1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * definition for kernel virtual machines on s390 4 * 5 * Copyright IBM Corp. 2008, 2018 6 * 7 * Author(s): Carsten Otte <cotte@de.ibm.com> 8 */ 9 10 11 #ifndef ASM_KVM_HOST_H 12 #define ASM_KVM_HOST_H 13 14 #include <linux/types.h> 15 #include <linux/hrtimer.h> 16 #include <linux/interrupt.h> 17 #include <linux/kvm_types.h> 18 #include <linux/kvm.h> 19 #include <linux/seqlock.h> 20 #include <linux/module.h> 21 #include <linux/pci.h> 22 #include <linux/mmu_notifier.h> 23 #include <asm/kvm_host_types.h> 24 #include <asm/debug.h> 25 #include <asm/cpu.h> 26 #include <asm/fpu.h> 27 #include <asm/isc.h> 28 #include <asm/guarded_storage.h> 29 30 #define KVM_HAVE_MMU_RWLOCK 31 #define KVM_MAX_VCPUS 255 32 33 #define KVM_INTERNAL_MEM_SLOTS 1 34 35 /* 36 * These seem to be used for allocating ->chip in the routing table, which we 37 * don't use. 1 is as small as we can get to reduce the needed memory. If we 38 * need to look at ->chip later on, we'll need to revisit this. 39 */ 40 #define KVM_NR_IRQCHIPS 1 41 #define KVM_IRQCHIP_NUM_PINS 1 42 #define KVM_HALT_POLL_NS_DEFAULT 50000 43 44 /* s390-specific vcpu->requests bit members */ 45 #define KVM_REQ_ENABLE_IBS KVM_ARCH_REQ(0) 46 #define KVM_REQ_DISABLE_IBS KVM_ARCH_REQ(1) 47 #define KVM_REQ_ICPT_OPEREXC KVM_ARCH_REQ(2) 48 #define KVM_REQ_START_MIGRATION KVM_ARCH_REQ(3) 49 #define KVM_REQ_STOP_MIGRATION KVM_ARCH_REQ(4) 50 #define KVM_REQ_VSIE_RESTART KVM_ARCH_REQ(5) 51 #define KVM_REQ_REFRESH_GUEST_PREFIX \ 52 KVM_ARCH_REQ_FLAGS(6, KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP) 53 54 struct kvm_vcpu_stat { 55 struct kvm_vcpu_stat_generic generic; 56 u64 exit_userspace; 57 u64 exit_null; 58 u64 exit_external_request; 59 u64 exit_io_request; 60 u64 exit_external_interrupt; 61 u64 exit_stop_request; 62 u64 exit_validity; 63 u64 exit_instruction; 64 u64 exit_pei; 65 u64 halt_no_poll_steal; 66 u64 instruction_lctl; 67 u64 instruction_lctlg; 68 u64 instruction_stctl; 69 u64 instruction_stctg; 70 u64 exit_program_interruption; 71 u64 exit_instr_and_program; 72 u64 exit_operation_exception; 73 u64 deliver_ckc; 74 u64 deliver_cputm; 75 u64 deliver_external_call; 76 u64 deliver_emergency_signal; 77 u64 deliver_service_signal; 78 u64 deliver_virtio; 79 u64 deliver_stop_signal; 80 u64 deliver_prefix_signal; 81 u64 deliver_restart_signal; 82 u64 deliver_program; 83 u64 deliver_io; 84 u64 deliver_machine_check; 85 u64 exit_wait_state; 86 u64 inject_ckc; 87 u64 inject_cputm; 88 u64 inject_external_call; 89 u64 inject_emergency_signal; 90 u64 inject_mchk; 91 u64 inject_pfault_init; 92 u64 inject_program; 93 u64 inject_restart; 94 u64 inject_set_prefix; 95 u64 inject_stop_signal; 96 u64 instruction_epsw; 97 u64 instruction_gs; 98 u64 instruction_io_other; 99 u64 instruction_lpsw; 100 u64 instruction_lpswe; 101 u64 instruction_lpswey; 102 u64 instruction_pfmf; 103 u64 instruction_ptff; 104 u64 instruction_sck; 105 u64 instruction_sckpf; 106 u64 instruction_stidp; 107 u64 instruction_spx; 108 u64 instruction_stpx; 109 u64 instruction_stap; 110 u64 instruction_iske; 111 u64 instruction_ri; 112 u64 instruction_rrbe; 113 u64 instruction_sske; 114 u64 instruction_ipte_interlock; 115 u64 instruction_stsi; 116 u64 instruction_stfl; 117 u64 instruction_tb; 118 u64 instruction_tpi; 119 u64 instruction_tprot; 120 u64 instruction_tsch; 121 u64 instruction_sie; 122 u64 instruction_essa; 123 u64 instruction_sthyi; 124 u64 instruction_sigp_sense; 125 u64 instruction_sigp_sense_running; 126 u64 instruction_sigp_external_call; 127 u64 instruction_sigp_emergency; 128 u64 instruction_sigp_cond_emergency; 129 u64 instruction_sigp_start; 130 u64 instruction_sigp_stop; 131 u64 instruction_sigp_stop_store_status; 132 u64 instruction_sigp_store_status; 133 u64 instruction_sigp_store_adtl_status; 134 u64 instruction_sigp_arch; 135 u64 instruction_sigp_prefix; 136 u64 instruction_sigp_restart; 137 u64 instruction_sigp_init_cpu_reset; 138 u64 instruction_sigp_cpu_reset; 139 u64 instruction_sigp_unknown; 140 u64 instruction_diagnose_10; 141 u64 instruction_diagnose_44; 142 u64 instruction_diagnose_9c; 143 u64 diag_9c_ignored; 144 u64 diag_9c_forward; 145 u64 instruction_diagnose_258; 146 u64 instruction_diagnose_308; 147 u64 instruction_diagnose_500; 148 u64 instruction_diagnose_other; 149 u64 pfault_sync; 150 u64 signal_exits; 151 }; 152 153 #define PGM_OPERATION 0x01 154 #define PGM_PRIVILEGED_OP 0x02 155 #define PGM_EXECUTE 0x03 156 #define PGM_PROTECTION 0x04 157 #define PGM_ADDRESSING 0x05 158 #define PGM_SPECIFICATION 0x06 159 #define PGM_DATA 0x07 160 #define PGM_FIXED_POINT_OVERFLOW 0x08 161 #define PGM_FIXED_POINT_DIVIDE 0x09 162 #define PGM_DECIMAL_OVERFLOW 0x0a 163 #define PGM_DECIMAL_DIVIDE 0x0b 164 #define PGM_HFP_EXPONENT_OVERFLOW 0x0c 165 #define PGM_HFP_EXPONENT_UNDERFLOW 0x0d 166 #define PGM_HFP_SIGNIFICANCE 0x0e 167 #define PGM_HFP_DIVIDE 0x0f 168 #define PGM_SEGMENT_TRANSLATION 0x10 169 #define PGM_PAGE_TRANSLATION 0x11 170 #define PGM_TRANSLATION_SPEC 0x12 171 #define PGM_SPECIAL_OPERATION 0x13 172 #define PGM_OPERAND 0x15 173 #define PGM_TRACE_TABEL 0x16 174 #define PGM_VECTOR_PROCESSING 0x1b 175 #define PGM_SPACE_SWITCH 0x1c 176 #define PGM_HFP_SQUARE_ROOT 0x1d 177 #define PGM_PC_TRANSLATION_SPEC 0x1f 178 #define PGM_AFX_TRANSLATION 0x20 179 #define PGM_ASX_TRANSLATION 0x21 180 #define PGM_LX_TRANSLATION 0x22 181 #define PGM_EX_TRANSLATION 0x23 182 #define PGM_PRIMARY_AUTHORITY 0x24 183 #define PGM_SECONDARY_AUTHORITY 0x25 184 #define PGM_LFX_TRANSLATION 0x26 185 #define PGM_LSX_TRANSLATION 0x27 186 #define PGM_ALET_SPECIFICATION 0x28 187 #define PGM_ALEN_TRANSLATION 0x29 188 #define PGM_ALE_SEQUENCE 0x2a 189 #define PGM_ASTE_VALIDITY 0x2b 190 #define PGM_ASTE_SEQUENCE 0x2c 191 #define PGM_EXTENDED_AUTHORITY 0x2d 192 #define PGM_LSTE_SEQUENCE 0x2e 193 #define PGM_ASTE_INSTANCE 0x2f 194 #define PGM_STACK_FULL 0x30 195 #define PGM_STACK_EMPTY 0x31 196 #define PGM_STACK_SPECIFICATION 0x32 197 #define PGM_STACK_TYPE 0x33 198 #define PGM_STACK_OPERATION 0x34 199 #define PGM_ASCE_TYPE 0x38 200 #define PGM_REGION_FIRST_TRANS 0x39 201 #define PGM_REGION_SECOND_TRANS 0x3a 202 #define PGM_REGION_THIRD_TRANS 0x3b 203 #define PGM_SECURE_STORAGE_ACCESS 0x3d 204 #define PGM_NON_SECURE_STORAGE_ACCESS 0x3e 205 #define PGM_SECURE_STORAGE_VIOLATION 0x3f 206 #define PGM_MONITOR 0x40 207 #define PGM_PER 0x80 208 #define PGM_CRYPTO_OPERATION 0x119 209 210 /* irq types in ascend order of priorities */ 211 enum irq_types { 212 IRQ_PEND_SET_PREFIX = 0, 213 IRQ_PEND_RESTART, 214 IRQ_PEND_SIGP_STOP, 215 IRQ_PEND_IO_ISC_7, 216 IRQ_PEND_IO_ISC_6, 217 IRQ_PEND_IO_ISC_5, 218 IRQ_PEND_IO_ISC_4, 219 IRQ_PEND_IO_ISC_3, 220 IRQ_PEND_IO_ISC_2, 221 IRQ_PEND_IO_ISC_1, 222 IRQ_PEND_IO_ISC_0, 223 IRQ_PEND_VIRTIO, 224 IRQ_PEND_PFAULT_DONE, 225 IRQ_PEND_PFAULT_INIT, 226 IRQ_PEND_EXT_HOST, 227 IRQ_PEND_EXT_SERVICE, 228 IRQ_PEND_EXT_SERVICE_EV, 229 IRQ_PEND_EXT_TIMING, 230 IRQ_PEND_EXT_CPU_TIMER, 231 IRQ_PEND_EXT_CLOCK_COMP, 232 IRQ_PEND_EXT_EXTERNAL, 233 IRQ_PEND_EXT_EMERGENCY, 234 IRQ_PEND_EXT_MALFUNC, 235 IRQ_PEND_EXT_IRQ_KEY, 236 IRQ_PEND_MCHK_REP, 237 IRQ_PEND_PROG, 238 IRQ_PEND_SVC, 239 IRQ_PEND_MCHK_EX, 240 IRQ_PEND_COUNT 241 }; 242 243 /* We have 2M for virtio device descriptor pages. Smallest amount of 244 * memory per page is 24 bytes (1 queue), so (2048*1024) / 24 = 87381 245 */ 246 #define KVM_S390_MAX_VIRTIO_IRQS 87381 247 248 /* 249 * Repressible (non-floating) machine check interrupts 250 * subclass bits in MCIC 251 */ 252 #define MCHK_EXTD_BIT 58 253 #define MCHK_DEGR_BIT 56 254 #define MCHK_WARN_BIT 55 255 #define MCHK_REP_MASK ((1UL << MCHK_DEGR_BIT) | \ 256 (1UL << MCHK_EXTD_BIT) | \ 257 (1UL << MCHK_WARN_BIT)) 258 259 /* Exigent machine check interrupts subclass bits in MCIC */ 260 #define MCHK_SD_BIT 63 261 #define MCHK_PD_BIT 62 262 #define MCHK_EX_MASK ((1UL << MCHK_SD_BIT) | (1UL << MCHK_PD_BIT)) 263 264 #define IRQ_PEND_EXT_MASK ((1UL << IRQ_PEND_EXT_IRQ_KEY) | \ 265 (1UL << IRQ_PEND_EXT_CLOCK_COMP) | \ 266 (1UL << IRQ_PEND_EXT_CPU_TIMER) | \ 267 (1UL << IRQ_PEND_EXT_MALFUNC) | \ 268 (1UL << IRQ_PEND_EXT_EMERGENCY) | \ 269 (1UL << IRQ_PEND_EXT_EXTERNAL) | \ 270 (1UL << IRQ_PEND_EXT_TIMING) | \ 271 (1UL << IRQ_PEND_EXT_HOST) | \ 272 (1UL << IRQ_PEND_EXT_SERVICE) | \ 273 (1UL << IRQ_PEND_EXT_SERVICE_EV) | \ 274 (1UL << IRQ_PEND_VIRTIO) | \ 275 (1UL << IRQ_PEND_PFAULT_INIT) | \ 276 (1UL << IRQ_PEND_PFAULT_DONE)) 277 278 #define IRQ_PEND_IO_MASK ((1UL << IRQ_PEND_IO_ISC_0) | \ 279 (1UL << IRQ_PEND_IO_ISC_1) | \ 280 (1UL << IRQ_PEND_IO_ISC_2) | \ 281 (1UL << IRQ_PEND_IO_ISC_3) | \ 282 (1UL << IRQ_PEND_IO_ISC_4) | \ 283 (1UL << IRQ_PEND_IO_ISC_5) | \ 284 (1UL << IRQ_PEND_IO_ISC_6) | \ 285 (1UL << IRQ_PEND_IO_ISC_7)) 286 287 #define IRQ_PEND_MCHK_MASK ((1UL << IRQ_PEND_MCHK_REP) | \ 288 (1UL << IRQ_PEND_MCHK_EX)) 289 290 #define IRQ_PEND_EXT_II_MASK ((1UL << IRQ_PEND_EXT_CPU_TIMER) | \ 291 (1UL << IRQ_PEND_EXT_CLOCK_COMP) | \ 292 (1UL << IRQ_PEND_EXT_EMERGENCY) | \ 293 (1UL << IRQ_PEND_EXT_EXTERNAL) | \ 294 (1UL << IRQ_PEND_EXT_SERVICE) | \ 295 (1UL << IRQ_PEND_EXT_SERVICE_EV)) 296 297 struct kvm_s390_interrupt_info { 298 struct list_head list; 299 u64 type; 300 union { 301 struct kvm_s390_io_info io; 302 struct kvm_s390_ext_info ext; 303 struct kvm_s390_pgm_info pgm; 304 struct kvm_s390_emerg_info emerg; 305 struct kvm_s390_extcall_info extcall; 306 struct kvm_s390_prefix_info prefix; 307 struct kvm_s390_stop_info stop; 308 struct kvm_s390_mchk_info mchk; 309 }; 310 }; 311 312 struct kvm_s390_irq_payload { 313 struct kvm_s390_io_info io; 314 struct kvm_s390_ext_info ext; 315 struct kvm_s390_pgm_info pgm; 316 struct kvm_s390_emerg_info emerg; 317 struct kvm_s390_extcall_info extcall; 318 struct kvm_s390_prefix_info prefix; 319 struct kvm_s390_stop_info stop; 320 struct kvm_s390_mchk_info mchk; 321 }; 322 323 struct kvm_s390_local_interrupt { 324 spinlock_t lock; 325 DECLARE_BITMAP(sigp_emerg_pending, KVM_MAX_VCPUS); 326 struct kvm_s390_irq_payload irq; 327 unsigned long pending_irqs; 328 }; 329 330 #define FIRQ_LIST_IO_ISC_0 0 331 #define FIRQ_LIST_IO_ISC_1 1 332 #define FIRQ_LIST_IO_ISC_2 2 333 #define FIRQ_LIST_IO_ISC_3 3 334 #define FIRQ_LIST_IO_ISC_4 4 335 #define FIRQ_LIST_IO_ISC_5 5 336 #define FIRQ_LIST_IO_ISC_6 6 337 #define FIRQ_LIST_IO_ISC_7 7 338 #define FIRQ_LIST_PFAULT 8 339 #define FIRQ_LIST_VIRTIO 9 340 #define FIRQ_LIST_COUNT 10 341 #define FIRQ_CNTR_IO 0 342 #define FIRQ_CNTR_SERVICE 1 343 #define FIRQ_CNTR_VIRTIO 2 344 #define FIRQ_CNTR_PFAULT 3 345 #define FIRQ_MAX_COUNT 4 346 347 /* mask the AIS mode for a given ISC */ 348 #define AIS_MODE_MASK(isc) (0x80 >> isc) 349 350 #define KVM_S390_AIS_MODE_ALL 0 351 #define KVM_S390_AIS_MODE_SINGLE 1 352 353 struct kvm_s390_float_interrupt { 354 unsigned long pending_irqs; 355 unsigned long masked_irqs; 356 spinlock_t lock; 357 struct list_head lists[FIRQ_LIST_COUNT]; 358 int counters[FIRQ_MAX_COUNT]; 359 struct kvm_s390_mchk_info mchk; 360 struct kvm_s390_ext_info srv_signal; 361 int last_sleep_cpu; 362 spinlock_t ais_lock; 363 u8 simm; 364 u8 nimm; 365 }; 366 367 struct kvm_hw_wp_info_arch { 368 unsigned long addr; 369 unsigned long phys_addr; 370 int len; 371 char *old_data; 372 }; 373 374 struct kvm_hw_bp_info_arch { 375 unsigned long addr; 376 int len; 377 }; 378 379 /* 380 * Only the upper 16 bits of kvm_guest_debug->control are arch specific. 381 * Further KVM_GUESTDBG flags which an be used from userspace can be found in 382 * arch/s390/include/uapi/asm/kvm.h 383 */ 384 #define KVM_GUESTDBG_EXIT_PENDING 0x10000000 385 386 #define guestdbg_enabled(vcpu) \ 387 (vcpu->guest_debug & KVM_GUESTDBG_ENABLE) 388 #define guestdbg_sstep_enabled(vcpu) \ 389 (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP) 390 #define guestdbg_hw_bp_enabled(vcpu) \ 391 (vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP) 392 #define guestdbg_exit_pending(vcpu) (guestdbg_enabled(vcpu) && \ 393 (vcpu->guest_debug & KVM_GUESTDBG_EXIT_PENDING)) 394 395 #define KVM_GUESTDBG_VALID_MASK \ 396 (KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_SINGLESTEP |\ 397 KVM_GUESTDBG_USE_HW_BP | KVM_GUESTDBG_EXIT_PENDING) 398 399 struct kvm_guestdbg_info_arch { 400 unsigned long cr0; 401 unsigned long cr9; 402 unsigned long cr10; 403 unsigned long cr11; 404 struct kvm_hw_bp_info_arch *hw_bp_info; 405 struct kvm_hw_wp_info_arch *hw_wp_info; 406 int nr_hw_bp; 407 int nr_hw_wp; 408 unsigned long last_bp; 409 }; 410 411 struct kvm_s390_pv_vcpu { 412 u64 handle; 413 unsigned long stor_base; 414 }; 415 416 struct kvm_vcpu_arch { 417 struct kvm_s390_sie_block *sie_block; 418 /* if vsie is active, currently executed shadow sie control block */ 419 struct kvm_s390_sie_block *vsie_block; 420 unsigned int host_acrs[NUM_ACRS]; 421 struct gs_cb *host_gscb; 422 struct kvm_s390_local_interrupt local_int; 423 struct hrtimer ckc_timer; 424 struct kvm_s390_pgm_info pgm; 425 struct gmap *gmap; 426 struct kvm_guestdbg_info_arch guestdbg; 427 unsigned long pfault_token; 428 unsigned long pfault_select; 429 unsigned long pfault_compare; 430 bool cputm_enabled; 431 /* 432 * The seqcount protects updates to cputm_start and sie_block.cputm, 433 * this way we can have non-blocking reads with consistent values. 434 * Only the owning VCPU thread (vcpu->cpu) is allowed to change these 435 * values and to start/stop/enable/disable cpu timer accounting. 436 */ 437 seqcount_t cputm_seqcount; 438 __u64 cputm_start; 439 bool gs_enabled; 440 bool skey_enabled; 441 /* Indicator if the access registers have been loaded from guest */ 442 bool acrs_loaded; 443 struct kvm_s390_pv_vcpu pv; 444 union diag318_info diag318_info; 445 struct kvm_s390_mmu_cache *mc; 446 }; 447 448 struct kvm_vm_stat { 449 struct kvm_vm_stat_generic generic; 450 u64 inject_io; 451 u64 io_390_adapter_map; 452 u64 io_390_adapter_unmap; 453 u64 io_390_inatomic; 454 u64 io_flic_inject_airq; 455 u64 io_set_adapter_int; 456 u64 io_390_inatomic_no_inject; 457 u64 inject_float_mchk; 458 u64 inject_pfault_done; 459 u64 inject_service_signal; 460 u64 inject_virtio; 461 u64 aen_forward; 462 u64 gmap_shadow_create; 463 u64 gmap_shadow_reuse; 464 u64 gmap_shadow_r1_entry; 465 u64 gmap_shadow_r2_entry; 466 u64 gmap_shadow_r3_entry; 467 u64 gmap_shadow_sg_entry; 468 u64 gmap_shadow_pg_entry; 469 }; 470 471 struct kvm_arch_memory_slot { 472 }; 473 474 struct s390_map_info { 475 struct list_head list; 476 __u64 guest_addr; 477 __u64 addr; 478 struct page *page; 479 /* 480 * True if the page is long-term pinned. False if long-term pinning 481 * failed and this entry exists only to preserve MAP/UNMAP symmetry. 482 */ 483 bool pinned; 484 }; 485 486 struct s390_io_adapter { 487 unsigned int id; 488 int isc; 489 bool maskable; 490 bool masked; 491 bool swap; 492 bool suppressible; 493 spinlock_t maps_lock; 494 struct list_head maps; 495 unsigned int nr_maps; 496 }; 497 498 #define MAX_S390_IO_ADAPTERS ((MAX_ISC + 1) * 8) 499 #define MAX_S390_ADAPTER_MAPS 256 500 501 /* maximum size of facilities and facility mask is 2k bytes */ 502 #define S390_ARCH_FAC_LIST_SIZE_BYTE (1<<11) 503 #define S390_ARCH_FAC_LIST_SIZE_U64 \ 504 (S390_ARCH_FAC_LIST_SIZE_BYTE / sizeof(u64)) 505 #define S390_ARCH_FAC_MASK_SIZE_BYTE S390_ARCH_FAC_LIST_SIZE_BYTE 506 #define S390_ARCH_FAC_MASK_SIZE_U64 \ 507 (S390_ARCH_FAC_MASK_SIZE_BYTE / sizeof(u64)) 508 509 struct kvm_s390_cpu_model { 510 /* facility mask supported by kvm & hosting machine */ 511 __u64 fac_mask[S390_ARCH_FAC_MASK_SIZE_U64]; 512 struct kvm_s390_vm_cpu_subfunc subfuncs; 513 /* facility list requested by guest (in dma page) */ 514 __u64 *fac_list; 515 u64 cpuid; 516 unsigned short ibc; 517 /* subset of available UV-features for pv-guests enabled by user space */ 518 struct kvm_s390_vm_cpu_uv_feat uv_feat_guest; 519 }; 520 521 #define S390_ARCH_FAC_FORMAT_2 2 522 struct kvm_s390_flcb2 { 523 union { 524 struct { 525 u8 reserved0[7]; 526 u8 length; 527 }; 528 u64 header_val; 529 }; 530 u64 facilities[S390_ARCH_FAC_LIST_SIZE_U64]; 531 }; 532 533 typedef int (*crypto_hook)(struct kvm_vcpu *vcpu); 534 535 struct kvm_s390_crypto { 536 struct kvm_s390_crypto_cb *crycb; 537 struct rw_semaphore pqap_hook_rwsem; 538 crypto_hook *pqap_hook; 539 __u32 crycbd; 540 __u8 aes_kw; 541 __u8 dea_kw; 542 __u8 apie; 543 }; 544 545 #define APCB0_MASK_SIZE 1 546 struct kvm_s390_apcb0 { 547 __u64 apm[APCB0_MASK_SIZE]; /* 0x0000 */ 548 __u64 aqm[APCB0_MASK_SIZE]; /* 0x0008 */ 549 __u64 adm[APCB0_MASK_SIZE]; /* 0x0010 */ 550 __u64 reserved18; /* 0x0018 */ 551 }; 552 553 #define APCB1_MASK_SIZE 4 554 struct kvm_s390_apcb1 { 555 __u64 apm[APCB1_MASK_SIZE]; /* 0x0000 */ 556 __u64 aqm[APCB1_MASK_SIZE]; /* 0x0020 */ 557 __u64 adm[APCB1_MASK_SIZE]; /* 0x0040 */ 558 __u64 reserved60[4]; /* 0x0060 */ 559 }; 560 561 struct kvm_s390_crypto_cb { 562 struct kvm_s390_apcb0 apcb0; /* 0x0000 */ 563 __u8 reserved20[0x0048 - 0x0020]; /* 0x0020 */ 564 __u8 dea_wrapping_key_mask[24]; /* 0x0048 */ 565 __u8 aes_wrapping_key_mask[32]; /* 0x0060 */ 566 struct kvm_s390_apcb1 apcb1; /* 0x0080 */ 567 }; 568 569 struct kvm_s390_gisa { 570 union { 571 struct { /* common to all formats */ 572 u32 next_alert; 573 u8 ipm; 574 u8 reserved01[2]; 575 u8 iam; 576 }; 577 struct { /* format 0 */ 578 u32 next_alert; 579 u8 ipm; 580 u8 reserved01; 581 u8 : 6; 582 u8 g : 1; 583 u8 c : 1; 584 u8 iam; 585 u8 reserved02[4]; 586 u32 airq_count; 587 } g0; 588 struct { /* format 1 */ 589 u32 next_alert; 590 u8 ipm; 591 u8 simm; 592 u8 nimm; 593 u8 iam; 594 u8 aism[8]; 595 u8 : 6; 596 u8 g : 1; 597 u8 c : 1; 598 u8 reserved03[11]; 599 u32 airq_count; 600 } g1; 601 struct { 602 u64 word[4]; 603 } u64; 604 }; 605 }; 606 607 struct kvm_s390_gib { 608 u32 alert_list_origin; 609 u32 reserved01; 610 u8:5; 611 u8 nisc:3; 612 u8 reserved03[3]; 613 u32 reserved04[5]; 614 }; 615 616 /* 617 * sie_page2 has to be allocated as DMA because fac_list, crycb and 618 * gisa need 31bit addresses in the sie control block. 619 */ 620 struct sie_page2 { 621 __u64 fac_list[S390_ARCH_FAC_LIST_SIZE_U64]; /* 0x0000 */ 622 struct kvm_s390_crypto_cb crycb; /* 0x0800 */ 623 struct kvm_s390_gisa gisa; /* 0x0900 */ 624 struct kvm *kvm; /* 0x0920 */ 625 u8 reserved928[0x1000 - 0x928]; /* 0x0928 */ 626 }; 627 628 struct vsie_page; 629 630 struct kvm_s390_vsie { 631 struct mutex mutex; 632 struct radix_tree_root addr_to_page; 633 int page_count; 634 int next; 635 struct vsie_page *pages[KVM_MAX_VCPUS]; 636 }; 637 638 struct kvm_s390_gisa_iam { 639 u8 mask; 640 spinlock_t ref_lock; 641 u32 ref_count[MAX_ISC + 1]; 642 }; 643 644 struct kvm_s390_gisa_interrupt { 645 struct kvm_s390_gisa *origin; 646 struct kvm_s390_gisa_iam alert; 647 struct hrtimer timer; 648 u64 expires; 649 DECLARE_BITMAP(kicked_mask, KVM_MAX_VCPUS); 650 }; 651 652 struct kvm_s390_pv { 653 u64 handle; 654 u64 guest_len; 655 unsigned long stor_base; 656 void *stor_var; 657 bool dumping; 658 void *set_aside; 659 struct list_head need_cleanup; 660 struct mmu_notifier mmu_notifier; 661 /* Protects against concurrent import-like operations */ 662 struct mutex import_lock; 663 }; 664 665 struct kvm_s390_mmu_cache; 666 667 struct kvm_arch { 668 struct esca_block *sca; 669 debug_info_t *dbf; 670 struct kvm_s390_float_interrupt float_int; 671 struct kvm_device *flic; 672 struct gmap *gmap; 673 unsigned long mem_limit; 674 int css_support; 675 int use_irqchip; 676 int use_cmma; 677 int use_pfmfi; 678 int use_skf; 679 int use_zpci_interp; 680 int user_cpu_state_ctrl; 681 int user_sigp; 682 int user_stsi; 683 int user_instr0; 684 int user_operexec; 685 int allow_vsie_esamode; 686 struct s390_io_adapter *adapters[MAX_S390_IO_ADAPTERS]; 687 wait_queue_head_t ipte_wq; 688 int ipte_lock_count; 689 struct mutex ipte_mutex; 690 spinlock_t start_stop_lock; 691 struct sie_page2 *sie_page2; 692 struct kvm_s390_cpu_model model; 693 struct kvm_s390_crypto crypto; 694 struct kvm_s390_vsie vsie; 695 u8 epdx; 696 u64 epoch; 697 int migration_mode; 698 atomic64_t cmma_dirty_pages; 699 /* subset of available cpu features enabled by user space */ 700 DECLARE_BITMAP(cpu_feat, KVM_S390_VM_CPU_FEAT_NR_BITS); 701 /* indexed by vcpu_idx */ 702 DECLARE_BITMAP(idle_mask, KVM_MAX_VCPUS); 703 struct kvm_s390_gisa_interrupt gisa_int; 704 struct kvm_s390_pv pv; 705 struct list_head kzdev_list; 706 spinlock_t kzdev_list_lock; 707 struct kvm_s390_mmu_cache *mc; 708 }; 709 710 #define KVM_HVA_ERR_BAD (-1UL) 711 #define KVM_HVA_ERR_RO_BAD (-2UL) 712 713 static inline bool kvm_is_error_hva(unsigned long addr) 714 { 715 return IS_ERR_VALUE(addr); 716 } 717 718 #define ASYNC_PF_PER_VCPU 64 719 struct kvm_arch_async_pf { 720 unsigned long pfault_token; 721 }; 722 723 bool kvm_arch_can_dequeue_async_page_present(struct kvm_vcpu *vcpu); 724 725 void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu, 726 struct kvm_async_pf *work); 727 728 bool kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu, 729 struct kvm_async_pf *work); 730 731 void kvm_arch_async_page_present(struct kvm_vcpu *vcpu, 732 struct kvm_async_pf *work); 733 734 static inline void kvm_arch_async_page_present_queued(struct kvm_vcpu *vcpu) {} 735 736 void kvm_arch_crypto_clear_masks(struct kvm *kvm); 737 void kvm_arch_crypto_set_masks(struct kvm *kvm, unsigned long *apm, 738 unsigned long *aqm, unsigned long *adm); 739 740 #define SIE64_RETURN_NORMAL 0 741 #define SIE64_RETURN_MCCK 1 742 743 int __sie64a(phys_addr_t sie_block_phys, struct kvm_s390_sie_block *sie_block, u64 *rsa, 744 unsigned long gasce); 745 746 static inline int sie64a(struct kvm_s390_sie_block *sie_block, u64 *rsa, unsigned long gasce) 747 { 748 return __sie64a(virt_to_phys(sie_block), sie_block, rsa, gasce); 749 } 750 751 extern char sie_exit; 752 753 bool kvm_s390_pv_is_protected(struct kvm *kvm); 754 bool kvm_s390_pv_cpu_is_protected(struct kvm_vcpu *vcpu); 755 756 extern int kvm_s390_enter_exit_sie(struct kvm_s390_sie_block *scb, 757 u64 *gprs, unsigned long gasce); 758 759 extern int kvm_s390_gisc_register(struct kvm *kvm, u32 gisc); 760 extern int kvm_s390_gisc_unregister(struct kvm *kvm, u32 gisc); 761 762 bool kvm_s390_is_gpa_in_memslot(struct kvm *kvm, gpa_t gpa); 763 764 static inline void kvm_arch_free_memslot(struct kvm *kvm, 765 struct kvm_memory_slot *slot) {} 766 static inline void kvm_arch_memslots_updated(struct kvm *kvm, u64 gen) {} 767 static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {} 768 static inline void kvm_arch_flush_shadow_memslot(struct kvm *kvm, 769 struct kvm_memory_slot *slot) {} 770 static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {} 771 static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {} 772 773 #define __KVM_HAVE_ARCH_VM_FREE 774 void kvm_arch_free_vm(struct kvm *kvm); 775 776 struct zpci_kvm_hook { 777 int (*kvm_register)(void *opaque, struct kvm *kvm); 778 void (*kvm_unregister)(void *opaque); 779 }; 780 781 extern struct zpci_kvm_hook zpci_kvm_hook; 782 783 #endif 784