1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Copyright (C) 2012,2013 - ARM Ltd 4 * Author: Marc Zyngier <marc.zyngier@arm.com> 5 * 6 * Derived from arch/arm/include/kvm_emulate.h 7 * Copyright (C) 2012 - Virtual Open Systems and Columbia University 8 * Author: Christoffer Dall <c.dall@virtualopensystems.com> 9 */ 10 11 #ifndef __ARM64_KVM_EMULATE_H__ 12 #define __ARM64_KVM_EMULATE_H__ 13 14 #include <linux/kvm_host.h> 15 16 #include <asm/debug-monitors.h> 17 #include <asm/esr.h> 18 #include <asm/kvm_arm.h> 19 #include <asm/kvm_hyp.h> 20 #include <asm/kvm_nested.h> 21 #include <asm/ptrace.h> 22 #include <asm/cputype.h> 23 #include <asm/virt.h> 24 25 #define CURRENT_EL_SP_EL0_VECTOR 0x0 26 #define CURRENT_EL_SP_ELx_VECTOR 0x200 27 #define LOWER_EL_AArch64_VECTOR 0x400 28 #define LOWER_EL_AArch32_VECTOR 0x600 29 30 enum exception_type { 31 except_type_sync = 0, 32 except_type_irq = 0x80, 33 except_type_fiq = 0x100, 34 except_type_serror = 0x180, 35 }; 36 37 #define kvm_exception_type_names \ 38 { except_type_sync, "SYNC" }, \ 39 { except_type_irq, "IRQ" }, \ 40 { except_type_fiq, "FIQ" }, \ 41 { except_type_serror, "SERROR" } 42 43 bool kvm_condition_valid32(const struct kvm_vcpu *vcpu); 44 void kvm_skip_instr32(struct kvm_vcpu *vcpu); 45 46 void kvm_inject_undefined(struct kvm_vcpu *vcpu); 47 void kvm_inject_vabt(struct kvm_vcpu *vcpu); 48 void kvm_inject_dabt(struct kvm_vcpu *vcpu, unsigned long addr); 49 void kvm_inject_pabt(struct kvm_vcpu *vcpu, unsigned long addr); 50 void kvm_inject_size_fault(struct kvm_vcpu *vcpu); 51 52 void kvm_vcpu_wfi(struct kvm_vcpu *vcpu); 53 54 void kvm_emulate_nested_eret(struct kvm_vcpu *vcpu); 55 int kvm_inject_nested_sync(struct kvm_vcpu *vcpu, u64 esr_el2); 56 int kvm_inject_nested_irq(struct kvm_vcpu *vcpu); 57 58 #if defined(__KVM_VHE_HYPERVISOR__) || defined(__KVM_NVHE_HYPERVISOR__) 59 static __always_inline bool vcpu_el1_is_32bit(struct kvm_vcpu *vcpu) 60 { 61 return !(vcpu->arch.hcr_el2 & HCR_RW); 62 } 63 #else 64 static __always_inline bool vcpu_el1_is_32bit(struct kvm_vcpu *vcpu) 65 { 66 return vcpu_has_feature(vcpu, KVM_ARM_VCPU_EL1_32BIT); 67 } 68 #endif 69 70 static inline void vcpu_reset_hcr(struct kvm_vcpu *vcpu) 71 { 72 vcpu->arch.hcr_el2 = HCR_GUEST_FLAGS; 73 if (has_vhe() || has_hvhe()) 74 vcpu->arch.hcr_el2 |= HCR_E2H; 75 if (cpus_have_final_cap(ARM64_HAS_RAS_EXTN)) { 76 /* route synchronous external abort exceptions to EL2 */ 77 vcpu->arch.hcr_el2 |= HCR_TEA; 78 /* trap error record accesses */ 79 vcpu->arch.hcr_el2 |= HCR_TERR; 80 } 81 82 if (cpus_have_final_cap(ARM64_HAS_STAGE2_FWB)) { 83 vcpu->arch.hcr_el2 |= HCR_FWB; 84 } else { 85 /* 86 * For non-FWB CPUs, we trap VM ops (HCR_EL2.TVM) until M+C 87 * get set in SCTLR_EL1 such that we can detect when the guest 88 * MMU gets turned on and do the necessary cache maintenance 89 * then. 90 */ 91 vcpu->arch.hcr_el2 |= HCR_TVM; 92 } 93 94 if (cpus_have_final_cap(ARM64_HAS_EVT) && 95 !cpus_have_final_cap(ARM64_MISMATCHED_CACHE_TYPE)) 96 vcpu->arch.hcr_el2 |= HCR_TID4; 97 else 98 vcpu->arch.hcr_el2 |= HCR_TID2; 99 100 if (vcpu_el1_is_32bit(vcpu)) 101 vcpu->arch.hcr_el2 &= ~HCR_RW; 102 103 if (kvm_has_mte(vcpu->kvm)) 104 vcpu->arch.hcr_el2 |= HCR_ATA; 105 } 106 107 static inline unsigned long *vcpu_hcr(struct kvm_vcpu *vcpu) 108 { 109 return (unsigned long *)&vcpu->arch.hcr_el2; 110 } 111 112 static inline void vcpu_clear_wfx_traps(struct kvm_vcpu *vcpu) 113 { 114 vcpu->arch.hcr_el2 &= ~HCR_TWE; 115 if (atomic_read(&vcpu->arch.vgic_cpu.vgic_v3.its_vpe.vlpi_count) || 116 vcpu->kvm->arch.vgic.nassgireq) 117 vcpu->arch.hcr_el2 &= ~HCR_TWI; 118 else 119 vcpu->arch.hcr_el2 |= HCR_TWI; 120 } 121 122 static inline void vcpu_set_wfx_traps(struct kvm_vcpu *vcpu) 123 { 124 vcpu->arch.hcr_el2 |= HCR_TWE; 125 vcpu->arch.hcr_el2 |= HCR_TWI; 126 } 127 128 static inline void vcpu_ptrauth_enable(struct kvm_vcpu *vcpu) 129 { 130 vcpu->arch.hcr_el2 |= (HCR_API | HCR_APK); 131 } 132 133 static inline void vcpu_ptrauth_disable(struct kvm_vcpu *vcpu) 134 { 135 vcpu->arch.hcr_el2 &= ~(HCR_API | HCR_APK); 136 } 137 138 static inline unsigned long vcpu_get_vsesr(struct kvm_vcpu *vcpu) 139 { 140 return vcpu->arch.vsesr_el2; 141 } 142 143 static inline void vcpu_set_vsesr(struct kvm_vcpu *vcpu, u64 vsesr) 144 { 145 vcpu->arch.vsesr_el2 = vsesr; 146 } 147 148 static __always_inline unsigned long *vcpu_pc(const struct kvm_vcpu *vcpu) 149 { 150 return (unsigned long *)&vcpu_gp_regs(vcpu)->pc; 151 } 152 153 static __always_inline unsigned long *vcpu_cpsr(const struct kvm_vcpu *vcpu) 154 { 155 return (unsigned long *)&vcpu_gp_regs(vcpu)->pstate; 156 } 157 158 static __always_inline bool vcpu_mode_is_32bit(const struct kvm_vcpu *vcpu) 159 { 160 return !!(*vcpu_cpsr(vcpu) & PSR_MODE32_BIT); 161 } 162 163 static __always_inline bool kvm_condition_valid(const struct kvm_vcpu *vcpu) 164 { 165 if (vcpu_mode_is_32bit(vcpu)) 166 return kvm_condition_valid32(vcpu); 167 168 return true; 169 } 170 171 static inline void vcpu_set_thumb(struct kvm_vcpu *vcpu) 172 { 173 *vcpu_cpsr(vcpu) |= PSR_AA32_T_BIT; 174 } 175 176 /* 177 * vcpu_get_reg and vcpu_set_reg should always be passed a register number 178 * coming from a read of ESR_EL2. Otherwise, it may give the wrong result on 179 * AArch32 with banked registers. 180 */ 181 static __always_inline unsigned long vcpu_get_reg(const struct kvm_vcpu *vcpu, 182 u8 reg_num) 183 { 184 return (reg_num == 31) ? 0 : vcpu_gp_regs(vcpu)->regs[reg_num]; 185 } 186 187 static __always_inline void vcpu_set_reg(struct kvm_vcpu *vcpu, u8 reg_num, 188 unsigned long val) 189 { 190 if (reg_num != 31) 191 vcpu_gp_regs(vcpu)->regs[reg_num] = val; 192 } 193 194 static inline bool vcpu_is_el2_ctxt(const struct kvm_cpu_context *ctxt) 195 { 196 switch (ctxt->regs.pstate & (PSR_MODE32_BIT | PSR_MODE_MASK)) { 197 case PSR_MODE_EL2h: 198 case PSR_MODE_EL2t: 199 return true; 200 default: 201 return false; 202 } 203 } 204 205 static inline bool vcpu_is_el2(const struct kvm_vcpu *vcpu) 206 { 207 return vcpu_is_el2_ctxt(&vcpu->arch.ctxt); 208 } 209 210 static inline bool __vcpu_el2_e2h_is_set(const struct kvm_cpu_context *ctxt) 211 { 212 return (!cpus_have_final_cap(ARM64_HAS_HCR_NV1) || 213 (ctxt_sys_reg(ctxt, HCR_EL2) & HCR_E2H)); 214 } 215 216 static inline bool vcpu_el2_e2h_is_set(const struct kvm_vcpu *vcpu) 217 { 218 return __vcpu_el2_e2h_is_set(&vcpu->arch.ctxt); 219 } 220 221 static inline bool __vcpu_el2_tge_is_set(const struct kvm_cpu_context *ctxt) 222 { 223 return ctxt_sys_reg(ctxt, HCR_EL2) & HCR_TGE; 224 } 225 226 static inline bool vcpu_el2_tge_is_set(const struct kvm_vcpu *vcpu) 227 { 228 return __vcpu_el2_tge_is_set(&vcpu->arch.ctxt); 229 } 230 231 static inline bool __is_hyp_ctxt(const struct kvm_cpu_context *ctxt) 232 { 233 /* 234 * We are in a hypervisor context if the vcpu mode is EL2 or 235 * E2H and TGE bits are set. The latter means we are in the user space 236 * of the VHE kernel. ARMv8.1 ARM describes this as 'InHost' 237 * 238 * Note that the HCR_EL2.{E2H,TGE}={0,1} isn't really handled in the 239 * rest of the KVM code, and will result in a misbehaving guest. 240 */ 241 return vcpu_is_el2_ctxt(ctxt) || 242 (__vcpu_el2_e2h_is_set(ctxt) && __vcpu_el2_tge_is_set(ctxt)) || 243 __vcpu_el2_tge_is_set(ctxt); 244 } 245 246 static inline bool is_hyp_ctxt(const struct kvm_vcpu *vcpu) 247 { 248 return vcpu_has_nv(vcpu) && __is_hyp_ctxt(&vcpu->arch.ctxt); 249 } 250 251 /* 252 * The layout of SPSR for an AArch32 state is different when observed from an 253 * AArch64 SPSR_ELx or an AArch32 SPSR_*. This function generates the AArch32 254 * view given an AArch64 view. 255 * 256 * In ARM DDI 0487E.a see: 257 * 258 * - The AArch64 view (SPSR_EL2) in section C5.2.18, page C5-426 259 * - The AArch32 view (SPSR_abt) in section G8.2.126, page G8-6256 260 * - The AArch32 view (SPSR_und) in section G8.2.132, page G8-6280 261 * 262 * Which show the following differences: 263 * 264 * | Bit | AA64 | AA32 | Notes | 265 * +-----+------+------+-----------------------------| 266 * | 24 | DIT | J | J is RES0 in ARMv8 | 267 * | 21 | SS | DIT | SS doesn't exist in AArch32 | 268 * 269 * ... and all other bits are (currently) common. 270 */ 271 static inline unsigned long host_spsr_to_spsr32(unsigned long spsr) 272 { 273 const unsigned long overlap = BIT(24) | BIT(21); 274 unsigned long dit = !!(spsr & PSR_AA32_DIT_BIT); 275 276 spsr &= ~overlap; 277 278 spsr |= dit << 21; 279 280 return spsr; 281 } 282 283 static inline bool vcpu_mode_priv(const struct kvm_vcpu *vcpu) 284 { 285 u32 mode; 286 287 if (vcpu_mode_is_32bit(vcpu)) { 288 mode = *vcpu_cpsr(vcpu) & PSR_AA32_MODE_MASK; 289 return mode > PSR_AA32_MODE_USR; 290 } 291 292 mode = *vcpu_cpsr(vcpu) & PSR_MODE_MASK; 293 294 return mode != PSR_MODE_EL0t; 295 } 296 297 static __always_inline u64 kvm_vcpu_get_esr(const struct kvm_vcpu *vcpu) 298 { 299 return vcpu->arch.fault.esr_el2; 300 } 301 302 static __always_inline int kvm_vcpu_get_condition(const struct kvm_vcpu *vcpu) 303 { 304 u64 esr = kvm_vcpu_get_esr(vcpu); 305 306 if (esr & ESR_ELx_CV) 307 return (esr & ESR_ELx_COND_MASK) >> ESR_ELx_COND_SHIFT; 308 309 return -1; 310 } 311 312 static __always_inline unsigned long kvm_vcpu_get_hfar(const struct kvm_vcpu *vcpu) 313 { 314 return vcpu->arch.fault.far_el2; 315 } 316 317 static __always_inline phys_addr_t kvm_vcpu_get_fault_ipa(const struct kvm_vcpu *vcpu) 318 { 319 return ((phys_addr_t)vcpu->arch.fault.hpfar_el2 & HPFAR_MASK) << 8; 320 } 321 322 static inline u64 kvm_vcpu_get_disr(const struct kvm_vcpu *vcpu) 323 { 324 return vcpu->arch.fault.disr_el1; 325 } 326 327 static inline u32 kvm_vcpu_hvc_get_imm(const struct kvm_vcpu *vcpu) 328 { 329 return kvm_vcpu_get_esr(vcpu) & ESR_ELx_xVC_IMM_MASK; 330 } 331 332 static __always_inline bool kvm_vcpu_dabt_isvalid(const struct kvm_vcpu *vcpu) 333 { 334 return !!(kvm_vcpu_get_esr(vcpu) & ESR_ELx_ISV); 335 } 336 337 static inline unsigned long kvm_vcpu_dabt_iss_nisv_sanitized(const struct kvm_vcpu *vcpu) 338 { 339 return kvm_vcpu_get_esr(vcpu) & (ESR_ELx_CM | ESR_ELx_WNR | ESR_ELx_FSC); 340 } 341 342 static inline bool kvm_vcpu_dabt_issext(const struct kvm_vcpu *vcpu) 343 { 344 return !!(kvm_vcpu_get_esr(vcpu) & ESR_ELx_SSE); 345 } 346 347 static inline bool kvm_vcpu_dabt_issf(const struct kvm_vcpu *vcpu) 348 { 349 return !!(kvm_vcpu_get_esr(vcpu) & ESR_ELx_SF); 350 } 351 352 static __always_inline int kvm_vcpu_dabt_get_rd(const struct kvm_vcpu *vcpu) 353 { 354 return (kvm_vcpu_get_esr(vcpu) & ESR_ELx_SRT_MASK) >> ESR_ELx_SRT_SHIFT; 355 } 356 357 static __always_inline bool kvm_vcpu_abt_iss1tw(const struct kvm_vcpu *vcpu) 358 { 359 return !!(kvm_vcpu_get_esr(vcpu) & ESR_ELx_S1PTW); 360 } 361 362 /* Always check for S1PTW *before* using this. */ 363 static __always_inline bool kvm_vcpu_dabt_iswrite(const struct kvm_vcpu *vcpu) 364 { 365 return kvm_vcpu_get_esr(vcpu) & ESR_ELx_WNR; 366 } 367 368 static inline bool kvm_vcpu_dabt_is_cm(const struct kvm_vcpu *vcpu) 369 { 370 return !!(kvm_vcpu_get_esr(vcpu) & ESR_ELx_CM); 371 } 372 373 static __always_inline unsigned int kvm_vcpu_dabt_get_as(const struct kvm_vcpu *vcpu) 374 { 375 return 1 << ((kvm_vcpu_get_esr(vcpu) & ESR_ELx_SAS) >> ESR_ELx_SAS_SHIFT); 376 } 377 378 /* This one is not specific to Data Abort */ 379 static __always_inline bool kvm_vcpu_trap_il_is32bit(const struct kvm_vcpu *vcpu) 380 { 381 return !!(kvm_vcpu_get_esr(vcpu) & ESR_ELx_IL); 382 } 383 384 static __always_inline u8 kvm_vcpu_trap_get_class(const struct kvm_vcpu *vcpu) 385 { 386 return ESR_ELx_EC(kvm_vcpu_get_esr(vcpu)); 387 } 388 389 static inline bool kvm_vcpu_trap_is_iabt(const struct kvm_vcpu *vcpu) 390 { 391 return kvm_vcpu_trap_get_class(vcpu) == ESR_ELx_EC_IABT_LOW; 392 } 393 394 static inline bool kvm_vcpu_trap_is_exec_fault(const struct kvm_vcpu *vcpu) 395 { 396 return kvm_vcpu_trap_is_iabt(vcpu) && !kvm_vcpu_abt_iss1tw(vcpu); 397 } 398 399 static __always_inline u8 kvm_vcpu_trap_get_fault(const struct kvm_vcpu *vcpu) 400 { 401 return kvm_vcpu_get_esr(vcpu) & ESR_ELx_FSC; 402 } 403 404 static inline 405 bool kvm_vcpu_trap_is_permission_fault(const struct kvm_vcpu *vcpu) 406 { 407 return esr_fsc_is_permission_fault(kvm_vcpu_get_esr(vcpu)); 408 } 409 410 static inline 411 bool kvm_vcpu_trap_is_translation_fault(const struct kvm_vcpu *vcpu) 412 { 413 return esr_fsc_is_translation_fault(kvm_vcpu_get_esr(vcpu)); 414 } 415 416 static inline 417 u64 kvm_vcpu_trap_get_perm_fault_granule(const struct kvm_vcpu *vcpu) 418 { 419 unsigned long esr = kvm_vcpu_get_esr(vcpu); 420 421 BUG_ON(!esr_fsc_is_permission_fault(esr)); 422 return BIT(ARM64_HW_PGTABLE_LEVEL_SHIFT(esr & ESR_ELx_FSC_LEVEL)); 423 } 424 425 static __always_inline bool kvm_vcpu_abt_issea(const struct kvm_vcpu *vcpu) 426 { 427 switch (kvm_vcpu_trap_get_fault(vcpu)) { 428 case ESR_ELx_FSC_EXTABT: 429 case ESR_ELx_FSC_SEA_TTW(-1) ... ESR_ELx_FSC_SEA_TTW(3): 430 case ESR_ELx_FSC_SECC: 431 case ESR_ELx_FSC_SECC_TTW(-1) ... ESR_ELx_FSC_SECC_TTW(3): 432 return true; 433 default: 434 return false; 435 } 436 } 437 438 static __always_inline int kvm_vcpu_sys_get_rt(struct kvm_vcpu *vcpu) 439 { 440 u64 esr = kvm_vcpu_get_esr(vcpu); 441 return ESR_ELx_SYS64_ISS_RT(esr); 442 } 443 444 static inline bool kvm_is_write_fault(struct kvm_vcpu *vcpu) 445 { 446 if (kvm_vcpu_abt_iss1tw(vcpu)) { 447 /* 448 * Only a permission fault on a S1PTW should be 449 * considered as a write. Otherwise, page tables baked 450 * in a read-only memslot will result in an exception 451 * being delivered in the guest. 452 * 453 * The drawback is that we end-up faulting twice if the 454 * guest is using any of HW AF/DB: a translation fault 455 * to map the page containing the PT (read only at 456 * first), then a permission fault to allow the flags 457 * to be set. 458 */ 459 return kvm_vcpu_trap_is_permission_fault(vcpu); 460 } 461 462 if (kvm_vcpu_trap_is_iabt(vcpu)) 463 return false; 464 465 return kvm_vcpu_dabt_iswrite(vcpu); 466 } 467 468 static inline unsigned long kvm_vcpu_get_mpidr_aff(struct kvm_vcpu *vcpu) 469 { 470 return __vcpu_sys_reg(vcpu, MPIDR_EL1) & MPIDR_HWID_BITMASK; 471 } 472 473 static inline void kvm_vcpu_set_be(struct kvm_vcpu *vcpu) 474 { 475 if (vcpu_mode_is_32bit(vcpu)) { 476 *vcpu_cpsr(vcpu) |= PSR_AA32_E_BIT; 477 } else { 478 u64 sctlr = vcpu_read_sys_reg(vcpu, SCTLR_EL1); 479 sctlr |= SCTLR_ELx_EE; 480 vcpu_write_sys_reg(vcpu, sctlr, SCTLR_EL1); 481 } 482 } 483 484 static inline bool kvm_vcpu_is_be(struct kvm_vcpu *vcpu) 485 { 486 if (vcpu_mode_is_32bit(vcpu)) 487 return !!(*vcpu_cpsr(vcpu) & PSR_AA32_E_BIT); 488 489 if (vcpu_mode_priv(vcpu)) 490 return !!(vcpu_read_sys_reg(vcpu, SCTLR_EL1) & SCTLR_ELx_EE); 491 else 492 return !!(vcpu_read_sys_reg(vcpu, SCTLR_EL1) & SCTLR_EL1_E0E); 493 } 494 495 static inline unsigned long vcpu_data_guest_to_host(struct kvm_vcpu *vcpu, 496 unsigned long data, 497 unsigned int len) 498 { 499 if (kvm_vcpu_is_be(vcpu)) { 500 switch (len) { 501 case 1: 502 return data & 0xff; 503 case 2: 504 return be16_to_cpu(data & 0xffff); 505 case 4: 506 return be32_to_cpu(data & 0xffffffff); 507 default: 508 return be64_to_cpu(data); 509 } 510 } else { 511 switch (len) { 512 case 1: 513 return data & 0xff; 514 case 2: 515 return le16_to_cpu(data & 0xffff); 516 case 4: 517 return le32_to_cpu(data & 0xffffffff); 518 default: 519 return le64_to_cpu(data); 520 } 521 } 522 523 return data; /* Leave LE untouched */ 524 } 525 526 static inline unsigned long vcpu_data_host_to_guest(struct kvm_vcpu *vcpu, 527 unsigned long data, 528 unsigned int len) 529 { 530 if (kvm_vcpu_is_be(vcpu)) { 531 switch (len) { 532 case 1: 533 return data & 0xff; 534 case 2: 535 return cpu_to_be16(data & 0xffff); 536 case 4: 537 return cpu_to_be32(data & 0xffffffff); 538 default: 539 return cpu_to_be64(data); 540 } 541 } else { 542 switch (len) { 543 case 1: 544 return data & 0xff; 545 case 2: 546 return cpu_to_le16(data & 0xffff); 547 case 4: 548 return cpu_to_le32(data & 0xffffffff); 549 default: 550 return cpu_to_le64(data); 551 } 552 } 553 554 return data; /* Leave LE untouched */ 555 } 556 557 static __always_inline void kvm_incr_pc(struct kvm_vcpu *vcpu) 558 { 559 WARN_ON(vcpu_get_flag(vcpu, PENDING_EXCEPTION)); 560 vcpu_set_flag(vcpu, INCREMENT_PC); 561 } 562 563 #define kvm_pend_exception(v, e) \ 564 do { \ 565 WARN_ON(vcpu_get_flag((v), INCREMENT_PC)); \ 566 vcpu_set_flag((v), PENDING_EXCEPTION); \ 567 vcpu_set_flag((v), e); \ 568 } while (0) 569 570 static __always_inline void kvm_write_cptr_el2(u64 val) 571 { 572 if (has_vhe() || has_hvhe()) 573 write_sysreg(val, cpacr_el1); 574 else 575 write_sysreg(val, cptr_el2); 576 } 577 578 static __always_inline u64 kvm_get_reset_cptr_el2(struct kvm_vcpu *vcpu) 579 { 580 u64 val; 581 582 if (has_vhe()) { 583 val = (CPACR_EL1_FPEN_EL0EN | CPACR_EL1_FPEN_EL1EN | 584 CPACR_EL1_ZEN_EL1EN); 585 if (cpus_have_final_cap(ARM64_SME)) 586 val |= CPACR_EL1_SMEN_EL1EN; 587 } else if (has_hvhe()) { 588 val = (CPACR_EL1_FPEN_EL0EN | CPACR_EL1_FPEN_EL1EN); 589 590 if (!vcpu_has_sve(vcpu) || 591 (vcpu->arch.fp_state != FP_STATE_GUEST_OWNED)) 592 val |= CPACR_EL1_ZEN_EL1EN | CPACR_EL1_ZEN_EL0EN; 593 if (cpus_have_final_cap(ARM64_SME)) 594 val |= CPACR_EL1_SMEN_EL1EN | CPACR_EL1_SMEN_EL0EN; 595 } else { 596 val = CPTR_NVHE_EL2_RES1; 597 598 if (vcpu_has_sve(vcpu) && 599 (vcpu->arch.fp_state == FP_STATE_GUEST_OWNED)) 600 val |= CPTR_EL2_TZ; 601 if (cpus_have_final_cap(ARM64_SME)) 602 val &= ~CPTR_EL2_TSM; 603 } 604 605 return val; 606 } 607 608 static __always_inline void kvm_reset_cptr_el2(struct kvm_vcpu *vcpu) 609 { 610 u64 val = kvm_get_reset_cptr_el2(vcpu); 611 612 kvm_write_cptr_el2(val); 613 } 614 #endif /* __ARM64_KVM_EMULATE_H__ */ 615