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 23 #define KVM_S390_UCONTROL_MEMSLOT (KVM_USER_MEM_SLOTS + 0) 24 25 static inline void kvm_s390_fpu_store(struct kvm_run *run) 26 { 27 fpu_stfpc(&run->s.regs.fpc); 28 if (cpu_has_vx()) 29 save_vx_regs((__vector128 *)&run->s.regs.vrs); 30 else 31 save_fp_regs((freg_t *)&run->s.regs.fprs); 32 } 33 34 static inline void kvm_s390_fpu_load(struct kvm_run *run) 35 { 36 fpu_lfpc_safe(&run->s.regs.fpc); 37 if (cpu_has_vx()) 38 load_vx_regs((__vector128 *)&run->s.regs.vrs); 39 else 40 load_fp_regs((freg_t *)&run->s.regs.fprs); 41 } 42 43 /* Transactional Memory Execution related macros */ 44 #define IS_TE_ENABLED(vcpu) ((vcpu->arch.sie_block->ecb & ECB_TE)) 45 #define TDB_FORMAT1 1 46 #define IS_ITDB_VALID(vcpu) \ 47 ((*(char *)phys_to_virt((vcpu)->arch.sie_block->itdba) == TDB_FORMAT1)) 48 49 extern debug_info_t *kvm_s390_dbf; 50 extern debug_info_t *kvm_s390_dbf_uv; 51 52 #define KVM_UV_EVENT(d_kvm, d_loglevel, d_string, d_args...)\ 53 do { \ 54 debug_sprintf_event((d_kvm)->arch.dbf, d_loglevel, d_string "\n", \ 55 d_args); \ 56 debug_sprintf_event(kvm_s390_dbf_uv, d_loglevel, \ 57 "%d: " d_string "\n", (d_kvm)->userspace_pid, \ 58 d_args); \ 59 } while (0) 60 61 #define KVM_EVENT(d_loglevel, d_string, d_args...)\ 62 do { \ 63 debug_sprintf_event(kvm_s390_dbf, d_loglevel, d_string "\n", \ 64 d_args); \ 65 } while (0) 66 67 #define VM_EVENT(d_kvm, d_loglevel, d_string, d_args...)\ 68 do { \ 69 debug_sprintf_event(d_kvm->arch.dbf, d_loglevel, d_string "\n", \ 70 d_args); \ 71 } while (0) 72 73 #define VCPU_EVENT(d_vcpu, d_loglevel, d_string, d_args...)\ 74 do { \ 75 debug_sprintf_event(d_vcpu->kvm->arch.dbf, d_loglevel, \ 76 "%02d[%016lx-%016lx]: " d_string "\n", d_vcpu->vcpu_id, \ 77 d_vcpu->arch.sie_block->gpsw.mask, d_vcpu->arch.sie_block->gpsw.addr,\ 78 d_args); \ 79 } while (0) 80 81 static inline void kvm_s390_set_cpuflags(struct kvm_vcpu *vcpu, u32 flags) 82 { 83 atomic_or(flags, &vcpu->arch.sie_block->cpuflags); 84 } 85 86 static inline void kvm_s390_clear_cpuflags(struct kvm_vcpu *vcpu, u32 flags) 87 { 88 atomic_andnot(flags, &vcpu->arch.sie_block->cpuflags); 89 } 90 91 static inline bool kvm_s390_test_cpuflags(struct kvm_vcpu *vcpu, u32 flags) 92 { 93 return (atomic_read(&vcpu->arch.sie_block->cpuflags) & flags) == flags; 94 } 95 96 static inline int is_vcpu_stopped(struct kvm_vcpu *vcpu) 97 { 98 return kvm_s390_test_cpuflags(vcpu, CPUSTAT_STOPPED); 99 } 100 101 static inline int is_vcpu_idle(struct kvm_vcpu *vcpu) 102 { 103 return test_bit(vcpu->vcpu_idx, vcpu->kvm->arch.idle_mask); 104 } 105 106 static inline int kvm_is_ucontrol(struct kvm *kvm) 107 { 108 #ifdef CONFIG_KVM_S390_UCONTROL 109 if (kvm->arch.gmap) 110 return 0; 111 return 1; 112 #else 113 return 0; 114 #endif 115 } 116 117 #define GUEST_PREFIX_SHIFT 13 118 static inline u32 kvm_s390_get_prefix(struct kvm_vcpu *vcpu) 119 { 120 return vcpu->arch.sie_block->prefix << GUEST_PREFIX_SHIFT; 121 } 122 123 static inline void kvm_s390_set_prefix(struct kvm_vcpu *vcpu, u32 prefix) 124 { 125 VCPU_EVENT(vcpu, 3, "set prefix of cpu %03u to 0x%x", vcpu->vcpu_id, 126 prefix); 127 vcpu->arch.sie_block->prefix = prefix >> GUEST_PREFIX_SHIFT; 128 kvm_make_request(KVM_REQ_TLB_FLUSH, vcpu); 129 kvm_make_request(KVM_REQ_REFRESH_GUEST_PREFIX, vcpu); 130 } 131 132 static inline u64 kvm_s390_get_base_disp_s(struct kvm_vcpu *vcpu, u8 *ar) 133 { 134 u32 base2 = vcpu->arch.sie_block->ipb >> 28; 135 u32 disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16); 136 137 if (ar) 138 *ar = base2; 139 140 return (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2; 141 } 142 143 static inline u64 kvm_s390_get_base_disp_siy(struct kvm_vcpu *vcpu, u8 *ar) 144 { 145 u32 base1 = vcpu->arch.sie_block->ipb >> 28; 146 s64 disp1; 147 148 /* The displacement is a 20bit _SIGNED_ value */ 149 disp1 = sign_extend64(((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16) + 150 ((vcpu->arch.sie_block->ipb & 0xff00) << 4), 19); 151 152 if (ar) 153 *ar = base1; 154 155 return (base1 ? vcpu->run->s.regs.gprs[base1] : 0) + disp1; 156 } 157 158 static inline void kvm_s390_get_base_disp_sse(struct kvm_vcpu *vcpu, 159 u64 *address1, u64 *address2, 160 u8 *ar_b1, u8 *ar_b2) 161 { 162 u32 base1 = (vcpu->arch.sie_block->ipb & 0xf0000000) >> 28; 163 u32 disp1 = (vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16; 164 u32 base2 = (vcpu->arch.sie_block->ipb & 0xf000) >> 12; 165 u32 disp2 = vcpu->arch.sie_block->ipb & 0x0fff; 166 167 *address1 = (base1 ? vcpu->run->s.regs.gprs[base1] : 0) + disp1; 168 *address2 = (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2; 169 170 if (ar_b1) 171 *ar_b1 = base1; 172 if (ar_b2) 173 *ar_b2 = base2; 174 } 175 176 static inline void kvm_s390_get_regs_rre(struct kvm_vcpu *vcpu, int *r1, int *r2) 177 { 178 if (r1) 179 *r1 = (vcpu->arch.sie_block->ipb & 0x00f00000) >> 20; 180 if (r2) 181 *r2 = (vcpu->arch.sie_block->ipb & 0x000f0000) >> 16; 182 } 183 184 static inline u64 kvm_s390_get_base_disp_rsy(struct kvm_vcpu *vcpu, u8 *ar) 185 { 186 u32 base2 = vcpu->arch.sie_block->ipb >> 28; 187 u32 disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16) + 188 ((vcpu->arch.sie_block->ipb & 0xff00) << 4); 189 /* The displacement is a 20bit _SIGNED_ value */ 190 if (disp2 & 0x80000) 191 disp2+=0xfff00000; 192 193 if (ar) 194 *ar = base2; 195 196 return (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + (long)(int)disp2; 197 } 198 199 static inline u64 kvm_s390_get_base_disp_rs(struct kvm_vcpu *vcpu, u8 *ar) 200 { 201 u32 base2 = vcpu->arch.sie_block->ipb >> 28; 202 u32 disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16); 203 204 if (ar) 205 *ar = base2; 206 207 return (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2; 208 } 209 210 /* Set the condition code in the guest program status word */ 211 static inline void kvm_s390_set_psw_cc(struct kvm_vcpu *vcpu, unsigned long cc) 212 { 213 vcpu->arch.sie_block->gpsw.mask &= ~(3UL << 44); 214 vcpu->arch.sie_block->gpsw.mask |= cc << 44; 215 } 216 217 /* test availability of facility in a kvm instance */ 218 static inline int test_kvm_facility(struct kvm *kvm, unsigned long nr) 219 { 220 return __test_facility(nr, kvm->arch.model.fac_mask) && 221 __test_facility(nr, kvm->arch.model.fac_list); 222 } 223 224 static inline int set_kvm_facility(u64 *fac_list, unsigned long nr) 225 { 226 unsigned char *ptr; 227 228 if (nr >= MAX_FACILITY_BIT) 229 return -EINVAL; 230 ptr = (unsigned char *) fac_list + (nr >> 3); 231 *ptr |= (0x80UL >> (nr & 7)); 232 return 0; 233 } 234 235 static inline int test_kvm_cpu_feat(struct kvm *kvm, unsigned long nr) 236 { 237 WARN_ON_ONCE(nr >= KVM_S390_VM_CPU_FEAT_NR_BITS); 238 return test_bit_inv(nr, kvm->arch.cpu_feat); 239 } 240 241 /* are cpu states controlled by user space */ 242 static inline int kvm_s390_user_cpu_state_ctrl(struct kvm *kvm) 243 { 244 return kvm->arch.user_cpu_state_ctrl != 0; 245 } 246 247 static inline void kvm_s390_set_user_cpu_state_ctrl(struct kvm *kvm) 248 { 249 if (kvm->arch.user_cpu_state_ctrl) 250 return; 251 252 VM_EVENT(kvm, 3, "%s", "ENABLE: Userspace CPU state control"); 253 kvm->arch.user_cpu_state_ctrl = 1; 254 } 255 256 /* get the end gfn of the last (highest gfn) memslot */ 257 static inline unsigned long kvm_s390_get_gfn_end(struct kvm_memslots *slots) 258 { 259 struct rb_node *node; 260 struct kvm_memory_slot *ms; 261 262 if (WARN_ON(kvm_memslots_empty(slots))) 263 return 0; 264 265 node = rb_last(&slots->gfn_tree); 266 ms = container_of(node, struct kvm_memory_slot, gfn_node[slots->node_idx]); 267 return ms->base_gfn + ms->npages; 268 } 269 270 static inline u32 kvm_s390_get_gisa_desc(struct kvm *kvm) 271 { 272 u32 gd; 273 274 if (!kvm->arch.gisa_int.origin) 275 return 0; 276 277 gd = virt_to_phys(kvm->arch.gisa_int.origin); 278 279 if (gd && sclp.has_gisaf) 280 gd |= GISA_FORMAT1; 281 return gd; 282 } 283 284 static inline hva_t gpa_to_hva(struct kvm *kvm, gpa_t gpa) 285 { 286 hva_t hva = gfn_to_hva(kvm, gpa_to_gfn(gpa)); 287 288 if (!kvm_is_error_hva(hva)) 289 hva |= offset_in_page(gpa); 290 return hva; 291 } 292 293 /* implemented in pv.c */ 294 int kvm_s390_pv_destroy_cpu(struct kvm_vcpu *vcpu, u16 *rc, u16 *rrc); 295 int kvm_s390_pv_create_cpu(struct kvm_vcpu *vcpu, u16 *rc, u16 *rrc); 296 int kvm_s390_pv_set_aside(struct kvm *kvm, u16 *rc, u16 *rrc); 297 int kvm_s390_pv_deinit_aside_vm(struct kvm *kvm, u16 *rc, u16 *rrc); 298 int kvm_s390_pv_deinit_cleanup_all(struct kvm *kvm, u16 *rc, u16 *rrc); 299 int kvm_s390_pv_deinit_vm(struct kvm *kvm, u16 *rc, u16 *rrc); 300 int kvm_s390_pv_init_vm(struct kvm *kvm, u16 *rc, u16 *rrc); 301 int kvm_s390_pv_set_sec_parms(struct kvm *kvm, void *hdr, u64 length, u16 *rc, 302 u16 *rrc); 303 int kvm_s390_pv_unpack(struct kvm *kvm, unsigned long addr, unsigned long size, 304 unsigned long tweak, u16 *rc, u16 *rrc); 305 int kvm_s390_pv_set_cpu_state(struct kvm_vcpu *vcpu, u8 state); 306 int kvm_s390_pv_dump_cpu(struct kvm_vcpu *vcpu, void *buff, u16 *rc, u16 *rrc); 307 int kvm_s390_pv_dump_stor_state(struct kvm *kvm, void __user *buff_user, 308 u64 *gaddr, u64 buff_user_len, u16 *rc, u16 *rrc); 309 int kvm_s390_pv_dump_complete(struct kvm *kvm, void __user *buff_user, 310 u16 *rc, u16 *rrc); 311 312 static inline u64 kvm_s390_pv_get_handle(struct kvm *kvm) 313 { 314 return kvm->arch.pv.handle; 315 } 316 317 static inline u64 kvm_s390_pv_cpu_get_handle(struct kvm_vcpu *vcpu) 318 { 319 return vcpu->arch.pv.handle; 320 } 321 322 /* implemented in interrupt.c */ 323 int kvm_s390_handle_wait(struct kvm_vcpu *vcpu); 324 void kvm_s390_vcpu_wakeup(struct kvm_vcpu *vcpu); 325 enum hrtimer_restart kvm_s390_idle_wakeup(struct hrtimer *timer); 326 int __must_check kvm_s390_deliver_pending_interrupts(struct kvm_vcpu *vcpu); 327 void kvm_s390_clear_local_irqs(struct kvm_vcpu *vcpu); 328 void kvm_s390_clear_float_irqs(struct kvm *kvm); 329 int __must_check kvm_s390_inject_vm(struct kvm *kvm, 330 struct kvm_s390_interrupt *s390int); 331 int __must_check kvm_s390_inject_vcpu(struct kvm_vcpu *vcpu, 332 struct kvm_s390_irq *irq); 333 static inline int kvm_s390_inject_prog_irq(struct kvm_vcpu *vcpu, 334 struct kvm_s390_pgm_info *pgm_info) 335 { 336 struct kvm_s390_irq irq = { 337 .type = KVM_S390_PROGRAM_INT, 338 .u.pgm = *pgm_info, 339 }; 340 341 return kvm_s390_inject_vcpu(vcpu, &irq); 342 } 343 static inline int kvm_s390_inject_program_int(struct kvm_vcpu *vcpu, u16 code) 344 { 345 struct kvm_s390_irq irq = { 346 .type = KVM_S390_PROGRAM_INT, 347 .u.pgm.code = code, 348 }; 349 350 return kvm_s390_inject_vcpu(vcpu, &irq); 351 } 352 struct kvm_s390_interrupt_info *kvm_s390_get_io_int(struct kvm *kvm, 353 u64 isc_mask, u32 schid); 354 int kvm_s390_reinject_io_int(struct kvm *kvm, 355 struct kvm_s390_interrupt_info *inti); 356 int kvm_s390_mask_adapter(struct kvm *kvm, unsigned int id, bool masked); 357 358 /* implemented in intercept.c */ 359 u8 kvm_s390_get_ilen(struct kvm_vcpu *vcpu); 360 int kvm_handle_sie_intercept(struct kvm_vcpu *vcpu); 361 static inline void kvm_s390_rewind_psw(struct kvm_vcpu *vcpu, int ilen) 362 { 363 struct kvm_s390_sie_block *sie_block = vcpu->arch.sie_block; 364 365 sie_block->gpsw.addr = __rewind_psw(sie_block->gpsw, ilen); 366 } 367 static inline void kvm_s390_forward_psw(struct kvm_vcpu *vcpu, int ilen) 368 { 369 kvm_s390_rewind_psw(vcpu, -ilen); 370 } 371 static inline void kvm_s390_retry_instr(struct kvm_vcpu *vcpu) 372 { 373 /* don't inject PER events if we re-execute the instruction */ 374 vcpu->arch.sie_block->icptstatus &= ~0x02; 375 kvm_s390_rewind_psw(vcpu, kvm_s390_get_ilen(vcpu)); 376 } 377 378 int handle_sthyi(struct kvm_vcpu *vcpu); 379 380 /* implemented in priv.c */ 381 int is_valid_psw(psw_t *psw); 382 int kvm_s390_handle_aa(struct kvm_vcpu *vcpu); 383 int kvm_s390_handle_b2(struct kvm_vcpu *vcpu); 384 int kvm_s390_handle_e3(struct kvm_vcpu *vcpu); 385 int kvm_s390_handle_e5(struct kvm_vcpu *vcpu); 386 int kvm_s390_handle_01(struct kvm_vcpu *vcpu); 387 int kvm_s390_handle_b9(struct kvm_vcpu *vcpu); 388 int kvm_s390_handle_lpsw(struct kvm_vcpu *vcpu); 389 int kvm_s390_handle_stctl(struct kvm_vcpu *vcpu); 390 int kvm_s390_handle_lctl(struct kvm_vcpu *vcpu); 391 int kvm_s390_handle_eb(struct kvm_vcpu *vcpu); 392 int kvm_s390_skey_check_enable(struct kvm_vcpu *vcpu); 393 394 /* implemented in vsie.c */ 395 int kvm_s390_handle_vsie(struct kvm_vcpu *vcpu); 396 void kvm_s390_vsie_kick(struct kvm_vcpu *vcpu); 397 void kvm_s390_vsie_gmap_notifier(struct gmap *gmap, unsigned long start, 398 unsigned long end); 399 void kvm_s390_vsie_init(struct kvm *kvm); 400 void kvm_s390_vsie_destroy(struct kvm *kvm); 401 402 /* implemented in sigp.c */ 403 int kvm_s390_handle_sigp(struct kvm_vcpu *vcpu); 404 int kvm_s390_handle_sigp_pei(struct kvm_vcpu *vcpu); 405 406 /* implemented in kvm-s390.c */ 407 int kvm_s390_try_set_tod_clock(struct kvm *kvm, const struct kvm_s390_vm_tod_clock *gtod); 408 int kvm_s390_store_status_unloaded(struct kvm_vcpu *vcpu, unsigned long addr); 409 int kvm_s390_vcpu_store_status(struct kvm_vcpu *vcpu, unsigned long addr); 410 int kvm_s390_vcpu_start(struct kvm_vcpu *vcpu); 411 int kvm_s390_vcpu_stop(struct kvm_vcpu *vcpu); 412 void kvm_s390_vcpu_block(struct kvm_vcpu *vcpu); 413 void kvm_s390_vcpu_unblock(struct kvm_vcpu *vcpu); 414 bool kvm_s390_vcpu_sie_inhibited(struct kvm_vcpu *vcpu); 415 void exit_sie(struct kvm_vcpu *vcpu); 416 void kvm_s390_sync_request(int req, struct kvm_vcpu *vcpu); 417 int kvm_s390_vcpu_setup_cmma(struct kvm_vcpu *vcpu); 418 void kvm_s390_vcpu_unsetup_cmma(struct kvm_vcpu *vcpu); 419 void kvm_s390_set_cpu_timer(struct kvm_vcpu *vcpu, __u64 cputm); 420 __u64 kvm_s390_get_cpu_timer(struct kvm_vcpu *vcpu); 421 int kvm_s390_cpus_from_pv(struct kvm *kvm, u16 *rc, u16 *rrc); 422 int __kvm_s390_handle_dat_fault(struct kvm_vcpu *vcpu, gfn_t gfn, gpa_t gaddr, unsigned int flags); 423 int __kvm_s390_mprotect_many(struct gmap *gmap, gpa_t gpa, u8 npages, unsigned int prot, 424 unsigned long bits); 425 426 static inline int kvm_s390_handle_dat_fault(struct kvm_vcpu *vcpu, gpa_t gaddr, unsigned int flags) 427 { 428 return __kvm_s390_handle_dat_fault(vcpu, gpa_to_gfn(gaddr), gaddr, flags); 429 } 430 431 /* implemented in diag.c */ 432 int kvm_s390_handle_diag(struct kvm_vcpu *vcpu); 433 434 static inline void kvm_s390_vcpu_block_all(struct kvm *kvm) 435 { 436 unsigned long i; 437 struct kvm_vcpu *vcpu; 438 439 WARN_ON(!mutex_is_locked(&kvm->lock)); 440 kvm_for_each_vcpu(i, vcpu, kvm) 441 kvm_s390_vcpu_block(vcpu); 442 } 443 444 static inline void kvm_s390_vcpu_unblock_all(struct kvm *kvm) 445 { 446 unsigned long i; 447 struct kvm_vcpu *vcpu; 448 449 kvm_for_each_vcpu(i, vcpu, kvm) 450 kvm_s390_vcpu_unblock(vcpu); 451 } 452 453 static inline u64 kvm_s390_get_tod_clock_fast(struct kvm *kvm) 454 { 455 u64 rc; 456 457 preempt_disable(); 458 rc = get_tod_clock_fast() + kvm->arch.epoch; 459 preempt_enable(); 460 return rc; 461 } 462 463 /** 464 * kvm_s390_inject_prog_cond - conditionally inject a program check 465 * @vcpu: virtual cpu 466 * @rc: original return/error code 467 * 468 * This function is supposed to be used after regular guest access functions 469 * failed, to conditionally inject a program check to a vcpu. The typical 470 * pattern would look like 471 * 472 * rc = write_guest(vcpu, addr, data, len); 473 * if (rc) 474 * return kvm_s390_inject_prog_cond(vcpu, rc); 475 * 476 * A negative return code from guest access functions implies an internal error 477 * like e.g. out of memory. In these cases no program check should be injected 478 * to the guest. 479 * A positive value implies that an exception happened while accessing a guest's 480 * memory. In this case all data belonging to the corresponding program check 481 * has been stored in vcpu->arch.pgm and can be injected with 482 * kvm_s390_inject_prog_irq(). 483 * 484 * Returns: - the original @rc value if @rc was negative (internal error) 485 * - zero if @rc was already zero 486 * - zero or error code from injecting if @rc was positive 487 * (program check injected to @vcpu) 488 */ 489 static inline int kvm_s390_inject_prog_cond(struct kvm_vcpu *vcpu, int rc) 490 { 491 if (rc <= 0) 492 return rc; 493 return kvm_s390_inject_prog_irq(vcpu, &vcpu->arch.pgm); 494 } 495 496 int s390int_to_s390irq(struct kvm_s390_interrupt *s390int, 497 struct kvm_s390_irq *s390irq); 498 499 /* implemented in interrupt.c */ 500 int kvm_s390_vcpu_has_irq(struct kvm_vcpu *vcpu, int exclude_stop); 501 int psw_extint_disabled(struct kvm_vcpu *vcpu); 502 void kvm_s390_destroy_adapters(struct kvm *kvm); 503 int kvm_s390_ext_call_pending(struct kvm_vcpu *vcpu); 504 extern struct kvm_device_ops kvm_flic_ops; 505 int kvm_s390_is_stop_irq_pending(struct kvm_vcpu *vcpu); 506 int kvm_s390_is_restart_irq_pending(struct kvm_vcpu *vcpu); 507 void kvm_s390_clear_stop_irq(struct kvm_vcpu *vcpu); 508 int kvm_s390_set_irq_state(struct kvm_vcpu *vcpu, 509 void __user *buf, int len); 510 int kvm_s390_get_irq_state(struct kvm_vcpu *vcpu, 511 __u8 __user *buf, int len); 512 void kvm_s390_gisa_init(struct kvm *kvm); 513 void kvm_s390_gisa_clear(struct kvm *kvm); 514 void kvm_s390_gisa_destroy(struct kvm *kvm); 515 void kvm_s390_gisa_disable(struct kvm *kvm); 516 void kvm_s390_gisa_enable(struct kvm *kvm); 517 int __init kvm_s390_gib_init(u8 nisc); 518 void kvm_s390_gib_destroy(void); 519 520 /* implemented in guestdbg.c */ 521 void kvm_s390_backup_guest_per_regs(struct kvm_vcpu *vcpu); 522 void kvm_s390_restore_guest_per_regs(struct kvm_vcpu *vcpu); 523 void kvm_s390_patch_guest_per_regs(struct kvm_vcpu *vcpu); 524 int kvm_s390_import_bp_data(struct kvm_vcpu *vcpu, 525 struct kvm_guest_debug *dbg); 526 void kvm_s390_clear_bp_data(struct kvm_vcpu *vcpu); 527 void kvm_s390_prepare_debug_exit(struct kvm_vcpu *vcpu); 528 int kvm_s390_handle_per_ifetch_icpt(struct kvm_vcpu *vcpu); 529 int kvm_s390_handle_per_event(struct kvm_vcpu *vcpu); 530 531 /* support for Basic/Extended SCA handling */ 532 static inline union ipte_control *kvm_s390_get_ipte_control(struct kvm *kvm) 533 { 534 struct bsca_block *sca = kvm->arch.sca; /* SCA version doesn't matter */ 535 536 return &sca->ipte_control; 537 } 538 static inline int kvm_s390_use_sca_entries(void) 539 { 540 /* 541 * Without SIGP interpretation, only SRS interpretation (if available) 542 * might use the entries. By not setting the entries and keeping them 543 * invalid, hardware will not access them but intercept. 544 */ 545 return sclp.has_sigpif; 546 } 547 void kvm_s390_reinject_machine_check(struct kvm_vcpu *vcpu, 548 struct mcck_volatile_info *mcck_info); 549 550 static inline bool kvm_s390_cur_gmap_fault_is_write(void) 551 { 552 if (current->thread.gmap_int_code == PGM_PROTECTION) 553 return true; 554 return test_facility(75) && (current->thread.gmap_teid.fsi == TEID_FSI_STORE); 555 } 556 557 /** 558 * kvm_s390_vcpu_crypto_reset_all 559 * 560 * Reset the crypto attributes for each vcpu. This can be done while the vcpus 561 * are running as each vcpu will be removed from SIE before resetting the crypt 562 * attributes and restored to SIE afterward. 563 * 564 * Note: The kvm->lock must be held while calling this function 565 * 566 * @kvm: the KVM guest 567 */ 568 void kvm_s390_vcpu_crypto_reset_all(struct kvm *kvm); 569 570 /** 571 * kvm_s390_vcpu_pci_enable_interp 572 * 573 * Set the associated PCI attributes for each vcpu to allow for zPCI Load/Store 574 * interpretation as well as adapter interruption forwarding. 575 * 576 * @kvm: the KVM guest 577 */ 578 void kvm_s390_vcpu_pci_enable_interp(struct kvm *kvm); 579 580 /** 581 * diag9c_forwarding_hz 582 * 583 * Set the maximum number of diag9c forwarding per second 584 */ 585 extern unsigned int diag9c_forwarding_hz; 586 587 #endif 588