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