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