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 kvm_s390_fpu_store(struct kvm_run * run)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 kvm_s390_fpu_load(struct kvm_run * run)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 kvm_s390_set_cpuflags(struct kvm_vcpu * vcpu,u32 flags)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 kvm_s390_clear_cpuflags(struct kvm_vcpu * vcpu,u32 flags)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 kvm_s390_test_cpuflags(struct kvm_vcpu * vcpu,u32 flags)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 is_vcpu_stopped(struct kvm_vcpu * vcpu)94 static inline int is_vcpu_stopped(struct kvm_vcpu *vcpu) 95 { 96 return kvm_s390_test_cpuflags(vcpu, CPUSTAT_STOPPED); 97 } 98 is_vcpu_idle(struct kvm_vcpu * vcpu)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 kvm_is_ucontrol(struct kvm * kvm)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 kvm_s390_get_prefix(struct kvm_vcpu * vcpu)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 kvm_s390_set_prefix(struct kvm_vcpu * vcpu,u32 prefix)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 kvm_s390_get_base_disp_s(struct kvm_vcpu * vcpu,u8 * ar)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 kvm_s390_get_base_disp_siy(struct kvm_vcpu * vcpu,u8 * ar)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 kvm_s390_get_base_disp_sse(struct kvm_vcpu * vcpu,u64 * address1,u64 * address2,u8 * ar_b1,u8 * ar_b2)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 kvm_s390_get_regs_rre(struct kvm_vcpu * vcpu,int * r1,int * r2)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 kvm_s390_get_base_disp_rsy(struct kvm_vcpu * vcpu,u8 * ar)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 kvm_s390_get_base_disp_rs(struct kvm_vcpu * vcpu,u8 * ar)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 */ kvm_s390_set_psw_cc(struct kvm_vcpu * vcpu,unsigned long cc)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 */ test_kvm_facility(struct kvm * kvm,unsigned long nr)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 set_kvm_facility(u64 * fac_list,unsigned long nr)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 test_kvm_cpu_feat(struct kvm * kvm,unsigned long nr)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 */ kvm_s390_user_cpu_state_ctrl(struct kvm * kvm)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 kvm_s390_set_user_cpu_state_ctrl(struct kvm * kvm)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 */ kvm_s390_get_gfn_end(struct kvm_memslots * slots)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 kvm_s390_get_gisa_desc(struct kvm * kvm)268 static inline u32 kvm_s390_get_gisa_desc(struct kvm *kvm) 269 { 270 u32 gd; 271 272 if (!kvm->arch.gisa_int.origin) 273 return 0; 274 275 gd = virt_to_phys(kvm->arch.gisa_int.origin); 276 277 if (gd && sclp.has_gisaf) 278 gd |= GISA_FORMAT1; 279 return gd; 280 } 281 282 /* implemented in pv.c */ 283 int kvm_s390_pv_destroy_cpu(struct kvm_vcpu *vcpu, u16 *rc, u16 *rrc); 284 int kvm_s390_pv_create_cpu(struct kvm_vcpu *vcpu, u16 *rc, u16 *rrc); 285 int kvm_s390_pv_set_aside(struct kvm *kvm, u16 *rc, u16 *rrc); 286 int kvm_s390_pv_deinit_aside_vm(struct kvm *kvm, u16 *rc, u16 *rrc); 287 int kvm_s390_pv_deinit_cleanup_all(struct kvm *kvm, u16 *rc, u16 *rrc); 288 int kvm_s390_pv_deinit_vm(struct kvm *kvm, u16 *rc, u16 *rrc); 289 int kvm_s390_pv_init_vm(struct kvm *kvm, u16 *rc, u16 *rrc); 290 int kvm_s390_pv_set_sec_parms(struct kvm *kvm, void *hdr, u64 length, u16 *rc, 291 u16 *rrc); 292 int kvm_s390_pv_unpack(struct kvm *kvm, unsigned long addr, unsigned long size, 293 unsigned long tweak, u16 *rc, u16 *rrc); 294 int kvm_s390_pv_set_cpu_state(struct kvm_vcpu *vcpu, u8 state); 295 int kvm_s390_pv_dump_cpu(struct kvm_vcpu *vcpu, void *buff, u16 *rc, u16 *rrc); 296 int kvm_s390_pv_dump_stor_state(struct kvm *kvm, void __user *buff_user, 297 u64 *gaddr, u64 buff_user_len, u16 *rc, u16 *rrc); 298 int kvm_s390_pv_dump_complete(struct kvm *kvm, void __user *buff_user, 299 u16 *rc, u16 *rrc); 300 kvm_s390_pv_get_handle(struct kvm * kvm)301 static inline u64 kvm_s390_pv_get_handle(struct kvm *kvm) 302 { 303 return kvm->arch.pv.handle; 304 } 305 kvm_s390_pv_cpu_get_handle(struct kvm_vcpu * vcpu)306 static inline u64 kvm_s390_pv_cpu_get_handle(struct kvm_vcpu *vcpu) 307 { 308 return vcpu->arch.pv.handle; 309 } 310 311 /* implemented in interrupt.c */ 312 int kvm_s390_handle_wait(struct kvm_vcpu *vcpu); 313 void kvm_s390_vcpu_wakeup(struct kvm_vcpu *vcpu); 314 enum hrtimer_restart kvm_s390_idle_wakeup(struct hrtimer *timer); 315 int __must_check kvm_s390_deliver_pending_interrupts(struct kvm_vcpu *vcpu); 316 void kvm_s390_clear_local_irqs(struct kvm_vcpu *vcpu); 317 void kvm_s390_clear_float_irqs(struct kvm *kvm); 318 int __must_check kvm_s390_inject_vm(struct kvm *kvm, 319 struct kvm_s390_interrupt *s390int); 320 int __must_check kvm_s390_inject_vcpu(struct kvm_vcpu *vcpu, 321 struct kvm_s390_irq *irq); kvm_s390_inject_prog_irq(struct kvm_vcpu * vcpu,struct kvm_s390_pgm_info * pgm_info)322 static inline int kvm_s390_inject_prog_irq(struct kvm_vcpu *vcpu, 323 struct kvm_s390_pgm_info *pgm_info) 324 { 325 struct kvm_s390_irq irq = { 326 .type = KVM_S390_PROGRAM_INT, 327 .u.pgm = *pgm_info, 328 }; 329 330 return kvm_s390_inject_vcpu(vcpu, &irq); 331 } kvm_s390_inject_program_int(struct kvm_vcpu * vcpu,u16 code)332 static inline int kvm_s390_inject_program_int(struct kvm_vcpu *vcpu, u16 code) 333 { 334 struct kvm_s390_irq irq = { 335 .type = KVM_S390_PROGRAM_INT, 336 .u.pgm.code = code, 337 }; 338 339 return kvm_s390_inject_vcpu(vcpu, &irq); 340 } 341 struct kvm_s390_interrupt_info *kvm_s390_get_io_int(struct kvm *kvm, 342 u64 isc_mask, u32 schid); 343 int kvm_s390_reinject_io_int(struct kvm *kvm, 344 struct kvm_s390_interrupt_info *inti); 345 int kvm_s390_mask_adapter(struct kvm *kvm, unsigned int id, bool masked); 346 347 /* implemented in intercept.c */ 348 u8 kvm_s390_get_ilen(struct kvm_vcpu *vcpu); 349 int kvm_handle_sie_intercept(struct kvm_vcpu *vcpu); kvm_s390_rewind_psw(struct kvm_vcpu * vcpu,int ilen)350 static inline void kvm_s390_rewind_psw(struct kvm_vcpu *vcpu, int ilen) 351 { 352 struct kvm_s390_sie_block *sie_block = vcpu->arch.sie_block; 353 354 sie_block->gpsw.addr = __rewind_psw(sie_block->gpsw, ilen); 355 } kvm_s390_forward_psw(struct kvm_vcpu * vcpu,int ilen)356 static inline void kvm_s390_forward_psw(struct kvm_vcpu *vcpu, int ilen) 357 { 358 kvm_s390_rewind_psw(vcpu, -ilen); 359 } kvm_s390_retry_instr(struct kvm_vcpu * vcpu)360 static inline void kvm_s390_retry_instr(struct kvm_vcpu *vcpu) 361 { 362 /* don't inject PER events if we re-execute the instruction */ 363 vcpu->arch.sie_block->icptstatus &= ~0x02; 364 kvm_s390_rewind_psw(vcpu, kvm_s390_get_ilen(vcpu)); 365 } 366 367 int handle_sthyi(struct kvm_vcpu *vcpu); 368 369 /* implemented in priv.c */ 370 int is_valid_psw(psw_t *psw); 371 int kvm_s390_handle_aa(struct kvm_vcpu *vcpu); 372 int kvm_s390_handle_b2(struct kvm_vcpu *vcpu); 373 int kvm_s390_handle_e3(struct kvm_vcpu *vcpu); 374 int kvm_s390_handle_e5(struct kvm_vcpu *vcpu); 375 int kvm_s390_handle_01(struct kvm_vcpu *vcpu); 376 int kvm_s390_handle_b9(struct kvm_vcpu *vcpu); 377 int kvm_s390_handle_lpsw(struct kvm_vcpu *vcpu); 378 int kvm_s390_handle_stctl(struct kvm_vcpu *vcpu); 379 int kvm_s390_handle_lctl(struct kvm_vcpu *vcpu); 380 int kvm_s390_handle_eb(struct kvm_vcpu *vcpu); 381 int kvm_s390_skey_check_enable(struct kvm_vcpu *vcpu); 382 383 /* implemented in vsie.c */ 384 int kvm_s390_handle_vsie(struct kvm_vcpu *vcpu); 385 void kvm_s390_vsie_kick(struct kvm_vcpu *vcpu); 386 void kvm_s390_vsie_gmap_notifier(struct gmap *gmap, unsigned long start, 387 unsigned long end); 388 void kvm_s390_vsie_init(struct kvm *kvm); 389 void kvm_s390_vsie_destroy(struct kvm *kvm); 390 391 /* implemented in sigp.c */ 392 int kvm_s390_handle_sigp(struct kvm_vcpu *vcpu); 393 int kvm_s390_handle_sigp_pei(struct kvm_vcpu *vcpu); 394 395 /* implemented in kvm-s390.c */ 396 int kvm_s390_try_set_tod_clock(struct kvm *kvm, const struct kvm_s390_vm_tod_clock *gtod); 397 long kvm_arch_fault_in_page(struct kvm_vcpu *vcpu, gpa_t gpa, int writable); 398 int kvm_s390_store_status_unloaded(struct kvm_vcpu *vcpu, unsigned long addr); 399 int kvm_s390_vcpu_store_status(struct kvm_vcpu *vcpu, unsigned long addr); 400 int kvm_s390_vcpu_start(struct kvm_vcpu *vcpu); 401 int kvm_s390_vcpu_stop(struct kvm_vcpu *vcpu); 402 void kvm_s390_vcpu_block(struct kvm_vcpu *vcpu); 403 void kvm_s390_vcpu_unblock(struct kvm_vcpu *vcpu); 404 bool kvm_s390_vcpu_sie_inhibited(struct kvm_vcpu *vcpu); 405 void exit_sie(struct kvm_vcpu *vcpu); 406 void kvm_s390_sync_request(int req, struct kvm_vcpu *vcpu); 407 int kvm_s390_vcpu_setup_cmma(struct kvm_vcpu *vcpu); 408 void kvm_s390_vcpu_unsetup_cmma(struct kvm_vcpu *vcpu); 409 void kvm_s390_set_cpu_timer(struct kvm_vcpu *vcpu, __u64 cputm); 410 __u64 kvm_s390_get_cpu_timer(struct kvm_vcpu *vcpu); 411 int kvm_s390_cpus_from_pv(struct kvm *kvm, u16 *rc, u16 *rrc); 412 413 /* implemented in diag.c */ 414 int kvm_s390_handle_diag(struct kvm_vcpu *vcpu); 415 kvm_s390_vcpu_block_all(struct kvm * kvm)416 static inline void kvm_s390_vcpu_block_all(struct kvm *kvm) 417 { 418 unsigned long i; 419 struct kvm_vcpu *vcpu; 420 421 WARN_ON(!mutex_is_locked(&kvm->lock)); 422 kvm_for_each_vcpu(i, vcpu, kvm) 423 kvm_s390_vcpu_block(vcpu); 424 } 425 kvm_s390_vcpu_unblock_all(struct kvm * kvm)426 static inline void kvm_s390_vcpu_unblock_all(struct kvm *kvm) 427 { 428 unsigned long i; 429 struct kvm_vcpu *vcpu; 430 431 kvm_for_each_vcpu(i, vcpu, kvm) 432 kvm_s390_vcpu_unblock(vcpu); 433 } 434 kvm_s390_get_tod_clock_fast(struct kvm * kvm)435 static inline u64 kvm_s390_get_tod_clock_fast(struct kvm *kvm) 436 { 437 u64 rc; 438 439 preempt_disable(); 440 rc = get_tod_clock_fast() + kvm->arch.epoch; 441 preempt_enable(); 442 return rc; 443 } 444 445 /** 446 * kvm_s390_inject_prog_cond - conditionally inject a program check 447 * @vcpu: virtual cpu 448 * @rc: original return/error code 449 * 450 * This function is supposed to be used after regular guest access functions 451 * failed, to conditionally inject a program check to a vcpu. The typical 452 * pattern would look like 453 * 454 * rc = write_guest(vcpu, addr, data, len); 455 * if (rc) 456 * return kvm_s390_inject_prog_cond(vcpu, rc); 457 * 458 * A negative return code from guest access functions implies an internal error 459 * like e.g. out of memory. In these cases no program check should be injected 460 * to the guest. 461 * A positive value implies that an exception happened while accessing a guest's 462 * memory. In this case all data belonging to the corresponding program check 463 * has been stored in vcpu->arch.pgm and can be injected with 464 * kvm_s390_inject_prog_irq(). 465 * 466 * Returns: - the original @rc value if @rc was negative (internal error) 467 * - zero if @rc was already zero 468 * - zero or error code from injecting if @rc was positive 469 * (program check injected to @vcpu) 470 */ kvm_s390_inject_prog_cond(struct kvm_vcpu * vcpu,int rc)471 static inline int kvm_s390_inject_prog_cond(struct kvm_vcpu *vcpu, int rc) 472 { 473 if (rc <= 0) 474 return rc; 475 return kvm_s390_inject_prog_irq(vcpu, &vcpu->arch.pgm); 476 } 477 478 int s390int_to_s390irq(struct kvm_s390_interrupt *s390int, 479 struct kvm_s390_irq *s390irq); 480 481 /* implemented in interrupt.c */ 482 int kvm_s390_vcpu_has_irq(struct kvm_vcpu *vcpu, int exclude_stop); 483 int psw_extint_disabled(struct kvm_vcpu *vcpu); 484 void kvm_s390_destroy_adapters(struct kvm *kvm); 485 int kvm_s390_ext_call_pending(struct kvm_vcpu *vcpu); 486 extern struct kvm_device_ops kvm_flic_ops; 487 int kvm_s390_is_stop_irq_pending(struct kvm_vcpu *vcpu); 488 int kvm_s390_is_restart_irq_pending(struct kvm_vcpu *vcpu); 489 void kvm_s390_clear_stop_irq(struct kvm_vcpu *vcpu); 490 int kvm_s390_set_irq_state(struct kvm_vcpu *vcpu, 491 void __user *buf, int len); 492 int kvm_s390_get_irq_state(struct kvm_vcpu *vcpu, 493 __u8 __user *buf, int len); 494 void kvm_s390_gisa_init(struct kvm *kvm); 495 void kvm_s390_gisa_clear(struct kvm *kvm); 496 void kvm_s390_gisa_destroy(struct kvm *kvm); 497 void kvm_s390_gisa_disable(struct kvm *kvm); 498 void kvm_s390_gisa_enable(struct kvm *kvm); 499 int __init kvm_s390_gib_init(u8 nisc); 500 void kvm_s390_gib_destroy(void); 501 502 /* implemented in guestdbg.c */ 503 void kvm_s390_backup_guest_per_regs(struct kvm_vcpu *vcpu); 504 void kvm_s390_restore_guest_per_regs(struct kvm_vcpu *vcpu); 505 void kvm_s390_patch_guest_per_regs(struct kvm_vcpu *vcpu); 506 int kvm_s390_import_bp_data(struct kvm_vcpu *vcpu, 507 struct kvm_guest_debug *dbg); 508 void kvm_s390_clear_bp_data(struct kvm_vcpu *vcpu); 509 void kvm_s390_prepare_debug_exit(struct kvm_vcpu *vcpu); 510 int kvm_s390_handle_per_ifetch_icpt(struct kvm_vcpu *vcpu); 511 int kvm_s390_handle_per_event(struct kvm_vcpu *vcpu); 512 513 /* support for Basic/Extended SCA handling */ kvm_s390_get_ipte_control(struct kvm * kvm)514 static inline union ipte_control *kvm_s390_get_ipte_control(struct kvm *kvm) 515 { 516 struct bsca_block *sca = kvm->arch.sca; /* SCA version doesn't matter */ 517 518 return &sca->ipte_control; 519 } kvm_s390_use_sca_entries(void)520 static inline int kvm_s390_use_sca_entries(void) 521 { 522 /* 523 * Without SIGP interpretation, only SRS interpretation (if available) 524 * might use the entries. By not setting the entries and keeping them 525 * invalid, hardware will not access them but intercept. 526 */ 527 return sclp.has_sigpif; 528 } 529 void kvm_s390_reinject_machine_check(struct kvm_vcpu *vcpu, 530 struct mcck_volatile_info *mcck_info); 531 532 /** 533 * kvm_s390_vcpu_crypto_reset_all 534 * 535 * Reset the crypto attributes for each vcpu. This can be done while the vcpus 536 * are running as each vcpu will be removed from SIE before resetting the crypt 537 * attributes and restored to SIE afterward. 538 * 539 * Note: The kvm->lock must be held while calling this function 540 * 541 * @kvm: the KVM guest 542 */ 543 void kvm_s390_vcpu_crypto_reset_all(struct kvm *kvm); 544 545 /** 546 * kvm_s390_vcpu_pci_enable_interp 547 * 548 * Set the associated PCI attributes for each vcpu to allow for zPCI Load/Store 549 * interpretation as well as adapter interruption forwarding. 550 * 551 * @kvm: the KVM guest 552 */ 553 void kvm_s390_vcpu_pci_enable_interp(struct kvm *kvm); 554 555 /** 556 * diag9c_forwarding_hz 557 * 558 * Set the maximum number of diag9c forwarding per second 559 */ 560 extern unsigned int diag9c_forwarding_hz; 561 562 #endif 563