s390/kvm/kvm-s390.h

0001 /* SPDX-License-Identifier: GPL-2.0 */
0002 /*
0003  * definition for kvm on s390
0004  *
0005  * Copyright IBM Corp. 2008, 2020
0006  *
0007  *    Author(s): Carsten Otte <cotte@de.ibm.com>
0008  *               Christian Borntraeger <borntraeger@de.ibm.com>
0009  *               Christian Ehrhardt <ehrhardt@de.ibm.com>
0010  */
0011
0012 #ifndef ARCH_S390_KVM_S390_H
0013 #define ARCH_S390_KVM_S390_H
0014
0015 #include <linux/hrtimer.h>
0016 #include <linux/kvm.h>
0017 #include <linux/kvm_host.h>
0018 #include <linux/lockdep.h>
0019 #include <asm/facility.h>
0020 #include <asm/processor.h>
0021 #include <asm/sclp.h>
0022
0023 /* Transactional Memory Execution related macros */
0024 #define IS_TE_ENABLED(vcpu) ((vcpu->arch.sie_block->ecb & ECB_TE))
0025 #define TDB_FORMAT1     1
0026 #define IS_ITDB_VALID(vcpu) ((*(char *)vcpu->arch.sie_block->itdba == TDB_FORMAT1))
0027
0028 extern debug_info_t *kvm_s390_dbf;
0029 extern debug_info_t *kvm_s390_dbf_uv;
0030
0031 #define KVM_UV_EVENT(d_kvm, d_loglevel, d_string, d_args...)\
0032 do { \
0033     debug_sprintf_event((d_kvm)->arch.dbf, d_loglevel, d_string "\n", \
0034       d_args); \
0035     debug_sprintf_event(kvm_s390_dbf_uv, d_loglevel, \
0036                 "%d: " d_string "\n", (d_kvm)->userspace_pid, \
0037                 d_args); \
0038 } while (0)
0039
0040 #define KVM_EVENT(d_loglevel, d_string, d_args...)\
0041 do { \
0042     debug_sprintf_event(kvm_s390_dbf, d_loglevel, d_string "\n", \
0043       d_args); \
0044 } while (0)
0045
0046 #define VM_EVENT(d_kvm, d_loglevel, d_string, d_args...)\
0047 do { \
0048     debug_sprintf_event(d_kvm->arch.dbf, d_loglevel, d_string "\n", \
0049       d_args); \
0050 } while (0)
0051
0052 #define VCPU_EVENT(d_vcpu, d_loglevel, d_string, d_args...)\
0053 do { \
0054     debug_sprintf_event(d_vcpu->kvm->arch.dbf, d_loglevel, \
0055       "%02d[%016lx-%016lx]: " d_string "\n", d_vcpu->vcpu_id, \
0056       d_vcpu->arch.sie_block->gpsw.mask, d_vcpu->arch.sie_block->gpsw.addr,\
0057       d_args); \
0058 } while (0)
0059
0060 static inline void kvm_s390_set_cpuflags(struct kvm_vcpu *vcpu, u32 flags)
0061 {
0062     atomic_or(flags, &vcpu->arch.sie_block->cpuflags);
0063 }
0064
0065 static inline void kvm_s390_clear_cpuflags(struct kvm_vcpu *vcpu, u32 flags)
0066 {
0067     atomic_andnot(flags, &vcpu->arch.sie_block->cpuflags);
0068 }
0069
0070 static inline bool kvm_s390_test_cpuflags(struct kvm_vcpu *vcpu, u32 flags)
0071 {
0072     return (atomic_read(&vcpu->arch.sie_block->cpuflags) & flags) == flags;
0073 }
0074
0075 static inline int is_vcpu_stopped(struct kvm_vcpu *vcpu)
0076 {
0077     return kvm_s390_test_cpuflags(vcpu, CPUSTAT_STOPPED);
0078 }
0079
0080 static inline int is_vcpu_idle(struct kvm_vcpu *vcpu)
0081 {
0082     return test_bit(vcpu->vcpu_idx, vcpu->kvm->arch.idle_mask);
0083 }
0084
0085 static inline int kvm_is_ucontrol(struct kvm *kvm)
0086 {
0087 #ifdef CONFIG_KVM_S390_UCONTROL
0088     if (kvm->arch.gmap)
0089         return 0;
0090     return 1;
0091 #else
0092     return 0;
0093 #endif
0094 }
0095
0096 #define GUEST_PREFIX_SHIFT 13
0097 static inline u32 kvm_s390_get_prefix(struct kvm_vcpu *vcpu)
0098 {
0099     return vcpu->arch.sie_block->prefix << GUEST_PREFIX_SHIFT;
0100 }
0101
0102 static inline void kvm_s390_set_prefix(struct kvm_vcpu *vcpu, u32 prefix)
0103 {
0104     VCPU_EVENT(vcpu, 3, "set prefix of cpu %03u to 0x%x", vcpu->vcpu_id,
0105            prefix);
0106     vcpu->arch.sie_block->prefix = prefix >> GUEST_PREFIX_SHIFT;
0107     kvm_make_request(KVM_REQ_TLB_FLUSH, vcpu);
0108     kvm_make_request(KVM_REQ_REFRESH_GUEST_PREFIX, vcpu);
0109 }
0110
0111 static inline u64 kvm_s390_get_base_disp_s(struct kvm_vcpu *vcpu, u8 *ar)
0112 {
0113     u32 base2 = vcpu->arch.sie_block->ipb >> 28;
0114     u32 disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16);
0115
0116     if (ar)
0117         *ar = base2;
0118
0119     return (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2;
0120 }
0121
0122 static inline void kvm_s390_get_base_disp_sse(struct kvm_vcpu *vcpu,
0123                           u64 *address1, u64 *address2,
0124                           u8 *ar_b1, u8 *ar_b2)
0125 {
0126     u32 base1 = (vcpu->arch.sie_block->ipb & 0xf0000000) >> 28;
0127     u32 disp1 = (vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16;
0128     u32 base2 = (vcpu->arch.sie_block->ipb & 0xf000) >> 12;
0129     u32 disp2 = vcpu->arch.sie_block->ipb & 0x0fff;
0130
0131     *address1 = (base1 ? vcpu->run->s.regs.gprs[base1] : 0) + disp1;
0132     *address2 = (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2;
0133
0134     if (ar_b1)
0135         *ar_b1 = base1;
0136     if (ar_b2)
0137         *ar_b2 = base2;
0138 }
0139
0140 static inline void kvm_s390_get_regs_rre(struct kvm_vcpu *vcpu, int *r1, int *r2)
0141 {
0142     if (r1)
0143         *r1 = (vcpu->arch.sie_block->ipb & 0x00f00000) >> 20;
0144     if (r2)
0145         *r2 = (vcpu->arch.sie_block->ipb & 0x000f0000) >> 16;
0146 }
0147
0148 static inline u64 kvm_s390_get_base_disp_rsy(struct kvm_vcpu *vcpu, u8 *ar)
0149 {
0150     u32 base2 = vcpu->arch.sie_block->ipb >> 28;
0151     u32 disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16) +
0152             ((vcpu->arch.sie_block->ipb & 0xff00) << 4);
0153     /* The displacement is a 20bit _SIGNED_ value */
0154     if (disp2 & 0x80000)
0155         disp2+=0xfff00000;
0156
0157     if (ar)
0158         *ar = base2;
0159
0160     return (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + (long)(int)disp2;
0161 }
0162
0163 static inline u64 kvm_s390_get_base_disp_rs(struct kvm_vcpu *vcpu, u8 *ar)
0164 {
0165     u32 base2 = vcpu->arch.sie_block->ipb >> 28;
0166     u32 disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16);
0167
0168     if (ar)
0169         *ar = base2;
0170
0171     return (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2;
0172 }
0173
0174 /* Set the condition code in the guest program status word */
0175 static inline void kvm_s390_set_psw_cc(struct kvm_vcpu *vcpu, unsigned long cc)
0176 {
0177     vcpu->arch.sie_block->gpsw.mask &= ~(3UL << 44);
0178     vcpu->arch.sie_block->gpsw.mask |= cc << 44;
0179 }
0180
0181 /* test availability of facility in a kvm instance */
0182 static inline int test_kvm_facility(struct kvm *kvm, unsigned long nr)
0183 {
0184     return __test_facility(nr, kvm->arch.model.fac_mask) &&
0185         __test_facility(nr, kvm->arch.model.fac_list);
0186 }
0187
0188 static inline int set_kvm_facility(u64 *fac_list, unsigned long nr)
0189 {
0190     unsigned char *ptr;
0191
0192     if (nr >= MAX_FACILITY_BIT)
0193         return -EINVAL;
0194     ptr = (unsigned char *) fac_list + (nr >> 3);
0195     *ptr |= (0x80UL >> (nr & 7));
0196     return 0;
0197 }
0198
0199 static inline int test_kvm_cpu_feat(struct kvm *kvm, unsigned long nr)
0200 {
0201     WARN_ON_ONCE(nr >= KVM_S390_VM_CPU_FEAT_NR_BITS);
0202     return test_bit_inv(nr, kvm->arch.cpu_feat);
0203 }
0204
0205 /* are cpu states controlled by user space */
0206 static inline int kvm_s390_user_cpu_state_ctrl(struct kvm *kvm)
0207 {
0208     return kvm->arch.user_cpu_state_ctrl != 0;
0209 }
0210
0211 static inline void kvm_s390_set_user_cpu_state_ctrl(struct kvm *kvm)
0212 {
0213     if (kvm->arch.user_cpu_state_ctrl)
0214         return;
0215
0216     VM_EVENT(kvm, 3, "%s", "ENABLE: Userspace CPU state control");
0217     kvm->arch.user_cpu_state_ctrl = 1;
0218 }
0219
0220 /* get the end gfn of the last (highest gfn) memslot */
0221 static inline unsigned long kvm_s390_get_gfn_end(struct kvm_memslots *slots)
0222 {
0223     struct rb_node *node;
0224     struct kvm_memory_slot *ms;
0225
0226     if (WARN_ON(kvm_memslots_empty(slots)))
0227         return 0;
0228
0229     node = rb_last(&slots->gfn_tree);
0230     ms = container_of(node, struct kvm_memory_slot, gfn_node[slots->node_idx]);
0231     return ms->base_gfn + ms->npages;
0232 }
0233
0234 static inline u32 kvm_s390_get_gisa_desc(struct kvm *kvm)
0235 {
0236     u32 gd = (u32)(u64)kvm->arch.gisa_int.origin;
0237
0238     if (gd && sclp.has_gisaf)
0239         gd |= GISA_FORMAT1;
0240     return gd;
0241 }
0242
0243 /* implemented in pv.c */
0244 int kvm_s390_pv_destroy_cpu(struct kvm_vcpu *vcpu, u16 *rc, u16 *rrc);
0245 int kvm_s390_pv_create_cpu(struct kvm_vcpu *vcpu, u16 *rc, u16 *rrc);
0246 int kvm_s390_pv_deinit_vm(struct kvm *kvm, u16 *rc, u16 *rrc);
0247 int kvm_s390_pv_init_vm(struct kvm *kvm, u16 *rc, u16 *rrc);
0248 int kvm_s390_pv_set_sec_parms(struct kvm *kvm, void *hdr, u64 length, u16 *rc,
0249                   u16 *rrc);
0250 int kvm_s390_pv_unpack(struct kvm *kvm, unsigned long addr, unsigned long size,
0251                unsigned long tweak, u16 *rc, u16 *rrc);
0252 int kvm_s390_pv_set_cpu_state(struct kvm_vcpu *vcpu, u8 state);
0253 int kvm_s390_pv_dump_cpu(struct kvm_vcpu *vcpu, void *buff, u16 *rc, u16 *rrc);
0254 int kvm_s390_pv_dump_stor_state(struct kvm *kvm, void __user *buff_user,
0255                 u64 *gaddr, u64 buff_user_len, u16 *rc, u16 *rrc);
0256 int kvm_s390_pv_dump_complete(struct kvm *kvm, void __user *buff_user,
0257                   u16 *rc, u16 *rrc);
0258
0259 static inline u64 kvm_s390_pv_get_handle(struct kvm *kvm)
0260 {
0261     return kvm->arch.pv.handle;
0262 }
0263
0264 static inline u64 kvm_s390_pv_cpu_get_handle(struct kvm_vcpu *vcpu)
0265 {
0266     return vcpu->arch.pv.handle;
0267 }
0268
0269 static inline bool kvm_s390_pv_is_protected(struct kvm *kvm)
0270 {
0271     lockdep_assert_held(&kvm->lock);
0272     return !!kvm_s390_pv_get_handle(kvm);
0273 }
0274
0275 static inline bool kvm_s390_pv_cpu_is_protected(struct kvm_vcpu *vcpu)
0276 {
0277     lockdep_assert_held(&vcpu->mutex);
0278     return !!kvm_s390_pv_cpu_get_handle(vcpu);
0279 }
0280
0281 /* implemented in interrupt.c */
0282 int kvm_s390_handle_wait(struct kvm_vcpu *vcpu);
0283 void kvm_s390_vcpu_wakeup(struct kvm_vcpu *vcpu);
0284 enum hrtimer_restart kvm_s390_idle_wakeup(struct hrtimer *timer);
0285 int __must_check kvm_s390_deliver_pending_interrupts(struct kvm_vcpu *vcpu);
0286 void kvm_s390_clear_local_irqs(struct kvm_vcpu *vcpu);
0287 void kvm_s390_clear_float_irqs(struct kvm *kvm);
0288 int __must_check kvm_s390_inject_vm(struct kvm *kvm,
0289                     struct kvm_s390_interrupt *s390int);
0290 int __must_check kvm_s390_inject_vcpu(struct kvm_vcpu *vcpu,
0291                       struct kvm_s390_irq *irq);
0292 static inline int kvm_s390_inject_prog_irq(struct kvm_vcpu *vcpu,
0293                        struct kvm_s390_pgm_info *pgm_info)
0294 {
0295     struct kvm_s390_irq irq = {
0296         .type = KVM_S390_PROGRAM_INT,
0297         .u.pgm = *pgm_info,
0298     };
0299
0300     return kvm_s390_inject_vcpu(vcpu, &irq);
0301 }
0302 static inline int kvm_s390_inject_program_int(struct kvm_vcpu *vcpu, u16 code)
0303 {
0304     struct kvm_s390_irq irq = {
0305         .type = KVM_S390_PROGRAM_INT,
0306         .u.pgm.code = code,
0307     };
0308
0309     return kvm_s390_inject_vcpu(vcpu, &irq);
0310 }
0311 struct kvm_s390_interrupt_info *kvm_s390_get_io_int(struct kvm *kvm,
0312                             u64 isc_mask, u32 schid);
0313 int kvm_s390_reinject_io_int(struct kvm *kvm,
0314                  struct kvm_s390_interrupt_info *inti);
0315 int kvm_s390_mask_adapter(struct kvm *kvm, unsigned int id, bool masked);
0316
0317 /* implemented in intercept.c */
0318 u8 kvm_s390_get_ilen(struct kvm_vcpu *vcpu);
0319 int kvm_handle_sie_intercept(struct kvm_vcpu *vcpu);
0320 static inline void kvm_s390_rewind_psw(struct kvm_vcpu *vcpu, int ilen)
0321 {
0322     struct kvm_s390_sie_block *sie_block = vcpu->arch.sie_block;
0323
0324     sie_block->gpsw.addr = __rewind_psw(sie_block->gpsw, ilen);
0325 }
0326 static inline void kvm_s390_forward_psw(struct kvm_vcpu *vcpu, int ilen)
0327 {
0328     kvm_s390_rewind_psw(vcpu, -ilen);
0329 }
0330 static inline void kvm_s390_retry_instr(struct kvm_vcpu *vcpu)
0331 {
0332     /* don't inject PER events if we re-execute the instruction */
0333     vcpu->arch.sie_block->icptstatus &= ~0x02;
0334     kvm_s390_rewind_psw(vcpu, kvm_s390_get_ilen(vcpu));
0335 }
0336
0337 int handle_sthyi(struct kvm_vcpu *vcpu);
0338
0339 /* implemented in priv.c */
0340 int is_valid_psw(psw_t *psw);
0341 int kvm_s390_handle_aa(struct kvm_vcpu *vcpu);
0342 int kvm_s390_handle_b2(struct kvm_vcpu *vcpu);
0343 int kvm_s390_handle_e3(struct kvm_vcpu *vcpu);
0344 int kvm_s390_handle_e5(struct kvm_vcpu *vcpu);
0345 int kvm_s390_handle_01(struct kvm_vcpu *vcpu);
0346 int kvm_s390_handle_b9(struct kvm_vcpu *vcpu);
0347 int kvm_s390_handle_lpsw(struct kvm_vcpu *vcpu);
0348 int kvm_s390_handle_stctl(struct kvm_vcpu *vcpu);
0349 int kvm_s390_handle_lctl(struct kvm_vcpu *vcpu);
0350 int kvm_s390_handle_eb(struct kvm_vcpu *vcpu);
0351 int kvm_s390_skey_check_enable(struct kvm_vcpu *vcpu);
0352
0353 /* implemented in vsie.c */
0354 int kvm_s390_handle_vsie(struct kvm_vcpu *vcpu);
0355 void kvm_s390_vsie_kick(struct kvm_vcpu *vcpu);
0356 void kvm_s390_vsie_gmap_notifier(struct gmap *gmap, unsigned long start,
0357                  unsigned long end);
0358 void kvm_s390_vsie_init(struct kvm *kvm);
0359 void kvm_s390_vsie_destroy(struct kvm *kvm);
0360
0361 /* implemented in sigp.c */
0362 int kvm_s390_handle_sigp(struct kvm_vcpu *vcpu);
0363 int kvm_s390_handle_sigp_pei(struct kvm_vcpu *vcpu);
0364
0365 /* implemented in kvm-s390.c */
0366 void kvm_s390_set_tod_clock(struct kvm *kvm, const struct kvm_s390_vm_tod_clock *gtod);
0367 int kvm_s390_try_set_tod_clock(struct kvm *kvm, const struct kvm_s390_vm_tod_clock *gtod);
0368 long kvm_arch_fault_in_page(struct kvm_vcpu *vcpu, gpa_t gpa, int writable);
0369 int kvm_s390_store_status_unloaded(struct kvm_vcpu *vcpu, unsigned long addr);
0370 int kvm_s390_vcpu_store_status(struct kvm_vcpu *vcpu, unsigned long addr);
0371 int kvm_s390_vcpu_start(struct kvm_vcpu *vcpu);
0372 int kvm_s390_vcpu_stop(struct kvm_vcpu *vcpu);
0373 void kvm_s390_vcpu_block(struct kvm_vcpu *vcpu);
0374 void kvm_s390_vcpu_unblock(struct kvm_vcpu *vcpu);
0375 bool kvm_s390_vcpu_sie_inhibited(struct kvm_vcpu *vcpu);
0376 void exit_sie(struct kvm_vcpu *vcpu);
0377 void kvm_s390_sync_request(int req, struct kvm_vcpu *vcpu);
0378 int kvm_s390_vcpu_setup_cmma(struct kvm_vcpu *vcpu);
0379 void kvm_s390_vcpu_unsetup_cmma(struct kvm_vcpu *vcpu);
0380 void kvm_s390_set_cpu_timer(struct kvm_vcpu *vcpu, __u64 cputm);
0381 __u64 kvm_s390_get_cpu_timer(struct kvm_vcpu *vcpu);
0382 int kvm_s390_cpus_from_pv(struct kvm *kvm, u16 *rc, u16 *rrc);
0383
0384 /* implemented in diag.c */
0385 int kvm_s390_handle_diag(struct kvm_vcpu *vcpu);
0386
0387 static inline void kvm_s390_vcpu_block_all(struct kvm *kvm)
0388 {
0389     unsigned long i;
0390     struct kvm_vcpu *vcpu;
0391
0392     WARN_ON(!mutex_is_locked(&kvm->lock));
0393     kvm_for_each_vcpu(i, vcpu, kvm)
0394         kvm_s390_vcpu_block(vcpu);
0395 }
0396
0397 static inline void kvm_s390_vcpu_unblock_all(struct kvm *kvm)
0398 {
0399     unsigned long i;
0400     struct kvm_vcpu *vcpu;
0401
0402     kvm_for_each_vcpu(i, vcpu, kvm)
0403         kvm_s390_vcpu_unblock(vcpu);
0404 }
0405
0406 static inline u64 kvm_s390_get_tod_clock_fast(struct kvm *kvm)
0407 {
0408     u64 rc;
0409
0410     preempt_disable();
0411     rc = get_tod_clock_fast() + kvm->arch.epoch;
0412     preempt_enable();
0413     return rc;
0414 }
0415
0416 /**
0417  * kvm_s390_inject_prog_cond - conditionally inject a program check
0418  * @vcpu: virtual cpu
0419  * @rc: original return/error code
0420  *
0421  * This function is supposed to be used after regular guest access functions
0422  * failed, to conditionally inject a program check to a vcpu. The typical
0423  * pattern would look like
0424  *
0425  * rc = write_guest(vcpu, addr, data, len);
0426  * if (rc)
0427  *  return kvm_s390_inject_prog_cond(vcpu, rc);
0428  *
0429  * A negative return code from guest access functions implies an internal error
0430  * like e.g. out of memory. In these cases no program check should be injected
0431  * to the guest.
0432  * A positive value implies that an exception happened while accessing a guest's
0433  * memory. In this case all data belonging to the corresponding program check
0434  * has been stored in vcpu->arch.pgm and can be injected with
0435  * kvm_s390_inject_prog_irq().
0436  *
0437  * Returns: - the original @rc value if @rc was negative (internal error)
0438  *      - zero if @rc was already zero
0439  *      - zero or error code from injecting if @rc was positive
0440  *        (program check injected to @vcpu)
0441  */
0442 static inline int kvm_s390_inject_prog_cond(struct kvm_vcpu *vcpu, int rc)
0443 {
0444     if (rc <= 0)
0445         return rc;
0446     return kvm_s390_inject_prog_irq(vcpu, &vcpu->arch.pgm);
0447 }
0448
0449 int s390int_to_s390irq(struct kvm_s390_interrupt *s390int,
0450             struct kvm_s390_irq *s390irq);
0451
0452 /* implemented in interrupt.c */
0453 int kvm_s390_vcpu_has_irq(struct kvm_vcpu *vcpu, int exclude_stop);
0454 int psw_extint_disabled(struct kvm_vcpu *vcpu);
0455 void kvm_s390_destroy_adapters(struct kvm *kvm);
0456 int kvm_s390_ext_call_pending(struct kvm_vcpu *vcpu);
0457 extern struct kvm_device_ops kvm_flic_ops;
0458 int kvm_s390_is_stop_irq_pending(struct kvm_vcpu *vcpu);
0459 int kvm_s390_is_restart_irq_pending(struct kvm_vcpu *vcpu);
0460 void kvm_s390_clear_stop_irq(struct kvm_vcpu *vcpu);
0461 int kvm_s390_set_irq_state(struct kvm_vcpu *vcpu,
0462                void __user *buf, int len);
0463 int kvm_s390_get_irq_state(struct kvm_vcpu *vcpu,
0464                __u8 __user *buf, int len);
0465 void kvm_s390_gisa_init(struct kvm *kvm);
0466 void kvm_s390_gisa_clear(struct kvm *kvm);
0467 void kvm_s390_gisa_destroy(struct kvm *kvm);
0468 void kvm_s390_gisa_disable(struct kvm *kvm);
0469 void kvm_s390_gisa_enable(struct kvm *kvm);
0470 int kvm_s390_gib_init(u8 nisc);
0471 void kvm_s390_gib_destroy(void);
0472
0473 /* implemented in guestdbg.c */
0474 void kvm_s390_backup_guest_per_regs(struct kvm_vcpu *vcpu);
0475 void kvm_s390_restore_guest_per_regs(struct kvm_vcpu *vcpu);
0476 void kvm_s390_patch_guest_per_regs(struct kvm_vcpu *vcpu);
0477 int kvm_s390_import_bp_data(struct kvm_vcpu *vcpu,
0478                 struct kvm_guest_debug *dbg);
0479 void kvm_s390_clear_bp_data(struct kvm_vcpu *vcpu);
0480 void kvm_s390_prepare_debug_exit(struct kvm_vcpu *vcpu);
0481 int kvm_s390_handle_per_ifetch_icpt(struct kvm_vcpu *vcpu);
0482 int kvm_s390_handle_per_event(struct kvm_vcpu *vcpu);
0483
0484 /* support for Basic/Extended SCA handling */
0485 static inline union ipte_control *kvm_s390_get_ipte_control(struct kvm *kvm)
0486 {
0487     struct bsca_block *sca = kvm->arch.sca; /* SCA version doesn't matter */
0488
0489     return &sca->ipte_control;
0490 }
0491 static inline int kvm_s390_use_sca_entries(void)
0492 {
0493     /*
0494      * Without SIGP interpretation, only SRS interpretation (if available)
0495      * might use the entries. By not setting the entries and keeping them
0496      * invalid, hardware will not access them but intercept.
0497      */
0498     return sclp.has_sigpif;
0499 }
0500 void kvm_s390_reinject_machine_check(struct kvm_vcpu *vcpu,
0501                      struct mcck_volatile_info *mcck_info);
0502
0503 /**
0504  * kvm_s390_vcpu_crypto_reset_all
0505  *
0506  * Reset the crypto attributes for each vcpu. This can be done while the vcpus
0507  * are running as each vcpu will be removed from SIE before resetting the crypt
0508  * attributes and restored to SIE afterward.
0509  *
0510  * Note: The kvm->lock must be held while calling this function
0511  *
0512  * @kvm: the KVM guest
0513  */
0514 void kvm_s390_vcpu_crypto_reset_all(struct kvm *kvm);
0515
0516 /**
0517  * kvm_s390_vcpu_pci_enable_interp
0518  *
0519  * Set the associated PCI attributes for each vcpu to allow for zPCI Load/Store
0520  * interpretation as well as adapter interruption forwarding.
0521  *
0522  * @kvm: the KVM guest
0523  */
0524 void kvm_s390_vcpu_pci_enable_interp(struct kvm *kvm);
0525
0526 /**
0527  * diag9c_forwarding_hz
0528  *
0529  * Set the maximum number of diag9c forwarding per second
0530  */
0531 extern unsigned int diag9c_forwarding_hz;
0532
0533 #endif