
 435 };
 436
 437 static bool misc_enable_needed(void *opaque)
 438 {
 439     X86CPU *cpu = opaque;
 440     CPUX86State *env = &cpu->env;
 441
 442     return env->msr_ia32_misc_enable != MSR_IA32_MISC_ENABLE_DEFAULT;
 443 }
 444
 445 static bool feature_control_needed(void *opaque)
 446 {
 447     X86CPU *cpu = opaque;
 448     CPUX86State *env = &cpu->env;
 449
 450     return env->msr_ia32_feature_control != 0;
 451 }
 452
 453 static const VMStateDescription vmstate_msr_ia32_misc_enable = {
 454     .name = "cpu/msr_ia32_misc_enable",
 455     .version_id = 1,
 456     .minimum_version_id = 1,
 457     .needed = misc_enable_needed,
 458     .fields = (VMStateField[]) {
 459         VMSTATE_UINT64(env.msr_ia32_misc_enable, X86CPU),
 460         VMSTATE_END_OF_LIST()
 461     }
 462 };
 463
 464 static const VMStateDescription vmstate_msr_ia32_feature_control = {
 465     .name = "cpu/msr_ia32_feature_control",
 466     .version_id = 1,
 467     .minimum_version_id = 1,
 468     .needed = feature_control_needed,
 469     .fields = (VMStateField[]) {
 470         VMSTATE_UINT64(env.msr_ia32_feature_control, X86CPU),
 471         VMSTATE_END_OF_LIST()
 472     }
 473 };
 474
 475 static bool pmu_enable_needed(void *opaque)
 476 {
 477     X86CPU *cpu = opaque;
 478     CPUX86State *env = &cpu->env;
 479     int i;
 480
 481     if (env->msr_fixed_ctr_ctrl || env->msr_global_ctrl ||
 482         env->msr_global_status || env->msr_global_ovf_ctrl) {
 483         return true;
 484     }
 485     for (i = 0; i < MAX_FIXED_COUNTERS; i++) {
 486         if (env->msr_fixed_counters[i]) {
 487             return true;
 488         }
 489     }
 490     for (i = 0; i < MAX_GP_COUNTERS; i++) {
 491         if (env->msr_gp_counters[i] || env->msr_gp_evtsel[i]) {
 492             return true;
 493         }
 494     }
 495
 496     return false;
 497 }
 498
 499 static const VMStateDescription vmstate_msr_architectural_pmu = {
 500     .name = "cpu/msr_architectural_pmu",
 501     .version_id = 1,
 502     .minimum_version_id = 1,
 503     .needed = pmu_enable_needed,
 504     .fields = (VMStateField[]) {
 505         VMSTATE_UINT64(env.msr_fixed_ctr_ctrl, X86CPU),
 506         VMSTATE_UINT64(env.msr_global_ctrl, X86CPU),
 507         VMSTATE_UINT64(env.msr_global_status, X86CPU),
 508         VMSTATE_UINT64(env.msr_global_ovf_ctrl, X86CPU),
 509         VMSTATE_UINT64_ARRAY(env.msr_fixed_counters, X86CPU, MAX_FIXED_COUNTERS),
 510         VMSTATE_UINT64_ARRAY(env.msr_gp_counters, X86CPU, MAX_GP_COUNTERS),
 511         VMSTATE_UINT64_ARRAY(env.msr_gp_evtsel, X86CPU, MAX_GP_COUNTERS),
 512         VMSTATE_END_OF_LIST()
 513     }
 514 };
 515
 516 static bool mpx_needed(void *opaque)
 517 {
 518     X86CPU *cpu = opaque;
 519     CPUX86State *env = &cpu->env;
 520     unsigned int i;
 521
 522     for (i = 0; i < 4; i++) {
 523         if (env->bnd_regs[i].lb || env->bnd_regs[i].ub) {
 524             return true;
 525         }
 526     }
 527
 528     if (env->bndcs_regs.cfgu || env->bndcs_regs.sts) {
 529         return true;
 530     }
 531
 532     return !!env->msr_bndcfgs;
 533 }
 534
 535 static const VMStateDescription vmstate_mpx = {
 536     .name = "cpu/mpx",
 537     .version_id = 1,
 538     .minimum_version_id = 1,
 539     .needed = mpx_needed,
 540     .fields = (VMStateField[]) {
 541         VMSTATE_BND_REGS(env.bnd_regs, X86CPU, 4),
 542         VMSTATE_UINT64(env.bndcs_regs.cfgu, X86CPU),
 543         VMSTATE_UINT64(env.bndcs_regs.sts, X86CPU),
 544         VMSTATE_UINT64(env.msr_bndcfgs, X86CPU),
 545         VMSTATE_END_OF_LIST()
 546     }
 547 };
 548
 549 static bool hyperv_hypercall_enable_needed(void *opaque)
 550 {
 551     X86CPU *cpu = opaque;
 552     CPUX86State *env = &cpu->env;
 553
 554     return env->msr_hv_hypercall != 0 || env->msr_hv_guest_os_id != 0;
 555 }
 556
 557 static const VMStateDescription vmstate_msr_hypercall_hypercall = {
 558     .name = "cpu/msr_hyperv_hypercall",
 559     .version_id = 1,
 560     .minimum_version_id = 1,
 561     .needed = hyperv_hypercall_enable_needed,
 562     .fields = (VMStateField[]) {
 563         VMSTATE_UINT64(env.msr_hv_guest_os_id, X86CPU),
 564         VMSTATE_UINT64(env.msr_hv_hypercall, X86CPU),
 565         VMSTATE_END_OF_LIST()
 566     }
 567 };
 568
 569 static bool hyperv_vapic_enable_needed(void *opaque)
 570 {
 571     X86CPU *cpu = opaque;
 572     CPUX86State *env = &cpu->env;
 573
 574     return env->msr_hv_vapic != 0;
 575 }
 576
 577 static const VMStateDescription vmstate_msr_hyperv_vapic = {
 578     .name = "cpu/msr_hyperv_vapic",
 579     .version_id = 1,
 580     .minimum_version_id = 1,
 581     .needed = hyperv_vapic_enable_needed,
 582     .fields = (VMStateField[]) {
 583         VMSTATE_UINT64(env.msr_hv_vapic, X86CPU),
 584         VMSTATE_END_OF_LIST()
 585     }
 586 };
 587
 588 static bool hyperv_time_enable_needed(void *opaque)
 589 {
 590     X86CPU *cpu = opaque;
 591     CPUX86State *env = &cpu->env;
 592
 593     return env->msr_hv_tsc != 0;
 594 }
 595
 596 static const VMStateDescription vmstate_msr_hyperv_time = {
 597     .name = "cpu/msr_hyperv_time",
 598     .version_id = 1,
 599     .minimum_version_id = 1,
 600     .needed = hyperv_time_enable_needed,
 601     .fields = (VMStateField[]) {
 602         VMSTATE_UINT64(env.msr_hv_tsc, X86CPU),
 603         VMSTATE_END_OF_LIST()
 604     }
 605 };
 606
 607 static bool hyperv_crash_enable_needed(void *opaque)
 608 {
 609     X86CPU *cpu = opaque;
 610     CPUX86State *env = &cpu->env;
 611     int i;
 612
 613     for (i = 0; i < HV_CRASH_PARAMS; i++) {
 614         if (env->msr_hv_crash_params[i]) {
 615             return true;
 616         }
 617     }
 618     return false;
 619 }
 620
 621 static const VMStateDescription vmstate_msr_hyperv_crash = {
 622     .name = "cpu/msr_hyperv_crash",
 623     .version_id = 1,
 624     .minimum_version_id = 1,
 625     .needed = hyperv_crash_enable_needed,
 626     .fields = (VMStateField[]) {
 627         VMSTATE_UINT64_ARRAY(env.msr_hv_crash_params, X86CPU, HV_CRASH_PARAMS),
 628         VMSTATE_END_OF_LIST()
 629     }
 630 };
 631
 632 static bool hyperv_runtime_enable_needed(void *opaque)
 633 {
 634     X86CPU *cpu = opaque;
 635     CPUX86State *env = &cpu->env;
 636
 637     if (!cpu->hyperv_runtime) {
 638         return false;
 639     }
 640
 641     return env->msr_hv_runtime != 0;
 642 }
 643
 644 static const VMStateDescription vmstate_msr_hyperv_runtime = {
 645     .name = "cpu/msr_hyperv_runtime",
 646     .version_id = 1,
 647     .minimum_version_id = 1,
 648     .needed = hyperv_runtime_enable_needed,
 649     .fields = (VMStateField[]) {
 650         VMSTATE_UINT64(env.msr_hv_runtime, X86CPU),
 651         VMSTATE_END_OF_LIST()
 652     }
 653 };
 654
 655 static bool hyperv_synic_enable_needed(void *opaque)
 656 {
 657     X86CPU *cpu = opaque;
 658     CPUX86State *env = &cpu->env;
 659     int i;
 660
 661     if (env->msr_hv_synic_control != 0 ||
 662         env->msr_hv_synic_evt_page != 0 ||
 663         env->msr_hv_synic_msg_page != 0) {
 664         return true;
 665     }
 666
 667     for (i = 0; i < ARRAY_SIZE(env->msr_hv_synic_sint); i++) {
 668         if (env->msr_hv_synic_sint[i] != 0) {
 669             return true;
 670         }
 671     }
 672
 673     return false;
 674 }
 675
 676 static int hyperv_synic_post_load(void *opaque, int version_id)
 677 {
 678     X86CPU *cpu = opaque;
 679     hyperv_x86_synic_update(cpu);
 680     return 0;
 681 }
 682
 683 static const VMStateDescription vmstate_msr_hyperv_synic = {
 684     .name = "cpu/msr_hyperv_synic",
 685     .version_id = 1,
 686     .minimum_version_id = 1,
 687     .needed = hyperv_synic_enable_needed,
 688     .post_load = hyperv_synic_post_load,
 689     .fields = (VMStateField[]) {
 690         VMSTATE_UINT64(env.msr_hv_synic_control, X86CPU),
 691         VMSTATE_UINT64(env.msr_hv_synic_evt_page, X86CPU),
 692         VMSTATE_UINT64(env.msr_hv_synic_msg_page, X86CPU),
 693         VMSTATE_UINT64_ARRAY(env.msr_hv_synic_sint, X86CPU, HV_SINT_COUNT),
 694         VMSTATE_END_OF_LIST()
 695     }
 696 };
 697
 698 static bool hyperv_stimer_enable_needed(void *opaque)
 699 {
 700     X86CPU *cpu = opaque;
 701     CPUX86State *env = &cpu->env;
 702     int i;
 703
 704     for (i = 0; i < ARRAY_SIZE(env->msr_hv_stimer_config); i++) {
 705         if (env->msr_hv_stimer_config[i] || env->msr_hv_stimer_count[i]) {
 706             return true;
 707         }
 708     }
 709     return false;
 710 }
 711
 712 static const VMStateDescription vmstate_msr_hyperv_stimer = {
 713     .name = "cpu/msr_hyperv_stimer",
 714     .version_id = 1,
 715     .minimum_version_id = 1,
 716     .needed = hyperv_stimer_enable_needed,
 717     .fields = (VMStateField[]) {
 718         VMSTATE_UINT64_ARRAY(env.msr_hv_stimer_config, X86CPU,
 719                              HV_STIMER_COUNT),
 720         VMSTATE_UINT64_ARRAY(env.msr_hv_stimer_count, X86CPU, HV_STIMER_COUNT),
 721         VMSTATE_END_OF_LIST()
 722     }
 723 };
 724
 725 static bool hyperv_reenlightenment_enable_needed(void *opaque)
 726 {
 727     X86CPU *cpu = opaque;
 728     CPUX86State *env = &cpu->env;
 729
 730     return env->msr_hv_reenlightenment_control != 0 ||
 731         env->msr_hv_tsc_emulation_control != 0 ||
 732         env->msr_hv_tsc_emulation_status != 0;
 733 }
 734
 735 static const VMStateDescription vmstate_msr_hyperv_reenlightenment = {
 736     .name = "cpu/msr_hyperv_reenlightenment",
 737     .version_id = 1,
 738     .minimum_version_id = 1,
 739     .needed = hyperv_reenlightenment_enable_needed,
 740     .fields = (VMStateField[]) {
 741         VMSTATE_UINT64(env.msr_hv_reenlightenment_control, X86CPU),
 742         VMSTATE_UINT64(env.msr_hv_tsc_emulation_control, X86CPU),
 743         VMSTATE_UINT64(env.msr_hv_tsc_emulation_status, X86CPU),
 744         VMSTATE_END_OF_LIST()
 745     }
 746 };
 747
 748 static bool avx512_needed(void *opaque)
 749 {
 750     X86CPU *cpu = opaque;
 751     CPUX86State *env = &cpu->env;
 752     unsigned int i;
 753
 754     for (i = 0; i < NB_OPMASK_REGS; i++) {
 755         if (env->opmask_regs[i]) {
 756             return true;
 757         }
 758     }
 759
 760     for (i = 0; i < CPU_NB_REGS; i++) {
 761 #define ENV_XMM(reg, field) (env->xmm_regs[reg].ZMM_Q(field))
 762         if (ENV_XMM(i, 4) || ENV_XMM(i, 6) ||
 763             ENV_XMM(i, 5) || ENV_XMM(i, 7)) {
 764             return true;
 765         }
 766 #ifdef TARGET_X86_64
 767         if (ENV_XMM(i+16, 0) || ENV_XMM(i+16, 1) ||
 768             ENV_XMM(i+16, 2) || ENV_XMM(i+16, 3) ||
 769             ENV_XMM(i+16, 4) || ENV_XMM(i+16, 5) ||
 770             ENV_XMM(i+16, 6) || ENV_XMM(i+16, 7)) {
 771             return true;
 772         }
 773 #endif
 774     }
 775
 776     return false;
 777 }
 778
 779 static const VMStateDescription vmstate_avx512 = {
 780     .name = "cpu/avx512",
 781     .version_id = 1,
 782     .minimum_version_id = 1,
 783     .needed = avx512_needed,
 784     .fields = (VMStateField[]) {
 785         VMSTATE_UINT64_ARRAY(env.opmask_regs, X86CPU, NB_OPMASK_REGS),
 786         VMSTATE_ZMMH_REGS_VARS(env.xmm_regs, X86CPU, 0),
 787 #ifdef TARGET_X86_64
 788         VMSTATE_Hi16_ZMM_REGS_VARS(env.xmm_regs, X86CPU, 16),
 789 #endif
 790         VMSTATE_END_OF_LIST()
 791     }
 792 };
 793
 794 static bool xss_needed(void *opaque)
 795 {
 796     X86CPU *cpu = opaque;
 797     CPUX86State *env = &cpu->env;
 798
 799     return env->xss != 0;
 800 }
 801
 802 static const VMStateDescription vmstate_xss = {
 803     .name = "cpu/xss",
 804     .version_id = 1,
 805     .minimum_version_id = 1,
 806     .needed = xss_needed,
 807     .fields = (VMStateField[]) {
 808         VMSTATE_UINT64(env.xss, X86CPU),
 809         VMSTATE_END_OF_LIST()
 810     }
 811 };
 812
 813 #ifdef TARGET_X86_64
 814 static bool pkru_needed(void *opaque)
 815 {
 816     X86CPU *cpu = opaque;
 817     CPUX86State *env = &cpu->env;
 818
 819     return env->pkru != 0;
 820 }
 821
 822 static const VMStateDescription vmstate_pkru = {
 823     .name = "cpu/pkru",
 824     .version_id = 1,
 825     .minimum_version_id = 1,
 826     .needed = pkru_needed,
 827     .fields = (VMStateField[]){
 828         VMSTATE_UINT32(env.pkru, X86CPU),
 829         VMSTATE_END_OF_LIST()
 830     }
 831 };
 832 #endif
 833
 834 static bool tsc_khz_needed(void *opaque)
 835 {
 836     X86CPU *cpu = opaque;
 837     CPUX86State *env = &cpu->env;
 838     MachineClass *mc = MACHINE_GET_CLASS(qdev_get_machine());
 839     PCMachineClass *pcmc = PC_MACHINE_CLASS(mc);
 840     return env->tsc_khz && pcmc->save_tsc_khz;
 841 }
 842
 843 static const VMStateDescription vmstate_tsc_khz = {
 844     .name = "cpu/tsc_khz",
 845     .version_id = 1,
 846     .minimum_version_id = 1,
 847     .needed = tsc_khz_needed,
 848     .fields = (VMStateField[]) {
 849         VMSTATE_INT64(env.tsc_khz, X86CPU),
 850         VMSTATE_END_OF_LIST()
 851     }
 852 };
 853
 854 static bool mcg_ext_ctl_needed(void *opaque)
 855 {
 856     X86CPU *cpu = opaque;
 857     CPUX86State *env = &cpu->env;
 858     return cpu->enable_lmce && env->mcg_ext_ctl;
 859 }
 860
 861 static const VMStateDescription vmstate_mcg_ext_ctl = {
 862     .name = "cpu/mcg_ext_ctl",
 863     .version_id = 1,
 864     .minimum_version_id = 1,
 865     .needed = mcg_ext_ctl_needed,
 866     .fields = (VMStateField[]) {
 867         VMSTATE_UINT64(env.mcg_ext_ctl, X86CPU),
 868         VMSTATE_END_OF_LIST()
 869     }
 870 };
 871
 872 static bool spec_ctrl_needed(void *opaque)
 873 {
 874     X86CPU *cpu = opaque;
 875     CPUX86State *env = &cpu->env;
 876
 877     return env->spec_ctrl != 0;
 878 }
 879
 880 static const VMStateDescription vmstate_spec_ctrl = {
 881     .name = "cpu/spec_ctrl",
 882     .version_id = 1,
 883     .minimum_version_id = 1,
 884     .needed = spec_ctrl_needed,
 885     .fields = (VMStateField[]){
 886         VMSTATE_UINT64(env.spec_ctrl, X86CPU),
 887         VMSTATE_END_OF_LIST()
 888     }
 889 };
 890
 891 static bool intel_pt_enable_needed(void *opaque)
 892 {
 893     X86CPU *cpu = opaque;
 894     CPUX86State *env = &cpu->env;
 895     int i;
 896
 897     if (env->msr_rtit_ctrl || env->msr_rtit_status ||
 898         env->msr_rtit_output_base || env->msr_rtit_output_mask ||
 899         env->msr_rtit_cr3_match) {
 900         return true;
 901     }
 902
 903     for (i = 0; i < MAX_RTIT_ADDRS; i++) {
 904         if (env->msr_rtit_addrs[i]) {
 905             return true;
 906         }
 907     }
 908
 909     return false;
 910 }
 911
 912 static const VMStateDescription vmstate_msr_intel_pt = {
 913     .name = "cpu/intel_pt",
 914     .version_id = 1,
 915     .minimum_version_id = 1,
 916     .needed = intel_pt_enable_needed,
 917     .fields = (VMStateField[]) {
 918         VMSTATE_UINT64(env.msr_rtit_ctrl, X86CPU),
 919         VMSTATE_UINT64(env.msr_rtit_status, X86CPU),
 920         VMSTATE_UINT64(env.msr_rtit_output_base, X86CPU),
 921         VMSTATE_UINT64(env.msr_rtit_output_mask, X86CPU),
 922         VMSTATE_UINT64(env.msr_rtit_cr3_match, X86CPU),
 923         VMSTATE_UINT64_ARRAY(env.msr_rtit_addrs, X86CPU, MAX_RTIT_ADDRS),
 924         VMSTATE_END_OF_LIST()
 925     }
 926 };
 927
 928 static bool virt_ssbd_needed(void *opaque)
 929 {
 930     X86CPU *cpu = opaque;
 931     CPUX86State *env = &cpu->env;
 932
 933     return env->virt_ssbd != 0;
 934 }
 935
 936 static const VMStateDescription vmstate_msr_virt_ssbd = {
 937     .name = "cpu/virt_ssbd",
 938     .version_id = 1,
 939     .minimum_version_id = 1,
 940     .needed = virt_ssbd_needed,
 941     .fields = (VMStateField[]){
 942         VMSTATE_UINT64(env.virt_ssbd, X86CPU),
 943         VMSTATE_END_OF_LIST()
 944     }
 945 };
 946
 947 static bool svm_npt_needed(void *opaque)
 948 {
 949     X86CPU *cpu = opaque;
 950     CPUX86State *env = &cpu->env;
 951
 952     return !!(env->hflags2 & HF2_NPT_MASK);
 953 }
 954
 955 static const VMStateDescription vmstate_svm_npt = {
 956     .name = "cpu/svn_npt",
 957     .version_id = 1,
 958     .minimum_version_id = 1,
 959     .needed = svm_npt_needed,
 960     .fields = (VMStateField[]){
 961         VMSTATE_UINT64(env.nested_cr3, X86CPU),
 962         VMSTATE_UINT32(env.nested_pg_mode, X86CPU),
 963         VMSTATE_END_OF_LIST()
 964     }
 965 };
 966
 967 #ifndef TARGET_X86_64
 968 static bool intel_efer32_needed(void *opaque)
 969 {
 970     X86CPU *cpu = opaque;
 971     CPUX86State *env = &cpu->env;
 972
 973     return env->efer != 0;
 974 }
 975
 976 static const VMStateDescription vmstate_efer32 = {
 977     .name = "cpu/efer32",
 978     .version_id = 1,
 979     .minimum_version_id = 1,
 980     .needed = intel_efer32_needed,
 981     .fields = (VMStateField[]) {
 982         VMSTATE_UINT64(env.efer, X86CPU),
 983         VMSTATE_END_OF_LIST()
 984     }
 985 };
 986 #endif
 987
 988 VMStateDescription vmstate_x86_cpu = {
 989     .name = "cpu",
 990     .version_id = 12,
 991     .minimum_version_id = 11,
 992     .pre_save = cpu_pre_save,
 993     .post_load = cpu_post_load,
 994     .fields = (VMStateField[]) {
 995         VMSTATE_UINTTL_ARRAY(env.regs, X86CPU, CPU_NB_REGS),
 996         VMSTATE_UINTTL(env.eip, X86CPU),
 997         VMSTATE_UINTTL(env.eflags, X86CPU),
 998         VMSTATE_UINT32(env.hflags, X86CPU),
 999         /* FPU */
1000         VMSTATE_UINT16(env.fpuc, X86CPU),
1001         VMSTATE_UINT16(env.fpus_vmstate, X86CPU),
1002         VMSTATE_UINT16(env.fptag_vmstate, X86CPU),
1003         VMSTATE_UINT16(env.fpregs_format_vmstate, X86CPU),
1004
1005         VMSTATE_STRUCT_ARRAY(env.fpregs, X86CPU, 8, 0, vmstate_fpreg, FPReg),
1006
1007         VMSTATE_SEGMENT_ARRAY(env.segs, X86CPU, 6),
1008         VMSTATE_SEGMENT(env.ldt, X86CPU),
1009         VMSTATE_SEGMENT(env.tr, X86CPU),
1010         VMSTATE_SEGMENT(env.gdt, X86CPU),
1011         VMSTATE_SEGMENT(env.idt, X86CPU),
1012
1013         VMSTATE_UINT32(env.sysenter_cs, X86CPU),
1014         VMSTATE_UINTTL(env.sysenter_esp, X86CPU),
1015         VMSTATE_UINTTL(env.sysenter_eip, X86CPU),
1016
1017         VMSTATE_UINTTL(env.cr[0], X86CPU),
1018         VMSTATE_UINTTL(env.cr[2], X86CPU),
1019         VMSTATE_UINTTL(env.cr[3], X86CPU),
1020         VMSTATE_UINTTL(env.cr[4], X86CPU),
1021         VMSTATE_UINTTL_ARRAY(env.dr, X86CPU, 8),
1022         /* MMU */
1023         VMSTATE_INT32(env.a20_mask, X86CPU),
1024         /* XMM */
1025         VMSTATE_UINT32(env.mxcsr, X86CPU),
1026         VMSTATE_XMM_REGS(env.xmm_regs, X86CPU, 0),
1027
1028 #ifdef TARGET_X86_64
1029         VMSTATE_UINT64(env.efer, X86CPU),
1030         VMSTATE_UINT64(env.star, X86CPU),
1031         VMSTATE_UINT64(env.lstar, X86CPU),
1032         VMSTATE_UINT64(env.cstar, X86CPU),
1033         VMSTATE_UINT64(env.fmask, X86CPU),
1034         VMSTATE_UINT64(env.kernelgsbase, X86CPU),
1035 #endif
1036         VMSTATE_UINT32(env.smbase, X86CPU),
1037
1038         VMSTATE_UINT64(env.pat, X86CPU),
1039         VMSTATE_UINT32(env.hflags2, X86CPU),
1040
1041         VMSTATE_UINT64(env.vm_hsave, X86CPU),
1042         VMSTATE_UINT64(env.vm_vmcb, X86CPU),
1043         VMSTATE_UINT64(env.tsc_offset, X86CPU),
1044         VMSTATE_UINT64(env.intercept, X86CPU),
1045         VMSTATE_UINT16(env.intercept_cr_read, X86CPU),
1046         VMSTATE_UINT16(env.intercept_cr_write, X86CPU),
1047         VMSTATE_UINT16(env.intercept_dr_read, X86CPU),
1048         VMSTATE_UINT16(env.intercept_dr_write, X86CPU),
1049         VMSTATE_UINT32(env.intercept_exceptions, X86CPU),
1050         VMSTATE_UINT8(env.v_tpr, X86CPU),
1051         /* MTRRs */
1052         VMSTATE_UINT64_ARRAY(env.mtrr_fixed, X86CPU, 11),
1053         VMSTATE_UINT64(env.mtrr_deftype, X86CPU),
1054         VMSTATE_MTRR_VARS(env.mtrr_var, X86CPU, MSR_MTRRcap_VCNT, 8),
1055         /* KVM-related states */
1056         VMSTATE_INT32(env.interrupt_injected, X86CPU),
1057         VMSTATE_UINT32(env.mp_state, X86CPU),
1058         VMSTATE_UINT64(env.tsc, X86CPU),
1059         VMSTATE_INT32(env.exception_injected, X86CPU),
1060         VMSTATE_UINT8(env.soft_interrupt, X86CPU),
1061         VMSTATE_UINT8(env.nmi_injected, X86CPU),
1062         VMSTATE_UINT8(env.nmi_pending, X86CPU),
1063         VMSTATE_UINT8(env.has_error_code, X86CPU),
1064         VMSTATE_UINT32(env.sipi_vector, X86CPU),
1065         /* MCE */
1066         VMSTATE_UINT64(env.mcg_cap, X86CPU),
1067         VMSTATE_UINT64(env.mcg_status, X86CPU),
1068         VMSTATE_UINT64(env.mcg_ctl, X86CPU),
1069         VMSTATE_UINT64_ARRAY(env.mce_banks, X86CPU, MCE_BANKS_DEF * 4),
1070         /* rdtscp */
1071         VMSTATE_UINT64(env.tsc_aux, X86CPU),
1072         /* KVM pvclock msr */
1073         VMSTATE_UINT64(env.system_time_msr, X86CPU),
1074         VMSTATE_UINT64(env.wall_clock_msr, X86CPU),
1075         /* XSAVE related fields */
1076         VMSTATE_UINT64_V(env.xcr0, X86CPU, 12),
1077         VMSTATE_UINT64_V(env.xstate_bv, X86CPU, 12),
1078         VMSTATE_YMMH_REGS_VARS(env.xmm_regs, X86CPU, 0, 12),
1079         VMSTATE_END_OF_LIST()
1080         /* The above list is not sorted /wrt version numbers, watch out! */
1081     },
1082     .subsections = (const VMStateDescription*[]) {
1083         &vmstate_async_pf_msr,
1084         &vmstate_pv_eoi_msr,
1085         &vmstate_steal_time_msr,
1086         &vmstate_fpop_ip_dp,
1087         &vmstate_msr_tsc_adjust,
1088         &vmstate_msr_tscdeadline,
1089         &vmstate_msr_ia32_misc_enable,
1090         &vmstate_msr_ia32_feature_control,
1091         &vmstate_msr_architectural_pmu,
1092         &vmstate_mpx,
1093         &vmstate_msr_hypercall_hypercall,
1094         &vmstate_msr_hyperv_vapic,
1095         &vmstate_msr_hyperv_time,
1096         &vmstate_msr_hyperv_crash,
1097         &vmstate_msr_hyperv_runtime,
1098         &vmstate_msr_hyperv_synic,
1099         &vmstate_msr_hyperv_stimer,
1100         &vmstate_msr_hyperv_reenlightenment,
1101         &vmstate_avx512,
1102         &vmstate_xss,
1103         &vmstate_tsc_khz,
1104         &vmstate_msr_smi_count,
1105 #ifdef TARGET_X86_64
1106         &vmstate_pkru,
1107 #endif
1108         &vmstate_spec_ctrl,
1109         &vmstate_mcg_ext_ctl,
1110         &vmstate_msr_intel_pt,
1111         &vmstate_msr_virt_ssbd,
1112         &vmstate_svm_npt,
1113 #ifndef TARGET_X86_64
1114         &vmstate_efer32,
1115 #endif
1116         NULL
1117     }
1118 };