1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * definition for kvm on s390 4 * 5 * Copyright IBM Corp. 2008, 2020 6 * 7 * Author(s): Carsten Otte <cotte@de.ibm.com> 8 * Christian Borntraeger <borntraeger@de.ibm.com> 9 * Christian Ehrhardt <ehrhardt@de.ibm.com> 10 */ 11 12 #ifndef ARCH_S390_KVM_S390_H 13 #define ARCH_S390_KVM_S390_H 14 15 #include <linux/hrtimer.h> 16 #include <linux/kvm.h> 17 #include <linux/kvm_host.h> 18 #include <linux/lockdep.h> 19 #include <asm/facility.h> 20 #include <asm/processor.h> 21 #include <asm/sclp.h> 22 #include "dat.h" 23 #include "gmap.h" 24 25 #define KVM_S390_UCONTROL_MEMSLOT (KVM_USER_MEM_SLOTS + 0) 26 27 union kvm_s390_quad { 28 __uint128_t sixteen; 29 unsigned long eight; 30 unsigned int four; 31 unsigned short two; 32 unsigned char one; 33 }; 34 35 static inline void kvm_s390_fpu_store(struct kvm_run *run) 36 { 37 fpu_stfpc(&run->s.regs.fpc); 38 if (cpu_has_vx()) 39 save_vx_regs((__vector128 *)&run->s.regs.vrs); 40 else 41 save_fp_regs((freg_t *)&run->s.regs.fprs); 42 } 43 44 static inline void kvm_s390_fpu_load(struct kvm_run *run) 45 { 46 fpu_lfpc_safe(&run->s.regs.fpc); 47 if (cpu_has_vx()) 48 load_vx_regs((__vector128 *)&run->s.regs.vrs); 49 else 50 load_fp_regs((freg_t *)&run->s.regs.fprs); 51 } 52 53 /* Transactional Memory Execution related macros */ 54 #define IS_TE_ENABLED(vcpu) ((vcpu->arch.sie_block->ecb & ECB_TE)) 55 #define TDB_FORMAT1 1 56 #define IS_ITDB_VALID(vcpu) \ 57 ((*(char *)phys_to_virt((vcpu)->arch.sie_block->itdba) == TDB_FORMAT1)) 58 59 extern debug_info_t *kvm_s390_dbf; 60 extern debug_info_t *kvm_s390_dbf_uv; 61 62 #define KVM_UV_EVENT(d_kvm, d_loglevel, d_string, d_args...)\ 63 do { \ 64 debug_sprintf_event((d_kvm)->arch.dbf, d_loglevel, d_string "\n", \ 65 d_args); \ 66 debug_sprintf_event(kvm_s390_dbf_uv, d_loglevel, \ 67 "%d: " d_string "\n", (d_kvm)->userspace_pid, \ 68 d_args); \ 69 } while (0) 70 71 #define KVM_EVENT(d_loglevel, d_string, d_args...)\ 72 do { \ 73 debug_sprintf_event(kvm_s390_dbf, d_loglevel, d_string "\n", \ 74 d_args); \ 75 } while (0) 76 77 #define VM_EVENT(d_kvm, d_loglevel, d_string, d_args...)\ 78 do { \ 79 debug_sprintf_event(d_kvm->arch.dbf, d_loglevel, d_string "\n", \ 80 d_args); \ 81 } while (0) 82 83 #define VCPU_EVENT(d_vcpu, d_loglevel, d_string, d_args...)\ 84 do { \ 85 debug_sprintf_event(d_vcpu->kvm->arch.dbf, d_loglevel, \ 86 "%02d[%016lx-%016lx]: " d_string "\n", d_vcpu->vcpu_id, \ 87 d_vcpu->arch.sie_block->gpsw.mask, d_vcpu->arch.sie_block->gpsw.addr,\ 88 d_args); \ 89 } while (0) 90 91 static inline void kvm_s390_set_cpuflags(struct kvm_vcpu *vcpu, u32 flags) 92 { 93 atomic_or(flags, &vcpu->arch.sie_block->cpuflags); 94 } 95 96 static inline void kvm_s390_clear_cpuflags(struct kvm_vcpu *vcpu, u32 flags) 97 { 98 atomic_andnot(flags, &vcpu->arch.sie_block->cpuflags); 99 } 100 101 static inline bool kvm_s390_test_cpuflags(struct kvm_vcpu *vcpu, u32 flags) 102 { 103 return (atomic_read(&vcpu->arch.sie_block->cpuflags) & flags) == flags; 104 } 105 106 static inline int is_vcpu_stopped(struct kvm_vcpu *vcpu) 107 { 108 return kvm_s390_test_cpuflags(vcpu, CPUSTAT_STOPPED); 109 } 110 111 static inline int is_vcpu_idle(struct kvm_vcpu *vcpu) 112 { 113 return test_bit(vcpu->vcpu_idx, vcpu->kvm->arch.idle_mask); 114 } 115 116 static inline int kvm_is_ucontrol(struct kvm *kvm) 117 { 118 #ifdef CONFIG_KVM_S390_UCONTROL 119 return test_bit(GMAP_FLAG_IS_UCONTROL, &kvm->arch.gmap->flags); 120 #else 121 return 0; 122 #endif 123 } 124 125 #define GUEST_PREFIX_SHIFT 13 126 static inline u32 kvm_s390_get_prefix(struct kvm_vcpu *vcpu) 127 { 128 return vcpu->arch.sie_block->prefix << GUEST_PREFIX_SHIFT; 129 } 130 131 static inline void kvm_s390_set_prefix(struct kvm_vcpu *vcpu, u32 prefix) 132 { 133 VCPU_EVENT(vcpu, 3, "set prefix of cpu %03u to 0x%x", vcpu->vcpu_id, 134 prefix); 135 vcpu->arch.sie_block->prefix = prefix >> GUEST_PREFIX_SHIFT; 136 kvm_make_request(KVM_REQ_TLB_FLUSH, vcpu); 137 kvm_make_request(KVM_REQ_REFRESH_GUEST_PREFIX, vcpu); 138 } 139 140 static inline u64 kvm_s390_get_base_disp_s(struct kvm_vcpu *vcpu, u8 *ar) 141 { 142 u32 base2 = vcpu->arch.sie_block->ipb >> 28; 143 u32 disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16); 144 145 if (ar) 146 *ar = base2; 147 148 return (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2; 149 } 150 151 static inline u64 kvm_s390_get_base_disp_siy(struct kvm_vcpu *vcpu, u8 *ar) 152 { 153 u32 base1 = vcpu->arch.sie_block->ipb >> 28; 154 s64 disp1; 155 156 /* The displacement is a 20bit _SIGNED_ value */ 157 disp1 = sign_extend64(((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16) + 158 ((vcpu->arch.sie_block->ipb & 0xff00) << 4), 19); 159 160 if (ar) 161 *ar = base1; 162 163 return (base1 ? vcpu->run->s.regs.gprs[base1] : 0) + disp1; 164 } 165 166 static inline void kvm_s390_get_base_disp_sse(struct kvm_vcpu *vcpu, 167 u64 *address1, u64 *address2, 168 u8 *ar_b1, u8 *ar_b2) 169 { 170 u32 base1 = (vcpu->arch.sie_block->ipb & 0xf0000000) >> 28; 171 u32 disp1 = (vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16; 172 u32 base2 = (vcpu->arch.sie_block->ipb & 0xf000) >> 12; 173 u32 disp2 = vcpu->arch.sie_block->ipb & 0x0fff; 174 175 *address1 = (base1 ? vcpu->run->s.regs.gprs[base1] : 0) + disp1; 176 *address2 = (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2; 177 178 if (ar_b1) 179 *ar_b1 = base1; 180 if (ar_b2) 181 *ar_b2 = base2; 182 } 183 184 static inline void kvm_s390_get_regs_rre(struct kvm_vcpu *vcpu, int *r1, int *r2) 185 { 186 if (r1) 187 *r1 = (vcpu->arch.sie_block->ipb & 0x00f00000) >> 20; 188 if (r2) 189 *r2 = (vcpu->arch.sie_block->ipb & 0x000f0000) >> 16; 190 } 191 192 static inline u64 kvm_s390_get_base_disp_rsy(struct kvm_vcpu *vcpu, u8 *ar) 193 { 194 u32 base2 = vcpu->arch.sie_block->ipb >> 28; 195 u32 disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16) + 196 ((vcpu->arch.sie_block->ipb & 0xff00) << 4); 197 /* The displacement is a 20bit _SIGNED_ value */ 198 if (disp2 & 0x80000) 199 disp2+=0xfff00000; 200 201 if (ar) 202 *ar = base2; 203 204 return (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + (long)(int)disp2; 205 } 206 207 static inline u64 kvm_s390_get_base_disp_rs(struct kvm_vcpu *vcpu, u8 *ar) 208 { 209 u32 base2 = vcpu->arch.sie_block->ipb >> 28; 210 u32 disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16); 211 212 if (ar) 213 *ar = base2; 214 215 return (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2; 216 } 217 218 /* Set the condition code in the guest program status word */ 219 static inline void kvm_s390_set_psw_cc(struct kvm_vcpu *vcpu, unsigned long cc) 220 { 221 vcpu->arch.sie_block->gpsw.mask &= ~(3UL << 44); 222 vcpu->arch.sie_block->gpsw.mask |= cc << 44; 223 } 224 225 /* test availability of facility in a kvm instance */ 226 static inline int test_kvm_facility(struct kvm *kvm, unsigned long nr) 227 { 228 return __test_facility(nr, kvm->arch.model.fac_mask) && 229 __test_facility(nr, kvm->arch.model.fac_list); 230 } 231 232 static inline int set_kvm_facility(u64 *fac_list, unsigned long nr) 233 { 234 unsigned char *ptr; 235 236 if (nr >= MAX_FACILITY_BIT) 237 return -EINVAL; 238 ptr = (unsigned char *) fac_list + (nr >> 3); 239 *ptr |= (0x80UL >> (nr & 7)); 240 return 0; 241 } 242 243 static inline int test_kvm_cpu_feat(struct kvm *kvm, unsigned long nr) 244 { 245 WARN_ON_ONCE(nr >= KVM_S390_VM_CPU_FEAT_NR_BITS); 246 return test_bit_inv(nr, kvm->arch.cpu_feat); 247 } 248 249 /* are cpu states controlled by user space */ 250 static inline int kvm_s390_user_cpu_state_ctrl(struct kvm *kvm) 251 { 252 return kvm->arch.user_cpu_state_ctrl != 0; 253 } 254 255 static inline void kvm_s390_set_user_cpu_state_ctrl(struct kvm *kvm) 256 { 257 if (kvm->arch.user_cpu_state_ctrl) 258 return; 259 260 VM_EVENT(kvm, 3, "%s", "ENABLE: Userspace CPU state control"); 261 kvm->arch.user_cpu_state_ctrl = 1; 262 } 263 264 /* get the end gfn of the last (highest gfn) memslot */ 265 static inline unsigned long kvm_s390_get_gfn_end(struct kvm_memslots *slots) 266 { 267 struct rb_node *node; 268 struct kvm_memory_slot *ms; 269 270 if (WARN_ON(kvm_memslots_empty(slots))) 271 return 0; 272 273 node = rb_last(&slots->gfn_tree); 274 ms = container_of(node, struct kvm_memory_slot, gfn_node[slots->node_idx]); 275 return ms->base_gfn + ms->npages; 276 } 277 278 static inline u32 kvm_s390_get_gisa_desc(struct kvm *kvm) 279 { 280 u32 gd; 281 282 if (!kvm->arch.gisa_int.origin) 283 return 0; 284 285 gd = virt_to_phys(kvm->arch.gisa_int.origin); 286 287 if (gd && sclp.has_gisaf) 288 gd |= GISA_FORMAT1; 289 return gd; 290 } 291 292 static inline hva_t gpa_to_hva(struct kvm *kvm, gpa_t gpa) 293 { 294 hva_t hva = gfn_to_hva(kvm, gpa_to_gfn(gpa)); 295 296 if (!kvm_is_error_hva(hva)) 297 hva |= offset_in_page(gpa); 298 return hva; 299 } 300 301 /* implemented in pv.c */ 302 int kvm_s390_pv_destroy_cpu(struct kvm_vcpu *vcpu, u16 *rc, u16 *rrc); 303 int kvm_s390_pv_create_cpu(struct kvm_vcpu *vcpu, u16 *rc, u16 *rrc); 304 int kvm_s390_pv_set_aside(struct kvm *kvm, u16 *rc, u16 *rrc); 305 int kvm_s390_pv_deinit_aside_vm(struct kvm *kvm, u16 *rc, u16 *rrc); 306 int kvm_s390_pv_deinit_cleanup_all(struct kvm *kvm, u16 *rc, u16 *rrc); 307 int kvm_s390_pv_deinit_vm(struct kvm *kvm, u16 *rc, u16 *rrc); 308 int kvm_s390_pv_init_vm(struct kvm *kvm, u16 *rc, u16 *rrc); 309 int kvm_s390_pv_set_sec_parms(struct kvm *kvm, void *hdr, u64 length, u16 *rc, 310 u16 *rrc); 311 int kvm_s390_pv_unpack(struct kvm *kvm, unsigned long addr, unsigned long size, 312 unsigned long tweak, u16 *rc, u16 *rrc); 313 int kvm_s390_pv_set_cpu_state(struct kvm_vcpu *vcpu, u8 state); 314 int kvm_s390_pv_dump_cpu(struct kvm_vcpu *vcpu, void *buff, u16 *rc, u16 *rrc); 315 int kvm_s390_pv_dump_stor_state(struct kvm *kvm, void __user *buff_user, 316 u64 *gaddr, u64 buff_user_len, u16 *rc, u16 *rrc); 317 int kvm_s390_pv_dump_complete(struct kvm *kvm, void __user *buff_user, 318 u16 *rc, u16 *rrc); 319 int kvm_s390_pv_destroy_page(struct kvm *kvm, unsigned long gaddr); 320 int kvm_s390_pv_convert_to_secure(struct kvm *kvm, unsigned long gaddr); 321 int kvm_s390_pv_make_secure(struct kvm *kvm, unsigned long gaddr, void *uvcb); 322 323 static inline u64 kvm_s390_pv_get_handle(struct kvm *kvm) 324 { 325 return kvm->arch.pv.handle; 326 } 327 328 static inline u64 kvm_s390_pv_cpu_get_handle(struct kvm_vcpu *vcpu) 329 { 330 return vcpu->arch.pv.handle; 331 } 332 333 /** 334 * __kvm_s390_pv_destroy_page() - Destroy a guest page. 335 * @page: the page to destroy 336 * 337 * An attempt will be made to destroy the given guest page. If the attempt 338 * fails, an attempt is made to export the page. If both attempts fail, an 339 * appropriate error is returned. 340 * 341 * Context: must be called holding the mm lock for gmap->mm 342 */ 343 static inline int __kvm_s390_pv_destroy_page(struct page *page) 344 { 345 struct folio *folio = page_folio(page); 346 int rc; 347 348 /* Large folios cannot be secure. Small folio implies FW_LEVEL_PTE. */ 349 if (folio_test_large(folio)) 350 return -EFAULT; 351 352 rc = uv_destroy_folio(folio); 353 /* 354 * Fault handlers can race; it is possible that two CPUs will fault 355 * on the same secure page. One CPU can destroy the page, reboot, 356 * re-enter secure mode and import it, while the second CPU was 357 * stuck at the beginning of the handler. At some point the second 358 * CPU will be able to progress, and it will not be able to destroy 359 * the page. In that case we do not want to terminate the process, 360 * we instead try to export the page. 361 */ 362 if (rc) 363 rc = uv_convert_from_secure_folio(folio); 364 365 return rc; 366 } 367 368 /* implemented in interrupt.c */ 369 int kvm_s390_handle_wait(struct kvm_vcpu *vcpu); 370 void kvm_s390_vcpu_wakeup(struct kvm_vcpu *vcpu); 371 enum hrtimer_restart kvm_s390_idle_wakeup(struct hrtimer *timer); 372 int __must_check kvm_s390_deliver_pending_interrupts(struct kvm_vcpu *vcpu); 373 void kvm_s390_clear_local_irqs(struct kvm_vcpu *vcpu); 374 void kvm_s390_clear_float_irqs(struct kvm *kvm); 375 int __must_check kvm_s390_inject_vm(struct kvm *kvm, 376 struct kvm_s390_interrupt *s390int); 377 int __must_check kvm_s390_inject_vcpu(struct kvm_vcpu *vcpu, 378 struct kvm_s390_irq *irq); 379 static inline int kvm_s390_inject_prog_irq(struct kvm_vcpu *vcpu, 380 struct kvm_s390_pgm_info *pgm_info) 381 { 382 struct kvm_s390_irq irq = { 383 .type = KVM_S390_PROGRAM_INT, 384 .u.pgm = *pgm_info, 385 }; 386 387 return kvm_s390_inject_vcpu(vcpu, &irq); 388 } 389 static inline int kvm_s390_inject_program_int(struct kvm_vcpu *vcpu, u16 code) 390 { 391 struct kvm_s390_irq irq = { 392 .type = KVM_S390_PROGRAM_INT, 393 .u.pgm.code = code, 394 }; 395 396 return kvm_s390_inject_vcpu(vcpu, &irq); 397 } 398 struct kvm_s390_interrupt_info *kvm_s390_get_io_int(struct kvm *kvm, 399 u64 isc_mask, u32 schid); 400 int kvm_s390_reinject_io_int(struct kvm *kvm, 401 struct kvm_s390_interrupt_info *inti); 402 int kvm_s390_mask_adapter(struct kvm *kvm, unsigned int id, bool masked); 403 404 /* implemented in intercept.c */ 405 u8 kvm_s390_get_ilen(struct kvm_vcpu *vcpu); 406 int kvm_handle_sie_intercept(struct kvm_vcpu *vcpu); 407 static inline void kvm_s390_rewind_psw(struct kvm_vcpu *vcpu, int ilen) 408 { 409 struct kvm_s390_sie_block *sie_block = vcpu->arch.sie_block; 410 411 sie_block->gpsw.addr = __rewind_psw(sie_block->gpsw, ilen); 412 } 413 static inline void kvm_s390_forward_psw(struct kvm_vcpu *vcpu, int ilen) 414 { 415 kvm_s390_rewind_psw(vcpu, -ilen); 416 } 417 static inline void kvm_s390_retry_instr(struct kvm_vcpu *vcpu) 418 { 419 /* don't inject PER events if we re-execute the instruction */ 420 vcpu->arch.sie_block->icptstatus &= ~0x02; 421 kvm_s390_rewind_psw(vcpu, kvm_s390_get_ilen(vcpu)); 422 } 423 424 int handle_sthyi(struct kvm_vcpu *vcpu); 425 426 /* implemented in priv.c */ 427 int is_valid_psw(psw_t *psw); 428 int kvm_s390_handle_aa(struct kvm_vcpu *vcpu); 429 int kvm_s390_handle_b2(struct kvm_vcpu *vcpu); 430 int kvm_s390_handle_e3(struct kvm_vcpu *vcpu); 431 int kvm_s390_handle_e5(struct kvm_vcpu *vcpu); 432 int kvm_s390_handle_01(struct kvm_vcpu *vcpu); 433 int kvm_s390_handle_b9(struct kvm_vcpu *vcpu); 434 int kvm_s390_handle_lpsw(struct kvm_vcpu *vcpu); 435 int kvm_s390_handle_stctl(struct kvm_vcpu *vcpu); 436 int kvm_s390_handle_lctl(struct kvm_vcpu *vcpu); 437 int kvm_s390_handle_eb(struct kvm_vcpu *vcpu); 438 int kvm_s390_skey_check_enable(struct kvm_vcpu *vcpu); 439 440 /* implemented in vsie.c */ 441 int kvm_s390_handle_vsie(struct kvm_vcpu *vcpu); 442 void kvm_s390_vsie_kick(struct kvm_vcpu *vcpu); 443 void kvm_s390_vsie_gmap_notifier(struct gmap *gmap, gpa_t start, gpa_t end); 444 void kvm_s390_vsie_init(struct kvm *kvm); 445 void kvm_s390_vsie_destroy(struct kvm *kvm); 446 447 /* implemented in sigp.c */ 448 int kvm_s390_handle_sigp(struct kvm_vcpu *vcpu); 449 int kvm_s390_handle_sigp_pei(struct kvm_vcpu *vcpu); 450 451 /* implemented in kvm-s390.c */ 452 int kvm_s390_try_set_tod_clock(struct kvm *kvm, const struct kvm_s390_vm_tod_clock *gtod); 453 int kvm_s390_store_status_unloaded(struct kvm_vcpu *vcpu, unsigned long addr); 454 int kvm_s390_vcpu_store_status(struct kvm_vcpu *vcpu, unsigned long addr); 455 int kvm_s390_vcpu_start(struct kvm_vcpu *vcpu); 456 int kvm_s390_vcpu_stop(struct kvm_vcpu *vcpu); 457 void kvm_s390_vcpu_block(struct kvm_vcpu *vcpu); 458 void kvm_s390_vcpu_unblock(struct kvm_vcpu *vcpu); 459 bool kvm_s390_vcpu_sie_inhibited(struct kvm_vcpu *vcpu); 460 void exit_sie(struct kvm_vcpu *vcpu); 461 void kvm_s390_sync_request(int req, struct kvm_vcpu *vcpu); 462 int kvm_s390_vcpu_setup_cmma(struct kvm_vcpu *vcpu); 463 void kvm_s390_vcpu_unsetup_cmma(struct kvm_vcpu *vcpu); 464 void kvm_s390_set_cpu_timer(struct kvm_vcpu *vcpu, __u64 cputm); 465 __u64 kvm_s390_get_cpu_timer(struct kvm_vcpu *vcpu); 466 int kvm_s390_cpus_from_pv(struct kvm *kvm, u16 *rc, u16 *rrc); 467 int __kvm_s390_mprotect_many(struct gmap *gmap, gpa_t gpa, u8 npages, unsigned int prot, 468 unsigned long bits); 469 470 bool kvm_arch_setup_async_pf(struct kvm_vcpu *vcpu); 471 472 /* implemented in diag.c */ 473 int kvm_s390_handle_diag(struct kvm_vcpu *vcpu); 474 475 static inline void kvm_s390_vcpu_block_all(struct kvm *kvm) 476 { 477 unsigned long i; 478 struct kvm_vcpu *vcpu; 479 480 WARN_ON(!mutex_is_locked(&kvm->lock)); 481 kvm_for_each_vcpu(i, vcpu, kvm) 482 kvm_s390_vcpu_block(vcpu); 483 } 484 485 static inline void kvm_s390_vcpu_unblock_all(struct kvm *kvm) 486 { 487 unsigned long i; 488 struct kvm_vcpu *vcpu; 489 490 kvm_for_each_vcpu(i, vcpu, kvm) 491 kvm_s390_vcpu_unblock(vcpu); 492 } 493 494 static inline u64 kvm_s390_get_tod_clock_fast(struct kvm *kvm) 495 { 496 u64 rc; 497 498 preempt_disable(); 499 rc = get_tod_clock_fast() + kvm->arch.epoch; 500 preempt_enable(); 501 return rc; 502 } 503 504 /** 505 * kvm_s390_inject_prog_cond - conditionally inject a program check 506 * @vcpu: virtual cpu 507 * @rc: original return/error code 508 * 509 * This function is supposed to be used after regular guest access functions 510 * failed, to conditionally inject a program check to a vcpu. The typical 511 * pattern would look like 512 * 513 * rc = write_guest(vcpu, addr, data, len); 514 * if (rc) 515 * return kvm_s390_inject_prog_cond(vcpu, rc); 516 * 517 * A negative return code from guest access functions implies an internal error 518 * like e.g. out of memory. In these cases no program check should be injected 519 * to the guest. 520 * A positive value implies that an exception happened while accessing a guest's 521 * memory. In this case all data belonging to the corresponding program check 522 * has been stored in vcpu->arch.pgm and can be injected with 523 * kvm_s390_inject_prog_irq(). 524 * 525 * Returns: - the original @rc value if @rc was negative (internal error) 526 * - zero if @rc was already zero 527 * - zero or error code from injecting if @rc was positive 528 * (program check injected to @vcpu) 529 */ 530 static inline int kvm_s390_inject_prog_cond(struct kvm_vcpu *vcpu, int rc) 531 { 532 if (rc <= 0) 533 return rc; 534 return kvm_s390_inject_prog_irq(vcpu, &vcpu->arch.pgm); 535 } 536 537 int s390int_to_s390irq(struct kvm_s390_interrupt *s390int, 538 struct kvm_s390_irq *s390irq); 539 540 /* implemented in interrupt.c */ 541 int kvm_s390_vcpu_has_irq(struct kvm_vcpu *vcpu, int exclude_stop); 542 int psw_extint_disabled(struct kvm_vcpu *vcpu); 543 void kvm_s390_destroy_adapters(struct kvm *kvm); 544 int kvm_s390_ext_call_pending(struct kvm_vcpu *vcpu); 545 extern struct kvm_device_ops kvm_flic_ops; 546 int kvm_s390_is_stop_irq_pending(struct kvm_vcpu *vcpu); 547 int kvm_s390_is_restart_irq_pending(struct kvm_vcpu *vcpu); 548 void kvm_s390_clear_stop_irq(struct kvm_vcpu *vcpu); 549 int kvm_s390_set_irq_state(struct kvm_vcpu *vcpu, 550 void __user *buf, int len); 551 int kvm_s390_get_irq_state(struct kvm_vcpu *vcpu, 552 __u8 __user *buf, int len); 553 void kvm_s390_gisa_init(struct kvm *kvm); 554 void kvm_s390_gisa_clear(struct kvm *kvm); 555 void kvm_s390_gisa_destroy(struct kvm *kvm); 556 void kvm_s390_gisa_disable(struct kvm *kvm); 557 void kvm_s390_gisa_enable(struct kvm *kvm); 558 int __init kvm_s390_gib_init(u8 nisc); 559 void kvm_s390_gib_destroy(void); 560 561 /* implemented in guestdbg.c */ 562 void kvm_s390_backup_guest_per_regs(struct kvm_vcpu *vcpu); 563 void kvm_s390_restore_guest_per_regs(struct kvm_vcpu *vcpu); 564 void kvm_s390_patch_guest_per_regs(struct kvm_vcpu *vcpu); 565 int kvm_s390_import_bp_data(struct kvm_vcpu *vcpu, 566 struct kvm_guest_debug *dbg); 567 void kvm_s390_clear_bp_data(struct kvm_vcpu *vcpu); 568 void kvm_s390_prepare_debug_exit(struct kvm_vcpu *vcpu); 569 int kvm_s390_handle_per_ifetch_icpt(struct kvm_vcpu *vcpu); 570 int kvm_s390_handle_per_event(struct kvm_vcpu *vcpu); 571 572 static inline int kvm_s390_use_sca_entries(void) 573 { 574 /* 575 * Without SIGP interpretation, only SRS interpretation (if available) 576 * might use the entries. By not setting the entries and keeping them 577 * invalid, hardware will not access them but intercept. 578 */ 579 return sclp.has_sigpif && sclp.has_esca; 580 } 581 void kvm_s390_reinject_machine_check(struct kvm_vcpu *vcpu, 582 struct mcck_volatile_info *mcck_info); 583 584 static inline bool kvm_s390_cur_gmap_fault_is_write(void) 585 { 586 if (current->thread.gmap_int_code == PGM_PROTECTION) 587 return true; 588 return test_facility(75) && (current->thread.gmap_teid.fsi == TEID_FSI_STORE); 589 } 590 591 /** 592 * kvm_s390_vcpu_crypto_reset_all 593 * 594 * Reset the crypto attributes for each vcpu. This can be done while the vcpus 595 * are running as each vcpu will be removed from SIE before resetting the crypt 596 * attributes and restored to SIE afterward. 597 * 598 * Note: The kvm->lock must be held while calling this function 599 * 600 * @kvm: the KVM guest 601 */ 602 void kvm_s390_vcpu_crypto_reset_all(struct kvm *kvm); 603 604 /** 605 * kvm_s390_vcpu_pci_enable_interp 606 * 607 * Set the associated PCI attributes for each vcpu to allow for zPCI Load/Store 608 * interpretation as well as adapter interruption forwarding. 609 * 610 * @kvm: the KVM guest 611 */ 612 void kvm_s390_vcpu_pci_enable_interp(struct kvm *kvm); 613 614 /** 615 * diag9c_forwarding_hz 616 * 617 * Set the maximum number of diag9c forwarding per second 618 */ 619 extern unsigned int diag9c_forwarding_hz; 620 621 #endif 622