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d809aa23 | 1 | // SPDX-License-Identifier: GPL-2.0 |
8f2abe6a | 2 | /* |
a53c8fab | 3 | * in-kernel handling for sie intercepts |
8f2abe6a | 4 | * |
9a558ee3 | 5 | * Copyright IBM Corp. 2008, 2014 |
8f2abe6a | 6 | * |
8f2abe6a CB |
7 | * Author(s): Carsten Otte <cotte@de.ibm.com> |
8 | * Christian Borntraeger <borntraeger@de.ibm.com> | |
9 | */ | |
10 | ||
11 | #include <linux/kvm_host.h> | |
12 | #include <linux/errno.h> | |
13 | #include <linux/pagemap.h> | |
14 | ||
15 | #include <asm/kvm_host.h> | |
a86dcc24 | 16 | #include <asm/asm-offsets.h> |
f14d82e0 | 17 | #include <asm/irq.h> |
b7c92f1a | 18 | #include <asm/sysinfo.h> |
8f2abe6a CB |
19 | |
20 | #include "kvm-s390.h" | |
ba5c1e9b | 21 | #include "gaccess.h" |
5786fffa | 22 | #include "trace.h" |
ade38c31 | 23 | #include "trace-s390.h" |
ba5c1e9b | 24 | |
f379aae5 | 25 | |
77975357 | 26 | static const intercept_handler_t instruction_handlers[256] = { |
8c3f61e2 | 27 | [0x01] = kvm_s390_handle_01, |
48a3e950 | 28 | [0x82] = kvm_s390_handle_lpsw, |
e28acfea | 29 | [0x83] = kvm_s390_handle_diag, |
80cd8763 | 30 | [0xaa] = kvm_s390_handle_aa, |
5288fbf0 | 31 | [0xae] = kvm_s390_handle_sigp, |
70455a36 | 32 | [0xb2] = kvm_s390_handle_b2, |
aba07508 | 33 | [0xb6] = kvm_s390_handle_stctl, |
953ed88d | 34 | [0xb7] = kvm_s390_handle_lctl, |
48a3e950 | 35 | [0xb9] = kvm_s390_handle_b9, |
4e0b1ab7 | 36 | [0xe3] = kvm_s390_handle_e3, |
bb25b9ba | 37 | [0xe5] = kvm_s390_handle_e5, |
953ed88d | 38 | [0xeb] = kvm_s390_handle_eb, |
ba5c1e9b | 39 | }; |
8f2abe6a | 40 | |
0e8bc06a | 41 | u8 kvm_s390_get_ilen(struct kvm_vcpu *vcpu) |
04b41acd TH |
42 | { |
43 | struct kvm_s390_sie_block *sie_block = vcpu->arch.sie_block; | |
0e8bc06a | 44 | u8 ilen = 0; |
04b41acd | 45 | |
0e8bc06a DH |
46 | switch (vcpu->arch.sie_block->icptcode) { |
47 | case ICPT_INST: | |
48 | case ICPT_INSTPROGI: | |
49 | case ICPT_OPEREXC: | |
50 | case ICPT_PARTEXEC: | |
51 | case ICPT_IOINST: | |
52 | /* instruction only stored for these icptcodes */ | |
53 | ilen = insn_length(vcpu->arch.sie_block->ipa >> 8); | |
54 | /* Use the length of the EXECUTE instruction if necessary */ | |
55 | if (sie_block->icptstatus & 1) { | |
56 | ilen = (sie_block->icptstatus >> 4) & 0x6; | |
57 | if (!ilen) | |
58 | ilen = 4; | |
59 | } | |
60 | break; | |
61 | case ICPT_PROGI: | |
62 | /* bit 1+2 of pgmilc are the ilc, so we directly get ilen */ | |
63 | ilen = vcpu->arch.sie_block->pgmilc & 0x6; | |
64 | break; | |
04b41acd | 65 | } |
0e8bc06a | 66 | return ilen; |
04b41acd TH |
67 | } |
68 | ||
8f2abe6a CB |
69 | static int handle_noop(struct kvm_vcpu *vcpu) |
70 | { | |
71 | switch (vcpu->arch.sie_block->icptcode) { | |
72 | case 0x10: | |
73 | vcpu->stat.exit_external_request++; | |
74 | break; | |
8f2abe6a CB |
75 | default: |
76 | break; /* nothing */ | |
77 | } | |
78 | return 0; | |
79 | } | |
80 | ||
81 | static int handle_stop(struct kvm_vcpu *vcpu) | |
82 | { | |
6cddd432 | 83 | struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int; |
9ace903d | 84 | int rc = 0; |
6cddd432 | 85 | uint8_t flags, stop_pending; |
5288fbf0 | 86 | |
8f2abe6a | 87 | vcpu->stat.exit_stop_request++; |
ade38c31 | 88 | |
9a022067 DH |
89 | /* delay the stop if any non-stop irq is pending */ |
90 | if (kvm_s390_vcpu_has_irq(vcpu, 1)) | |
91 | return 0; | |
92 | ||
6cddd432 DH |
93 | /* avoid races with the injection/SIGP STOP code */ |
94 | spin_lock(&li->lock); | |
95 | flags = li->irq.stop.flags; | |
96 | stop_pending = kvm_s390_is_stop_irq_pending(vcpu); | |
97 | spin_unlock(&li->lock); | |
32f5ff63 | 98 | |
6cddd432 DH |
99 | trace_kvm_s390_stop_request(stop_pending, flags); |
100 | if (!stop_pending) | |
32f5ff63 | 101 | return 0; |
9ace903d | 102 | |
6cddd432 | 103 | if (flags & KVM_S390_STOP_FLAG_STORE_STATUS) { |
9e0d5473 JF |
104 | rc = kvm_s390_vcpu_store_status(vcpu, |
105 | KVM_S390_STORE_STATUS_NOADDR); | |
32f5ff63 DH |
106 | if (rc) |
107 | return rc; | |
108 | } | |
109 | ||
6352e4d2 DH |
110 | if (!kvm_s390_user_cpu_state_ctrl(vcpu->kvm)) |
111 | kvm_s390_vcpu_stop(vcpu); | |
32f5ff63 | 112 | return -EOPNOTSUPP; |
8f2abe6a CB |
113 | } |
114 | ||
115 | static int handle_validity(struct kvm_vcpu *vcpu) | |
116 | { | |
117 | int viwhy = vcpu->arch.sie_block->ipb >> 16; | |
3edbcff9 | 118 | |
8f2abe6a | 119 | vcpu->stat.exit_validity++; |
5786fffa | 120 | trace_kvm_s390_intercept_validity(vcpu, viwhy); |
a5efb6b6 CB |
121 | KVM_EVENT(3, "validity intercept 0x%x for pid %u (kvm 0x%pK)", viwhy, |
122 | current->pid, vcpu->kvm); | |
123 | ||
124 | /* do not warn on invalid runtime instrumentation mode */ | |
125 | WARN_ONCE(viwhy != 0x44, "kvm: unhandled validity intercept 0x%x\n", | |
126 | viwhy); | |
127 | return -EINVAL; | |
8f2abe6a CB |
128 | } |
129 | ||
ba5c1e9b CO |
130 | static int handle_instruction(struct kvm_vcpu *vcpu) |
131 | { | |
132 | intercept_handler_t handler; | |
133 | ||
134 | vcpu->stat.exit_instruction++; | |
5786fffa CH |
135 | trace_kvm_s390_intercept_instruction(vcpu, |
136 | vcpu->arch.sie_block->ipa, | |
137 | vcpu->arch.sie_block->ipb); | |
ba5c1e9b CO |
138 | handler = instruction_handlers[vcpu->arch.sie_block->ipa >> 8]; |
139 | if (handler) | |
140 | return handler(vcpu); | |
b8e660b8 | 141 | return -EOPNOTSUPP; |
ba5c1e9b CO |
142 | } |
143 | ||
f6af84e7 | 144 | static int inject_prog_on_prog_intercept(struct kvm_vcpu *vcpu) |
439716a5 | 145 | { |
f6af84e7 DH |
146 | struct kvm_s390_pgm_info pgm_info = { |
147 | .code = vcpu->arch.sie_block->iprcc, | |
eaa4f416 DH |
148 | /* the PSW has already been rewound */ |
149 | .flags = KVM_S390_PGM_FLAGS_NO_REWIND, | |
f6af84e7 | 150 | }; |
439716a5 DH |
151 | |
152 | switch (vcpu->arch.sie_block->iprcc & ~PGM_PER) { | |
153 | case PGM_AFX_TRANSLATION: | |
154 | case PGM_ASX_TRANSLATION: | |
155 | case PGM_EX_TRANSLATION: | |
156 | case PGM_LFX_TRANSLATION: | |
157 | case PGM_LSTE_SEQUENCE: | |
158 | case PGM_LSX_TRANSLATION: | |
159 | case PGM_LX_TRANSLATION: | |
160 | case PGM_PRIMARY_AUTHORITY: | |
161 | case PGM_SECONDARY_AUTHORITY: | |
162 | case PGM_SPACE_SWITCH: | |
f6af84e7 | 163 | pgm_info.trans_exc_code = vcpu->arch.sie_block->tecmc; |
439716a5 DH |
164 | break; |
165 | case PGM_ALEN_TRANSLATION: | |
166 | case PGM_ALE_SEQUENCE: | |
167 | case PGM_ASTE_INSTANCE: | |
168 | case PGM_ASTE_SEQUENCE: | |
169 | case PGM_ASTE_VALIDITY: | |
170 | case PGM_EXTENDED_AUTHORITY: | |
f6af84e7 | 171 | pgm_info.exc_access_id = vcpu->arch.sie_block->eai; |
439716a5 DH |
172 | break; |
173 | case PGM_ASCE_TYPE: | |
174 | case PGM_PAGE_TRANSLATION: | |
175 | case PGM_REGION_FIRST_TRANS: | |
176 | case PGM_REGION_SECOND_TRANS: | |
177 | case PGM_REGION_THIRD_TRANS: | |
178 | case PGM_SEGMENT_TRANSLATION: | |
f6af84e7 DH |
179 | pgm_info.trans_exc_code = vcpu->arch.sie_block->tecmc; |
180 | pgm_info.exc_access_id = vcpu->arch.sie_block->eai; | |
181 | pgm_info.op_access_id = vcpu->arch.sie_block->oai; | |
439716a5 DH |
182 | break; |
183 | case PGM_MONITOR: | |
f6af84e7 DH |
184 | pgm_info.mon_class_nr = vcpu->arch.sie_block->mcn; |
185 | pgm_info.mon_code = vcpu->arch.sie_block->tecmc; | |
439716a5 | 186 | break; |
403c8648 | 187 | case PGM_VECTOR_PROCESSING: |
439716a5 | 188 | case PGM_DATA: |
f6af84e7 | 189 | pgm_info.data_exc_code = vcpu->arch.sie_block->dxc; |
439716a5 DH |
190 | break; |
191 | case PGM_PROTECTION: | |
f6af84e7 DH |
192 | pgm_info.trans_exc_code = vcpu->arch.sie_block->tecmc; |
193 | pgm_info.exc_access_id = vcpu->arch.sie_block->eai; | |
439716a5 DH |
194 | break; |
195 | default: | |
196 | break; | |
197 | } | |
198 | ||
199 | if (vcpu->arch.sie_block->iprcc & PGM_PER) { | |
f6af84e7 DH |
200 | pgm_info.per_code = vcpu->arch.sie_block->perc; |
201 | pgm_info.per_atmid = vcpu->arch.sie_block->peratmid; | |
202 | pgm_info.per_address = vcpu->arch.sie_block->peraddr; | |
203 | pgm_info.per_access_id = vcpu->arch.sie_block->peraid; | |
439716a5 | 204 | } |
f6af84e7 | 205 | return kvm_s390_inject_prog_irq(vcpu, &pgm_info); |
439716a5 DH |
206 | } |
207 | ||
e325fe69 MM |
208 | /* |
209 | * restore ITDB to program-interruption TDB in guest lowcore | |
210 | * and set TX abort indication if required | |
211 | */ | |
212 | static int handle_itdb(struct kvm_vcpu *vcpu) | |
213 | { | |
214 | struct kvm_s390_itdb *itdb; | |
215 | int rc; | |
216 | ||
217 | if (!IS_TE_ENABLED(vcpu) || !IS_ITDB_VALID(vcpu)) | |
218 | return 0; | |
219 | if (current->thread.per_flags & PER_FLAG_NO_TE) | |
220 | return 0; | |
221 | itdb = (struct kvm_s390_itdb *)vcpu->arch.sie_block->itdba; | |
222 | rc = write_guest_lc(vcpu, __LC_PGM_TDB, itdb, sizeof(*itdb)); | |
223 | if (rc) | |
224 | return rc; | |
225 | memset(itdb, 0, sizeof(*itdb)); | |
226 | ||
227 | return 0; | |
228 | } | |
229 | ||
27291e21 DH |
230 | #define per_event(vcpu) (vcpu->arch.sie_block->iprcc & PGM_PER) |
231 | ||
ba5c1e9b CO |
232 | static int handle_prog(struct kvm_vcpu *vcpu) |
233 | { | |
684135e0 | 234 | psw_t psw; |
0040e7d2 HC |
235 | int rc; |
236 | ||
ba5c1e9b | 237 | vcpu->stat.exit_program_interruption++; |
7feb6bb8 | 238 | |
27291e21 | 239 | if (guestdbg_enabled(vcpu) && per_event(vcpu)) { |
a69cbe81 DH |
240 | rc = kvm_s390_handle_per_event(vcpu); |
241 | if (rc) | |
242 | return rc; | |
27291e21 DH |
243 | /* the interrupt might have been filtered out completely */ |
244 | if (vcpu->arch.sie_block->iprcc == 0) | |
245 | return 0; | |
246 | } | |
247 | ||
e325fe69 | 248 | trace_kvm_s390_intercept_prog(vcpu, vcpu->arch.sie_block->iprcc); |
684135e0 TH |
249 | if (vcpu->arch.sie_block->iprcc == PGM_SPECIFICATION) { |
250 | rc = read_guest_lc(vcpu, __LC_PGM_NEW_PSW, &psw, sizeof(psw_t)); | |
251 | if (rc) | |
252 | return rc; | |
253 | /* Avoid endless loops of specification exceptions */ | |
254 | if (!is_valid_psw(&psw)) | |
255 | return -EOPNOTSUPP; | |
256 | } | |
e325fe69 | 257 | rc = handle_itdb(vcpu); |
0040e7d2 HC |
258 | if (rc) |
259 | return rc; | |
439716a5 | 260 | |
f6af84e7 | 261 | return inject_prog_on_prog_intercept(vcpu); |
ba5c1e9b CO |
262 | } |
263 | ||
f14d82e0 TH |
264 | /** |
265 | * handle_external_interrupt - used for external interruption interceptions | |
266 | * | |
267 | * This interception only occurs if the CPUSTAT_EXT_INT bit was set, or if | |
268 | * the new PSW does not have external interrupts disabled. In the first case, | |
269 | * we've got to deliver the interrupt manually, and in the second case, we | |
270 | * drop to userspace to handle the situation there. | |
271 | */ | |
272 | static int handle_external_interrupt(struct kvm_vcpu *vcpu) | |
273 | { | |
274 | u16 eic = vcpu->arch.sie_block->eic; | |
383d0b05 | 275 | struct kvm_s390_irq irq; |
f14d82e0 TH |
276 | psw_t newpsw; |
277 | int rc; | |
278 | ||
279 | vcpu->stat.exit_external_interrupt++; | |
280 | ||
281 | rc = read_guest_lc(vcpu, __LC_EXT_NEW_PSW, &newpsw, sizeof(psw_t)); | |
282 | if (rc) | |
283 | return rc; | |
284 | /* We can not handle clock comparator or timer interrupt with bad PSW */ | |
285 | if ((eic == EXT_IRQ_CLK_COMP || eic == EXT_IRQ_CPU_TIMER) && | |
286 | (newpsw.mask & PSW_MASK_EXT)) | |
287 | return -EOPNOTSUPP; | |
288 | ||
289 | switch (eic) { | |
290 | case EXT_IRQ_CLK_COMP: | |
291 | irq.type = KVM_S390_INT_CLOCK_COMP; | |
292 | break; | |
293 | case EXT_IRQ_CPU_TIMER: | |
294 | irq.type = KVM_S390_INT_CPU_TIMER; | |
295 | break; | |
296 | case EXT_IRQ_EXTERNAL_CALL: | |
297 | irq.type = KVM_S390_INT_EXTERNAL_CALL; | |
383d0b05 | 298 | irq.u.extcall.code = vcpu->arch.sie_block->extcpuaddr; |
ea5f4969 DH |
299 | rc = kvm_s390_inject_vcpu(vcpu, &irq); |
300 | /* ignore if another external call is already pending */ | |
301 | if (rc == -EBUSY) | |
302 | return 0; | |
303 | return rc; | |
f14d82e0 TH |
304 | default: |
305 | return -EOPNOTSUPP; | |
306 | } | |
307 | ||
308 | return kvm_s390_inject_vcpu(vcpu, &irq); | |
309 | } | |
310 | ||
9a558ee3 TH |
311 | /** |
312 | * Handle MOVE PAGE partial execution interception. | |
313 | * | |
314 | * This interception can only happen for guests with DAT disabled and | |
315 | * addresses that are currently not mapped in the host. Thus we try to | |
316 | * set up the mappings for the corresponding user pages here (or throw | |
317 | * addressing exceptions in case of illegal guest addresses). | |
318 | */ | |
319 | static int handle_mvpg_pei(struct kvm_vcpu *vcpu) | |
320 | { | |
f22166dc | 321 | unsigned long srcaddr, dstaddr; |
9a558ee3 TH |
322 | int reg1, reg2, rc; |
323 | ||
324 | kvm_s390_get_regs_rre(vcpu, ®1, ®2); | |
9a558ee3 TH |
325 | |
326 | /* Make sure that the source is paged-in */ | |
3cfad023 | 327 | rc = guest_translate_address(vcpu, vcpu->run->s.regs.gprs[reg2], |
92c96321 | 328 | reg2, &srcaddr, GACC_FETCH); |
3cfad023 TH |
329 | if (rc) |
330 | return kvm_s390_inject_prog_cond(vcpu, rc); | |
f22166dc TH |
331 | rc = kvm_arch_fault_in_page(vcpu, srcaddr, 0); |
332 | if (rc != 0) | |
9a558ee3 TH |
333 | return rc; |
334 | ||
335 | /* Make sure that the destination is paged-in */ | |
3cfad023 | 336 | rc = guest_translate_address(vcpu, vcpu->run->s.regs.gprs[reg1], |
92c96321 | 337 | reg1, &dstaddr, GACC_STORE); |
3cfad023 TH |
338 | if (rc) |
339 | return kvm_s390_inject_prog_cond(vcpu, rc); | |
f22166dc TH |
340 | rc = kvm_arch_fault_in_page(vcpu, dstaddr, 1); |
341 | if (rc != 0) | |
9a558ee3 TH |
342 | return rc; |
343 | ||
0e8bc06a | 344 | kvm_s390_retry_instr(vcpu); |
9a558ee3 TH |
345 | |
346 | return 0; | |
347 | } | |
348 | ||
349 | static int handle_partial_execution(struct kvm_vcpu *vcpu) | |
350 | { | |
9ec6de19 AY |
351 | vcpu->stat.exit_pei++; |
352 | ||
9a558ee3 TH |
353 | if (vcpu->arch.sie_block->ipa == 0xb254) /* MVPG */ |
354 | return handle_mvpg_pei(vcpu); | |
4953919f DH |
355 | if (vcpu->arch.sie_block->ipa >> 8 == 0xae) /* SIGP */ |
356 | return kvm_s390_handle_sigp_pei(vcpu); | |
9a558ee3 TH |
357 | |
358 | return -EOPNOTSUPP; | |
359 | } | |
360 | ||
b7c92f1a QH |
361 | /* |
362 | * Handle the sthyi instruction that provides the guest with system | |
363 | * information, like current CPU resources available at each level of | |
364 | * the machine. | |
365 | */ | |
366 | int handle_sthyi(struct kvm_vcpu *vcpu) | |
367 | { | |
368 | int reg1, reg2, r = 0; | |
369 | u64 code, addr, cc = 0, rc = 0; | |
370 | struct sthyi_sctns *sctns = NULL; | |
371 | ||
372 | if (!test_kvm_facility(vcpu->kvm, 74)) | |
373 | return kvm_s390_inject_program_int(vcpu, PGM_OPERATION); | |
374 | ||
b7c92f1a QH |
375 | kvm_s390_get_regs_rre(vcpu, ®1, ®2); |
376 | code = vcpu->run->s.regs.gprs[reg1]; | |
377 | addr = vcpu->run->s.regs.gprs[reg2]; | |
378 | ||
379 | vcpu->stat.instruction_sthyi++; | |
380 | VCPU_EVENT(vcpu, 3, "STHYI: fc: %llu addr: 0x%016llx", code, addr); | |
381 | trace_kvm_s390_handle_sthyi(vcpu, code, addr); | |
382 | ||
383 | if (reg1 == reg2 || reg1 & 1 || reg2 & 1) | |
384 | return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION); | |
385 | ||
386 | if (code & 0xffff) { | |
387 | cc = 3; | |
388 | rc = 4; | |
389 | goto out; | |
390 | } | |
391 | ||
392 | if (addr & ~PAGE_MASK) | |
393 | return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION); | |
394 | ||
395 | sctns = (void *)get_zeroed_page(GFP_KERNEL); | |
396 | if (!sctns) | |
397 | return -ENOMEM; | |
398 | ||
399 | cc = sthyi_fill(sctns, &rc); | |
400 | ||
401 | out: | |
402 | if (!cc) { | |
403 | r = write_guest(vcpu, addr, reg2, sctns, PAGE_SIZE); | |
404 | if (r) { | |
405 | free_page((unsigned long)sctns); | |
406 | return kvm_s390_inject_prog_cond(vcpu, r); | |
407 | } | |
408 | } | |
409 | ||
410 | free_page((unsigned long)sctns); | |
411 | vcpu->run->s.regs.gprs[reg2 + 1] = rc; | |
412 | kvm_s390_set_psw_cc(vcpu, cc); | |
413 | return r; | |
414 | } | |
415 | ||
a011eeb2 JF |
416 | static int handle_operexc(struct kvm_vcpu *vcpu) |
417 | { | |
fb7dc1d4 CB |
418 | psw_t oldpsw, newpsw; |
419 | int rc; | |
420 | ||
a011eeb2 JF |
421 | vcpu->stat.exit_operation_exception++; |
422 | trace_kvm_s390_handle_operexc(vcpu, vcpu->arch.sie_block->ipa, | |
423 | vcpu->arch.sie_block->ipb); | |
424 | ||
c0a6bfdc | 425 | if (vcpu->arch.sie_block->ipa == 0xb256) |
95ca2cb5 JF |
426 | return handle_sthyi(vcpu); |
427 | ||
6502a34c DH |
428 | if (vcpu->arch.sie_block->ipa == 0 && vcpu->kvm->arch.user_instr0) |
429 | return -EOPNOTSUPP; | |
fb7dc1d4 CB |
430 | rc = read_guest_lc(vcpu, __LC_PGM_NEW_PSW, &newpsw, sizeof(psw_t)); |
431 | if (rc) | |
432 | return rc; | |
433 | /* | |
434 | * Avoid endless loops of operation exceptions, if the pgm new | |
435 | * PSW will cause a new operation exception. | |
436 | * The heuristic checks if the pgm new psw is within 6 bytes before | |
437 | * the faulting psw address (with same DAT, AS settings) and the | |
438 | * new psw is not a wait psw and the fault was not triggered by | |
439 | * problem state. | |
440 | */ | |
441 | oldpsw = vcpu->arch.sie_block->gpsw; | |
442 | if (oldpsw.addr - newpsw.addr <= 6 && | |
443 | !(newpsw.mask & PSW_MASK_WAIT) && | |
444 | !(oldpsw.mask & PSW_MASK_PSTATE) && | |
445 | (newpsw.mask & PSW_MASK_ASC) == (oldpsw.mask & PSW_MASK_ASC) && | |
446 | (newpsw.mask & PSW_MASK_DAT) == (oldpsw.mask & PSW_MASK_DAT)) | |
447 | return -EOPNOTSUPP; | |
6502a34c | 448 | |
a011eeb2 JF |
449 | return kvm_s390_inject_program_int(vcpu, PGM_OPERATION); |
450 | } | |
451 | ||
8f2abe6a CB |
452 | int kvm_handle_sie_intercept(struct kvm_vcpu *vcpu) |
453 | { | |
5ffe466c DH |
454 | int rc, per_rc = 0; |
455 | ||
71f116bf DH |
456 | if (kvm_is_ucontrol(vcpu->kvm)) |
457 | return -EOPNOTSUPP; | |
458 | ||
46b708ea | 459 | switch (vcpu->arch.sie_block->icptcode) { |
947b8972 FA |
460 | case ICPT_EXTREQ: |
461 | case ICPT_IOREQ: | |
46b708ea | 462 | return handle_noop(vcpu); |
947b8972 | 463 | case ICPT_INST: |
5ffe466c DH |
464 | rc = handle_instruction(vcpu); |
465 | break; | |
947b8972 | 466 | case ICPT_PROGI: |
46b708ea | 467 | return handle_prog(vcpu); |
947b8972 | 468 | case ICPT_EXTINT: |
46b708ea | 469 | return handle_external_interrupt(vcpu); |
947b8972 | 470 | case ICPT_WAIT: |
46b708ea | 471 | return kvm_s390_handle_wait(vcpu); |
947b8972 | 472 | case ICPT_VALIDITY: |
46b708ea | 473 | return handle_validity(vcpu); |
947b8972 | 474 | case ICPT_STOP: |
46b708ea | 475 | return handle_stop(vcpu); |
947b8972 | 476 | case ICPT_OPEREXC: |
5ffe466c DH |
477 | rc = handle_operexc(vcpu); |
478 | break; | |
947b8972 | 479 | case ICPT_PARTEXEC: |
5ffe466c DH |
480 | rc = handle_partial_execution(vcpu); |
481 | break; | |
730cd632 FA |
482 | case ICPT_KSS: |
483 | rc = kvm_s390_skey_check_enable(vcpu); | |
484 | break; | |
46b708ea | 485 | default: |
b8e660b8 | 486 | return -EOPNOTSUPP; |
46b708ea | 487 | } |
5ffe466c DH |
488 | |
489 | /* process PER, also if the instrution is processed in user space */ | |
490 | if (vcpu->arch.sie_block->icptstatus & 0x02 && | |
491 | (!rc || rc == -EOPNOTSUPP)) | |
492 | per_rc = kvm_s390_handle_per_ifetch_icpt(vcpu); | |
493 | return per_rc ? per_rc : rc; | |
8f2abe6a | 494 | } |