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