1 /* 2 * QEMU Windows Hypervisor Platform accelerator (WHPX) 3 * 4 * Copyright Microsoft Corp. 2017 5 * 6 * This work is licensed under the terms of the GNU GPL, version 2 or later. 7 * See the COPYING file in the top-level directory. 8 * 9 */ 10 11 #include "qemu/osdep.h" 12 #include "cpu.h" 13 #include "exec/address-spaces.h" 14 #include "exec/ioport.h" 15 #include "qemu-common.h" 16 #include "qemu/accel.h" 17 #include "sysemu/whpx.h" 18 #include "sysemu/cpus.h" 19 #include "sysemu/runstate.h" 20 #include "qemu/main-loop.h" 21 #include "hw/boards.h" 22 #include "hw/i386/ioapic.h" 23 #include "hw/i386/apic_internal.h" 24 #include "qemu/error-report.h" 25 #include "qapi/error.h" 26 #include "qapi/qapi-types-common.h" 27 #include "qapi/qapi-visit-common.h" 28 #include "migration/blocker.h" 29 #include <winerror.h> 30 31 #include "whpx-internal.h" 32 #include "whpx-accel-ops.h" 33 34 #include <WinHvPlatform.h> 35 #include <WinHvEmulation.h> 36 37 #define HYPERV_APIC_BUS_FREQUENCY (200000000ULL) 38 39 static const WHV_REGISTER_NAME whpx_register_names[] = { 40 41 /* X64 General purpose registers */ 42 WHvX64RegisterRax, 43 WHvX64RegisterRcx, 44 WHvX64RegisterRdx, 45 WHvX64RegisterRbx, 46 WHvX64RegisterRsp, 47 WHvX64RegisterRbp, 48 WHvX64RegisterRsi, 49 WHvX64RegisterRdi, 50 WHvX64RegisterR8, 51 WHvX64RegisterR9, 52 WHvX64RegisterR10, 53 WHvX64RegisterR11, 54 WHvX64RegisterR12, 55 WHvX64RegisterR13, 56 WHvX64RegisterR14, 57 WHvX64RegisterR15, 58 WHvX64RegisterRip, 59 WHvX64RegisterRflags, 60 61 /* X64 Segment registers */ 62 WHvX64RegisterEs, 63 WHvX64RegisterCs, 64 WHvX64RegisterSs, 65 WHvX64RegisterDs, 66 WHvX64RegisterFs, 67 WHvX64RegisterGs, 68 WHvX64RegisterLdtr, 69 WHvX64RegisterTr, 70 71 /* X64 Table registers */ 72 WHvX64RegisterIdtr, 73 WHvX64RegisterGdtr, 74 75 /* X64 Control Registers */ 76 WHvX64RegisterCr0, 77 WHvX64RegisterCr2, 78 WHvX64RegisterCr3, 79 WHvX64RegisterCr4, 80 WHvX64RegisterCr8, 81 82 /* X64 Debug Registers */ 83 /* 84 * WHvX64RegisterDr0, 85 * WHvX64RegisterDr1, 86 * WHvX64RegisterDr2, 87 * WHvX64RegisterDr3, 88 * WHvX64RegisterDr6, 89 * WHvX64RegisterDr7, 90 */ 91 92 /* X64 Floating Point and Vector Registers */ 93 WHvX64RegisterXmm0, 94 WHvX64RegisterXmm1, 95 WHvX64RegisterXmm2, 96 WHvX64RegisterXmm3, 97 WHvX64RegisterXmm4, 98 WHvX64RegisterXmm5, 99 WHvX64RegisterXmm6, 100 WHvX64RegisterXmm7, 101 WHvX64RegisterXmm8, 102 WHvX64RegisterXmm9, 103 WHvX64RegisterXmm10, 104 WHvX64RegisterXmm11, 105 WHvX64RegisterXmm12, 106 WHvX64RegisterXmm13, 107 WHvX64RegisterXmm14, 108 WHvX64RegisterXmm15, 109 WHvX64RegisterFpMmx0, 110 WHvX64RegisterFpMmx1, 111 WHvX64RegisterFpMmx2, 112 WHvX64RegisterFpMmx3, 113 WHvX64RegisterFpMmx4, 114 WHvX64RegisterFpMmx5, 115 WHvX64RegisterFpMmx6, 116 WHvX64RegisterFpMmx7, 117 WHvX64RegisterFpControlStatus, 118 WHvX64RegisterXmmControlStatus, 119 120 /* X64 MSRs */ 121 WHvX64RegisterEfer, 122 #ifdef TARGET_X86_64 123 WHvX64RegisterKernelGsBase, 124 #endif 125 WHvX64RegisterApicBase, 126 /* WHvX64RegisterPat, */ 127 WHvX64RegisterSysenterCs, 128 WHvX64RegisterSysenterEip, 129 WHvX64RegisterSysenterEsp, 130 WHvX64RegisterStar, 131 #ifdef TARGET_X86_64 132 WHvX64RegisterLstar, 133 WHvX64RegisterCstar, 134 WHvX64RegisterSfmask, 135 #endif 136 137 /* Interrupt / Event Registers */ 138 /* 139 * WHvRegisterPendingInterruption, 140 * WHvRegisterInterruptState, 141 * WHvRegisterPendingEvent0, 142 * WHvRegisterPendingEvent1 143 * WHvX64RegisterDeliverabilityNotifications, 144 */ 145 }; 146 147 struct whpx_register_set { 148 WHV_REGISTER_VALUE values[RTL_NUMBER_OF(whpx_register_names)]; 149 }; 150 151 struct whpx_vcpu { 152 WHV_EMULATOR_HANDLE emulator; 153 bool window_registered; 154 bool interruptable; 155 bool ready_for_pic_interrupt; 156 uint64_t tpr; 157 uint64_t apic_base; 158 bool interruption_pending; 159 160 /* Must be the last field as it may have a tail */ 161 WHV_RUN_VP_EXIT_CONTEXT exit_ctx; 162 }; 163 164 static bool whpx_allowed; 165 static bool whp_dispatch_initialized; 166 static HMODULE hWinHvPlatform, hWinHvEmulation; 167 static uint32_t max_vcpu_index; 168 struct whpx_state whpx_global; 169 struct WHPDispatch whp_dispatch; 170 171 172 /* 173 * VP support 174 */ 175 176 static struct whpx_vcpu *get_whpx_vcpu(CPUState *cpu) 177 { 178 return (struct whpx_vcpu *)cpu->hax_vcpu; 179 } 180 181 static WHV_X64_SEGMENT_REGISTER whpx_seg_q2h(const SegmentCache *qs, int v86, 182 int r86) 183 { 184 WHV_X64_SEGMENT_REGISTER hs; 185 unsigned flags = qs->flags; 186 187 hs.Base = qs->base; 188 hs.Limit = qs->limit; 189 hs.Selector = qs->selector; 190 191 if (v86) { 192 hs.Attributes = 0; 193 hs.SegmentType = 3; 194 hs.Present = 1; 195 hs.DescriptorPrivilegeLevel = 3; 196 hs.NonSystemSegment = 1; 197 198 } else { 199 hs.Attributes = (flags >> DESC_TYPE_SHIFT); 200 201 if (r86) { 202 /* hs.Base &= 0xfffff; */ 203 } 204 } 205 206 return hs; 207 } 208 209 static SegmentCache whpx_seg_h2q(const WHV_X64_SEGMENT_REGISTER *hs) 210 { 211 SegmentCache qs; 212 213 qs.base = hs->Base; 214 qs.limit = hs->Limit; 215 qs.selector = hs->Selector; 216 217 qs.flags = ((uint32_t)hs->Attributes) << DESC_TYPE_SHIFT; 218 219 return qs; 220 } 221 222 static int whpx_set_tsc(CPUState *cpu) 223 { 224 struct CPUX86State *env = (CPUArchState *)(cpu->env_ptr); 225 WHV_REGISTER_NAME tsc_reg = WHvX64RegisterTsc; 226 WHV_REGISTER_VALUE tsc_val; 227 HRESULT hr; 228 struct whpx_state *whpx = &whpx_global; 229 230 /* 231 * Suspend the partition prior to setting the TSC to reduce the variance 232 * in TSC across vCPUs. When the first vCPU runs post suspend, the 233 * partition is automatically resumed. 234 */ 235 if (whp_dispatch.WHvSuspendPartitionTime) { 236 237 /* 238 * Unable to suspend partition while setting TSC is not a fatal 239 * error. It just increases the likelihood of TSC variance between 240 * vCPUs and some guest OS are able to handle that just fine. 241 */ 242 hr = whp_dispatch.WHvSuspendPartitionTime(whpx->partition); 243 if (FAILED(hr)) { 244 warn_report("WHPX: Failed to suspend partition, hr=%08lx", hr); 245 } 246 } 247 248 tsc_val.Reg64 = env->tsc; 249 hr = whp_dispatch.WHvSetVirtualProcessorRegisters( 250 whpx->partition, cpu->cpu_index, &tsc_reg, 1, &tsc_val); 251 if (FAILED(hr)) { 252 error_report("WHPX: Failed to set TSC, hr=%08lx", hr); 253 return -1; 254 } 255 256 return 0; 257 } 258 259 static void whpx_set_registers(CPUState *cpu, int level) 260 { 261 struct whpx_state *whpx = &whpx_global; 262 struct whpx_vcpu *vcpu = get_whpx_vcpu(cpu); 263 struct CPUX86State *env = (CPUArchState *)(cpu->env_ptr); 264 X86CPU *x86_cpu = X86_CPU(cpu); 265 struct whpx_register_set vcxt; 266 HRESULT hr; 267 int idx; 268 int idx_next; 269 int i; 270 int v86, r86; 271 272 assert(cpu_is_stopped(cpu) || qemu_cpu_is_self(cpu)); 273 274 /* 275 * Following MSRs have side effects on the guest or are too heavy for 276 * runtime. Limit them to full state update. 277 */ 278 if (level >= WHPX_SET_RESET_STATE) { 279 whpx_set_tsc(cpu); 280 } 281 282 memset(&vcxt, 0, sizeof(struct whpx_register_set)); 283 284 v86 = (env->eflags & VM_MASK); 285 r86 = !(env->cr[0] & CR0_PE_MASK); 286 287 vcpu->tpr = cpu_get_apic_tpr(x86_cpu->apic_state); 288 vcpu->apic_base = cpu_get_apic_base(x86_cpu->apic_state); 289 290 idx = 0; 291 292 /* Indexes for first 16 registers match between HV and QEMU definitions */ 293 idx_next = 16; 294 for (idx = 0; idx < CPU_NB_REGS; idx += 1) { 295 vcxt.values[idx].Reg64 = (uint64_t)env->regs[idx]; 296 } 297 idx = idx_next; 298 299 /* Same goes for RIP and RFLAGS */ 300 assert(whpx_register_names[idx] == WHvX64RegisterRip); 301 vcxt.values[idx++].Reg64 = env->eip; 302 303 assert(whpx_register_names[idx] == WHvX64RegisterRflags); 304 vcxt.values[idx++].Reg64 = env->eflags; 305 306 /* Translate 6+4 segment registers. HV and QEMU order matches */ 307 assert(idx == WHvX64RegisterEs); 308 for (i = 0; i < 6; i += 1, idx += 1) { 309 vcxt.values[idx].Segment = whpx_seg_q2h(&env->segs[i], v86, r86); 310 } 311 312 assert(idx == WHvX64RegisterLdtr); 313 vcxt.values[idx++].Segment = whpx_seg_q2h(&env->ldt, 0, 0); 314 315 assert(idx == WHvX64RegisterTr); 316 vcxt.values[idx++].Segment = whpx_seg_q2h(&env->tr, 0, 0); 317 318 assert(idx == WHvX64RegisterIdtr); 319 vcxt.values[idx].Table.Base = env->idt.base; 320 vcxt.values[idx].Table.Limit = env->idt.limit; 321 idx += 1; 322 323 assert(idx == WHvX64RegisterGdtr); 324 vcxt.values[idx].Table.Base = env->gdt.base; 325 vcxt.values[idx].Table.Limit = env->gdt.limit; 326 idx += 1; 327 328 /* CR0, 2, 3, 4, 8 */ 329 assert(whpx_register_names[idx] == WHvX64RegisterCr0); 330 vcxt.values[idx++].Reg64 = env->cr[0]; 331 assert(whpx_register_names[idx] == WHvX64RegisterCr2); 332 vcxt.values[idx++].Reg64 = env->cr[2]; 333 assert(whpx_register_names[idx] == WHvX64RegisterCr3); 334 vcxt.values[idx++].Reg64 = env->cr[3]; 335 assert(whpx_register_names[idx] == WHvX64RegisterCr4); 336 vcxt.values[idx++].Reg64 = env->cr[4]; 337 assert(whpx_register_names[idx] == WHvX64RegisterCr8); 338 vcxt.values[idx++].Reg64 = vcpu->tpr; 339 340 /* 8 Debug Registers - Skipped */ 341 342 /* 16 XMM registers */ 343 assert(whpx_register_names[idx] == WHvX64RegisterXmm0); 344 idx_next = idx + 16; 345 for (i = 0; i < sizeof(env->xmm_regs) / sizeof(ZMMReg); i += 1, idx += 1) { 346 vcxt.values[idx].Reg128.Low64 = env->xmm_regs[i].ZMM_Q(0); 347 vcxt.values[idx].Reg128.High64 = env->xmm_regs[i].ZMM_Q(1); 348 } 349 idx = idx_next; 350 351 /* 8 FP registers */ 352 assert(whpx_register_names[idx] == WHvX64RegisterFpMmx0); 353 for (i = 0; i < 8; i += 1, idx += 1) { 354 vcxt.values[idx].Fp.AsUINT128.Low64 = env->fpregs[i].mmx.MMX_Q(0); 355 /* vcxt.values[idx].Fp.AsUINT128.High64 = 356 env->fpregs[i].mmx.MMX_Q(1); 357 */ 358 } 359 360 /* FP control status register */ 361 assert(whpx_register_names[idx] == WHvX64RegisterFpControlStatus); 362 vcxt.values[idx].FpControlStatus.FpControl = env->fpuc; 363 vcxt.values[idx].FpControlStatus.FpStatus = 364 (env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11; 365 vcxt.values[idx].FpControlStatus.FpTag = 0; 366 for (i = 0; i < 8; ++i) { 367 vcxt.values[idx].FpControlStatus.FpTag |= (!env->fptags[i]) << i; 368 } 369 vcxt.values[idx].FpControlStatus.Reserved = 0; 370 vcxt.values[idx].FpControlStatus.LastFpOp = env->fpop; 371 vcxt.values[idx].FpControlStatus.LastFpRip = env->fpip; 372 idx += 1; 373 374 /* XMM control status register */ 375 assert(whpx_register_names[idx] == WHvX64RegisterXmmControlStatus); 376 vcxt.values[idx].XmmControlStatus.LastFpRdp = 0; 377 vcxt.values[idx].XmmControlStatus.XmmStatusControl = env->mxcsr; 378 vcxt.values[idx].XmmControlStatus.XmmStatusControlMask = 0x0000ffff; 379 idx += 1; 380 381 /* MSRs */ 382 assert(whpx_register_names[idx] == WHvX64RegisterEfer); 383 vcxt.values[idx++].Reg64 = env->efer; 384 #ifdef TARGET_X86_64 385 assert(whpx_register_names[idx] == WHvX64RegisterKernelGsBase); 386 vcxt.values[idx++].Reg64 = env->kernelgsbase; 387 #endif 388 389 assert(whpx_register_names[idx] == WHvX64RegisterApicBase); 390 vcxt.values[idx++].Reg64 = vcpu->apic_base; 391 392 /* WHvX64RegisterPat - Skipped */ 393 394 assert(whpx_register_names[idx] == WHvX64RegisterSysenterCs); 395 vcxt.values[idx++].Reg64 = env->sysenter_cs; 396 assert(whpx_register_names[idx] == WHvX64RegisterSysenterEip); 397 vcxt.values[idx++].Reg64 = env->sysenter_eip; 398 assert(whpx_register_names[idx] == WHvX64RegisterSysenterEsp); 399 vcxt.values[idx++].Reg64 = env->sysenter_esp; 400 assert(whpx_register_names[idx] == WHvX64RegisterStar); 401 vcxt.values[idx++].Reg64 = env->star; 402 #ifdef TARGET_X86_64 403 assert(whpx_register_names[idx] == WHvX64RegisterLstar); 404 vcxt.values[idx++].Reg64 = env->lstar; 405 assert(whpx_register_names[idx] == WHvX64RegisterCstar); 406 vcxt.values[idx++].Reg64 = env->cstar; 407 assert(whpx_register_names[idx] == WHvX64RegisterSfmask); 408 vcxt.values[idx++].Reg64 = env->fmask; 409 #endif 410 411 /* Interrupt / Event Registers - Skipped */ 412 413 assert(idx == RTL_NUMBER_OF(whpx_register_names)); 414 415 hr = whp_dispatch.WHvSetVirtualProcessorRegisters( 416 whpx->partition, cpu->cpu_index, 417 whpx_register_names, 418 RTL_NUMBER_OF(whpx_register_names), 419 &vcxt.values[0]); 420 421 if (FAILED(hr)) { 422 error_report("WHPX: Failed to set virtual processor context, hr=%08lx", 423 hr); 424 } 425 426 return; 427 } 428 429 static int whpx_get_tsc(CPUState *cpu) 430 { 431 struct CPUX86State *env = (CPUArchState *)(cpu->env_ptr); 432 WHV_REGISTER_NAME tsc_reg = WHvX64RegisterTsc; 433 WHV_REGISTER_VALUE tsc_val; 434 HRESULT hr; 435 struct whpx_state *whpx = &whpx_global; 436 437 hr = whp_dispatch.WHvGetVirtualProcessorRegisters( 438 whpx->partition, cpu->cpu_index, &tsc_reg, 1, &tsc_val); 439 if (FAILED(hr)) { 440 error_report("WHPX: Failed to get TSC, hr=%08lx", hr); 441 return -1; 442 } 443 444 env->tsc = tsc_val.Reg64; 445 return 0; 446 } 447 448 static void whpx_get_registers(CPUState *cpu) 449 { 450 struct whpx_state *whpx = &whpx_global; 451 struct whpx_vcpu *vcpu = get_whpx_vcpu(cpu); 452 struct CPUX86State *env = (CPUArchState *)(cpu->env_ptr); 453 X86CPU *x86_cpu = X86_CPU(cpu); 454 struct whpx_register_set vcxt; 455 uint64_t tpr, apic_base; 456 HRESULT hr; 457 int idx; 458 int idx_next; 459 int i; 460 461 assert(cpu_is_stopped(cpu) || qemu_cpu_is_self(cpu)); 462 463 if (!env->tsc_valid) { 464 whpx_get_tsc(cpu); 465 env->tsc_valid = !runstate_is_running(); 466 } 467 468 hr = whp_dispatch.WHvGetVirtualProcessorRegisters( 469 whpx->partition, cpu->cpu_index, 470 whpx_register_names, 471 RTL_NUMBER_OF(whpx_register_names), 472 &vcxt.values[0]); 473 if (FAILED(hr)) { 474 error_report("WHPX: Failed to get virtual processor context, hr=%08lx", 475 hr); 476 } 477 478 idx = 0; 479 480 /* Indexes for first 16 registers match between HV and QEMU definitions */ 481 idx_next = 16; 482 for (idx = 0; idx < CPU_NB_REGS; idx += 1) { 483 env->regs[idx] = vcxt.values[idx].Reg64; 484 } 485 idx = idx_next; 486 487 /* Same goes for RIP and RFLAGS */ 488 assert(whpx_register_names[idx] == WHvX64RegisterRip); 489 env->eip = vcxt.values[idx++].Reg64; 490 assert(whpx_register_names[idx] == WHvX64RegisterRflags); 491 env->eflags = vcxt.values[idx++].Reg64; 492 493 /* Translate 6+4 segment registers. HV and QEMU order matches */ 494 assert(idx == WHvX64RegisterEs); 495 for (i = 0; i < 6; i += 1, idx += 1) { 496 env->segs[i] = whpx_seg_h2q(&vcxt.values[idx].Segment); 497 } 498 499 assert(idx == WHvX64RegisterLdtr); 500 env->ldt = whpx_seg_h2q(&vcxt.values[idx++].Segment); 501 assert(idx == WHvX64RegisterTr); 502 env->tr = whpx_seg_h2q(&vcxt.values[idx++].Segment); 503 assert(idx == WHvX64RegisterIdtr); 504 env->idt.base = vcxt.values[idx].Table.Base; 505 env->idt.limit = vcxt.values[idx].Table.Limit; 506 idx += 1; 507 assert(idx == WHvX64RegisterGdtr); 508 env->gdt.base = vcxt.values[idx].Table.Base; 509 env->gdt.limit = vcxt.values[idx].Table.Limit; 510 idx += 1; 511 512 /* CR0, 2, 3, 4, 8 */ 513 assert(whpx_register_names[idx] == WHvX64RegisterCr0); 514 env->cr[0] = vcxt.values[idx++].Reg64; 515 assert(whpx_register_names[idx] == WHvX64RegisterCr2); 516 env->cr[2] = vcxt.values[idx++].Reg64; 517 assert(whpx_register_names[idx] == WHvX64RegisterCr3); 518 env->cr[3] = vcxt.values[idx++].Reg64; 519 assert(whpx_register_names[idx] == WHvX64RegisterCr4); 520 env->cr[4] = vcxt.values[idx++].Reg64; 521 assert(whpx_register_names[idx] == WHvX64RegisterCr8); 522 tpr = vcxt.values[idx++].Reg64; 523 if (tpr != vcpu->tpr) { 524 vcpu->tpr = tpr; 525 cpu_set_apic_tpr(x86_cpu->apic_state, tpr); 526 } 527 528 /* 8 Debug Registers - Skipped */ 529 530 /* 16 XMM registers */ 531 assert(whpx_register_names[idx] == WHvX64RegisterXmm0); 532 idx_next = idx + 16; 533 for (i = 0; i < sizeof(env->xmm_regs) / sizeof(ZMMReg); i += 1, idx += 1) { 534 env->xmm_regs[i].ZMM_Q(0) = vcxt.values[idx].Reg128.Low64; 535 env->xmm_regs[i].ZMM_Q(1) = vcxt.values[idx].Reg128.High64; 536 } 537 idx = idx_next; 538 539 /* 8 FP registers */ 540 assert(whpx_register_names[idx] == WHvX64RegisterFpMmx0); 541 for (i = 0; i < 8; i += 1, idx += 1) { 542 env->fpregs[i].mmx.MMX_Q(0) = vcxt.values[idx].Fp.AsUINT128.Low64; 543 /* env->fpregs[i].mmx.MMX_Q(1) = 544 vcxt.values[idx].Fp.AsUINT128.High64; 545 */ 546 } 547 548 /* FP control status register */ 549 assert(whpx_register_names[idx] == WHvX64RegisterFpControlStatus); 550 env->fpuc = vcxt.values[idx].FpControlStatus.FpControl; 551 env->fpstt = (vcxt.values[idx].FpControlStatus.FpStatus >> 11) & 0x7; 552 env->fpus = vcxt.values[idx].FpControlStatus.FpStatus & ~0x3800; 553 for (i = 0; i < 8; ++i) { 554 env->fptags[i] = !((vcxt.values[idx].FpControlStatus.FpTag >> i) & 1); 555 } 556 env->fpop = vcxt.values[idx].FpControlStatus.LastFpOp; 557 env->fpip = vcxt.values[idx].FpControlStatus.LastFpRip; 558 idx += 1; 559 560 /* XMM control status register */ 561 assert(whpx_register_names[idx] == WHvX64RegisterXmmControlStatus); 562 env->mxcsr = vcxt.values[idx].XmmControlStatus.XmmStatusControl; 563 idx += 1; 564 565 /* MSRs */ 566 assert(whpx_register_names[idx] == WHvX64RegisterEfer); 567 env->efer = vcxt.values[idx++].Reg64; 568 #ifdef TARGET_X86_64 569 assert(whpx_register_names[idx] == WHvX64RegisterKernelGsBase); 570 env->kernelgsbase = vcxt.values[idx++].Reg64; 571 #endif 572 573 assert(whpx_register_names[idx] == WHvX64RegisterApicBase); 574 apic_base = vcxt.values[idx++].Reg64; 575 if (apic_base != vcpu->apic_base) { 576 vcpu->apic_base = apic_base; 577 cpu_set_apic_base(x86_cpu->apic_state, vcpu->apic_base); 578 } 579 580 /* WHvX64RegisterPat - Skipped */ 581 582 assert(whpx_register_names[idx] == WHvX64RegisterSysenterCs); 583 env->sysenter_cs = vcxt.values[idx++].Reg64; 584 assert(whpx_register_names[idx] == WHvX64RegisterSysenterEip); 585 env->sysenter_eip = vcxt.values[idx++].Reg64; 586 assert(whpx_register_names[idx] == WHvX64RegisterSysenterEsp); 587 env->sysenter_esp = vcxt.values[idx++].Reg64; 588 assert(whpx_register_names[idx] == WHvX64RegisterStar); 589 env->star = vcxt.values[idx++].Reg64; 590 #ifdef TARGET_X86_64 591 assert(whpx_register_names[idx] == WHvX64RegisterLstar); 592 env->lstar = vcxt.values[idx++].Reg64; 593 assert(whpx_register_names[idx] == WHvX64RegisterCstar); 594 env->cstar = vcxt.values[idx++].Reg64; 595 assert(whpx_register_names[idx] == WHvX64RegisterSfmask); 596 env->fmask = vcxt.values[idx++].Reg64; 597 #endif 598 599 /* Interrupt / Event Registers - Skipped */ 600 601 assert(idx == RTL_NUMBER_OF(whpx_register_names)); 602 603 if (whpx_apic_in_platform()) { 604 whpx_apic_get(x86_cpu->apic_state); 605 } 606 607 return; 608 } 609 610 static HRESULT CALLBACK whpx_emu_ioport_callback( 611 void *ctx, 612 WHV_EMULATOR_IO_ACCESS_INFO *IoAccess) 613 { 614 MemTxAttrs attrs = { 0 }; 615 address_space_rw(&address_space_io, IoAccess->Port, attrs, 616 &IoAccess->Data, IoAccess->AccessSize, 617 IoAccess->Direction); 618 return S_OK; 619 } 620 621 static HRESULT CALLBACK whpx_emu_mmio_callback( 622 void *ctx, 623 WHV_EMULATOR_MEMORY_ACCESS_INFO *ma) 624 { 625 cpu_physical_memory_rw(ma->GpaAddress, ma->Data, ma->AccessSize, 626 ma->Direction); 627 return S_OK; 628 } 629 630 static HRESULT CALLBACK whpx_emu_getreg_callback( 631 void *ctx, 632 const WHV_REGISTER_NAME *RegisterNames, 633 UINT32 RegisterCount, 634 WHV_REGISTER_VALUE *RegisterValues) 635 { 636 HRESULT hr; 637 struct whpx_state *whpx = &whpx_global; 638 CPUState *cpu = (CPUState *)ctx; 639 640 hr = whp_dispatch.WHvGetVirtualProcessorRegisters( 641 whpx->partition, cpu->cpu_index, 642 RegisterNames, RegisterCount, 643 RegisterValues); 644 if (FAILED(hr)) { 645 error_report("WHPX: Failed to get virtual processor registers," 646 " hr=%08lx", hr); 647 } 648 649 return hr; 650 } 651 652 static HRESULT CALLBACK whpx_emu_setreg_callback( 653 void *ctx, 654 const WHV_REGISTER_NAME *RegisterNames, 655 UINT32 RegisterCount, 656 const WHV_REGISTER_VALUE *RegisterValues) 657 { 658 HRESULT hr; 659 struct whpx_state *whpx = &whpx_global; 660 CPUState *cpu = (CPUState *)ctx; 661 662 hr = whp_dispatch.WHvSetVirtualProcessorRegisters( 663 whpx->partition, cpu->cpu_index, 664 RegisterNames, RegisterCount, 665 RegisterValues); 666 if (FAILED(hr)) { 667 error_report("WHPX: Failed to set virtual processor registers," 668 " hr=%08lx", hr); 669 } 670 671 /* 672 * The emulator just successfully wrote the register state. We clear the 673 * dirty state so we avoid the double write on resume of the VP. 674 */ 675 cpu->vcpu_dirty = false; 676 677 return hr; 678 } 679 680 static HRESULT CALLBACK whpx_emu_translate_callback( 681 void *ctx, 682 WHV_GUEST_VIRTUAL_ADDRESS Gva, 683 WHV_TRANSLATE_GVA_FLAGS TranslateFlags, 684 WHV_TRANSLATE_GVA_RESULT_CODE *TranslationResult, 685 WHV_GUEST_PHYSICAL_ADDRESS *Gpa) 686 { 687 HRESULT hr; 688 struct whpx_state *whpx = &whpx_global; 689 CPUState *cpu = (CPUState *)ctx; 690 WHV_TRANSLATE_GVA_RESULT res; 691 692 hr = whp_dispatch.WHvTranslateGva(whpx->partition, cpu->cpu_index, 693 Gva, TranslateFlags, &res, Gpa); 694 if (FAILED(hr)) { 695 error_report("WHPX: Failed to translate GVA, hr=%08lx", hr); 696 } else { 697 *TranslationResult = res.ResultCode; 698 } 699 700 return hr; 701 } 702 703 static const WHV_EMULATOR_CALLBACKS whpx_emu_callbacks = { 704 .Size = sizeof(WHV_EMULATOR_CALLBACKS), 705 .WHvEmulatorIoPortCallback = whpx_emu_ioport_callback, 706 .WHvEmulatorMemoryCallback = whpx_emu_mmio_callback, 707 .WHvEmulatorGetVirtualProcessorRegisters = whpx_emu_getreg_callback, 708 .WHvEmulatorSetVirtualProcessorRegisters = whpx_emu_setreg_callback, 709 .WHvEmulatorTranslateGvaPage = whpx_emu_translate_callback, 710 }; 711 712 static int whpx_handle_mmio(CPUState *cpu, WHV_MEMORY_ACCESS_CONTEXT *ctx) 713 { 714 HRESULT hr; 715 struct whpx_vcpu *vcpu = get_whpx_vcpu(cpu); 716 WHV_EMULATOR_STATUS emu_status; 717 718 hr = whp_dispatch.WHvEmulatorTryMmioEmulation( 719 vcpu->emulator, cpu, 720 &vcpu->exit_ctx.VpContext, ctx, 721 &emu_status); 722 if (FAILED(hr)) { 723 error_report("WHPX: Failed to parse MMIO access, hr=%08lx", hr); 724 return -1; 725 } 726 727 if (!emu_status.EmulationSuccessful) { 728 error_report("WHPX: Failed to emulate MMIO access with" 729 " EmulatorReturnStatus: %u", emu_status.AsUINT32); 730 return -1; 731 } 732 733 return 0; 734 } 735 736 static int whpx_handle_portio(CPUState *cpu, 737 WHV_X64_IO_PORT_ACCESS_CONTEXT *ctx) 738 { 739 HRESULT hr; 740 struct whpx_vcpu *vcpu = get_whpx_vcpu(cpu); 741 WHV_EMULATOR_STATUS emu_status; 742 743 hr = whp_dispatch.WHvEmulatorTryIoEmulation( 744 vcpu->emulator, cpu, 745 &vcpu->exit_ctx.VpContext, ctx, 746 &emu_status); 747 if (FAILED(hr)) { 748 error_report("WHPX: Failed to parse PortIO access, hr=%08lx", hr); 749 return -1; 750 } 751 752 if (!emu_status.EmulationSuccessful) { 753 error_report("WHPX: Failed to emulate PortIO access with" 754 " EmulatorReturnStatus: %u", emu_status.AsUINT32); 755 return -1; 756 } 757 758 return 0; 759 } 760 761 static int whpx_handle_halt(CPUState *cpu) 762 { 763 struct CPUX86State *env = (CPUArchState *)(cpu->env_ptr); 764 int ret = 0; 765 766 qemu_mutex_lock_iothread(); 767 if (!((cpu->interrupt_request & CPU_INTERRUPT_HARD) && 768 (env->eflags & IF_MASK)) && 769 !(cpu->interrupt_request & CPU_INTERRUPT_NMI)) { 770 cpu->exception_index = EXCP_HLT; 771 cpu->halted = true; 772 ret = 1; 773 } 774 qemu_mutex_unlock_iothread(); 775 776 return ret; 777 } 778 779 static void whpx_vcpu_pre_run(CPUState *cpu) 780 { 781 HRESULT hr; 782 struct whpx_state *whpx = &whpx_global; 783 struct whpx_vcpu *vcpu = get_whpx_vcpu(cpu); 784 struct CPUX86State *env = (CPUArchState *)(cpu->env_ptr); 785 X86CPU *x86_cpu = X86_CPU(cpu); 786 int irq; 787 uint8_t tpr; 788 WHV_X64_PENDING_INTERRUPTION_REGISTER new_int; 789 UINT32 reg_count = 0; 790 WHV_REGISTER_VALUE reg_values[3]; 791 WHV_REGISTER_NAME reg_names[3]; 792 793 memset(&new_int, 0, sizeof(new_int)); 794 memset(reg_values, 0, sizeof(reg_values)); 795 796 qemu_mutex_lock_iothread(); 797 798 /* Inject NMI */ 799 if (!vcpu->interruption_pending && 800 cpu->interrupt_request & (CPU_INTERRUPT_NMI | CPU_INTERRUPT_SMI)) { 801 if (cpu->interrupt_request & CPU_INTERRUPT_NMI) { 802 cpu->interrupt_request &= ~CPU_INTERRUPT_NMI; 803 vcpu->interruptable = false; 804 new_int.InterruptionType = WHvX64PendingNmi; 805 new_int.InterruptionPending = 1; 806 new_int.InterruptionVector = 2; 807 } 808 if (cpu->interrupt_request & CPU_INTERRUPT_SMI) { 809 cpu->interrupt_request &= ~CPU_INTERRUPT_SMI; 810 } 811 } 812 813 /* 814 * Force the VCPU out of its inner loop to process any INIT requests or 815 * commit pending TPR access. 816 */ 817 if (cpu->interrupt_request & (CPU_INTERRUPT_INIT | CPU_INTERRUPT_TPR)) { 818 if ((cpu->interrupt_request & CPU_INTERRUPT_INIT) && 819 !(env->hflags & HF_SMM_MASK)) { 820 cpu->exit_request = 1; 821 } 822 if (cpu->interrupt_request & CPU_INTERRUPT_TPR) { 823 cpu->exit_request = 1; 824 } 825 } 826 827 /* Get pending hard interruption or replay one that was overwritten */ 828 if (!whpx_apic_in_platform()) { 829 if (!vcpu->interruption_pending && 830 vcpu->interruptable && (env->eflags & IF_MASK)) { 831 assert(!new_int.InterruptionPending); 832 if (cpu->interrupt_request & CPU_INTERRUPT_HARD) { 833 cpu->interrupt_request &= ~CPU_INTERRUPT_HARD; 834 irq = cpu_get_pic_interrupt(env); 835 if (irq >= 0) { 836 new_int.InterruptionType = WHvX64PendingInterrupt; 837 new_int.InterruptionPending = 1; 838 new_int.InterruptionVector = irq; 839 } 840 } 841 } 842 843 /* Setup interrupt state if new one was prepared */ 844 if (new_int.InterruptionPending) { 845 reg_values[reg_count].PendingInterruption = new_int; 846 reg_names[reg_count] = WHvRegisterPendingInterruption; 847 reg_count += 1; 848 } 849 } else if (vcpu->ready_for_pic_interrupt && 850 (cpu->interrupt_request & CPU_INTERRUPT_HARD)) { 851 cpu->interrupt_request &= ~CPU_INTERRUPT_HARD; 852 irq = cpu_get_pic_interrupt(env); 853 if (irq >= 0) { 854 reg_names[reg_count] = WHvRegisterPendingEvent; 855 reg_values[reg_count].ExtIntEvent = (WHV_X64_PENDING_EXT_INT_EVENT) 856 { 857 .EventPending = 1, 858 .EventType = WHvX64PendingEventExtInt, 859 .Vector = irq, 860 }; 861 reg_count += 1; 862 } 863 } 864 865 /* Sync the TPR to the CR8 if was modified during the intercept */ 866 tpr = cpu_get_apic_tpr(x86_cpu->apic_state); 867 if (tpr != vcpu->tpr) { 868 vcpu->tpr = tpr; 869 reg_values[reg_count].Reg64 = tpr; 870 cpu->exit_request = 1; 871 reg_names[reg_count] = WHvX64RegisterCr8; 872 reg_count += 1; 873 } 874 875 /* Update the state of the interrupt delivery notification */ 876 if (!vcpu->window_registered && 877 cpu->interrupt_request & CPU_INTERRUPT_HARD) { 878 reg_values[reg_count].DeliverabilityNotifications = 879 (WHV_X64_DELIVERABILITY_NOTIFICATIONS_REGISTER) { 880 .InterruptNotification = 1 881 }; 882 vcpu->window_registered = 1; 883 reg_names[reg_count] = WHvX64RegisterDeliverabilityNotifications; 884 reg_count += 1; 885 } 886 887 qemu_mutex_unlock_iothread(); 888 vcpu->ready_for_pic_interrupt = false; 889 890 if (reg_count) { 891 hr = whp_dispatch.WHvSetVirtualProcessorRegisters( 892 whpx->partition, cpu->cpu_index, 893 reg_names, reg_count, reg_values); 894 if (FAILED(hr)) { 895 error_report("WHPX: Failed to set interrupt state registers," 896 " hr=%08lx", hr); 897 } 898 } 899 900 return; 901 } 902 903 static void whpx_vcpu_post_run(CPUState *cpu) 904 { 905 struct whpx_vcpu *vcpu = get_whpx_vcpu(cpu); 906 struct CPUX86State *env = (CPUArchState *)(cpu->env_ptr); 907 X86CPU *x86_cpu = X86_CPU(cpu); 908 909 env->eflags = vcpu->exit_ctx.VpContext.Rflags; 910 911 uint64_t tpr = vcpu->exit_ctx.VpContext.Cr8; 912 if (vcpu->tpr != tpr) { 913 vcpu->tpr = tpr; 914 qemu_mutex_lock_iothread(); 915 cpu_set_apic_tpr(x86_cpu->apic_state, vcpu->tpr); 916 qemu_mutex_unlock_iothread(); 917 } 918 919 vcpu->interruption_pending = 920 vcpu->exit_ctx.VpContext.ExecutionState.InterruptionPending; 921 922 vcpu->interruptable = 923 !vcpu->exit_ctx.VpContext.ExecutionState.InterruptShadow; 924 925 return; 926 } 927 928 static void whpx_vcpu_process_async_events(CPUState *cpu) 929 { 930 struct CPUX86State *env = (CPUArchState *)(cpu->env_ptr); 931 X86CPU *x86_cpu = X86_CPU(cpu); 932 struct whpx_vcpu *vcpu = get_whpx_vcpu(cpu); 933 934 if ((cpu->interrupt_request & CPU_INTERRUPT_INIT) && 935 !(env->hflags & HF_SMM_MASK)) { 936 whpx_cpu_synchronize_state(cpu); 937 do_cpu_init(x86_cpu); 938 vcpu->interruptable = true; 939 } 940 941 if (cpu->interrupt_request & CPU_INTERRUPT_POLL) { 942 cpu->interrupt_request &= ~CPU_INTERRUPT_POLL; 943 apic_poll_irq(x86_cpu->apic_state); 944 } 945 946 if (((cpu->interrupt_request & CPU_INTERRUPT_HARD) && 947 (env->eflags & IF_MASK)) || 948 (cpu->interrupt_request & CPU_INTERRUPT_NMI)) { 949 cpu->halted = false; 950 } 951 952 if (cpu->interrupt_request & CPU_INTERRUPT_SIPI) { 953 whpx_cpu_synchronize_state(cpu); 954 do_cpu_sipi(x86_cpu); 955 } 956 957 if (cpu->interrupt_request & CPU_INTERRUPT_TPR) { 958 cpu->interrupt_request &= ~CPU_INTERRUPT_TPR; 959 whpx_cpu_synchronize_state(cpu); 960 apic_handle_tpr_access_report(x86_cpu->apic_state, env->eip, 961 env->tpr_access_type); 962 } 963 964 return; 965 } 966 967 static int whpx_vcpu_run(CPUState *cpu) 968 { 969 HRESULT hr; 970 struct whpx_state *whpx = &whpx_global; 971 struct whpx_vcpu *vcpu = get_whpx_vcpu(cpu); 972 int ret; 973 974 whpx_vcpu_process_async_events(cpu); 975 if (cpu->halted && !whpx_apic_in_platform()) { 976 cpu->exception_index = EXCP_HLT; 977 qatomic_set(&cpu->exit_request, false); 978 return 0; 979 } 980 981 qemu_mutex_unlock_iothread(); 982 cpu_exec_start(cpu); 983 984 do { 985 if (cpu->vcpu_dirty) { 986 whpx_set_registers(cpu, WHPX_SET_RUNTIME_STATE); 987 cpu->vcpu_dirty = false; 988 } 989 990 whpx_vcpu_pre_run(cpu); 991 992 if (qatomic_read(&cpu->exit_request)) { 993 whpx_vcpu_kick(cpu); 994 } 995 996 hr = whp_dispatch.WHvRunVirtualProcessor( 997 whpx->partition, cpu->cpu_index, 998 &vcpu->exit_ctx, sizeof(vcpu->exit_ctx)); 999 1000 if (FAILED(hr)) { 1001 error_report("WHPX: Failed to exec a virtual processor," 1002 " hr=%08lx", hr); 1003 ret = -1; 1004 break; 1005 } 1006 1007 whpx_vcpu_post_run(cpu); 1008 1009 switch (vcpu->exit_ctx.ExitReason) { 1010 case WHvRunVpExitReasonMemoryAccess: 1011 ret = whpx_handle_mmio(cpu, &vcpu->exit_ctx.MemoryAccess); 1012 break; 1013 1014 case WHvRunVpExitReasonX64IoPortAccess: 1015 ret = whpx_handle_portio(cpu, &vcpu->exit_ctx.IoPortAccess); 1016 break; 1017 1018 case WHvRunVpExitReasonX64InterruptWindow: 1019 vcpu->ready_for_pic_interrupt = 1; 1020 vcpu->window_registered = 0; 1021 ret = 0; 1022 break; 1023 1024 case WHvRunVpExitReasonX64ApicEoi: 1025 assert(whpx_apic_in_platform()); 1026 ioapic_eoi_broadcast(vcpu->exit_ctx.ApicEoi.InterruptVector); 1027 break; 1028 1029 case WHvRunVpExitReasonX64Halt: 1030 ret = whpx_handle_halt(cpu); 1031 break; 1032 1033 case WHvRunVpExitReasonX64ApicInitSipiTrap: { 1034 WHV_INTERRUPT_CONTROL ipi = {0}; 1035 uint64_t icr = vcpu->exit_ctx.ApicInitSipi.ApicIcr; 1036 uint32_t delivery_mode = 1037 (icr & APIC_ICR_DELIV_MOD) >> APIC_ICR_DELIV_MOD_SHIFT; 1038 int dest_shorthand = 1039 (icr & APIC_ICR_DEST_SHORT) >> APIC_ICR_DEST_SHORT_SHIFT; 1040 bool broadcast = false; 1041 bool include_self = false; 1042 uint32_t i; 1043 1044 /* We only registered for INIT and SIPI exits. */ 1045 if ((delivery_mode != APIC_DM_INIT) && 1046 (delivery_mode != APIC_DM_SIPI)) { 1047 error_report( 1048 "WHPX: Unexpected APIC exit that is not a INIT or SIPI"); 1049 break; 1050 } 1051 1052 if (delivery_mode == APIC_DM_INIT) { 1053 ipi.Type = WHvX64InterruptTypeInit; 1054 } else { 1055 ipi.Type = WHvX64InterruptTypeSipi; 1056 } 1057 1058 ipi.DestinationMode = 1059 ((icr & APIC_ICR_DEST_MOD) >> APIC_ICR_DEST_MOD_SHIFT) ? 1060 WHvX64InterruptDestinationModeLogical : 1061 WHvX64InterruptDestinationModePhysical; 1062 1063 ipi.TriggerMode = 1064 ((icr & APIC_ICR_TRIGGER_MOD) >> APIC_ICR_TRIGGER_MOD_SHIFT) ? 1065 WHvX64InterruptTriggerModeLevel : 1066 WHvX64InterruptTriggerModeEdge; 1067 1068 ipi.Vector = icr & APIC_VECTOR_MASK; 1069 switch (dest_shorthand) { 1070 /* no shorthand. Bits 56-63 contain the destination. */ 1071 case 0: 1072 ipi.Destination = (icr >> 56) & APIC_VECTOR_MASK; 1073 hr = whp_dispatch.WHvRequestInterrupt(whpx->partition, 1074 &ipi, sizeof(ipi)); 1075 if (FAILED(hr)) { 1076 error_report("WHPX: Failed to request interrupt hr=%08lx", 1077 hr); 1078 } 1079 1080 break; 1081 1082 /* self */ 1083 case 1: 1084 include_self = true; 1085 break; 1086 1087 /* broadcast, including self */ 1088 case 2: 1089 broadcast = true; 1090 include_self = true; 1091 break; 1092 1093 /* broadcast, excluding self */ 1094 case 3: 1095 broadcast = true; 1096 break; 1097 } 1098 1099 if (!broadcast && !include_self) { 1100 break; 1101 } 1102 1103 for (i = 0; i <= max_vcpu_index; i++) { 1104 if (i == cpu->cpu_index && !include_self) { 1105 continue; 1106 } 1107 1108 /* 1109 * Assuming that APIC Ids are identity mapped since 1110 * WHvX64RegisterApicId & WHvX64RegisterInitialApicId registers 1111 * are not handled yet and the hypervisor doesn't allow the 1112 * guest to modify the APIC ID. 1113 */ 1114 ipi.Destination = i; 1115 hr = whp_dispatch.WHvRequestInterrupt(whpx->partition, 1116 &ipi, sizeof(ipi)); 1117 if (FAILED(hr)) { 1118 error_report( 1119 "WHPX: Failed to request SIPI for %d, hr=%08lx", 1120 i, hr); 1121 } 1122 } 1123 1124 break; 1125 } 1126 1127 case WHvRunVpExitReasonCanceled: 1128 cpu->exception_index = EXCP_INTERRUPT; 1129 ret = 1; 1130 break; 1131 1132 case WHvRunVpExitReasonX64MsrAccess: { 1133 WHV_REGISTER_VALUE reg_values[3] = {0}; 1134 WHV_REGISTER_NAME reg_names[3]; 1135 UINT32 reg_count; 1136 1137 reg_names[0] = WHvX64RegisterRip; 1138 reg_names[1] = WHvX64RegisterRax; 1139 reg_names[2] = WHvX64RegisterRdx; 1140 1141 reg_values[0].Reg64 = 1142 vcpu->exit_ctx.VpContext.Rip + 1143 vcpu->exit_ctx.VpContext.InstructionLength; 1144 1145 /* 1146 * For all unsupported MSR access we: 1147 * ignore writes 1148 * return 0 on read. 1149 */ 1150 reg_count = vcpu->exit_ctx.MsrAccess.AccessInfo.IsWrite ? 1151 1 : 3; 1152 1153 hr = whp_dispatch.WHvSetVirtualProcessorRegisters( 1154 whpx->partition, 1155 cpu->cpu_index, 1156 reg_names, reg_count, 1157 reg_values); 1158 1159 if (FAILED(hr)) { 1160 error_report("WHPX: Failed to set MsrAccess state " 1161 " registers, hr=%08lx", hr); 1162 } 1163 ret = 0; 1164 break; 1165 } 1166 case WHvRunVpExitReasonX64Cpuid: { 1167 WHV_REGISTER_VALUE reg_values[5]; 1168 WHV_REGISTER_NAME reg_names[5]; 1169 UINT32 reg_count = 5; 1170 UINT64 cpuid_fn, rip = 0, rax = 0, rcx = 0, rdx = 0, rbx = 0; 1171 X86CPU *x86_cpu = X86_CPU(cpu); 1172 CPUX86State *env = &x86_cpu->env; 1173 1174 memset(reg_values, 0, sizeof(reg_values)); 1175 1176 rip = vcpu->exit_ctx.VpContext.Rip + 1177 vcpu->exit_ctx.VpContext.InstructionLength; 1178 cpuid_fn = vcpu->exit_ctx.CpuidAccess.Rax; 1179 1180 /* 1181 * Ideally, these should be supplied to the hypervisor during VCPU 1182 * initialization and it should be able to satisfy this request. 1183 * But, currently, WHPX doesn't support setting CPUID values in the 1184 * hypervisor once the partition has been setup, which is too late 1185 * since VCPUs are realized later. For now, use the values from 1186 * QEMU to satisfy these requests, until WHPX adds support for 1187 * being able to set these values in the hypervisor at runtime. 1188 */ 1189 cpu_x86_cpuid(env, cpuid_fn, 0, (UINT32 *)&rax, (UINT32 *)&rbx, 1190 (UINT32 *)&rcx, (UINT32 *)&rdx); 1191 switch (cpuid_fn) { 1192 case 0x40000000: 1193 /* Expose the vmware cpu frequency cpuid leaf */ 1194 rax = 0x40000010; 1195 rbx = rcx = rdx = 0; 1196 break; 1197 1198 case 0x40000010: 1199 rax = env->tsc_khz; 1200 rbx = env->apic_bus_freq / 1000; /* Hz to KHz */ 1201 rcx = rdx = 0; 1202 break; 1203 1204 case 0x80000001: 1205 /* Remove any support of OSVW */ 1206 rcx &= ~CPUID_EXT3_OSVW; 1207 break; 1208 } 1209 1210 reg_names[0] = WHvX64RegisterRip; 1211 reg_names[1] = WHvX64RegisterRax; 1212 reg_names[2] = WHvX64RegisterRcx; 1213 reg_names[3] = WHvX64RegisterRdx; 1214 reg_names[4] = WHvX64RegisterRbx; 1215 1216 reg_values[0].Reg64 = rip; 1217 reg_values[1].Reg64 = rax; 1218 reg_values[2].Reg64 = rcx; 1219 reg_values[3].Reg64 = rdx; 1220 reg_values[4].Reg64 = rbx; 1221 1222 hr = whp_dispatch.WHvSetVirtualProcessorRegisters( 1223 whpx->partition, cpu->cpu_index, 1224 reg_names, 1225 reg_count, 1226 reg_values); 1227 1228 if (FAILED(hr)) { 1229 error_report("WHPX: Failed to set CpuidAccess state registers," 1230 " hr=%08lx", hr); 1231 } 1232 ret = 0; 1233 break; 1234 } 1235 case WHvRunVpExitReasonNone: 1236 case WHvRunVpExitReasonUnrecoverableException: 1237 case WHvRunVpExitReasonInvalidVpRegisterValue: 1238 case WHvRunVpExitReasonUnsupportedFeature: 1239 case WHvRunVpExitReasonException: 1240 default: 1241 error_report("WHPX: Unexpected VP exit code %d", 1242 vcpu->exit_ctx.ExitReason); 1243 whpx_get_registers(cpu); 1244 qemu_mutex_lock_iothread(); 1245 qemu_system_guest_panicked(cpu_get_crash_info(cpu)); 1246 qemu_mutex_unlock_iothread(); 1247 break; 1248 } 1249 1250 } while (!ret); 1251 1252 cpu_exec_end(cpu); 1253 qemu_mutex_lock_iothread(); 1254 current_cpu = cpu; 1255 1256 qatomic_set(&cpu->exit_request, false); 1257 1258 return ret < 0; 1259 } 1260 1261 static void do_whpx_cpu_synchronize_state(CPUState *cpu, run_on_cpu_data arg) 1262 { 1263 if (!cpu->vcpu_dirty) { 1264 whpx_get_registers(cpu); 1265 cpu->vcpu_dirty = true; 1266 } 1267 } 1268 1269 static void do_whpx_cpu_synchronize_post_reset(CPUState *cpu, 1270 run_on_cpu_data arg) 1271 { 1272 whpx_set_registers(cpu, WHPX_SET_RESET_STATE); 1273 cpu->vcpu_dirty = false; 1274 } 1275 1276 static void do_whpx_cpu_synchronize_post_init(CPUState *cpu, 1277 run_on_cpu_data arg) 1278 { 1279 whpx_set_registers(cpu, WHPX_SET_FULL_STATE); 1280 cpu->vcpu_dirty = false; 1281 } 1282 1283 static void do_whpx_cpu_synchronize_pre_loadvm(CPUState *cpu, 1284 run_on_cpu_data arg) 1285 { 1286 cpu->vcpu_dirty = true; 1287 } 1288 1289 /* 1290 * CPU support. 1291 */ 1292 1293 void whpx_cpu_synchronize_state(CPUState *cpu) 1294 { 1295 if (!cpu->vcpu_dirty) { 1296 run_on_cpu(cpu, do_whpx_cpu_synchronize_state, RUN_ON_CPU_NULL); 1297 } 1298 } 1299 1300 void whpx_cpu_synchronize_post_reset(CPUState *cpu) 1301 { 1302 run_on_cpu(cpu, do_whpx_cpu_synchronize_post_reset, RUN_ON_CPU_NULL); 1303 } 1304 1305 void whpx_cpu_synchronize_post_init(CPUState *cpu) 1306 { 1307 run_on_cpu(cpu, do_whpx_cpu_synchronize_post_init, RUN_ON_CPU_NULL); 1308 } 1309 1310 void whpx_cpu_synchronize_pre_loadvm(CPUState *cpu) 1311 { 1312 run_on_cpu(cpu, do_whpx_cpu_synchronize_pre_loadvm, RUN_ON_CPU_NULL); 1313 } 1314 1315 /* 1316 * Vcpu support. 1317 */ 1318 1319 static Error *whpx_migration_blocker; 1320 1321 static void whpx_cpu_update_state(void *opaque, bool running, RunState state) 1322 { 1323 CPUX86State *env = opaque; 1324 1325 if (running) { 1326 env->tsc_valid = false; 1327 } 1328 } 1329 1330 int whpx_init_vcpu(CPUState *cpu) 1331 { 1332 HRESULT hr; 1333 struct whpx_state *whpx = &whpx_global; 1334 struct whpx_vcpu *vcpu = NULL; 1335 Error *local_error = NULL; 1336 struct CPUX86State *env = (CPUArchState *)(cpu->env_ptr); 1337 X86CPU *x86_cpu = X86_CPU(cpu); 1338 UINT64 freq = 0; 1339 int ret; 1340 1341 /* Add migration blockers for all unsupported features of the 1342 * Windows Hypervisor Platform 1343 */ 1344 if (whpx_migration_blocker == NULL) { 1345 error_setg(&whpx_migration_blocker, 1346 "State blocked due to non-migratable CPUID feature support," 1347 "dirty memory tracking support, and XSAVE/XRSTOR support"); 1348 1349 if (migrate_add_blocker(whpx_migration_blocker, &local_error) < 0) { 1350 error_report_err(local_error); 1351 error_free(whpx_migration_blocker); 1352 ret = -EINVAL; 1353 goto error; 1354 } 1355 } 1356 1357 vcpu = g_malloc0(sizeof(struct whpx_vcpu)); 1358 1359 if (!vcpu) { 1360 error_report("WHPX: Failed to allocte VCPU context."); 1361 ret = -ENOMEM; 1362 goto error; 1363 } 1364 1365 hr = whp_dispatch.WHvEmulatorCreateEmulator( 1366 &whpx_emu_callbacks, 1367 &vcpu->emulator); 1368 if (FAILED(hr)) { 1369 error_report("WHPX: Failed to setup instruction completion support," 1370 " hr=%08lx", hr); 1371 ret = -EINVAL; 1372 goto error; 1373 } 1374 1375 hr = whp_dispatch.WHvCreateVirtualProcessor( 1376 whpx->partition, cpu->cpu_index, 0); 1377 if (FAILED(hr)) { 1378 error_report("WHPX: Failed to create a virtual processor," 1379 " hr=%08lx", hr); 1380 whp_dispatch.WHvEmulatorDestroyEmulator(vcpu->emulator); 1381 ret = -EINVAL; 1382 goto error; 1383 } 1384 1385 /* 1386 * vcpu's TSC frequency is either specified by user, or use the value 1387 * provided by Hyper-V if the former is not present. In the latter case, we 1388 * query it from Hyper-V and record in env->tsc_khz, so that vcpu's TSC 1389 * frequency can be migrated later via this field. 1390 */ 1391 if (!env->tsc_khz) { 1392 hr = whp_dispatch.WHvGetCapability( 1393 WHvCapabilityCodeProcessorClockFrequency, &freq, sizeof(freq), 1394 NULL); 1395 if (hr != WHV_E_UNKNOWN_CAPABILITY) { 1396 if (FAILED(hr)) { 1397 printf("WHPX: Failed to query tsc frequency, hr=0x%08lx\n", hr); 1398 } else { 1399 env->tsc_khz = freq / 1000; /* Hz to KHz */ 1400 } 1401 } 1402 } 1403 1404 env->apic_bus_freq = HYPERV_APIC_BUS_FREQUENCY; 1405 hr = whp_dispatch.WHvGetCapability( 1406 WHvCapabilityCodeInterruptClockFrequency, &freq, sizeof(freq), NULL); 1407 if (hr != WHV_E_UNKNOWN_CAPABILITY) { 1408 if (FAILED(hr)) { 1409 printf("WHPX: Failed to query apic bus frequency hr=0x%08lx\n", hr); 1410 } else { 1411 env->apic_bus_freq = freq; 1412 } 1413 } 1414 1415 /* 1416 * If the vmware cpuid frequency leaf option is set, and we have a valid 1417 * tsc value, trap the corresponding cpuid's. 1418 */ 1419 if (x86_cpu->vmware_cpuid_freq && env->tsc_khz) { 1420 UINT32 cpuidExitList[] = {1, 0x80000001, 0x40000000, 0x40000010}; 1421 1422 hr = whp_dispatch.WHvSetPartitionProperty( 1423 whpx->partition, 1424 WHvPartitionPropertyCodeCpuidExitList, 1425 cpuidExitList, 1426 RTL_NUMBER_OF(cpuidExitList) * sizeof(UINT32)); 1427 1428 if (FAILED(hr)) { 1429 error_report("WHPX: Failed to set partition CpuidExitList hr=%08lx", 1430 hr); 1431 ret = -EINVAL; 1432 goto error; 1433 } 1434 } 1435 1436 vcpu->interruptable = true; 1437 cpu->vcpu_dirty = true; 1438 cpu->hax_vcpu = (struct hax_vcpu_state *)vcpu; 1439 max_vcpu_index = max(max_vcpu_index, cpu->cpu_index); 1440 qemu_add_vm_change_state_handler(whpx_cpu_update_state, cpu->env_ptr); 1441 1442 return 0; 1443 1444 error: 1445 g_free(vcpu); 1446 1447 return ret; 1448 } 1449 1450 int whpx_vcpu_exec(CPUState *cpu) 1451 { 1452 int ret; 1453 int fatal; 1454 1455 for (;;) { 1456 if (cpu->exception_index >= EXCP_INTERRUPT) { 1457 ret = cpu->exception_index; 1458 cpu->exception_index = -1; 1459 break; 1460 } 1461 1462 fatal = whpx_vcpu_run(cpu); 1463 1464 if (fatal) { 1465 error_report("WHPX: Failed to exec a virtual processor"); 1466 abort(); 1467 } 1468 } 1469 1470 return ret; 1471 } 1472 1473 void whpx_destroy_vcpu(CPUState *cpu) 1474 { 1475 struct whpx_state *whpx = &whpx_global; 1476 struct whpx_vcpu *vcpu = get_whpx_vcpu(cpu); 1477 1478 whp_dispatch.WHvDeleteVirtualProcessor(whpx->partition, cpu->cpu_index); 1479 whp_dispatch.WHvEmulatorDestroyEmulator(vcpu->emulator); 1480 g_free(cpu->hax_vcpu); 1481 return; 1482 } 1483 1484 void whpx_vcpu_kick(CPUState *cpu) 1485 { 1486 struct whpx_state *whpx = &whpx_global; 1487 whp_dispatch.WHvCancelRunVirtualProcessor( 1488 whpx->partition, cpu->cpu_index, 0); 1489 } 1490 1491 /* 1492 * Memory support. 1493 */ 1494 1495 static void whpx_update_mapping(hwaddr start_pa, ram_addr_t size, 1496 void *host_va, int add, int rom, 1497 const char *name) 1498 { 1499 struct whpx_state *whpx = &whpx_global; 1500 HRESULT hr; 1501 1502 /* 1503 if (add) { 1504 printf("WHPX: ADD PA:%p Size:%p, Host:%p, %s, '%s'\n", 1505 (void*)start_pa, (void*)size, host_va, 1506 (rom ? "ROM" : "RAM"), name); 1507 } else { 1508 printf("WHPX: DEL PA:%p Size:%p, Host:%p, '%s'\n", 1509 (void*)start_pa, (void*)size, host_va, name); 1510 } 1511 */ 1512 1513 if (add) { 1514 hr = whp_dispatch.WHvMapGpaRange(whpx->partition, 1515 host_va, 1516 start_pa, 1517 size, 1518 (WHvMapGpaRangeFlagRead | 1519 WHvMapGpaRangeFlagExecute | 1520 (rom ? 0 : WHvMapGpaRangeFlagWrite))); 1521 } else { 1522 hr = whp_dispatch.WHvUnmapGpaRange(whpx->partition, 1523 start_pa, 1524 size); 1525 } 1526 1527 if (FAILED(hr)) { 1528 error_report("WHPX: Failed to %s GPA range '%s' PA:%p, Size:%p bytes," 1529 " Host:%p, hr=%08lx", 1530 (add ? "MAP" : "UNMAP"), name, 1531 (void *)(uintptr_t)start_pa, (void *)size, host_va, hr); 1532 } 1533 } 1534 1535 static void whpx_process_section(MemoryRegionSection *section, int add) 1536 { 1537 MemoryRegion *mr = section->mr; 1538 hwaddr start_pa = section->offset_within_address_space; 1539 ram_addr_t size = int128_get64(section->size); 1540 unsigned int delta; 1541 uint64_t host_va; 1542 1543 if (!memory_region_is_ram(mr)) { 1544 return; 1545 } 1546 1547 delta = qemu_real_host_page_size - (start_pa & ~qemu_real_host_page_mask); 1548 delta &= ~qemu_real_host_page_mask; 1549 if (delta > size) { 1550 return; 1551 } 1552 start_pa += delta; 1553 size -= delta; 1554 size &= qemu_real_host_page_mask; 1555 if (!size || (start_pa & ~qemu_real_host_page_mask)) { 1556 return; 1557 } 1558 1559 host_va = (uintptr_t)memory_region_get_ram_ptr(mr) 1560 + section->offset_within_region + delta; 1561 1562 whpx_update_mapping(start_pa, size, (void *)(uintptr_t)host_va, add, 1563 memory_region_is_rom(mr), mr->name); 1564 } 1565 1566 static void whpx_region_add(MemoryListener *listener, 1567 MemoryRegionSection *section) 1568 { 1569 memory_region_ref(section->mr); 1570 whpx_process_section(section, 1); 1571 } 1572 1573 static void whpx_region_del(MemoryListener *listener, 1574 MemoryRegionSection *section) 1575 { 1576 whpx_process_section(section, 0); 1577 memory_region_unref(section->mr); 1578 } 1579 1580 static void whpx_transaction_begin(MemoryListener *listener) 1581 { 1582 } 1583 1584 static void whpx_transaction_commit(MemoryListener *listener) 1585 { 1586 } 1587 1588 static void whpx_log_sync(MemoryListener *listener, 1589 MemoryRegionSection *section) 1590 { 1591 MemoryRegion *mr = section->mr; 1592 1593 if (!memory_region_is_ram(mr)) { 1594 return; 1595 } 1596 1597 memory_region_set_dirty(mr, 0, int128_get64(section->size)); 1598 } 1599 1600 static MemoryListener whpx_memory_listener = { 1601 .begin = whpx_transaction_begin, 1602 .commit = whpx_transaction_commit, 1603 .region_add = whpx_region_add, 1604 .region_del = whpx_region_del, 1605 .log_sync = whpx_log_sync, 1606 .priority = 10, 1607 }; 1608 1609 static void whpx_memory_init(void) 1610 { 1611 memory_listener_register(&whpx_memory_listener, &address_space_memory); 1612 } 1613 1614 /* 1615 * Load the functions from the given library, using the given handle. If a 1616 * handle is provided, it is used, otherwise the library is opened. The 1617 * handle will be updated on return with the opened one. 1618 */ 1619 static bool load_whp_dispatch_fns(HMODULE *handle, 1620 WHPFunctionList function_list) 1621 { 1622 HMODULE hLib = *handle; 1623 1624 #define WINHV_PLATFORM_DLL "WinHvPlatform.dll" 1625 #define WINHV_EMULATION_DLL "WinHvEmulation.dll" 1626 #define WHP_LOAD_FIELD_OPTIONAL(return_type, function_name, signature) \ 1627 whp_dispatch.function_name = \ 1628 (function_name ## _t)GetProcAddress(hLib, #function_name); \ 1629 1630 #define WHP_LOAD_FIELD(return_type, function_name, signature) \ 1631 whp_dispatch.function_name = \ 1632 (function_name ## _t)GetProcAddress(hLib, #function_name); \ 1633 if (!whp_dispatch.function_name) { \ 1634 error_report("Could not load function %s", #function_name); \ 1635 goto error; \ 1636 } \ 1637 1638 #define WHP_LOAD_LIB(lib_name, handle_lib) \ 1639 if (!handle_lib) { \ 1640 handle_lib = LoadLibrary(lib_name); \ 1641 if (!handle_lib) { \ 1642 error_report("Could not load library %s.", lib_name); \ 1643 goto error; \ 1644 } \ 1645 } \ 1646 1647 switch (function_list) { 1648 case WINHV_PLATFORM_FNS_DEFAULT: 1649 WHP_LOAD_LIB(WINHV_PLATFORM_DLL, hLib) 1650 LIST_WINHVPLATFORM_FUNCTIONS(WHP_LOAD_FIELD) 1651 break; 1652 1653 case WINHV_EMULATION_FNS_DEFAULT: 1654 WHP_LOAD_LIB(WINHV_EMULATION_DLL, hLib) 1655 LIST_WINHVEMULATION_FUNCTIONS(WHP_LOAD_FIELD) 1656 break; 1657 1658 case WINHV_PLATFORM_FNS_SUPPLEMENTAL: 1659 WHP_LOAD_LIB(WINHV_PLATFORM_DLL, hLib) 1660 LIST_WINHVPLATFORM_FUNCTIONS_SUPPLEMENTAL(WHP_LOAD_FIELD_OPTIONAL) 1661 break; 1662 } 1663 1664 *handle = hLib; 1665 return true; 1666 1667 error: 1668 if (hLib) { 1669 FreeLibrary(hLib); 1670 } 1671 1672 return false; 1673 } 1674 1675 static void whpx_set_kernel_irqchip(Object *obj, Visitor *v, 1676 const char *name, void *opaque, 1677 Error **errp) 1678 { 1679 struct whpx_state *whpx = &whpx_global; 1680 OnOffSplit mode; 1681 1682 if (!visit_type_OnOffSplit(v, name, &mode, errp)) { 1683 return; 1684 } 1685 1686 switch (mode) { 1687 case ON_OFF_SPLIT_ON: 1688 whpx->kernel_irqchip_allowed = true; 1689 whpx->kernel_irqchip_required = true; 1690 break; 1691 1692 case ON_OFF_SPLIT_OFF: 1693 whpx->kernel_irqchip_allowed = false; 1694 whpx->kernel_irqchip_required = false; 1695 break; 1696 1697 case ON_OFF_SPLIT_SPLIT: 1698 error_setg(errp, "WHPX: split irqchip currently not supported"); 1699 error_append_hint(errp, 1700 "Try without kernel-irqchip or with kernel-irqchip=on|off"); 1701 break; 1702 1703 default: 1704 /* 1705 * The value was checked in visit_type_OnOffSplit() above. If 1706 * we get here, then something is wrong in QEMU. 1707 */ 1708 abort(); 1709 } 1710 } 1711 1712 /* 1713 * Partition support 1714 */ 1715 1716 static int whpx_accel_init(MachineState *ms) 1717 { 1718 struct whpx_state *whpx; 1719 int ret; 1720 HRESULT hr; 1721 WHV_CAPABILITY whpx_cap; 1722 UINT32 whpx_cap_size; 1723 WHV_PARTITION_PROPERTY prop; 1724 UINT32 cpuidExitList[] = {1, 0x80000001}; 1725 WHV_CAPABILITY_FEATURES features = {0}; 1726 1727 whpx = &whpx_global; 1728 1729 if (!init_whp_dispatch()) { 1730 ret = -ENOSYS; 1731 goto error; 1732 } 1733 1734 whpx->mem_quota = ms->ram_size; 1735 1736 hr = whp_dispatch.WHvGetCapability( 1737 WHvCapabilityCodeHypervisorPresent, &whpx_cap, 1738 sizeof(whpx_cap), &whpx_cap_size); 1739 if (FAILED(hr) || !whpx_cap.HypervisorPresent) { 1740 error_report("WHPX: No accelerator found, hr=%08lx", hr); 1741 ret = -ENOSPC; 1742 goto error; 1743 } 1744 1745 hr = whp_dispatch.WHvGetCapability( 1746 WHvCapabilityCodeFeatures, &features, sizeof(features), NULL); 1747 if (FAILED(hr)) { 1748 error_report("WHPX: Failed to query capabilities, hr=%08lx", hr); 1749 ret = -EINVAL; 1750 goto error; 1751 } 1752 1753 hr = whp_dispatch.WHvCreatePartition(&whpx->partition); 1754 if (FAILED(hr)) { 1755 error_report("WHPX: Failed to create partition, hr=%08lx", hr); 1756 ret = -EINVAL; 1757 goto error; 1758 } 1759 1760 memset(&prop, 0, sizeof(WHV_PARTITION_PROPERTY)); 1761 prop.ProcessorCount = ms->smp.cpus; 1762 hr = whp_dispatch.WHvSetPartitionProperty( 1763 whpx->partition, 1764 WHvPartitionPropertyCodeProcessorCount, 1765 &prop, 1766 sizeof(WHV_PARTITION_PROPERTY)); 1767 1768 if (FAILED(hr)) { 1769 error_report("WHPX: Failed to set partition core count to %d," 1770 " hr=%08lx", ms->smp.cores, hr); 1771 ret = -EINVAL; 1772 goto error; 1773 } 1774 1775 /* 1776 * Error out if WHP doesn't support apic emulation and user is requiring 1777 * it. 1778 */ 1779 if (whpx->kernel_irqchip_required && (!features.LocalApicEmulation || 1780 !whp_dispatch.WHvSetVirtualProcessorInterruptControllerState2)) { 1781 error_report("WHPX: kernel irqchip requested, but unavailable. " 1782 "Try without kernel-irqchip or with kernel-irqchip=off"); 1783 ret = -EINVAL; 1784 goto error; 1785 } 1786 1787 if (whpx->kernel_irqchip_allowed && features.LocalApicEmulation && 1788 whp_dispatch.WHvSetVirtualProcessorInterruptControllerState2) { 1789 WHV_X64_LOCAL_APIC_EMULATION_MODE mode = 1790 WHvX64LocalApicEmulationModeXApic; 1791 printf("WHPX: setting APIC emulation mode in the hypervisor\n"); 1792 hr = whp_dispatch.WHvSetPartitionProperty( 1793 whpx->partition, 1794 WHvPartitionPropertyCodeLocalApicEmulationMode, 1795 &mode, 1796 sizeof(mode)); 1797 if (FAILED(hr)) { 1798 error_report("WHPX: Failed to enable kernel irqchip hr=%08lx", hr); 1799 if (whpx->kernel_irqchip_required) { 1800 error_report("WHPX: kernel irqchip requested, but unavailable"); 1801 ret = -EINVAL; 1802 goto error; 1803 } 1804 } else { 1805 whpx->apic_in_platform = true; 1806 } 1807 } 1808 1809 /* Register for MSR and CPUID exits */ 1810 memset(&prop, 0, sizeof(WHV_PARTITION_PROPERTY)); 1811 prop.ExtendedVmExits.X64MsrExit = 1; 1812 prop.ExtendedVmExits.X64CpuidExit = 1; 1813 if (whpx_apic_in_platform()) { 1814 prop.ExtendedVmExits.X64ApicInitSipiExitTrap = 1; 1815 } 1816 1817 hr = whp_dispatch.WHvSetPartitionProperty( 1818 whpx->partition, 1819 WHvPartitionPropertyCodeExtendedVmExits, 1820 &prop, 1821 sizeof(WHV_PARTITION_PROPERTY)); 1822 if (FAILED(hr)) { 1823 error_report("WHPX: Failed to enable MSR & CPUIDexit, hr=%08lx", hr); 1824 ret = -EINVAL; 1825 goto error; 1826 } 1827 1828 hr = whp_dispatch.WHvSetPartitionProperty( 1829 whpx->partition, 1830 WHvPartitionPropertyCodeCpuidExitList, 1831 cpuidExitList, 1832 RTL_NUMBER_OF(cpuidExitList) * sizeof(UINT32)); 1833 1834 if (FAILED(hr)) { 1835 error_report("WHPX: Failed to set partition CpuidExitList hr=%08lx", 1836 hr); 1837 ret = -EINVAL; 1838 goto error; 1839 } 1840 1841 hr = whp_dispatch.WHvSetupPartition(whpx->partition); 1842 if (FAILED(hr)) { 1843 error_report("WHPX: Failed to setup partition, hr=%08lx", hr); 1844 ret = -EINVAL; 1845 goto error; 1846 } 1847 1848 whpx_memory_init(); 1849 1850 printf("Windows Hypervisor Platform accelerator is operational\n"); 1851 return 0; 1852 1853 error: 1854 1855 if (NULL != whpx->partition) { 1856 whp_dispatch.WHvDeletePartition(whpx->partition); 1857 whpx->partition = NULL; 1858 } 1859 1860 return ret; 1861 } 1862 1863 int whpx_enabled(void) 1864 { 1865 return whpx_allowed; 1866 } 1867 1868 bool whpx_apic_in_platform(void) { 1869 return whpx_global.apic_in_platform; 1870 } 1871 1872 static void whpx_accel_class_init(ObjectClass *oc, void *data) 1873 { 1874 AccelClass *ac = ACCEL_CLASS(oc); 1875 ac->name = "WHPX"; 1876 ac->init_machine = whpx_accel_init; 1877 ac->allowed = &whpx_allowed; 1878 1879 object_class_property_add(oc, "kernel-irqchip", "on|off|split", 1880 NULL, whpx_set_kernel_irqchip, 1881 NULL, NULL); 1882 object_class_property_set_description(oc, "kernel-irqchip", 1883 "Configure WHPX in-kernel irqchip"); 1884 } 1885 1886 static void whpx_accel_instance_init(Object *obj) 1887 { 1888 struct whpx_state *whpx = &whpx_global; 1889 1890 memset(whpx, 0, sizeof(struct whpx_state)); 1891 /* Turn on kernel-irqchip, by default */ 1892 whpx->kernel_irqchip_allowed = true; 1893 } 1894 1895 static const TypeInfo whpx_accel_type = { 1896 .name = ACCEL_CLASS_NAME("whpx"), 1897 .parent = TYPE_ACCEL, 1898 .instance_init = whpx_accel_instance_init, 1899 .class_init = whpx_accel_class_init, 1900 }; 1901 1902 static void whpx_type_init(void) 1903 { 1904 type_register_static(&whpx_accel_type); 1905 } 1906 1907 bool init_whp_dispatch(void) 1908 { 1909 if (whp_dispatch_initialized) { 1910 return true; 1911 } 1912 1913 if (!load_whp_dispatch_fns(&hWinHvPlatform, WINHV_PLATFORM_FNS_DEFAULT)) { 1914 goto error; 1915 } 1916 1917 if (!load_whp_dispatch_fns(&hWinHvEmulation, WINHV_EMULATION_FNS_DEFAULT)) { 1918 goto error; 1919 } 1920 1921 assert(load_whp_dispatch_fns(&hWinHvPlatform, 1922 WINHV_PLATFORM_FNS_SUPPLEMENTAL)); 1923 whp_dispatch_initialized = true; 1924 1925 return true; 1926 error: 1927 if (hWinHvPlatform) { 1928 FreeLibrary(hWinHvPlatform); 1929 } 1930 1931 if (hWinHvEmulation) { 1932 FreeLibrary(hWinHvEmulation); 1933 } 1934 1935 return false; 1936 } 1937 1938 type_init(whpx_type_init); 1939