2 * handling kvm guest interrupts
4 * Copyright IBM Corp. 2008, 2015
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.
10 * Author(s): Carsten Otte <cotte@de.ibm.com>
13 #include <linux/interrupt.h>
14 #include <linux/kvm_host.h>
15 #include <linux/hrtimer.h>
16 #include <linux/mmu_context.h>
17 #include <linux/signal.h>
18 #include <linux/slab.h>
19 #include <linux/bitmap.h>
20 #include <linux/vmalloc.h>
21 #include <asm/asm-offsets.h>
23 #include <linux/uaccess.h>
27 #include <asm/switch_to.h>
31 #include "trace-s390.h"
33 #define PFAULT_INIT 0x0600
34 #define PFAULT_DONE 0x0680
35 #define VIRTIO_PARAM 0x0d00
37 /* handle external calls via sigp interpretation facility */
38 static int sca_ext_call_pending(struct kvm_vcpu
*vcpu
, int *src_id
)
42 if (!(atomic_read(&vcpu
->arch
.sie_block
->cpuflags
) & CPUSTAT_ECALL_PEND
))
45 BUG_ON(!kvm_s390_use_sca_entries());
46 read_lock(&vcpu
->kvm
->arch
.sca_lock
);
47 if (vcpu
->kvm
->arch
.use_esca
) {
48 struct esca_block
*sca
= vcpu
->kvm
->arch
.sca
;
49 union esca_sigp_ctrl sigp_ctrl
=
50 sca
->cpu
[vcpu
->vcpu_id
].sigp_ctrl
;
55 struct bsca_block
*sca
= vcpu
->kvm
->arch
.sca
;
56 union bsca_sigp_ctrl sigp_ctrl
=
57 sca
->cpu
[vcpu
->vcpu_id
].sigp_ctrl
;
62 read_unlock(&vcpu
->kvm
->arch
.sca_lock
);
70 static int sca_inject_ext_call(struct kvm_vcpu
*vcpu
, int src_id
)
74 BUG_ON(!kvm_s390_use_sca_entries());
75 read_lock(&vcpu
->kvm
->arch
.sca_lock
);
76 if (vcpu
->kvm
->arch
.use_esca
) {
77 struct esca_block
*sca
= vcpu
->kvm
->arch
.sca
;
78 union esca_sigp_ctrl
*sigp_ctrl
=
79 &(sca
->cpu
[vcpu
->vcpu_id
].sigp_ctrl
);
80 union esca_sigp_ctrl new_val
= {0}, old_val
= *sigp_ctrl
;
86 expect
= old_val
.value
;
87 rc
= cmpxchg(&sigp_ctrl
->value
, old_val
.value
, new_val
.value
);
89 struct bsca_block
*sca
= vcpu
->kvm
->arch
.sca
;
90 union bsca_sigp_ctrl
*sigp_ctrl
=
91 &(sca
->cpu
[vcpu
->vcpu_id
].sigp_ctrl
);
92 union bsca_sigp_ctrl new_val
= {0}, old_val
= *sigp_ctrl
;
98 expect
= old_val
.value
;
99 rc
= cmpxchg(&sigp_ctrl
->value
, old_val
.value
, new_val
.value
);
101 read_unlock(&vcpu
->kvm
->arch
.sca_lock
);
104 /* another external call is pending */
107 atomic_or(CPUSTAT_ECALL_PEND
, &vcpu
->arch
.sie_block
->cpuflags
);
111 static void sca_clear_ext_call(struct kvm_vcpu
*vcpu
)
113 struct kvm_s390_local_interrupt
*li
= &vcpu
->arch
.local_int
;
116 if (!kvm_s390_use_sca_entries())
118 atomic_andnot(CPUSTAT_ECALL_PEND
, li
->cpuflags
);
119 read_lock(&vcpu
->kvm
->arch
.sca_lock
);
120 if (vcpu
->kvm
->arch
.use_esca
) {
121 struct esca_block
*sca
= vcpu
->kvm
->arch
.sca
;
122 union esca_sigp_ctrl
*sigp_ctrl
=
123 &(sca
->cpu
[vcpu
->vcpu_id
].sigp_ctrl
);
124 union esca_sigp_ctrl old
= *sigp_ctrl
;
127 rc
= cmpxchg(&sigp_ctrl
->value
, old
.value
, 0);
129 struct bsca_block
*sca
= vcpu
->kvm
->arch
.sca
;
130 union bsca_sigp_ctrl
*sigp_ctrl
=
131 &(sca
->cpu
[vcpu
->vcpu_id
].sigp_ctrl
);
132 union bsca_sigp_ctrl old
= *sigp_ctrl
;
135 rc
= cmpxchg(&sigp_ctrl
->value
, old
.value
, 0);
137 read_unlock(&vcpu
->kvm
->arch
.sca_lock
);
138 WARN_ON(rc
!= expect
); /* cannot clear? */
141 int psw_extint_disabled(struct kvm_vcpu
*vcpu
)
143 return !(vcpu
->arch
.sie_block
->gpsw
.mask
& PSW_MASK_EXT
);
146 static int psw_ioint_disabled(struct kvm_vcpu
*vcpu
)
148 return !(vcpu
->arch
.sie_block
->gpsw
.mask
& PSW_MASK_IO
);
151 static int psw_mchk_disabled(struct kvm_vcpu
*vcpu
)
153 return !(vcpu
->arch
.sie_block
->gpsw
.mask
& PSW_MASK_MCHECK
);
156 static int psw_interrupts_disabled(struct kvm_vcpu
*vcpu
)
158 return psw_extint_disabled(vcpu
) &&
159 psw_ioint_disabled(vcpu
) &&
160 psw_mchk_disabled(vcpu
);
163 static int ckc_interrupts_enabled(struct kvm_vcpu
*vcpu
)
165 if (psw_extint_disabled(vcpu
) ||
166 !(vcpu
->arch
.sie_block
->gcr
[0] & 0x800ul
))
168 if (guestdbg_enabled(vcpu
) && guestdbg_sstep_enabled(vcpu
))
169 /* No timer interrupts when single stepping */
174 static int ckc_irq_pending(struct kvm_vcpu
*vcpu
)
176 if (vcpu
->arch
.sie_block
->ckc
>= kvm_s390_get_tod_clock_fast(vcpu
->kvm
))
178 return ckc_interrupts_enabled(vcpu
);
181 static int cpu_timer_interrupts_enabled(struct kvm_vcpu
*vcpu
)
183 return !psw_extint_disabled(vcpu
) &&
184 (vcpu
->arch
.sie_block
->gcr
[0] & 0x400ul
);
187 static int cpu_timer_irq_pending(struct kvm_vcpu
*vcpu
)
189 if (!cpu_timer_interrupts_enabled(vcpu
))
191 return kvm_s390_get_cpu_timer(vcpu
) >> 63;
194 static inline int is_ioirq(unsigned long irq_type
)
196 return ((irq_type
>= IRQ_PEND_IO_ISC_0
) &&
197 (irq_type
<= IRQ_PEND_IO_ISC_7
));
200 static uint64_t isc_to_isc_bits(int isc
)
202 return (0x80 >> isc
) << 24;
205 static inline u8
int_word_to_isc(u32 int_word
)
207 return (int_word
& 0x38000000) >> 27;
210 static inline unsigned long pending_irqs(struct kvm_vcpu
*vcpu
)
212 return vcpu
->kvm
->arch
.float_int
.pending_irqs
|
213 vcpu
->arch
.local_int
.pending_irqs
;
216 static unsigned long disable_iscs(struct kvm_vcpu
*vcpu
,
217 unsigned long active_mask
)
221 for (i
= 0; i
<= MAX_ISC
; i
++)
222 if (!(vcpu
->arch
.sie_block
->gcr
[6] & isc_to_isc_bits(i
)))
223 active_mask
&= ~(1UL << (IRQ_PEND_IO_ISC_0
+ i
));
228 static unsigned long deliverable_irqs(struct kvm_vcpu
*vcpu
)
230 unsigned long active_mask
;
232 active_mask
= pending_irqs(vcpu
);
236 if (psw_extint_disabled(vcpu
))
237 active_mask
&= ~IRQ_PEND_EXT_MASK
;
238 if (psw_ioint_disabled(vcpu
))
239 active_mask
&= ~IRQ_PEND_IO_MASK
;
241 active_mask
= disable_iscs(vcpu
, active_mask
);
242 if (!(vcpu
->arch
.sie_block
->gcr
[0] & 0x2000ul
))
243 __clear_bit(IRQ_PEND_EXT_EXTERNAL
, &active_mask
);
244 if (!(vcpu
->arch
.sie_block
->gcr
[0] & 0x4000ul
))
245 __clear_bit(IRQ_PEND_EXT_EMERGENCY
, &active_mask
);
246 if (!(vcpu
->arch
.sie_block
->gcr
[0] & 0x800ul
))
247 __clear_bit(IRQ_PEND_EXT_CLOCK_COMP
, &active_mask
);
248 if (!(vcpu
->arch
.sie_block
->gcr
[0] & 0x400ul
))
249 __clear_bit(IRQ_PEND_EXT_CPU_TIMER
, &active_mask
);
250 if (!(vcpu
->arch
.sie_block
->gcr
[0] & 0x200ul
))
251 __clear_bit(IRQ_PEND_EXT_SERVICE
, &active_mask
);
252 if (psw_mchk_disabled(vcpu
))
253 active_mask
&= ~IRQ_PEND_MCHK_MASK
;
254 if (!(vcpu
->arch
.sie_block
->gcr
[14] &
255 vcpu
->kvm
->arch
.float_int
.mchk
.cr14
))
256 __clear_bit(IRQ_PEND_MCHK_REP
, &active_mask
);
259 * STOP irqs will never be actively delivered. They are triggered via
260 * intercept requests and cleared when the stop intercept is performed.
262 __clear_bit(IRQ_PEND_SIGP_STOP
, &active_mask
);
267 static void __set_cpu_idle(struct kvm_vcpu
*vcpu
)
269 atomic_or(CPUSTAT_WAIT
, &vcpu
->arch
.sie_block
->cpuflags
);
270 set_bit(vcpu
->vcpu_id
, vcpu
->arch
.local_int
.float_int
->idle_mask
);
273 static void __unset_cpu_idle(struct kvm_vcpu
*vcpu
)
275 atomic_andnot(CPUSTAT_WAIT
, &vcpu
->arch
.sie_block
->cpuflags
);
276 clear_bit(vcpu
->vcpu_id
, vcpu
->arch
.local_int
.float_int
->idle_mask
);
279 static void __reset_intercept_indicators(struct kvm_vcpu
*vcpu
)
281 atomic_andnot(CPUSTAT_IO_INT
| CPUSTAT_EXT_INT
| CPUSTAT_STOP_INT
,
282 &vcpu
->arch
.sie_block
->cpuflags
);
283 vcpu
->arch
.sie_block
->lctl
= 0x0000;
284 vcpu
->arch
.sie_block
->ictl
&= ~(ICTL_LPSW
| ICTL_STCTL
| ICTL_PINT
);
286 if (guestdbg_enabled(vcpu
)) {
287 vcpu
->arch
.sie_block
->lctl
|= (LCTL_CR0
| LCTL_CR9
|
288 LCTL_CR10
| LCTL_CR11
);
289 vcpu
->arch
.sie_block
->ictl
|= (ICTL_STCTL
| ICTL_PINT
);
293 static void __set_cpuflag(struct kvm_vcpu
*vcpu
, u32 flag
)
295 atomic_or(flag
, &vcpu
->arch
.sie_block
->cpuflags
);
298 static void set_intercept_indicators_io(struct kvm_vcpu
*vcpu
)
300 if (!(pending_irqs(vcpu
) & IRQ_PEND_IO_MASK
))
302 else if (psw_ioint_disabled(vcpu
))
303 __set_cpuflag(vcpu
, CPUSTAT_IO_INT
);
305 vcpu
->arch
.sie_block
->lctl
|= LCTL_CR6
;
308 static void set_intercept_indicators_ext(struct kvm_vcpu
*vcpu
)
310 if (!(pending_irqs(vcpu
) & IRQ_PEND_EXT_MASK
))
312 if (psw_extint_disabled(vcpu
))
313 __set_cpuflag(vcpu
, CPUSTAT_EXT_INT
);
315 vcpu
->arch
.sie_block
->lctl
|= LCTL_CR0
;
318 static void set_intercept_indicators_mchk(struct kvm_vcpu
*vcpu
)
320 if (!(pending_irqs(vcpu
) & IRQ_PEND_MCHK_MASK
))
322 if (psw_mchk_disabled(vcpu
))
323 vcpu
->arch
.sie_block
->ictl
|= ICTL_LPSW
;
325 vcpu
->arch
.sie_block
->lctl
|= LCTL_CR14
;
328 static void set_intercept_indicators_stop(struct kvm_vcpu
*vcpu
)
330 if (kvm_s390_is_stop_irq_pending(vcpu
))
331 __set_cpuflag(vcpu
, CPUSTAT_STOP_INT
);
334 /* Set interception request for non-deliverable interrupts */
335 static void set_intercept_indicators(struct kvm_vcpu
*vcpu
)
337 set_intercept_indicators_io(vcpu
);
338 set_intercept_indicators_ext(vcpu
);
339 set_intercept_indicators_mchk(vcpu
);
340 set_intercept_indicators_stop(vcpu
);
343 static int __must_check
__deliver_cpu_timer(struct kvm_vcpu
*vcpu
)
345 struct kvm_s390_local_interrupt
*li
= &vcpu
->arch
.local_int
;
348 trace_kvm_s390_deliver_interrupt(vcpu
->vcpu_id
, KVM_S390_INT_CPU_TIMER
,
351 rc
= put_guest_lc(vcpu
, EXT_IRQ_CPU_TIMER
,
352 (u16
*)__LC_EXT_INT_CODE
);
353 rc
|= put_guest_lc(vcpu
, 0, (u16
*)__LC_EXT_CPU_ADDR
);
354 rc
|= write_guest_lc(vcpu
, __LC_EXT_OLD_PSW
,
355 &vcpu
->arch
.sie_block
->gpsw
, sizeof(psw_t
));
356 rc
|= read_guest_lc(vcpu
, __LC_EXT_NEW_PSW
,
357 &vcpu
->arch
.sie_block
->gpsw
, sizeof(psw_t
));
358 clear_bit(IRQ_PEND_EXT_CPU_TIMER
, &li
->pending_irqs
);
359 return rc
? -EFAULT
: 0;
362 static int __must_check
__deliver_ckc(struct kvm_vcpu
*vcpu
)
364 struct kvm_s390_local_interrupt
*li
= &vcpu
->arch
.local_int
;
367 trace_kvm_s390_deliver_interrupt(vcpu
->vcpu_id
, KVM_S390_INT_CLOCK_COMP
,
370 rc
= put_guest_lc(vcpu
, EXT_IRQ_CLK_COMP
,
371 (u16 __user
*)__LC_EXT_INT_CODE
);
372 rc
|= put_guest_lc(vcpu
, 0, (u16
*)__LC_EXT_CPU_ADDR
);
373 rc
|= write_guest_lc(vcpu
, __LC_EXT_OLD_PSW
,
374 &vcpu
->arch
.sie_block
->gpsw
, sizeof(psw_t
));
375 rc
|= read_guest_lc(vcpu
, __LC_EXT_NEW_PSW
,
376 &vcpu
->arch
.sie_block
->gpsw
, sizeof(psw_t
));
377 clear_bit(IRQ_PEND_EXT_CLOCK_COMP
, &li
->pending_irqs
);
378 return rc
? -EFAULT
: 0;
381 static int __must_check
__deliver_pfault_init(struct kvm_vcpu
*vcpu
)
383 struct kvm_s390_local_interrupt
*li
= &vcpu
->arch
.local_int
;
384 struct kvm_s390_ext_info ext
;
387 spin_lock(&li
->lock
);
389 clear_bit(IRQ_PEND_PFAULT_INIT
, &li
->pending_irqs
);
390 li
->irq
.ext
.ext_params2
= 0;
391 spin_unlock(&li
->lock
);
393 VCPU_EVENT(vcpu
, 4, "deliver: pfault init token 0x%llx",
395 trace_kvm_s390_deliver_interrupt(vcpu
->vcpu_id
,
396 KVM_S390_INT_PFAULT_INIT
,
399 rc
= put_guest_lc(vcpu
, EXT_IRQ_CP_SERVICE
, (u16
*) __LC_EXT_INT_CODE
);
400 rc
|= put_guest_lc(vcpu
, PFAULT_INIT
, (u16
*) __LC_EXT_CPU_ADDR
);
401 rc
|= write_guest_lc(vcpu
, __LC_EXT_OLD_PSW
,
402 &vcpu
->arch
.sie_block
->gpsw
, sizeof(psw_t
));
403 rc
|= read_guest_lc(vcpu
, __LC_EXT_NEW_PSW
,
404 &vcpu
->arch
.sie_block
->gpsw
, sizeof(psw_t
));
405 rc
|= put_guest_lc(vcpu
, ext
.ext_params2
, (u64
*) __LC_EXT_PARAMS2
);
406 return rc
? -EFAULT
: 0;
409 static int __write_machine_check(struct kvm_vcpu
*vcpu
,
410 struct kvm_s390_mchk_info
*mchk
)
412 unsigned long ext_sa_addr
;
414 freg_t fprs
[NUM_FPRS
];
418 mci
.val
= mchk
->mcic
;
419 /* take care of lazy register loading */
421 save_access_regs(vcpu
->run
->s
.regs
.acrs
);
422 if (MACHINE_HAS_GS
&& vcpu
->arch
.gs_enabled
)
423 save_gs_cb(current
->thread
.gs_cb
);
425 /* Extended save area */
426 rc
= read_guest_lc(vcpu
, __LC_MCESAD
, &ext_sa_addr
,
427 sizeof(unsigned long));
428 /* Only bits 0 through 63-LC are used for address formation */
429 lc
= ext_sa_addr
& MCESA_LC_MASK
;
430 if (test_kvm_facility(vcpu
->kvm
, 133)) {
434 ext_sa_addr
&= ~0x3ffUL
;
437 ext_sa_addr
&= ~0x7ffUL
;
440 ext_sa_addr
&= ~0xfffUL
;
447 ext_sa_addr
&= ~0x3ffUL
;
450 if (!rc
&& mci
.vr
&& ext_sa_addr
&& test_kvm_facility(vcpu
->kvm
, 129)) {
451 if (write_guest_abs(vcpu
, ext_sa_addr
, vcpu
->run
->s
.regs
.vrs
,
457 if (!rc
&& mci
.gs
&& ext_sa_addr
&& test_kvm_facility(vcpu
->kvm
, 133)
458 && (lc
== 11 || lc
== 12)) {
459 if (write_guest_abs(vcpu
, ext_sa_addr
+ 1024,
460 &vcpu
->run
->s
.regs
.gscb
, 32))
466 /* General interruption information */
467 rc
|= put_guest_lc(vcpu
, 1, (u8 __user
*) __LC_AR_MODE_ID
);
468 rc
|= write_guest_lc(vcpu
, __LC_MCK_OLD_PSW
,
469 &vcpu
->arch
.sie_block
->gpsw
, sizeof(psw_t
));
470 rc
|= read_guest_lc(vcpu
, __LC_MCK_NEW_PSW
,
471 &vcpu
->arch
.sie_block
->gpsw
, sizeof(psw_t
));
472 rc
|= put_guest_lc(vcpu
, mci
.val
, (u64 __user
*) __LC_MCCK_CODE
);
474 /* Register-save areas */
475 if (MACHINE_HAS_VX
) {
476 convert_vx_to_fp(fprs
, (__vector128
*) vcpu
->run
->s
.regs
.vrs
);
477 rc
|= write_guest_lc(vcpu
, __LC_FPREGS_SAVE_AREA
, fprs
, 128);
479 rc
|= write_guest_lc(vcpu
, __LC_FPREGS_SAVE_AREA
,
480 vcpu
->run
->s
.regs
.fprs
, 128);
482 rc
|= write_guest_lc(vcpu
, __LC_GPREGS_SAVE_AREA
,
483 vcpu
->run
->s
.regs
.gprs
, 128);
484 rc
|= put_guest_lc(vcpu
, current
->thread
.fpu
.fpc
,
485 (u32 __user
*) __LC_FP_CREG_SAVE_AREA
);
486 rc
|= put_guest_lc(vcpu
, vcpu
->arch
.sie_block
->todpr
,
487 (u32 __user
*) __LC_TOD_PROGREG_SAVE_AREA
);
488 rc
|= put_guest_lc(vcpu
, kvm_s390_get_cpu_timer(vcpu
),
489 (u64 __user
*) __LC_CPU_TIMER_SAVE_AREA
);
490 rc
|= put_guest_lc(vcpu
, vcpu
->arch
.sie_block
->ckc
>> 8,
491 (u64 __user
*) __LC_CLOCK_COMP_SAVE_AREA
);
492 rc
|= write_guest_lc(vcpu
, __LC_AREGS_SAVE_AREA
,
493 &vcpu
->run
->s
.regs
.acrs
, 64);
494 rc
|= write_guest_lc(vcpu
, __LC_CREGS_SAVE_AREA
,
495 &vcpu
->arch
.sie_block
->gcr
, 128);
497 /* Extended interruption information */
498 rc
|= put_guest_lc(vcpu
, mchk
->ext_damage_code
,
499 (u32 __user
*) __LC_EXT_DAMAGE_CODE
);
500 rc
|= put_guest_lc(vcpu
, mchk
->failing_storage_address
,
501 (u64 __user
*) __LC_MCCK_FAIL_STOR_ADDR
);
502 rc
|= write_guest_lc(vcpu
, __LC_PSW_SAVE_AREA
, &mchk
->fixed_logout
,
503 sizeof(mchk
->fixed_logout
));
504 return rc
? -EFAULT
: 0;
507 static int __must_check
__deliver_machine_check(struct kvm_vcpu
*vcpu
)
509 struct kvm_s390_float_interrupt
*fi
= &vcpu
->kvm
->arch
.float_int
;
510 struct kvm_s390_local_interrupt
*li
= &vcpu
->arch
.local_int
;
511 struct kvm_s390_mchk_info mchk
= {};
515 spin_lock(&fi
->lock
);
516 spin_lock(&li
->lock
);
517 if (test_bit(IRQ_PEND_MCHK_EX
, &li
->pending_irqs
) ||
518 test_bit(IRQ_PEND_MCHK_REP
, &li
->pending_irqs
)) {
520 * If there was an exigent machine check pending, then any
521 * repressible machine checks that might have been pending
522 * are indicated along with it, so always clear bits for
523 * repressible and exigent interrupts
526 clear_bit(IRQ_PEND_MCHK_EX
, &li
->pending_irqs
);
527 clear_bit(IRQ_PEND_MCHK_REP
, &li
->pending_irqs
);
528 memset(&li
->irq
.mchk
, 0, sizeof(mchk
));
532 * We indicate floating repressible conditions along with
533 * other pending conditions. Channel Report Pending and Channel
534 * Subsystem damage are the only two and and are indicated by
535 * bits in mcic and masked in cr14.
537 if (test_and_clear_bit(IRQ_PEND_MCHK_REP
, &fi
->pending_irqs
)) {
538 mchk
.mcic
|= fi
->mchk
.mcic
;
539 mchk
.cr14
|= fi
->mchk
.cr14
;
540 memset(&fi
->mchk
, 0, sizeof(mchk
));
543 spin_unlock(&li
->lock
);
544 spin_unlock(&fi
->lock
);
547 VCPU_EVENT(vcpu
, 3, "deliver: machine check mcic 0x%llx",
549 trace_kvm_s390_deliver_interrupt(vcpu
->vcpu_id
,
551 mchk
.cr14
, mchk
.mcic
);
552 rc
= __write_machine_check(vcpu
, &mchk
);
557 static int __must_check
__deliver_restart(struct kvm_vcpu
*vcpu
)
559 struct kvm_s390_local_interrupt
*li
= &vcpu
->arch
.local_int
;
562 VCPU_EVENT(vcpu
, 3, "%s", "deliver: cpu restart");
563 vcpu
->stat
.deliver_restart_signal
++;
564 trace_kvm_s390_deliver_interrupt(vcpu
->vcpu_id
, KVM_S390_RESTART
, 0, 0);
566 rc
= write_guest_lc(vcpu
,
567 offsetof(struct lowcore
, restart_old_psw
),
568 &vcpu
->arch
.sie_block
->gpsw
, sizeof(psw_t
));
569 rc
|= read_guest_lc(vcpu
, offsetof(struct lowcore
, restart_psw
),
570 &vcpu
->arch
.sie_block
->gpsw
, sizeof(psw_t
));
571 clear_bit(IRQ_PEND_RESTART
, &li
->pending_irqs
);
572 return rc
? -EFAULT
: 0;
575 static int __must_check
__deliver_set_prefix(struct kvm_vcpu
*vcpu
)
577 struct kvm_s390_local_interrupt
*li
= &vcpu
->arch
.local_int
;
578 struct kvm_s390_prefix_info prefix
;
580 spin_lock(&li
->lock
);
581 prefix
= li
->irq
.prefix
;
582 li
->irq
.prefix
.address
= 0;
583 clear_bit(IRQ_PEND_SET_PREFIX
, &li
->pending_irqs
);
584 spin_unlock(&li
->lock
);
586 vcpu
->stat
.deliver_prefix_signal
++;
587 trace_kvm_s390_deliver_interrupt(vcpu
->vcpu_id
,
588 KVM_S390_SIGP_SET_PREFIX
,
591 kvm_s390_set_prefix(vcpu
, prefix
.address
);
595 static int __must_check
__deliver_emergency_signal(struct kvm_vcpu
*vcpu
)
597 struct kvm_s390_local_interrupt
*li
= &vcpu
->arch
.local_int
;
601 spin_lock(&li
->lock
);
602 cpu_addr
= find_first_bit(li
->sigp_emerg_pending
, KVM_MAX_VCPUS
);
603 clear_bit(cpu_addr
, li
->sigp_emerg_pending
);
604 if (bitmap_empty(li
->sigp_emerg_pending
, KVM_MAX_VCPUS
))
605 clear_bit(IRQ_PEND_EXT_EMERGENCY
, &li
->pending_irqs
);
606 spin_unlock(&li
->lock
);
608 VCPU_EVENT(vcpu
, 4, "%s", "deliver: sigp emerg");
609 vcpu
->stat
.deliver_emergency_signal
++;
610 trace_kvm_s390_deliver_interrupt(vcpu
->vcpu_id
, KVM_S390_INT_EMERGENCY
,
613 rc
= put_guest_lc(vcpu
, EXT_IRQ_EMERGENCY_SIG
,
614 (u16
*)__LC_EXT_INT_CODE
);
615 rc
|= put_guest_lc(vcpu
, cpu_addr
, (u16
*)__LC_EXT_CPU_ADDR
);
616 rc
|= write_guest_lc(vcpu
, __LC_EXT_OLD_PSW
,
617 &vcpu
->arch
.sie_block
->gpsw
, sizeof(psw_t
));
618 rc
|= read_guest_lc(vcpu
, __LC_EXT_NEW_PSW
,
619 &vcpu
->arch
.sie_block
->gpsw
, sizeof(psw_t
));
620 return rc
? -EFAULT
: 0;
623 static int __must_check
__deliver_external_call(struct kvm_vcpu
*vcpu
)
625 struct kvm_s390_local_interrupt
*li
= &vcpu
->arch
.local_int
;
626 struct kvm_s390_extcall_info extcall
;
629 spin_lock(&li
->lock
);
630 extcall
= li
->irq
.extcall
;
631 li
->irq
.extcall
.code
= 0;
632 clear_bit(IRQ_PEND_EXT_EXTERNAL
, &li
->pending_irqs
);
633 spin_unlock(&li
->lock
);
635 VCPU_EVENT(vcpu
, 4, "%s", "deliver: sigp ext call");
636 vcpu
->stat
.deliver_external_call
++;
637 trace_kvm_s390_deliver_interrupt(vcpu
->vcpu_id
,
638 KVM_S390_INT_EXTERNAL_CALL
,
641 rc
= put_guest_lc(vcpu
, EXT_IRQ_EXTERNAL_CALL
,
642 (u16
*)__LC_EXT_INT_CODE
);
643 rc
|= put_guest_lc(vcpu
, extcall
.code
, (u16
*)__LC_EXT_CPU_ADDR
);
644 rc
|= write_guest_lc(vcpu
, __LC_EXT_OLD_PSW
,
645 &vcpu
->arch
.sie_block
->gpsw
, sizeof(psw_t
));
646 rc
|= read_guest_lc(vcpu
, __LC_EXT_NEW_PSW
, &vcpu
->arch
.sie_block
->gpsw
,
648 return rc
? -EFAULT
: 0;
651 static int __must_check
__deliver_prog(struct kvm_vcpu
*vcpu
)
653 struct kvm_s390_local_interrupt
*li
= &vcpu
->arch
.local_int
;
654 struct kvm_s390_pgm_info pgm_info
;
655 int rc
= 0, nullifying
= false;
658 spin_lock(&li
->lock
);
659 pgm_info
= li
->irq
.pgm
;
660 clear_bit(IRQ_PEND_PROG
, &li
->pending_irqs
);
661 memset(&li
->irq
.pgm
, 0, sizeof(pgm_info
));
662 spin_unlock(&li
->lock
);
664 ilen
= pgm_info
.flags
& KVM_S390_PGM_FLAGS_ILC_MASK
;
665 VCPU_EVENT(vcpu
, 3, "deliver: program irq code 0x%x, ilen:%d",
666 pgm_info
.code
, ilen
);
667 vcpu
->stat
.deliver_program_int
++;
668 trace_kvm_s390_deliver_interrupt(vcpu
->vcpu_id
, KVM_S390_PROGRAM_INT
,
671 switch (pgm_info
.code
& ~PGM_PER
) {
672 case PGM_AFX_TRANSLATION
:
673 case PGM_ASX_TRANSLATION
:
674 case PGM_EX_TRANSLATION
:
675 case PGM_LFX_TRANSLATION
:
676 case PGM_LSTE_SEQUENCE
:
677 case PGM_LSX_TRANSLATION
:
678 case PGM_LX_TRANSLATION
:
679 case PGM_PRIMARY_AUTHORITY
:
680 case PGM_SECONDARY_AUTHORITY
:
683 case PGM_SPACE_SWITCH
:
684 rc
= put_guest_lc(vcpu
, pgm_info
.trans_exc_code
,
685 (u64
*)__LC_TRANS_EXC_CODE
);
687 case PGM_ALEN_TRANSLATION
:
688 case PGM_ALE_SEQUENCE
:
689 case PGM_ASTE_INSTANCE
:
690 case PGM_ASTE_SEQUENCE
:
691 case PGM_ASTE_VALIDITY
:
692 case PGM_EXTENDED_AUTHORITY
:
693 rc
= put_guest_lc(vcpu
, pgm_info
.exc_access_id
,
694 (u8
*)__LC_EXC_ACCESS_ID
);
698 case PGM_PAGE_TRANSLATION
:
699 case PGM_REGION_FIRST_TRANS
:
700 case PGM_REGION_SECOND_TRANS
:
701 case PGM_REGION_THIRD_TRANS
:
702 case PGM_SEGMENT_TRANSLATION
:
703 rc
= put_guest_lc(vcpu
, pgm_info
.trans_exc_code
,
704 (u64
*)__LC_TRANS_EXC_CODE
);
705 rc
|= put_guest_lc(vcpu
, pgm_info
.exc_access_id
,
706 (u8
*)__LC_EXC_ACCESS_ID
);
707 rc
|= put_guest_lc(vcpu
, pgm_info
.op_access_id
,
708 (u8
*)__LC_OP_ACCESS_ID
);
712 rc
= put_guest_lc(vcpu
, pgm_info
.mon_class_nr
,
713 (u16
*)__LC_MON_CLASS_NR
);
714 rc
|= put_guest_lc(vcpu
, pgm_info
.mon_code
,
715 (u64
*)__LC_MON_CODE
);
717 case PGM_VECTOR_PROCESSING
:
719 rc
= put_guest_lc(vcpu
, pgm_info
.data_exc_code
,
720 (u32
*)__LC_DATA_EXC_CODE
);
723 rc
= put_guest_lc(vcpu
, pgm_info
.trans_exc_code
,
724 (u64
*)__LC_TRANS_EXC_CODE
);
725 rc
|= put_guest_lc(vcpu
, pgm_info
.exc_access_id
,
726 (u8
*)__LC_EXC_ACCESS_ID
);
729 case PGM_STACK_EMPTY
:
730 case PGM_STACK_SPECIFICATION
:
732 case PGM_STACK_OPERATION
:
733 case PGM_TRACE_TABEL
:
734 case PGM_CRYPTO_OPERATION
:
739 if (pgm_info
.code
& PGM_PER
) {
740 rc
|= put_guest_lc(vcpu
, pgm_info
.per_code
,
741 (u8
*) __LC_PER_CODE
);
742 rc
|= put_guest_lc(vcpu
, pgm_info
.per_atmid
,
743 (u8
*)__LC_PER_ATMID
);
744 rc
|= put_guest_lc(vcpu
, pgm_info
.per_address
,
745 (u64
*) __LC_PER_ADDRESS
);
746 rc
|= put_guest_lc(vcpu
, pgm_info
.per_access_id
,
747 (u8
*) __LC_PER_ACCESS_ID
);
750 if (nullifying
&& !(pgm_info
.flags
& KVM_S390_PGM_FLAGS_NO_REWIND
))
751 kvm_s390_rewind_psw(vcpu
, ilen
);
753 /* bit 1+2 of the target are the ilc, so we can directly use ilen */
754 rc
|= put_guest_lc(vcpu
, ilen
, (u16
*) __LC_PGM_ILC
);
755 rc
|= put_guest_lc(vcpu
, vcpu
->arch
.sie_block
->gbea
,
756 (u64
*) __LC_LAST_BREAK
);
757 rc
|= put_guest_lc(vcpu
, pgm_info
.code
,
758 (u16
*)__LC_PGM_INT_CODE
);
759 rc
|= write_guest_lc(vcpu
, __LC_PGM_OLD_PSW
,
760 &vcpu
->arch
.sie_block
->gpsw
, sizeof(psw_t
));
761 rc
|= read_guest_lc(vcpu
, __LC_PGM_NEW_PSW
,
762 &vcpu
->arch
.sie_block
->gpsw
, sizeof(psw_t
));
763 return rc
? -EFAULT
: 0;
766 static int __must_check
__deliver_service(struct kvm_vcpu
*vcpu
)
768 struct kvm_s390_float_interrupt
*fi
= &vcpu
->kvm
->arch
.float_int
;
769 struct kvm_s390_ext_info ext
;
772 spin_lock(&fi
->lock
);
773 if (!(test_bit(IRQ_PEND_EXT_SERVICE
, &fi
->pending_irqs
))) {
774 spin_unlock(&fi
->lock
);
777 ext
= fi
->srv_signal
;
778 memset(&fi
->srv_signal
, 0, sizeof(ext
));
779 clear_bit(IRQ_PEND_EXT_SERVICE
, &fi
->pending_irqs
);
780 spin_unlock(&fi
->lock
);
782 VCPU_EVENT(vcpu
, 4, "deliver: sclp parameter 0x%x",
784 vcpu
->stat
.deliver_service_signal
++;
785 trace_kvm_s390_deliver_interrupt(vcpu
->vcpu_id
, KVM_S390_INT_SERVICE
,
788 rc
= put_guest_lc(vcpu
, EXT_IRQ_SERVICE_SIG
, (u16
*)__LC_EXT_INT_CODE
);
789 rc
|= put_guest_lc(vcpu
, 0, (u16
*)__LC_EXT_CPU_ADDR
);
790 rc
|= write_guest_lc(vcpu
, __LC_EXT_OLD_PSW
,
791 &vcpu
->arch
.sie_block
->gpsw
, sizeof(psw_t
));
792 rc
|= read_guest_lc(vcpu
, __LC_EXT_NEW_PSW
,
793 &vcpu
->arch
.sie_block
->gpsw
, sizeof(psw_t
));
794 rc
|= put_guest_lc(vcpu
, ext
.ext_params
,
795 (u32
*)__LC_EXT_PARAMS
);
797 return rc
? -EFAULT
: 0;
800 static int __must_check
__deliver_pfault_done(struct kvm_vcpu
*vcpu
)
802 struct kvm_s390_float_interrupt
*fi
= &vcpu
->kvm
->arch
.float_int
;
803 struct kvm_s390_interrupt_info
*inti
;
806 spin_lock(&fi
->lock
);
807 inti
= list_first_entry_or_null(&fi
->lists
[FIRQ_LIST_PFAULT
],
808 struct kvm_s390_interrupt_info
,
811 list_del(&inti
->list
);
812 fi
->counters
[FIRQ_CNTR_PFAULT
] -= 1;
814 if (list_empty(&fi
->lists
[FIRQ_LIST_PFAULT
]))
815 clear_bit(IRQ_PEND_PFAULT_DONE
, &fi
->pending_irqs
);
816 spin_unlock(&fi
->lock
);
819 trace_kvm_s390_deliver_interrupt(vcpu
->vcpu_id
,
820 KVM_S390_INT_PFAULT_DONE
, 0,
821 inti
->ext
.ext_params2
);
822 VCPU_EVENT(vcpu
, 4, "deliver: pfault done token 0x%llx",
823 inti
->ext
.ext_params2
);
825 rc
= put_guest_lc(vcpu
, EXT_IRQ_CP_SERVICE
,
826 (u16
*)__LC_EXT_INT_CODE
);
827 rc
|= put_guest_lc(vcpu
, PFAULT_DONE
,
828 (u16
*)__LC_EXT_CPU_ADDR
);
829 rc
|= write_guest_lc(vcpu
, __LC_EXT_OLD_PSW
,
830 &vcpu
->arch
.sie_block
->gpsw
,
832 rc
|= read_guest_lc(vcpu
, __LC_EXT_NEW_PSW
,
833 &vcpu
->arch
.sie_block
->gpsw
,
835 rc
|= put_guest_lc(vcpu
, inti
->ext
.ext_params2
,
836 (u64
*)__LC_EXT_PARAMS2
);
839 return rc
? -EFAULT
: 0;
842 static int __must_check
__deliver_virtio(struct kvm_vcpu
*vcpu
)
844 struct kvm_s390_float_interrupt
*fi
= &vcpu
->kvm
->arch
.float_int
;
845 struct kvm_s390_interrupt_info
*inti
;
848 spin_lock(&fi
->lock
);
849 inti
= list_first_entry_or_null(&fi
->lists
[FIRQ_LIST_VIRTIO
],
850 struct kvm_s390_interrupt_info
,
854 "deliver: virtio parm: 0x%x,parm64: 0x%llx",
855 inti
->ext
.ext_params
, inti
->ext
.ext_params2
);
856 vcpu
->stat
.deliver_virtio_interrupt
++;
857 trace_kvm_s390_deliver_interrupt(vcpu
->vcpu_id
,
859 inti
->ext
.ext_params
,
860 inti
->ext
.ext_params2
);
861 list_del(&inti
->list
);
862 fi
->counters
[FIRQ_CNTR_VIRTIO
] -= 1;
864 if (list_empty(&fi
->lists
[FIRQ_LIST_VIRTIO
]))
865 clear_bit(IRQ_PEND_VIRTIO
, &fi
->pending_irqs
);
866 spin_unlock(&fi
->lock
);
869 rc
= put_guest_lc(vcpu
, EXT_IRQ_CP_SERVICE
,
870 (u16
*)__LC_EXT_INT_CODE
);
871 rc
|= put_guest_lc(vcpu
, VIRTIO_PARAM
,
872 (u16
*)__LC_EXT_CPU_ADDR
);
873 rc
|= write_guest_lc(vcpu
, __LC_EXT_OLD_PSW
,
874 &vcpu
->arch
.sie_block
->gpsw
,
876 rc
|= read_guest_lc(vcpu
, __LC_EXT_NEW_PSW
,
877 &vcpu
->arch
.sie_block
->gpsw
,
879 rc
|= put_guest_lc(vcpu
, inti
->ext
.ext_params
,
880 (u32
*)__LC_EXT_PARAMS
);
881 rc
|= put_guest_lc(vcpu
, inti
->ext
.ext_params2
,
882 (u64
*)__LC_EXT_PARAMS2
);
885 return rc
? -EFAULT
: 0;
888 static int __must_check
__deliver_io(struct kvm_vcpu
*vcpu
,
889 unsigned long irq_type
)
891 struct list_head
*isc_list
;
892 struct kvm_s390_float_interrupt
*fi
;
893 struct kvm_s390_interrupt_info
*inti
= NULL
;
896 fi
= &vcpu
->kvm
->arch
.float_int
;
898 spin_lock(&fi
->lock
);
899 isc_list
= &fi
->lists
[irq_type
- IRQ_PEND_IO_ISC_0
];
900 inti
= list_first_entry_or_null(isc_list
,
901 struct kvm_s390_interrupt_info
,
904 if (inti
->type
& KVM_S390_INT_IO_AI_MASK
)
905 VCPU_EVENT(vcpu
, 4, "%s", "deliver: I/O (AI)");
907 VCPU_EVENT(vcpu
, 4, "deliver: I/O %x ss %x schid %04x",
908 inti
->io
.subchannel_id
>> 8,
909 inti
->io
.subchannel_id
>> 1 & 0x3,
910 inti
->io
.subchannel_nr
);
912 vcpu
->stat
.deliver_io_int
++;
913 trace_kvm_s390_deliver_interrupt(vcpu
->vcpu_id
,
915 ((__u32
)inti
->io
.subchannel_id
<< 16) |
916 inti
->io
.subchannel_nr
,
917 ((__u64
)inti
->io
.io_int_parm
<< 32) |
918 inti
->io
.io_int_word
);
919 list_del(&inti
->list
);
920 fi
->counters
[FIRQ_CNTR_IO
] -= 1;
922 if (list_empty(isc_list
))
923 clear_bit(irq_type
, &fi
->pending_irqs
);
924 spin_unlock(&fi
->lock
);
927 rc
= put_guest_lc(vcpu
, inti
->io
.subchannel_id
,
928 (u16
*)__LC_SUBCHANNEL_ID
);
929 rc
|= put_guest_lc(vcpu
, inti
->io
.subchannel_nr
,
930 (u16
*)__LC_SUBCHANNEL_NR
);
931 rc
|= put_guest_lc(vcpu
, inti
->io
.io_int_parm
,
932 (u32
*)__LC_IO_INT_PARM
);
933 rc
|= put_guest_lc(vcpu
, inti
->io
.io_int_word
,
934 (u32
*)__LC_IO_INT_WORD
);
935 rc
|= write_guest_lc(vcpu
, __LC_IO_OLD_PSW
,
936 &vcpu
->arch
.sie_block
->gpsw
,
938 rc
|= read_guest_lc(vcpu
, __LC_IO_NEW_PSW
,
939 &vcpu
->arch
.sie_block
->gpsw
,
944 return rc
? -EFAULT
: 0;
947 typedef int (*deliver_irq_t
)(struct kvm_vcpu
*vcpu
);
949 static const deliver_irq_t deliver_irq_funcs
[] = {
950 [IRQ_PEND_MCHK_EX
] = __deliver_machine_check
,
951 [IRQ_PEND_MCHK_REP
] = __deliver_machine_check
,
952 [IRQ_PEND_PROG
] = __deliver_prog
,
953 [IRQ_PEND_EXT_EMERGENCY
] = __deliver_emergency_signal
,
954 [IRQ_PEND_EXT_EXTERNAL
] = __deliver_external_call
,
955 [IRQ_PEND_EXT_CLOCK_COMP
] = __deliver_ckc
,
956 [IRQ_PEND_EXT_CPU_TIMER
] = __deliver_cpu_timer
,
957 [IRQ_PEND_RESTART
] = __deliver_restart
,
958 [IRQ_PEND_SET_PREFIX
] = __deliver_set_prefix
,
959 [IRQ_PEND_PFAULT_INIT
] = __deliver_pfault_init
,
960 [IRQ_PEND_EXT_SERVICE
] = __deliver_service
,
961 [IRQ_PEND_PFAULT_DONE
] = __deliver_pfault_done
,
962 [IRQ_PEND_VIRTIO
] = __deliver_virtio
,
965 /* Check whether an external call is pending (deliverable or not) */
966 int kvm_s390_ext_call_pending(struct kvm_vcpu
*vcpu
)
968 struct kvm_s390_local_interrupt
*li
= &vcpu
->arch
.local_int
;
970 if (!sclp
.has_sigpif
)
971 return test_bit(IRQ_PEND_EXT_EXTERNAL
, &li
->pending_irqs
);
973 return sca_ext_call_pending(vcpu
, NULL
);
976 int kvm_s390_vcpu_has_irq(struct kvm_vcpu
*vcpu
, int exclude_stop
)
978 if (deliverable_irqs(vcpu
))
981 if (kvm_cpu_has_pending_timer(vcpu
))
984 /* external call pending and deliverable */
985 if (kvm_s390_ext_call_pending(vcpu
) &&
986 !psw_extint_disabled(vcpu
) &&
987 (vcpu
->arch
.sie_block
->gcr
[0] & 0x2000ul
))
990 if (!exclude_stop
&& kvm_s390_is_stop_irq_pending(vcpu
))
995 int kvm_cpu_has_pending_timer(struct kvm_vcpu
*vcpu
)
997 return ckc_irq_pending(vcpu
) || cpu_timer_irq_pending(vcpu
);
1000 static u64
__calculate_sltime(struct kvm_vcpu
*vcpu
)
1002 u64 now
, cputm
, sltime
= 0;
1004 if (ckc_interrupts_enabled(vcpu
)) {
1005 now
= kvm_s390_get_tod_clock_fast(vcpu
->kvm
);
1006 sltime
= tod_to_ns(vcpu
->arch
.sie_block
->ckc
- now
);
1007 /* already expired or overflow? */
1008 if (!sltime
|| vcpu
->arch
.sie_block
->ckc
<= now
)
1010 if (cpu_timer_interrupts_enabled(vcpu
)) {
1011 cputm
= kvm_s390_get_cpu_timer(vcpu
);
1012 /* already expired? */
1015 return min(sltime
, tod_to_ns(cputm
));
1017 } else if (cpu_timer_interrupts_enabled(vcpu
)) {
1018 sltime
= kvm_s390_get_cpu_timer(vcpu
);
1019 /* already expired? */
1026 int kvm_s390_handle_wait(struct kvm_vcpu
*vcpu
)
1030 vcpu
->stat
.exit_wait_state
++;
1033 if (kvm_arch_vcpu_runnable(vcpu
))
1036 if (psw_interrupts_disabled(vcpu
)) {
1037 VCPU_EVENT(vcpu
, 3, "%s", "disabled wait");
1038 return -EOPNOTSUPP
; /* disabled wait */
1041 if (!ckc_interrupts_enabled(vcpu
) &&
1042 !cpu_timer_interrupts_enabled(vcpu
)) {
1043 VCPU_EVENT(vcpu
, 3, "%s", "enabled wait w/o timer");
1044 __set_cpu_idle(vcpu
);
1048 sltime
= __calculate_sltime(vcpu
);
1052 __set_cpu_idle(vcpu
);
1053 hrtimer_start(&vcpu
->arch
.ckc_timer
, sltime
, HRTIMER_MODE_REL
);
1054 VCPU_EVENT(vcpu
, 4, "enabled wait: %llu ns", sltime
);
1056 srcu_read_unlock(&vcpu
->kvm
->srcu
, vcpu
->srcu_idx
);
1057 kvm_vcpu_block(vcpu
);
1058 __unset_cpu_idle(vcpu
);
1059 vcpu
->srcu_idx
= srcu_read_lock(&vcpu
->kvm
->srcu
);
1061 hrtimer_cancel(&vcpu
->arch
.ckc_timer
);
1065 void kvm_s390_vcpu_wakeup(struct kvm_vcpu
*vcpu
)
1068 * We cannot move this into the if, as the CPU might be already
1069 * in kvm_vcpu_block without having the waitqueue set (polling)
1071 vcpu
->valid_wakeup
= true;
1072 if (swait_active(&vcpu
->wq
)) {
1074 * The vcpu gave up the cpu voluntarily, mark it as a good
1077 vcpu
->preempted
= true;
1078 swake_up(&vcpu
->wq
);
1079 vcpu
->stat
.halt_wakeup
++;
1082 * The VCPU might not be sleeping but is executing the VSIE. Let's
1083 * kick it, so it leaves the SIE to process the request.
1085 kvm_s390_vsie_kick(vcpu
);
1088 enum hrtimer_restart
kvm_s390_idle_wakeup(struct hrtimer
*timer
)
1090 struct kvm_vcpu
*vcpu
;
1093 vcpu
= container_of(timer
, struct kvm_vcpu
, arch
.ckc_timer
);
1094 sltime
= __calculate_sltime(vcpu
);
1097 * If the monotonic clock runs faster than the tod clock we might be
1098 * woken up too early and have to go back to sleep to avoid deadlocks.
1100 if (sltime
&& hrtimer_forward_now(timer
, ns_to_ktime(sltime
)))
1101 return HRTIMER_RESTART
;
1102 kvm_s390_vcpu_wakeup(vcpu
);
1103 return HRTIMER_NORESTART
;
1106 void kvm_s390_clear_local_irqs(struct kvm_vcpu
*vcpu
)
1108 struct kvm_s390_local_interrupt
*li
= &vcpu
->arch
.local_int
;
1110 spin_lock(&li
->lock
);
1111 li
->pending_irqs
= 0;
1112 bitmap_zero(li
->sigp_emerg_pending
, KVM_MAX_VCPUS
);
1113 memset(&li
->irq
, 0, sizeof(li
->irq
));
1114 spin_unlock(&li
->lock
);
1116 sca_clear_ext_call(vcpu
);
1119 int __must_check
kvm_s390_deliver_pending_interrupts(struct kvm_vcpu
*vcpu
)
1121 struct kvm_s390_local_interrupt
*li
= &vcpu
->arch
.local_int
;
1124 unsigned long irq_type
;
1127 __reset_intercept_indicators(vcpu
);
1129 /* pending ckc conditions might have been invalidated */
1130 clear_bit(IRQ_PEND_EXT_CLOCK_COMP
, &li
->pending_irqs
);
1131 if (ckc_irq_pending(vcpu
))
1132 set_bit(IRQ_PEND_EXT_CLOCK_COMP
, &li
->pending_irqs
);
1134 /* pending cpu timer conditions might have been invalidated */
1135 clear_bit(IRQ_PEND_EXT_CPU_TIMER
, &li
->pending_irqs
);
1136 if (cpu_timer_irq_pending(vcpu
))
1137 set_bit(IRQ_PEND_EXT_CPU_TIMER
, &li
->pending_irqs
);
1139 while ((irqs
= deliverable_irqs(vcpu
)) && !rc
) {
1140 /* bits are in the order of interrupt priority */
1141 irq_type
= find_first_bit(&irqs
, IRQ_PEND_COUNT
);
1142 if (is_ioirq(irq_type
)) {
1143 rc
= __deliver_io(vcpu
, irq_type
);
1145 func
= deliver_irq_funcs
[irq_type
];
1147 WARN_ON_ONCE(func
== NULL
);
1148 clear_bit(irq_type
, &li
->pending_irqs
);
1155 set_intercept_indicators(vcpu
);
1160 static int __inject_prog(struct kvm_vcpu
*vcpu
, struct kvm_s390_irq
*irq
)
1162 struct kvm_s390_local_interrupt
*li
= &vcpu
->arch
.local_int
;
1164 VCPU_EVENT(vcpu
, 3, "inject: program irq code 0x%x", irq
->u
.pgm
.code
);
1165 trace_kvm_s390_inject_vcpu(vcpu
->vcpu_id
, KVM_S390_PROGRAM_INT
,
1166 irq
->u
.pgm
.code
, 0);
1168 if (!(irq
->u
.pgm
.flags
& KVM_S390_PGM_FLAGS_ILC_VALID
)) {
1169 /* auto detection if no valid ILC was given */
1170 irq
->u
.pgm
.flags
&= ~KVM_S390_PGM_FLAGS_ILC_MASK
;
1171 irq
->u
.pgm
.flags
|= kvm_s390_get_ilen(vcpu
);
1172 irq
->u
.pgm
.flags
|= KVM_S390_PGM_FLAGS_ILC_VALID
;
1175 if (irq
->u
.pgm
.code
== PGM_PER
) {
1176 li
->irq
.pgm
.code
|= PGM_PER
;
1177 li
->irq
.pgm
.flags
= irq
->u
.pgm
.flags
;
1178 /* only modify PER related information */
1179 li
->irq
.pgm
.per_address
= irq
->u
.pgm
.per_address
;
1180 li
->irq
.pgm
.per_code
= irq
->u
.pgm
.per_code
;
1181 li
->irq
.pgm
.per_atmid
= irq
->u
.pgm
.per_atmid
;
1182 li
->irq
.pgm
.per_access_id
= irq
->u
.pgm
.per_access_id
;
1183 } else if (!(irq
->u
.pgm
.code
& PGM_PER
)) {
1184 li
->irq
.pgm
.code
= (li
->irq
.pgm
.code
& PGM_PER
) |
1186 li
->irq
.pgm
.flags
= irq
->u
.pgm
.flags
;
1187 /* only modify non-PER information */
1188 li
->irq
.pgm
.trans_exc_code
= irq
->u
.pgm
.trans_exc_code
;
1189 li
->irq
.pgm
.mon_code
= irq
->u
.pgm
.mon_code
;
1190 li
->irq
.pgm
.data_exc_code
= irq
->u
.pgm
.data_exc_code
;
1191 li
->irq
.pgm
.mon_class_nr
= irq
->u
.pgm
.mon_class_nr
;
1192 li
->irq
.pgm
.exc_access_id
= irq
->u
.pgm
.exc_access_id
;
1193 li
->irq
.pgm
.op_access_id
= irq
->u
.pgm
.op_access_id
;
1195 li
->irq
.pgm
= irq
->u
.pgm
;
1197 set_bit(IRQ_PEND_PROG
, &li
->pending_irqs
);
1201 static int __inject_pfault_init(struct kvm_vcpu
*vcpu
, struct kvm_s390_irq
*irq
)
1203 struct kvm_s390_local_interrupt
*li
= &vcpu
->arch
.local_int
;
1205 VCPU_EVENT(vcpu
, 4, "inject: pfault init parameter block at 0x%llx",
1206 irq
->u
.ext
.ext_params2
);
1207 trace_kvm_s390_inject_vcpu(vcpu
->vcpu_id
, KVM_S390_INT_PFAULT_INIT
,
1208 irq
->u
.ext
.ext_params
,
1209 irq
->u
.ext
.ext_params2
);
1211 li
->irq
.ext
= irq
->u
.ext
;
1212 set_bit(IRQ_PEND_PFAULT_INIT
, &li
->pending_irqs
);
1213 atomic_or(CPUSTAT_EXT_INT
, li
->cpuflags
);
1217 static int __inject_extcall(struct kvm_vcpu
*vcpu
, struct kvm_s390_irq
*irq
)
1219 struct kvm_s390_local_interrupt
*li
= &vcpu
->arch
.local_int
;
1220 struct kvm_s390_extcall_info
*extcall
= &li
->irq
.extcall
;
1221 uint16_t src_id
= irq
->u
.extcall
.code
;
1223 VCPU_EVENT(vcpu
, 4, "inject: external call source-cpu:%u",
1225 trace_kvm_s390_inject_vcpu(vcpu
->vcpu_id
, KVM_S390_INT_EXTERNAL_CALL
,
1228 /* sending vcpu invalid */
1229 if (kvm_get_vcpu_by_id(vcpu
->kvm
, src_id
) == NULL
)
1232 if (sclp
.has_sigpif
)
1233 return sca_inject_ext_call(vcpu
, src_id
);
1235 if (test_and_set_bit(IRQ_PEND_EXT_EXTERNAL
, &li
->pending_irqs
))
1237 *extcall
= irq
->u
.extcall
;
1238 atomic_or(CPUSTAT_EXT_INT
, li
->cpuflags
);
1242 static int __inject_set_prefix(struct kvm_vcpu
*vcpu
, struct kvm_s390_irq
*irq
)
1244 struct kvm_s390_local_interrupt
*li
= &vcpu
->arch
.local_int
;
1245 struct kvm_s390_prefix_info
*prefix
= &li
->irq
.prefix
;
1247 VCPU_EVENT(vcpu
, 3, "inject: set prefix to %x",
1248 irq
->u
.prefix
.address
);
1249 trace_kvm_s390_inject_vcpu(vcpu
->vcpu_id
, KVM_S390_SIGP_SET_PREFIX
,
1250 irq
->u
.prefix
.address
, 0);
1252 if (!is_vcpu_stopped(vcpu
))
1255 *prefix
= irq
->u
.prefix
;
1256 set_bit(IRQ_PEND_SET_PREFIX
, &li
->pending_irqs
);
1260 #define KVM_S390_STOP_SUPP_FLAGS (KVM_S390_STOP_FLAG_STORE_STATUS)
1261 static int __inject_sigp_stop(struct kvm_vcpu
*vcpu
, struct kvm_s390_irq
*irq
)
1263 struct kvm_s390_local_interrupt
*li
= &vcpu
->arch
.local_int
;
1264 struct kvm_s390_stop_info
*stop
= &li
->irq
.stop
;
1267 trace_kvm_s390_inject_vcpu(vcpu
->vcpu_id
, KVM_S390_SIGP_STOP
, 0, 0);
1269 if (irq
->u
.stop
.flags
& ~KVM_S390_STOP_SUPP_FLAGS
)
1272 if (is_vcpu_stopped(vcpu
)) {
1273 if (irq
->u
.stop
.flags
& KVM_S390_STOP_FLAG_STORE_STATUS
)
1274 rc
= kvm_s390_store_status_unloaded(vcpu
,
1275 KVM_S390_STORE_STATUS_NOADDR
);
1279 if (test_and_set_bit(IRQ_PEND_SIGP_STOP
, &li
->pending_irqs
))
1281 stop
->flags
= irq
->u
.stop
.flags
;
1282 __set_cpuflag(vcpu
, CPUSTAT_STOP_INT
);
1286 static int __inject_sigp_restart(struct kvm_vcpu
*vcpu
,
1287 struct kvm_s390_irq
*irq
)
1289 struct kvm_s390_local_interrupt
*li
= &vcpu
->arch
.local_int
;
1291 VCPU_EVENT(vcpu
, 3, "%s", "inject: restart int");
1292 trace_kvm_s390_inject_vcpu(vcpu
->vcpu_id
, KVM_S390_RESTART
, 0, 0);
1294 set_bit(IRQ_PEND_RESTART
, &li
->pending_irqs
);
1298 static int __inject_sigp_emergency(struct kvm_vcpu
*vcpu
,
1299 struct kvm_s390_irq
*irq
)
1301 struct kvm_s390_local_interrupt
*li
= &vcpu
->arch
.local_int
;
1303 VCPU_EVENT(vcpu
, 4, "inject: emergency from cpu %u",
1305 trace_kvm_s390_inject_vcpu(vcpu
->vcpu_id
, KVM_S390_INT_EMERGENCY
,
1306 irq
->u
.emerg
.code
, 0);
1308 /* sending vcpu invalid */
1309 if (kvm_get_vcpu_by_id(vcpu
->kvm
, irq
->u
.emerg
.code
) == NULL
)
1312 set_bit(irq
->u
.emerg
.code
, li
->sigp_emerg_pending
);
1313 set_bit(IRQ_PEND_EXT_EMERGENCY
, &li
->pending_irqs
);
1314 atomic_or(CPUSTAT_EXT_INT
, li
->cpuflags
);
1318 static int __inject_mchk(struct kvm_vcpu
*vcpu
, struct kvm_s390_irq
*irq
)
1320 struct kvm_s390_local_interrupt
*li
= &vcpu
->arch
.local_int
;
1321 struct kvm_s390_mchk_info
*mchk
= &li
->irq
.mchk
;
1323 VCPU_EVENT(vcpu
, 3, "inject: machine check mcic 0x%llx",
1325 trace_kvm_s390_inject_vcpu(vcpu
->vcpu_id
, KVM_S390_MCHK
, 0,
1329 * Because repressible machine checks can be indicated along with
1330 * exigent machine checks (PoP, Chapter 11, Interruption action)
1331 * we need to combine cr14, mcic and external damage code.
1332 * Failing storage address and the logout area should not be or'ed
1333 * together, we just indicate the last occurrence of the corresponding
1336 mchk
->cr14
|= irq
->u
.mchk
.cr14
;
1337 mchk
->mcic
|= irq
->u
.mchk
.mcic
;
1338 mchk
->ext_damage_code
|= irq
->u
.mchk
.ext_damage_code
;
1339 mchk
->failing_storage_address
= irq
->u
.mchk
.failing_storage_address
;
1340 memcpy(&mchk
->fixed_logout
, &irq
->u
.mchk
.fixed_logout
,
1341 sizeof(mchk
->fixed_logout
));
1342 if (mchk
->mcic
& MCHK_EX_MASK
)
1343 set_bit(IRQ_PEND_MCHK_EX
, &li
->pending_irqs
);
1344 else if (mchk
->mcic
& MCHK_REP_MASK
)
1345 set_bit(IRQ_PEND_MCHK_REP
, &li
->pending_irqs
);
1349 static int __inject_ckc(struct kvm_vcpu
*vcpu
)
1351 struct kvm_s390_local_interrupt
*li
= &vcpu
->arch
.local_int
;
1353 VCPU_EVENT(vcpu
, 3, "%s", "inject: clock comparator external");
1354 trace_kvm_s390_inject_vcpu(vcpu
->vcpu_id
, KVM_S390_INT_CLOCK_COMP
,
1357 set_bit(IRQ_PEND_EXT_CLOCK_COMP
, &li
->pending_irqs
);
1358 atomic_or(CPUSTAT_EXT_INT
, li
->cpuflags
);
1362 static int __inject_cpu_timer(struct kvm_vcpu
*vcpu
)
1364 struct kvm_s390_local_interrupt
*li
= &vcpu
->arch
.local_int
;
1366 VCPU_EVENT(vcpu
, 3, "%s", "inject: cpu timer external");
1367 trace_kvm_s390_inject_vcpu(vcpu
->vcpu_id
, KVM_S390_INT_CPU_TIMER
,
1370 set_bit(IRQ_PEND_EXT_CPU_TIMER
, &li
->pending_irqs
);
1371 atomic_or(CPUSTAT_EXT_INT
, li
->cpuflags
);
1375 static struct kvm_s390_interrupt_info
*get_io_int(struct kvm
*kvm
,
1378 struct kvm_s390_float_interrupt
*fi
= &kvm
->arch
.float_int
;
1379 struct list_head
*isc_list
= &fi
->lists
[FIRQ_LIST_IO_ISC_0
+ isc
];
1380 struct kvm_s390_interrupt_info
*iter
;
1381 u16 id
= (schid
& 0xffff0000U
) >> 16;
1382 u16 nr
= schid
& 0x0000ffffU
;
1384 spin_lock(&fi
->lock
);
1385 list_for_each_entry(iter
, isc_list
, list
) {
1386 if (schid
&& (id
!= iter
->io
.subchannel_id
||
1387 nr
!= iter
->io
.subchannel_nr
))
1389 /* found an appropriate entry */
1390 list_del_init(&iter
->list
);
1391 fi
->counters
[FIRQ_CNTR_IO
] -= 1;
1392 if (list_empty(isc_list
))
1393 clear_bit(IRQ_PEND_IO_ISC_0
+ isc
, &fi
->pending_irqs
);
1394 spin_unlock(&fi
->lock
);
1397 spin_unlock(&fi
->lock
);
1402 * Dequeue and return an I/O interrupt matching any of the interruption
1403 * subclasses as designated by the isc mask in cr6 and the schid (if != 0).
1405 struct kvm_s390_interrupt_info
*kvm_s390_get_io_int(struct kvm
*kvm
,
1406 u64 isc_mask
, u32 schid
)
1408 struct kvm_s390_interrupt_info
*inti
= NULL
;
1411 for (isc
= 0; isc
<= MAX_ISC
&& !inti
; isc
++) {
1412 if (isc_mask
& isc_to_isc_bits(isc
))
1413 inti
= get_io_int(kvm
, isc
, schid
);
1418 #define SCCB_MASK 0xFFFFFFF8
1419 #define SCCB_EVENT_PENDING 0x3
1421 static int __inject_service(struct kvm
*kvm
,
1422 struct kvm_s390_interrupt_info
*inti
)
1424 struct kvm_s390_float_interrupt
*fi
= &kvm
->arch
.float_int
;
1426 spin_lock(&fi
->lock
);
1427 fi
->srv_signal
.ext_params
|= inti
->ext
.ext_params
& SCCB_EVENT_PENDING
;
1429 * Early versions of the QEMU s390 bios will inject several
1430 * service interrupts after another without handling a
1431 * condition code indicating busy.
1432 * We will silently ignore those superfluous sccb values.
1433 * A future version of QEMU will take care of serialization
1436 if (fi
->srv_signal
.ext_params
& SCCB_MASK
)
1438 fi
->srv_signal
.ext_params
|= inti
->ext
.ext_params
& SCCB_MASK
;
1439 set_bit(IRQ_PEND_EXT_SERVICE
, &fi
->pending_irqs
);
1441 spin_unlock(&fi
->lock
);
1446 static int __inject_virtio(struct kvm
*kvm
,
1447 struct kvm_s390_interrupt_info
*inti
)
1449 struct kvm_s390_float_interrupt
*fi
= &kvm
->arch
.float_int
;
1451 spin_lock(&fi
->lock
);
1452 if (fi
->counters
[FIRQ_CNTR_VIRTIO
] >= KVM_S390_MAX_VIRTIO_IRQS
) {
1453 spin_unlock(&fi
->lock
);
1456 fi
->counters
[FIRQ_CNTR_VIRTIO
] += 1;
1457 list_add_tail(&inti
->list
, &fi
->lists
[FIRQ_LIST_VIRTIO
]);
1458 set_bit(IRQ_PEND_VIRTIO
, &fi
->pending_irqs
);
1459 spin_unlock(&fi
->lock
);
1463 static int __inject_pfault_done(struct kvm
*kvm
,
1464 struct kvm_s390_interrupt_info
*inti
)
1466 struct kvm_s390_float_interrupt
*fi
= &kvm
->arch
.float_int
;
1468 spin_lock(&fi
->lock
);
1469 if (fi
->counters
[FIRQ_CNTR_PFAULT
] >=
1470 (ASYNC_PF_PER_VCPU
* KVM_MAX_VCPUS
)) {
1471 spin_unlock(&fi
->lock
);
1474 fi
->counters
[FIRQ_CNTR_PFAULT
] += 1;
1475 list_add_tail(&inti
->list
, &fi
->lists
[FIRQ_LIST_PFAULT
]);
1476 set_bit(IRQ_PEND_PFAULT_DONE
, &fi
->pending_irqs
);
1477 spin_unlock(&fi
->lock
);
1481 #define CR_PENDING_SUBCLASS 28
1482 static int __inject_float_mchk(struct kvm
*kvm
,
1483 struct kvm_s390_interrupt_info
*inti
)
1485 struct kvm_s390_float_interrupt
*fi
= &kvm
->arch
.float_int
;
1487 spin_lock(&fi
->lock
);
1488 fi
->mchk
.cr14
|= inti
->mchk
.cr14
& (1UL << CR_PENDING_SUBCLASS
);
1489 fi
->mchk
.mcic
|= inti
->mchk
.mcic
;
1490 set_bit(IRQ_PEND_MCHK_REP
, &fi
->pending_irqs
);
1491 spin_unlock(&fi
->lock
);
1496 static int __inject_io(struct kvm
*kvm
, struct kvm_s390_interrupt_info
*inti
)
1498 struct kvm_s390_float_interrupt
*fi
;
1499 struct list_head
*list
;
1502 fi
= &kvm
->arch
.float_int
;
1503 spin_lock(&fi
->lock
);
1504 if (fi
->counters
[FIRQ_CNTR_IO
] >= KVM_S390_MAX_FLOAT_IRQS
) {
1505 spin_unlock(&fi
->lock
);
1508 fi
->counters
[FIRQ_CNTR_IO
] += 1;
1510 if (inti
->type
& KVM_S390_INT_IO_AI_MASK
)
1511 VM_EVENT(kvm
, 4, "%s", "inject: I/O (AI)");
1513 VM_EVENT(kvm
, 4, "inject: I/O %x ss %x schid %04x",
1514 inti
->io
.subchannel_id
>> 8,
1515 inti
->io
.subchannel_id
>> 1 & 0x3,
1516 inti
->io
.subchannel_nr
);
1517 isc
= int_word_to_isc(inti
->io
.io_int_word
);
1518 list
= &fi
->lists
[FIRQ_LIST_IO_ISC_0
+ isc
];
1519 list_add_tail(&inti
->list
, list
);
1520 set_bit(IRQ_PEND_IO_ISC_0
+ isc
, &fi
->pending_irqs
);
1521 spin_unlock(&fi
->lock
);
1526 * Find a destination VCPU for a floating irq and kick it.
1528 static void __floating_irq_kick(struct kvm
*kvm
, u64 type
)
1530 struct kvm_s390_float_interrupt
*fi
= &kvm
->arch
.float_int
;
1531 struct kvm_s390_local_interrupt
*li
;
1532 struct kvm_vcpu
*dst_vcpu
;
1533 int sigcpu
, online_vcpus
, nr_tries
= 0;
1535 online_vcpus
= atomic_read(&kvm
->online_vcpus
);
1539 /* find idle VCPUs first, then round robin */
1540 sigcpu
= find_first_bit(fi
->idle_mask
, online_vcpus
);
1541 if (sigcpu
== online_vcpus
) {
1543 sigcpu
= fi
->next_rr_cpu
;
1544 fi
->next_rr_cpu
= (fi
->next_rr_cpu
+ 1) % online_vcpus
;
1545 /* avoid endless loops if all vcpus are stopped */
1546 if (nr_tries
++ >= online_vcpus
)
1548 } while (is_vcpu_stopped(kvm_get_vcpu(kvm
, sigcpu
)));
1550 dst_vcpu
= kvm_get_vcpu(kvm
, sigcpu
);
1552 /* make the VCPU drop out of the SIE, or wake it up if sleeping */
1553 li
= &dst_vcpu
->arch
.local_int
;
1554 spin_lock(&li
->lock
);
1557 atomic_or(CPUSTAT_STOP_INT
, li
->cpuflags
);
1559 case KVM_S390_INT_IO_MIN
...KVM_S390_INT_IO_MAX
:
1560 atomic_or(CPUSTAT_IO_INT
, li
->cpuflags
);
1563 atomic_or(CPUSTAT_EXT_INT
, li
->cpuflags
);
1566 spin_unlock(&li
->lock
);
1567 kvm_s390_vcpu_wakeup(dst_vcpu
);
1570 static int __inject_vm(struct kvm
*kvm
, struct kvm_s390_interrupt_info
*inti
)
1572 u64 type
= READ_ONCE(inti
->type
);
1577 rc
= __inject_float_mchk(kvm
, inti
);
1579 case KVM_S390_INT_VIRTIO
:
1580 rc
= __inject_virtio(kvm
, inti
);
1582 case KVM_S390_INT_SERVICE
:
1583 rc
= __inject_service(kvm
, inti
);
1585 case KVM_S390_INT_PFAULT_DONE
:
1586 rc
= __inject_pfault_done(kvm
, inti
);
1588 case KVM_S390_INT_IO_MIN
...KVM_S390_INT_IO_MAX
:
1589 rc
= __inject_io(kvm
, inti
);
1597 __floating_irq_kick(kvm
, type
);
1601 int kvm_s390_inject_vm(struct kvm
*kvm
,
1602 struct kvm_s390_interrupt
*s390int
)
1604 struct kvm_s390_interrupt_info
*inti
;
1607 inti
= kzalloc(sizeof(*inti
), GFP_KERNEL
);
1611 inti
->type
= s390int
->type
;
1612 switch (inti
->type
) {
1613 case KVM_S390_INT_VIRTIO
:
1614 VM_EVENT(kvm
, 5, "inject: virtio parm:%x,parm64:%llx",
1615 s390int
->parm
, s390int
->parm64
);
1616 inti
->ext
.ext_params
= s390int
->parm
;
1617 inti
->ext
.ext_params2
= s390int
->parm64
;
1619 case KVM_S390_INT_SERVICE
:
1620 VM_EVENT(kvm
, 4, "inject: sclp parm:%x", s390int
->parm
);
1621 inti
->ext
.ext_params
= s390int
->parm
;
1623 case KVM_S390_INT_PFAULT_DONE
:
1624 inti
->ext
.ext_params2
= s390int
->parm64
;
1627 VM_EVENT(kvm
, 3, "inject: machine check mcic 0x%llx",
1629 inti
->mchk
.cr14
= s390int
->parm
; /* upper bits are not used */
1630 inti
->mchk
.mcic
= s390int
->parm64
;
1632 case KVM_S390_INT_IO_MIN
...KVM_S390_INT_IO_MAX
:
1633 inti
->io
.subchannel_id
= s390int
->parm
>> 16;
1634 inti
->io
.subchannel_nr
= s390int
->parm
& 0x0000ffffu
;
1635 inti
->io
.io_int_parm
= s390int
->parm64
>> 32;
1636 inti
->io
.io_int_word
= s390int
->parm64
& 0x00000000ffffffffull
;
1642 trace_kvm_s390_inject_vm(s390int
->type
, s390int
->parm
, s390int
->parm64
,
1645 rc
= __inject_vm(kvm
, inti
);
1651 int kvm_s390_reinject_io_int(struct kvm
*kvm
,
1652 struct kvm_s390_interrupt_info
*inti
)
1654 return __inject_vm(kvm
, inti
);
1657 int s390int_to_s390irq(struct kvm_s390_interrupt
*s390int
,
1658 struct kvm_s390_irq
*irq
)
1660 irq
->type
= s390int
->type
;
1661 switch (irq
->type
) {
1662 case KVM_S390_PROGRAM_INT
:
1663 if (s390int
->parm
& 0xffff0000)
1665 irq
->u
.pgm
.code
= s390int
->parm
;
1667 case KVM_S390_SIGP_SET_PREFIX
:
1668 irq
->u
.prefix
.address
= s390int
->parm
;
1670 case KVM_S390_SIGP_STOP
:
1671 irq
->u
.stop
.flags
= s390int
->parm
;
1673 case KVM_S390_INT_EXTERNAL_CALL
:
1674 if (s390int
->parm
& 0xffff0000)
1676 irq
->u
.extcall
.code
= s390int
->parm
;
1678 case KVM_S390_INT_EMERGENCY
:
1679 if (s390int
->parm
& 0xffff0000)
1681 irq
->u
.emerg
.code
= s390int
->parm
;
1684 irq
->u
.mchk
.mcic
= s390int
->parm64
;
1690 int kvm_s390_is_stop_irq_pending(struct kvm_vcpu
*vcpu
)
1692 struct kvm_s390_local_interrupt
*li
= &vcpu
->arch
.local_int
;
1694 return test_bit(IRQ_PEND_SIGP_STOP
, &li
->pending_irqs
);
1697 void kvm_s390_clear_stop_irq(struct kvm_vcpu
*vcpu
)
1699 struct kvm_s390_local_interrupt
*li
= &vcpu
->arch
.local_int
;
1701 spin_lock(&li
->lock
);
1702 li
->irq
.stop
.flags
= 0;
1703 clear_bit(IRQ_PEND_SIGP_STOP
, &li
->pending_irqs
);
1704 spin_unlock(&li
->lock
);
1707 static int do_inject_vcpu(struct kvm_vcpu
*vcpu
, struct kvm_s390_irq
*irq
)
1711 switch (irq
->type
) {
1712 case KVM_S390_PROGRAM_INT
:
1713 rc
= __inject_prog(vcpu
, irq
);
1715 case KVM_S390_SIGP_SET_PREFIX
:
1716 rc
= __inject_set_prefix(vcpu
, irq
);
1718 case KVM_S390_SIGP_STOP
:
1719 rc
= __inject_sigp_stop(vcpu
, irq
);
1721 case KVM_S390_RESTART
:
1722 rc
= __inject_sigp_restart(vcpu
, irq
);
1724 case KVM_S390_INT_CLOCK_COMP
:
1725 rc
= __inject_ckc(vcpu
);
1727 case KVM_S390_INT_CPU_TIMER
:
1728 rc
= __inject_cpu_timer(vcpu
);
1730 case KVM_S390_INT_EXTERNAL_CALL
:
1731 rc
= __inject_extcall(vcpu
, irq
);
1733 case KVM_S390_INT_EMERGENCY
:
1734 rc
= __inject_sigp_emergency(vcpu
, irq
);
1737 rc
= __inject_mchk(vcpu
, irq
);
1739 case KVM_S390_INT_PFAULT_INIT
:
1740 rc
= __inject_pfault_init(vcpu
, irq
);
1742 case KVM_S390_INT_VIRTIO
:
1743 case KVM_S390_INT_SERVICE
:
1744 case KVM_S390_INT_IO_MIN
...KVM_S390_INT_IO_MAX
:
1752 int kvm_s390_inject_vcpu(struct kvm_vcpu
*vcpu
, struct kvm_s390_irq
*irq
)
1754 struct kvm_s390_local_interrupt
*li
= &vcpu
->arch
.local_int
;
1757 spin_lock(&li
->lock
);
1758 rc
= do_inject_vcpu(vcpu
, irq
);
1759 spin_unlock(&li
->lock
);
1761 kvm_s390_vcpu_wakeup(vcpu
);
1765 static inline void clear_irq_list(struct list_head
*_list
)
1767 struct kvm_s390_interrupt_info
*inti
, *n
;
1769 list_for_each_entry_safe(inti
, n
, _list
, list
) {
1770 list_del(&inti
->list
);
1775 static void inti_to_irq(struct kvm_s390_interrupt_info
*inti
,
1776 struct kvm_s390_irq
*irq
)
1778 irq
->type
= inti
->type
;
1779 switch (inti
->type
) {
1780 case KVM_S390_INT_PFAULT_INIT
:
1781 case KVM_S390_INT_PFAULT_DONE
:
1782 case KVM_S390_INT_VIRTIO
:
1783 irq
->u
.ext
= inti
->ext
;
1785 case KVM_S390_INT_IO_MIN
...KVM_S390_INT_IO_MAX
:
1786 irq
->u
.io
= inti
->io
;
1791 void kvm_s390_clear_float_irqs(struct kvm
*kvm
)
1793 struct kvm_s390_float_interrupt
*fi
= &kvm
->arch
.float_int
;
1796 spin_lock(&fi
->lock
);
1797 fi
->pending_irqs
= 0;
1798 memset(&fi
->srv_signal
, 0, sizeof(fi
->srv_signal
));
1799 memset(&fi
->mchk
, 0, sizeof(fi
->mchk
));
1800 for (i
= 0; i
< FIRQ_LIST_COUNT
; i
++)
1801 clear_irq_list(&fi
->lists
[i
]);
1802 for (i
= 0; i
< FIRQ_MAX_COUNT
; i
++)
1803 fi
->counters
[i
] = 0;
1804 spin_unlock(&fi
->lock
);
1807 static int get_all_floating_irqs(struct kvm
*kvm
, u8 __user
*usrbuf
, u64 len
)
1809 struct kvm_s390_interrupt_info
*inti
;
1810 struct kvm_s390_float_interrupt
*fi
;
1811 struct kvm_s390_irq
*buf
;
1812 struct kvm_s390_irq
*irq
;
1818 if (len
> KVM_S390_FLIC_MAX_BUFFER
|| len
== 0)
1822 * We are already using -ENOMEM to signal
1823 * userspace it may retry with a bigger buffer,
1824 * so we need to use something else for this case
1830 max_irqs
= len
/ sizeof(struct kvm_s390_irq
);
1832 fi
= &kvm
->arch
.float_int
;
1833 spin_lock(&fi
->lock
);
1834 for (i
= 0; i
< FIRQ_LIST_COUNT
; i
++) {
1835 list_for_each_entry(inti
, &fi
->lists
[i
], list
) {
1836 if (n
== max_irqs
) {
1837 /* signal userspace to try again */
1841 inti_to_irq(inti
, &buf
[n
]);
1845 if (test_bit(IRQ_PEND_EXT_SERVICE
, &fi
->pending_irqs
)) {
1846 if (n
== max_irqs
) {
1847 /* signal userspace to try again */
1851 irq
= (struct kvm_s390_irq
*) &buf
[n
];
1852 irq
->type
= KVM_S390_INT_SERVICE
;
1853 irq
->u
.ext
= fi
->srv_signal
;
1856 if (test_bit(IRQ_PEND_MCHK_REP
, &fi
->pending_irqs
)) {
1857 if (n
== max_irqs
) {
1858 /* signal userspace to try again */
1862 irq
= (struct kvm_s390_irq
*) &buf
[n
];
1863 irq
->type
= KVM_S390_MCHK
;
1864 irq
->u
.mchk
= fi
->mchk
;
1869 spin_unlock(&fi
->lock
);
1870 if (!ret
&& n
> 0) {
1871 if (copy_to_user(usrbuf
, buf
, sizeof(struct kvm_s390_irq
) * n
))
1876 return ret
< 0 ? ret
: n
;
1879 static int flic_get_attr(struct kvm_device
*dev
, struct kvm_device_attr
*attr
)
1883 switch (attr
->group
) {
1884 case KVM_DEV_FLIC_GET_ALL_IRQS
:
1885 r
= get_all_floating_irqs(dev
->kvm
, (u8 __user
*) attr
->addr
,
1895 static inline int copy_irq_from_user(struct kvm_s390_interrupt_info
*inti
,
1898 struct kvm_s390_irq __user
*uptr
= (struct kvm_s390_irq __user
*) addr
;
1899 void *target
= NULL
;
1900 void __user
*source
;
1903 if (get_user(inti
->type
, (u64 __user
*)addr
))
1906 switch (inti
->type
) {
1907 case KVM_S390_INT_PFAULT_INIT
:
1908 case KVM_S390_INT_PFAULT_DONE
:
1909 case KVM_S390_INT_VIRTIO
:
1910 case KVM_S390_INT_SERVICE
:
1911 target
= (void *) &inti
->ext
;
1912 source
= &uptr
->u
.ext
;
1913 size
= sizeof(inti
->ext
);
1915 case KVM_S390_INT_IO_MIN
...KVM_S390_INT_IO_MAX
:
1916 target
= (void *) &inti
->io
;
1917 source
= &uptr
->u
.io
;
1918 size
= sizeof(inti
->io
);
1921 target
= (void *) &inti
->mchk
;
1922 source
= &uptr
->u
.mchk
;
1923 size
= sizeof(inti
->mchk
);
1929 if (copy_from_user(target
, source
, size
))
1935 static int enqueue_floating_irq(struct kvm_device
*dev
,
1936 struct kvm_device_attr
*attr
)
1938 struct kvm_s390_interrupt_info
*inti
= NULL
;
1940 int len
= attr
->attr
;
1942 if (len
% sizeof(struct kvm_s390_irq
) != 0)
1944 else if (len
> KVM_S390_FLIC_MAX_BUFFER
)
1947 while (len
>= sizeof(struct kvm_s390_irq
)) {
1948 inti
= kzalloc(sizeof(*inti
), GFP_KERNEL
);
1952 r
= copy_irq_from_user(inti
, attr
->addr
);
1957 r
= __inject_vm(dev
->kvm
, inti
);
1962 len
-= sizeof(struct kvm_s390_irq
);
1963 attr
->addr
+= sizeof(struct kvm_s390_irq
);
1969 static struct s390_io_adapter
*get_io_adapter(struct kvm
*kvm
, unsigned int id
)
1971 if (id
>= MAX_S390_IO_ADAPTERS
)
1973 return kvm
->arch
.adapters
[id
];
1976 static int register_io_adapter(struct kvm_device
*dev
,
1977 struct kvm_device_attr
*attr
)
1979 struct s390_io_adapter
*adapter
;
1980 struct kvm_s390_io_adapter adapter_info
;
1982 if (copy_from_user(&adapter_info
,
1983 (void __user
*)attr
->addr
, sizeof(adapter_info
)))
1986 if ((adapter_info
.id
>= MAX_S390_IO_ADAPTERS
) ||
1987 (dev
->kvm
->arch
.adapters
[adapter_info
.id
] != NULL
))
1990 adapter
= kzalloc(sizeof(*adapter
), GFP_KERNEL
);
1994 INIT_LIST_HEAD(&adapter
->maps
);
1995 init_rwsem(&adapter
->maps_lock
);
1996 atomic_set(&adapter
->nr_maps
, 0);
1997 adapter
->id
= adapter_info
.id
;
1998 adapter
->isc
= adapter_info
.isc
;
1999 adapter
->maskable
= adapter_info
.maskable
;
2000 adapter
->masked
= false;
2001 adapter
->swap
= adapter_info
.swap
;
2002 adapter
->suppressible
= (adapter_info
.flags
) &
2003 KVM_S390_ADAPTER_SUPPRESSIBLE
;
2004 dev
->kvm
->arch
.adapters
[adapter
->id
] = adapter
;
2009 int kvm_s390_mask_adapter(struct kvm
*kvm
, unsigned int id
, bool masked
)
2012 struct s390_io_adapter
*adapter
= get_io_adapter(kvm
, id
);
2014 if (!adapter
|| !adapter
->maskable
)
2016 ret
= adapter
->masked
;
2017 adapter
->masked
= masked
;
2021 static int kvm_s390_adapter_map(struct kvm
*kvm
, unsigned int id
, __u64 addr
)
2023 struct s390_io_adapter
*adapter
= get_io_adapter(kvm
, id
);
2024 struct s390_map_info
*map
;
2027 if (!adapter
|| !addr
)
2030 map
= kzalloc(sizeof(*map
), GFP_KERNEL
);
2035 INIT_LIST_HEAD(&map
->list
);
2036 map
->guest_addr
= addr
;
2037 map
->addr
= gmap_translate(kvm
->arch
.gmap
, addr
);
2038 if (map
->addr
== -EFAULT
) {
2042 ret
= get_user_pages_fast(map
->addr
, 1, 1, &map
->page
);
2046 down_write(&adapter
->maps_lock
);
2047 if (atomic_inc_return(&adapter
->nr_maps
) < MAX_S390_ADAPTER_MAPS
) {
2048 list_add_tail(&map
->list
, &adapter
->maps
);
2051 put_page(map
->page
);
2054 up_write(&adapter
->maps_lock
);
2061 static int kvm_s390_adapter_unmap(struct kvm
*kvm
, unsigned int id
, __u64 addr
)
2063 struct s390_io_adapter
*adapter
= get_io_adapter(kvm
, id
);
2064 struct s390_map_info
*map
, *tmp
;
2067 if (!adapter
|| !addr
)
2070 down_write(&adapter
->maps_lock
);
2071 list_for_each_entry_safe(map
, tmp
, &adapter
->maps
, list
) {
2072 if (map
->guest_addr
== addr
) {
2074 atomic_dec(&adapter
->nr_maps
);
2075 list_del(&map
->list
);
2076 put_page(map
->page
);
2081 up_write(&adapter
->maps_lock
);
2083 return found
? 0 : -EINVAL
;
2086 void kvm_s390_destroy_adapters(struct kvm
*kvm
)
2089 struct s390_map_info
*map
, *tmp
;
2091 for (i
= 0; i
< MAX_S390_IO_ADAPTERS
; i
++) {
2092 if (!kvm
->arch
.adapters
[i
])
2094 list_for_each_entry_safe(map
, tmp
,
2095 &kvm
->arch
.adapters
[i
]->maps
, list
) {
2096 list_del(&map
->list
);
2097 put_page(map
->page
);
2100 kfree(kvm
->arch
.adapters
[i
]);
2104 static int modify_io_adapter(struct kvm_device
*dev
,
2105 struct kvm_device_attr
*attr
)
2107 struct kvm_s390_io_adapter_req req
;
2108 struct s390_io_adapter
*adapter
;
2111 if (copy_from_user(&req
, (void __user
*)attr
->addr
, sizeof(req
)))
2114 adapter
= get_io_adapter(dev
->kvm
, req
.id
);
2118 case KVM_S390_IO_ADAPTER_MASK
:
2119 ret
= kvm_s390_mask_adapter(dev
->kvm
, req
.id
, req
.mask
);
2123 case KVM_S390_IO_ADAPTER_MAP
:
2124 ret
= kvm_s390_adapter_map(dev
->kvm
, req
.id
, req
.addr
);
2126 case KVM_S390_IO_ADAPTER_UNMAP
:
2127 ret
= kvm_s390_adapter_unmap(dev
->kvm
, req
.id
, req
.addr
);
2136 static int clear_io_irq(struct kvm
*kvm
, struct kvm_device_attr
*attr
)
2139 const u64 isc_mask
= 0xffUL
<< 24; /* all iscs set */
2144 if (attr
->attr
!= sizeof(schid
))
2146 if (copy_from_user(&schid
, (void __user
*) attr
->addr
, sizeof(schid
)))
2148 kfree(kvm_s390_get_io_int(kvm
, isc_mask
, schid
));
2150 * If userspace is conforming to the architecture, we can have at most
2151 * one pending I/O interrupt per subchannel, so this is effectively a
2157 static int modify_ais_mode(struct kvm
*kvm
, struct kvm_device_attr
*attr
)
2159 struct kvm_s390_float_interrupt
*fi
= &kvm
->arch
.float_int
;
2160 struct kvm_s390_ais_req req
;
2163 if (!test_kvm_facility(kvm
, 72))
2166 if (copy_from_user(&req
, (void __user
*)attr
->addr
, sizeof(req
)))
2169 if (req
.isc
> MAX_ISC
)
2172 trace_kvm_s390_modify_ais_mode(req
.isc
,
2173 (fi
->simm
& AIS_MODE_MASK(req
.isc
)) ?
2174 (fi
->nimm
& AIS_MODE_MASK(req
.isc
)) ?
2175 2 : KVM_S390_AIS_MODE_SINGLE
:
2176 KVM_S390_AIS_MODE_ALL
, req
.mode
);
2178 mutex_lock(&fi
->ais_lock
);
2180 case KVM_S390_AIS_MODE_ALL
:
2181 fi
->simm
&= ~AIS_MODE_MASK(req
.isc
);
2182 fi
->nimm
&= ~AIS_MODE_MASK(req
.isc
);
2184 case KVM_S390_AIS_MODE_SINGLE
:
2185 fi
->simm
|= AIS_MODE_MASK(req
.isc
);
2186 fi
->nimm
&= ~AIS_MODE_MASK(req
.isc
);
2191 mutex_unlock(&fi
->ais_lock
);
2196 static int kvm_s390_inject_airq(struct kvm
*kvm
,
2197 struct s390_io_adapter
*adapter
)
2199 struct kvm_s390_float_interrupt
*fi
= &kvm
->arch
.float_int
;
2200 struct kvm_s390_interrupt s390int
= {
2201 .type
= KVM_S390_INT_IO(1, 0, 0, 0),
2203 .parm64
= (adapter
->isc
<< 27) | 0x80000000,
2207 if (!test_kvm_facility(kvm
, 72) || !adapter
->suppressible
)
2208 return kvm_s390_inject_vm(kvm
, &s390int
);
2210 mutex_lock(&fi
->ais_lock
);
2211 if (fi
->nimm
& AIS_MODE_MASK(adapter
->isc
)) {
2212 trace_kvm_s390_airq_suppressed(adapter
->id
, adapter
->isc
);
2216 ret
= kvm_s390_inject_vm(kvm
, &s390int
);
2217 if (!ret
&& (fi
->simm
& AIS_MODE_MASK(adapter
->isc
))) {
2218 fi
->nimm
|= AIS_MODE_MASK(adapter
->isc
);
2219 trace_kvm_s390_modify_ais_mode(adapter
->isc
,
2220 KVM_S390_AIS_MODE_SINGLE
, 2);
2223 mutex_unlock(&fi
->ais_lock
);
2227 static int flic_inject_airq(struct kvm
*kvm
, struct kvm_device_attr
*attr
)
2229 unsigned int id
= attr
->attr
;
2230 struct s390_io_adapter
*adapter
= get_io_adapter(kvm
, id
);
2235 return kvm_s390_inject_airq(kvm
, adapter
);
2238 static int flic_set_attr(struct kvm_device
*dev
, struct kvm_device_attr
*attr
)
2242 struct kvm_vcpu
*vcpu
;
2244 switch (attr
->group
) {
2245 case KVM_DEV_FLIC_ENQUEUE
:
2246 r
= enqueue_floating_irq(dev
, attr
);
2248 case KVM_DEV_FLIC_CLEAR_IRQS
:
2249 kvm_s390_clear_float_irqs(dev
->kvm
);
2251 case KVM_DEV_FLIC_APF_ENABLE
:
2252 dev
->kvm
->arch
.gmap
->pfault_enabled
= 1;
2254 case KVM_DEV_FLIC_APF_DISABLE_WAIT
:
2255 dev
->kvm
->arch
.gmap
->pfault_enabled
= 0;
2257 * Make sure no async faults are in transition when
2258 * clearing the queues. So we don't need to worry
2259 * about late coming workers.
2261 synchronize_srcu(&dev
->kvm
->srcu
);
2262 kvm_for_each_vcpu(i
, vcpu
, dev
->kvm
)
2263 kvm_clear_async_pf_completion_queue(vcpu
);
2265 case KVM_DEV_FLIC_ADAPTER_REGISTER
:
2266 r
= register_io_adapter(dev
, attr
);
2268 case KVM_DEV_FLIC_ADAPTER_MODIFY
:
2269 r
= modify_io_adapter(dev
, attr
);
2271 case KVM_DEV_FLIC_CLEAR_IO_IRQ
:
2272 r
= clear_io_irq(dev
->kvm
, attr
);
2274 case KVM_DEV_FLIC_AISM
:
2275 r
= modify_ais_mode(dev
->kvm
, attr
);
2277 case KVM_DEV_FLIC_AIRQ_INJECT
:
2278 r
= flic_inject_airq(dev
->kvm
, attr
);
2287 static int flic_has_attr(struct kvm_device
*dev
,
2288 struct kvm_device_attr
*attr
)
2290 switch (attr
->group
) {
2291 case KVM_DEV_FLIC_GET_ALL_IRQS
:
2292 case KVM_DEV_FLIC_ENQUEUE
:
2293 case KVM_DEV_FLIC_CLEAR_IRQS
:
2294 case KVM_DEV_FLIC_APF_ENABLE
:
2295 case KVM_DEV_FLIC_APF_DISABLE_WAIT
:
2296 case KVM_DEV_FLIC_ADAPTER_REGISTER
:
2297 case KVM_DEV_FLIC_ADAPTER_MODIFY
:
2298 case KVM_DEV_FLIC_CLEAR_IO_IRQ
:
2299 case KVM_DEV_FLIC_AISM
:
2300 case KVM_DEV_FLIC_AIRQ_INJECT
:
2306 static int flic_create(struct kvm_device
*dev
, u32 type
)
2310 if (dev
->kvm
->arch
.flic
)
2312 dev
->kvm
->arch
.flic
= dev
;
2316 static void flic_destroy(struct kvm_device
*dev
)
2318 dev
->kvm
->arch
.flic
= NULL
;
2322 /* s390 floating irq controller (flic) */
2323 struct kvm_device_ops kvm_flic_ops
= {
2325 .get_attr
= flic_get_attr
,
2326 .set_attr
= flic_set_attr
,
2327 .has_attr
= flic_has_attr
,
2328 .create
= flic_create
,
2329 .destroy
= flic_destroy
,
2332 static unsigned long get_ind_bit(__u64 addr
, unsigned long bit_nr
, bool swap
)
2336 bit
= bit_nr
+ (addr
% PAGE_SIZE
) * 8;
2338 return swap
? (bit
^ (BITS_PER_LONG
- 1)) : bit
;
2341 static struct s390_map_info
*get_map_info(struct s390_io_adapter
*adapter
,
2344 struct s390_map_info
*map
;
2349 list_for_each_entry(map
, &adapter
->maps
, list
) {
2350 if (map
->guest_addr
== addr
)
2356 static int adapter_indicators_set(struct kvm
*kvm
,
2357 struct s390_io_adapter
*adapter
,
2358 struct kvm_s390_adapter_int
*adapter_int
)
2361 int summary_set
, idx
;
2362 struct s390_map_info
*info
;
2365 info
= get_map_info(adapter
, adapter_int
->ind_addr
);
2368 map
= page_address(info
->page
);
2369 bit
= get_ind_bit(info
->addr
, adapter_int
->ind_offset
, adapter
->swap
);
2371 idx
= srcu_read_lock(&kvm
->srcu
);
2372 mark_page_dirty(kvm
, info
->guest_addr
>> PAGE_SHIFT
);
2373 set_page_dirty_lock(info
->page
);
2374 info
= get_map_info(adapter
, adapter_int
->summary_addr
);
2376 srcu_read_unlock(&kvm
->srcu
, idx
);
2379 map
= page_address(info
->page
);
2380 bit
= get_ind_bit(info
->addr
, adapter_int
->summary_offset
,
2382 summary_set
= test_and_set_bit(bit
, map
);
2383 mark_page_dirty(kvm
, info
->guest_addr
>> PAGE_SHIFT
);
2384 set_page_dirty_lock(info
->page
);
2385 srcu_read_unlock(&kvm
->srcu
, idx
);
2386 return summary_set
? 0 : 1;
2390 * < 0 - not injected due to error
2391 * = 0 - coalesced, summary indicator already active
2392 * > 0 - injected interrupt
2394 static int set_adapter_int(struct kvm_kernel_irq_routing_entry
*e
,
2395 struct kvm
*kvm
, int irq_source_id
, int level
,
2399 struct s390_io_adapter
*adapter
;
2401 /* We're only interested in the 0->1 transition. */
2404 adapter
= get_io_adapter(kvm
, e
->adapter
.adapter_id
);
2407 down_read(&adapter
->maps_lock
);
2408 ret
= adapter_indicators_set(kvm
, adapter
, &e
->adapter
);
2409 up_read(&adapter
->maps_lock
);
2410 if ((ret
> 0) && !adapter
->masked
) {
2411 ret
= kvm_s390_inject_airq(kvm
, adapter
);
2418 int kvm_set_routing_entry(struct kvm
*kvm
,
2419 struct kvm_kernel_irq_routing_entry
*e
,
2420 const struct kvm_irq_routing_entry
*ue
)
2425 case KVM_IRQ_ROUTING_S390_ADAPTER
:
2426 e
->set
= set_adapter_int
;
2427 e
->adapter
.summary_addr
= ue
->u
.adapter
.summary_addr
;
2428 e
->adapter
.ind_addr
= ue
->u
.adapter
.ind_addr
;
2429 e
->adapter
.summary_offset
= ue
->u
.adapter
.summary_offset
;
2430 e
->adapter
.ind_offset
= ue
->u
.adapter
.ind_offset
;
2431 e
->adapter
.adapter_id
= ue
->u
.adapter
.adapter_id
;
2441 int kvm_set_msi(struct kvm_kernel_irq_routing_entry
*e
, struct kvm
*kvm
,
2442 int irq_source_id
, int level
, bool line_status
)
2447 int kvm_s390_set_irq_state(struct kvm_vcpu
*vcpu
, void __user
*irqstate
, int len
)
2449 struct kvm_s390_local_interrupt
*li
= &vcpu
->arch
.local_int
;
2450 struct kvm_s390_irq
*buf
;
2458 if (copy_from_user((void *) buf
, irqstate
, len
)) {
2464 * Don't allow setting the interrupt state
2465 * when there are already interrupts pending
2467 spin_lock(&li
->lock
);
2468 if (li
->pending_irqs
) {
2473 for (n
= 0; n
< len
/ sizeof(*buf
); n
++) {
2474 r
= do_inject_vcpu(vcpu
, &buf
[n
]);
2480 spin_unlock(&li
->lock
);
2487 static void store_local_irq(struct kvm_s390_local_interrupt
*li
,
2488 struct kvm_s390_irq
*irq
,
2489 unsigned long irq_type
)
2492 case IRQ_PEND_MCHK_EX
:
2493 case IRQ_PEND_MCHK_REP
:
2494 irq
->type
= KVM_S390_MCHK
;
2495 irq
->u
.mchk
= li
->irq
.mchk
;
2498 irq
->type
= KVM_S390_PROGRAM_INT
;
2499 irq
->u
.pgm
= li
->irq
.pgm
;
2501 case IRQ_PEND_PFAULT_INIT
:
2502 irq
->type
= KVM_S390_INT_PFAULT_INIT
;
2503 irq
->u
.ext
= li
->irq
.ext
;
2505 case IRQ_PEND_EXT_EXTERNAL
:
2506 irq
->type
= KVM_S390_INT_EXTERNAL_CALL
;
2507 irq
->u
.extcall
= li
->irq
.extcall
;
2509 case IRQ_PEND_EXT_CLOCK_COMP
:
2510 irq
->type
= KVM_S390_INT_CLOCK_COMP
;
2512 case IRQ_PEND_EXT_CPU_TIMER
:
2513 irq
->type
= KVM_S390_INT_CPU_TIMER
;
2515 case IRQ_PEND_SIGP_STOP
:
2516 irq
->type
= KVM_S390_SIGP_STOP
;
2517 irq
->u
.stop
= li
->irq
.stop
;
2519 case IRQ_PEND_RESTART
:
2520 irq
->type
= KVM_S390_RESTART
;
2522 case IRQ_PEND_SET_PREFIX
:
2523 irq
->type
= KVM_S390_SIGP_SET_PREFIX
;
2524 irq
->u
.prefix
= li
->irq
.prefix
;
2529 int kvm_s390_get_irq_state(struct kvm_vcpu
*vcpu
, __u8 __user
*buf
, int len
)
2532 unsigned long sigp_emerg_pending
[BITS_TO_LONGS(KVM_MAX_VCPUS
)];
2533 struct kvm_s390_local_interrupt
*li
= &vcpu
->arch
.local_int
;
2534 unsigned long pending_irqs
;
2535 struct kvm_s390_irq irq
;
2536 unsigned long irq_type
;
2540 spin_lock(&li
->lock
);
2541 pending_irqs
= li
->pending_irqs
;
2542 memcpy(&sigp_emerg_pending
, &li
->sigp_emerg_pending
,
2543 sizeof(sigp_emerg_pending
));
2544 spin_unlock(&li
->lock
);
2546 for_each_set_bit(irq_type
, &pending_irqs
, IRQ_PEND_COUNT
) {
2547 memset(&irq
, 0, sizeof(irq
));
2548 if (irq_type
== IRQ_PEND_EXT_EMERGENCY
)
2550 if (n
+ sizeof(irq
) > len
)
2552 store_local_irq(&vcpu
->arch
.local_int
, &irq
, irq_type
);
2553 if (copy_to_user(&buf
[n
], &irq
, sizeof(irq
)))
2558 if (test_bit(IRQ_PEND_EXT_EMERGENCY
, &pending_irqs
)) {
2559 for_each_set_bit(cpuaddr
, sigp_emerg_pending
, KVM_MAX_VCPUS
) {
2560 memset(&irq
, 0, sizeof(irq
));
2561 if (n
+ sizeof(irq
) > len
)
2563 irq
.type
= KVM_S390_INT_EMERGENCY
;
2564 irq
.u
.emerg
.code
= cpuaddr
;
2565 if (copy_to_user(&buf
[n
], &irq
, sizeof(irq
)))
2571 if (sca_ext_call_pending(vcpu
, &scn
)) {
2572 if (n
+ sizeof(irq
) > len
)
2574 memset(&irq
, 0, sizeof(irq
));
2575 irq
.type
= KVM_S390_INT_EXTERNAL_CALL
;
2576 irq
.u
.extcall
.code
= scn
;
2577 if (copy_to_user(&buf
[n
], &irq
, sizeof(irq
)))