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
17 * Authors: Hollis Blanchard <hollisb@us.ibm.com>
18 * Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
21 #include <linux/errno.h>
22 #include <linux/err.h>
23 #include <linux/kvm_host.h>
24 #include <linux/vmalloc.h>
25 #include <linux/hrtimer.h>
26 #include <linux/sched/signal.h>
28 #include <linux/slab.h>
29 #include <linux/file.h>
30 #include <linux/module.h>
31 #include <linux/irqbypass.h>
32 #include <linux/kvm_irqfd.h>
33 #include <asm/cputable.h>
34 #include <linux/uaccess.h>
35 #include <asm/kvm_ppc.h>
36 #include <asm/tlbflush.h>
37 #include <asm/cputhreads.h>
38 #include <asm/irqflags.h>
39 #include <asm/iommu.h>
40 #include <asm/switch_to.h>
43 #include "../mm/mmu_decl.h"
45 #define CREATE_TRACE_POINTS
48 struct kvmppc_ops
*kvmppc_hv_ops
;
49 EXPORT_SYMBOL_GPL(kvmppc_hv_ops
);
50 struct kvmppc_ops
*kvmppc_pr_ops
;
51 EXPORT_SYMBOL_GPL(kvmppc_pr_ops
);
54 int kvm_arch_vcpu_runnable(struct kvm_vcpu
*v
)
56 return !!(v
->arch
.pending_exceptions
) ||
60 int kvm_arch_vcpu_should_kick(struct kvm_vcpu
*vcpu
)
66 * Common checks before entering the guest world. Call with interrupts
71 * == 1 if we're ready to go into guest state
72 * <= 0 if we need to go back to the host with return value
74 int kvmppc_prepare_to_enter(struct kvm_vcpu
*vcpu
)
78 WARN_ON(irqs_disabled());
89 if (signal_pending(current
)) {
90 kvmppc_account_exit(vcpu
, SIGNAL_EXITS
);
91 vcpu
->run
->exit_reason
= KVM_EXIT_INTR
;
96 vcpu
->mode
= IN_GUEST_MODE
;
99 * Reading vcpu->requests must happen after setting vcpu->mode,
100 * so we don't miss a request because the requester sees
101 * OUTSIDE_GUEST_MODE and assumes we'll be checking requests
102 * before next entering the guest (and thus doesn't IPI).
103 * This also orders the write to mode from any reads
104 * to the page tables done while the VCPU is running.
105 * Please see the comment in kvm_flush_remote_tlbs.
109 if (vcpu
->requests
) {
110 /* Make sure we process requests preemptable */
112 trace_kvm_check_requests(vcpu
);
113 r
= kvmppc_core_check_requests(vcpu
);
120 if (kvmppc_core_prepare_to_enter(vcpu
)) {
121 /* interrupts got enabled in between, so we
122 are back at square 1 */
126 guest_enter_irqoff();
134 EXPORT_SYMBOL_GPL(kvmppc_prepare_to_enter
);
136 #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE)
137 static void kvmppc_swab_shared(struct kvm_vcpu
*vcpu
)
139 struct kvm_vcpu_arch_shared
*shared
= vcpu
->arch
.shared
;
142 shared
->sprg0
= swab64(shared
->sprg0
);
143 shared
->sprg1
= swab64(shared
->sprg1
);
144 shared
->sprg2
= swab64(shared
->sprg2
);
145 shared
->sprg3
= swab64(shared
->sprg3
);
146 shared
->srr0
= swab64(shared
->srr0
);
147 shared
->srr1
= swab64(shared
->srr1
);
148 shared
->dar
= swab64(shared
->dar
);
149 shared
->msr
= swab64(shared
->msr
);
150 shared
->dsisr
= swab32(shared
->dsisr
);
151 shared
->int_pending
= swab32(shared
->int_pending
);
152 for (i
= 0; i
< ARRAY_SIZE(shared
->sr
); i
++)
153 shared
->sr
[i
] = swab32(shared
->sr
[i
]);
157 int kvmppc_kvm_pv(struct kvm_vcpu
*vcpu
)
159 int nr
= kvmppc_get_gpr(vcpu
, 11);
161 unsigned long __maybe_unused param1
= kvmppc_get_gpr(vcpu
, 3);
162 unsigned long __maybe_unused param2
= kvmppc_get_gpr(vcpu
, 4);
163 unsigned long __maybe_unused param3
= kvmppc_get_gpr(vcpu
, 5);
164 unsigned long __maybe_unused param4
= kvmppc_get_gpr(vcpu
, 6);
165 unsigned long r2
= 0;
167 if (!(kvmppc_get_msr(vcpu
) & MSR_SF
)) {
169 param1
&= 0xffffffff;
170 param2
&= 0xffffffff;
171 param3
&= 0xffffffff;
172 param4
&= 0xffffffff;
176 case KVM_HCALL_TOKEN(KVM_HC_PPC_MAP_MAGIC_PAGE
):
178 #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE)
179 /* Book3S can be little endian, find it out here */
180 int shared_big_endian
= true;
181 if (vcpu
->arch
.intr_msr
& MSR_LE
)
182 shared_big_endian
= false;
183 if (shared_big_endian
!= vcpu
->arch
.shared_big_endian
)
184 kvmppc_swab_shared(vcpu
);
185 vcpu
->arch
.shared_big_endian
= shared_big_endian
;
188 if (!(param2
& MAGIC_PAGE_FLAG_NOT_MAPPED_NX
)) {
190 * Older versions of the Linux magic page code had
191 * a bug where they would map their trampoline code
192 * NX. If that's the case, remove !PR NX capability.
194 vcpu
->arch
.disable_kernel_nx
= true;
195 kvm_make_request(KVM_REQ_TLB_FLUSH
, vcpu
);
198 vcpu
->arch
.magic_page_pa
= param1
& ~0xfffULL
;
199 vcpu
->arch
.magic_page_ea
= param2
& ~0xfffULL
;
201 #ifdef CONFIG_PPC_64K_PAGES
203 * Make sure our 4k magic page is in the same window of a 64k
204 * page within the guest and within the host's page.
206 if ((vcpu
->arch
.magic_page_pa
& 0xf000) !=
207 ((ulong
)vcpu
->arch
.shared
& 0xf000)) {
208 void *old_shared
= vcpu
->arch
.shared
;
209 ulong shared
= (ulong
)vcpu
->arch
.shared
;
213 shared
|= vcpu
->arch
.magic_page_pa
& 0xf000;
214 new_shared
= (void*)shared
;
215 memcpy(new_shared
, old_shared
, 0x1000);
216 vcpu
->arch
.shared
= new_shared
;
220 r2
= KVM_MAGIC_FEAT_SR
| KVM_MAGIC_FEAT_MAS0_TO_SPRG7
;
225 case KVM_HCALL_TOKEN(KVM_HC_FEATURES
):
227 #if defined(CONFIG_PPC_BOOK3S) || defined(CONFIG_KVM_E500V2)
228 r2
|= (1 << KVM_FEATURE_MAGIC_PAGE
);
231 /* Second return value is in r4 */
233 case EV_HCALL_TOKEN(EV_IDLE
):
235 kvm_vcpu_block(vcpu
);
236 kvm_clear_request(KVM_REQ_UNHALT
, vcpu
);
239 r
= EV_UNIMPLEMENTED
;
243 kvmppc_set_gpr(vcpu
, 4, r2
);
247 EXPORT_SYMBOL_GPL(kvmppc_kvm_pv
);
249 int kvmppc_sanity_check(struct kvm_vcpu
*vcpu
)
253 /* We have to know what CPU to virtualize */
257 /* PAPR only works with book3s_64 */
258 if ((vcpu
->arch
.cpu_type
!= KVM_CPU_3S_64
) && vcpu
->arch
.papr_enabled
)
261 /* HV KVM can only do PAPR mode for now */
262 if (!vcpu
->arch
.papr_enabled
&& is_kvmppc_hv_enabled(vcpu
->kvm
))
265 #ifdef CONFIG_KVM_BOOKE_HV
266 if (!cpu_has_feature(CPU_FTR_EMB_HV
))
274 return r
? 0 : -EINVAL
;
276 EXPORT_SYMBOL_GPL(kvmppc_sanity_check
);
278 int kvmppc_emulate_mmio(struct kvm_run
*run
, struct kvm_vcpu
*vcpu
)
280 enum emulation_result er
;
283 er
= kvmppc_emulate_loadstore(vcpu
);
286 /* Future optimization: only reload non-volatiles if they were
287 * actually modified. */
293 case EMULATE_DO_MMIO
:
294 run
->exit_reason
= KVM_EXIT_MMIO
;
295 /* We must reload nonvolatiles because "update" load/store
296 * instructions modify register state. */
297 /* Future optimization: only reload non-volatiles if they were
298 * actually modified. */
305 kvmppc_get_last_inst(vcpu
, INST_GENERIC
, &last_inst
);
306 /* XXX Deliver Program interrupt to guest. */
307 pr_emerg("%s: emulation failed (%08x)\n", __func__
, last_inst
);
318 EXPORT_SYMBOL_GPL(kvmppc_emulate_mmio
);
320 int kvmppc_st(struct kvm_vcpu
*vcpu
, ulong
*eaddr
, int size
, void *ptr
,
323 ulong mp_pa
= vcpu
->arch
.magic_page_pa
& KVM_PAM
& PAGE_MASK
;
324 struct kvmppc_pte pte
;
329 r
= kvmppc_xlate(vcpu
, *eaddr
, data
? XLATE_DATA
: XLATE_INST
,
339 /* Magic page override */
340 if (kvmppc_supports_magic_page(vcpu
) && mp_pa
&&
341 ((pte
.raddr
& KVM_PAM
& PAGE_MASK
) == mp_pa
) &&
342 !(kvmppc_get_msr(vcpu
) & MSR_PR
)) {
343 void *magic
= vcpu
->arch
.shared
;
344 magic
+= pte
.eaddr
& 0xfff;
345 memcpy(magic
, ptr
, size
);
349 if (kvm_write_guest(vcpu
->kvm
, pte
.raddr
, ptr
, size
))
350 return EMULATE_DO_MMIO
;
354 EXPORT_SYMBOL_GPL(kvmppc_st
);
356 int kvmppc_ld(struct kvm_vcpu
*vcpu
, ulong
*eaddr
, int size
, void *ptr
,
359 ulong mp_pa
= vcpu
->arch
.magic_page_pa
& KVM_PAM
& PAGE_MASK
;
360 struct kvmppc_pte pte
;
365 rc
= kvmppc_xlate(vcpu
, *eaddr
, data
? XLATE_DATA
: XLATE_INST
,
375 if (!data
&& !pte
.may_execute
)
378 /* Magic page override */
379 if (kvmppc_supports_magic_page(vcpu
) && mp_pa
&&
380 ((pte
.raddr
& KVM_PAM
& PAGE_MASK
) == mp_pa
) &&
381 !(kvmppc_get_msr(vcpu
) & MSR_PR
)) {
382 void *magic
= vcpu
->arch
.shared
;
383 magic
+= pte
.eaddr
& 0xfff;
384 memcpy(ptr
, magic
, size
);
388 if (kvm_read_guest(vcpu
->kvm
, pte
.raddr
, ptr
, size
))
389 return EMULATE_DO_MMIO
;
393 EXPORT_SYMBOL_GPL(kvmppc_ld
);
395 int kvm_arch_hardware_enable(void)
400 int kvm_arch_hardware_setup(void)
405 void kvm_arch_check_processor_compat(void *rtn
)
407 *(int *)rtn
= kvmppc_core_check_processor_compat();
410 int kvm_arch_init_vm(struct kvm
*kvm
, unsigned long type
)
412 struct kvmppc_ops
*kvm_ops
= NULL
;
414 * if we have both HV and PR enabled, default is HV
418 kvm_ops
= kvmppc_hv_ops
;
420 kvm_ops
= kvmppc_pr_ops
;
423 } else if (type
== KVM_VM_PPC_HV
) {
426 kvm_ops
= kvmppc_hv_ops
;
427 } else if (type
== KVM_VM_PPC_PR
) {
430 kvm_ops
= kvmppc_pr_ops
;
434 if (kvm_ops
->owner
&& !try_module_get(kvm_ops
->owner
))
437 kvm
->arch
.kvm_ops
= kvm_ops
;
438 return kvmppc_core_init_vm(kvm
);
443 bool kvm_arch_has_vcpu_debugfs(void)
448 int kvm_arch_create_vcpu_debugfs(struct kvm_vcpu
*vcpu
)
453 void kvm_arch_destroy_vm(struct kvm
*kvm
)
456 struct kvm_vcpu
*vcpu
;
458 #ifdef CONFIG_KVM_XICS
460 * We call kick_all_cpus_sync() to ensure that all
461 * CPUs have executed any pending IPIs before we
462 * continue and free VCPUs structures below.
464 if (is_kvmppc_hv_enabled(kvm
))
465 kick_all_cpus_sync();
468 kvm_for_each_vcpu(i
, vcpu
, kvm
)
469 kvm_arch_vcpu_free(vcpu
);
471 mutex_lock(&kvm
->lock
);
472 for (i
= 0; i
< atomic_read(&kvm
->online_vcpus
); i
++)
473 kvm
->vcpus
[i
] = NULL
;
475 atomic_set(&kvm
->online_vcpus
, 0);
477 kvmppc_core_destroy_vm(kvm
);
479 mutex_unlock(&kvm
->lock
);
481 /* drop the module reference */
482 module_put(kvm
->arch
.kvm_ops
->owner
);
485 int kvm_vm_ioctl_check_extension(struct kvm
*kvm
, long ext
)
488 /* Assume we're using HV mode when the HV module is loaded */
489 int hv_enabled
= kvmppc_hv_ops
? 1 : 0;
493 * Hooray - we know which VM type we're running on. Depend on
494 * that rather than the guess above.
496 hv_enabled
= is_kvmppc_hv_enabled(kvm
);
501 case KVM_CAP_PPC_BOOKE_SREGS
:
502 case KVM_CAP_PPC_BOOKE_WATCHDOG
:
503 case KVM_CAP_PPC_EPR
:
505 case KVM_CAP_PPC_SEGSTATE
:
506 case KVM_CAP_PPC_HIOR
:
507 case KVM_CAP_PPC_PAPR
:
509 case KVM_CAP_PPC_UNSET_IRQ
:
510 case KVM_CAP_PPC_IRQ_LEVEL
:
511 case KVM_CAP_ENABLE_CAP
:
512 case KVM_CAP_ENABLE_CAP_VM
:
513 case KVM_CAP_ONE_REG
:
514 case KVM_CAP_IOEVENTFD
:
515 case KVM_CAP_DEVICE_CTRL
:
516 case KVM_CAP_IMMEDIATE_EXIT
:
519 case KVM_CAP_PPC_PAIRED_SINGLES
:
520 case KVM_CAP_PPC_OSI
:
521 case KVM_CAP_PPC_GET_PVINFO
:
522 #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC)
525 /* We support this only for PR */
528 #ifdef CONFIG_KVM_MPIC
529 case KVM_CAP_IRQ_MPIC
:
534 #ifdef CONFIG_PPC_BOOK3S_64
535 case KVM_CAP_SPAPR_TCE
:
536 case KVM_CAP_SPAPR_TCE_64
:
538 case KVM_CAP_SPAPR_TCE_VFIO
:
539 case KVM_CAP_PPC_RTAS
:
540 case KVM_CAP_PPC_FIXUP_HCALL
:
541 case KVM_CAP_PPC_ENABLE_HCALL
:
542 #ifdef CONFIG_KVM_XICS
543 case KVM_CAP_IRQ_XICS
:
548 case KVM_CAP_PPC_ALLOC_HTAB
:
551 #endif /* CONFIG_PPC_BOOK3S_64 */
552 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
553 case KVM_CAP_PPC_SMT
:
556 if (cpu_has_feature(CPU_FTR_ARCH_300
))
559 r
= threads_per_subcore
;
562 case KVM_CAP_PPC_RMA
:
565 case KVM_CAP_PPC_HWRNG
:
566 r
= kvmppc_hwrng_present();
568 case KVM_CAP_PPC_MMU_RADIX
:
569 r
= !!(hv_enabled
&& radix_enabled());
571 case KVM_CAP_PPC_MMU_HASH_V3
:
572 r
= !!(hv_enabled
&& !radix_enabled() &&
573 cpu_has_feature(CPU_FTR_ARCH_300
));
576 case KVM_CAP_SYNC_MMU
:
577 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
579 #elif defined(KVM_ARCH_WANT_MMU_NOTIFIER)
585 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
586 case KVM_CAP_PPC_HTAB_FD
:
590 case KVM_CAP_NR_VCPUS
:
592 * Recommending a number of CPUs is somewhat arbitrary; we
593 * return the number of present CPUs for -HV (since a host
594 * will have secondary threads "offline"), and for other KVM
595 * implementations just count online CPUs.
598 r
= num_present_cpus();
600 r
= num_online_cpus();
602 case KVM_CAP_NR_MEMSLOTS
:
603 r
= KVM_USER_MEM_SLOTS
;
605 case KVM_CAP_MAX_VCPUS
:
608 #ifdef CONFIG_PPC_BOOK3S_64
609 case KVM_CAP_PPC_GET_SMMU_INFO
:
612 case KVM_CAP_SPAPR_MULTITCE
:
615 case KVM_CAP_SPAPR_RESIZE_HPT
:
616 /* Disable this on POWER9 until code handles new HPTE format */
617 r
= !!hv_enabled
&& !cpu_has_feature(CPU_FTR_ARCH_300
);
620 case KVM_CAP_PPC_HTM
:
621 r
= cpu_has_feature(CPU_FTR_TM_COMP
) &&
622 is_kvmppc_hv_enabled(kvm
);
632 long kvm_arch_dev_ioctl(struct file
*filp
,
633 unsigned int ioctl
, unsigned long arg
)
638 void kvm_arch_free_memslot(struct kvm
*kvm
, struct kvm_memory_slot
*free
,
639 struct kvm_memory_slot
*dont
)
641 kvmppc_core_free_memslot(kvm
, free
, dont
);
644 int kvm_arch_create_memslot(struct kvm
*kvm
, struct kvm_memory_slot
*slot
,
645 unsigned long npages
)
647 return kvmppc_core_create_memslot(kvm
, slot
, npages
);
650 int kvm_arch_prepare_memory_region(struct kvm
*kvm
,
651 struct kvm_memory_slot
*memslot
,
652 const struct kvm_userspace_memory_region
*mem
,
653 enum kvm_mr_change change
)
655 return kvmppc_core_prepare_memory_region(kvm
, memslot
, mem
);
658 void kvm_arch_commit_memory_region(struct kvm
*kvm
,
659 const struct kvm_userspace_memory_region
*mem
,
660 const struct kvm_memory_slot
*old
,
661 const struct kvm_memory_slot
*new,
662 enum kvm_mr_change change
)
664 kvmppc_core_commit_memory_region(kvm
, mem
, old
, new);
667 void kvm_arch_flush_shadow_memslot(struct kvm
*kvm
,
668 struct kvm_memory_slot
*slot
)
670 kvmppc_core_flush_memslot(kvm
, slot
);
673 struct kvm_vcpu
*kvm_arch_vcpu_create(struct kvm
*kvm
, unsigned int id
)
675 struct kvm_vcpu
*vcpu
;
676 vcpu
= kvmppc_core_vcpu_create(kvm
, id
);
678 vcpu
->arch
.wqp
= &vcpu
->wq
;
679 kvmppc_create_vcpu_debugfs(vcpu
, id
);
684 void kvm_arch_vcpu_postcreate(struct kvm_vcpu
*vcpu
)
688 void kvm_arch_vcpu_free(struct kvm_vcpu
*vcpu
)
690 /* Make sure we're not using the vcpu anymore */
691 hrtimer_cancel(&vcpu
->arch
.dec_timer
);
693 kvmppc_remove_vcpu_debugfs(vcpu
);
695 switch (vcpu
->arch
.irq_type
) {
696 case KVMPPC_IRQ_MPIC
:
697 kvmppc_mpic_disconnect_vcpu(vcpu
->arch
.mpic
, vcpu
);
699 case KVMPPC_IRQ_XICS
:
700 kvmppc_xics_free_icp(vcpu
);
704 kvmppc_core_vcpu_free(vcpu
);
707 void kvm_arch_vcpu_destroy(struct kvm_vcpu
*vcpu
)
709 kvm_arch_vcpu_free(vcpu
);
712 int kvm_cpu_has_pending_timer(struct kvm_vcpu
*vcpu
)
714 return kvmppc_core_pending_dec(vcpu
);
717 static enum hrtimer_restart
kvmppc_decrementer_wakeup(struct hrtimer
*timer
)
719 struct kvm_vcpu
*vcpu
;
721 vcpu
= container_of(timer
, struct kvm_vcpu
, arch
.dec_timer
);
722 kvmppc_decrementer_func(vcpu
);
724 return HRTIMER_NORESTART
;
727 int kvm_arch_vcpu_init(struct kvm_vcpu
*vcpu
)
731 hrtimer_init(&vcpu
->arch
.dec_timer
, CLOCK_REALTIME
, HRTIMER_MODE_ABS
);
732 vcpu
->arch
.dec_timer
.function
= kvmppc_decrementer_wakeup
;
733 vcpu
->arch
.dec_expires
= ~(u64
)0;
735 #ifdef CONFIG_KVM_EXIT_TIMING
736 mutex_init(&vcpu
->arch
.exit_timing_lock
);
738 ret
= kvmppc_subarch_vcpu_init(vcpu
);
742 void kvm_arch_vcpu_uninit(struct kvm_vcpu
*vcpu
)
744 kvmppc_mmu_destroy(vcpu
);
745 kvmppc_subarch_vcpu_uninit(vcpu
);
748 void kvm_arch_vcpu_load(struct kvm_vcpu
*vcpu
, int cpu
)
752 * vrsave (formerly usprg0) isn't used by Linux, but may
753 * be used by the guest.
755 * On non-booke this is associated with Altivec and
756 * is handled by code in book3s.c.
758 mtspr(SPRN_VRSAVE
, vcpu
->arch
.vrsave
);
760 kvmppc_core_vcpu_load(vcpu
, cpu
);
763 void kvm_arch_vcpu_put(struct kvm_vcpu
*vcpu
)
765 kvmppc_core_vcpu_put(vcpu
);
767 vcpu
->arch
.vrsave
= mfspr(SPRN_VRSAVE
);
772 * irq_bypass_add_producer and irq_bypass_del_producer are only
773 * useful if the architecture supports PCI passthrough.
774 * irq_bypass_stop and irq_bypass_start are not needed and so
775 * kvm_ops are not defined for them.
777 bool kvm_arch_has_irq_bypass(void)
779 return ((kvmppc_hv_ops
&& kvmppc_hv_ops
->irq_bypass_add_producer
) ||
780 (kvmppc_pr_ops
&& kvmppc_pr_ops
->irq_bypass_add_producer
));
783 int kvm_arch_irq_bypass_add_producer(struct irq_bypass_consumer
*cons
,
784 struct irq_bypass_producer
*prod
)
786 struct kvm_kernel_irqfd
*irqfd
=
787 container_of(cons
, struct kvm_kernel_irqfd
, consumer
);
788 struct kvm
*kvm
= irqfd
->kvm
;
790 if (kvm
->arch
.kvm_ops
->irq_bypass_add_producer
)
791 return kvm
->arch
.kvm_ops
->irq_bypass_add_producer(cons
, prod
);
796 void kvm_arch_irq_bypass_del_producer(struct irq_bypass_consumer
*cons
,
797 struct irq_bypass_producer
*prod
)
799 struct kvm_kernel_irqfd
*irqfd
=
800 container_of(cons
, struct kvm_kernel_irqfd
, consumer
);
801 struct kvm
*kvm
= irqfd
->kvm
;
803 if (kvm
->arch
.kvm_ops
->irq_bypass_del_producer
)
804 kvm
->arch
.kvm_ops
->irq_bypass_del_producer(cons
, prod
);
808 static inline int kvmppc_get_vsr_dword_offset(int index
)
812 if ((index
!= 0) && (index
!= 1))
824 static inline int kvmppc_get_vsr_word_offset(int index
)
828 if ((index
> 3) || (index
< 0))
839 static inline void kvmppc_set_vsr_dword(struct kvm_vcpu
*vcpu
,
842 union kvmppc_one_reg val
;
843 int offset
= kvmppc_get_vsr_dword_offset(vcpu
->arch
.mmio_vsx_offset
);
844 int index
= vcpu
->arch
.io_gpr
& KVM_MMIO_REG_MASK
;
849 if (vcpu
->arch
.mmio_vsx_tx_sx_enabled
) {
850 val
.vval
= VCPU_VSX_VR(vcpu
, index
);
851 val
.vsxval
[offset
] = gpr
;
852 VCPU_VSX_VR(vcpu
, index
) = val
.vval
;
854 VCPU_VSX_FPR(vcpu
, index
, offset
) = gpr
;
858 static inline void kvmppc_set_vsr_dword_dump(struct kvm_vcpu
*vcpu
,
861 union kvmppc_one_reg val
;
862 int index
= vcpu
->arch
.io_gpr
& KVM_MMIO_REG_MASK
;
864 if (vcpu
->arch
.mmio_vsx_tx_sx_enabled
) {
865 val
.vval
= VCPU_VSX_VR(vcpu
, index
);
868 VCPU_VSX_VR(vcpu
, index
) = val
.vval
;
870 VCPU_VSX_FPR(vcpu
, index
, 0) = gpr
;
871 VCPU_VSX_FPR(vcpu
, index
, 1) = gpr
;
875 static inline void kvmppc_set_vsr_word(struct kvm_vcpu
*vcpu
,
878 union kvmppc_one_reg val
;
879 int offset
= kvmppc_get_vsr_word_offset(vcpu
->arch
.mmio_vsx_offset
);
880 int index
= vcpu
->arch
.io_gpr
& KVM_MMIO_REG_MASK
;
881 int dword_offset
, word_offset
;
886 if (vcpu
->arch
.mmio_vsx_tx_sx_enabled
) {
887 val
.vval
= VCPU_VSX_VR(vcpu
, index
);
888 val
.vsx32val
[offset
] = gpr32
;
889 VCPU_VSX_VR(vcpu
, index
) = val
.vval
;
891 dword_offset
= offset
/ 2;
892 word_offset
= offset
% 2;
893 val
.vsxval
[0] = VCPU_VSX_FPR(vcpu
, index
, dword_offset
);
894 val
.vsx32val
[word_offset
] = gpr32
;
895 VCPU_VSX_FPR(vcpu
, index
, dword_offset
) = val
.vsxval
[0];
898 #endif /* CONFIG_VSX */
900 #ifdef CONFIG_PPC_FPU
901 static inline u64
sp_to_dp(u32 fprs
)
907 asm ("lfs%U1%X1 0,%1; stfd%U0%X0 0,%0" : "=m" (fprd
) : "m" (fprs
)
913 static inline u32
dp_to_sp(u64 fprd
)
919 asm ("lfd%U1%X1 0,%1; stfs%U0%X0 0,%0" : "=m" (fprs
) : "m" (fprd
)
926 #define sp_to_dp(x) (x)
927 #define dp_to_sp(x) (x)
928 #endif /* CONFIG_PPC_FPU */
930 static void kvmppc_complete_mmio_load(struct kvm_vcpu
*vcpu
,
933 u64
uninitialized_var(gpr
);
935 if (run
->mmio
.len
> sizeof(gpr
)) {
936 printk(KERN_ERR
"bad MMIO length: %d\n", run
->mmio
.len
);
940 if (!vcpu
->arch
.mmio_host_swabbed
) {
941 switch (run
->mmio
.len
) {
942 case 8: gpr
= *(u64
*)run
->mmio
.data
; break;
943 case 4: gpr
= *(u32
*)run
->mmio
.data
; break;
944 case 2: gpr
= *(u16
*)run
->mmio
.data
; break;
945 case 1: gpr
= *(u8
*)run
->mmio
.data
; break;
948 switch (run
->mmio
.len
) {
949 case 8: gpr
= swab64(*(u64
*)run
->mmio
.data
); break;
950 case 4: gpr
= swab32(*(u32
*)run
->mmio
.data
); break;
951 case 2: gpr
= swab16(*(u16
*)run
->mmio
.data
); break;
952 case 1: gpr
= *(u8
*)run
->mmio
.data
; break;
956 /* conversion between single and double precision */
957 if ((vcpu
->arch
.mmio_sp64_extend
) && (run
->mmio
.len
== 4))
960 if (vcpu
->arch
.mmio_sign_extend
) {
961 switch (run
->mmio
.len
) {
976 switch (vcpu
->arch
.io_gpr
& KVM_MMIO_REG_EXT_MASK
) {
977 case KVM_MMIO_REG_GPR
:
978 kvmppc_set_gpr(vcpu
, vcpu
->arch
.io_gpr
, gpr
);
980 case KVM_MMIO_REG_FPR
:
981 VCPU_FPR(vcpu
, vcpu
->arch
.io_gpr
& KVM_MMIO_REG_MASK
) = gpr
;
983 #ifdef CONFIG_PPC_BOOK3S
984 case KVM_MMIO_REG_QPR
:
985 vcpu
->arch
.qpr
[vcpu
->arch
.io_gpr
& KVM_MMIO_REG_MASK
] = gpr
;
987 case KVM_MMIO_REG_FQPR
:
988 VCPU_FPR(vcpu
, vcpu
->arch
.io_gpr
& KVM_MMIO_REG_MASK
) = gpr
;
989 vcpu
->arch
.qpr
[vcpu
->arch
.io_gpr
& KVM_MMIO_REG_MASK
] = gpr
;
993 case KVM_MMIO_REG_VSX
:
994 if (vcpu
->arch
.mmio_vsx_copy_type
== KVMPPC_VSX_COPY_DWORD
)
995 kvmppc_set_vsr_dword(vcpu
, gpr
);
996 else if (vcpu
->arch
.mmio_vsx_copy_type
== KVMPPC_VSX_COPY_WORD
)
997 kvmppc_set_vsr_word(vcpu
, gpr
);
998 else if (vcpu
->arch
.mmio_vsx_copy_type
==
999 KVMPPC_VSX_COPY_DWORD_LOAD_DUMP
)
1000 kvmppc_set_vsr_dword_dump(vcpu
, gpr
);
1008 static int __kvmppc_handle_load(struct kvm_run
*run
, struct kvm_vcpu
*vcpu
,
1009 unsigned int rt
, unsigned int bytes
,
1010 int is_default_endian
, int sign_extend
)
1015 /* Pity C doesn't have a logical XOR operator */
1016 if (kvmppc_need_byteswap(vcpu
)) {
1017 host_swabbed
= is_default_endian
;
1019 host_swabbed
= !is_default_endian
;
1022 if (bytes
> sizeof(run
->mmio
.data
)) {
1023 printk(KERN_ERR
"%s: bad MMIO length: %d\n", __func__
,
1027 run
->mmio
.phys_addr
= vcpu
->arch
.paddr_accessed
;
1028 run
->mmio
.len
= bytes
;
1029 run
->mmio
.is_write
= 0;
1031 vcpu
->arch
.io_gpr
= rt
;
1032 vcpu
->arch
.mmio_host_swabbed
= host_swabbed
;
1033 vcpu
->mmio_needed
= 1;
1034 vcpu
->mmio_is_write
= 0;
1035 vcpu
->arch
.mmio_sign_extend
= sign_extend
;
1037 idx
= srcu_read_lock(&vcpu
->kvm
->srcu
);
1039 ret
= kvm_io_bus_read(vcpu
, KVM_MMIO_BUS
, run
->mmio
.phys_addr
,
1040 bytes
, &run
->mmio
.data
);
1042 srcu_read_unlock(&vcpu
->kvm
->srcu
, idx
);
1045 kvmppc_complete_mmio_load(vcpu
, run
);
1046 vcpu
->mmio_needed
= 0;
1047 return EMULATE_DONE
;
1050 return EMULATE_DO_MMIO
;
1053 int kvmppc_handle_load(struct kvm_run
*run
, struct kvm_vcpu
*vcpu
,
1054 unsigned int rt
, unsigned int bytes
,
1055 int is_default_endian
)
1057 return __kvmppc_handle_load(run
, vcpu
, rt
, bytes
, is_default_endian
, 0);
1059 EXPORT_SYMBOL_GPL(kvmppc_handle_load
);
1061 /* Same as above, but sign extends */
1062 int kvmppc_handle_loads(struct kvm_run
*run
, struct kvm_vcpu
*vcpu
,
1063 unsigned int rt
, unsigned int bytes
,
1064 int is_default_endian
)
1066 return __kvmppc_handle_load(run
, vcpu
, rt
, bytes
, is_default_endian
, 1);
1070 int kvmppc_handle_vsx_load(struct kvm_run
*run
, struct kvm_vcpu
*vcpu
,
1071 unsigned int rt
, unsigned int bytes
,
1072 int is_default_endian
, int mmio_sign_extend
)
1074 enum emulation_result emulated
= EMULATE_DONE
;
1076 /* Currently, mmio_vsx_copy_nums only allowed to be less than 4 */
1077 if ( (vcpu
->arch
.mmio_vsx_copy_nums
> 4) ||
1078 (vcpu
->arch
.mmio_vsx_copy_nums
< 0) ) {
1079 return EMULATE_FAIL
;
1082 while (vcpu
->arch
.mmio_vsx_copy_nums
) {
1083 emulated
= __kvmppc_handle_load(run
, vcpu
, rt
, bytes
,
1084 is_default_endian
, mmio_sign_extend
);
1086 if (emulated
!= EMULATE_DONE
)
1089 vcpu
->arch
.paddr_accessed
+= run
->mmio
.len
;
1091 vcpu
->arch
.mmio_vsx_copy_nums
--;
1092 vcpu
->arch
.mmio_vsx_offset
++;
1096 #endif /* CONFIG_VSX */
1098 int kvmppc_handle_store(struct kvm_run
*run
, struct kvm_vcpu
*vcpu
,
1099 u64 val
, unsigned int bytes
, int is_default_endian
)
1101 void *data
= run
->mmio
.data
;
1105 /* Pity C doesn't have a logical XOR operator */
1106 if (kvmppc_need_byteswap(vcpu
)) {
1107 host_swabbed
= is_default_endian
;
1109 host_swabbed
= !is_default_endian
;
1112 if (bytes
> sizeof(run
->mmio
.data
)) {
1113 printk(KERN_ERR
"%s: bad MMIO length: %d\n", __func__
,
1117 run
->mmio
.phys_addr
= vcpu
->arch
.paddr_accessed
;
1118 run
->mmio
.len
= bytes
;
1119 run
->mmio
.is_write
= 1;
1120 vcpu
->mmio_needed
= 1;
1121 vcpu
->mmio_is_write
= 1;
1123 if ((vcpu
->arch
.mmio_sp64_extend
) && (bytes
== 4))
1124 val
= dp_to_sp(val
);
1126 /* Store the value at the lowest bytes in 'data'. */
1127 if (!host_swabbed
) {
1129 case 8: *(u64
*)data
= val
; break;
1130 case 4: *(u32
*)data
= val
; break;
1131 case 2: *(u16
*)data
= val
; break;
1132 case 1: *(u8
*)data
= val
; break;
1136 case 8: *(u64
*)data
= swab64(val
); break;
1137 case 4: *(u32
*)data
= swab32(val
); break;
1138 case 2: *(u16
*)data
= swab16(val
); break;
1139 case 1: *(u8
*)data
= val
; break;
1143 idx
= srcu_read_lock(&vcpu
->kvm
->srcu
);
1145 ret
= kvm_io_bus_write(vcpu
, KVM_MMIO_BUS
, run
->mmio
.phys_addr
,
1146 bytes
, &run
->mmio
.data
);
1148 srcu_read_unlock(&vcpu
->kvm
->srcu
, idx
);
1151 vcpu
->mmio_needed
= 0;
1152 return EMULATE_DONE
;
1155 return EMULATE_DO_MMIO
;
1157 EXPORT_SYMBOL_GPL(kvmppc_handle_store
);
1160 static inline int kvmppc_get_vsr_data(struct kvm_vcpu
*vcpu
, int rs
, u64
*val
)
1162 u32 dword_offset
, word_offset
;
1163 union kvmppc_one_reg reg
;
1165 int copy_type
= vcpu
->arch
.mmio_vsx_copy_type
;
1168 switch (copy_type
) {
1169 case KVMPPC_VSX_COPY_DWORD
:
1171 kvmppc_get_vsr_dword_offset(vcpu
->arch
.mmio_vsx_offset
);
1173 if (vsx_offset
== -1) {
1178 if (!vcpu
->arch
.mmio_vsx_tx_sx_enabled
) {
1179 *val
= VCPU_VSX_FPR(vcpu
, rs
, vsx_offset
);
1181 reg
.vval
= VCPU_VSX_VR(vcpu
, rs
);
1182 *val
= reg
.vsxval
[vsx_offset
];
1186 case KVMPPC_VSX_COPY_WORD
:
1188 kvmppc_get_vsr_word_offset(vcpu
->arch
.mmio_vsx_offset
);
1190 if (vsx_offset
== -1) {
1195 if (!vcpu
->arch
.mmio_vsx_tx_sx_enabled
) {
1196 dword_offset
= vsx_offset
/ 2;
1197 word_offset
= vsx_offset
% 2;
1198 reg
.vsxval
[0] = VCPU_VSX_FPR(vcpu
, rs
, dword_offset
);
1199 *val
= reg
.vsx32val
[word_offset
];
1201 reg
.vval
= VCPU_VSX_VR(vcpu
, rs
);
1202 *val
= reg
.vsx32val
[vsx_offset
];
1214 int kvmppc_handle_vsx_store(struct kvm_run
*run
, struct kvm_vcpu
*vcpu
,
1215 int rs
, unsigned int bytes
, int is_default_endian
)
1218 enum emulation_result emulated
= EMULATE_DONE
;
1220 vcpu
->arch
.io_gpr
= rs
;
1222 /* Currently, mmio_vsx_copy_nums only allowed to be less than 4 */
1223 if ( (vcpu
->arch
.mmio_vsx_copy_nums
> 4) ||
1224 (vcpu
->arch
.mmio_vsx_copy_nums
< 0) ) {
1225 return EMULATE_FAIL
;
1228 while (vcpu
->arch
.mmio_vsx_copy_nums
) {
1229 if (kvmppc_get_vsr_data(vcpu
, rs
, &val
) == -1)
1230 return EMULATE_FAIL
;
1232 emulated
= kvmppc_handle_store(run
, vcpu
,
1233 val
, bytes
, is_default_endian
);
1235 if (emulated
!= EMULATE_DONE
)
1238 vcpu
->arch
.paddr_accessed
+= run
->mmio
.len
;
1240 vcpu
->arch
.mmio_vsx_copy_nums
--;
1241 vcpu
->arch
.mmio_vsx_offset
++;
1247 static int kvmppc_emulate_mmio_vsx_loadstore(struct kvm_vcpu
*vcpu
,
1248 struct kvm_run
*run
)
1250 enum emulation_result emulated
= EMULATE_FAIL
;
1253 vcpu
->arch
.paddr_accessed
+= run
->mmio
.len
;
1255 if (!vcpu
->mmio_is_write
) {
1256 emulated
= kvmppc_handle_vsx_load(run
, vcpu
, vcpu
->arch
.io_gpr
,
1257 run
->mmio
.len
, 1, vcpu
->arch
.mmio_sign_extend
);
1259 emulated
= kvmppc_handle_vsx_store(run
, vcpu
,
1260 vcpu
->arch
.io_gpr
, run
->mmio
.len
, 1);
1264 case EMULATE_DO_MMIO
:
1265 run
->exit_reason
= KVM_EXIT_MMIO
;
1269 pr_info("KVM: MMIO emulation failed (VSX repeat)\n");
1270 run
->exit_reason
= KVM_EXIT_INTERNAL_ERROR
;
1271 run
->internal
.suberror
= KVM_INTERNAL_ERROR_EMULATION
;
1280 #endif /* CONFIG_VSX */
1282 int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu
*vcpu
, struct kvm_one_reg
*reg
)
1285 union kvmppc_one_reg val
;
1288 size
= one_reg_size(reg
->id
);
1289 if (size
> sizeof(val
))
1292 r
= kvmppc_get_one_reg(vcpu
, reg
->id
, &val
);
1296 #ifdef CONFIG_ALTIVEC
1297 case KVM_REG_PPC_VR0
... KVM_REG_PPC_VR31
:
1298 if (!cpu_has_feature(CPU_FTR_ALTIVEC
)) {
1302 val
.vval
= vcpu
->arch
.vr
.vr
[reg
->id
- KVM_REG_PPC_VR0
];
1304 case KVM_REG_PPC_VSCR
:
1305 if (!cpu_has_feature(CPU_FTR_ALTIVEC
)) {
1309 val
= get_reg_val(reg
->id
, vcpu
->arch
.vr
.vscr
.u
[3]);
1311 case KVM_REG_PPC_VRSAVE
:
1312 val
= get_reg_val(reg
->id
, vcpu
->arch
.vrsave
);
1314 #endif /* CONFIG_ALTIVEC */
1324 if (copy_to_user((char __user
*)(unsigned long)reg
->addr
, &val
, size
))
1330 int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu
*vcpu
, struct kvm_one_reg
*reg
)
1333 union kvmppc_one_reg val
;
1336 size
= one_reg_size(reg
->id
);
1337 if (size
> sizeof(val
))
1340 if (copy_from_user(&val
, (char __user
*)(unsigned long)reg
->addr
, size
))
1343 r
= kvmppc_set_one_reg(vcpu
, reg
->id
, &val
);
1347 #ifdef CONFIG_ALTIVEC
1348 case KVM_REG_PPC_VR0
... KVM_REG_PPC_VR31
:
1349 if (!cpu_has_feature(CPU_FTR_ALTIVEC
)) {
1353 vcpu
->arch
.vr
.vr
[reg
->id
- KVM_REG_PPC_VR0
] = val
.vval
;
1355 case KVM_REG_PPC_VSCR
:
1356 if (!cpu_has_feature(CPU_FTR_ALTIVEC
)) {
1360 vcpu
->arch
.vr
.vscr
.u
[3] = set_reg_val(reg
->id
, val
);
1362 case KVM_REG_PPC_VRSAVE
:
1363 if (!cpu_has_feature(CPU_FTR_ALTIVEC
)) {
1367 vcpu
->arch
.vrsave
= set_reg_val(reg
->id
, val
);
1369 #endif /* CONFIG_ALTIVEC */
1379 int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu
*vcpu
, struct kvm_run
*run
)
1384 if (vcpu
->mmio_needed
) {
1385 vcpu
->mmio_needed
= 0;
1386 if (!vcpu
->mmio_is_write
)
1387 kvmppc_complete_mmio_load(vcpu
, run
);
1389 if (vcpu
->arch
.mmio_vsx_copy_nums
> 0) {
1390 vcpu
->arch
.mmio_vsx_copy_nums
--;
1391 vcpu
->arch
.mmio_vsx_offset
++;
1394 if (vcpu
->arch
.mmio_vsx_copy_nums
> 0) {
1395 r
= kvmppc_emulate_mmio_vsx_loadstore(vcpu
, run
);
1396 if (r
== RESUME_HOST
) {
1397 vcpu
->mmio_needed
= 1;
1402 } else if (vcpu
->arch
.osi_needed
) {
1403 u64
*gprs
= run
->osi
.gprs
;
1406 for (i
= 0; i
< 32; i
++)
1407 kvmppc_set_gpr(vcpu
, i
, gprs
[i
]);
1408 vcpu
->arch
.osi_needed
= 0;
1409 } else if (vcpu
->arch
.hcall_needed
) {
1412 kvmppc_set_gpr(vcpu
, 3, run
->papr_hcall
.ret
);
1413 for (i
= 0; i
< 9; ++i
)
1414 kvmppc_set_gpr(vcpu
, 4 + i
, run
->papr_hcall
.args
[i
]);
1415 vcpu
->arch
.hcall_needed
= 0;
1417 } else if (vcpu
->arch
.epr_needed
) {
1418 kvmppc_set_epr(vcpu
, run
->epr
.epr
);
1419 vcpu
->arch
.epr_needed
= 0;
1423 if (vcpu
->sigset_active
)
1424 sigprocmask(SIG_SETMASK
, &vcpu
->sigset
, &sigsaved
);
1426 if (run
->immediate_exit
)
1429 r
= kvmppc_vcpu_run(run
, vcpu
);
1431 if (vcpu
->sigset_active
)
1432 sigprocmask(SIG_SETMASK
, &sigsaved
, NULL
);
1437 int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu
*vcpu
, struct kvm_interrupt
*irq
)
1439 if (irq
->irq
== KVM_INTERRUPT_UNSET
) {
1440 kvmppc_core_dequeue_external(vcpu
);
1444 kvmppc_core_queue_external(vcpu
, irq
);
1446 kvm_vcpu_kick(vcpu
);
1451 static int kvm_vcpu_ioctl_enable_cap(struct kvm_vcpu
*vcpu
,
1452 struct kvm_enable_cap
*cap
)
1460 case KVM_CAP_PPC_OSI
:
1462 vcpu
->arch
.osi_enabled
= true;
1464 case KVM_CAP_PPC_PAPR
:
1466 vcpu
->arch
.papr_enabled
= true;
1468 case KVM_CAP_PPC_EPR
:
1471 vcpu
->arch
.epr_flags
|= KVMPPC_EPR_USER
;
1473 vcpu
->arch
.epr_flags
&= ~KVMPPC_EPR_USER
;
1476 case KVM_CAP_PPC_BOOKE_WATCHDOG
:
1478 vcpu
->arch
.watchdog_enabled
= true;
1481 #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC)
1482 case KVM_CAP_SW_TLB
: {
1483 struct kvm_config_tlb cfg
;
1484 void __user
*user_ptr
= (void __user
*)(uintptr_t)cap
->args
[0];
1487 if (copy_from_user(&cfg
, user_ptr
, sizeof(cfg
)))
1490 r
= kvm_vcpu_ioctl_config_tlb(vcpu
, &cfg
);
1494 #ifdef CONFIG_KVM_MPIC
1495 case KVM_CAP_IRQ_MPIC
: {
1497 struct kvm_device
*dev
;
1500 f
= fdget(cap
->args
[0]);
1505 dev
= kvm_device_from_filp(f
.file
);
1507 r
= kvmppc_mpic_connect_vcpu(dev
, vcpu
, cap
->args
[1]);
1513 #ifdef CONFIG_KVM_XICS
1514 case KVM_CAP_IRQ_XICS
: {
1516 struct kvm_device
*dev
;
1519 f
= fdget(cap
->args
[0]);
1524 dev
= kvm_device_from_filp(f
.file
);
1526 r
= kvmppc_xics_connect_vcpu(dev
, vcpu
, cap
->args
[1]);
1531 #endif /* CONFIG_KVM_XICS */
1538 r
= kvmppc_sanity_check(vcpu
);
1543 bool kvm_arch_intc_initialized(struct kvm
*kvm
)
1545 #ifdef CONFIG_KVM_MPIC
1549 #ifdef CONFIG_KVM_XICS
1556 int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu
*vcpu
,
1557 struct kvm_mp_state
*mp_state
)
1562 int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu
*vcpu
,
1563 struct kvm_mp_state
*mp_state
)
1568 long kvm_arch_vcpu_ioctl(struct file
*filp
,
1569 unsigned int ioctl
, unsigned long arg
)
1571 struct kvm_vcpu
*vcpu
= filp
->private_data
;
1572 void __user
*argp
= (void __user
*)arg
;
1576 case KVM_INTERRUPT
: {
1577 struct kvm_interrupt irq
;
1579 if (copy_from_user(&irq
, argp
, sizeof(irq
)))
1581 r
= kvm_vcpu_ioctl_interrupt(vcpu
, &irq
);
1585 case KVM_ENABLE_CAP
:
1587 struct kvm_enable_cap cap
;
1589 if (copy_from_user(&cap
, argp
, sizeof(cap
)))
1591 r
= kvm_vcpu_ioctl_enable_cap(vcpu
, &cap
);
1595 case KVM_SET_ONE_REG
:
1596 case KVM_GET_ONE_REG
:
1598 struct kvm_one_reg reg
;
1600 if (copy_from_user(®
, argp
, sizeof(reg
)))
1602 if (ioctl
== KVM_SET_ONE_REG
)
1603 r
= kvm_vcpu_ioctl_set_one_reg(vcpu
, ®
);
1605 r
= kvm_vcpu_ioctl_get_one_reg(vcpu
, ®
);
1609 #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC)
1610 case KVM_DIRTY_TLB
: {
1611 struct kvm_dirty_tlb dirty
;
1613 if (copy_from_user(&dirty
, argp
, sizeof(dirty
)))
1615 r
= kvm_vcpu_ioctl_dirty_tlb(vcpu
, &dirty
);
1627 int kvm_arch_vcpu_fault(struct kvm_vcpu
*vcpu
, struct vm_fault
*vmf
)
1629 return VM_FAULT_SIGBUS
;
1632 static int kvm_vm_ioctl_get_pvinfo(struct kvm_ppc_pvinfo
*pvinfo
)
1634 u32 inst_nop
= 0x60000000;
1635 #ifdef CONFIG_KVM_BOOKE_HV
1636 u32 inst_sc1
= 0x44000022;
1637 pvinfo
->hcall
[0] = cpu_to_be32(inst_sc1
);
1638 pvinfo
->hcall
[1] = cpu_to_be32(inst_nop
);
1639 pvinfo
->hcall
[2] = cpu_to_be32(inst_nop
);
1640 pvinfo
->hcall
[3] = cpu_to_be32(inst_nop
);
1642 u32 inst_lis
= 0x3c000000;
1643 u32 inst_ori
= 0x60000000;
1644 u32 inst_sc
= 0x44000002;
1645 u32 inst_imm_mask
= 0xffff;
1648 * The hypercall to get into KVM from within guest context is as
1651 * lis r0, r0, KVM_SC_MAGIC_R0@h
1652 * ori r0, KVM_SC_MAGIC_R0@l
1656 pvinfo
->hcall
[0] = cpu_to_be32(inst_lis
| ((KVM_SC_MAGIC_R0
>> 16) & inst_imm_mask
));
1657 pvinfo
->hcall
[1] = cpu_to_be32(inst_ori
| (KVM_SC_MAGIC_R0
& inst_imm_mask
));
1658 pvinfo
->hcall
[2] = cpu_to_be32(inst_sc
);
1659 pvinfo
->hcall
[3] = cpu_to_be32(inst_nop
);
1662 pvinfo
->flags
= KVM_PPC_PVINFO_FLAGS_EV_IDLE
;
1667 int kvm_vm_ioctl_irq_line(struct kvm
*kvm
, struct kvm_irq_level
*irq_event
,
1670 if (!irqchip_in_kernel(kvm
))
1673 irq_event
->status
= kvm_set_irq(kvm
, KVM_USERSPACE_IRQ_SOURCE_ID
,
1674 irq_event
->irq
, irq_event
->level
,
1680 static int kvm_vm_ioctl_enable_cap(struct kvm
*kvm
,
1681 struct kvm_enable_cap
*cap
)
1689 #ifdef CONFIG_KVM_BOOK3S_64_HANDLER
1690 case KVM_CAP_PPC_ENABLE_HCALL
: {
1691 unsigned long hcall
= cap
->args
[0];
1694 if (hcall
> MAX_HCALL_OPCODE
|| (hcall
& 3) ||
1697 if (!kvmppc_book3s_hcall_implemented(kvm
, hcall
))
1700 set_bit(hcall
/ 4, kvm
->arch
.enabled_hcalls
);
1702 clear_bit(hcall
/ 4, kvm
->arch
.enabled_hcalls
);
1715 long kvm_arch_vm_ioctl(struct file
*filp
,
1716 unsigned int ioctl
, unsigned long arg
)
1718 struct kvm
*kvm __maybe_unused
= filp
->private_data
;
1719 void __user
*argp
= (void __user
*)arg
;
1723 case KVM_PPC_GET_PVINFO
: {
1724 struct kvm_ppc_pvinfo pvinfo
;
1725 memset(&pvinfo
, 0, sizeof(pvinfo
));
1726 r
= kvm_vm_ioctl_get_pvinfo(&pvinfo
);
1727 if (copy_to_user(argp
, &pvinfo
, sizeof(pvinfo
))) {
1734 case KVM_ENABLE_CAP
:
1736 struct kvm_enable_cap cap
;
1738 if (copy_from_user(&cap
, argp
, sizeof(cap
)))
1740 r
= kvm_vm_ioctl_enable_cap(kvm
, &cap
);
1743 #ifdef CONFIG_PPC_BOOK3S_64
1744 case KVM_CREATE_SPAPR_TCE_64
: {
1745 struct kvm_create_spapr_tce_64 create_tce_64
;
1748 if (copy_from_user(&create_tce_64
, argp
, sizeof(create_tce_64
)))
1750 if (create_tce_64
.flags
) {
1754 r
= kvm_vm_ioctl_create_spapr_tce(kvm
, &create_tce_64
);
1757 case KVM_CREATE_SPAPR_TCE
: {
1758 struct kvm_create_spapr_tce create_tce
;
1759 struct kvm_create_spapr_tce_64 create_tce_64
;
1762 if (copy_from_user(&create_tce
, argp
, sizeof(create_tce
)))
1765 create_tce_64
.liobn
= create_tce
.liobn
;
1766 create_tce_64
.page_shift
= IOMMU_PAGE_SHIFT_4K
;
1767 create_tce_64
.offset
= 0;
1768 create_tce_64
.size
= create_tce
.window_size
>>
1769 IOMMU_PAGE_SHIFT_4K
;
1770 create_tce_64
.flags
= 0;
1771 r
= kvm_vm_ioctl_create_spapr_tce(kvm
, &create_tce_64
);
1774 case KVM_PPC_GET_SMMU_INFO
: {
1775 struct kvm_ppc_smmu_info info
;
1776 struct kvm
*kvm
= filp
->private_data
;
1778 memset(&info
, 0, sizeof(info
));
1779 r
= kvm
->arch
.kvm_ops
->get_smmu_info(kvm
, &info
);
1780 if (r
>= 0 && copy_to_user(argp
, &info
, sizeof(info
)))
1784 case KVM_PPC_RTAS_DEFINE_TOKEN
: {
1785 struct kvm
*kvm
= filp
->private_data
;
1787 r
= kvm_vm_ioctl_rtas_define_token(kvm
, argp
);
1790 case KVM_PPC_CONFIGURE_V3_MMU
: {
1791 struct kvm
*kvm
= filp
->private_data
;
1792 struct kvm_ppc_mmuv3_cfg cfg
;
1795 if (!kvm
->arch
.kvm_ops
->configure_mmu
)
1798 if (copy_from_user(&cfg
, argp
, sizeof(cfg
)))
1800 r
= kvm
->arch
.kvm_ops
->configure_mmu(kvm
, &cfg
);
1803 case KVM_PPC_GET_RMMU_INFO
: {
1804 struct kvm
*kvm
= filp
->private_data
;
1805 struct kvm_ppc_rmmu_info info
;
1808 if (!kvm
->arch
.kvm_ops
->get_rmmu_info
)
1810 r
= kvm
->arch
.kvm_ops
->get_rmmu_info(kvm
, &info
);
1811 if (r
>= 0 && copy_to_user(argp
, &info
, sizeof(info
)))
1816 struct kvm
*kvm
= filp
->private_data
;
1817 r
= kvm
->arch
.kvm_ops
->arch_vm_ioctl(filp
, ioctl
, arg
);
1819 #else /* CONFIG_PPC_BOOK3S_64 */
1828 static unsigned long lpid_inuse
[BITS_TO_LONGS(KVMPPC_NR_LPIDS
)];
1829 static unsigned long nr_lpids
;
1831 long kvmppc_alloc_lpid(void)
1836 lpid
= find_first_zero_bit(lpid_inuse
, KVMPPC_NR_LPIDS
);
1837 if (lpid
>= nr_lpids
) {
1838 pr_err("%s: No LPIDs free\n", __func__
);
1841 } while (test_and_set_bit(lpid
, lpid_inuse
));
1845 EXPORT_SYMBOL_GPL(kvmppc_alloc_lpid
);
1847 void kvmppc_claim_lpid(long lpid
)
1849 set_bit(lpid
, lpid_inuse
);
1851 EXPORT_SYMBOL_GPL(kvmppc_claim_lpid
);
1853 void kvmppc_free_lpid(long lpid
)
1855 clear_bit(lpid
, lpid_inuse
);
1857 EXPORT_SYMBOL_GPL(kvmppc_free_lpid
);
1859 void kvmppc_init_lpid(unsigned long nr_lpids_param
)
1861 nr_lpids
= min_t(unsigned long, KVMPPC_NR_LPIDS
, nr_lpids_param
);
1862 memset(lpid_inuse
, 0, sizeof(lpid_inuse
));
1864 EXPORT_SYMBOL_GPL(kvmppc_init_lpid
);
1866 int kvm_arch_init(void *opaque
)
1871 EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_ppc_instr
);