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