Commit | Line | Data |
---|---|---|
453423dc | 1 | /* |
a53c8fab | 2 | * handling privileged instructions |
453423dc | 3 | * |
69d0d3a3 | 4 | * Copyright IBM Corp. 2008, 2013 |
453423dc CB |
5 | * |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License (version 2 only) | |
8 | * as published by the Free Software Foundation. | |
9 | * | |
10 | * Author(s): Carsten Otte <cotte@de.ibm.com> | |
11 | * Christian Borntraeger <borntraeger@de.ibm.com> | |
12 | */ | |
13 | ||
14 | #include <linux/kvm.h> | |
5a0e3ad6 | 15 | #include <linux/gfp.h> |
453423dc | 16 | #include <linux/errno.h> |
b13b5dc7 | 17 | #include <linux/compat.h> |
7c959e82 | 18 | #include <asm/asm-offsets.h> |
e769ece3 | 19 | #include <asm/facility.h> |
453423dc CB |
20 | #include <asm/current.h> |
21 | #include <asm/debug.h> | |
22 | #include <asm/ebcdic.h> | |
23 | #include <asm/sysinfo.h> | |
69d0d3a3 CB |
24 | #include <asm/pgtable.h> |
25 | #include <asm/pgalloc.h> | |
26 | #include <asm/io.h> | |
48a3e950 CH |
27 | #include <asm/ptrace.h> |
28 | #include <asm/compat.h> | |
453423dc CB |
29 | #include "gaccess.h" |
30 | #include "kvm-s390.h" | |
5786fffa | 31 | #include "trace.h" |
453423dc | 32 | |
6a3f95a6 TH |
33 | /* Handle SCK (SET CLOCK) interception */ |
34 | static int handle_set_clock(struct kvm_vcpu *vcpu) | |
35 | { | |
36 | struct kvm_vcpu *cpup; | |
37 | s64 hostclk, val; | |
0e7a3f94 | 38 | int i, rc; |
6a3f95a6 | 39 | u64 op2; |
6a3f95a6 TH |
40 | |
41 | if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE) | |
42 | return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OP); | |
43 | ||
44 | op2 = kvm_s390_get_base_disp_s(vcpu); | |
45 | if (op2 & 7) /* Operand must be on a doubleword boundary */ | |
46 | return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION); | |
0e7a3f94 HC |
47 | rc = read_guest(vcpu, op2, &val, sizeof(val)); |
48 | if (rc) | |
49 | return kvm_s390_inject_prog_cond(vcpu, rc); | |
6a3f95a6 TH |
50 | |
51 | if (store_tod_clock(&hostclk)) { | |
52 | kvm_s390_set_psw_cc(vcpu, 3); | |
53 | return 0; | |
54 | } | |
55 | val = (val - hostclk) & ~0x3fUL; | |
56 | ||
57 | mutex_lock(&vcpu->kvm->lock); | |
58 | kvm_for_each_vcpu(i, cpup, vcpu->kvm) | |
59 | cpup->arch.sie_block->epoch = val; | |
60 | mutex_unlock(&vcpu->kvm->lock); | |
61 | ||
62 | kvm_s390_set_psw_cc(vcpu, 0); | |
63 | return 0; | |
64 | } | |
65 | ||
453423dc CB |
66 | static int handle_set_prefix(struct kvm_vcpu *vcpu) |
67 | { | |
453423dc | 68 | u64 operand2; |
665170cb HC |
69 | u32 address; |
70 | int rc; | |
453423dc CB |
71 | |
72 | vcpu->stat.instruction_spx++; | |
73 | ||
5087dfa6 TH |
74 | if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE) |
75 | return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OP); | |
76 | ||
b1c571a5 | 77 | operand2 = kvm_s390_get_base_disp_s(vcpu); |
453423dc CB |
78 | |
79 | /* must be word boundary */ | |
db4a29cb HC |
80 | if (operand2 & 3) |
81 | return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION); | |
453423dc CB |
82 | |
83 | /* get the value */ | |
665170cb HC |
84 | rc = read_guest(vcpu, operand2, &address, sizeof(address)); |
85 | if (rc) | |
86 | return kvm_s390_inject_prog_cond(vcpu, rc); | |
87 | ||
88 | address &= 0x7fffe000u; | |
89 | ||
90 | /* | |
91 | * Make sure the new value is valid memory. We only need to check the | |
92 | * first page, since address is 8k aligned and memory pieces are always | |
93 | * at least 1MB aligned and have at least a size of 1MB. | |
94 | */ | |
95 | if (kvm_is_error_gpa(vcpu->kvm, address)) | |
db4a29cb | 96 | return kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING); |
453423dc | 97 | |
8d26cf7b | 98 | kvm_s390_set_prefix(vcpu, address); |
453423dc CB |
99 | |
100 | VCPU_EVENT(vcpu, 5, "setting prefix to %x", address); | |
5786fffa | 101 | trace_kvm_s390_handle_prefix(vcpu, 1, address); |
453423dc CB |
102 | return 0; |
103 | } | |
104 | ||
105 | static int handle_store_prefix(struct kvm_vcpu *vcpu) | |
106 | { | |
453423dc CB |
107 | u64 operand2; |
108 | u32 address; | |
f748f4a7 | 109 | int rc; |
453423dc CB |
110 | |
111 | vcpu->stat.instruction_stpx++; | |
b1c571a5 | 112 | |
5087dfa6 TH |
113 | if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE) |
114 | return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OP); | |
115 | ||
b1c571a5 | 116 | operand2 = kvm_s390_get_base_disp_s(vcpu); |
453423dc CB |
117 | |
118 | /* must be word boundary */ | |
db4a29cb HC |
119 | if (operand2 & 3) |
120 | return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION); | |
453423dc | 121 | |
fda902cb | 122 | address = kvm_s390_get_prefix(vcpu); |
453423dc CB |
123 | |
124 | /* get the value */ | |
f748f4a7 HC |
125 | rc = write_guest(vcpu, operand2, &address, sizeof(address)); |
126 | if (rc) | |
127 | return kvm_s390_inject_prog_cond(vcpu, rc); | |
453423dc CB |
128 | |
129 | VCPU_EVENT(vcpu, 5, "storing prefix to %x", address); | |
5786fffa | 130 | trace_kvm_s390_handle_prefix(vcpu, 0, address); |
453423dc CB |
131 | return 0; |
132 | } | |
133 | ||
134 | static int handle_store_cpu_address(struct kvm_vcpu *vcpu) | |
135 | { | |
8b96de0e HC |
136 | u16 vcpu_id = vcpu->vcpu_id; |
137 | u64 ga; | |
138 | int rc; | |
453423dc CB |
139 | |
140 | vcpu->stat.instruction_stap++; | |
b1c571a5 | 141 | |
5087dfa6 TH |
142 | if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE) |
143 | return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OP); | |
144 | ||
8b96de0e | 145 | ga = kvm_s390_get_base_disp_s(vcpu); |
453423dc | 146 | |
8b96de0e | 147 | if (ga & 1) |
db4a29cb | 148 | return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION); |
453423dc | 149 | |
8b96de0e HC |
150 | rc = write_guest(vcpu, ga, &vcpu_id, sizeof(vcpu_id)); |
151 | if (rc) | |
152 | return kvm_s390_inject_prog_cond(vcpu, rc); | |
453423dc | 153 | |
8b96de0e HC |
154 | VCPU_EVENT(vcpu, 5, "storing cpu address to %llx", ga); |
155 | trace_kvm_s390_handle_stap(vcpu, ga); | |
453423dc CB |
156 | return 0; |
157 | } | |
158 | ||
3ac8e380 | 159 | static int __skey_check_enable(struct kvm_vcpu *vcpu) |
693ffc08 | 160 | { |
3ac8e380 | 161 | int rc = 0; |
693ffc08 | 162 | if (!(vcpu->arch.sie_block->ictl & (ICTL_ISKE | ICTL_SSKE | ICTL_RRBE))) |
3ac8e380 | 163 | return rc; |
693ffc08 | 164 | |
3ac8e380 | 165 | rc = s390_enable_skey(); |
693ffc08 DD |
166 | trace_kvm_s390_skey_related_inst(vcpu); |
167 | vcpu->arch.sie_block->ictl &= ~(ICTL_ISKE | ICTL_SSKE | ICTL_RRBE); | |
3ac8e380 | 168 | return rc; |
693ffc08 DD |
169 | } |
170 | ||
171 | ||
453423dc CB |
172 | static int handle_skey(struct kvm_vcpu *vcpu) |
173 | { | |
3ac8e380 | 174 | int rc = __skey_check_enable(vcpu); |
693ffc08 | 175 | |
3ac8e380 DD |
176 | if (rc) |
177 | return rc; | |
453423dc | 178 | vcpu->stat.instruction_storage_key++; |
5087dfa6 TH |
179 | |
180 | if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE) | |
181 | return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OP); | |
182 | ||
04b41acd | 183 | kvm_s390_rewind_psw(vcpu, 4); |
453423dc CB |
184 | VCPU_EVENT(vcpu, 4, "%s", "retrying storage key operation"); |
185 | return 0; | |
186 | } | |
187 | ||
8a242234 HC |
188 | static int handle_ipte_interlock(struct kvm_vcpu *vcpu) |
189 | { | |
8a242234 | 190 | vcpu->stat.instruction_ipte_interlock++; |
04b41acd | 191 | if (psw_bits(vcpu->arch.sie_block->gpsw).p) |
8a242234 HC |
192 | return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OP); |
193 | wait_event(vcpu->kvm->arch.ipte_wq, !ipte_lock_held(vcpu)); | |
04b41acd | 194 | kvm_s390_rewind_psw(vcpu, 4); |
8a242234 HC |
195 | VCPU_EVENT(vcpu, 4, "%s", "retrying ipte interlock operation"); |
196 | return 0; | |
197 | } | |
198 | ||
aca84241 TH |
199 | static int handle_test_block(struct kvm_vcpu *vcpu) |
200 | { | |
aca84241 TH |
201 | gpa_t addr; |
202 | int reg2; | |
203 | ||
204 | if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE) | |
205 | return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OP); | |
206 | ||
207 | kvm_s390_get_regs_rre(vcpu, NULL, ®2); | |
208 | addr = vcpu->run->s.regs.gprs[reg2] & PAGE_MASK; | |
e45efa28 | 209 | addr = kvm_s390_logical_to_effective(vcpu, addr); |
dd9e5b7b | 210 | if (kvm_s390_check_low_addr_prot_real(vcpu, addr)) |
e45efa28 | 211 | return kvm_s390_inject_prog_irq(vcpu, &vcpu->arch.pgm); |
aca84241 TH |
212 | addr = kvm_s390_real_to_abs(vcpu, addr); |
213 | ||
ef23e779 | 214 | if (kvm_is_error_gpa(vcpu->kvm, addr)) |
aca84241 TH |
215 | return kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING); |
216 | /* | |
217 | * We don't expect errors on modern systems, and do not care | |
218 | * about storage keys (yet), so let's just clear the page. | |
219 | */ | |
ef23e779 | 220 | if (kvm_clear_guest(vcpu->kvm, addr, PAGE_SIZE)) |
aca84241 TH |
221 | return -EFAULT; |
222 | kvm_s390_set_psw_cc(vcpu, 0); | |
223 | vcpu->run->s.regs.gprs[0] = 0; | |
224 | return 0; | |
225 | } | |
226 | ||
fa6b7fe9 | 227 | static int handle_tpi(struct kvm_vcpu *vcpu) |
453423dc | 228 | { |
fa6b7fe9 | 229 | struct kvm_s390_interrupt_info *inti; |
4799b557 HC |
230 | unsigned long len; |
231 | u32 tpi_data[3]; | |
261520dc | 232 | int rc; |
7c959e82 | 233 | u64 addr; |
fa6b7fe9 CH |
234 | |
235 | addr = kvm_s390_get_base_disp_s(vcpu); | |
db4a29cb HC |
236 | if (addr & 3) |
237 | return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION); | |
261520dc | 238 | |
f092669e | 239 | inti = kvm_s390_get_io_int(vcpu->kvm, vcpu->arch.sie_block->gcr[6], 0); |
261520dc DH |
240 | if (!inti) { |
241 | kvm_s390_set_psw_cc(vcpu, 0); | |
242 | return 0; | |
243 | } | |
244 | ||
4799b557 HC |
245 | tpi_data[0] = inti->io.subchannel_id << 16 | inti->io.subchannel_nr; |
246 | tpi_data[1] = inti->io.io_int_parm; | |
247 | tpi_data[2] = inti->io.io_int_word; | |
7c959e82 HC |
248 | if (addr) { |
249 | /* | |
250 | * Store the two-word I/O interruption code into the | |
251 | * provided area. | |
252 | */ | |
4799b557 HC |
253 | len = sizeof(tpi_data) - 4; |
254 | rc = write_guest(vcpu, addr, &tpi_data, len); | |
261520dc DH |
255 | if (rc) { |
256 | rc = kvm_s390_inject_prog_cond(vcpu, rc); | |
257 | goto reinject_interrupt; | |
258 | } | |
7c959e82 HC |
259 | } else { |
260 | /* | |
261 | * Store the three-word I/O interruption code into | |
262 | * the appropriate lowcore area. | |
263 | */ | |
4799b557 | 264 | len = sizeof(tpi_data); |
261520dc DH |
265 | if (write_guest_lc(vcpu, __LC_SUBCHANNEL_ID, &tpi_data, len)) { |
266 | /* failed writes to the low core are not recoverable */ | |
4799b557 | 267 | rc = -EFAULT; |
261520dc DH |
268 | goto reinject_interrupt; |
269 | } | |
7c959e82 | 270 | } |
261520dc DH |
271 | |
272 | /* irq was successfully handed to the guest */ | |
273 | kfree(inti); | |
274 | kvm_s390_set_psw_cc(vcpu, 1); | |
275 | return 0; | |
276 | reinject_interrupt: | |
2f32d4ea CH |
277 | /* |
278 | * If we encounter a problem storing the interruption code, the | |
279 | * instruction is suppressed from the guest's view: reinject the | |
280 | * interrupt. | |
281 | */ | |
15462e37 DH |
282 | if (kvm_s390_reinject_io_int(vcpu->kvm, inti)) { |
283 | kfree(inti); | |
284 | rc = -EFAULT; | |
285 | } | |
261520dc | 286 | /* don't set the cc, a pgm irq was injected or we drop to user space */ |
4799b557 | 287 | return rc ? -EFAULT : 0; |
453423dc CB |
288 | } |
289 | ||
fa6b7fe9 CH |
290 | static int handle_tsch(struct kvm_vcpu *vcpu) |
291 | { | |
292 | struct kvm_s390_interrupt_info *inti; | |
293 | ||
294 | inti = kvm_s390_get_io_int(vcpu->kvm, 0, | |
295 | vcpu->run->s.regs.gprs[1]); | |
296 | ||
297 | /* | |
298 | * Prepare exit to userspace. | |
299 | * We indicate whether we dequeued a pending I/O interrupt | |
300 | * so that userspace can re-inject it if the instruction gets | |
301 | * a program check. While this may re-order the pending I/O | |
302 | * interrupts, this is no problem since the priority is kept | |
303 | * intact. | |
304 | */ | |
305 | vcpu->run->exit_reason = KVM_EXIT_S390_TSCH; | |
306 | vcpu->run->s390_tsch.dequeued = !!inti; | |
307 | if (inti) { | |
308 | vcpu->run->s390_tsch.subchannel_id = inti->io.subchannel_id; | |
309 | vcpu->run->s390_tsch.subchannel_nr = inti->io.subchannel_nr; | |
310 | vcpu->run->s390_tsch.io_int_parm = inti->io.io_int_parm; | |
311 | vcpu->run->s390_tsch.io_int_word = inti->io.io_int_word; | |
312 | } | |
313 | vcpu->run->s390_tsch.ipb = vcpu->arch.sie_block->ipb; | |
314 | kfree(inti); | |
315 | return -EREMOTE; | |
316 | } | |
317 | ||
318 | static int handle_io_inst(struct kvm_vcpu *vcpu) | |
319 | { | |
320 | VCPU_EVENT(vcpu, 4, "%s", "I/O instruction"); | |
321 | ||
5087dfa6 TH |
322 | if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE) |
323 | return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OP); | |
324 | ||
fa6b7fe9 CH |
325 | if (vcpu->kvm->arch.css_support) { |
326 | /* | |
327 | * Most I/O instructions will be handled by userspace. | |
328 | * Exceptions are tpi and the interrupt portion of tsch. | |
329 | */ | |
330 | if (vcpu->arch.sie_block->ipa == 0xb236) | |
331 | return handle_tpi(vcpu); | |
332 | if (vcpu->arch.sie_block->ipa == 0xb235) | |
333 | return handle_tsch(vcpu); | |
334 | /* Handle in userspace. */ | |
335 | return -EOPNOTSUPP; | |
336 | } else { | |
337 | /* | |
b4a96015 | 338 | * Set condition code 3 to stop the guest from issuing channel |
fa6b7fe9 CH |
339 | * I/O instructions. |
340 | */ | |
ea828ebf | 341 | kvm_s390_set_psw_cc(vcpu, 3); |
fa6b7fe9 CH |
342 | return 0; |
343 | } | |
344 | } | |
345 | ||
453423dc CB |
346 | static int handle_stfl(struct kvm_vcpu *vcpu) |
347 | { | |
453423dc | 348 | int rc; |
9d8d5786 | 349 | unsigned int fac; |
453423dc CB |
350 | |
351 | vcpu->stat.instruction_stfl++; | |
5087dfa6 TH |
352 | |
353 | if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE) | |
354 | return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OP); | |
355 | ||
9d8d5786 MM |
356 | /* |
357 | * We need to shift the lower 32 facility bits (bit 0-31) from a u64 | |
358 | * into a u32 memory representation. They will remain bits 0-31. | |
359 | */ | |
981467c9 | 360 | fac = *vcpu->kvm->arch.model.fac->list >> 32; |
0f9701c6 | 361 | rc = write_guest_lc(vcpu, offsetof(struct _lowcore, stfl_fac_list), |
9d8d5786 | 362 | &fac, sizeof(fac)); |
dc5008b9 | 363 | if (rc) |
0f9701c6 | 364 | return rc; |
9d8d5786 MM |
365 | VCPU_EVENT(vcpu, 5, "store facility list value %x", fac); |
366 | trace_kvm_s390_handle_stfl(vcpu, fac); | |
453423dc CB |
367 | return 0; |
368 | } | |
369 | ||
48a3e950 CH |
370 | #define PSW_MASK_ADDR_MODE (PSW_MASK_EA | PSW_MASK_BA) |
371 | #define PSW_MASK_UNASSIGNED 0xb80800fe7fffffffUL | |
d21683ea | 372 | #define PSW_ADDR_24 0x0000000000ffffffUL |
48a3e950 CH |
373 | #define PSW_ADDR_31 0x000000007fffffffUL |
374 | ||
a3fb577e TH |
375 | int is_valid_psw(psw_t *psw) |
376 | { | |
3736b874 HC |
377 | if (psw->mask & PSW_MASK_UNASSIGNED) |
378 | return 0; | |
379 | if ((psw->mask & PSW_MASK_ADDR_MODE) == PSW_MASK_BA) { | |
380 | if (psw->addr & ~PSW_ADDR_31) | |
381 | return 0; | |
382 | } | |
383 | if (!(psw->mask & PSW_MASK_ADDR_MODE) && (psw->addr & ~PSW_ADDR_24)) | |
384 | return 0; | |
385 | if ((psw->mask & PSW_MASK_ADDR_MODE) == PSW_MASK_EA) | |
386 | return 0; | |
a3fb577e TH |
387 | if (psw->addr & 1) |
388 | return 0; | |
3736b874 HC |
389 | return 1; |
390 | } | |
391 | ||
48a3e950 CH |
392 | int kvm_s390_handle_lpsw(struct kvm_vcpu *vcpu) |
393 | { | |
3736b874 | 394 | psw_t *gpsw = &vcpu->arch.sie_block->gpsw; |
48a3e950 | 395 | psw_compat_t new_psw; |
3736b874 | 396 | u64 addr; |
2d8bcaed | 397 | int rc; |
48a3e950 | 398 | |
3736b874 | 399 | if (gpsw->mask & PSW_MASK_PSTATE) |
208dd756 TH |
400 | return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OP); |
401 | ||
48a3e950 | 402 | addr = kvm_s390_get_base_disp_s(vcpu); |
6fd0fcc9 HC |
403 | if (addr & 7) |
404 | return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION); | |
2d8bcaed HC |
405 | |
406 | rc = read_guest(vcpu, addr, &new_psw, sizeof(new_psw)); | |
407 | if (rc) | |
408 | return kvm_s390_inject_prog_cond(vcpu, rc); | |
6fd0fcc9 HC |
409 | if (!(new_psw.mask & PSW32_MASK_BASE)) |
410 | return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION); | |
3736b874 HC |
411 | gpsw->mask = (new_psw.mask & ~PSW32_MASK_BASE) << 32; |
412 | gpsw->mask |= new_psw.addr & PSW32_ADDR_AMODE; | |
413 | gpsw->addr = new_psw.addr & ~PSW32_ADDR_AMODE; | |
414 | if (!is_valid_psw(gpsw)) | |
6fd0fcc9 | 415 | return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION); |
48a3e950 CH |
416 | return 0; |
417 | } | |
418 | ||
419 | static int handle_lpswe(struct kvm_vcpu *vcpu) | |
420 | { | |
48a3e950 | 421 | psw_t new_psw; |
3736b874 | 422 | u64 addr; |
2d8bcaed | 423 | int rc; |
48a3e950 | 424 | |
5087dfa6 TH |
425 | if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE) |
426 | return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OP); | |
427 | ||
48a3e950 | 428 | addr = kvm_s390_get_base_disp_s(vcpu); |
6fd0fcc9 HC |
429 | if (addr & 7) |
430 | return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION); | |
2d8bcaed HC |
431 | rc = read_guest(vcpu, addr, &new_psw, sizeof(new_psw)); |
432 | if (rc) | |
433 | return kvm_s390_inject_prog_cond(vcpu, rc); | |
3736b874 HC |
434 | vcpu->arch.sie_block->gpsw = new_psw; |
435 | if (!is_valid_psw(&vcpu->arch.sie_block->gpsw)) | |
6fd0fcc9 | 436 | return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION); |
48a3e950 CH |
437 | return 0; |
438 | } | |
439 | ||
453423dc CB |
440 | static int handle_stidp(struct kvm_vcpu *vcpu) |
441 | { | |
7d777d78 | 442 | u64 stidp_data = vcpu->arch.stidp_data; |
453423dc | 443 | u64 operand2; |
7d777d78 | 444 | int rc; |
453423dc CB |
445 | |
446 | vcpu->stat.instruction_stidp++; | |
b1c571a5 | 447 | |
5087dfa6 TH |
448 | if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE) |
449 | return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OP); | |
450 | ||
b1c571a5 | 451 | operand2 = kvm_s390_get_base_disp_s(vcpu); |
453423dc | 452 | |
db4a29cb HC |
453 | if (operand2 & 7) |
454 | return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION); | |
453423dc | 455 | |
7d777d78 HC |
456 | rc = write_guest(vcpu, operand2, &stidp_data, sizeof(stidp_data)); |
457 | if (rc) | |
458 | return kvm_s390_inject_prog_cond(vcpu, rc); | |
453423dc CB |
459 | |
460 | VCPU_EVENT(vcpu, 5, "%s", "store cpu id"); | |
453423dc CB |
461 | return 0; |
462 | } | |
463 | ||
464 | static void handle_stsi_3_2_2(struct kvm_vcpu *vcpu, struct sysinfo_3_2_2 *mem) | |
465 | { | |
453423dc CB |
466 | int cpus = 0; |
467 | int n; | |
468 | ||
ff520a63 | 469 | cpus = atomic_read(&vcpu->kvm->online_vcpus); |
453423dc CB |
470 | |
471 | /* deal with other level 3 hypervisors */ | |
caf757c6 | 472 | if (stsi(mem, 3, 2, 2)) |
453423dc CB |
473 | mem->count = 0; |
474 | if (mem->count < 8) | |
475 | mem->count++; | |
476 | for (n = mem->count - 1; n > 0 ; n--) | |
477 | memcpy(&mem->vm[n], &mem->vm[n - 1], sizeof(mem->vm[0])); | |
478 | ||
b75f4c9a | 479 | memset(&mem->vm[0], 0, sizeof(mem->vm[0])); |
453423dc CB |
480 | mem->vm[0].cpus_total = cpus; |
481 | mem->vm[0].cpus_configured = cpus; | |
482 | mem->vm[0].cpus_standby = 0; | |
483 | mem->vm[0].cpus_reserved = 0; | |
484 | mem->vm[0].caf = 1000; | |
485 | memcpy(mem->vm[0].name, "KVMguest", 8); | |
486 | ASCEBC(mem->vm[0].name, 8); | |
487 | memcpy(mem->vm[0].cpi, "KVM/Linux ", 16); | |
488 | ASCEBC(mem->vm[0].cpi, 16); | |
489 | } | |
490 | ||
491 | static int handle_stsi(struct kvm_vcpu *vcpu) | |
492 | { | |
5a32c1af CB |
493 | int fc = (vcpu->run->s.regs.gprs[0] & 0xf0000000) >> 28; |
494 | int sel1 = vcpu->run->s.regs.gprs[0] & 0xff; | |
495 | int sel2 = vcpu->run->s.regs.gprs[1] & 0xffff; | |
c51f068c | 496 | unsigned long mem = 0; |
453423dc | 497 | u64 operand2; |
db4a29cb | 498 | int rc = 0; |
453423dc CB |
499 | |
500 | vcpu->stat.instruction_stsi++; | |
501 | VCPU_EVENT(vcpu, 4, "stsi: fc: %x sel1: %x sel2: %x", fc, sel1, sel2); | |
502 | ||
5087dfa6 TH |
503 | if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE) |
504 | return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OP); | |
505 | ||
87d41fb4 | 506 | if (fc > 3) { |
ea828ebf | 507 | kvm_s390_set_psw_cc(vcpu, 3); |
87d41fb4 TH |
508 | return 0; |
509 | } | |
453423dc | 510 | |
87d41fb4 TH |
511 | if (vcpu->run->s.regs.gprs[0] & 0x0fffff00 |
512 | || vcpu->run->s.regs.gprs[1] & 0xffff0000) | |
453423dc CB |
513 | return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION); |
514 | ||
87d41fb4 | 515 | if (fc == 0) { |
5a32c1af | 516 | vcpu->run->s.regs.gprs[0] = 3 << 28; |
ea828ebf | 517 | kvm_s390_set_psw_cc(vcpu, 0); |
453423dc | 518 | return 0; |
87d41fb4 TH |
519 | } |
520 | ||
521 | operand2 = kvm_s390_get_base_disp_s(vcpu); | |
522 | ||
523 | if (operand2 & 0xfff) | |
524 | return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION); | |
525 | ||
526 | switch (fc) { | |
453423dc CB |
527 | case 1: /* same handling for 1 and 2 */ |
528 | case 2: | |
529 | mem = get_zeroed_page(GFP_KERNEL); | |
530 | if (!mem) | |
c51f068c | 531 | goto out_no_data; |
caf757c6 | 532 | if (stsi((void *) mem, fc, sel1, sel2)) |
c51f068c | 533 | goto out_no_data; |
453423dc CB |
534 | break; |
535 | case 3: | |
536 | if (sel1 != 2 || sel2 != 2) | |
c51f068c | 537 | goto out_no_data; |
453423dc CB |
538 | mem = get_zeroed_page(GFP_KERNEL); |
539 | if (!mem) | |
c51f068c | 540 | goto out_no_data; |
453423dc CB |
541 | handle_stsi_3_2_2(vcpu, (void *) mem); |
542 | break; | |
453423dc CB |
543 | } |
544 | ||
645c5bc1 HC |
545 | rc = write_guest(vcpu, operand2, (void *)mem, PAGE_SIZE); |
546 | if (rc) { | |
547 | rc = kvm_s390_inject_prog_cond(vcpu, rc); | |
548 | goto out; | |
453423dc | 549 | } |
5786fffa | 550 | trace_kvm_s390_handle_stsi(vcpu, fc, sel1, sel2, operand2); |
453423dc | 551 | free_page(mem); |
ea828ebf | 552 | kvm_s390_set_psw_cc(vcpu, 0); |
5a32c1af | 553 | vcpu->run->s.regs.gprs[0] = 0; |
453423dc | 554 | return 0; |
c51f068c | 555 | out_no_data: |
ea828ebf | 556 | kvm_s390_set_psw_cc(vcpu, 3); |
645c5bc1 | 557 | out: |
c51f068c | 558 | free_page(mem); |
db4a29cb | 559 | return rc; |
453423dc CB |
560 | } |
561 | ||
f379aae5 | 562 | static const intercept_handler_t b2_handlers[256] = { |
453423dc | 563 | [0x02] = handle_stidp, |
6a3f95a6 | 564 | [0x04] = handle_set_clock, |
453423dc CB |
565 | [0x10] = handle_set_prefix, |
566 | [0x11] = handle_store_prefix, | |
567 | [0x12] = handle_store_cpu_address, | |
8a242234 | 568 | [0x21] = handle_ipte_interlock, |
453423dc CB |
569 | [0x29] = handle_skey, |
570 | [0x2a] = handle_skey, | |
571 | [0x2b] = handle_skey, | |
aca84241 | 572 | [0x2c] = handle_test_block, |
f379aae5 CH |
573 | [0x30] = handle_io_inst, |
574 | [0x31] = handle_io_inst, | |
575 | [0x32] = handle_io_inst, | |
576 | [0x33] = handle_io_inst, | |
577 | [0x34] = handle_io_inst, | |
578 | [0x35] = handle_io_inst, | |
579 | [0x36] = handle_io_inst, | |
580 | [0x37] = handle_io_inst, | |
581 | [0x38] = handle_io_inst, | |
582 | [0x39] = handle_io_inst, | |
583 | [0x3a] = handle_io_inst, | |
584 | [0x3b] = handle_io_inst, | |
585 | [0x3c] = handle_io_inst, | |
8a242234 | 586 | [0x50] = handle_ipte_interlock, |
f379aae5 CH |
587 | [0x5f] = handle_io_inst, |
588 | [0x74] = handle_io_inst, | |
589 | [0x76] = handle_io_inst, | |
453423dc CB |
590 | [0x7d] = handle_stsi, |
591 | [0xb1] = handle_stfl, | |
48a3e950 | 592 | [0xb2] = handle_lpswe, |
453423dc CB |
593 | }; |
594 | ||
70455a36 | 595 | int kvm_s390_handle_b2(struct kvm_vcpu *vcpu) |
453423dc CB |
596 | { |
597 | intercept_handler_t handler; | |
598 | ||
70455a36 | 599 | /* |
5087dfa6 TH |
600 | * A lot of B2 instructions are priviledged. Here we check for |
601 | * the privileged ones, that we can handle in the kernel. | |
602 | * Anything else goes to userspace. | |
603 | */ | |
f379aae5 | 604 | handler = b2_handlers[vcpu->arch.sie_block->ipa & 0x00ff]; |
5087dfa6 TH |
605 | if (handler) |
606 | return handler(vcpu); | |
607 | ||
b8e660b8 | 608 | return -EOPNOTSUPP; |
453423dc | 609 | } |
bb25b9ba | 610 | |
48a3e950 CH |
611 | static int handle_epsw(struct kvm_vcpu *vcpu) |
612 | { | |
613 | int reg1, reg2; | |
614 | ||
aeb87c3c | 615 | kvm_s390_get_regs_rre(vcpu, ®1, ®2); |
48a3e950 CH |
616 | |
617 | /* This basically extracts the mask half of the psw. */ | |
843200e7 | 618 | vcpu->run->s.regs.gprs[reg1] &= 0xffffffff00000000UL; |
48a3e950 CH |
619 | vcpu->run->s.regs.gprs[reg1] |= vcpu->arch.sie_block->gpsw.mask >> 32; |
620 | if (reg2) { | |
843200e7 | 621 | vcpu->run->s.regs.gprs[reg2] &= 0xffffffff00000000UL; |
48a3e950 | 622 | vcpu->run->s.regs.gprs[reg2] |= |
843200e7 | 623 | vcpu->arch.sie_block->gpsw.mask & 0x00000000ffffffffUL; |
48a3e950 CH |
624 | } |
625 | return 0; | |
626 | } | |
627 | ||
69d0d3a3 CB |
628 | #define PFMF_RESERVED 0xfffc0101UL |
629 | #define PFMF_SK 0x00020000UL | |
630 | #define PFMF_CF 0x00010000UL | |
631 | #define PFMF_UI 0x00008000UL | |
632 | #define PFMF_FSC 0x00007000UL | |
633 | #define PFMF_NQ 0x00000800UL | |
634 | #define PFMF_MR 0x00000400UL | |
635 | #define PFMF_MC 0x00000200UL | |
636 | #define PFMF_KEY 0x000000feUL | |
637 | ||
638 | static int handle_pfmf(struct kvm_vcpu *vcpu) | |
639 | { | |
640 | int reg1, reg2; | |
641 | unsigned long start, end; | |
642 | ||
643 | vcpu->stat.instruction_pfmf++; | |
644 | ||
645 | kvm_s390_get_regs_rre(vcpu, ®1, ®2); | |
646 | ||
647 | if (!MACHINE_HAS_PFMF) | |
648 | return kvm_s390_inject_program_int(vcpu, PGM_OPERATION); | |
649 | ||
650 | if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE) | |
208dd756 | 651 | return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OP); |
69d0d3a3 CB |
652 | |
653 | if (vcpu->run->s.regs.gprs[reg1] & PFMF_RESERVED) | |
654 | return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION); | |
655 | ||
656 | /* Only provide non-quiescing support if the host supports it */ | |
e769ece3 | 657 | if (vcpu->run->s.regs.gprs[reg1] & PFMF_NQ && !test_facility(14)) |
69d0d3a3 CB |
658 | return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION); |
659 | ||
660 | /* No support for conditional-SSKE */ | |
661 | if (vcpu->run->s.regs.gprs[reg1] & (PFMF_MR | PFMF_MC)) | |
662 | return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION); | |
663 | ||
664 | start = vcpu->run->s.regs.gprs[reg2] & PAGE_MASK; | |
a02689fe | 665 | start = kvm_s390_logical_to_effective(vcpu, start); |
fb34c603 | 666 | |
69d0d3a3 CB |
667 | switch (vcpu->run->s.regs.gprs[reg1] & PFMF_FSC) { |
668 | case 0x00000000: | |
669 | end = (start + (1UL << 12)) & ~((1UL << 12) - 1); | |
670 | break; | |
671 | case 0x00001000: | |
672 | end = (start + (1UL << 20)) & ~((1UL << 20) - 1); | |
673 | break; | |
674 | /* We dont support EDAT2 | |
675 | case 0x00002000: | |
676 | end = (start + (1UL << 31)) & ~((1UL << 31) - 1); | |
677 | break;*/ | |
678 | default: | |
679 | return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION); | |
680 | } | |
a02689fe TH |
681 | |
682 | if (vcpu->run->s.regs.gprs[reg1] & PFMF_CF) { | |
dd9e5b7b | 683 | if (kvm_s390_check_low_addr_prot_real(vcpu, start)) |
a02689fe TH |
684 | return kvm_s390_inject_prog_irq(vcpu, &vcpu->arch.pgm); |
685 | } | |
686 | ||
69d0d3a3 | 687 | while (start < end) { |
fb34c603 TH |
688 | unsigned long useraddr, abs_addr; |
689 | ||
690 | /* Translate guest address to host address */ | |
691 | if ((vcpu->run->s.regs.gprs[reg1] & PFMF_FSC) == 0) | |
692 | abs_addr = kvm_s390_real_to_abs(vcpu, start); | |
693 | else | |
694 | abs_addr = start; | |
695 | useraddr = gfn_to_hva(vcpu->kvm, gpa_to_gfn(abs_addr)); | |
696 | if (kvm_is_error_hva(useraddr)) | |
69d0d3a3 CB |
697 | return kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING); |
698 | ||
699 | if (vcpu->run->s.regs.gprs[reg1] & PFMF_CF) { | |
700 | if (clear_user((void __user *)useraddr, PAGE_SIZE)) | |
701 | return kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING); | |
702 | } | |
703 | ||
704 | if (vcpu->run->s.regs.gprs[reg1] & PFMF_SK) { | |
3ac8e380 DD |
705 | int rc = __skey_check_enable(vcpu); |
706 | ||
707 | if (rc) | |
708 | return rc; | |
69d0d3a3 CB |
709 | if (set_guest_storage_key(current->mm, useraddr, |
710 | vcpu->run->s.regs.gprs[reg1] & PFMF_KEY, | |
711 | vcpu->run->s.regs.gprs[reg1] & PFMF_NQ)) | |
712 | return kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING); | |
713 | } | |
714 | ||
715 | start += PAGE_SIZE; | |
716 | } | |
717 | if (vcpu->run->s.regs.gprs[reg1] & PFMF_FSC) | |
718 | vcpu->run->s.regs.gprs[reg2] = end; | |
719 | return 0; | |
720 | } | |
721 | ||
b31288fa KW |
722 | static int handle_essa(struct kvm_vcpu *vcpu) |
723 | { | |
724 | /* entries expected to be 1FF */ | |
725 | int entries = (vcpu->arch.sie_block->cbrlo & ~PAGE_MASK) >> 3; | |
726 | unsigned long *cbrlo, cbrle; | |
727 | struct gmap *gmap; | |
728 | int i; | |
729 | ||
730 | VCPU_EVENT(vcpu, 5, "cmma release %d pages", entries); | |
731 | gmap = vcpu->arch.gmap; | |
732 | vcpu->stat.instruction_essa++; | |
b31605c1 | 733 | if (!kvm_s390_cmma_enabled(vcpu->kvm)) |
b31288fa KW |
734 | return kvm_s390_inject_program_int(vcpu, PGM_OPERATION); |
735 | ||
736 | if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE) | |
737 | return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OP); | |
738 | ||
739 | if (((vcpu->arch.sie_block->ipb & 0xf0000000) >> 28) > 6) | |
740 | return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION); | |
741 | ||
742 | /* Rewind PSW to repeat the ESSA instruction */ | |
04b41acd | 743 | kvm_s390_rewind_psw(vcpu, 4); |
b31288fa KW |
744 | vcpu->arch.sie_block->cbrlo &= PAGE_MASK; /* reset nceo */ |
745 | cbrlo = phys_to_virt(vcpu->arch.sie_block->cbrlo); | |
746 | down_read(&gmap->mm->mmap_sem); | |
747 | for (i = 0; i < entries; ++i) { | |
748 | cbrle = cbrlo[i]; | |
749 | if (unlikely(cbrle & ~PAGE_MASK || cbrle < 2 * PAGE_SIZE)) | |
750 | /* invalid entry */ | |
751 | break; | |
752 | /* try to free backing */ | |
6e0a0431 | 753 | __gmap_zap(gmap, cbrle); |
b31288fa KW |
754 | } |
755 | up_read(&gmap->mm->mmap_sem); | |
756 | if (i < entries) | |
757 | return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION); | |
758 | return 0; | |
759 | } | |
760 | ||
48a3e950 | 761 | static const intercept_handler_t b9_handlers[256] = { |
8a242234 | 762 | [0x8a] = handle_ipte_interlock, |
48a3e950 | 763 | [0x8d] = handle_epsw, |
8a242234 HC |
764 | [0x8e] = handle_ipte_interlock, |
765 | [0x8f] = handle_ipte_interlock, | |
b31288fa | 766 | [0xab] = handle_essa, |
69d0d3a3 | 767 | [0xaf] = handle_pfmf, |
48a3e950 CH |
768 | }; |
769 | ||
770 | int kvm_s390_handle_b9(struct kvm_vcpu *vcpu) | |
771 | { | |
772 | intercept_handler_t handler; | |
773 | ||
774 | /* This is handled just as for the B2 instructions. */ | |
775 | handler = b9_handlers[vcpu->arch.sie_block->ipa & 0x00ff]; | |
5087dfa6 TH |
776 | if (handler) |
777 | return handler(vcpu); | |
778 | ||
48a3e950 CH |
779 | return -EOPNOTSUPP; |
780 | } | |
781 | ||
953ed88d TH |
782 | int kvm_s390_handle_lctl(struct kvm_vcpu *vcpu) |
783 | { | |
784 | int reg1 = (vcpu->arch.sie_block->ipa & 0x00f0) >> 4; | |
785 | int reg3 = vcpu->arch.sie_block->ipa & 0x000f; | |
fc56eb66 HC |
786 | int reg, rc, nr_regs; |
787 | u32 ctl_array[16]; | |
f987a3ee | 788 | u64 ga; |
953ed88d TH |
789 | |
790 | vcpu->stat.instruction_lctl++; | |
791 | ||
792 | if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE) | |
793 | return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OP); | |
794 | ||
f987a3ee | 795 | ga = kvm_s390_get_base_disp_rs(vcpu); |
953ed88d | 796 | |
f987a3ee | 797 | if (ga & 3) |
953ed88d TH |
798 | return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION); |
799 | ||
f987a3ee HC |
800 | VCPU_EVENT(vcpu, 5, "lctl r1:%x, r3:%x, addr:%llx", reg1, reg3, ga); |
801 | trace_kvm_s390_handle_lctl(vcpu, 0, reg1, reg3, ga); | |
953ed88d | 802 | |
fc56eb66 HC |
803 | nr_regs = ((reg3 - reg1) & 0xf) + 1; |
804 | rc = read_guest(vcpu, ga, ctl_array, nr_regs * sizeof(u32)); | |
805 | if (rc) | |
806 | return kvm_s390_inject_prog_cond(vcpu, rc); | |
953ed88d | 807 | reg = reg1; |
fc56eb66 | 808 | nr_regs = 0; |
953ed88d | 809 | do { |
953ed88d | 810 | vcpu->arch.sie_block->gcr[reg] &= 0xffffffff00000000ul; |
fc56eb66 | 811 | vcpu->arch.sie_block->gcr[reg] |= ctl_array[nr_regs++]; |
953ed88d TH |
812 | if (reg == reg3) |
813 | break; | |
814 | reg = (reg + 1) % 16; | |
815 | } while (1); | |
2dca485f | 816 | kvm_make_request(KVM_REQ_TLB_FLUSH, vcpu); |
953ed88d TH |
817 | return 0; |
818 | } | |
819 | ||
aba07508 DH |
820 | int kvm_s390_handle_stctl(struct kvm_vcpu *vcpu) |
821 | { | |
822 | int reg1 = (vcpu->arch.sie_block->ipa & 0x00f0) >> 4; | |
823 | int reg3 = vcpu->arch.sie_block->ipa & 0x000f; | |
fc56eb66 HC |
824 | int reg, rc, nr_regs; |
825 | u32 ctl_array[16]; | |
aba07508 | 826 | u64 ga; |
aba07508 DH |
827 | |
828 | vcpu->stat.instruction_stctl++; | |
829 | ||
830 | if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE) | |
831 | return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OP); | |
832 | ||
833 | ga = kvm_s390_get_base_disp_rs(vcpu); | |
834 | ||
835 | if (ga & 3) | |
836 | return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION); | |
837 | ||
838 | VCPU_EVENT(vcpu, 5, "stctl r1:%x, r3:%x, addr:%llx", reg1, reg3, ga); | |
839 | trace_kvm_s390_handle_stctl(vcpu, 0, reg1, reg3, ga); | |
840 | ||
841 | reg = reg1; | |
fc56eb66 | 842 | nr_regs = 0; |
aba07508 | 843 | do { |
fc56eb66 | 844 | ctl_array[nr_regs++] = vcpu->arch.sie_block->gcr[reg]; |
aba07508 DH |
845 | if (reg == reg3) |
846 | break; | |
847 | reg = (reg + 1) % 16; | |
848 | } while (1); | |
fc56eb66 HC |
849 | rc = write_guest(vcpu, ga, ctl_array, nr_regs * sizeof(u32)); |
850 | return rc ? kvm_s390_inject_prog_cond(vcpu, rc) : 0; | |
aba07508 DH |
851 | } |
852 | ||
953ed88d TH |
853 | static int handle_lctlg(struct kvm_vcpu *vcpu) |
854 | { | |
855 | int reg1 = (vcpu->arch.sie_block->ipa & 0x00f0) >> 4; | |
856 | int reg3 = vcpu->arch.sie_block->ipa & 0x000f; | |
fc56eb66 HC |
857 | int reg, rc, nr_regs; |
858 | u64 ctl_array[16]; | |
859 | u64 ga; | |
953ed88d TH |
860 | |
861 | vcpu->stat.instruction_lctlg++; | |
862 | ||
863 | if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE) | |
864 | return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OP); | |
865 | ||
f987a3ee | 866 | ga = kvm_s390_get_base_disp_rsy(vcpu); |
953ed88d | 867 | |
f987a3ee | 868 | if (ga & 7) |
953ed88d TH |
869 | return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION); |
870 | ||
f987a3ee HC |
871 | VCPU_EVENT(vcpu, 5, "lctlg r1:%x, r3:%x, addr:%llx", reg1, reg3, ga); |
872 | trace_kvm_s390_handle_lctl(vcpu, 1, reg1, reg3, ga); | |
953ed88d | 873 | |
fc56eb66 HC |
874 | nr_regs = ((reg3 - reg1) & 0xf) + 1; |
875 | rc = read_guest(vcpu, ga, ctl_array, nr_regs * sizeof(u64)); | |
876 | if (rc) | |
877 | return kvm_s390_inject_prog_cond(vcpu, rc); | |
878 | reg = reg1; | |
879 | nr_regs = 0; | |
953ed88d | 880 | do { |
fc56eb66 | 881 | vcpu->arch.sie_block->gcr[reg] = ctl_array[nr_regs++]; |
953ed88d TH |
882 | if (reg == reg3) |
883 | break; | |
884 | reg = (reg + 1) % 16; | |
885 | } while (1); | |
2dca485f | 886 | kvm_make_request(KVM_REQ_TLB_FLUSH, vcpu); |
953ed88d TH |
887 | return 0; |
888 | } | |
889 | ||
aba07508 DH |
890 | static int handle_stctg(struct kvm_vcpu *vcpu) |
891 | { | |
892 | int reg1 = (vcpu->arch.sie_block->ipa & 0x00f0) >> 4; | |
893 | int reg3 = vcpu->arch.sie_block->ipa & 0x000f; | |
fc56eb66 HC |
894 | int reg, rc, nr_regs; |
895 | u64 ctl_array[16]; | |
896 | u64 ga; | |
aba07508 DH |
897 | |
898 | vcpu->stat.instruction_stctg++; | |
899 | ||
900 | if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE) | |
901 | return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OP); | |
902 | ||
903 | ga = kvm_s390_get_base_disp_rsy(vcpu); | |
904 | ||
905 | if (ga & 7) | |
906 | return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION); | |
907 | ||
aba07508 DH |
908 | VCPU_EVENT(vcpu, 5, "stctg r1:%x, r3:%x, addr:%llx", reg1, reg3, ga); |
909 | trace_kvm_s390_handle_stctl(vcpu, 1, reg1, reg3, ga); | |
910 | ||
fc56eb66 HC |
911 | reg = reg1; |
912 | nr_regs = 0; | |
aba07508 | 913 | do { |
fc56eb66 | 914 | ctl_array[nr_regs++] = vcpu->arch.sie_block->gcr[reg]; |
aba07508 DH |
915 | if (reg == reg3) |
916 | break; | |
917 | reg = (reg + 1) % 16; | |
918 | } while (1); | |
fc56eb66 HC |
919 | rc = write_guest(vcpu, ga, ctl_array, nr_regs * sizeof(u64)); |
920 | return rc ? kvm_s390_inject_prog_cond(vcpu, rc) : 0; | |
aba07508 DH |
921 | } |
922 | ||
f379aae5 | 923 | static const intercept_handler_t eb_handlers[256] = { |
953ed88d | 924 | [0x2f] = handle_lctlg, |
aba07508 | 925 | [0x25] = handle_stctg, |
f379aae5 CH |
926 | }; |
927 | ||
953ed88d | 928 | int kvm_s390_handle_eb(struct kvm_vcpu *vcpu) |
f379aae5 CH |
929 | { |
930 | intercept_handler_t handler; | |
931 | ||
f379aae5 CH |
932 | handler = eb_handlers[vcpu->arch.sie_block->ipb & 0xff]; |
933 | if (handler) | |
934 | return handler(vcpu); | |
935 | return -EOPNOTSUPP; | |
936 | } | |
937 | ||
bb25b9ba CB |
938 | static int handle_tprot(struct kvm_vcpu *vcpu) |
939 | { | |
b1c571a5 | 940 | u64 address1, address2; |
a0465f9a TH |
941 | unsigned long hva, gpa; |
942 | int ret = 0, cc = 0; | |
943 | bool writable; | |
bb25b9ba CB |
944 | |
945 | vcpu->stat.instruction_tprot++; | |
946 | ||
f9f6bbc6 TH |
947 | if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE) |
948 | return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OP); | |
949 | ||
b1c571a5 CH |
950 | kvm_s390_get_base_disp_sse(vcpu, &address1, &address2); |
951 | ||
bb25b9ba CB |
952 | /* we only handle the Linux memory detection case: |
953 | * access key == 0 | |
bb25b9ba CB |
954 | * everything else goes to userspace. */ |
955 | if (address2 & 0xf0) | |
956 | return -EOPNOTSUPP; | |
957 | if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_DAT) | |
a0465f9a TH |
958 | ipte_lock(vcpu); |
959 | ret = guest_translate_address(vcpu, address1, &gpa, 1); | |
960 | if (ret == PGM_PROTECTION) { | |
961 | /* Write protected? Try again with read-only... */ | |
962 | cc = 1; | |
963 | ret = guest_translate_address(vcpu, address1, &gpa, 0); | |
964 | } | |
965 | if (ret) { | |
966 | if (ret == PGM_ADDRESSING || ret == PGM_TRANSLATION_SPEC) { | |
967 | ret = kvm_s390_inject_program_int(vcpu, ret); | |
968 | } else if (ret > 0) { | |
969 | /* Translation not available */ | |
970 | kvm_s390_set_psw_cc(vcpu, 3); | |
971 | ret = 0; | |
972 | } | |
973 | goto out_unlock; | |
974 | } | |
59a1fa2d | 975 | |
a0465f9a TH |
976 | hva = gfn_to_hva_prot(vcpu->kvm, gpa_to_gfn(gpa), &writable); |
977 | if (kvm_is_error_hva(hva)) { | |
978 | ret = kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING); | |
979 | } else { | |
980 | if (!writable) | |
981 | cc = 1; /* Write not permitted ==> read-only */ | |
982 | kvm_s390_set_psw_cc(vcpu, cc); | |
983 | /* Note: CC2 only occurs for storage keys (not supported yet) */ | |
984 | } | |
985 | out_unlock: | |
986 | if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_DAT) | |
987 | ipte_unlock(vcpu); | |
988 | return ret; | |
bb25b9ba CB |
989 | } |
990 | ||
991 | int kvm_s390_handle_e5(struct kvm_vcpu *vcpu) | |
992 | { | |
993 | /* For e5xx... instructions we only handle TPROT */ | |
994 | if ((vcpu->arch.sie_block->ipa & 0x00ff) == 0x01) | |
995 | return handle_tprot(vcpu); | |
996 | return -EOPNOTSUPP; | |
997 | } | |
998 | ||
8c3f61e2 CH |
999 | static int handle_sckpf(struct kvm_vcpu *vcpu) |
1000 | { | |
1001 | u32 value; | |
1002 | ||
1003 | if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE) | |
208dd756 | 1004 | return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OP); |
8c3f61e2 CH |
1005 | |
1006 | if (vcpu->run->s.regs.gprs[0] & 0x00000000ffff0000) | |
1007 | return kvm_s390_inject_program_int(vcpu, | |
1008 | PGM_SPECIFICATION); | |
1009 | ||
1010 | value = vcpu->run->s.regs.gprs[0] & 0x000000000000ffff; | |
1011 | vcpu->arch.sie_block->todpr = value; | |
1012 | ||
1013 | return 0; | |
1014 | } | |
1015 | ||
77975357 | 1016 | static const intercept_handler_t x01_handlers[256] = { |
8c3f61e2 CH |
1017 | [0x07] = handle_sckpf, |
1018 | }; | |
1019 | ||
1020 | int kvm_s390_handle_01(struct kvm_vcpu *vcpu) | |
1021 | { | |
1022 | intercept_handler_t handler; | |
1023 | ||
1024 | handler = x01_handlers[vcpu->arch.sie_block->ipa & 0x00ff]; | |
1025 | if (handler) | |
1026 | return handler(vcpu); | |
1027 | return -EOPNOTSUPP; | |
1028 | } |