2 * Copyright 2011 Paul Mackerras, IBM Corp. <paulus@au1.ibm.com>
3 * Copyright (C) 2009. SUSE Linux Products GmbH. All rights reserved.
6 * Paul Mackerras <paulus@au1.ibm.com>
7 * Alexander Graf <agraf@suse.de>
8 * Kevin Wolf <mail@kevin-wolf.de>
10 * Description: KVM functions specific to running on Book 3S
11 * processors in hypervisor mode (specifically POWER7 and later).
13 * This file is derived from arch/powerpc/kvm/book3s.c,
14 * by Alexander Graf <agraf@suse.de>.
16 * This program is free software; you can redistribute it and/or modify
17 * it under the terms of the GNU General Public License, version 2, as
18 * published by the Free Software Foundation.
21 #include <linux/kvm_host.h>
22 #include <linux/err.h>
23 #include <linux/slab.h>
24 #include <linux/preempt.h>
25 #include <linux/sched.h>
26 #include <linux/delay.h>
27 #include <linux/export.h>
29 #include <linux/anon_inodes.h>
30 #include <linux/cpumask.h>
31 #include <linux/spinlock.h>
32 #include <linux/page-flags.h>
33 #include <linux/srcu.h>
34 #include <linux/miscdevice.h>
35 #include <linux/debugfs.h>
38 #include <asm/cputable.h>
39 #include <asm/cache.h>
40 #include <asm/cacheflush.h>
41 #include <asm/tlbflush.h>
42 #include <asm/uaccess.h>
44 #include <asm/kvm_ppc.h>
45 #include <asm/kvm_book3s.h>
46 #include <asm/mmu_context.h>
47 #include <asm/lppaca.h>
48 #include <asm/processor.h>
49 #include <asm/cputhreads.h>
51 #include <asm/hvcall.h>
52 #include <asm/switch_to.h>
54 #include <asm/dbell.h>
55 #include <linux/gfp.h>
56 #include <linux/vmalloc.h>
57 #include <linux/highmem.h>
58 #include <linux/hugetlb.h>
59 #include <linux/module.h>
63 #define CREATE_TRACE_POINTS
66 /* #define EXIT_DEBUG */
67 /* #define EXIT_DEBUG_SIMPLE */
68 /* #define EXIT_DEBUG_INT */
70 /* Used to indicate that a guest page fault needs to be handled */
71 #define RESUME_PAGE_FAULT (RESUME_GUEST | RESUME_FLAG_ARCH1)
73 /* Used as a "null" value for timebase values */
74 #define TB_NIL (~(u64)0)
76 static DECLARE_BITMAP(default_enabled_hcalls
, MAX_HCALL_OPCODE
/4 + 1);
78 #if defined(CONFIG_PPC_64K_PAGES)
79 #define MPP_BUFFER_ORDER 0
80 #elif defined(CONFIG_PPC_4K_PAGES)
81 #define MPP_BUFFER_ORDER 3
85 static void kvmppc_end_cede(struct kvm_vcpu
*vcpu
);
86 static int kvmppc_hv_setup_htab_rma(struct kvm_vcpu
*vcpu
);
88 static bool kvmppc_ipi_thread(int cpu
)
90 /* On POWER8 for IPIs to threads in the same core, use msgsnd */
91 if (cpu_has_feature(CPU_FTR_ARCH_207S
)) {
93 if (cpu_first_thread_sibling(cpu
) ==
94 cpu_first_thread_sibling(smp_processor_id())) {
95 unsigned long msg
= PPC_DBELL_TYPE(PPC_DBELL_SERVER
);
96 msg
|= cpu_thread_in_core(cpu
);
98 __asm__
__volatile__ (PPC_MSGSND(%0) : : "r" (msg
));
105 #if defined(CONFIG_PPC_ICP_NATIVE) && defined(CONFIG_SMP)
106 if (cpu
>= 0 && cpu
< nr_cpu_ids
&& paca
[cpu
].kvm_hstate
.xics_phys
) {
115 static void kvmppc_fast_vcpu_kick_hv(struct kvm_vcpu
*vcpu
)
118 wait_queue_head_t
*wqp
;
120 wqp
= kvm_arch_vcpu_wq(vcpu
);
121 if (waitqueue_active(wqp
)) {
122 wake_up_interruptible(wqp
);
123 ++vcpu
->stat
.halt_wakeup
;
126 if (kvmppc_ipi_thread(cpu
+ vcpu
->arch
.ptid
))
129 /* CPU points to the first thread of the core */
130 if (cpu
>= 0 && cpu
< nr_cpu_ids
&& cpu_online(cpu
))
131 smp_send_reschedule(cpu
);
135 * We use the vcpu_load/put functions to measure stolen time.
136 * Stolen time is counted as time when either the vcpu is able to
137 * run as part of a virtual core, but the task running the vcore
138 * is preempted or sleeping, or when the vcpu needs something done
139 * in the kernel by the task running the vcpu, but that task is
140 * preempted or sleeping. Those two things have to be counted
141 * separately, since one of the vcpu tasks will take on the job
142 * of running the core, and the other vcpu tasks in the vcore will
143 * sleep waiting for it to do that, but that sleep shouldn't count
146 * Hence we accumulate stolen time when the vcpu can run as part of
147 * a vcore using vc->stolen_tb, and the stolen time when the vcpu
148 * needs its task to do other things in the kernel (for example,
149 * service a page fault) in busy_stolen. We don't accumulate
150 * stolen time for a vcore when it is inactive, or for a vcpu
151 * when it is in state RUNNING or NOTREADY. NOTREADY is a bit of
152 * a misnomer; it means that the vcpu task is not executing in
153 * the KVM_VCPU_RUN ioctl, i.e. it is in userspace or elsewhere in
154 * the kernel. We don't have any way of dividing up that time
155 * between time that the vcpu is genuinely stopped, time that
156 * the task is actively working on behalf of the vcpu, and time
157 * that the task is preempted, so we don't count any of it as
160 * Updates to busy_stolen are protected by arch.tbacct_lock;
161 * updates to vc->stolen_tb are protected by the vcore->stoltb_lock
162 * lock. The stolen times are measured in units of timebase ticks.
163 * (Note that the != TB_NIL checks below are purely defensive;
164 * they should never fail.)
167 static void kvmppc_core_vcpu_load_hv(struct kvm_vcpu
*vcpu
, int cpu
)
169 struct kvmppc_vcore
*vc
= vcpu
->arch
.vcore
;
173 * We can test vc->runner without taking the vcore lock,
174 * because only this task ever sets vc->runner to this
175 * vcpu, and once it is set to this vcpu, only this task
176 * ever sets it to NULL.
178 if (vc
->runner
== vcpu
&& vc
->vcore_state
!= VCORE_INACTIVE
) {
179 spin_lock_irqsave(&vc
->stoltb_lock
, flags
);
180 if (vc
->preempt_tb
!= TB_NIL
) {
181 vc
->stolen_tb
+= mftb() - vc
->preempt_tb
;
182 vc
->preempt_tb
= TB_NIL
;
184 spin_unlock_irqrestore(&vc
->stoltb_lock
, flags
);
186 spin_lock_irqsave(&vcpu
->arch
.tbacct_lock
, flags
);
187 if (vcpu
->arch
.state
== KVMPPC_VCPU_BUSY_IN_HOST
&&
188 vcpu
->arch
.busy_preempt
!= TB_NIL
) {
189 vcpu
->arch
.busy_stolen
+= mftb() - vcpu
->arch
.busy_preempt
;
190 vcpu
->arch
.busy_preempt
= TB_NIL
;
192 spin_unlock_irqrestore(&vcpu
->arch
.tbacct_lock
, flags
);
195 static void kvmppc_core_vcpu_put_hv(struct kvm_vcpu
*vcpu
)
197 struct kvmppc_vcore
*vc
= vcpu
->arch
.vcore
;
200 if (vc
->runner
== vcpu
&& vc
->vcore_state
!= VCORE_INACTIVE
) {
201 spin_lock_irqsave(&vc
->stoltb_lock
, flags
);
202 vc
->preempt_tb
= mftb();
203 spin_unlock_irqrestore(&vc
->stoltb_lock
, flags
);
205 spin_lock_irqsave(&vcpu
->arch
.tbacct_lock
, flags
);
206 if (vcpu
->arch
.state
== KVMPPC_VCPU_BUSY_IN_HOST
)
207 vcpu
->arch
.busy_preempt
= mftb();
208 spin_unlock_irqrestore(&vcpu
->arch
.tbacct_lock
, flags
);
211 static void kvmppc_set_msr_hv(struct kvm_vcpu
*vcpu
, u64 msr
)
213 vcpu
->arch
.shregs
.msr
= msr
;
214 kvmppc_end_cede(vcpu
);
217 void kvmppc_set_pvr_hv(struct kvm_vcpu
*vcpu
, u32 pvr
)
219 vcpu
->arch
.pvr
= pvr
;
222 int kvmppc_set_arch_compat(struct kvm_vcpu
*vcpu
, u32 arch_compat
)
224 unsigned long pcr
= 0;
225 struct kvmppc_vcore
*vc
= vcpu
->arch
.vcore
;
228 switch (arch_compat
) {
231 * If an arch bit is set in PCR, all the defined
232 * higher-order arch bits also have to be set.
234 pcr
= PCR_ARCH_206
| PCR_ARCH_205
;
246 if (!cpu_has_feature(CPU_FTR_ARCH_207S
)) {
247 /* POWER7 can't emulate POWER8 */
248 if (!(pcr
& PCR_ARCH_206
))
250 pcr
&= ~PCR_ARCH_206
;
254 spin_lock(&vc
->lock
);
255 vc
->arch_compat
= arch_compat
;
257 spin_unlock(&vc
->lock
);
262 void kvmppc_dump_regs(struct kvm_vcpu
*vcpu
)
266 pr_err("vcpu %p (%d):\n", vcpu
, vcpu
->vcpu_id
);
267 pr_err("pc = %.16lx msr = %.16llx trap = %x\n",
268 vcpu
->arch
.pc
, vcpu
->arch
.shregs
.msr
, vcpu
->arch
.trap
);
269 for (r
= 0; r
< 16; ++r
)
270 pr_err("r%2d = %.16lx r%d = %.16lx\n",
271 r
, kvmppc_get_gpr(vcpu
, r
),
272 r
+16, kvmppc_get_gpr(vcpu
, r
+16));
273 pr_err("ctr = %.16lx lr = %.16lx\n",
274 vcpu
->arch
.ctr
, vcpu
->arch
.lr
);
275 pr_err("srr0 = %.16llx srr1 = %.16llx\n",
276 vcpu
->arch
.shregs
.srr0
, vcpu
->arch
.shregs
.srr1
);
277 pr_err("sprg0 = %.16llx sprg1 = %.16llx\n",
278 vcpu
->arch
.shregs
.sprg0
, vcpu
->arch
.shregs
.sprg1
);
279 pr_err("sprg2 = %.16llx sprg3 = %.16llx\n",
280 vcpu
->arch
.shregs
.sprg2
, vcpu
->arch
.shregs
.sprg3
);
281 pr_err("cr = %.8x xer = %.16lx dsisr = %.8x\n",
282 vcpu
->arch
.cr
, vcpu
->arch
.xer
, vcpu
->arch
.shregs
.dsisr
);
283 pr_err("dar = %.16llx\n", vcpu
->arch
.shregs
.dar
);
284 pr_err("fault dar = %.16lx dsisr = %.8x\n",
285 vcpu
->arch
.fault_dar
, vcpu
->arch
.fault_dsisr
);
286 pr_err("SLB (%d entries):\n", vcpu
->arch
.slb_max
);
287 for (r
= 0; r
< vcpu
->arch
.slb_max
; ++r
)
288 pr_err(" ESID = %.16llx VSID = %.16llx\n",
289 vcpu
->arch
.slb
[r
].orige
, vcpu
->arch
.slb
[r
].origv
);
290 pr_err("lpcr = %.16lx sdr1 = %.16lx last_inst = %.8x\n",
291 vcpu
->arch
.vcore
->lpcr
, vcpu
->kvm
->arch
.sdr1
,
292 vcpu
->arch
.last_inst
);
295 struct kvm_vcpu
*kvmppc_find_vcpu(struct kvm
*kvm
, int id
)
298 struct kvm_vcpu
*v
, *ret
= NULL
;
300 mutex_lock(&kvm
->lock
);
301 kvm_for_each_vcpu(r
, v
, kvm
) {
302 if (v
->vcpu_id
== id
) {
307 mutex_unlock(&kvm
->lock
);
311 static void init_vpa(struct kvm_vcpu
*vcpu
, struct lppaca
*vpa
)
313 vpa
->__old_status
|= LPPACA_OLD_SHARED_PROC
;
314 vpa
->yield_count
= cpu_to_be32(1);
317 static int set_vpa(struct kvm_vcpu
*vcpu
, struct kvmppc_vpa
*v
,
318 unsigned long addr
, unsigned long len
)
320 /* check address is cacheline aligned */
321 if (addr
& (L1_CACHE_BYTES
- 1))
323 spin_lock(&vcpu
->arch
.vpa_update_lock
);
324 if (v
->next_gpa
!= addr
|| v
->len
!= len
) {
326 v
->len
= addr
? len
: 0;
327 v
->update_pending
= 1;
329 spin_unlock(&vcpu
->arch
.vpa_update_lock
);
333 /* Length for a per-processor buffer is passed in at offset 4 in the buffer */
342 static int vpa_is_registered(struct kvmppc_vpa
*vpap
)
344 if (vpap
->update_pending
)
345 return vpap
->next_gpa
!= 0;
346 return vpap
->pinned_addr
!= NULL
;
349 static unsigned long do_h_register_vpa(struct kvm_vcpu
*vcpu
,
351 unsigned long vcpuid
, unsigned long vpa
)
353 struct kvm
*kvm
= vcpu
->kvm
;
354 unsigned long len
, nb
;
356 struct kvm_vcpu
*tvcpu
;
359 struct kvmppc_vpa
*vpap
;
361 tvcpu
= kvmppc_find_vcpu(kvm
, vcpuid
);
365 subfunc
= (flags
>> H_VPA_FUNC_SHIFT
) & H_VPA_FUNC_MASK
;
366 if (subfunc
== H_VPA_REG_VPA
|| subfunc
== H_VPA_REG_DTL
||
367 subfunc
== H_VPA_REG_SLB
) {
368 /* Registering new area - address must be cache-line aligned */
369 if ((vpa
& (L1_CACHE_BYTES
- 1)) || !vpa
)
372 /* convert logical addr to kernel addr and read length */
373 va
= kvmppc_pin_guest_page(kvm
, vpa
, &nb
);
376 if (subfunc
== H_VPA_REG_VPA
)
377 len
= be16_to_cpu(((struct reg_vpa
*)va
)->length
.hword
);
379 len
= be32_to_cpu(((struct reg_vpa
*)va
)->length
.word
);
380 kvmppc_unpin_guest_page(kvm
, va
, vpa
, false);
383 if (len
> nb
|| len
< sizeof(struct reg_vpa
))
392 spin_lock(&tvcpu
->arch
.vpa_update_lock
);
395 case H_VPA_REG_VPA
: /* register VPA */
396 if (len
< sizeof(struct lppaca
))
398 vpap
= &tvcpu
->arch
.vpa
;
402 case H_VPA_REG_DTL
: /* register DTL */
403 if (len
< sizeof(struct dtl_entry
))
405 len
-= len
% sizeof(struct dtl_entry
);
407 /* Check that they have previously registered a VPA */
409 if (!vpa_is_registered(&tvcpu
->arch
.vpa
))
412 vpap
= &tvcpu
->arch
.dtl
;
416 case H_VPA_REG_SLB
: /* register SLB shadow buffer */
417 /* Check that they have previously registered a VPA */
419 if (!vpa_is_registered(&tvcpu
->arch
.vpa
))
422 vpap
= &tvcpu
->arch
.slb_shadow
;
426 case H_VPA_DEREG_VPA
: /* deregister VPA */
427 /* Check they don't still have a DTL or SLB buf registered */
429 if (vpa_is_registered(&tvcpu
->arch
.dtl
) ||
430 vpa_is_registered(&tvcpu
->arch
.slb_shadow
))
433 vpap
= &tvcpu
->arch
.vpa
;
437 case H_VPA_DEREG_DTL
: /* deregister DTL */
438 vpap
= &tvcpu
->arch
.dtl
;
442 case H_VPA_DEREG_SLB
: /* deregister SLB shadow buffer */
443 vpap
= &tvcpu
->arch
.slb_shadow
;
449 vpap
->next_gpa
= vpa
;
451 vpap
->update_pending
= 1;
454 spin_unlock(&tvcpu
->arch
.vpa_update_lock
);
459 static void kvmppc_update_vpa(struct kvm_vcpu
*vcpu
, struct kvmppc_vpa
*vpap
)
461 struct kvm
*kvm
= vcpu
->kvm
;
467 * We need to pin the page pointed to by vpap->next_gpa,
468 * but we can't call kvmppc_pin_guest_page under the lock
469 * as it does get_user_pages() and down_read(). So we
470 * have to drop the lock, pin the page, then get the lock
471 * again and check that a new area didn't get registered
475 gpa
= vpap
->next_gpa
;
476 spin_unlock(&vcpu
->arch
.vpa_update_lock
);
480 va
= kvmppc_pin_guest_page(kvm
, gpa
, &nb
);
481 spin_lock(&vcpu
->arch
.vpa_update_lock
);
482 if (gpa
== vpap
->next_gpa
)
484 /* sigh... unpin that one and try again */
486 kvmppc_unpin_guest_page(kvm
, va
, gpa
, false);
489 vpap
->update_pending
= 0;
490 if (va
&& nb
< vpap
->len
) {
492 * If it's now too short, it must be that userspace
493 * has changed the mappings underlying guest memory,
494 * so unregister the region.
496 kvmppc_unpin_guest_page(kvm
, va
, gpa
, false);
499 if (vpap
->pinned_addr
)
500 kvmppc_unpin_guest_page(kvm
, vpap
->pinned_addr
, vpap
->gpa
,
503 vpap
->pinned_addr
= va
;
506 vpap
->pinned_end
= va
+ vpap
->len
;
509 static void kvmppc_update_vpas(struct kvm_vcpu
*vcpu
)
511 if (!(vcpu
->arch
.vpa
.update_pending
||
512 vcpu
->arch
.slb_shadow
.update_pending
||
513 vcpu
->arch
.dtl
.update_pending
))
516 spin_lock(&vcpu
->arch
.vpa_update_lock
);
517 if (vcpu
->arch
.vpa
.update_pending
) {
518 kvmppc_update_vpa(vcpu
, &vcpu
->arch
.vpa
);
519 if (vcpu
->arch
.vpa
.pinned_addr
)
520 init_vpa(vcpu
, vcpu
->arch
.vpa
.pinned_addr
);
522 if (vcpu
->arch
.dtl
.update_pending
) {
523 kvmppc_update_vpa(vcpu
, &vcpu
->arch
.dtl
);
524 vcpu
->arch
.dtl_ptr
= vcpu
->arch
.dtl
.pinned_addr
;
525 vcpu
->arch
.dtl_index
= 0;
527 if (vcpu
->arch
.slb_shadow
.update_pending
)
528 kvmppc_update_vpa(vcpu
, &vcpu
->arch
.slb_shadow
);
529 spin_unlock(&vcpu
->arch
.vpa_update_lock
);
533 * Return the accumulated stolen time for the vcore up until `now'.
534 * The caller should hold the vcore lock.
536 static u64
vcore_stolen_time(struct kvmppc_vcore
*vc
, u64 now
)
541 spin_lock_irqsave(&vc
->stoltb_lock
, flags
);
543 if (vc
->vcore_state
!= VCORE_INACTIVE
&&
544 vc
->preempt_tb
!= TB_NIL
)
545 p
+= now
- vc
->preempt_tb
;
546 spin_unlock_irqrestore(&vc
->stoltb_lock
, flags
);
550 static void kvmppc_create_dtl_entry(struct kvm_vcpu
*vcpu
,
551 struct kvmppc_vcore
*vc
)
553 struct dtl_entry
*dt
;
555 unsigned long stolen
;
556 unsigned long core_stolen
;
559 dt
= vcpu
->arch
.dtl_ptr
;
560 vpa
= vcpu
->arch
.vpa
.pinned_addr
;
562 core_stolen
= vcore_stolen_time(vc
, now
);
563 stolen
= core_stolen
- vcpu
->arch
.stolen_logged
;
564 vcpu
->arch
.stolen_logged
= core_stolen
;
565 spin_lock_irq(&vcpu
->arch
.tbacct_lock
);
566 stolen
+= vcpu
->arch
.busy_stolen
;
567 vcpu
->arch
.busy_stolen
= 0;
568 spin_unlock_irq(&vcpu
->arch
.tbacct_lock
);
571 memset(dt
, 0, sizeof(struct dtl_entry
));
572 dt
->dispatch_reason
= 7;
573 dt
->processor_id
= cpu_to_be16(vc
->pcpu
+ vcpu
->arch
.ptid
);
574 dt
->timebase
= cpu_to_be64(now
+ vc
->tb_offset
);
575 dt
->enqueue_to_dispatch_time
= cpu_to_be32(stolen
);
576 dt
->srr0
= cpu_to_be64(kvmppc_get_pc(vcpu
));
577 dt
->srr1
= cpu_to_be64(vcpu
->arch
.shregs
.msr
);
579 if (dt
== vcpu
->arch
.dtl
.pinned_end
)
580 dt
= vcpu
->arch
.dtl
.pinned_addr
;
581 vcpu
->arch
.dtl_ptr
= dt
;
582 /* order writing *dt vs. writing vpa->dtl_idx */
584 vpa
->dtl_idx
= cpu_to_be64(++vcpu
->arch
.dtl_index
);
585 vcpu
->arch
.dtl
.dirty
= true;
588 static bool kvmppc_power8_compatible(struct kvm_vcpu
*vcpu
)
590 if (vcpu
->arch
.vcore
->arch_compat
>= PVR_ARCH_207
)
592 if ((!vcpu
->arch
.vcore
->arch_compat
) &&
593 cpu_has_feature(CPU_FTR_ARCH_207S
))
598 static int kvmppc_h_set_mode(struct kvm_vcpu
*vcpu
, unsigned long mflags
,
599 unsigned long resource
, unsigned long value1
,
600 unsigned long value2
)
603 case H_SET_MODE_RESOURCE_SET_CIABR
:
604 if (!kvmppc_power8_compatible(vcpu
))
609 return H_UNSUPPORTED_FLAG_START
;
610 /* Guests can't breakpoint the hypervisor */
611 if ((value1
& CIABR_PRIV
) == CIABR_PRIV_HYPER
)
613 vcpu
->arch
.ciabr
= value1
;
615 case H_SET_MODE_RESOURCE_SET_DAWR
:
616 if (!kvmppc_power8_compatible(vcpu
))
619 return H_UNSUPPORTED_FLAG_START
;
620 if (value2
& DABRX_HYP
)
622 vcpu
->arch
.dawr
= value1
;
623 vcpu
->arch
.dawrx
= value2
;
630 static int kvm_arch_vcpu_yield_to(struct kvm_vcpu
*target
)
632 struct kvmppc_vcore
*vcore
= target
->arch
.vcore
;
635 * We expect to have been called by the real mode handler
636 * (kvmppc_rm_h_confer()) which would have directly returned
637 * H_SUCCESS if the source vcore wasn't idle (e.g. if it may
638 * have useful work to do and should not confer) so we don't
642 spin_lock(&vcore
->lock
);
643 if (target
->arch
.state
== KVMPPC_VCPU_RUNNABLE
&&
644 vcore
->vcore_state
!= VCORE_INACTIVE
)
645 target
= vcore
->runner
;
646 spin_unlock(&vcore
->lock
);
648 return kvm_vcpu_yield_to(target
);
651 static int kvmppc_get_yield_count(struct kvm_vcpu
*vcpu
)
654 struct lppaca
*lppaca
;
656 spin_lock(&vcpu
->arch
.vpa_update_lock
);
657 lppaca
= (struct lppaca
*)vcpu
->arch
.vpa
.pinned_addr
;
659 yield_count
= be32_to_cpu(lppaca
->yield_count
);
660 spin_unlock(&vcpu
->arch
.vpa_update_lock
);
664 int kvmppc_pseries_do_hcall(struct kvm_vcpu
*vcpu
)
666 unsigned long req
= kvmppc_get_gpr(vcpu
, 3);
667 unsigned long target
, ret
= H_SUCCESS
;
669 struct kvm_vcpu
*tvcpu
;
672 if (req
<= MAX_HCALL_OPCODE
&&
673 !test_bit(req
/4, vcpu
->kvm
->arch
.enabled_hcalls
))
680 target
= kvmppc_get_gpr(vcpu
, 4);
681 tvcpu
= kvmppc_find_vcpu(vcpu
->kvm
, target
);
686 tvcpu
->arch
.prodded
= 1;
688 if (vcpu
->arch
.ceded
) {
689 if (waitqueue_active(&vcpu
->wq
)) {
690 wake_up_interruptible(&vcpu
->wq
);
691 vcpu
->stat
.halt_wakeup
++;
696 target
= kvmppc_get_gpr(vcpu
, 4);
699 tvcpu
= kvmppc_find_vcpu(vcpu
->kvm
, target
);
704 yield_count
= kvmppc_get_gpr(vcpu
, 5);
705 if (kvmppc_get_yield_count(tvcpu
) != yield_count
)
707 kvm_arch_vcpu_yield_to(tvcpu
);
710 ret
= do_h_register_vpa(vcpu
, kvmppc_get_gpr(vcpu
, 4),
711 kvmppc_get_gpr(vcpu
, 5),
712 kvmppc_get_gpr(vcpu
, 6));
715 if (list_empty(&vcpu
->kvm
->arch
.rtas_tokens
))
718 idx
= srcu_read_lock(&vcpu
->kvm
->srcu
);
719 rc
= kvmppc_rtas_hcall(vcpu
);
720 srcu_read_unlock(&vcpu
->kvm
->srcu
, idx
);
727 /* Send the error out to userspace via KVM_RUN */
729 case H_LOGICAL_CI_LOAD
:
730 ret
= kvmppc_h_logical_ci_load(vcpu
);
731 if (ret
== H_TOO_HARD
)
734 case H_LOGICAL_CI_STORE
:
735 ret
= kvmppc_h_logical_ci_store(vcpu
);
736 if (ret
== H_TOO_HARD
)
740 ret
= kvmppc_h_set_mode(vcpu
, kvmppc_get_gpr(vcpu
, 4),
741 kvmppc_get_gpr(vcpu
, 5),
742 kvmppc_get_gpr(vcpu
, 6),
743 kvmppc_get_gpr(vcpu
, 7));
744 if (ret
== H_TOO_HARD
)
753 if (kvmppc_xics_enabled(vcpu
)) {
754 ret
= kvmppc_xics_hcall(vcpu
, req
);
760 kvmppc_set_gpr(vcpu
, 3, ret
);
761 vcpu
->arch
.hcall_needed
= 0;
765 static int kvmppc_hcall_impl_hv(unsigned long cmd
)
773 case H_LOGICAL_CI_LOAD
:
774 case H_LOGICAL_CI_STORE
:
775 #ifdef CONFIG_KVM_XICS
786 /* See if it's in the real-mode table */
787 return kvmppc_hcall_impl_hv_realmode(cmd
);
790 static int kvmppc_emulate_debug_inst(struct kvm_run
*run
,
791 struct kvm_vcpu
*vcpu
)
795 if (kvmppc_get_last_inst(vcpu
, INST_GENERIC
, &last_inst
) !=
798 * Fetch failed, so return to guest and
799 * try executing it again.
804 if (last_inst
== KVMPPC_INST_SW_BREAKPOINT
) {
805 run
->exit_reason
= KVM_EXIT_DEBUG
;
806 run
->debug
.arch
.address
= kvmppc_get_pc(vcpu
);
809 kvmppc_core_queue_program(vcpu
, SRR1_PROGILL
);
814 static int kvmppc_handle_exit_hv(struct kvm_run
*run
, struct kvm_vcpu
*vcpu
,
815 struct task_struct
*tsk
)
819 vcpu
->stat
.sum_exits
++;
821 run
->exit_reason
= KVM_EXIT_UNKNOWN
;
822 run
->ready_for_interrupt_injection
= 1;
823 switch (vcpu
->arch
.trap
) {
824 /* We're good on these - the host merely wanted to get our attention */
825 case BOOK3S_INTERRUPT_HV_DECREMENTER
:
826 vcpu
->stat
.dec_exits
++;
829 case BOOK3S_INTERRUPT_EXTERNAL
:
830 case BOOK3S_INTERRUPT_H_DOORBELL
:
831 vcpu
->stat
.ext_intr_exits
++;
834 /* HMI is hypervisor interrupt and host has handled it. Resume guest.*/
835 case BOOK3S_INTERRUPT_HMI
:
836 case BOOK3S_INTERRUPT_PERFMON
:
839 case BOOK3S_INTERRUPT_MACHINE_CHECK
:
841 * Deliver a machine check interrupt to the guest.
842 * We have to do this, even if the host has handled the
843 * machine check, because machine checks use SRR0/1 and
844 * the interrupt might have trashed guest state in them.
846 kvmppc_book3s_queue_irqprio(vcpu
,
847 BOOK3S_INTERRUPT_MACHINE_CHECK
);
850 case BOOK3S_INTERRUPT_PROGRAM
:
854 * Normally program interrupts are delivered directly
855 * to the guest by the hardware, but we can get here
856 * as a result of a hypervisor emulation interrupt
857 * (e40) getting turned into a 700 by BML RTAS.
859 flags
= vcpu
->arch
.shregs
.msr
& 0x1f0000ull
;
860 kvmppc_core_queue_program(vcpu
, flags
);
864 case BOOK3S_INTERRUPT_SYSCALL
:
866 /* hcall - punt to userspace */
869 /* hypercall with MSR_PR has already been handled in rmode,
870 * and never reaches here.
873 run
->papr_hcall
.nr
= kvmppc_get_gpr(vcpu
, 3);
874 for (i
= 0; i
< 9; ++i
)
875 run
->papr_hcall
.args
[i
] = kvmppc_get_gpr(vcpu
, 4 + i
);
876 run
->exit_reason
= KVM_EXIT_PAPR_HCALL
;
877 vcpu
->arch
.hcall_needed
= 1;
882 * We get these next two if the guest accesses a page which it thinks
883 * it has mapped but which is not actually present, either because
884 * it is for an emulated I/O device or because the corresonding
885 * host page has been paged out. Any other HDSI/HISI interrupts
886 * have been handled already.
888 case BOOK3S_INTERRUPT_H_DATA_STORAGE
:
889 r
= RESUME_PAGE_FAULT
;
891 case BOOK3S_INTERRUPT_H_INST_STORAGE
:
892 vcpu
->arch
.fault_dar
= kvmppc_get_pc(vcpu
);
893 vcpu
->arch
.fault_dsisr
= 0;
894 r
= RESUME_PAGE_FAULT
;
897 * This occurs if the guest executes an illegal instruction.
898 * If the guest debug is disabled, generate a program interrupt
899 * to the guest. If guest debug is enabled, we need to check
900 * whether the instruction is a software breakpoint instruction.
901 * Accordingly return to Guest or Host.
903 case BOOK3S_INTERRUPT_H_EMUL_ASSIST
:
904 if (vcpu
->arch
.emul_inst
!= KVM_INST_FETCH_FAILED
)
905 vcpu
->arch
.last_inst
= kvmppc_need_byteswap(vcpu
) ?
906 swab32(vcpu
->arch
.emul_inst
) :
907 vcpu
->arch
.emul_inst
;
908 if (vcpu
->guest_debug
& KVM_GUESTDBG_USE_SW_BP
) {
909 r
= kvmppc_emulate_debug_inst(run
, vcpu
);
911 kvmppc_core_queue_program(vcpu
, SRR1_PROGILL
);
916 * This occurs if the guest (kernel or userspace), does something that
917 * is prohibited by HFSCR. We just generate a program interrupt to
920 case BOOK3S_INTERRUPT_H_FAC_UNAVAIL
:
921 kvmppc_core_queue_program(vcpu
, SRR1_PROGILL
);
925 kvmppc_dump_regs(vcpu
);
926 printk(KERN_EMERG
"trap=0x%x | pc=0x%lx | msr=0x%llx\n",
927 vcpu
->arch
.trap
, kvmppc_get_pc(vcpu
),
928 vcpu
->arch
.shregs
.msr
);
929 run
->hw
.hardware_exit_reason
= vcpu
->arch
.trap
;
937 static int kvm_arch_vcpu_ioctl_get_sregs_hv(struct kvm_vcpu
*vcpu
,
938 struct kvm_sregs
*sregs
)
942 memset(sregs
, 0, sizeof(struct kvm_sregs
));
943 sregs
->pvr
= vcpu
->arch
.pvr
;
944 for (i
= 0; i
< vcpu
->arch
.slb_max
; i
++) {
945 sregs
->u
.s
.ppc64
.slb
[i
].slbe
= vcpu
->arch
.slb
[i
].orige
;
946 sregs
->u
.s
.ppc64
.slb
[i
].slbv
= vcpu
->arch
.slb
[i
].origv
;
952 static int kvm_arch_vcpu_ioctl_set_sregs_hv(struct kvm_vcpu
*vcpu
,
953 struct kvm_sregs
*sregs
)
957 /* Only accept the same PVR as the host's, since we can't spoof it */
958 if (sregs
->pvr
!= vcpu
->arch
.pvr
)
962 for (i
= 0; i
< vcpu
->arch
.slb_nr
; i
++) {
963 if (sregs
->u
.s
.ppc64
.slb
[i
].slbe
& SLB_ESID_V
) {
964 vcpu
->arch
.slb
[j
].orige
= sregs
->u
.s
.ppc64
.slb
[i
].slbe
;
965 vcpu
->arch
.slb
[j
].origv
= sregs
->u
.s
.ppc64
.slb
[i
].slbv
;
969 vcpu
->arch
.slb_max
= j
;
974 static void kvmppc_set_lpcr(struct kvm_vcpu
*vcpu
, u64 new_lpcr
,
977 struct kvm
*kvm
= vcpu
->kvm
;
978 struct kvmppc_vcore
*vc
= vcpu
->arch
.vcore
;
981 mutex_lock(&kvm
->lock
);
982 spin_lock(&vc
->lock
);
984 * If ILE (interrupt little-endian) has changed, update the
985 * MSR_LE bit in the intr_msr for each vcpu in this vcore.
987 if ((new_lpcr
& LPCR_ILE
) != (vc
->lpcr
& LPCR_ILE
)) {
988 struct kvm_vcpu
*vcpu
;
991 kvm_for_each_vcpu(i
, vcpu
, kvm
) {
992 if (vcpu
->arch
.vcore
!= vc
)
994 if (new_lpcr
& LPCR_ILE
)
995 vcpu
->arch
.intr_msr
|= MSR_LE
;
997 vcpu
->arch
.intr_msr
&= ~MSR_LE
;
1002 * Userspace can only modify DPFD (default prefetch depth),
1003 * ILE (interrupt little-endian) and TC (translation control).
1004 * On POWER8 userspace can also modify AIL (alt. interrupt loc.)
1006 mask
= LPCR_DPFD
| LPCR_ILE
| LPCR_TC
;
1007 if (cpu_has_feature(CPU_FTR_ARCH_207S
))
1010 /* Broken 32-bit version of LPCR must not clear top bits */
1013 vc
->lpcr
= (vc
->lpcr
& ~mask
) | (new_lpcr
& mask
);
1014 spin_unlock(&vc
->lock
);
1015 mutex_unlock(&kvm
->lock
);
1018 static int kvmppc_get_one_reg_hv(struct kvm_vcpu
*vcpu
, u64 id
,
1019 union kvmppc_one_reg
*val
)
1025 case KVM_REG_PPC_DEBUG_INST
:
1026 *val
= get_reg_val(id
, KVMPPC_INST_SW_BREAKPOINT
);
1028 case KVM_REG_PPC_HIOR
:
1029 *val
= get_reg_val(id
, 0);
1031 case KVM_REG_PPC_DABR
:
1032 *val
= get_reg_val(id
, vcpu
->arch
.dabr
);
1034 case KVM_REG_PPC_DABRX
:
1035 *val
= get_reg_val(id
, vcpu
->arch
.dabrx
);
1037 case KVM_REG_PPC_DSCR
:
1038 *val
= get_reg_val(id
, vcpu
->arch
.dscr
);
1040 case KVM_REG_PPC_PURR
:
1041 *val
= get_reg_val(id
, vcpu
->arch
.purr
);
1043 case KVM_REG_PPC_SPURR
:
1044 *val
= get_reg_val(id
, vcpu
->arch
.spurr
);
1046 case KVM_REG_PPC_AMR
:
1047 *val
= get_reg_val(id
, vcpu
->arch
.amr
);
1049 case KVM_REG_PPC_UAMOR
:
1050 *val
= get_reg_val(id
, vcpu
->arch
.uamor
);
1052 case KVM_REG_PPC_MMCR0
... KVM_REG_PPC_MMCRS
:
1053 i
= id
- KVM_REG_PPC_MMCR0
;
1054 *val
= get_reg_val(id
, vcpu
->arch
.mmcr
[i
]);
1056 case KVM_REG_PPC_PMC1
... KVM_REG_PPC_PMC8
:
1057 i
= id
- KVM_REG_PPC_PMC1
;
1058 *val
= get_reg_val(id
, vcpu
->arch
.pmc
[i
]);
1060 case KVM_REG_PPC_SPMC1
... KVM_REG_PPC_SPMC2
:
1061 i
= id
- KVM_REG_PPC_SPMC1
;
1062 *val
= get_reg_val(id
, vcpu
->arch
.spmc
[i
]);
1064 case KVM_REG_PPC_SIAR
:
1065 *val
= get_reg_val(id
, vcpu
->arch
.siar
);
1067 case KVM_REG_PPC_SDAR
:
1068 *val
= get_reg_val(id
, vcpu
->arch
.sdar
);
1070 case KVM_REG_PPC_SIER
:
1071 *val
= get_reg_val(id
, vcpu
->arch
.sier
);
1073 case KVM_REG_PPC_IAMR
:
1074 *val
= get_reg_val(id
, vcpu
->arch
.iamr
);
1076 case KVM_REG_PPC_PSPB
:
1077 *val
= get_reg_val(id
, vcpu
->arch
.pspb
);
1079 case KVM_REG_PPC_DPDES
:
1080 *val
= get_reg_val(id
, vcpu
->arch
.vcore
->dpdes
);
1082 case KVM_REG_PPC_DAWR
:
1083 *val
= get_reg_val(id
, vcpu
->arch
.dawr
);
1085 case KVM_REG_PPC_DAWRX
:
1086 *val
= get_reg_val(id
, vcpu
->arch
.dawrx
);
1088 case KVM_REG_PPC_CIABR
:
1089 *val
= get_reg_val(id
, vcpu
->arch
.ciabr
);
1091 case KVM_REG_PPC_CSIGR
:
1092 *val
= get_reg_val(id
, vcpu
->arch
.csigr
);
1094 case KVM_REG_PPC_TACR
:
1095 *val
= get_reg_val(id
, vcpu
->arch
.tacr
);
1097 case KVM_REG_PPC_TCSCR
:
1098 *val
= get_reg_val(id
, vcpu
->arch
.tcscr
);
1100 case KVM_REG_PPC_PID
:
1101 *val
= get_reg_val(id
, vcpu
->arch
.pid
);
1103 case KVM_REG_PPC_ACOP
:
1104 *val
= get_reg_val(id
, vcpu
->arch
.acop
);
1106 case KVM_REG_PPC_WORT
:
1107 *val
= get_reg_val(id
, vcpu
->arch
.wort
);
1109 case KVM_REG_PPC_VPA_ADDR
:
1110 spin_lock(&vcpu
->arch
.vpa_update_lock
);
1111 *val
= get_reg_val(id
, vcpu
->arch
.vpa
.next_gpa
);
1112 spin_unlock(&vcpu
->arch
.vpa_update_lock
);
1114 case KVM_REG_PPC_VPA_SLB
:
1115 spin_lock(&vcpu
->arch
.vpa_update_lock
);
1116 val
->vpaval
.addr
= vcpu
->arch
.slb_shadow
.next_gpa
;
1117 val
->vpaval
.length
= vcpu
->arch
.slb_shadow
.len
;
1118 spin_unlock(&vcpu
->arch
.vpa_update_lock
);
1120 case KVM_REG_PPC_VPA_DTL
:
1121 spin_lock(&vcpu
->arch
.vpa_update_lock
);
1122 val
->vpaval
.addr
= vcpu
->arch
.dtl
.next_gpa
;
1123 val
->vpaval
.length
= vcpu
->arch
.dtl
.len
;
1124 spin_unlock(&vcpu
->arch
.vpa_update_lock
);
1126 case KVM_REG_PPC_TB_OFFSET
:
1127 *val
= get_reg_val(id
, vcpu
->arch
.vcore
->tb_offset
);
1129 case KVM_REG_PPC_LPCR
:
1130 case KVM_REG_PPC_LPCR_64
:
1131 *val
= get_reg_val(id
, vcpu
->arch
.vcore
->lpcr
);
1133 case KVM_REG_PPC_PPR
:
1134 *val
= get_reg_val(id
, vcpu
->arch
.ppr
);
1136 #ifdef CONFIG_PPC_TRANSACTIONAL_MEM
1137 case KVM_REG_PPC_TFHAR
:
1138 *val
= get_reg_val(id
, vcpu
->arch
.tfhar
);
1140 case KVM_REG_PPC_TFIAR
:
1141 *val
= get_reg_val(id
, vcpu
->arch
.tfiar
);
1143 case KVM_REG_PPC_TEXASR
:
1144 *val
= get_reg_val(id
, vcpu
->arch
.texasr
);
1146 case KVM_REG_PPC_TM_GPR0
... KVM_REG_PPC_TM_GPR31
:
1147 i
= id
- KVM_REG_PPC_TM_GPR0
;
1148 *val
= get_reg_val(id
, vcpu
->arch
.gpr_tm
[i
]);
1150 case KVM_REG_PPC_TM_VSR0
... KVM_REG_PPC_TM_VSR63
:
1153 i
= id
- KVM_REG_PPC_TM_VSR0
;
1155 for (j
= 0; j
< TS_FPRWIDTH
; j
++)
1156 val
->vsxval
[j
] = vcpu
->arch
.fp_tm
.fpr
[i
][j
];
1158 if (cpu_has_feature(CPU_FTR_ALTIVEC
))
1159 val
->vval
= vcpu
->arch
.vr_tm
.vr
[i
-32];
1165 case KVM_REG_PPC_TM_CR
:
1166 *val
= get_reg_val(id
, vcpu
->arch
.cr_tm
);
1168 case KVM_REG_PPC_TM_LR
:
1169 *val
= get_reg_val(id
, vcpu
->arch
.lr_tm
);
1171 case KVM_REG_PPC_TM_CTR
:
1172 *val
= get_reg_val(id
, vcpu
->arch
.ctr_tm
);
1174 case KVM_REG_PPC_TM_FPSCR
:
1175 *val
= get_reg_val(id
, vcpu
->arch
.fp_tm
.fpscr
);
1177 case KVM_REG_PPC_TM_AMR
:
1178 *val
= get_reg_val(id
, vcpu
->arch
.amr_tm
);
1180 case KVM_REG_PPC_TM_PPR
:
1181 *val
= get_reg_val(id
, vcpu
->arch
.ppr_tm
);
1183 case KVM_REG_PPC_TM_VRSAVE
:
1184 *val
= get_reg_val(id
, vcpu
->arch
.vrsave_tm
);
1186 case KVM_REG_PPC_TM_VSCR
:
1187 if (cpu_has_feature(CPU_FTR_ALTIVEC
))
1188 *val
= get_reg_val(id
, vcpu
->arch
.vr_tm
.vscr
.u
[3]);
1192 case KVM_REG_PPC_TM_DSCR
:
1193 *val
= get_reg_val(id
, vcpu
->arch
.dscr_tm
);
1195 case KVM_REG_PPC_TM_TAR
:
1196 *val
= get_reg_val(id
, vcpu
->arch
.tar_tm
);
1199 case KVM_REG_PPC_ARCH_COMPAT
:
1200 *val
= get_reg_val(id
, vcpu
->arch
.vcore
->arch_compat
);
1210 static int kvmppc_set_one_reg_hv(struct kvm_vcpu
*vcpu
, u64 id
,
1211 union kvmppc_one_reg
*val
)
1215 unsigned long addr
, len
;
1218 case KVM_REG_PPC_HIOR
:
1219 /* Only allow this to be set to zero */
1220 if (set_reg_val(id
, *val
))
1223 case KVM_REG_PPC_DABR
:
1224 vcpu
->arch
.dabr
= set_reg_val(id
, *val
);
1226 case KVM_REG_PPC_DABRX
:
1227 vcpu
->arch
.dabrx
= set_reg_val(id
, *val
) & ~DABRX_HYP
;
1229 case KVM_REG_PPC_DSCR
:
1230 vcpu
->arch
.dscr
= set_reg_val(id
, *val
);
1232 case KVM_REG_PPC_PURR
:
1233 vcpu
->arch
.purr
= set_reg_val(id
, *val
);
1235 case KVM_REG_PPC_SPURR
:
1236 vcpu
->arch
.spurr
= set_reg_val(id
, *val
);
1238 case KVM_REG_PPC_AMR
:
1239 vcpu
->arch
.amr
= set_reg_val(id
, *val
);
1241 case KVM_REG_PPC_UAMOR
:
1242 vcpu
->arch
.uamor
= set_reg_val(id
, *val
);
1244 case KVM_REG_PPC_MMCR0
... KVM_REG_PPC_MMCRS
:
1245 i
= id
- KVM_REG_PPC_MMCR0
;
1246 vcpu
->arch
.mmcr
[i
] = set_reg_val(id
, *val
);
1248 case KVM_REG_PPC_PMC1
... KVM_REG_PPC_PMC8
:
1249 i
= id
- KVM_REG_PPC_PMC1
;
1250 vcpu
->arch
.pmc
[i
] = set_reg_val(id
, *val
);
1252 case KVM_REG_PPC_SPMC1
... KVM_REG_PPC_SPMC2
:
1253 i
= id
- KVM_REG_PPC_SPMC1
;
1254 vcpu
->arch
.spmc
[i
] = set_reg_val(id
, *val
);
1256 case KVM_REG_PPC_SIAR
:
1257 vcpu
->arch
.siar
= set_reg_val(id
, *val
);
1259 case KVM_REG_PPC_SDAR
:
1260 vcpu
->arch
.sdar
= set_reg_val(id
, *val
);
1262 case KVM_REG_PPC_SIER
:
1263 vcpu
->arch
.sier
= set_reg_val(id
, *val
);
1265 case KVM_REG_PPC_IAMR
:
1266 vcpu
->arch
.iamr
= set_reg_val(id
, *val
);
1268 case KVM_REG_PPC_PSPB
:
1269 vcpu
->arch
.pspb
= set_reg_val(id
, *val
);
1271 case KVM_REG_PPC_DPDES
:
1272 vcpu
->arch
.vcore
->dpdes
= set_reg_val(id
, *val
);
1274 case KVM_REG_PPC_DAWR
:
1275 vcpu
->arch
.dawr
= set_reg_val(id
, *val
);
1277 case KVM_REG_PPC_DAWRX
:
1278 vcpu
->arch
.dawrx
= set_reg_val(id
, *val
) & ~DAWRX_HYP
;
1280 case KVM_REG_PPC_CIABR
:
1281 vcpu
->arch
.ciabr
= set_reg_val(id
, *val
);
1282 /* Don't allow setting breakpoints in hypervisor code */
1283 if ((vcpu
->arch
.ciabr
& CIABR_PRIV
) == CIABR_PRIV_HYPER
)
1284 vcpu
->arch
.ciabr
&= ~CIABR_PRIV
; /* disable */
1286 case KVM_REG_PPC_CSIGR
:
1287 vcpu
->arch
.csigr
= set_reg_val(id
, *val
);
1289 case KVM_REG_PPC_TACR
:
1290 vcpu
->arch
.tacr
= set_reg_val(id
, *val
);
1292 case KVM_REG_PPC_TCSCR
:
1293 vcpu
->arch
.tcscr
= set_reg_val(id
, *val
);
1295 case KVM_REG_PPC_PID
:
1296 vcpu
->arch
.pid
= set_reg_val(id
, *val
);
1298 case KVM_REG_PPC_ACOP
:
1299 vcpu
->arch
.acop
= set_reg_val(id
, *val
);
1301 case KVM_REG_PPC_WORT
:
1302 vcpu
->arch
.wort
= set_reg_val(id
, *val
);
1304 case KVM_REG_PPC_VPA_ADDR
:
1305 addr
= set_reg_val(id
, *val
);
1307 if (!addr
&& (vcpu
->arch
.slb_shadow
.next_gpa
||
1308 vcpu
->arch
.dtl
.next_gpa
))
1310 r
= set_vpa(vcpu
, &vcpu
->arch
.vpa
, addr
, sizeof(struct lppaca
));
1312 case KVM_REG_PPC_VPA_SLB
:
1313 addr
= val
->vpaval
.addr
;
1314 len
= val
->vpaval
.length
;
1316 if (addr
&& !vcpu
->arch
.vpa
.next_gpa
)
1318 r
= set_vpa(vcpu
, &vcpu
->arch
.slb_shadow
, addr
, len
);
1320 case KVM_REG_PPC_VPA_DTL
:
1321 addr
= val
->vpaval
.addr
;
1322 len
= val
->vpaval
.length
;
1324 if (addr
&& (len
< sizeof(struct dtl_entry
) ||
1325 !vcpu
->arch
.vpa
.next_gpa
))
1327 len
-= len
% sizeof(struct dtl_entry
);
1328 r
= set_vpa(vcpu
, &vcpu
->arch
.dtl
, addr
, len
);
1330 case KVM_REG_PPC_TB_OFFSET
:
1331 /* round up to multiple of 2^24 */
1332 vcpu
->arch
.vcore
->tb_offset
=
1333 ALIGN(set_reg_val(id
, *val
), 1UL << 24);
1335 case KVM_REG_PPC_LPCR
:
1336 kvmppc_set_lpcr(vcpu
, set_reg_val(id
, *val
), true);
1338 case KVM_REG_PPC_LPCR_64
:
1339 kvmppc_set_lpcr(vcpu
, set_reg_val(id
, *val
), false);
1341 case KVM_REG_PPC_PPR
:
1342 vcpu
->arch
.ppr
= set_reg_val(id
, *val
);
1344 #ifdef CONFIG_PPC_TRANSACTIONAL_MEM
1345 case KVM_REG_PPC_TFHAR
:
1346 vcpu
->arch
.tfhar
= set_reg_val(id
, *val
);
1348 case KVM_REG_PPC_TFIAR
:
1349 vcpu
->arch
.tfiar
= set_reg_val(id
, *val
);
1351 case KVM_REG_PPC_TEXASR
:
1352 vcpu
->arch
.texasr
= set_reg_val(id
, *val
);
1354 case KVM_REG_PPC_TM_GPR0
... KVM_REG_PPC_TM_GPR31
:
1355 i
= id
- KVM_REG_PPC_TM_GPR0
;
1356 vcpu
->arch
.gpr_tm
[i
] = set_reg_val(id
, *val
);
1358 case KVM_REG_PPC_TM_VSR0
... KVM_REG_PPC_TM_VSR63
:
1361 i
= id
- KVM_REG_PPC_TM_VSR0
;
1363 for (j
= 0; j
< TS_FPRWIDTH
; j
++)
1364 vcpu
->arch
.fp_tm
.fpr
[i
][j
] = val
->vsxval
[j
];
1366 if (cpu_has_feature(CPU_FTR_ALTIVEC
))
1367 vcpu
->arch
.vr_tm
.vr
[i
-32] = val
->vval
;
1372 case KVM_REG_PPC_TM_CR
:
1373 vcpu
->arch
.cr_tm
= set_reg_val(id
, *val
);
1375 case KVM_REG_PPC_TM_LR
:
1376 vcpu
->arch
.lr_tm
= set_reg_val(id
, *val
);
1378 case KVM_REG_PPC_TM_CTR
:
1379 vcpu
->arch
.ctr_tm
= set_reg_val(id
, *val
);
1381 case KVM_REG_PPC_TM_FPSCR
:
1382 vcpu
->arch
.fp_tm
.fpscr
= set_reg_val(id
, *val
);
1384 case KVM_REG_PPC_TM_AMR
:
1385 vcpu
->arch
.amr_tm
= set_reg_val(id
, *val
);
1387 case KVM_REG_PPC_TM_PPR
:
1388 vcpu
->arch
.ppr_tm
= set_reg_val(id
, *val
);
1390 case KVM_REG_PPC_TM_VRSAVE
:
1391 vcpu
->arch
.vrsave_tm
= set_reg_val(id
, *val
);
1393 case KVM_REG_PPC_TM_VSCR
:
1394 if (cpu_has_feature(CPU_FTR_ALTIVEC
))
1395 vcpu
->arch
.vr
.vscr
.u
[3] = set_reg_val(id
, *val
);
1399 case KVM_REG_PPC_TM_DSCR
:
1400 vcpu
->arch
.dscr_tm
= set_reg_val(id
, *val
);
1402 case KVM_REG_PPC_TM_TAR
:
1403 vcpu
->arch
.tar_tm
= set_reg_val(id
, *val
);
1406 case KVM_REG_PPC_ARCH_COMPAT
:
1407 r
= kvmppc_set_arch_compat(vcpu
, set_reg_val(id
, *val
));
1417 static struct kvmppc_vcore
*kvmppc_vcore_create(struct kvm
*kvm
, int core
)
1419 struct kvmppc_vcore
*vcore
;
1421 vcore
= kzalloc(sizeof(struct kvmppc_vcore
), GFP_KERNEL
);
1426 INIT_LIST_HEAD(&vcore
->runnable_threads
);
1427 spin_lock_init(&vcore
->lock
);
1428 spin_lock_init(&vcore
->stoltb_lock
);
1429 init_waitqueue_head(&vcore
->wq
);
1430 vcore
->preempt_tb
= TB_NIL
;
1431 vcore
->lpcr
= kvm
->arch
.lpcr
;
1432 vcore
->first_vcpuid
= core
* threads_per_subcore
;
1435 vcore
->mpp_buffer_is_valid
= false;
1437 if (cpu_has_feature(CPU_FTR_ARCH_207S
))
1438 vcore
->mpp_buffer
= (void *)__get_free_pages(
1439 GFP_KERNEL
|__GFP_ZERO
,
1445 #ifdef CONFIG_KVM_BOOK3S_HV_EXIT_TIMING
1446 static struct debugfs_timings_element
{
1450 {"rm_entry", offsetof(struct kvm_vcpu
, arch
.rm_entry
)},
1451 {"rm_intr", offsetof(struct kvm_vcpu
, arch
.rm_intr
)},
1452 {"rm_exit", offsetof(struct kvm_vcpu
, arch
.rm_exit
)},
1453 {"guest", offsetof(struct kvm_vcpu
, arch
.guest_time
)},
1454 {"cede", offsetof(struct kvm_vcpu
, arch
.cede_time
)},
1457 #define N_TIMINGS (sizeof(timings) / sizeof(timings[0]))
1459 struct debugfs_timings_state
{
1460 struct kvm_vcpu
*vcpu
;
1461 unsigned int buflen
;
1462 char buf
[N_TIMINGS
* 100];
1465 static int debugfs_timings_open(struct inode
*inode
, struct file
*file
)
1467 struct kvm_vcpu
*vcpu
= inode
->i_private
;
1468 struct debugfs_timings_state
*p
;
1470 p
= kzalloc(sizeof(*p
), GFP_KERNEL
);
1474 kvm_get_kvm(vcpu
->kvm
);
1476 file
->private_data
= p
;
1478 return nonseekable_open(inode
, file
);
1481 static int debugfs_timings_release(struct inode
*inode
, struct file
*file
)
1483 struct debugfs_timings_state
*p
= file
->private_data
;
1485 kvm_put_kvm(p
->vcpu
->kvm
);
1490 static ssize_t
debugfs_timings_read(struct file
*file
, char __user
*buf
,
1491 size_t len
, loff_t
*ppos
)
1493 struct debugfs_timings_state
*p
= file
->private_data
;
1494 struct kvm_vcpu
*vcpu
= p
->vcpu
;
1496 struct kvmhv_tb_accumulator tb
;
1505 buf_end
= s
+ sizeof(p
->buf
);
1506 for (i
= 0; i
< N_TIMINGS
; ++i
) {
1507 struct kvmhv_tb_accumulator
*acc
;
1509 acc
= (struct kvmhv_tb_accumulator
*)
1510 ((unsigned long)vcpu
+ timings
[i
].offset
);
1512 for (loops
= 0; loops
< 1000; ++loops
) {
1513 count
= acc
->seqcount
;
1518 if (count
== acc
->seqcount
) {
1526 snprintf(s
, buf_end
- s
, "%s: stuck\n",
1529 snprintf(s
, buf_end
- s
,
1530 "%s: %llu %llu %llu %llu\n",
1531 timings
[i
].name
, count
/ 2,
1532 tb_to_ns(tb
.tb_total
),
1533 tb_to_ns(tb
.tb_min
),
1534 tb_to_ns(tb
.tb_max
));
1537 p
->buflen
= s
- p
->buf
;
1541 if (pos
>= p
->buflen
)
1543 if (len
> p
->buflen
- pos
)
1544 len
= p
->buflen
- pos
;
1545 n
= copy_to_user(buf
, p
->buf
+ pos
, len
);
1555 static ssize_t
debugfs_timings_write(struct file
*file
, const char __user
*buf
,
1556 size_t len
, loff_t
*ppos
)
1561 static const struct file_operations debugfs_timings_ops
= {
1562 .owner
= THIS_MODULE
,
1563 .open
= debugfs_timings_open
,
1564 .release
= debugfs_timings_release
,
1565 .read
= debugfs_timings_read
,
1566 .write
= debugfs_timings_write
,
1567 .llseek
= generic_file_llseek
,
1570 /* Create a debugfs directory for the vcpu */
1571 static void debugfs_vcpu_init(struct kvm_vcpu
*vcpu
, unsigned int id
)
1574 struct kvm
*kvm
= vcpu
->kvm
;
1576 snprintf(buf
, sizeof(buf
), "vcpu%u", id
);
1577 if (IS_ERR_OR_NULL(kvm
->arch
.debugfs_dir
))
1579 vcpu
->arch
.debugfs_dir
= debugfs_create_dir(buf
, kvm
->arch
.debugfs_dir
);
1580 if (IS_ERR_OR_NULL(vcpu
->arch
.debugfs_dir
))
1582 vcpu
->arch
.debugfs_timings
=
1583 debugfs_create_file("timings", 0444, vcpu
->arch
.debugfs_dir
,
1584 vcpu
, &debugfs_timings_ops
);
1587 #else /* CONFIG_KVM_BOOK3S_HV_EXIT_TIMING */
1588 static void debugfs_vcpu_init(struct kvm_vcpu
*vcpu
, unsigned int id
)
1591 #endif /* CONFIG_KVM_BOOK3S_HV_EXIT_TIMING */
1593 static struct kvm_vcpu
*kvmppc_core_vcpu_create_hv(struct kvm
*kvm
,
1596 struct kvm_vcpu
*vcpu
;
1599 struct kvmppc_vcore
*vcore
;
1601 core
= id
/ threads_per_subcore
;
1602 if (core
>= KVM_MAX_VCORES
)
1606 vcpu
= kmem_cache_zalloc(kvm_vcpu_cache
, GFP_KERNEL
);
1610 err
= kvm_vcpu_init(vcpu
, kvm
, id
);
1614 vcpu
->arch
.shared
= &vcpu
->arch
.shregs
;
1615 #ifdef CONFIG_KVM_BOOK3S_PR_POSSIBLE
1617 * The shared struct is never shared on HV,
1618 * so we can always use host endianness
1620 #ifdef __BIG_ENDIAN__
1621 vcpu
->arch
.shared_big_endian
= true;
1623 vcpu
->arch
.shared_big_endian
= false;
1626 vcpu
->arch
.mmcr
[0] = MMCR0_FC
;
1627 vcpu
->arch
.ctrl
= CTRL_RUNLATCH
;
1628 /* default to host PVR, since we can't spoof it */
1629 kvmppc_set_pvr_hv(vcpu
, mfspr(SPRN_PVR
));
1630 spin_lock_init(&vcpu
->arch
.vpa_update_lock
);
1631 spin_lock_init(&vcpu
->arch
.tbacct_lock
);
1632 vcpu
->arch
.busy_preempt
= TB_NIL
;
1633 vcpu
->arch
.intr_msr
= MSR_SF
| MSR_ME
;
1635 kvmppc_mmu_book3s_hv_init(vcpu
);
1637 vcpu
->arch
.state
= KVMPPC_VCPU_NOTREADY
;
1639 init_waitqueue_head(&vcpu
->arch
.cpu_run
);
1641 mutex_lock(&kvm
->lock
);
1642 vcore
= kvm
->arch
.vcores
[core
];
1644 vcore
= kvmppc_vcore_create(kvm
, core
);
1645 kvm
->arch
.vcores
[core
] = vcore
;
1646 kvm
->arch
.online_vcores
++;
1648 mutex_unlock(&kvm
->lock
);
1653 spin_lock(&vcore
->lock
);
1654 ++vcore
->num_threads
;
1655 spin_unlock(&vcore
->lock
);
1656 vcpu
->arch
.vcore
= vcore
;
1657 vcpu
->arch
.ptid
= vcpu
->vcpu_id
- vcore
->first_vcpuid
;
1659 vcpu
->arch
.cpu_type
= KVM_CPU_3S_64
;
1660 kvmppc_sanity_check(vcpu
);
1662 debugfs_vcpu_init(vcpu
, id
);
1667 kmem_cache_free(kvm_vcpu_cache
, vcpu
);
1669 return ERR_PTR(err
);
1672 static void unpin_vpa(struct kvm
*kvm
, struct kvmppc_vpa
*vpa
)
1674 if (vpa
->pinned_addr
)
1675 kvmppc_unpin_guest_page(kvm
, vpa
->pinned_addr
, vpa
->gpa
,
1679 static void kvmppc_core_vcpu_free_hv(struct kvm_vcpu
*vcpu
)
1681 spin_lock(&vcpu
->arch
.vpa_update_lock
);
1682 unpin_vpa(vcpu
->kvm
, &vcpu
->arch
.dtl
);
1683 unpin_vpa(vcpu
->kvm
, &vcpu
->arch
.slb_shadow
);
1684 unpin_vpa(vcpu
->kvm
, &vcpu
->arch
.vpa
);
1685 spin_unlock(&vcpu
->arch
.vpa_update_lock
);
1686 kvm_vcpu_uninit(vcpu
);
1687 kmem_cache_free(kvm_vcpu_cache
, vcpu
);
1690 static int kvmppc_core_check_requests_hv(struct kvm_vcpu
*vcpu
)
1692 /* Indicate we want to get back into the guest */
1696 static void kvmppc_set_timer(struct kvm_vcpu
*vcpu
)
1698 unsigned long dec_nsec
, now
;
1701 if (now
> vcpu
->arch
.dec_expires
) {
1702 /* decrementer has already gone negative */
1703 kvmppc_core_queue_dec(vcpu
);
1704 kvmppc_core_prepare_to_enter(vcpu
);
1707 dec_nsec
= (vcpu
->arch
.dec_expires
- now
) * NSEC_PER_SEC
1709 hrtimer_start(&vcpu
->arch
.dec_timer
, ktime_set(0, dec_nsec
),
1711 vcpu
->arch
.timer_running
= 1;
1714 static void kvmppc_end_cede(struct kvm_vcpu
*vcpu
)
1716 vcpu
->arch
.ceded
= 0;
1717 if (vcpu
->arch
.timer_running
) {
1718 hrtimer_try_to_cancel(&vcpu
->arch
.dec_timer
);
1719 vcpu
->arch
.timer_running
= 0;
1723 extern void __kvmppc_vcore_entry(void);
1725 static void kvmppc_remove_runnable(struct kvmppc_vcore
*vc
,
1726 struct kvm_vcpu
*vcpu
)
1730 if (vcpu
->arch
.state
!= KVMPPC_VCPU_RUNNABLE
)
1732 spin_lock_irq(&vcpu
->arch
.tbacct_lock
);
1734 vcpu
->arch
.busy_stolen
+= vcore_stolen_time(vc
, now
) -
1735 vcpu
->arch
.stolen_logged
;
1736 vcpu
->arch
.busy_preempt
= now
;
1737 vcpu
->arch
.state
= KVMPPC_VCPU_BUSY_IN_HOST
;
1738 spin_unlock_irq(&vcpu
->arch
.tbacct_lock
);
1740 list_del(&vcpu
->arch
.run_list
);
1743 static int kvmppc_grab_hwthread(int cpu
)
1745 struct paca_struct
*tpaca
;
1746 long timeout
= 10000;
1750 /* Ensure the thread won't go into the kernel if it wakes */
1751 tpaca
->kvm_hstate
.kvm_vcpu
= NULL
;
1752 tpaca
->kvm_hstate
.napping
= 0;
1754 tpaca
->kvm_hstate
.hwthread_req
= 1;
1757 * If the thread is already executing in the kernel (e.g. handling
1758 * a stray interrupt), wait for it to get back to nap mode.
1759 * The smp_mb() is to ensure that our setting of hwthread_req
1760 * is visible before we look at hwthread_state, so if this
1761 * races with the code at system_reset_pSeries and the thread
1762 * misses our setting of hwthread_req, we are sure to see its
1763 * setting of hwthread_state, and vice versa.
1766 while (tpaca
->kvm_hstate
.hwthread_state
== KVM_HWTHREAD_IN_KERNEL
) {
1767 if (--timeout
<= 0) {
1768 pr_err("KVM: couldn't grab cpu %d\n", cpu
);
1776 static void kvmppc_release_hwthread(int cpu
)
1778 struct paca_struct
*tpaca
;
1781 tpaca
->kvm_hstate
.hwthread_req
= 0;
1782 tpaca
->kvm_hstate
.kvm_vcpu
= NULL
;
1785 static void kvmppc_start_thread(struct kvm_vcpu
*vcpu
)
1788 struct paca_struct
*tpaca
;
1789 struct kvmppc_vcore
*vc
= vcpu
->arch
.vcore
;
1791 if (vcpu
->arch
.timer_running
) {
1792 hrtimer_try_to_cancel(&vcpu
->arch
.dec_timer
);
1793 vcpu
->arch
.timer_running
= 0;
1795 cpu
= vc
->pcpu
+ vcpu
->arch
.ptid
;
1797 tpaca
->kvm_hstate
.kvm_vcore
= vc
;
1798 tpaca
->kvm_hstate
.ptid
= vcpu
->arch
.ptid
;
1799 vcpu
->cpu
= vc
->pcpu
;
1800 /* Order stores to hstate.kvm_vcore etc. before store to kvm_vcpu */
1802 tpaca
->kvm_hstate
.kvm_vcpu
= vcpu
;
1803 if (cpu
!= smp_processor_id())
1804 kvmppc_ipi_thread(cpu
);
1807 static void kvmppc_wait_for_nap(void)
1809 int cpu
= smp_processor_id();
1812 for (loops
= 0; loops
< 1000000; ++loops
) {
1814 * Check if all threads are finished.
1815 * We set the vcpu pointer when starting a thread
1816 * and the thread clears it when finished, so we look
1817 * for any threads that still have a non-NULL vcpu ptr.
1819 for (i
= 1; i
< threads_per_subcore
; ++i
)
1820 if (paca
[cpu
+ i
].kvm_hstate
.kvm_vcpu
)
1822 if (i
== threads_per_subcore
) {
1829 for (i
= 1; i
< threads_per_subcore
; ++i
)
1830 if (paca
[cpu
+ i
].kvm_hstate
.kvm_vcpu
)
1831 pr_err("KVM: CPU %d seems to be stuck\n", cpu
+ i
);
1835 * Check that we are on thread 0 and that any other threads in
1836 * this core are off-line. Then grab the threads so they can't
1839 static int on_primary_thread(void)
1841 int cpu
= smp_processor_id();
1844 /* Are we on a primary subcore? */
1845 if (cpu_thread_in_subcore(cpu
))
1849 while (++thr
< threads_per_subcore
)
1850 if (cpu_online(cpu
+ thr
))
1853 /* Grab all hw threads so they can't go into the kernel */
1854 for (thr
= 1; thr
< threads_per_subcore
; ++thr
) {
1855 if (kvmppc_grab_hwthread(cpu
+ thr
)) {
1856 /* Couldn't grab one; let the others go */
1858 kvmppc_release_hwthread(cpu
+ thr
);
1859 } while (--thr
> 0);
1866 static void kvmppc_start_saving_l2_cache(struct kvmppc_vcore
*vc
)
1868 phys_addr_t phy_addr
, mpp_addr
;
1870 phy_addr
= (phys_addr_t
)virt_to_phys(vc
->mpp_buffer
);
1871 mpp_addr
= phy_addr
& PPC_MPPE_ADDRESS_MASK
;
1873 mtspr(SPRN_MPPR
, mpp_addr
| PPC_MPPR_FETCH_ABORT
);
1874 logmpp(mpp_addr
| PPC_LOGMPP_LOG_L2
);
1876 vc
->mpp_buffer_is_valid
= true;
1879 static void kvmppc_start_restoring_l2_cache(const struct kvmppc_vcore
*vc
)
1881 phys_addr_t phy_addr
, mpp_addr
;
1883 phy_addr
= virt_to_phys(vc
->mpp_buffer
);
1884 mpp_addr
= phy_addr
& PPC_MPPE_ADDRESS_MASK
;
1886 /* We must abort any in-progress save operations to ensure
1887 * the table is valid so that prefetch engine knows when to
1888 * stop prefetching. */
1889 logmpp(mpp_addr
| PPC_LOGMPP_LOG_ABORT
);
1890 mtspr(SPRN_MPPR
, mpp_addr
| PPC_MPPR_FETCH_WHOLE_TABLE
);
1893 static void prepare_threads(struct kvmppc_vcore
*vc
)
1895 struct kvm_vcpu
*vcpu
, *vnext
;
1897 list_for_each_entry_safe(vcpu
, vnext
, &vc
->runnable_threads
,
1899 if (signal_pending(vcpu
->arch
.run_task
))
1900 vcpu
->arch
.ret
= -EINTR
;
1901 else if (vcpu
->arch
.vpa
.update_pending
||
1902 vcpu
->arch
.slb_shadow
.update_pending
||
1903 vcpu
->arch
.dtl
.update_pending
)
1904 vcpu
->arch
.ret
= RESUME_GUEST
;
1907 kvmppc_remove_runnable(vc
, vcpu
);
1908 wake_up(&vcpu
->arch
.cpu_run
);
1912 static void post_guest_process(struct kvmppc_vcore
*vc
)
1916 struct kvm_vcpu
*vcpu
, *vnext
;
1919 list_for_each_entry_safe(vcpu
, vnext
, &vc
->runnable_threads
,
1921 /* cancel pending dec exception if dec is positive */
1922 if (now
< vcpu
->arch
.dec_expires
&&
1923 kvmppc_core_pending_dec(vcpu
))
1924 kvmppc_core_dequeue_dec(vcpu
);
1926 trace_kvm_guest_exit(vcpu
);
1929 if (vcpu
->arch
.trap
)
1930 ret
= kvmppc_handle_exit_hv(vcpu
->arch
.kvm_run
, vcpu
,
1931 vcpu
->arch
.run_task
);
1933 vcpu
->arch
.ret
= ret
;
1934 vcpu
->arch
.trap
= 0;
1936 if (vcpu
->arch
.ceded
) {
1937 if (!is_kvmppc_resume_guest(ret
))
1938 kvmppc_end_cede(vcpu
);
1940 kvmppc_set_timer(vcpu
);
1942 if (!is_kvmppc_resume_guest(vcpu
->arch
.ret
)) {
1943 kvmppc_remove_runnable(vc
, vcpu
);
1944 wake_up(&vcpu
->arch
.cpu_run
);
1950 * Run a set of guest threads on a physical core.
1951 * Called with vc->lock held.
1953 static noinline
void kvmppc_run_core(struct kvmppc_vcore
*vc
)
1955 struct kvm_vcpu
*vcpu
, *vnext
;
1960 * Remove from the list any threads that have a signal pending
1961 * or need a VPA update done
1963 prepare_threads(vc
);
1965 /* if the runner is no longer runnable, let the caller pick a new one */
1966 if (vc
->runner
->arch
.state
!= KVMPPC_VCPU_RUNNABLE
)
1972 vc
->entry_exit_map
= 0;
1973 vc
->preempt_tb
= TB_NIL
;
1975 vc
->napping_threads
= 0;
1976 vc
->conferring_threads
= 0;
1979 * Make sure we are running on primary threads, and that secondary
1980 * threads are offline. Also check if the number of threads in this
1981 * guest are greater than the current system threads per guest.
1983 if ((threads_per_core
> 1) &&
1984 ((vc
->num_threads
> threads_per_subcore
) || !on_primary_thread())) {
1985 list_for_each_entry_safe(vcpu
, vnext
, &vc
->runnable_threads
,
1987 vcpu
->arch
.ret
= -EBUSY
;
1988 kvmppc_remove_runnable(vc
, vcpu
);
1989 wake_up(&vcpu
->arch
.cpu_run
);
1995 vc
->pcpu
= smp_processor_id();
1996 list_for_each_entry(vcpu
, &vc
->runnable_threads
, arch
.run_list
) {
1997 kvmppc_start_thread(vcpu
);
1998 kvmppc_create_dtl_entry(vcpu
, vc
);
1999 trace_kvm_guest_enter(vcpu
);
2002 /* Set this explicitly in case thread 0 doesn't have a vcpu */
2003 get_paca()->kvm_hstate
.kvm_vcore
= vc
;
2004 get_paca()->kvm_hstate
.ptid
= 0;
2006 vc
->vcore_state
= VCORE_RUNNING
;
2009 trace_kvmppc_run_core(vc
, 0);
2011 spin_unlock(&vc
->lock
);
2015 srcu_idx
= srcu_read_lock(&vc
->kvm
->srcu
);
2017 if (vc
->mpp_buffer_is_valid
)
2018 kvmppc_start_restoring_l2_cache(vc
);
2020 __kvmppc_vcore_entry();
2022 spin_lock(&vc
->lock
);
2025 kvmppc_start_saving_l2_cache(vc
);
2027 /* disable sending of IPIs on virtual external irqs */
2028 list_for_each_entry(vcpu
, &vc
->runnable_threads
, arch
.run_list
)
2030 /* wait for secondary threads to finish writing their state to memory */
2031 kvmppc_wait_for_nap();
2032 for (i
= 0; i
< threads_per_subcore
; ++i
)
2033 kvmppc_release_hwthread(vc
->pcpu
+ i
);
2034 /* prevent other vcpu threads from doing kvmppc_start_thread() now */
2035 vc
->vcore_state
= VCORE_EXITING
;
2036 spin_unlock(&vc
->lock
);
2038 srcu_read_unlock(&vc
->kvm
->srcu
, srcu_idx
);
2040 /* make sure updates to secondary vcpu structs are visible now */
2046 spin_lock(&vc
->lock
);
2047 post_guest_process(vc
);
2050 vc
->vcore_state
= VCORE_INACTIVE
;
2051 trace_kvmppc_run_core(vc
, 1);
2055 * Wait for some other vcpu thread to execute us, and
2056 * wake us up when we need to handle something in the host.
2058 static void kvmppc_wait_for_exec(struct kvm_vcpu
*vcpu
, int wait_state
)
2062 prepare_to_wait(&vcpu
->arch
.cpu_run
, &wait
, wait_state
);
2063 if (vcpu
->arch
.state
== KVMPPC_VCPU_RUNNABLE
)
2065 finish_wait(&vcpu
->arch
.cpu_run
, &wait
);
2069 * All the vcpus in this vcore are idle, so wait for a decrementer
2070 * or external interrupt to one of the vcpus. vc->lock is held.
2072 static void kvmppc_vcore_blocked(struct kvmppc_vcore
*vc
)
2074 struct kvm_vcpu
*vcpu
;
2079 prepare_to_wait(&vc
->wq
, &wait
, TASK_INTERRUPTIBLE
);
2082 * Check one last time for pending exceptions and ceded state after
2083 * we put ourselves on the wait queue
2085 list_for_each_entry(vcpu
, &vc
->runnable_threads
, arch
.run_list
) {
2086 if (vcpu
->arch
.pending_exceptions
|| !vcpu
->arch
.ceded
) {
2093 finish_wait(&vc
->wq
, &wait
);
2097 vc
->vcore_state
= VCORE_SLEEPING
;
2098 trace_kvmppc_vcore_blocked(vc
, 0);
2099 spin_unlock(&vc
->lock
);
2101 finish_wait(&vc
->wq
, &wait
);
2102 spin_lock(&vc
->lock
);
2103 vc
->vcore_state
= VCORE_INACTIVE
;
2104 trace_kvmppc_vcore_blocked(vc
, 1);
2107 static int kvmppc_run_vcpu(struct kvm_run
*kvm_run
, struct kvm_vcpu
*vcpu
)
2110 struct kvmppc_vcore
*vc
;
2111 struct kvm_vcpu
*v
, *vn
;
2113 trace_kvmppc_run_vcpu_enter(vcpu
);
2115 kvm_run
->exit_reason
= 0;
2116 vcpu
->arch
.ret
= RESUME_GUEST
;
2117 vcpu
->arch
.trap
= 0;
2118 kvmppc_update_vpas(vcpu
);
2121 * Synchronize with other threads in this virtual core
2123 vc
= vcpu
->arch
.vcore
;
2124 spin_lock(&vc
->lock
);
2125 vcpu
->arch
.ceded
= 0;
2126 vcpu
->arch
.run_task
= current
;
2127 vcpu
->arch
.kvm_run
= kvm_run
;
2128 vcpu
->arch
.stolen_logged
= vcore_stolen_time(vc
, mftb());
2129 vcpu
->arch
.state
= KVMPPC_VCPU_RUNNABLE
;
2130 vcpu
->arch
.busy_preempt
= TB_NIL
;
2131 list_add_tail(&vcpu
->arch
.run_list
, &vc
->runnable_threads
);
2135 * This happens the first time this is called for a vcpu.
2136 * If the vcore is already running, we may be able to start
2137 * this thread straight away and have it join in.
2139 if (!signal_pending(current
)) {
2140 if (vc
->vcore_state
== VCORE_RUNNING
&& !VCORE_IS_EXITING(vc
)) {
2141 kvmppc_create_dtl_entry(vcpu
, vc
);
2142 kvmppc_start_thread(vcpu
);
2143 trace_kvm_guest_enter(vcpu
);
2144 } else if (vc
->vcore_state
== VCORE_SLEEPING
) {
2150 while (vcpu
->arch
.state
== KVMPPC_VCPU_RUNNABLE
&&
2151 !signal_pending(current
)) {
2152 if (vc
->vcore_state
!= VCORE_INACTIVE
) {
2153 spin_unlock(&vc
->lock
);
2154 kvmppc_wait_for_exec(vcpu
, TASK_INTERRUPTIBLE
);
2155 spin_lock(&vc
->lock
);
2158 list_for_each_entry_safe(v
, vn
, &vc
->runnable_threads
,
2160 kvmppc_core_prepare_to_enter(v
);
2161 if (signal_pending(v
->arch
.run_task
)) {
2162 kvmppc_remove_runnable(vc
, v
);
2163 v
->stat
.signal_exits
++;
2164 v
->arch
.kvm_run
->exit_reason
= KVM_EXIT_INTR
;
2165 v
->arch
.ret
= -EINTR
;
2166 wake_up(&v
->arch
.cpu_run
);
2169 if (!vc
->n_runnable
|| vcpu
->arch
.state
!= KVMPPC_VCPU_RUNNABLE
)
2172 list_for_each_entry(v
, &vc
->runnable_threads
, arch
.run_list
) {
2173 if (!v
->arch
.pending_exceptions
)
2174 n_ceded
+= v
->arch
.ceded
;
2179 if (n_ceded
== vc
->n_runnable
) {
2180 kvmppc_vcore_blocked(vc
);
2181 } else if (need_resched()) {
2182 vc
->vcore_state
= VCORE_PREEMPT
;
2183 /* Let something else run */
2184 cond_resched_lock(&vc
->lock
);
2185 vc
->vcore_state
= VCORE_INACTIVE
;
2187 kvmppc_run_core(vc
);
2192 while (vcpu
->arch
.state
== KVMPPC_VCPU_RUNNABLE
&&
2193 (vc
->vcore_state
== VCORE_RUNNING
||
2194 vc
->vcore_state
== VCORE_EXITING
)) {
2195 spin_unlock(&vc
->lock
);
2196 kvmppc_wait_for_exec(vcpu
, TASK_UNINTERRUPTIBLE
);
2197 spin_lock(&vc
->lock
);
2200 if (vcpu
->arch
.state
== KVMPPC_VCPU_RUNNABLE
) {
2201 kvmppc_remove_runnable(vc
, vcpu
);
2202 vcpu
->stat
.signal_exits
++;
2203 kvm_run
->exit_reason
= KVM_EXIT_INTR
;
2204 vcpu
->arch
.ret
= -EINTR
;
2207 if (vc
->n_runnable
&& vc
->vcore_state
== VCORE_INACTIVE
) {
2208 /* Wake up some vcpu to run the core */
2209 v
= list_first_entry(&vc
->runnable_threads
,
2210 struct kvm_vcpu
, arch
.run_list
);
2211 wake_up(&v
->arch
.cpu_run
);
2214 trace_kvmppc_run_vcpu_exit(vcpu
, kvm_run
);
2215 spin_unlock(&vc
->lock
);
2216 return vcpu
->arch
.ret
;
2219 static int kvmppc_vcpu_run_hv(struct kvm_run
*run
, struct kvm_vcpu
*vcpu
)
2224 if (!vcpu
->arch
.sane
) {
2225 run
->exit_reason
= KVM_EXIT_INTERNAL_ERROR
;
2229 kvmppc_core_prepare_to_enter(vcpu
);
2231 /* No need to go into the guest when all we'll do is come back out */
2232 if (signal_pending(current
)) {
2233 run
->exit_reason
= KVM_EXIT_INTR
;
2237 atomic_inc(&vcpu
->kvm
->arch
.vcpus_running
);
2238 /* Order vcpus_running vs. hpte_setup_done, see kvmppc_alloc_reset_hpt */
2241 /* On the first time here, set up HTAB and VRMA */
2242 if (!vcpu
->kvm
->arch
.hpte_setup_done
) {
2243 r
= kvmppc_hv_setup_htab_rma(vcpu
);
2248 flush_fp_to_thread(current
);
2249 flush_altivec_to_thread(current
);
2250 flush_vsx_to_thread(current
);
2251 vcpu
->arch
.wqp
= &vcpu
->arch
.vcore
->wq
;
2252 vcpu
->arch
.pgdir
= current
->mm
->pgd
;
2253 vcpu
->arch
.state
= KVMPPC_VCPU_BUSY_IN_HOST
;
2256 r
= kvmppc_run_vcpu(run
, vcpu
);
2258 if (run
->exit_reason
== KVM_EXIT_PAPR_HCALL
&&
2259 !(vcpu
->arch
.shregs
.msr
& MSR_PR
)) {
2260 trace_kvm_hcall_enter(vcpu
);
2261 r
= kvmppc_pseries_do_hcall(vcpu
);
2262 trace_kvm_hcall_exit(vcpu
, r
);
2263 kvmppc_core_prepare_to_enter(vcpu
);
2264 } else if (r
== RESUME_PAGE_FAULT
) {
2265 srcu_idx
= srcu_read_lock(&vcpu
->kvm
->srcu
);
2266 r
= kvmppc_book3s_hv_page_fault(run
, vcpu
,
2267 vcpu
->arch
.fault_dar
, vcpu
->arch
.fault_dsisr
);
2268 srcu_read_unlock(&vcpu
->kvm
->srcu
, srcu_idx
);
2270 } while (is_kvmppc_resume_guest(r
));
2273 vcpu
->arch
.state
= KVMPPC_VCPU_NOTREADY
;
2274 atomic_dec(&vcpu
->kvm
->arch
.vcpus_running
);
2278 static void kvmppc_add_seg_page_size(struct kvm_ppc_one_seg_page_size
**sps
,
2281 struct mmu_psize_def
*def
= &mmu_psize_defs
[linux_psize
];
2285 (*sps
)->page_shift
= def
->shift
;
2286 (*sps
)->slb_enc
= def
->sllp
;
2287 (*sps
)->enc
[0].page_shift
= def
->shift
;
2288 (*sps
)->enc
[0].pte_enc
= def
->penc
[linux_psize
];
2290 * Add 16MB MPSS support if host supports it
2292 if (linux_psize
!= MMU_PAGE_16M
&& def
->penc
[MMU_PAGE_16M
] != -1) {
2293 (*sps
)->enc
[1].page_shift
= 24;
2294 (*sps
)->enc
[1].pte_enc
= def
->penc
[MMU_PAGE_16M
];
2299 static int kvm_vm_ioctl_get_smmu_info_hv(struct kvm
*kvm
,
2300 struct kvm_ppc_smmu_info
*info
)
2302 struct kvm_ppc_one_seg_page_size
*sps
;
2304 info
->flags
= KVM_PPC_PAGE_SIZES_REAL
;
2305 if (mmu_has_feature(MMU_FTR_1T_SEGMENT
))
2306 info
->flags
|= KVM_PPC_1T_SEGMENTS
;
2307 info
->slb_size
= mmu_slb_size
;
2309 /* We only support these sizes for now, and no muti-size segments */
2310 sps
= &info
->sps
[0];
2311 kvmppc_add_seg_page_size(&sps
, MMU_PAGE_4K
);
2312 kvmppc_add_seg_page_size(&sps
, MMU_PAGE_64K
);
2313 kvmppc_add_seg_page_size(&sps
, MMU_PAGE_16M
);
2319 * Get (and clear) the dirty memory log for a memory slot.
2321 static int kvm_vm_ioctl_get_dirty_log_hv(struct kvm
*kvm
,
2322 struct kvm_dirty_log
*log
)
2324 struct kvm_memslots
*slots
;
2325 struct kvm_memory_slot
*memslot
;
2329 mutex_lock(&kvm
->slots_lock
);
2332 if (log
->slot
>= KVM_USER_MEM_SLOTS
)
2335 slots
= kvm_memslots(kvm
);
2336 memslot
= id_to_memslot(slots
, log
->slot
);
2338 if (!memslot
->dirty_bitmap
)
2341 n
= kvm_dirty_bitmap_bytes(memslot
);
2342 memset(memslot
->dirty_bitmap
, 0, n
);
2344 r
= kvmppc_hv_get_dirty_log(kvm
, memslot
, memslot
->dirty_bitmap
);
2349 if (copy_to_user(log
->dirty_bitmap
, memslot
->dirty_bitmap
, n
))
2354 mutex_unlock(&kvm
->slots_lock
);
2358 static void kvmppc_core_free_memslot_hv(struct kvm_memory_slot
*free
,
2359 struct kvm_memory_slot
*dont
)
2361 if (!dont
|| free
->arch
.rmap
!= dont
->arch
.rmap
) {
2362 vfree(free
->arch
.rmap
);
2363 free
->arch
.rmap
= NULL
;
2367 static int kvmppc_core_create_memslot_hv(struct kvm_memory_slot
*slot
,
2368 unsigned long npages
)
2370 slot
->arch
.rmap
= vzalloc(npages
* sizeof(*slot
->arch
.rmap
));
2371 if (!slot
->arch
.rmap
)
2377 static int kvmppc_core_prepare_memory_region_hv(struct kvm
*kvm
,
2378 struct kvm_memory_slot
*memslot
,
2379 const struct kvm_userspace_memory_region
*mem
)
2384 static void kvmppc_core_commit_memory_region_hv(struct kvm
*kvm
,
2385 const struct kvm_userspace_memory_region
*mem
,
2386 const struct kvm_memory_slot
*old
,
2387 const struct kvm_memory_slot
*new)
2389 unsigned long npages
= mem
->memory_size
>> PAGE_SHIFT
;
2390 struct kvm_memslots
*slots
;
2391 struct kvm_memory_slot
*memslot
;
2393 if (npages
&& old
->npages
) {
2395 * If modifying a memslot, reset all the rmap dirty bits.
2396 * If this is a new memslot, we don't need to do anything
2397 * since the rmap array starts out as all zeroes,
2398 * i.e. no pages are dirty.
2400 slots
= kvm_memslots(kvm
);
2401 memslot
= id_to_memslot(slots
, mem
->slot
);
2402 kvmppc_hv_get_dirty_log(kvm
, memslot
, NULL
);
2407 * Update LPCR values in kvm->arch and in vcores.
2408 * Caller must hold kvm->lock.
2410 void kvmppc_update_lpcr(struct kvm
*kvm
, unsigned long lpcr
, unsigned long mask
)
2415 if ((kvm
->arch
.lpcr
& mask
) == lpcr
)
2418 kvm
->arch
.lpcr
= (kvm
->arch
.lpcr
& ~mask
) | lpcr
;
2420 for (i
= 0; i
< KVM_MAX_VCORES
; ++i
) {
2421 struct kvmppc_vcore
*vc
= kvm
->arch
.vcores
[i
];
2424 spin_lock(&vc
->lock
);
2425 vc
->lpcr
= (vc
->lpcr
& ~mask
) | lpcr
;
2426 spin_unlock(&vc
->lock
);
2427 if (++cores_done
>= kvm
->arch
.online_vcores
)
2432 static void kvmppc_mmu_destroy_hv(struct kvm_vcpu
*vcpu
)
2437 static int kvmppc_hv_setup_htab_rma(struct kvm_vcpu
*vcpu
)
2440 struct kvm
*kvm
= vcpu
->kvm
;
2442 struct kvm_memory_slot
*memslot
;
2443 struct vm_area_struct
*vma
;
2444 unsigned long lpcr
= 0, senc
;
2445 unsigned long psize
, porder
;
2448 mutex_lock(&kvm
->lock
);
2449 if (kvm
->arch
.hpte_setup_done
)
2450 goto out
; /* another vcpu beat us to it */
2452 /* Allocate hashed page table (if not done already) and reset it */
2453 if (!kvm
->arch
.hpt_virt
) {
2454 err
= kvmppc_alloc_hpt(kvm
, NULL
);
2456 pr_err("KVM: Couldn't alloc HPT\n");
2461 /* Look up the memslot for guest physical address 0 */
2462 srcu_idx
= srcu_read_lock(&kvm
->srcu
);
2463 memslot
= gfn_to_memslot(kvm
, 0);
2465 /* We must have some memory at 0 by now */
2467 if (!memslot
|| (memslot
->flags
& KVM_MEMSLOT_INVALID
))
2470 /* Look up the VMA for the start of this memory slot */
2471 hva
= memslot
->userspace_addr
;
2472 down_read(¤t
->mm
->mmap_sem
);
2473 vma
= find_vma(current
->mm
, hva
);
2474 if (!vma
|| vma
->vm_start
> hva
|| (vma
->vm_flags
& VM_IO
))
2477 psize
= vma_kernel_pagesize(vma
);
2478 porder
= __ilog2(psize
);
2480 up_read(¤t
->mm
->mmap_sem
);
2482 /* We can handle 4k, 64k or 16M pages in the VRMA */
2484 if (!(psize
== 0x1000 || psize
== 0x10000 ||
2485 psize
== 0x1000000))
2488 /* Update VRMASD field in the LPCR */
2489 senc
= slb_pgsize_encoding(psize
);
2490 kvm
->arch
.vrma_slb_v
= senc
| SLB_VSID_B_1T
|
2491 (VRMA_VSID
<< SLB_VSID_SHIFT_1T
);
2492 /* the -4 is to account for senc values starting at 0x10 */
2493 lpcr
= senc
<< (LPCR_VRMASD_SH
- 4);
2495 /* Create HPTEs in the hash page table for the VRMA */
2496 kvmppc_map_vrma(vcpu
, memslot
, porder
);
2498 kvmppc_update_lpcr(kvm
, lpcr
, LPCR_VRMASD
);
2500 /* Order updates to kvm->arch.lpcr etc. vs. hpte_setup_done */
2502 kvm
->arch
.hpte_setup_done
= 1;
2505 srcu_read_unlock(&kvm
->srcu
, srcu_idx
);
2507 mutex_unlock(&kvm
->lock
);
2511 up_read(¤t
->mm
->mmap_sem
);
2515 static int kvmppc_core_init_vm_hv(struct kvm
*kvm
)
2517 unsigned long lpcr
, lpid
;
2520 /* Allocate the guest's logical partition ID */
2522 lpid
= kvmppc_alloc_lpid();
2525 kvm
->arch
.lpid
= lpid
;
2528 * Since we don't flush the TLB when tearing down a VM,
2529 * and this lpid might have previously been used,
2530 * make sure we flush on each core before running the new VM.
2532 cpumask_setall(&kvm
->arch
.need_tlb_flush
);
2534 /* Start out with the default set of hcalls enabled */
2535 memcpy(kvm
->arch
.enabled_hcalls
, default_enabled_hcalls
,
2536 sizeof(kvm
->arch
.enabled_hcalls
));
2538 kvm
->arch
.host_sdr1
= mfspr(SPRN_SDR1
);
2540 /* Init LPCR for virtual RMA mode */
2541 kvm
->arch
.host_lpid
= mfspr(SPRN_LPID
);
2542 kvm
->arch
.host_lpcr
= lpcr
= mfspr(SPRN_LPCR
);
2543 lpcr
&= LPCR_PECE
| LPCR_LPES
;
2544 lpcr
|= (4UL << LPCR_DPFD_SH
) | LPCR_HDICE
|
2545 LPCR_VPM0
| LPCR_VPM1
;
2546 kvm
->arch
.vrma_slb_v
= SLB_VSID_B_1T
|
2547 (VRMA_VSID
<< SLB_VSID_SHIFT_1T
);
2548 /* On POWER8 turn on online bit to enable PURR/SPURR */
2549 if (cpu_has_feature(CPU_FTR_ARCH_207S
))
2551 kvm
->arch
.lpcr
= lpcr
;
2554 * Track that we now have a HV mode VM active. This blocks secondary
2555 * CPU threads from coming online.
2557 kvm_hv_vm_activated();
2560 * Create a debugfs directory for the VM
2562 snprintf(buf
, sizeof(buf
), "vm%d", current
->pid
);
2563 kvm
->arch
.debugfs_dir
= debugfs_create_dir(buf
, kvm_debugfs_dir
);
2564 if (!IS_ERR_OR_NULL(kvm
->arch
.debugfs_dir
))
2565 kvmppc_mmu_debugfs_init(kvm
);
2570 static void kvmppc_free_vcores(struct kvm
*kvm
)
2574 for (i
= 0; i
< KVM_MAX_VCORES
; ++i
) {
2575 if (kvm
->arch
.vcores
[i
] && kvm
->arch
.vcores
[i
]->mpp_buffer
) {
2576 struct kvmppc_vcore
*vc
= kvm
->arch
.vcores
[i
];
2577 free_pages((unsigned long)vc
->mpp_buffer
,
2580 kfree(kvm
->arch
.vcores
[i
]);
2582 kvm
->arch
.online_vcores
= 0;
2585 static void kvmppc_core_destroy_vm_hv(struct kvm
*kvm
)
2587 debugfs_remove_recursive(kvm
->arch
.debugfs_dir
);
2589 kvm_hv_vm_deactivated();
2591 kvmppc_free_vcores(kvm
);
2593 kvmppc_free_hpt(kvm
);
2596 /* We don't need to emulate any privileged instructions or dcbz */
2597 static int kvmppc_core_emulate_op_hv(struct kvm_run
*run
, struct kvm_vcpu
*vcpu
,
2598 unsigned int inst
, int *advance
)
2600 return EMULATE_FAIL
;
2603 static int kvmppc_core_emulate_mtspr_hv(struct kvm_vcpu
*vcpu
, int sprn
,
2606 return EMULATE_FAIL
;
2609 static int kvmppc_core_emulate_mfspr_hv(struct kvm_vcpu
*vcpu
, int sprn
,
2612 return EMULATE_FAIL
;
2615 static int kvmppc_core_check_processor_compat_hv(void)
2617 if (!cpu_has_feature(CPU_FTR_HVMODE
) ||
2618 !cpu_has_feature(CPU_FTR_ARCH_206
))
2623 static long kvm_arch_vm_ioctl_hv(struct file
*filp
,
2624 unsigned int ioctl
, unsigned long arg
)
2626 struct kvm
*kvm __maybe_unused
= filp
->private_data
;
2627 void __user
*argp
= (void __user
*)arg
;
2632 case KVM_PPC_ALLOCATE_HTAB
: {
2636 if (get_user(htab_order
, (u32 __user
*)argp
))
2638 r
= kvmppc_alloc_reset_hpt(kvm
, &htab_order
);
2642 if (put_user(htab_order
, (u32 __user
*)argp
))
2648 case KVM_PPC_GET_HTAB_FD
: {
2649 struct kvm_get_htab_fd ghf
;
2652 if (copy_from_user(&ghf
, argp
, sizeof(ghf
)))
2654 r
= kvm_vm_ioctl_get_htab_fd(kvm
, &ghf
);
2666 * List of hcall numbers to enable by default.
2667 * For compatibility with old userspace, we enable by default
2668 * all hcalls that were implemented before the hcall-enabling
2669 * facility was added. Note this list should not include H_RTAS.
2671 static unsigned int default_hcall_list
[] = {
2685 #ifdef CONFIG_KVM_XICS
2696 static void init_default_hcalls(void)
2701 for (i
= 0; default_hcall_list
[i
]; ++i
) {
2702 hcall
= default_hcall_list
[i
];
2703 WARN_ON(!kvmppc_hcall_impl_hv(hcall
));
2704 __set_bit(hcall
/ 4, default_enabled_hcalls
);
2708 static struct kvmppc_ops kvm_ops_hv
= {
2709 .get_sregs
= kvm_arch_vcpu_ioctl_get_sregs_hv
,
2710 .set_sregs
= kvm_arch_vcpu_ioctl_set_sregs_hv
,
2711 .get_one_reg
= kvmppc_get_one_reg_hv
,
2712 .set_one_reg
= kvmppc_set_one_reg_hv
,
2713 .vcpu_load
= kvmppc_core_vcpu_load_hv
,
2714 .vcpu_put
= kvmppc_core_vcpu_put_hv
,
2715 .set_msr
= kvmppc_set_msr_hv
,
2716 .vcpu_run
= kvmppc_vcpu_run_hv
,
2717 .vcpu_create
= kvmppc_core_vcpu_create_hv
,
2718 .vcpu_free
= kvmppc_core_vcpu_free_hv
,
2719 .check_requests
= kvmppc_core_check_requests_hv
,
2720 .get_dirty_log
= kvm_vm_ioctl_get_dirty_log_hv
,
2721 .flush_memslot
= kvmppc_core_flush_memslot_hv
,
2722 .prepare_memory_region
= kvmppc_core_prepare_memory_region_hv
,
2723 .commit_memory_region
= kvmppc_core_commit_memory_region_hv
,
2724 .unmap_hva
= kvm_unmap_hva_hv
,
2725 .unmap_hva_range
= kvm_unmap_hva_range_hv
,
2726 .age_hva
= kvm_age_hva_hv
,
2727 .test_age_hva
= kvm_test_age_hva_hv
,
2728 .set_spte_hva
= kvm_set_spte_hva_hv
,
2729 .mmu_destroy
= kvmppc_mmu_destroy_hv
,
2730 .free_memslot
= kvmppc_core_free_memslot_hv
,
2731 .create_memslot
= kvmppc_core_create_memslot_hv
,
2732 .init_vm
= kvmppc_core_init_vm_hv
,
2733 .destroy_vm
= kvmppc_core_destroy_vm_hv
,
2734 .get_smmu_info
= kvm_vm_ioctl_get_smmu_info_hv
,
2735 .emulate_op
= kvmppc_core_emulate_op_hv
,
2736 .emulate_mtspr
= kvmppc_core_emulate_mtspr_hv
,
2737 .emulate_mfspr
= kvmppc_core_emulate_mfspr_hv
,
2738 .fast_vcpu_kick
= kvmppc_fast_vcpu_kick_hv
,
2739 .arch_vm_ioctl
= kvm_arch_vm_ioctl_hv
,
2740 .hcall_implemented
= kvmppc_hcall_impl_hv
,
2743 static int kvmppc_book3s_init_hv(void)
2747 * FIXME!! Do we need to check on all cpus ?
2749 r
= kvmppc_core_check_processor_compat_hv();
2753 kvm_ops_hv
.owner
= THIS_MODULE
;
2754 kvmppc_hv_ops
= &kvm_ops_hv
;
2756 init_default_hcalls();
2758 r
= kvmppc_mmu_hv_init();
2762 static void kvmppc_book3s_exit_hv(void)
2764 kvmppc_hv_ops
= NULL
;
2767 module_init(kvmppc_book3s_init_hv
);
2768 module_exit(kvmppc_book3s_exit_hv
);
2769 MODULE_LICENSE("GPL");
2770 MODULE_ALIAS_MISCDEV(KVM_MINOR
);
2771 MODULE_ALIAS("devname:kvm");