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