2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License, version 2, as
4 * published by the Free Software Foundation.
6 * This program is distributed in the hope that it will be useful,
7 * but WITHOUT ANY WARRANTY; without even the implied warranty of
8 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
9 * GNU General Public License for more details.
11 * You should have received a copy of the GNU General Public License
12 * along with this program; if not, write to the Free Software
13 * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
15 * Copyright IBM Corp. 2007
16 * Copyright 2010-2011 Freescale Semiconductor, Inc.
18 * Authors: Hollis Blanchard <hollisb@us.ibm.com>
19 * Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
20 * Scott Wood <scottwood@freescale.com>
21 * Varun Sethi <varun.sethi@freescale.com>
24 #include <linux/errno.h>
25 #include <linux/err.h>
26 #include <linux/kvm_host.h>
27 #include <linux/gfp.h>
28 #include <linux/module.h>
29 #include <linux/vmalloc.h>
32 #include <asm/cputable.h>
33 #include <asm/uaccess.h>
34 #include <asm/kvm_ppc.h>
35 #include <asm/cacheflush.h>
36 #include <asm/dbell.h>
37 #include <asm/hw_irq.h>
44 #define CREATE_TRACE_POINTS
45 #include "trace_booke.h"
47 unsigned long kvmppc_booke_handlers
;
49 #define VM_STAT(x) offsetof(struct kvm, stat.x), KVM_STAT_VM
50 #define VCPU_STAT(x) offsetof(struct kvm_vcpu, stat.x), KVM_STAT_VCPU
52 struct kvm_stats_debugfs_item debugfs_entries
[] = {
53 { "mmio", VCPU_STAT(mmio_exits
) },
54 { "sig", VCPU_STAT(signal_exits
) },
55 { "itlb_r", VCPU_STAT(itlb_real_miss_exits
) },
56 { "itlb_v", VCPU_STAT(itlb_virt_miss_exits
) },
57 { "dtlb_r", VCPU_STAT(dtlb_real_miss_exits
) },
58 { "dtlb_v", VCPU_STAT(dtlb_virt_miss_exits
) },
59 { "sysc", VCPU_STAT(syscall_exits
) },
60 { "isi", VCPU_STAT(isi_exits
) },
61 { "dsi", VCPU_STAT(dsi_exits
) },
62 { "inst_emu", VCPU_STAT(emulated_inst_exits
) },
63 { "dec", VCPU_STAT(dec_exits
) },
64 { "ext_intr", VCPU_STAT(ext_intr_exits
) },
65 { "halt_successful_poll", VCPU_STAT(halt_successful_poll
) },
66 { "halt_attempted_poll", VCPU_STAT(halt_attempted_poll
) },
67 { "halt_poll_invalid", VCPU_STAT(halt_poll_invalid
) },
68 { "halt_wakeup", VCPU_STAT(halt_wakeup
) },
69 { "doorbell", VCPU_STAT(dbell_exits
) },
70 { "guest doorbell", VCPU_STAT(gdbell_exits
) },
71 { "remote_tlb_flush", VM_STAT(remote_tlb_flush
) },
75 /* TODO: use vcpu_printf() */
76 void kvmppc_dump_vcpu(struct kvm_vcpu
*vcpu
)
80 printk("pc: %08lx msr: %08llx\n", vcpu
->arch
.pc
, vcpu
->arch
.shared
->msr
);
81 printk("lr: %08lx ctr: %08lx\n", vcpu
->arch
.lr
, vcpu
->arch
.ctr
);
82 printk("srr0: %08llx srr1: %08llx\n", vcpu
->arch
.shared
->srr0
,
83 vcpu
->arch
.shared
->srr1
);
85 printk("exceptions: %08lx\n", vcpu
->arch
.pending_exceptions
);
87 for (i
= 0; i
< 32; i
+= 4) {
88 printk("gpr%02d: %08lx %08lx %08lx %08lx\n", i
,
89 kvmppc_get_gpr(vcpu
, i
),
90 kvmppc_get_gpr(vcpu
, i
+1),
91 kvmppc_get_gpr(vcpu
, i
+2),
92 kvmppc_get_gpr(vcpu
, i
+3));
97 void kvmppc_vcpu_disable_spe(struct kvm_vcpu
*vcpu
)
101 kvmppc_save_guest_spe(vcpu
);
102 disable_kernel_spe();
103 vcpu
->arch
.shadow_msr
&= ~MSR_SPE
;
107 static void kvmppc_vcpu_enable_spe(struct kvm_vcpu
*vcpu
)
111 kvmppc_load_guest_spe(vcpu
);
112 disable_kernel_spe();
113 vcpu
->arch
.shadow_msr
|= MSR_SPE
;
117 static void kvmppc_vcpu_sync_spe(struct kvm_vcpu
*vcpu
)
119 if (vcpu
->arch
.shared
->msr
& MSR_SPE
) {
120 if (!(vcpu
->arch
.shadow_msr
& MSR_SPE
))
121 kvmppc_vcpu_enable_spe(vcpu
);
122 } else if (vcpu
->arch
.shadow_msr
& MSR_SPE
) {
123 kvmppc_vcpu_disable_spe(vcpu
);
127 static void kvmppc_vcpu_sync_spe(struct kvm_vcpu
*vcpu
)
133 * Load up guest vcpu FP state if it's needed.
134 * It also set the MSR_FP in thread so that host know
135 * we're holding FPU, and then host can help to save
136 * guest vcpu FP state if other threads require to use FPU.
137 * This simulates an FP unavailable fault.
139 * It requires to be called with preemption disabled.
141 static inline void kvmppc_load_guest_fp(struct kvm_vcpu
*vcpu
)
143 #ifdef CONFIG_PPC_FPU
144 if (!(current
->thread
.regs
->msr
& MSR_FP
)) {
146 load_fp_state(&vcpu
->arch
.fp
);
148 current
->thread
.fp_save_area
= &vcpu
->arch
.fp
;
149 current
->thread
.regs
->msr
|= MSR_FP
;
155 * Save guest vcpu FP state into thread.
156 * It requires to be called with preemption disabled.
158 static inline void kvmppc_save_guest_fp(struct kvm_vcpu
*vcpu
)
160 #ifdef CONFIG_PPC_FPU
161 if (current
->thread
.regs
->msr
& MSR_FP
)
163 current
->thread
.fp_save_area
= NULL
;
167 static void kvmppc_vcpu_sync_fpu(struct kvm_vcpu
*vcpu
)
169 #if defined(CONFIG_PPC_FPU) && !defined(CONFIG_KVM_BOOKE_HV)
170 /* We always treat the FP bit as enabled from the host
171 perspective, so only need to adjust the shadow MSR */
172 vcpu
->arch
.shadow_msr
&= ~MSR_FP
;
173 vcpu
->arch
.shadow_msr
|= vcpu
->arch
.shared
->msr
& MSR_FP
;
178 * Simulate AltiVec unavailable fault to load guest state
179 * from thread to AltiVec unit.
180 * It requires to be called with preemption disabled.
182 static inline void kvmppc_load_guest_altivec(struct kvm_vcpu
*vcpu
)
184 #ifdef CONFIG_ALTIVEC
185 if (cpu_has_feature(CPU_FTR_ALTIVEC
)) {
186 if (!(current
->thread
.regs
->msr
& MSR_VEC
)) {
187 enable_kernel_altivec();
188 load_vr_state(&vcpu
->arch
.vr
);
189 disable_kernel_altivec();
190 current
->thread
.vr_save_area
= &vcpu
->arch
.vr
;
191 current
->thread
.regs
->msr
|= MSR_VEC
;
198 * Save guest vcpu AltiVec state into thread.
199 * It requires to be called with preemption disabled.
201 static inline void kvmppc_save_guest_altivec(struct kvm_vcpu
*vcpu
)
203 #ifdef CONFIG_ALTIVEC
204 if (cpu_has_feature(CPU_FTR_ALTIVEC
)) {
205 if (current
->thread
.regs
->msr
& MSR_VEC
)
206 giveup_altivec(current
);
207 current
->thread
.vr_save_area
= NULL
;
212 static void kvmppc_vcpu_sync_debug(struct kvm_vcpu
*vcpu
)
214 /* Synchronize guest's desire to get debug interrupts into shadow MSR */
215 #ifndef CONFIG_KVM_BOOKE_HV
216 vcpu
->arch
.shadow_msr
&= ~MSR_DE
;
217 vcpu
->arch
.shadow_msr
|= vcpu
->arch
.shared
->msr
& MSR_DE
;
220 /* Force enable debug interrupts when user space wants to debug */
221 if (vcpu
->guest_debug
) {
222 #ifdef CONFIG_KVM_BOOKE_HV
224 * Since there is no shadow MSR, sync MSR_DE into the guest
227 vcpu
->arch
.shared
->msr
|= MSR_DE
;
229 vcpu
->arch
.shadow_msr
|= MSR_DE
;
230 vcpu
->arch
.shared
->msr
&= ~MSR_DE
;
236 * Helper function for "full" MSR writes. No need to call this if only
237 * EE/CE/ME/DE/RI are changing.
239 void kvmppc_set_msr(struct kvm_vcpu
*vcpu
, u32 new_msr
)
241 u32 old_msr
= vcpu
->arch
.shared
->msr
;
243 #ifdef CONFIG_KVM_BOOKE_HV
247 vcpu
->arch
.shared
->msr
= new_msr
;
249 kvmppc_mmu_msr_notify(vcpu
, old_msr
);
250 kvmppc_vcpu_sync_spe(vcpu
);
251 kvmppc_vcpu_sync_fpu(vcpu
);
252 kvmppc_vcpu_sync_debug(vcpu
);
255 static void kvmppc_booke_queue_irqprio(struct kvm_vcpu
*vcpu
,
256 unsigned int priority
)
258 trace_kvm_booke_queue_irqprio(vcpu
, priority
);
259 set_bit(priority
, &vcpu
->arch
.pending_exceptions
);
262 void kvmppc_core_queue_dtlb_miss(struct kvm_vcpu
*vcpu
,
263 ulong dear_flags
, ulong esr_flags
)
265 vcpu
->arch
.queued_dear
= dear_flags
;
266 vcpu
->arch
.queued_esr
= esr_flags
;
267 kvmppc_booke_queue_irqprio(vcpu
, BOOKE_IRQPRIO_DTLB_MISS
);
270 void kvmppc_core_queue_data_storage(struct kvm_vcpu
*vcpu
,
271 ulong dear_flags
, ulong esr_flags
)
273 vcpu
->arch
.queued_dear
= dear_flags
;
274 vcpu
->arch
.queued_esr
= esr_flags
;
275 kvmppc_booke_queue_irqprio(vcpu
, BOOKE_IRQPRIO_DATA_STORAGE
);
278 void kvmppc_core_queue_itlb_miss(struct kvm_vcpu
*vcpu
)
280 kvmppc_booke_queue_irqprio(vcpu
, BOOKE_IRQPRIO_ITLB_MISS
);
283 void kvmppc_core_queue_inst_storage(struct kvm_vcpu
*vcpu
, ulong esr_flags
)
285 vcpu
->arch
.queued_esr
= esr_flags
;
286 kvmppc_booke_queue_irqprio(vcpu
, BOOKE_IRQPRIO_INST_STORAGE
);
289 static void kvmppc_core_queue_alignment(struct kvm_vcpu
*vcpu
, ulong dear_flags
,
292 vcpu
->arch
.queued_dear
= dear_flags
;
293 vcpu
->arch
.queued_esr
= esr_flags
;
294 kvmppc_booke_queue_irqprio(vcpu
, BOOKE_IRQPRIO_ALIGNMENT
);
297 void kvmppc_core_queue_program(struct kvm_vcpu
*vcpu
, ulong esr_flags
)
299 vcpu
->arch
.queued_esr
= esr_flags
;
300 kvmppc_booke_queue_irqprio(vcpu
, BOOKE_IRQPRIO_PROGRAM
);
303 void kvmppc_core_queue_dec(struct kvm_vcpu
*vcpu
)
305 kvmppc_booke_queue_irqprio(vcpu
, BOOKE_IRQPRIO_DECREMENTER
);
308 int kvmppc_core_pending_dec(struct kvm_vcpu
*vcpu
)
310 return test_bit(BOOKE_IRQPRIO_DECREMENTER
, &vcpu
->arch
.pending_exceptions
);
313 void kvmppc_core_dequeue_dec(struct kvm_vcpu
*vcpu
)
315 clear_bit(BOOKE_IRQPRIO_DECREMENTER
, &vcpu
->arch
.pending_exceptions
);
318 void kvmppc_core_queue_external(struct kvm_vcpu
*vcpu
,
319 struct kvm_interrupt
*irq
)
321 unsigned int prio
= BOOKE_IRQPRIO_EXTERNAL
;
323 if (irq
->irq
== KVM_INTERRUPT_SET_LEVEL
)
324 prio
= BOOKE_IRQPRIO_EXTERNAL_LEVEL
;
326 kvmppc_booke_queue_irqprio(vcpu
, prio
);
329 void kvmppc_core_dequeue_external(struct kvm_vcpu
*vcpu
)
331 clear_bit(BOOKE_IRQPRIO_EXTERNAL
, &vcpu
->arch
.pending_exceptions
);
332 clear_bit(BOOKE_IRQPRIO_EXTERNAL_LEVEL
, &vcpu
->arch
.pending_exceptions
);
335 static void kvmppc_core_queue_watchdog(struct kvm_vcpu
*vcpu
)
337 kvmppc_booke_queue_irqprio(vcpu
, BOOKE_IRQPRIO_WATCHDOG
);
340 static void kvmppc_core_dequeue_watchdog(struct kvm_vcpu
*vcpu
)
342 clear_bit(BOOKE_IRQPRIO_WATCHDOG
, &vcpu
->arch
.pending_exceptions
);
345 void kvmppc_core_queue_debug(struct kvm_vcpu
*vcpu
)
347 kvmppc_booke_queue_irqprio(vcpu
, BOOKE_IRQPRIO_DEBUG
);
350 void kvmppc_core_dequeue_debug(struct kvm_vcpu
*vcpu
)
352 clear_bit(BOOKE_IRQPRIO_DEBUG
, &vcpu
->arch
.pending_exceptions
);
355 static void set_guest_srr(struct kvm_vcpu
*vcpu
, unsigned long srr0
, u32 srr1
)
357 kvmppc_set_srr0(vcpu
, srr0
);
358 kvmppc_set_srr1(vcpu
, srr1
);
361 static void set_guest_csrr(struct kvm_vcpu
*vcpu
, unsigned long srr0
, u32 srr1
)
363 vcpu
->arch
.csrr0
= srr0
;
364 vcpu
->arch
.csrr1
= srr1
;
367 static void set_guest_dsrr(struct kvm_vcpu
*vcpu
, unsigned long srr0
, u32 srr1
)
369 if (cpu_has_feature(CPU_FTR_DEBUG_LVL_EXC
)) {
370 vcpu
->arch
.dsrr0
= srr0
;
371 vcpu
->arch
.dsrr1
= srr1
;
373 set_guest_csrr(vcpu
, srr0
, srr1
);
377 static void set_guest_mcsrr(struct kvm_vcpu
*vcpu
, unsigned long srr0
, u32 srr1
)
379 vcpu
->arch
.mcsrr0
= srr0
;
380 vcpu
->arch
.mcsrr1
= srr1
;
383 /* Deliver the interrupt of the corresponding priority, if possible. */
384 static int kvmppc_booke_irqprio_deliver(struct kvm_vcpu
*vcpu
,
385 unsigned int priority
)
389 bool update_esr
= false, update_dear
= false, update_epr
= false;
390 ulong crit_raw
= vcpu
->arch
.shared
->critical
;
391 ulong crit_r1
= kvmppc_get_gpr(vcpu
, 1);
393 bool keep_irq
= false;
394 enum int_class int_class
;
395 ulong new_msr
= vcpu
->arch
.shared
->msr
;
397 /* Truncate crit indicators in 32 bit mode */
398 if (!(vcpu
->arch
.shared
->msr
& MSR_SF
)) {
399 crit_raw
&= 0xffffffff;
400 crit_r1
&= 0xffffffff;
403 /* Critical section when crit == r1 */
404 crit
= (crit_raw
== crit_r1
);
405 /* ... and we're in supervisor mode */
406 crit
= crit
&& !(vcpu
->arch
.shared
->msr
& MSR_PR
);
408 if (priority
== BOOKE_IRQPRIO_EXTERNAL_LEVEL
) {
409 priority
= BOOKE_IRQPRIO_EXTERNAL
;
413 if ((priority
== BOOKE_IRQPRIO_EXTERNAL
) && vcpu
->arch
.epr_flags
)
417 case BOOKE_IRQPRIO_DTLB_MISS
:
418 case BOOKE_IRQPRIO_DATA_STORAGE
:
419 case BOOKE_IRQPRIO_ALIGNMENT
:
422 case BOOKE_IRQPRIO_INST_STORAGE
:
423 case BOOKE_IRQPRIO_PROGRAM
:
426 case BOOKE_IRQPRIO_ITLB_MISS
:
427 case BOOKE_IRQPRIO_SYSCALL
:
428 case BOOKE_IRQPRIO_FP_UNAVAIL
:
429 #ifdef CONFIG_SPE_POSSIBLE
430 case BOOKE_IRQPRIO_SPE_UNAVAIL
:
431 case BOOKE_IRQPRIO_SPE_FP_DATA
:
432 case BOOKE_IRQPRIO_SPE_FP_ROUND
:
434 #ifdef CONFIG_ALTIVEC
435 case BOOKE_IRQPRIO_ALTIVEC_UNAVAIL
:
436 case BOOKE_IRQPRIO_ALTIVEC_ASSIST
:
438 case BOOKE_IRQPRIO_AP_UNAVAIL
:
440 msr_mask
= MSR_CE
| MSR_ME
| MSR_DE
;
441 int_class
= INT_CLASS_NONCRIT
;
443 case BOOKE_IRQPRIO_WATCHDOG
:
444 case BOOKE_IRQPRIO_CRITICAL
:
445 case BOOKE_IRQPRIO_DBELL_CRIT
:
446 allowed
= vcpu
->arch
.shared
->msr
& MSR_CE
;
447 allowed
= allowed
&& !crit
;
449 int_class
= INT_CLASS_CRIT
;
451 case BOOKE_IRQPRIO_MACHINE_CHECK
:
452 allowed
= vcpu
->arch
.shared
->msr
& MSR_ME
;
453 allowed
= allowed
&& !crit
;
454 int_class
= INT_CLASS_MC
;
456 case BOOKE_IRQPRIO_DECREMENTER
:
457 case BOOKE_IRQPRIO_FIT
:
460 case BOOKE_IRQPRIO_EXTERNAL
:
461 case BOOKE_IRQPRIO_DBELL
:
462 allowed
= vcpu
->arch
.shared
->msr
& MSR_EE
;
463 allowed
= allowed
&& !crit
;
464 msr_mask
= MSR_CE
| MSR_ME
| MSR_DE
;
465 int_class
= INT_CLASS_NONCRIT
;
467 case BOOKE_IRQPRIO_DEBUG
:
468 allowed
= vcpu
->arch
.shared
->msr
& MSR_DE
;
469 allowed
= allowed
&& !crit
;
471 if (cpu_has_feature(CPU_FTR_DEBUG_LVL_EXC
))
472 int_class
= INT_CLASS_DBG
;
474 int_class
= INT_CLASS_CRIT
;
481 case INT_CLASS_NONCRIT
:
482 set_guest_srr(vcpu
, vcpu
->arch
.pc
,
483 vcpu
->arch
.shared
->msr
);
486 set_guest_csrr(vcpu
, vcpu
->arch
.pc
,
487 vcpu
->arch
.shared
->msr
);
490 set_guest_dsrr(vcpu
, vcpu
->arch
.pc
,
491 vcpu
->arch
.shared
->msr
);
494 set_guest_mcsrr(vcpu
, vcpu
->arch
.pc
,
495 vcpu
->arch
.shared
->msr
);
499 vcpu
->arch
.pc
= vcpu
->arch
.ivpr
| vcpu
->arch
.ivor
[priority
];
500 if (update_esr
== true)
501 kvmppc_set_esr(vcpu
, vcpu
->arch
.queued_esr
);
502 if (update_dear
== true)
503 kvmppc_set_dar(vcpu
, vcpu
->arch
.queued_dear
);
504 if (update_epr
== true) {
505 if (vcpu
->arch
.epr_flags
& KVMPPC_EPR_USER
)
506 kvm_make_request(KVM_REQ_EPR_EXIT
, vcpu
);
507 else if (vcpu
->arch
.epr_flags
& KVMPPC_EPR_KERNEL
) {
508 BUG_ON(vcpu
->arch
.irq_type
!= KVMPPC_IRQ_MPIC
);
509 kvmppc_mpic_set_epr(vcpu
);
514 #if defined(CONFIG_64BIT)
515 if (vcpu
->arch
.epcr
& SPRN_EPCR_ICM
)
518 kvmppc_set_msr(vcpu
, new_msr
);
521 clear_bit(priority
, &vcpu
->arch
.pending_exceptions
);
524 #ifdef CONFIG_KVM_BOOKE_HV
526 * If an interrupt is pending but masked, raise a guest doorbell
527 * so that we are notified when the guest enables the relevant
530 if (vcpu
->arch
.pending_exceptions
& BOOKE_IRQMASK_EE
)
531 kvmppc_set_pending_interrupt(vcpu
, INT_CLASS_NONCRIT
);
532 if (vcpu
->arch
.pending_exceptions
& BOOKE_IRQMASK_CE
)
533 kvmppc_set_pending_interrupt(vcpu
, INT_CLASS_CRIT
);
534 if (vcpu
->arch
.pending_exceptions
& BOOKE_IRQPRIO_MACHINE_CHECK
)
535 kvmppc_set_pending_interrupt(vcpu
, INT_CLASS_MC
);
542 * Return the number of jiffies until the next timeout. If the timeout is
543 * longer than the NEXT_TIMER_MAX_DELTA, then return NEXT_TIMER_MAX_DELTA
544 * because the larger value can break the timer APIs.
546 static unsigned long watchdog_next_timeout(struct kvm_vcpu
*vcpu
)
548 u64 tb
, wdt_tb
, wdt_ticks
= 0;
550 u32 period
= TCR_GET_WP(vcpu
->arch
.tcr
);
552 wdt_tb
= 1ULL << (63 - period
);
555 * The watchdog timeout will hapeen when TB bit corresponding
556 * to watchdog will toggle from 0 to 1.
561 wdt_ticks
+= wdt_tb
- (tb
& (wdt_tb
- 1));
563 /* Convert timebase ticks to jiffies */
564 nr_jiffies
= wdt_ticks
;
566 if (do_div(nr_jiffies
, tb_ticks_per_jiffy
))
569 return min_t(unsigned long long, nr_jiffies
, NEXT_TIMER_MAX_DELTA
);
572 static void arm_next_watchdog(struct kvm_vcpu
*vcpu
)
574 unsigned long nr_jiffies
;
578 * If TSR_ENW and TSR_WIS are not set then no need to exit to
579 * userspace, so clear the KVM_REQ_WATCHDOG request.
581 if ((vcpu
->arch
.tsr
& (TSR_ENW
| TSR_WIS
)) != (TSR_ENW
| TSR_WIS
))
582 clear_bit(KVM_REQ_WATCHDOG
, &vcpu
->requests
);
584 spin_lock_irqsave(&vcpu
->arch
.wdt_lock
, flags
);
585 nr_jiffies
= watchdog_next_timeout(vcpu
);
587 * If the number of jiffies of watchdog timer >= NEXT_TIMER_MAX_DELTA
588 * then do not run the watchdog timer as this can break timer APIs.
590 if (nr_jiffies
< NEXT_TIMER_MAX_DELTA
)
591 mod_timer(&vcpu
->arch
.wdt_timer
, jiffies
+ nr_jiffies
);
593 del_timer(&vcpu
->arch
.wdt_timer
);
594 spin_unlock_irqrestore(&vcpu
->arch
.wdt_lock
, flags
);
597 void kvmppc_watchdog_func(unsigned long data
)
599 struct kvm_vcpu
*vcpu
= (struct kvm_vcpu
*)data
;
604 new_tsr
= tsr
= vcpu
->arch
.tsr
;
612 new_tsr
= tsr
| TSR_WIS
;
614 new_tsr
= tsr
| TSR_ENW
;
616 } while (cmpxchg(&vcpu
->arch
.tsr
, tsr
, new_tsr
) != tsr
);
618 if (new_tsr
& TSR_WIS
) {
620 kvm_make_request(KVM_REQ_PENDING_TIMER
, vcpu
);
625 * If this is final watchdog expiry and some action is required
626 * then exit to userspace.
628 if (final
&& (vcpu
->arch
.tcr
& TCR_WRC_MASK
) &&
629 vcpu
->arch
.watchdog_enabled
) {
631 kvm_make_request(KVM_REQ_WATCHDOG
, vcpu
);
636 * Stop running the watchdog timer after final expiration to
637 * prevent the host from being flooded with timers if the
638 * guest sets a short period.
639 * Timers will resume when TSR/TCR is updated next time.
642 arm_next_watchdog(vcpu
);
645 static void update_timer_ints(struct kvm_vcpu
*vcpu
)
647 if ((vcpu
->arch
.tcr
& TCR_DIE
) && (vcpu
->arch
.tsr
& TSR_DIS
))
648 kvmppc_core_queue_dec(vcpu
);
650 kvmppc_core_dequeue_dec(vcpu
);
652 if ((vcpu
->arch
.tcr
& TCR_WIE
) && (vcpu
->arch
.tsr
& TSR_WIS
))
653 kvmppc_core_queue_watchdog(vcpu
);
655 kvmppc_core_dequeue_watchdog(vcpu
);
658 static void kvmppc_core_check_exceptions(struct kvm_vcpu
*vcpu
)
660 unsigned long *pending
= &vcpu
->arch
.pending_exceptions
;
661 unsigned int priority
;
663 priority
= __ffs(*pending
);
664 while (priority
< BOOKE_IRQPRIO_MAX
) {
665 if (kvmppc_booke_irqprio_deliver(vcpu
, priority
))
668 priority
= find_next_bit(pending
,
669 BITS_PER_BYTE
* sizeof(*pending
),
673 /* Tell the guest about our interrupt status */
674 vcpu
->arch
.shared
->int_pending
= !!*pending
;
677 /* Check pending exceptions and deliver one, if possible. */
678 int kvmppc_core_prepare_to_enter(struct kvm_vcpu
*vcpu
)
681 WARN_ON_ONCE(!irqs_disabled());
683 kvmppc_core_check_exceptions(vcpu
);
685 if (vcpu
->requests
) {
686 /* Exception delivery raised request; start over */
690 if (vcpu
->arch
.shared
->msr
& MSR_WE
) {
692 kvm_vcpu_block(vcpu
);
693 clear_bit(KVM_REQ_UNHALT
, &vcpu
->requests
);
696 kvmppc_set_exit_type(vcpu
, EMULATED_MTMSRWE_EXITS
);
703 int kvmppc_core_check_requests(struct kvm_vcpu
*vcpu
)
705 int r
= 1; /* Indicate we want to get back into the guest */
707 if (kvm_check_request(KVM_REQ_PENDING_TIMER
, vcpu
))
708 update_timer_ints(vcpu
);
709 #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC)
710 if (kvm_check_request(KVM_REQ_TLB_FLUSH
, vcpu
))
711 kvmppc_core_flush_tlb(vcpu
);
714 if (kvm_check_request(KVM_REQ_WATCHDOG
, vcpu
)) {
715 vcpu
->run
->exit_reason
= KVM_EXIT_WATCHDOG
;
719 if (kvm_check_request(KVM_REQ_EPR_EXIT
, vcpu
)) {
720 vcpu
->run
->epr
.epr
= 0;
721 vcpu
->arch
.epr_needed
= true;
722 vcpu
->run
->exit_reason
= KVM_EXIT_EPR
;
729 int kvmppc_vcpu_run(struct kvm_run
*kvm_run
, struct kvm_vcpu
*vcpu
)
732 struct debug_reg debug
;
734 if (!vcpu
->arch
.sane
) {
735 kvm_run
->exit_reason
= KVM_EXIT_INTERNAL_ERROR
;
739 s
= kvmppc_prepare_to_enter(vcpu
);
744 /* interrupts now hard-disabled */
746 #ifdef CONFIG_PPC_FPU
747 /* Save userspace FPU state in stack */
751 * Since we can't trap on MSR_FP in GS-mode, we consider the guest
752 * as always using the FPU.
754 kvmppc_load_guest_fp(vcpu
);
757 #ifdef CONFIG_ALTIVEC
758 /* Save userspace AltiVec state in stack */
759 if (cpu_has_feature(CPU_FTR_ALTIVEC
))
760 enable_kernel_altivec();
762 * Since we can't trap on MSR_VEC in GS-mode, we consider the guest
763 * as always using the AltiVec.
765 kvmppc_load_guest_altivec(vcpu
);
768 /* Switch to guest debug context */
769 debug
= vcpu
->arch
.dbg_reg
;
770 switch_booke_debug_regs(&debug
);
771 debug
= current
->thread
.debug
;
772 current
->thread
.debug
= vcpu
->arch
.dbg_reg
;
774 vcpu
->arch
.pgdir
= current
->mm
->pgd
;
775 kvmppc_fix_ee_before_entry();
777 ret
= __kvmppc_vcpu_run(kvm_run
, vcpu
);
779 /* No need for kvm_guest_exit. It's done in handle_exit.
780 We also get here with interrupts enabled. */
782 /* Switch back to user space debug context */
783 switch_booke_debug_regs(&debug
);
784 current
->thread
.debug
= debug
;
786 #ifdef CONFIG_PPC_FPU
787 kvmppc_save_guest_fp(vcpu
);
790 #ifdef CONFIG_ALTIVEC
791 kvmppc_save_guest_altivec(vcpu
);
795 vcpu
->mode
= OUTSIDE_GUEST_MODE
;
799 static int emulation_exit(struct kvm_run
*run
, struct kvm_vcpu
*vcpu
)
801 enum emulation_result er
;
803 er
= kvmppc_emulate_instruction(run
, vcpu
);
806 /* don't overwrite subtypes, just account kvm_stats */
807 kvmppc_account_exit_stat(vcpu
, EMULATED_INST_EXITS
);
808 /* Future optimization: only reload non-volatiles if
809 * they were actually modified by emulation. */
810 return RESUME_GUEST_NV
;
816 printk(KERN_CRIT
"%s: emulation at %lx failed (%08x)\n",
817 __func__
, vcpu
->arch
.pc
, vcpu
->arch
.last_inst
);
818 /* For debugging, encode the failing instruction and
819 * report it to userspace. */
820 run
->hw
.hardware_exit_reason
= ~0ULL << 32;
821 run
->hw
.hardware_exit_reason
|= vcpu
->arch
.last_inst
;
822 kvmppc_core_queue_program(vcpu
, ESR_PIL
);
825 case EMULATE_EXIT_USER
:
833 static int kvmppc_handle_debug(struct kvm_run
*run
, struct kvm_vcpu
*vcpu
)
835 struct debug_reg
*dbg_reg
= &(vcpu
->arch
.dbg_reg
);
836 u32 dbsr
= vcpu
->arch
.dbsr
;
838 if (vcpu
->guest_debug
== 0) {
840 * Debug resources belong to Guest.
841 * Imprecise debug event is not injected
843 if (dbsr
& DBSR_IDE
) {
849 if (dbsr
&& (vcpu
->arch
.shared
->msr
& MSR_DE
) &&
850 (vcpu
->arch
.dbg_reg
.dbcr0
& DBCR0_IDM
))
851 kvmppc_core_queue_debug(vcpu
);
853 /* Inject a program interrupt if trap debug is not allowed */
854 if ((dbsr
& DBSR_TIE
) && !(vcpu
->arch
.shared
->msr
& MSR_DE
))
855 kvmppc_core_queue_program(vcpu
, ESR_PTR
);
861 * Debug resource owned by userspace.
862 * Clear guest dbsr (vcpu->arch.dbsr)
865 run
->debug
.arch
.status
= 0;
866 run
->debug
.arch
.address
= vcpu
->arch
.pc
;
868 if (dbsr
& (DBSR_IAC1
| DBSR_IAC2
| DBSR_IAC3
| DBSR_IAC4
)) {
869 run
->debug
.arch
.status
|= KVMPPC_DEBUG_BREAKPOINT
;
871 if (dbsr
& (DBSR_DAC1W
| DBSR_DAC2W
))
872 run
->debug
.arch
.status
|= KVMPPC_DEBUG_WATCH_WRITE
;
873 else if (dbsr
& (DBSR_DAC1R
| DBSR_DAC2R
))
874 run
->debug
.arch
.status
|= KVMPPC_DEBUG_WATCH_READ
;
875 if (dbsr
& (DBSR_DAC1R
| DBSR_DAC1W
))
876 run
->debug
.arch
.address
= dbg_reg
->dac1
;
877 else if (dbsr
& (DBSR_DAC2R
| DBSR_DAC2W
))
878 run
->debug
.arch
.address
= dbg_reg
->dac2
;
884 static void kvmppc_fill_pt_regs(struct pt_regs
*regs
)
886 ulong r1
, ip
, msr
, lr
;
888 asm("mr %0, 1" : "=r"(r1
));
889 asm("mflr %0" : "=r"(lr
));
890 asm("mfmsr %0" : "=r"(msr
));
891 asm("bl 1f; 1: mflr %0" : "=r"(ip
));
893 memset(regs
, 0, sizeof(*regs
));
901 * For interrupts needed to be handled by host interrupt handlers,
902 * corresponding host handler are called from here in similar way
903 * (but not exact) as they are called from low level handler
904 * (such as from arch/powerpc/kernel/head_fsl_booke.S).
906 static void kvmppc_restart_interrupt(struct kvm_vcpu
*vcpu
,
907 unsigned int exit_nr
)
912 case BOOKE_INTERRUPT_EXTERNAL
:
913 kvmppc_fill_pt_regs(®s
);
916 case BOOKE_INTERRUPT_DECREMENTER
:
917 kvmppc_fill_pt_regs(®s
);
918 timer_interrupt(®s
);
920 #if defined(CONFIG_PPC_DOORBELL)
921 case BOOKE_INTERRUPT_DOORBELL
:
922 kvmppc_fill_pt_regs(®s
);
923 doorbell_exception(®s
);
926 case BOOKE_INTERRUPT_MACHINE_CHECK
:
929 case BOOKE_INTERRUPT_PERFORMANCE_MONITOR
:
930 kvmppc_fill_pt_regs(®s
);
931 performance_monitor_exception(®s
);
933 case BOOKE_INTERRUPT_WATCHDOG
:
934 kvmppc_fill_pt_regs(®s
);
935 #ifdef CONFIG_BOOKE_WDT
936 WatchdogException(®s
);
938 unknown_exception(®s
);
941 case BOOKE_INTERRUPT_CRITICAL
:
942 kvmppc_fill_pt_regs(®s
);
943 unknown_exception(®s
);
945 case BOOKE_INTERRUPT_DEBUG
:
946 /* Save DBSR before preemption is enabled */
947 vcpu
->arch
.dbsr
= mfspr(SPRN_DBSR
);
953 static int kvmppc_resume_inst_load(struct kvm_run
*run
, struct kvm_vcpu
*vcpu
,
954 enum emulation_result emulated
, u32 last_inst
)
961 pr_debug("%s: load instruction from guest address %lx failed\n",
962 __func__
, vcpu
->arch
.pc
);
963 /* For debugging, encode the failing instruction and
964 * report it to userspace. */
965 run
->hw
.hardware_exit_reason
= ~0ULL << 32;
966 run
->hw
.hardware_exit_reason
|= last_inst
;
967 kvmppc_core_queue_program(vcpu
, ESR_PIL
);
978 * Return value is in the form (errcode<<2 | RESUME_FLAG_HOST | RESUME_FLAG_NV)
980 int kvmppc_handle_exit(struct kvm_run
*run
, struct kvm_vcpu
*vcpu
,
981 unsigned int exit_nr
)
986 u32 last_inst
= KVM_INST_FETCH_FAILED
;
987 enum emulation_result emulated
= EMULATE_DONE
;
989 /* update before a new last_exit_type is rewritten */
990 kvmppc_update_timing_stats(vcpu
);
992 /* restart interrupts if they were meant for the host */
993 kvmppc_restart_interrupt(vcpu
, exit_nr
);
996 * get last instruction before being preempted
997 * TODO: for e6500 check also BOOKE_INTERRUPT_LRAT_ERROR & ESR_DATA
1000 case BOOKE_INTERRUPT_DATA_STORAGE
:
1001 case BOOKE_INTERRUPT_DTLB_MISS
:
1002 case BOOKE_INTERRUPT_HV_PRIV
:
1003 emulated
= kvmppc_get_last_inst(vcpu
, INST_GENERIC
, &last_inst
);
1005 case BOOKE_INTERRUPT_PROGRAM
:
1006 /* SW breakpoints arrive as illegal instructions on HV */
1007 if (vcpu
->guest_debug
& KVM_GUESTDBG_USE_SW_BP
)
1008 emulated
= kvmppc_get_last_inst(vcpu
, INST_GENERIC
, &last_inst
);
1014 trace_kvm_exit(exit_nr
, vcpu
);
1019 run
->exit_reason
= KVM_EXIT_UNKNOWN
;
1020 run
->ready_for_interrupt_injection
= 1;
1022 if (emulated
!= EMULATE_DONE
) {
1023 r
= kvmppc_resume_inst_load(run
, vcpu
, emulated
, last_inst
);
1028 case BOOKE_INTERRUPT_MACHINE_CHECK
:
1029 printk("MACHINE CHECK: %lx\n", mfspr(SPRN_MCSR
));
1030 kvmppc_dump_vcpu(vcpu
);
1031 /* For debugging, send invalid exit reason to user space */
1032 run
->hw
.hardware_exit_reason
= ~1ULL << 32;
1033 run
->hw
.hardware_exit_reason
|= mfspr(SPRN_MCSR
);
1037 case BOOKE_INTERRUPT_EXTERNAL
:
1038 kvmppc_account_exit(vcpu
, EXT_INTR_EXITS
);
1042 case BOOKE_INTERRUPT_DECREMENTER
:
1043 kvmppc_account_exit(vcpu
, DEC_EXITS
);
1047 case BOOKE_INTERRUPT_WATCHDOG
:
1051 case BOOKE_INTERRUPT_DOORBELL
:
1052 kvmppc_account_exit(vcpu
, DBELL_EXITS
);
1056 case BOOKE_INTERRUPT_GUEST_DBELL_CRIT
:
1057 kvmppc_account_exit(vcpu
, GDBELL_EXITS
);
1060 * We are here because there is a pending guest interrupt
1061 * which could not be delivered as MSR_CE or MSR_ME was not
1062 * set. Once we break from here we will retry delivery.
1067 case BOOKE_INTERRUPT_GUEST_DBELL
:
1068 kvmppc_account_exit(vcpu
, GDBELL_EXITS
);
1071 * We are here because there is a pending guest interrupt
1072 * which could not be delivered as MSR_EE was not set. Once
1073 * we break from here we will retry delivery.
1078 case BOOKE_INTERRUPT_PERFORMANCE_MONITOR
:
1082 case BOOKE_INTERRUPT_HV_PRIV
:
1083 r
= emulation_exit(run
, vcpu
);
1086 case BOOKE_INTERRUPT_PROGRAM
:
1087 if ((vcpu
->guest_debug
& KVM_GUESTDBG_USE_SW_BP
) &&
1088 (last_inst
== KVMPPC_INST_SW_BREAKPOINT
)) {
1090 * We are here because of an SW breakpoint instr,
1091 * so lets return to host to handle.
1093 r
= kvmppc_handle_debug(run
, vcpu
);
1094 run
->exit_reason
= KVM_EXIT_DEBUG
;
1095 kvmppc_account_exit(vcpu
, DEBUG_EXITS
);
1099 if (vcpu
->arch
.shared
->msr
& (MSR_PR
| MSR_GS
)) {
1101 * Program traps generated by user-level software must
1102 * be handled by the guest kernel.
1104 * In GS mode, hypervisor privileged instructions trap
1105 * on BOOKE_INTERRUPT_HV_PRIV, not here, so these are
1106 * actual program interrupts, handled by the guest.
1108 kvmppc_core_queue_program(vcpu
, vcpu
->arch
.fault_esr
);
1110 kvmppc_account_exit(vcpu
, USR_PR_INST
);
1114 r
= emulation_exit(run
, vcpu
);
1117 case BOOKE_INTERRUPT_FP_UNAVAIL
:
1118 kvmppc_booke_queue_irqprio(vcpu
, BOOKE_IRQPRIO_FP_UNAVAIL
);
1119 kvmppc_account_exit(vcpu
, FP_UNAVAIL
);
1124 case BOOKE_INTERRUPT_SPE_UNAVAIL
: {
1125 if (vcpu
->arch
.shared
->msr
& MSR_SPE
)
1126 kvmppc_vcpu_enable_spe(vcpu
);
1128 kvmppc_booke_queue_irqprio(vcpu
,
1129 BOOKE_IRQPRIO_SPE_UNAVAIL
);
1134 case BOOKE_INTERRUPT_SPE_FP_DATA
:
1135 kvmppc_booke_queue_irqprio(vcpu
, BOOKE_IRQPRIO_SPE_FP_DATA
);
1139 case BOOKE_INTERRUPT_SPE_FP_ROUND
:
1140 kvmppc_booke_queue_irqprio(vcpu
, BOOKE_IRQPRIO_SPE_FP_ROUND
);
1143 #elif defined(CONFIG_SPE_POSSIBLE)
1144 case BOOKE_INTERRUPT_SPE_UNAVAIL
:
1146 * Guest wants SPE, but host kernel doesn't support it. Send
1147 * an "unimplemented operation" program check to the guest.
1149 kvmppc_core_queue_program(vcpu
, ESR_PUO
| ESR_SPV
);
1154 * These really should never happen without CONFIG_SPE,
1155 * as we should never enable the real MSR[SPE] in the guest.
1157 case BOOKE_INTERRUPT_SPE_FP_DATA
:
1158 case BOOKE_INTERRUPT_SPE_FP_ROUND
:
1159 printk(KERN_CRIT
"%s: unexpected SPE interrupt %u at %08lx\n",
1160 __func__
, exit_nr
, vcpu
->arch
.pc
);
1161 run
->hw
.hardware_exit_reason
= exit_nr
;
1164 #endif /* CONFIG_SPE_POSSIBLE */
1167 * On cores with Vector category, KVM is loaded only if CONFIG_ALTIVEC,
1168 * see kvmppc_core_check_processor_compat().
1170 #ifdef CONFIG_ALTIVEC
1171 case BOOKE_INTERRUPT_ALTIVEC_UNAVAIL
:
1172 kvmppc_booke_queue_irqprio(vcpu
, BOOKE_IRQPRIO_ALTIVEC_UNAVAIL
);
1176 case BOOKE_INTERRUPT_ALTIVEC_ASSIST
:
1177 kvmppc_booke_queue_irqprio(vcpu
, BOOKE_IRQPRIO_ALTIVEC_ASSIST
);
1182 case BOOKE_INTERRUPT_DATA_STORAGE
:
1183 kvmppc_core_queue_data_storage(vcpu
, vcpu
->arch
.fault_dear
,
1184 vcpu
->arch
.fault_esr
);
1185 kvmppc_account_exit(vcpu
, DSI_EXITS
);
1189 case BOOKE_INTERRUPT_INST_STORAGE
:
1190 kvmppc_core_queue_inst_storage(vcpu
, vcpu
->arch
.fault_esr
);
1191 kvmppc_account_exit(vcpu
, ISI_EXITS
);
1195 case BOOKE_INTERRUPT_ALIGNMENT
:
1196 kvmppc_core_queue_alignment(vcpu
, vcpu
->arch
.fault_dear
,
1197 vcpu
->arch
.fault_esr
);
1201 #ifdef CONFIG_KVM_BOOKE_HV
1202 case BOOKE_INTERRUPT_HV_SYSCALL
:
1203 if (!(vcpu
->arch
.shared
->msr
& MSR_PR
)) {
1204 kvmppc_set_gpr(vcpu
, 3, kvmppc_kvm_pv(vcpu
));
1207 * hcall from guest userspace -- send privileged
1208 * instruction program check.
1210 kvmppc_core_queue_program(vcpu
, ESR_PPR
);
1216 case BOOKE_INTERRUPT_SYSCALL
:
1217 if (!(vcpu
->arch
.shared
->msr
& MSR_PR
) &&
1218 (((u32
)kvmppc_get_gpr(vcpu
, 0)) == KVM_SC_MAGIC_R0
)) {
1219 /* KVM PV hypercalls */
1220 kvmppc_set_gpr(vcpu
, 3, kvmppc_kvm_pv(vcpu
));
1223 /* Guest syscalls */
1224 kvmppc_booke_queue_irqprio(vcpu
, BOOKE_IRQPRIO_SYSCALL
);
1226 kvmppc_account_exit(vcpu
, SYSCALL_EXITS
);
1231 case BOOKE_INTERRUPT_DTLB_MISS
: {
1232 unsigned long eaddr
= vcpu
->arch
.fault_dear
;
1237 #ifdef CONFIG_KVM_E500V2
1238 if (!(vcpu
->arch
.shared
->msr
& MSR_PR
) &&
1239 (eaddr
& PAGE_MASK
) == vcpu
->arch
.magic_page_ea
) {
1240 kvmppc_map_magic(vcpu
);
1241 kvmppc_account_exit(vcpu
, DTLB_VIRT_MISS_EXITS
);
1248 /* Check the guest TLB. */
1249 gtlb_index
= kvmppc_mmu_dtlb_index(vcpu
, eaddr
);
1250 if (gtlb_index
< 0) {
1251 /* The guest didn't have a mapping for it. */
1252 kvmppc_core_queue_dtlb_miss(vcpu
,
1253 vcpu
->arch
.fault_dear
,
1254 vcpu
->arch
.fault_esr
);
1255 kvmppc_mmu_dtlb_miss(vcpu
);
1256 kvmppc_account_exit(vcpu
, DTLB_REAL_MISS_EXITS
);
1261 idx
= srcu_read_lock(&vcpu
->kvm
->srcu
);
1263 gpaddr
= kvmppc_mmu_xlate(vcpu
, gtlb_index
, eaddr
);
1264 gfn
= gpaddr
>> PAGE_SHIFT
;
1266 if (kvm_is_visible_gfn(vcpu
->kvm
, gfn
)) {
1267 /* The guest TLB had a mapping, but the shadow TLB
1268 * didn't, and it is RAM. This could be because:
1269 * a) the entry is mapping the host kernel, or
1270 * b) the guest used a large mapping which we're faking
1271 * Either way, we need to satisfy the fault without
1272 * invoking the guest. */
1273 kvmppc_mmu_map(vcpu
, eaddr
, gpaddr
, gtlb_index
);
1274 kvmppc_account_exit(vcpu
, DTLB_VIRT_MISS_EXITS
);
1277 /* Guest has mapped and accessed a page which is not
1279 vcpu
->arch
.paddr_accessed
= gpaddr
;
1280 vcpu
->arch
.vaddr_accessed
= eaddr
;
1281 r
= kvmppc_emulate_mmio(run
, vcpu
);
1282 kvmppc_account_exit(vcpu
, MMIO_EXITS
);
1285 srcu_read_unlock(&vcpu
->kvm
->srcu
, idx
);
1289 case BOOKE_INTERRUPT_ITLB_MISS
: {
1290 unsigned long eaddr
= vcpu
->arch
.pc
;
1297 /* Check the guest TLB. */
1298 gtlb_index
= kvmppc_mmu_itlb_index(vcpu
, eaddr
);
1299 if (gtlb_index
< 0) {
1300 /* The guest didn't have a mapping for it. */
1301 kvmppc_booke_queue_irqprio(vcpu
, BOOKE_IRQPRIO_ITLB_MISS
);
1302 kvmppc_mmu_itlb_miss(vcpu
);
1303 kvmppc_account_exit(vcpu
, ITLB_REAL_MISS_EXITS
);
1307 kvmppc_account_exit(vcpu
, ITLB_VIRT_MISS_EXITS
);
1309 idx
= srcu_read_lock(&vcpu
->kvm
->srcu
);
1311 gpaddr
= kvmppc_mmu_xlate(vcpu
, gtlb_index
, eaddr
);
1312 gfn
= gpaddr
>> PAGE_SHIFT
;
1314 if (kvm_is_visible_gfn(vcpu
->kvm
, gfn
)) {
1315 /* The guest TLB had a mapping, but the shadow TLB
1316 * didn't. This could be because:
1317 * a) the entry is mapping the host kernel, or
1318 * b) the guest used a large mapping which we're faking
1319 * Either way, we need to satisfy the fault without
1320 * invoking the guest. */
1321 kvmppc_mmu_map(vcpu
, eaddr
, gpaddr
, gtlb_index
);
1323 /* Guest mapped and leaped at non-RAM! */
1324 kvmppc_booke_queue_irqprio(vcpu
, BOOKE_IRQPRIO_MACHINE_CHECK
);
1327 srcu_read_unlock(&vcpu
->kvm
->srcu
, idx
);
1331 case BOOKE_INTERRUPT_DEBUG
: {
1332 r
= kvmppc_handle_debug(run
, vcpu
);
1333 if (r
== RESUME_HOST
)
1334 run
->exit_reason
= KVM_EXIT_DEBUG
;
1335 kvmppc_account_exit(vcpu
, DEBUG_EXITS
);
1340 printk(KERN_EMERG
"exit_nr %d\n", exit_nr
);
1346 * To avoid clobbering exit_reason, only check for signals if we
1347 * aren't already exiting to userspace for some other reason.
1349 if (!(r
& RESUME_HOST
)) {
1350 s
= kvmppc_prepare_to_enter(vcpu
);
1352 r
= (s
<< 2) | RESUME_HOST
| (r
& RESUME_FLAG_NV
);
1354 /* interrupts now hard-disabled */
1355 kvmppc_fix_ee_before_entry();
1356 kvmppc_load_guest_fp(vcpu
);
1357 kvmppc_load_guest_altivec(vcpu
);
1364 static void kvmppc_set_tsr(struct kvm_vcpu
*vcpu
, u32 new_tsr
)
1366 u32 old_tsr
= vcpu
->arch
.tsr
;
1368 vcpu
->arch
.tsr
= new_tsr
;
1370 if ((old_tsr
^ vcpu
->arch
.tsr
) & (TSR_ENW
| TSR_WIS
))
1371 arm_next_watchdog(vcpu
);
1373 update_timer_ints(vcpu
);
1376 /* Initial guest state: 16MB mapping 0 -> 0, PC = 0, MSR = 0, R1 = 16MB */
1377 int kvm_arch_vcpu_setup(struct kvm_vcpu
*vcpu
)
1383 vcpu
->arch
.shared
->pir
= vcpu
->vcpu_id
;
1384 kvmppc_set_gpr(vcpu
, 1, (16<<20) - 8); /* -8 for the callee-save LR slot */
1385 kvmppc_set_msr(vcpu
, 0);
1387 #ifndef CONFIG_KVM_BOOKE_HV
1388 vcpu
->arch
.shadow_msr
= MSR_USER
| MSR_IS
| MSR_DS
;
1389 vcpu
->arch
.shadow_pid
= 1;
1390 vcpu
->arch
.shared
->msr
= 0;
1393 /* Eye-catching numbers so we know if the guest takes an interrupt
1394 * before it's programmed its own IVPR/IVORs. */
1395 vcpu
->arch
.ivpr
= 0x55550000;
1396 for (i
= 0; i
< BOOKE_IRQPRIO_MAX
; i
++)
1397 vcpu
->arch
.ivor
[i
] = 0x7700 | i
* 4;
1399 kvmppc_init_timing_stats(vcpu
);
1401 r
= kvmppc_core_vcpu_setup(vcpu
);
1402 kvmppc_sanity_check(vcpu
);
1406 int kvmppc_subarch_vcpu_init(struct kvm_vcpu
*vcpu
)
1408 /* setup watchdog timer once */
1409 spin_lock_init(&vcpu
->arch
.wdt_lock
);
1410 setup_timer(&vcpu
->arch
.wdt_timer
, kvmppc_watchdog_func
,
1411 (unsigned long)vcpu
);
1414 * Clear DBSR.MRR to avoid guest debug interrupt as
1415 * this is of host interest
1417 mtspr(SPRN_DBSR
, DBSR_MRR
);
1421 void kvmppc_subarch_vcpu_uninit(struct kvm_vcpu
*vcpu
)
1423 del_timer_sync(&vcpu
->arch
.wdt_timer
);
1426 int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu
*vcpu
, struct kvm_regs
*regs
)
1430 regs
->pc
= vcpu
->arch
.pc
;
1431 regs
->cr
= kvmppc_get_cr(vcpu
);
1432 regs
->ctr
= vcpu
->arch
.ctr
;
1433 regs
->lr
= vcpu
->arch
.lr
;
1434 regs
->xer
= kvmppc_get_xer(vcpu
);
1435 regs
->msr
= vcpu
->arch
.shared
->msr
;
1436 regs
->srr0
= kvmppc_get_srr0(vcpu
);
1437 regs
->srr1
= kvmppc_get_srr1(vcpu
);
1438 regs
->pid
= vcpu
->arch
.pid
;
1439 regs
->sprg0
= kvmppc_get_sprg0(vcpu
);
1440 regs
->sprg1
= kvmppc_get_sprg1(vcpu
);
1441 regs
->sprg2
= kvmppc_get_sprg2(vcpu
);
1442 regs
->sprg3
= kvmppc_get_sprg3(vcpu
);
1443 regs
->sprg4
= kvmppc_get_sprg4(vcpu
);
1444 regs
->sprg5
= kvmppc_get_sprg5(vcpu
);
1445 regs
->sprg6
= kvmppc_get_sprg6(vcpu
);
1446 regs
->sprg7
= kvmppc_get_sprg7(vcpu
);
1448 for (i
= 0; i
< ARRAY_SIZE(regs
->gpr
); i
++)
1449 regs
->gpr
[i
] = kvmppc_get_gpr(vcpu
, i
);
1454 int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu
*vcpu
, struct kvm_regs
*regs
)
1458 vcpu
->arch
.pc
= regs
->pc
;
1459 kvmppc_set_cr(vcpu
, regs
->cr
);
1460 vcpu
->arch
.ctr
= regs
->ctr
;
1461 vcpu
->arch
.lr
= regs
->lr
;
1462 kvmppc_set_xer(vcpu
, regs
->xer
);
1463 kvmppc_set_msr(vcpu
, regs
->msr
);
1464 kvmppc_set_srr0(vcpu
, regs
->srr0
);
1465 kvmppc_set_srr1(vcpu
, regs
->srr1
);
1466 kvmppc_set_pid(vcpu
, regs
->pid
);
1467 kvmppc_set_sprg0(vcpu
, regs
->sprg0
);
1468 kvmppc_set_sprg1(vcpu
, regs
->sprg1
);
1469 kvmppc_set_sprg2(vcpu
, regs
->sprg2
);
1470 kvmppc_set_sprg3(vcpu
, regs
->sprg3
);
1471 kvmppc_set_sprg4(vcpu
, regs
->sprg4
);
1472 kvmppc_set_sprg5(vcpu
, regs
->sprg5
);
1473 kvmppc_set_sprg6(vcpu
, regs
->sprg6
);
1474 kvmppc_set_sprg7(vcpu
, regs
->sprg7
);
1476 for (i
= 0; i
< ARRAY_SIZE(regs
->gpr
); i
++)
1477 kvmppc_set_gpr(vcpu
, i
, regs
->gpr
[i
]);
1482 static void get_sregs_base(struct kvm_vcpu
*vcpu
,
1483 struct kvm_sregs
*sregs
)
1487 sregs
->u
.e
.features
|= KVM_SREGS_E_BASE
;
1489 sregs
->u
.e
.csrr0
= vcpu
->arch
.csrr0
;
1490 sregs
->u
.e
.csrr1
= vcpu
->arch
.csrr1
;
1491 sregs
->u
.e
.mcsr
= vcpu
->arch
.mcsr
;
1492 sregs
->u
.e
.esr
= kvmppc_get_esr(vcpu
);
1493 sregs
->u
.e
.dear
= kvmppc_get_dar(vcpu
);
1494 sregs
->u
.e
.tsr
= vcpu
->arch
.tsr
;
1495 sregs
->u
.e
.tcr
= vcpu
->arch
.tcr
;
1496 sregs
->u
.e
.dec
= kvmppc_get_dec(vcpu
, tb
);
1498 sregs
->u
.e
.vrsave
= vcpu
->arch
.vrsave
;
1501 static int set_sregs_base(struct kvm_vcpu
*vcpu
,
1502 struct kvm_sregs
*sregs
)
1504 if (!(sregs
->u
.e
.features
& KVM_SREGS_E_BASE
))
1507 vcpu
->arch
.csrr0
= sregs
->u
.e
.csrr0
;
1508 vcpu
->arch
.csrr1
= sregs
->u
.e
.csrr1
;
1509 vcpu
->arch
.mcsr
= sregs
->u
.e
.mcsr
;
1510 kvmppc_set_esr(vcpu
, sregs
->u
.e
.esr
);
1511 kvmppc_set_dar(vcpu
, sregs
->u
.e
.dear
);
1512 vcpu
->arch
.vrsave
= sregs
->u
.e
.vrsave
;
1513 kvmppc_set_tcr(vcpu
, sregs
->u
.e
.tcr
);
1515 if (sregs
->u
.e
.update_special
& KVM_SREGS_E_UPDATE_DEC
) {
1516 vcpu
->arch
.dec
= sregs
->u
.e
.dec
;
1517 kvmppc_emulate_dec(vcpu
);
1520 if (sregs
->u
.e
.update_special
& KVM_SREGS_E_UPDATE_TSR
)
1521 kvmppc_set_tsr(vcpu
, sregs
->u
.e
.tsr
);
1526 static void get_sregs_arch206(struct kvm_vcpu
*vcpu
,
1527 struct kvm_sregs
*sregs
)
1529 sregs
->u
.e
.features
|= KVM_SREGS_E_ARCH206
;
1531 sregs
->u
.e
.pir
= vcpu
->vcpu_id
;
1532 sregs
->u
.e
.mcsrr0
= vcpu
->arch
.mcsrr0
;
1533 sregs
->u
.e
.mcsrr1
= vcpu
->arch
.mcsrr1
;
1534 sregs
->u
.e
.decar
= vcpu
->arch
.decar
;
1535 sregs
->u
.e
.ivpr
= vcpu
->arch
.ivpr
;
1538 static int set_sregs_arch206(struct kvm_vcpu
*vcpu
,
1539 struct kvm_sregs
*sregs
)
1541 if (!(sregs
->u
.e
.features
& KVM_SREGS_E_ARCH206
))
1544 if (sregs
->u
.e
.pir
!= vcpu
->vcpu_id
)
1547 vcpu
->arch
.mcsrr0
= sregs
->u
.e
.mcsrr0
;
1548 vcpu
->arch
.mcsrr1
= sregs
->u
.e
.mcsrr1
;
1549 vcpu
->arch
.decar
= sregs
->u
.e
.decar
;
1550 vcpu
->arch
.ivpr
= sregs
->u
.e
.ivpr
;
1555 int kvmppc_get_sregs_ivor(struct kvm_vcpu
*vcpu
, struct kvm_sregs
*sregs
)
1557 sregs
->u
.e
.features
|= KVM_SREGS_E_IVOR
;
1559 sregs
->u
.e
.ivor_low
[0] = vcpu
->arch
.ivor
[BOOKE_IRQPRIO_CRITICAL
];
1560 sregs
->u
.e
.ivor_low
[1] = vcpu
->arch
.ivor
[BOOKE_IRQPRIO_MACHINE_CHECK
];
1561 sregs
->u
.e
.ivor_low
[2] = vcpu
->arch
.ivor
[BOOKE_IRQPRIO_DATA_STORAGE
];
1562 sregs
->u
.e
.ivor_low
[3] = vcpu
->arch
.ivor
[BOOKE_IRQPRIO_INST_STORAGE
];
1563 sregs
->u
.e
.ivor_low
[4] = vcpu
->arch
.ivor
[BOOKE_IRQPRIO_EXTERNAL
];
1564 sregs
->u
.e
.ivor_low
[5] = vcpu
->arch
.ivor
[BOOKE_IRQPRIO_ALIGNMENT
];
1565 sregs
->u
.e
.ivor_low
[6] = vcpu
->arch
.ivor
[BOOKE_IRQPRIO_PROGRAM
];
1566 sregs
->u
.e
.ivor_low
[7] = vcpu
->arch
.ivor
[BOOKE_IRQPRIO_FP_UNAVAIL
];
1567 sregs
->u
.e
.ivor_low
[8] = vcpu
->arch
.ivor
[BOOKE_IRQPRIO_SYSCALL
];
1568 sregs
->u
.e
.ivor_low
[9] = vcpu
->arch
.ivor
[BOOKE_IRQPRIO_AP_UNAVAIL
];
1569 sregs
->u
.e
.ivor_low
[10] = vcpu
->arch
.ivor
[BOOKE_IRQPRIO_DECREMENTER
];
1570 sregs
->u
.e
.ivor_low
[11] = vcpu
->arch
.ivor
[BOOKE_IRQPRIO_FIT
];
1571 sregs
->u
.e
.ivor_low
[12] = vcpu
->arch
.ivor
[BOOKE_IRQPRIO_WATCHDOG
];
1572 sregs
->u
.e
.ivor_low
[13] = vcpu
->arch
.ivor
[BOOKE_IRQPRIO_DTLB_MISS
];
1573 sregs
->u
.e
.ivor_low
[14] = vcpu
->arch
.ivor
[BOOKE_IRQPRIO_ITLB_MISS
];
1574 sregs
->u
.e
.ivor_low
[15] = vcpu
->arch
.ivor
[BOOKE_IRQPRIO_DEBUG
];
1578 int kvmppc_set_sregs_ivor(struct kvm_vcpu
*vcpu
, struct kvm_sregs
*sregs
)
1580 if (!(sregs
->u
.e
.features
& KVM_SREGS_E_IVOR
))
1583 vcpu
->arch
.ivor
[BOOKE_IRQPRIO_CRITICAL
] = sregs
->u
.e
.ivor_low
[0];
1584 vcpu
->arch
.ivor
[BOOKE_IRQPRIO_MACHINE_CHECK
] = sregs
->u
.e
.ivor_low
[1];
1585 vcpu
->arch
.ivor
[BOOKE_IRQPRIO_DATA_STORAGE
] = sregs
->u
.e
.ivor_low
[2];
1586 vcpu
->arch
.ivor
[BOOKE_IRQPRIO_INST_STORAGE
] = sregs
->u
.e
.ivor_low
[3];
1587 vcpu
->arch
.ivor
[BOOKE_IRQPRIO_EXTERNAL
] = sregs
->u
.e
.ivor_low
[4];
1588 vcpu
->arch
.ivor
[BOOKE_IRQPRIO_ALIGNMENT
] = sregs
->u
.e
.ivor_low
[5];
1589 vcpu
->arch
.ivor
[BOOKE_IRQPRIO_PROGRAM
] = sregs
->u
.e
.ivor_low
[6];
1590 vcpu
->arch
.ivor
[BOOKE_IRQPRIO_FP_UNAVAIL
] = sregs
->u
.e
.ivor_low
[7];
1591 vcpu
->arch
.ivor
[BOOKE_IRQPRIO_SYSCALL
] = sregs
->u
.e
.ivor_low
[8];
1592 vcpu
->arch
.ivor
[BOOKE_IRQPRIO_AP_UNAVAIL
] = sregs
->u
.e
.ivor_low
[9];
1593 vcpu
->arch
.ivor
[BOOKE_IRQPRIO_DECREMENTER
] = sregs
->u
.e
.ivor_low
[10];
1594 vcpu
->arch
.ivor
[BOOKE_IRQPRIO_FIT
] = sregs
->u
.e
.ivor_low
[11];
1595 vcpu
->arch
.ivor
[BOOKE_IRQPRIO_WATCHDOG
] = sregs
->u
.e
.ivor_low
[12];
1596 vcpu
->arch
.ivor
[BOOKE_IRQPRIO_DTLB_MISS
] = sregs
->u
.e
.ivor_low
[13];
1597 vcpu
->arch
.ivor
[BOOKE_IRQPRIO_ITLB_MISS
] = sregs
->u
.e
.ivor_low
[14];
1598 vcpu
->arch
.ivor
[BOOKE_IRQPRIO_DEBUG
] = sregs
->u
.e
.ivor_low
[15];
1603 int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu
*vcpu
,
1604 struct kvm_sregs
*sregs
)
1606 sregs
->pvr
= vcpu
->arch
.pvr
;
1608 get_sregs_base(vcpu
, sregs
);
1609 get_sregs_arch206(vcpu
, sregs
);
1610 return vcpu
->kvm
->arch
.kvm_ops
->get_sregs(vcpu
, sregs
);
1613 int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu
*vcpu
,
1614 struct kvm_sregs
*sregs
)
1618 if (vcpu
->arch
.pvr
!= sregs
->pvr
)
1621 ret
= set_sregs_base(vcpu
, sregs
);
1625 ret
= set_sregs_arch206(vcpu
, sregs
);
1629 return vcpu
->kvm
->arch
.kvm_ops
->set_sregs(vcpu
, sregs
);
1632 int kvmppc_get_one_reg(struct kvm_vcpu
*vcpu
, u64 id
,
1633 union kvmppc_one_reg
*val
)
1638 case KVM_REG_PPC_IAC1
:
1639 *val
= get_reg_val(id
, vcpu
->arch
.dbg_reg
.iac1
);
1641 case KVM_REG_PPC_IAC2
:
1642 *val
= get_reg_val(id
, vcpu
->arch
.dbg_reg
.iac2
);
1644 #if CONFIG_PPC_ADV_DEBUG_IACS > 2
1645 case KVM_REG_PPC_IAC3
:
1646 *val
= get_reg_val(id
, vcpu
->arch
.dbg_reg
.iac3
);
1648 case KVM_REG_PPC_IAC4
:
1649 *val
= get_reg_val(id
, vcpu
->arch
.dbg_reg
.iac4
);
1652 case KVM_REG_PPC_DAC1
:
1653 *val
= get_reg_val(id
, vcpu
->arch
.dbg_reg
.dac1
);
1655 case KVM_REG_PPC_DAC2
:
1656 *val
= get_reg_val(id
, vcpu
->arch
.dbg_reg
.dac2
);
1658 case KVM_REG_PPC_EPR
: {
1659 u32 epr
= kvmppc_get_epr(vcpu
);
1660 *val
= get_reg_val(id
, epr
);
1663 #if defined(CONFIG_64BIT)
1664 case KVM_REG_PPC_EPCR
:
1665 *val
= get_reg_val(id
, vcpu
->arch
.epcr
);
1668 case KVM_REG_PPC_TCR
:
1669 *val
= get_reg_val(id
, vcpu
->arch
.tcr
);
1671 case KVM_REG_PPC_TSR
:
1672 *val
= get_reg_val(id
, vcpu
->arch
.tsr
);
1674 case KVM_REG_PPC_DEBUG_INST
:
1675 *val
= get_reg_val(id
, KVMPPC_INST_SW_BREAKPOINT
);
1677 case KVM_REG_PPC_VRSAVE
:
1678 *val
= get_reg_val(id
, vcpu
->arch
.vrsave
);
1681 r
= vcpu
->kvm
->arch
.kvm_ops
->get_one_reg(vcpu
, id
, val
);
1688 int kvmppc_set_one_reg(struct kvm_vcpu
*vcpu
, u64 id
,
1689 union kvmppc_one_reg
*val
)
1694 case KVM_REG_PPC_IAC1
:
1695 vcpu
->arch
.dbg_reg
.iac1
= set_reg_val(id
, *val
);
1697 case KVM_REG_PPC_IAC2
:
1698 vcpu
->arch
.dbg_reg
.iac2
= set_reg_val(id
, *val
);
1700 #if CONFIG_PPC_ADV_DEBUG_IACS > 2
1701 case KVM_REG_PPC_IAC3
:
1702 vcpu
->arch
.dbg_reg
.iac3
= set_reg_val(id
, *val
);
1704 case KVM_REG_PPC_IAC4
:
1705 vcpu
->arch
.dbg_reg
.iac4
= set_reg_val(id
, *val
);
1708 case KVM_REG_PPC_DAC1
:
1709 vcpu
->arch
.dbg_reg
.dac1
= set_reg_val(id
, *val
);
1711 case KVM_REG_PPC_DAC2
:
1712 vcpu
->arch
.dbg_reg
.dac2
= set_reg_val(id
, *val
);
1714 case KVM_REG_PPC_EPR
: {
1715 u32 new_epr
= set_reg_val(id
, *val
);
1716 kvmppc_set_epr(vcpu
, new_epr
);
1719 #if defined(CONFIG_64BIT)
1720 case KVM_REG_PPC_EPCR
: {
1721 u32 new_epcr
= set_reg_val(id
, *val
);
1722 kvmppc_set_epcr(vcpu
, new_epcr
);
1726 case KVM_REG_PPC_OR_TSR
: {
1727 u32 tsr_bits
= set_reg_val(id
, *val
);
1728 kvmppc_set_tsr_bits(vcpu
, tsr_bits
);
1731 case KVM_REG_PPC_CLEAR_TSR
: {
1732 u32 tsr_bits
= set_reg_val(id
, *val
);
1733 kvmppc_clr_tsr_bits(vcpu
, tsr_bits
);
1736 case KVM_REG_PPC_TSR
: {
1737 u32 tsr
= set_reg_val(id
, *val
);
1738 kvmppc_set_tsr(vcpu
, tsr
);
1741 case KVM_REG_PPC_TCR
: {
1742 u32 tcr
= set_reg_val(id
, *val
);
1743 kvmppc_set_tcr(vcpu
, tcr
);
1746 case KVM_REG_PPC_VRSAVE
:
1747 vcpu
->arch
.vrsave
= set_reg_val(id
, *val
);
1750 r
= vcpu
->kvm
->arch
.kvm_ops
->set_one_reg(vcpu
, id
, val
);
1757 int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu
*vcpu
, struct kvm_fpu
*fpu
)
1762 int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu
*vcpu
, struct kvm_fpu
*fpu
)
1767 int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu
*vcpu
,
1768 struct kvm_translation
*tr
)
1772 r
= kvmppc_core_vcpu_translate(vcpu
, tr
);
1776 int kvm_vm_ioctl_get_dirty_log(struct kvm
*kvm
, struct kvm_dirty_log
*log
)
1781 void kvmppc_core_free_memslot(struct kvm
*kvm
, struct kvm_memory_slot
*free
,
1782 struct kvm_memory_slot
*dont
)
1786 int kvmppc_core_create_memslot(struct kvm
*kvm
, struct kvm_memory_slot
*slot
,
1787 unsigned long npages
)
1792 int kvmppc_core_prepare_memory_region(struct kvm
*kvm
,
1793 struct kvm_memory_slot
*memslot
,
1794 const struct kvm_userspace_memory_region
*mem
)
1799 void kvmppc_core_commit_memory_region(struct kvm
*kvm
,
1800 const struct kvm_userspace_memory_region
*mem
,
1801 const struct kvm_memory_slot
*old
,
1802 const struct kvm_memory_slot
*new)
1806 void kvmppc_core_flush_memslot(struct kvm
*kvm
, struct kvm_memory_slot
*memslot
)
1810 void kvmppc_set_epcr(struct kvm_vcpu
*vcpu
, u32 new_epcr
)
1812 #if defined(CONFIG_64BIT)
1813 vcpu
->arch
.epcr
= new_epcr
;
1814 #ifdef CONFIG_KVM_BOOKE_HV
1815 vcpu
->arch
.shadow_epcr
&= ~SPRN_EPCR_GICM
;
1816 if (vcpu
->arch
.epcr
& SPRN_EPCR_ICM
)
1817 vcpu
->arch
.shadow_epcr
|= SPRN_EPCR_GICM
;
1822 void kvmppc_set_tcr(struct kvm_vcpu
*vcpu
, u32 new_tcr
)
1824 vcpu
->arch
.tcr
= new_tcr
;
1825 arm_next_watchdog(vcpu
);
1826 update_timer_ints(vcpu
);
1829 void kvmppc_set_tsr_bits(struct kvm_vcpu
*vcpu
, u32 tsr_bits
)
1831 set_bits(tsr_bits
, &vcpu
->arch
.tsr
);
1833 kvm_make_request(KVM_REQ_PENDING_TIMER
, vcpu
);
1834 kvm_vcpu_kick(vcpu
);
1837 void kvmppc_clr_tsr_bits(struct kvm_vcpu
*vcpu
, u32 tsr_bits
)
1839 clear_bits(tsr_bits
, &vcpu
->arch
.tsr
);
1842 * We may have stopped the watchdog due to
1843 * being stuck on final expiration.
1845 if (tsr_bits
& (TSR_ENW
| TSR_WIS
))
1846 arm_next_watchdog(vcpu
);
1848 update_timer_ints(vcpu
);
1851 void kvmppc_decrementer_func(struct kvm_vcpu
*vcpu
)
1853 if (vcpu
->arch
.tcr
& TCR_ARE
) {
1854 vcpu
->arch
.dec
= vcpu
->arch
.decar
;
1855 kvmppc_emulate_dec(vcpu
);
1858 kvmppc_set_tsr_bits(vcpu
, TSR_DIS
);
1861 static int kvmppc_booke_add_breakpoint(struct debug_reg
*dbg_reg
,
1862 uint64_t addr
, int index
)
1866 dbg_reg
->dbcr0
|= DBCR0_IAC1
;
1867 dbg_reg
->iac1
= addr
;
1870 dbg_reg
->dbcr0
|= DBCR0_IAC2
;
1871 dbg_reg
->iac2
= addr
;
1873 #if CONFIG_PPC_ADV_DEBUG_IACS > 2
1875 dbg_reg
->dbcr0
|= DBCR0_IAC3
;
1876 dbg_reg
->iac3
= addr
;
1879 dbg_reg
->dbcr0
|= DBCR0_IAC4
;
1880 dbg_reg
->iac4
= addr
;
1887 dbg_reg
->dbcr0
|= DBCR0_IDM
;
1891 static int kvmppc_booke_add_watchpoint(struct debug_reg
*dbg_reg
, uint64_t addr
,
1892 int type
, int index
)
1896 if (type
& KVMPPC_DEBUG_WATCH_READ
)
1897 dbg_reg
->dbcr0
|= DBCR0_DAC1R
;
1898 if (type
& KVMPPC_DEBUG_WATCH_WRITE
)
1899 dbg_reg
->dbcr0
|= DBCR0_DAC1W
;
1900 dbg_reg
->dac1
= addr
;
1903 if (type
& KVMPPC_DEBUG_WATCH_READ
)
1904 dbg_reg
->dbcr0
|= DBCR0_DAC2R
;
1905 if (type
& KVMPPC_DEBUG_WATCH_WRITE
)
1906 dbg_reg
->dbcr0
|= DBCR0_DAC2W
;
1907 dbg_reg
->dac2
= addr
;
1913 dbg_reg
->dbcr0
|= DBCR0_IDM
;
1916 void kvm_guest_protect_msr(struct kvm_vcpu
*vcpu
, ulong prot_bitmap
, bool set
)
1918 /* XXX: Add similar MSR protection for BookE-PR */
1919 #ifdef CONFIG_KVM_BOOKE_HV
1920 BUG_ON(prot_bitmap
& ~(MSRP_UCLEP
| MSRP_DEP
| MSRP_PMMP
));
1922 if (prot_bitmap
& MSR_UCLE
)
1923 vcpu
->arch
.shadow_msrp
|= MSRP_UCLEP
;
1924 if (prot_bitmap
& MSR_DE
)
1925 vcpu
->arch
.shadow_msrp
|= MSRP_DEP
;
1926 if (prot_bitmap
& MSR_PMM
)
1927 vcpu
->arch
.shadow_msrp
|= MSRP_PMMP
;
1929 if (prot_bitmap
& MSR_UCLE
)
1930 vcpu
->arch
.shadow_msrp
&= ~MSRP_UCLEP
;
1931 if (prot_bitmap
& MSR_DE
)
1932 vcpu
->arch
.shadow_msrp
&= ~MSRP_DEP
;
1933 if (prot_bitmap
& MSR_PMM
)
1934 vcpu
->arch
.shadow_msrp
&= ~MSRP_PMMP
;
1939 int kvmppc_xlate(struct kvm_vcpu
*vcpu
, ulong eaddr
, enum xlate_instdata xlid
,
1940 enum xlate_readwrite xlrw
, struct kvmppc_pte
*pte
)
1945 #ifdef CONFIG_KVM_E500V2
1946 if (!(vcpu
->arch
.shared
->msr
& MSR_PR
) &&
1947 (eaddr
& PAGE_MASK
) == vcpu
->arch
.magic_page_ea
) {
1949 pte
->raddr
= (vcpu
->arch
.magic_page_pa
& PAGE_MASK
) |
1950 (eaddr
& ~PAGE_MASK
);
1951 pte
->vpage
= eaddr
>> PAGE_SHIFT
;
1952 pte
->may_read
= true;
1953 pte
->may_write
= true;
1954 pte
->may_execute
= true;
1960 /* Check the guest TLB. */
1963 gtlb_index
= kvmppc_mmu_itlb_index(vcpu
, eaddr
);
1966 gtlb_index
= kvmppc_mmu_dtlb_index(vcpu
, eaddr
);
1972 /* Do we have a TLB entry at all? */
1976 gpaddr
= kvmppc_mmu_xlate(vcpu
, gtlb_index
, eaddr
);
1979 pte
->raddr
= (gpaddr
& PAGE_MASK
) | (eaddr
& ~PAGE_MASK
);
1980 pte
->vpage
= eaddr
>> PAGE_SHIFT
;
1982 /* XXX read permissions from the guest TLB */
1983 pte
->may_read
= true;
1984 pte
->may_write
= true;
1985 pte
->may_execute
= true;
1990 int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu
*vcpu
,
1991 struct kvm_guest_debug
*dbg
)
1993 struct debug_reg
*dbg_reg
;
1994 int n
, b
= 0, w
= 0;
1996 if (!(dbg
->control
& KVM_GUESTDBG_ENABLE
)) {
1997 vcpu
->arch
.dbg_reg
.dbcr0
= 0;
1998 vcpu
->guest_debug
= 0;
1999 kvm_guest_protect_msr(vcpu
, MSR_DE
, false);
2003 kvm_guest_protect_msr(vcpu
, MSR_DE
, true);
2004 vcpu
->guest_debug
= dbg
->control
;
2005 vcpu
->arch
.dbg_reg
.dbcr0
= 0;
2007 if (vcpu
->guest_debug
& KVM_GUESTDBG_SINGLESTEP
)
2008 vcpu
->arch
.dbg_reg
.dbcr0
|= DBCR0_IDM
| DBCR0_IC
;
2010 /* Code below handles only HW breakpoints */
2011 dbg_reg
= &(vcpu
->arch
.dbg_reg
);
2013 #ifdef CONFIG_KVM_BOOKE_HV
2015 * On BookE-HV (e500mc) the guest is always executed with MSR.GS=1
2016 * DBCR1 and DBCR2 are set to trigger debug events when MSR.PR is 0
2022 * On BookE-PR (e500v2) the guest is always executed with MSR.PR=1
2023 * We set DBCR1 and DBCR2 to only trigger debug events when MSR.PR
2026 dbg_reg
->dbcr1
= DBCR1_IAC1US
| DBCR1_IAC2US
| DBCR1_IAC3US
|
2028 dbg_reg
->dbcr2
= DBCR2_DAC1US
| DBCR2_DAC2US
;
2031 if (!(vcpu
->guest_debug
& KVM_GUESTDBG_USE_HW_BP
))
2034 for (n
= 0; n
< (KVMPPC_BOOKE_IAC_NUM
+ KVMPPC_BOOKE_DAC_NUM
); n
++) {
2035 uint64_t addr
= dbg
->arch
.bp
[n
].addr
;
2036 uint32_t type
= dbg
->arch
.bp
[n
].type
;
2038 if (type
== KVMPPC_DEBUG_NONE
)
2041 if (type
& !(KVMPPC_DEBUG_WATCH_READ
|
2042 KVMPPC_DEBUG_WATCH_WRITE
|
2043 KVMPPC_DEBUG_BREAKPOINT
))
2046 if (type
& KVMPPC_DEBUG_BREAKPOINT
) {
2047 /* Setting H/W breakpoint */
2048 if (kvmppc_booke_add_breakpoint(dbg_reg
, addr
, b
++))
2051 /* Setting H/W watchpoint */
2052 if (kvmppc_booke_add_watchpoint(dbg_reg
, addr
,
2061 void kvmppc_booke_vcpu_load(struct kvm_vcpu
*vcpu
, int cpu
)
2063 vcpu
->cpu
= smp_processor_id();
2064 current
->thread
.kvm_vcpu
= vcpu
;
2067 void kvmppc_booke_vcpu_put(struct kvm_vcpu
*vcpu
)
2069 current
->thread
.kvm_vcpu
= NULL
;
2072 /* Clear pending debug event in DBSR */
2073 kvmppc_clear_dbsr();
2076 void kvmppc_mmu_destroy(struct kvm_vcpu
*vcpu
)
2078 vcpu
->kvm
->arch
.kvm_ops
->mmu_destroy(vcpu
);
2081 int kvmppc_core_init_vm(struct kvm
*kvm
)
2083 return kvm
->arch
.kvm_ops
->init_vm(kvm
);
2086 struct kvm_vcpu
*kvmppc_core_vcpu_create(struct kvm
*kvm
, unsigned int id
)
2088 return kvm
->arch
.kvm_ops
->vcpu_create(kvm
, id
);
2091 void kvmppc_core_vcpu_free(struct kvm_vcpu
*vcpu
)
2093 vcpu
->kvm
->arch
.kvm_ops
->vcpu_free(vcpu
);
2096 void kvmppc_core_destroy_vm(struct kvm
*kvm
)
2098 kvm
->arch
.kvm_ops
->destroy_vm(kvm
);
2101 void kvmppc_core_vcpu_load(struct kvm_vcpu
*vcpu
, int cpu
)
2103 vcpu
->kvm
->arch
.kvm_ops
->vcpu_load(vcpu
, cpu
);
2106 void kvmppc_core_vcpu_put(struct kvm_vcpu
*vcpu
)
2108 vcpu
->kvm
->arch
.kvm_ops
->vcpu_put(vcpu
);
2111 int __init
kvmppc_booke_init(void)
2113 #ifndef CONFIG_KVM_BOOKE_HV
2114 unsigned long ivor
[16];
2115 unsigned long *handler
= kvmppc_booke_handler_addr
;
2116 unsigned long max_ivor
= 0;
2117 unsigned long handler_len
;
2120 /* We install our own exception handlers by hijacking IVPR. IVPR must
2121 * be 16-bit aligned, so we need a 64KB allocation. */
2122 kvmppc_booke_handlers
= __get_free_pages(GFP_KERNEL
| __GFP_ZERO
,
2124 if (!kvmppc_booke_handlers
)
2127 /* XXX make sure our handlers are smaller than Linux's */
2129 /* Copy our interrupt handlers to match host IVORs. That way we don't
2130 * have to swap the IVORs on every guest/host transition. */
2131 ivor
[0] = mfspr(SPRN_IVOR0
);
2132 ivor
[1] = mfspr(SPRN_IVOR1
);
2133 ivor
[2] = mfspr(SPRN_IVOR2
);
2134 ivor
[3] = mfspr(SPRN_IVOR3
);
2135 ivor
[4] = mfspr(SPRN_IVOR4
);
2136 ivor
[5] = mfspr(SPRN_IVOR5
);
2137 ivor
[6] = mfspr(SPRN_IVOR6
);
2138 ivor
[7] = mfspr(SPRN_IVOR7
);
2139 ivor
[8] = mfspr(SPRN_IVOR8
);
2140 ivor
[9] = mfspr(SPRN_IVOR9
);
2141 ivor
[10] = mfspr(SPRN_IVOR10
);
2142 ivor
[11] = mfspr(SPRN_IVOR11
);
2143 ivor
[12] = mfspr(SPRN_IVOR12
);
2144 ivor
[13] = mfspr(SPRN_IVOR13
);
2145 ivor
[14] = mfspr(SPRN_IVOR14
);
2146 ivor
[15] = mfspr(SPRN_IVOR15
);
2148 for (i
= 0; i
< 16; i
++) {
2149 if (ivor
[i
] > max_ivor
)
2152 handler_len
= handler
[i
+ 1] - handler
[i
];
2153 memcpy((void *)kvmppc_booke_handlers
+ ivor
[i
],
2154 (void *)handler
[i
], handler_len
);
2157 handler_len
= handler
[max_ivor
+ 1] - handler
[max_ivor
];
2158 flush_icache_range(kvmppc_booke_handlers
, kvmppc_booke_handlers
+
2159 ivor
[max_ivor
] + handler_len
);
2160 #endif /* !BOOKE_HV */
2164 void __exit
kvmppc_booke_exit(void)
2166 free_pages(kvmppc_booke_handlers
, VCPU_SIZE_ORDER
);