1 // SPDX-License-Identifier: GPL-2.0-only
4 * Copyright IBM Corp. 2007
6 * Authors: Hollis Blanchard <hollisb@us.ibm.com>
7 * Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
10 #include <linux/errno.h>
11 #include <linux/err.h>
12 #include <linux/kvm_host.h>
13 #include <linux/vmalloc.h>
14 #include <linux/hrtimer.h>
15 #include <linux/sched/signal.h>
17 #include <linux/slab.h>
18 #include <linux/file.h>
19 #include <linux/module.h>
20 #include <linux/irqbypass.h>
21 #include <linux/kvm_irqfd.h>
22 #include <asm/cputable.h>
23 #include <linux/uaccess.h>
24 #include <asm/kvm_ppc.h>
25 #include <asm/cputhreads.h>
26 #include <asm/irqflags.h>
27 #include <asm/iommu.h>
28 #include <asm/switch_to.h>
30 #ifdef CONFIG_PPC_PSERIES
31 #include <asm/hvcall.h>
32 #include <asm/plpar_wrappers.h>
37 #include "../mm/mmu_decl.h"
39 #define CREATE_TRACE_POINTS
42 struct kvmppc_ops
*kvmppc_hv_ops
;
43 EXPORT_SYMBOL_GPL(kvmppc_hv_ops
);
44 struct kvmppc_ops
*kvmppc_pr_ops
;
45 EXPORT_SYMBOL_GPL(kvmppc_pr_ops
);
48 int kvm_arch_vcpu_runnable(struct kvm_vcpu
*v
)
50 return !!(v
->arch
.pending_exceptions
) || kvm_request_pending(v
);
53 bool kvm_arch_dy_runnable(struct kvm_vcpu
*vcpu
)
55 return kvm_arch_vcpu_runnable(vcpu
);
58 bool kvm_arch_vcpu_in_kernel(struct kvm_vcpu
*vcpu
)
63 int kvm_arch_vcpu_should_kick(struct kvm_vcpu
*vcpu
)
69 * Common checks before entering the guest world. Call with interrupts
74 * == 1 if we're ready to go into guest state
75 * <= 0 if we need to go back to the host with return value
77 int kvmppc_prepare_to_enter(struct kvm_vcpu
*vcpu
)
81 WARN_ON(irqs_disabled());
92 if (signal_pending(current
)) {
93 kvmppc_account_exit(vcpu
, SIGNAL_EXITS
);
94 vcpu
->run
->exit_reason
= KVM_EXIT_INTR
;
99 vcpu
->mode
= IN_GUEST_MODE
;
102 * Reading vcpu->requests must happen after setting vcpu->mode,
103 * so we don't miss a request because the requester sees
104 * OUTSIDE_GUEST_MODE and assumes we'll be checking requests
105 * before next entering the guest (and thus doesn't IPI).
106 * This also orders the write to mode from any reads
107 * to the page tables done while the VCPU is running.
108 * Please see the comment in kvm_flush_remote_tlbs.
112 if (kvm_request_pending(vcpu
)) {
113 /* Make sure we process requests preemptable */
115 trace_kvm_check_requests(vcpu
);
116 r
= kvmppc_core_check_requests(vcpu
);
123 if (kvmppc_core_prepare_to_enter(vcpu
)) {
124 /* interrupts got enabled in between, so we
125 are back at square 1 */
129 guest_enter_irqoff();
137 EXPORT_SYMBOL_GPL(kvmppc_prepare_to_enter
);
139 #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE)
140 static void kvmppc_swab_shared(struct kvm_vcpu
*vcpu
)
142 struct kvm_vcpu_arch_shared
*shared
= vcpu
->arch
.shared
;
145 shared
->sprg0
= swab64(shared
->sprg0
);
146 shared
->sprg1
= swab64(shared
->sprg1
);
147 shared
->sprg2
= swab64(shared
->sprg2
);
148 shared
->sprg3
= swab64(shared
->sprg3
);
149 shared
->srr0
= swab64(shared
->srr0
);
150 shared
->srr1
= swab64(shared
->srr1
);
151 shared
->dar
= swab64(shared
->dar
);
152 shared
->msr
= swab64(shared
->msr
);
153 shared
->dsisr
= swab32(shared
->dsisr
);
154 shared
->int_pending
= swab32(shared
->int_pending
);
155 for (i
= 0; i
< ARRAY_SIZE(shared
->sr
); i
++)
156 shared
->sr
[i
] = swab32(shared
->sr
[i
]);
160 int kvmppc_kvm_pv(struct kvm_vcpu
*vcpu
)
162 int nr
= kvmppc_get_gpr(vcpu
, 11);
164 unsigned long __maybe_unused param1
= kvmppc_get_gpr(vcpu
, 3);
165 unsigned long __maybe_unused param2
= kvmppc_get_gpr(vcpu
, 4);
166 unsigned long __maybe_unused param3
= kvmppc_get_gpr(vcpu
, 5);
167 unsigned long __maybe_unused param4
= kvmppc_get_gpr(vcpu
, 6);
168 unsigned long r2
= 0;
170 if (!(kvmppc_get_msr(vcpu
) & MSR_SF
)) {
172 param1
&= 0xffffffff;
173 param2
&= 0xffffffff;
174 param3
&= 0xffffffff;
175 param4
&= 0xffffffff;
179 case KVM_HCALL_TOKEN(KVM_HC_PPC_MAP_MAGIC_PAGE
):
181 #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE)
182 /* Book3S can be little endian, find it out here */
183 int shared_big_endian
= true;
184 if (vcpu
->arch
.intr_msr
& MSR_LE
)
185 shared_big_endian
= false;
186 if (shared_big_endian
!= vcpu
->arch
.shared_big_endian
)
187 kvmppc_swab_shared(vcpu
);
188 vcpu
->arch
.shared_big_endian
= shared_big_endian
;
191 if (!(param2
& MAGIC_PAGE_FLAG_NOT_MAPPED_NX
)) {
193 * Older versions of the Linux magic page code had
194 * a bug where they would map their trampoline code
195 * NX. If that's the case, remove !PR NX capability.
197 vcpu
->arch
.disable_kernel_nx
= true;
198 kvm_make_request(KVM_REQ_TLB_FLUSH
, vcpu
);
201 vcpu
->arch
.magic_page_pa
= param1
& ~0xfffULL
;
202 vcpu
->arch
.magic_page_ea
= param2
& ~0xfffULL
;
204 #ifdef CONFIG_PPC_64K_PAGES
206 * Make sure our 4k magic page is in the same window of a 64k
207 * page within the guest and within the host's page.
209 if ((vcpu
->arch
.magic_page_pa
& 0xf000) !=
210 ((ulong
)vcpu
->arch
.shared
& 0xf000)) {
211 void *old_shared
= vcpu
->arch
.shared
;
212 ulong shared
= (ulong
)vcpu
->arch
.shared
;
216 shared
|= vcpu
->arch
.magic_page_pa
& 0xf000;
217 new_shared
= (void*)shared
;
218 memcpy(new_shared
, old_shared
, 0x1000);
219 vcpu
->arch
.shared
= new_shared
;
223 r2
= KVM_MAGIC_FEAT_SR
| KVM_MAGIC_FEAT_MAS0_TO_SPRG7
;
228 case KVM_HCALL_TOKEN(KVM_HC_FEATURES
):
230 #if defined(CONFIG_PPC_BOOK3S) || defined(CONFIG_KVM_E500V2)
231 r2
|= (1 << KVM_FEATURE_MAGIC_PAGE
);
234 /* Second return value is in r4 */
236 case EV_HCALL_TOKEN(EV_IDLE
):
238 kvm_vcpu_block(vcpu
);
239 kvm_clear_request(KVM_REQ_UNHALT
, vcpu
);
242 r
= EV_UNIMPLEMENTED
;
246 kvmppc_set_gpr(vcpu
, 4, r2
);
250 EXPORT_SYMBOL_GPL(kvmppc_kvm_pv
);
252 int kvmppc_sanity_check(struct kvm_vcpu
*vcpu
)
256 /* We have to know what CPU to virtualize */
260 /* PAPR only works with book3s_64 */
261 if ((vcpu
->arch
.cpu_type
!= KVM_CPU_3S_64
) && vcpu
->arch
.papr_enabled
)
264 /* HV KVM can only do PAPR mode for now */
265 if (!vcpu
->arch
.papr_enabled
&& is_kvmppc_hv_enabled(vcpu
->kvm
))
268 #ifdef CONFIG_KVM_BOOKE_HV
269 if (!cpu_has_feature(CPU_FTR_EMB_HV
))
277 return r
? 0 : -EINVAL
;
279 EXPORT_SYMBOL_GPL(kvmppc_sanity_check
);
281 int kvmppc_emulate_mmio(struct kvm_run
*run
, struct kvm_vcpu
*vcpu
)
283 enum emulation_result er
;
286 er
= kvmppc_emulate_loadstore(vcpu
);
289 /* Future optimization: only reload non-volatiles if they were
290 * actually modified. */
296 case EMULATE_DO_MMIO
:
297 run
->exit_reason
= KVM_EXIT_MMIO
;
298 /* We must reload nonvolatiles because "update" load/store
299 * instructions modify register state. */
300 /* Future optimization: only reload non-volatiles if they were
301 * actually modified. */
308 kvmppc_get_last_inst(vcpu
, INST_GENERIC
, &last_inst
);
309 /* XXX Deliver Program interrupt to guest. */
310 pr_emerg("%s: emulation failed (%08x)\n", __func__
, last_inst
);
321 EXPORT_SYMBOL_GPL(kvmppc_emulate_mmio
);
323 int kvmppc_st(struct kvm_vcpu
*vcpu
, ulong
*eaddr
, int size
, void *ptr
,
326 ulong mp_pa
= vcpu
->arch
.magic_page_pa
& KVM_PAM
& PAGE_MASK
;
327 struct kvmppc_pte pte
;
332 if (vcpu
->kvm
->arch
.kvm_ops
&& vcpu
->kvm
->arch
.kvm_ops
->store_to_eaddr
)
333 r
= vcpu
->kvm
->arch
.kvm_ops
->store_to_eaddr(vcpu
, eaddr
, ptr
,
336 if ((!r
) || (r
== -EAGAIN
))
339 r
= kvmppc_xlate(vcpu
, *eaddr
, data
? XLATE_DATA
: XLATE_INST
,
349 /* Magic page override */
350 if (kvmppc_supports_magic_page(vcpu
) && mp_pa
&&
351 ((pte
.raddr
& KVM_PAM
& PAGE_MASK
) == mp_pa
) &&
352 !(kvmppc_get_msr(vcpu
) & MSR_PR
)) {
353 void *magic
= vcpu
->arch
.shared
;
354 magic
+= pte
.eaddr
& 0xfff;
355 memcpy(magic
, ptr
, size
);
359 if (kvm_write_guest(vcpu
->kvm
, pte
.raddr
, ptr
, size
))
360 return EMULATE_DO_MMIO
;
364 EXPORT_SYMBOL_GPL(kvmppc_st
);
366 int kvmppc_ld(struct kvm_vcpu
*vcpu
, ulong
*eaddr
, int size
, void *ptr
,
369 ulong mp_pa
= vcpu
->arch
.magic_page_pa
& KVM_PAM
& PAGE_MASK
;
370 struct kvmppc_pte pte
;
375 if (vcpu
->kvm
->arch
.kvm_ops
&& vcpu
->kvm
->arch
.kvm_ops
->load_from_eaddr
)
376 rc
= vcpu
->kvm
->arch
.kvm_ops
->load_from_eaddr(vcpu
, eaddr
, ptr
,
379 if ((!rc
) || (rc
== -EAGAIN
))
382 rc
= kvmppc_xlate(vcpu
, *eaddr
, data
? XLATE_DATA
: XLATE_INST
,
392 if (!data
&& !pte
.may_execute
)
395 /* Magic page override */
396 if (kvmppc_supports_magic_page(vcpu
) && mp_pa
&&
397 ((pte
.raddr
& KVM_PAM
& PAGE_MASK
) == mp_pa
) &&
398 !(kvmppc_get_msr(vcpu
) & MSR_PR
)) {
399 void *magic
= vcpu
->arch
.shared
;
400 magic
+= pte
.eaddr
& 0xfff;
401 memcpy(ptr
, magic
, size
);
405 if (kvm_read_guest(vcpu
->kvm
, pte
.raddr
, ptr
, size
))
406 return EMULATE_DO_MMIO
;
410 EXPORT_SYMBOL_GPL(kvmppc_ld
);
412 int kvm_arch_hardware_enable(void)
417 int kvm_arch_hardware_setup(void)
422 int kvm_arch_check_processor_compat(void)
424 return kvmppc_core_check_processor_compat();
427 int kvm_arch_init_vm(struct kvm
*kvm
, unsigned long type
)
429 struct kvmppc_ops
*kvm_ops
= NULL
;
431 * if we have both HV and PR enabled, default is HV
435 kvm_ops
= kvmppc_hv_ops
;
437 kvm_ops
= kvmppc_pr_ops
;
440 } else if (type
== KVM_VM_PPC_HV
) {
443 kvm_ops
= kvmppc_hv_ops
;
444 } else if (type
== KVM_VM_PPC_PR
) {
447 kvm_ops
= kvmppc_pr_ops
;
451 if (kvm_ops
->owner
&& !try_module_get(kvm_ops
->owner
))
454 kvm
->arch
.kvm_ops
= kvm_ops
;
455 return kvmppc_core_init_vm(kvm
);
460 void kvm_arch_destroy_vm(struct kvm
*kvm
)
463 struct kvm_vcpu
*vcpu
;
465 #ifdef CONFIG_KVM_XICS
467 * We call kick_all_cpus_sync() to ensure that all
468 * CPUs have executed any pending IPIs before we
469 * continue and free VCPUs structures below.
471 if (is_kvmppc_hv_enabled(kvm
))
472 kick_all_cpus_sync();
475 kvm_for_each_vcpu(i
, vcpu
, kvm
)
476 kvm_arch_vcpu_free(vcpu
);
478 mutex_lock(&kvm
->lock
);
479 for (i
= 0; i
< atomic_read(&kvm
->online_vcpus
); i
++)
480 kvm
->vcpus
[i
] = NULL
;
482 atomic_set(&kvm
->online_vcpus
, 0);
484 kvmppc_core_destroy_vm(kvm
);
486 mutex_unlock(&kvm
->lock
);
488 /* drop the module reference */
489 module_put(kvm
->arch
.kvm_ops
->owner
);
492 int kvm_vm_ioctl_check_extension(struct kvm
*kvm
, long ext
)
495 /* Assume we're using HV mode when the HV module is loaded */
496 int hv_enabled
= kvmppc_hv_ops
? 1 : 0;
500 * Hooray - we know which VM type we're running on. Depend on
501 * that rather than the guess above.
503 hv_enabled
= is_kvmppc_hv_enabled(kvm
);
508 case KVM_CAP_PPC_BOOKE_SREGS
:
509 case KVM_CAP_PPC_BOOKE_WATCHDOG
:
510 case KVM_CAP_PPC_EPR
:
512 case KVM_CAP_PPC_SEGSTATE
:
513 case KVM_CAP_PPC_HIOR
:
514 case KVM_CAP_PPC_PAPR
:
516 case KVM_CAP_PPC_UNSET_IRQ
:
517 case KVM_CAP_PPC_IRQ_LEVEL
:
518 case KVM_CAP_ENABLE_CAP
:
519 case KVM_CAP_ONE_REG
:
520 case KVM_CAP_IOEVENTFD
:
521 case KVM_CAP_DEVICE_CTRL
:
522 case KVM_CAP_IMMEDIATE_EXIT
:
525 case KVM_CAP_PPC_PAIRED_SINGLES
:
526 case KVM_CAP_PPC_OSI
:
527 case KVM_CAP_PPC_GET_PVINFO
:
528 #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC)
531 /* We support this only for PR */
534 #ifdef CONFIG_KVM_MPIC
535 case KVM_CAP_IRQ_MPIC
:
540 #ifdef CONFIG_PPC_BOOK3S_64
541 case KVM_CAP_SPAPR_TCE
:
542 case KVM_CAP_SPAPR_TCE_64
:
545 case KVM_CAP_SPAPR_TCE_VFIO
:
546 r
= !!cpu_has_feature(CPU_FTR_HVMODE
);
548 case KVM_CAP_PPC_RTAS
:
549 case KVM_CAP_PPC_FIXUP_HCALL
:
550 case KVM_CAP_PPC_ENABLE_HCALL
:
551 #ifdef CONFIG_KVM_XICS
552 case KVM_CAP_IRQ_XICS
:
554 case KVM_CAP_PPC_GET_CPU_CHAR
:
557 #ifdef CONFIG_KVM_XIVE
558 case KVM_CAP_PPC_IRQ_XIVE
:
560 * We need XIVE to be enabled on the platform (implies
561 * a POWER9 processor) and the PowerNV platform, as
562 * nested is not yet supported.
564 r
= xive_enabled() && !!cpu_has_feature(CPU_FTR_HVMODE
);
568 case KVM_CAP_PPC_ALLOC_HTAB
:
571 #endif /* CONFIG_PPC_BOOK3S_64 */
572 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
573 case KVM_CAP_PPC_SMT
:
576 if (kvm
->arch
.emul_smt_mode
> 1)
577 r
= kvm
->arch
.emul_smt_mode
;
579 r
= kvm
->arch
.smt_mode
;
580 } else if (hv_enabled
) {
581 if (cpu_has_feature(CPU_FTR_ARCH_300
))
584 r
= threads_per_subcore
;
587 case KVM_CAP_PPC_SMT_POSSIBLE
:
590 if (!cpu_has_feature(CPU_FTR_ARCH_300
))
591 r
= ((threads_per_subcore
<< 1) - 1);
593 /* P9 can emulate dbells, so allow any mode */
597 case KVM_CAP_PPC_RMA
:
600 case KVM_CAP_PPC_HWRNG
:
601 r
= kvmppc_hwrng_present();
603 case KVM_CAP_PPC_MMU_RADIX
:
604 r
= !!(hv_enabled
&& radix_enabled());
606 case KVM_CAP_PPC_MMU_HASH_V3
:
607 r
= !!(hv_enabled
&& cpu_has_feature(CPU_FTR_ARCH_300
) &&
608 cpu_has_feature(CPU_FTR_HVMODE
));
610 case KVM_CAP_PPC_NESTED_HV
:
611 r
= !!(hv_enabled
&& kvmppc_hv_ops
->enable_nested
&&
612 !kvmppc_hv_ops
->enable_nested(NULL
));
615 case KVM_CAP_SYNC_MMU
:
616 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
618 #elif defined(KVM_ARCH_WANT_MMU_NOTIFIER)
624 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
625 case KVM_CAP_PPC_HTAB_FD
:
629 case KVM_CAP_NR_VCPUS
:
631 * Recommending a number of CPUs is somewhat arbitrary; we
632 * return the number of present CPUs for -HV (since a host
633 * will have secondary threads "offline"), and for other KVM
634 * implementations just count online CPUs.
637 r
= num_present_cpus();
639 r
= num_online_cpus();
641 case KVM_CAP_MAX_VCPUS
:
644 case KVM_CAP_MAX_VCPU_ID
:
647 #ifdef CONFIG_PPC_BOOK3S_64
648 case KVM_CAP_PPC_GET_SMMU_INFO
:
651 case KVM_CAP_SPAPR_MULTITCE
:
654 case KVM_CAP_SPAPR_RESIZE_HPT
:
658 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
659 case KVM_CAP_PPC_FWNMI
:
663 #ifdef CONFIG_PPC_TRANSACTIONAL_MEM
664 case KVM_CAP_PPC_HTM
:
665 r
= !!(cur_cpu_spec
->cpu_user_features2
& PPC_FEATURE2_HTM
) ||
666 (hv_enabled
&& cpu_has_feature(CPU_FTR_P9_TM_HV_ASSIST
));
677 long kvm_arch_dev_ioctl(struct file
*filp
,
678 unsigned int ioctl
, unsigned long arg
)
683 void kvm_arch_free_memslot(struct kvm
*kvm
, struct kvm_memory_slot
*free
,
684 struct kvm_memory_slot
*dont
)
686 kvmppc_core_free_memslot(kvm
, free
, dont
);
689 int kvm_arch_create_memslot(struct kvm
*kvm
, struct kvm_memory_slot
*slot
,
690 unsigned long npages
)
692 return kvmppc_core_create_memslot(kvm
, slot
, npages
);
695 int kvm_arch_prepare_memory_region(struct kvm
*kvm
,
696 struct kvm_memory_slot
*memslot
,
697 const struct kvm_userspace_memory_region
*mem
,
698 enum kvm_mr_change change
)
700 return kvmppc_core_prepare_memory_region(kvm
, memslot
, mem
);
703 void kvm_arch_commit_memory_region(struct kvm
*kvm
,
704 const struct kvm_userspace_memory_region
*mem
,
705 const struct kvm_memory_slot
*old
,
706 const struct kvm_memory_slot
*new,
707 enum kvm_mr_change change
)
709 kvmppc_core_commit_memory_region(kvm
, mem
, old
, new, change
);
712 void kvm_arch_flush_shadow_memslot(struct kvm
*kvm
,
713 struct kvm_memory_slot
*slot
)
715 kvmppc_core_flush_memslot(kvm
, slot
);
718 struct kvm_vcpu
*kvm_arch_vcpu_create(struct kvm
*kvm
, unsigned int id
)
720 struct kvm_vcpu
*vcpu
;
721 vcpu
= kvmppc_core_vcpu_create(kvm
, id
);
723 vcpu
->arch
.wqp
= &vcpu
->wq
;
724 kvmppc_create_vcpu_debugfs(vcpu
, id
);
729 void kvm_arch_vcpu_postcreate(struct kvm_vcpu
*vcpu
)
733 void kvm_arch_vcpu_free(struct kvm_vcpu
*vcpu
)
735 /* Make sure we're not using the vcpu anymore */
736 hrtimer_cancel(&vcpu
->arch
.dec_timer
);
738 kvmppc_remove_vcpu_debugfs(vcpu
);
740 switch (vcpu
->arch
.irq_type
) {
741 case KVMPPC_IRQ_MPIC
:
742 kvmppc_mpic_disconnect_vcpu(vcpu
->arch
.mpic
, vcpu
);
744 case KVMPPC_IRQ_XICS
:
746 kvmppc_xive_cleanup_vcpu(vcpu
);
748 kvmppc_xics_free_icp(vcpu
);
750 case KVMPPC_IRQ_XIVE
:
751 kvmppc_xive_native_cleanup_vcpu(vcpu
);
755 kvmppc_core_vcpu_free(vcpu
);
758 void kvm_arch_vcpu_destroy(struct kvm_vcpu
*vcpu
)
760 kvm_arch_vcpu_free(vcpu
);
763 int kvm_cpu_has_pending_timer(struct kvm_vcpu
*vcpu
)
765 return kvmppc_core_pending_dec(vcpu
);
768 static enum hrtimer_restart
kvmppc_decrementer_wakeup(struct hrtimer
*timer
)
770 struct kvm_vcpu
*vcpu
;
772 vcpu
= container_of(timer
, struct kvm_vcpu
, arch
.dec_timer
);
773 kvmppc_decrementer_func(vcpu
);
775 return HRTIMER_NORESTART
;
778 int kvm_arch_vcpu_init(struct kvm_vcpu
*vcpu
)
782 hrtimer_init(&vcpu
->arch
.dec_timer
, CLOCK_REALTIME
, HRTIMER_MODE_ABS
);
783 vcpu
->arch
.dec_timer
.function
= kvmppc_decrementer_wakeup
;
784 vcpu
->arch
.dec_expires
= get_tb();
786 #ifdef CONFIG_KVM_EXIT_TIMING
787 mutex_init(&vcpu
->arch
.exit_timing_lock
);
789 ret
= kvmppc_subarch_vcpu_init(vcpu
);
793 void kvm_arch_vcpu_uninit(struct kvm_vcpu
*vcpu
)
795 kvmppc_mmu_destroy(vcpu
);
796 kvmppc_subarch_vcpu_uninit(vcpu
);
799 void kvm_arch_vcpu_load(struct kvm_vcpu
*vcpu
, int cpu
)
803 * vrsave (formerly usprg0) isn't used by Linux, but may
804 * be used by the guest.
806 * On non-booke this is associated with Altivec and
807 * is handled by code in book3s.c.
809 mtspr(SPRN_VRSAVE
, vcpu
->arch
.vrsave
);
811 kvmppc_core_vcpu_load(vcpu
, cpu
);
814 void kvm_arch_vcpu_put(struct kvm_vcpu
*vcpu
)
816 kvmppc_core_vcpu_put(vcpu
);
818 vcpu
->arch
.vrsave
= mfspr(SPRN_VRSAVE
);
823 * irq_bypass_add_producer and irq_bypass_del_producer are only
824 * useful if the architecture supports PCI passthrough.
825 * irq_bypass_stop and irq_bypass_start are not needed and so
826 * kvm_ops are not defined for them.
828 bool kvm_arch_has_irq_bypass(void)
830 return ((kvmppc_hv_ops
&& kvmppc_hv_ops
->irq_bypass_add_producer
) ||
831 (kvmppc_pr_ops
&& kvmppc_pr_ops
->irq_bypass_add_producer
));
834 int kvm_arch_irq_bypass_add_producer(struct irq_bypass_consumer
*cons
,
835 struct irq_bypass_producer
*prod
)
837 struct kvm_kernel_irqfd
*irqfd
=
838 container_of(cons
, struct kvm_kernel_irqfd
, consumer
);
839 struct kvm
*kvm
= irqfd
->kvm
;
841 if (kvm
->arch
.kvm_ops
->irq_bypass_add_producer
)
842 return kvm
->arch
.kvm_ops
->irq_bypass_add_producer(cons
, prod
);
847 void kvm_arch_irq_bypass_del_producer(struct irq_bypass_consumer
*cons
,
848 struct irq_bypass_producer
*prod
)
850 struct kvm_kernel_irqfd
*irqfd
=
851 container_of(cons
, struct kvm_kernel_irqfd
, consumer
);
852 struct kvm
*kvm
= irqfd
->kvm
;
854 if (kvm
->arch
.kvm_ops
->irq_bypass_del_producer
)
855 kvm
->arch
.kvm_ops
->irq_bypass_del_producer(cons
, prod
);
859 static inline int kvmppc_get_vsr_dword_offset(int index
)
863 if ((index
!= 0) && (index
!= 1))
875 static inline int kvmppc_get_vsr_word_offset(int index
)
879 if ((index
> 3) || (index
< 0))
890 static inline void kvmppc_set_vsr_dword(struct kvm_vcpu
*vcpu
,
893 union kvmppc_one_reg val
;
894 int offset
= kvmppc_get_vsr_dword_offset(vcpu
->arch
.mmio_vsx_offset
);
895 int index
= vcpu
->arch
.io_gpr
& KVM_MMIO_REG_MASK
;
901 val
.vval
= VCPU_VSX_VR(vcpu
, index
- 32);
902 val
.vsxval
[offset
] = gpr
;
903 VCPU_VSX_VR(vcpu
, index
- 32) = val
.vval
;
905 VCPU_VSX_FPR(vcpu
, index
, offset
) = gpr
;
909 static inline void kvmppc_set_vsr_dword_dump(struct kvm_vcpu
*vcpu
,
912 union kvmppc_one_reg val
;
913 int index
= vcpu
->arch
.io_gpr
& KVM_MMIO_REG_MASK
;
916 val
.vval
= VCPU_VSX_VR(vcpu
, index
- 32);
919 VCPU_VSX_VR(vcpu
, index
- 32) = val
.vval
;
921 VCPU_VSX_FPR(vcpu
, index
, 0) = gpr
;
922 VCPU_VSX_FPR(vcpu
, index
, 1) = gpr
;
926 static inline void kvmppc_set_vsr_word_dump(struct kvm_vcpu
*vcpu
,
929 union kvmppc_one_reg val
;
930 int index
= vcpu
->arch
.io_gpr
& KVM_MMIO_REG_MASK
;
933 val
.vsx32val
[0] = gpr
;
934 val
.vsx32val
[1] = gpr
;
935 val
.vsx32val
[2] = gpr
;
936 val
.vsx32val
[3] = gpr
;
937 VCPU_VSX_VR(vcpu
, index
- 32) = val
.vval
;
939 val
.vsx32val
[0] = gpr
;
940 val
.vsx32val
[1] = gpr
;
941 VCPU_VSX_FPR(vcpu
, index
, 0) = val
.vsxval
[0];
942 VCPU_VSX_FPR(vcpu
, index
, 1) = val
.vsxval
[0];
946 static inline void kvmppc_set_vsr_word(struct kvm_vcpu
*vcpu
,
949 union kvmppc_one_reg val
;
950 int offset
= kvmppc_get_vsr_word_offset(vcpu
->arch
.mmio_vsx_offset
);
951 int index
= vcpu
->arch
.io_gpr
& KVM_MMIO_REG_MASK
;
952 int dword_offset
, word_offset
;
958 val
.vval
= VCPU_VSX_VR(vcpu
, index
- 32);
959 val
.vsx32val
[offset
] = gpr32
;
960 VCPU_VSX_VR(vcpu
, index
- 32) = val
.vval
;
962 dword_offset
= offset
/ 2;
963 word_offset
= offset
% 2;
964 val
.vsxval
[0] = VCPU_VSX_FPR(vcpu
, index
, dword_offset
);
965 val
.vsx32val
[word_offset
] = gpr32
;
966 VCPU_VSX_FPR(vcpu
, index
, dword_offset
) = val
.vsxval
[0];
969 #endif /* CONFIG_VSX */
971 #ifdef CONFIG_ALTIVEC
972 static inline int kvmppc_get_vmx_offset_generic(struct kvm_vcpu
*vcpu
,
973 int index
, int element_size
)
976 int elts
= sizeof(vector128
)/element_size
;
978 if ((index
< 0) || (index
>= elts
))
981 if (kvmppc_need_byteswap(vcpu
))
982 offset
= elts
- index
- 1;
989 static inline int kvmppc_get_vmx_dword_offset(struct kvm_vcpu
*vcpu
,
992 return kvmppc_get_vmx_offset_generic(vcpu
, index
, 8);
995 static inline int kvmppc_get_vmx_word_offset(struct kvm_vcpu
*vcpu
,
998 return kvmppc_get_vmx_offset_generic(vcpu
, index
, 4);
1001 static inline int kvmppc_get_vmx_hword_offset(struct kvm_vcpu
*vcpu
,
1004 return kvmppc_get_vmx_offset_generic(vcpu
, index
, 2);
1007 static inline int kvmppc_get_vmx_byte_offset(struct kvm_vcpu
*vcpu
,
1010 return kvmppc_get_vmx_offset_generic(vcpu
, index
, 1);
1014 static inline void kvmppc_set_vmx_dword(struct kvm_vcpu
*vcpu
,
1017 union kvmppc_one_reg val
;
1018 int offset
= kvmppc_get_vmx_dword_offset(vcpu
,
1019 vcpu
->arch
.mmio_vmx_offset
);
1020 int index
= vcpu
->arch
.io_gpr
& KVM_MMIO_REG_MASK
;
1025 val
.vval
= VCPU_VSX_VR(vcpu
, index
);
1026 val
.vsxval
[offset
] = gpr
;
1027 VCPU_VSX_VR(vcpu
, index
) = val
.vval
;
1030 static inline void kvmppc_set_vmx_word(struct kvm_vcpu
*vcpu
,
1033 union kvmppc_one_reg val
;
1034 int offset
= kvmppc_get_vmx_word_offset(vcpu
,
1035 vcpu
->arch
.mmio_vmx_offset
);
1036 int index
= vcpu
->arch
.io_gpr
& KVM_MMIO_REG_MASK
;
1041 val
.vval
= VCPU_VSX_VR(vcpu
, index
);
1042 val
.vsx32val
[offset
] = gpr32
;
1043 VCPU_VSX_VR(vcpu
, index
) = val
.vval
;
1046 static inline void kvmppc_set_vmx_hword(struct kvm_vcpu
*vcpu
,
1049 union kvmppc_one_reg val
;
1050 int offset
= kvmppc_get_vmx_hword_offset(vcpu
,
1051 vcpu
->arch
.mmio_vmx_offset
);
1052 int index
= vcpu
->arch
.io_gpr
& KVM_MMIO_REG_MASK
;
1057 val
.vval
= VCPU_VSX_VR(vcpu
, index
);
1058 val
.vsx16val
[offset
] = gpr16
;
1059 VCPU_VSX_VR(vcpu
, index
) = val
.vval
;
1062 static inline void kvmppc_set_vmx_byte(struct kvm_vcpu
*vcpu
,
1065 union kvmppc_one_reg val
;
1066 int offset
= kvmppc_get_vmx_byte_offset(vcpu
,
1067 vcpu
->arch
.mmio_vmx_offset
);
1068 int index
= vcpu
->arch
.io_gpr
& KVM_MMIO_REG_MASK
;
1073 val
.vval
= VCPU_VSX_VR(vcpu
, index
);
1074 val
.vsx8val
[offset
] = gpr8
;
1075 VCPU_VSX_VR(vcpu
, index
) = val
.vval
;
1077 #endif /* CONFIG_ALTIVEC */
1079 #ifdef CONFIG_PPC_FPU
1080 static inline u64
sp_to_dp(u32 fprs
)
1086 asm ("lfs%U1%X1 0,%1; stfd%U0%X0 0,%0" : "=m" (fprd
) : "m" (fprs
)
1092 static inline u32
dp_to_sp(u64 fprd
)
1098 asm ("lfd%U1%X1 0,%1; stfs%U0%X0 0,%0" : "=m" (fprs
) : "m" (fprd
)
1105 #define sp_to_dp(x) (x)
1106 #define dp_to_sp(x) (x)
1107 #endif /* CONFIG_PPC_FPU */
1109 static void kvmppc_complete_mmio_load(struct kvm_vcpu
*vcpu
,
1110 struct kvm_run
*run
)
1112 u64
uninitialized_var(gpr
);
1114 if (run
->mmio
.len
> sizeof(gpr
)) {
1115 printk(KERN_ERR
"bad MMIO length: %d\n", run
->mmio
.len
);
1119 if (!vcpu
->arch
.mmio_host_swabbed
) {
1120 switch (run
->mmio
.len
) {
1121 case 8: gpr
= *(u64
*)run
->mmio
.data
; break;
1122 case 4: gpr
= *(u32
*)run
->mmio
.data
; break;
1123 case 2: gpr
= *(u16
*)run
->mmio
.data
; break;
1124 case 1: gpr
= *(u8
*)run
->mmio
.data
; break;
1127 switch (run
->mmio
.len
) {
1128 case 8: gpr
= swab64(*(u64
*)run
->mmio
.data
); break;
1129 case 4: gpr
= swab32(*(u32
*)run
->mmio
.data
); break;
1130 case 2: gpr
= swab16(*(u16
*)run
->mmio
.data
); break;
1131 case 1: gpr
= *(u8
*)run
->mmio
.data
; break;
1135 /* conversion between single and double precision */
1136 if ((vcpu
->arch
.mmio_sp64_extend
) && (run
->mmio
.len
== 4))
1137 gpr
= sp_to_dp(gpr
);
1139 if (vcpu
->arch
.mmio_sign_extend
) {
1140 switch (run
->mmio
.len
) {
1143 gpr
= (s64
)(s32
)gpr
;
1147 gpr
= (s64
)(s16
)gpr
;
1155 switch (vcpu
->arch
.io_gpr
& KVM_MMIO_REG_EXT_MASK
) {
1156 case KVM_MMIO_REG_GPR
:
1157 kvmppc_set_gpr(vcpu
, vcpu
->arch
.io_gpr
, gpr
);
1159 case KVM_MMIO_REG_FPR
:
1160 if (vcpu
->kvm
->arch
.kvm_ops
->giveup_ext
)
1161 vcpu
->kvm
->arch
.kvm_ops
->giveup_ext(vcpu
, MSR_FP
);
1163 VCPU_FPR(vcpu
, vcpu
->arch
.io_gpr
& KVM_MMIO_REG_MASK
) = gpr
;
1165 #ifdef CONFIG_PPC_BOOK3S
1166 case KVM_MMIO_REG_QPR
:
1167 vcpu
->arch
.qpr
[vcpu
->arch
.io_gpr
& KVM_MMIO_REG_MASK
] = gpr
;
1169 case KVM_MMIO_REG_FQPR
:
1170 VCPU_FPR(vcpu
, vcpu
->arch
.io_gpr
& KVM_MMIO_REG_MASK
) = gpr
;
1171 vcpu
->arch
.qpr
[vcpu
->arch
.io_gpr
& KVM_MMIO_REG_MASK
] = gpr
;
1175 case KVM_MMIO_REG_VSX
:
1176 if (vcpu
->kvm
->arch
.kvm_ops
->giveup_ext
)
1177 vcpu
->kvm
->arch
.kvm_ops
->giveup_ext(vcpu
, MSR_VSX
);
1179 if (vcpu
->arch
.mmio_copy_type
== KVMPPC_VSX_COPY_DWORD
)
1180 kvmppc_set_vsr_dword(vcpu
, gpr
);
1181 else if (vcpu
->arch
.mmio_copy_type
== KVMPPC_VSX_COPY_WORD
)
1182 kvmppc_set_vsr_word(vcpu
, gpr
);
1183 else if (vcpu
->arch
.mmio_copy_type
==
1184 KVMPPC_VSX_COPY_DWORD_LOAD_DUMP
)
1185 kvmppc_set_vsr_dword_dump(vcpu
, gpr
);
1186 else if (vcpu
->arch
.mmio_copy_type
==
1187 KVMPPC_VSX_COPY_WORD_LOAD_DUMP
)
1188 kvmppc_set_vsr_word_dump(vcpu
, gpr
);
1191 #ifdef CONFIG_ALTIVEC
1192 case KVM_MMIO_REG_VMX
:
1193 if (vcpu
->kvm
->arch
.kvm_ops
->giveup_ext
)
1194 vcpu
->kvm
->arch
.kvm_ops
->giveup_ext(vcpu
, MSR_VEC
);
1196 if (vcpu
->arch
.mmio_copy_type
== KVMPPC_VMX_COPY_DWORD
)
1197 kvmppc_set_vmx_dword(vcpu
, gpr
);
1198 else if (vcpu
->arch
.mmio_copy_type
== KVMPPC_VMX_COPY_WORD
)
1199 kvmppc_set_vmx_word(vcpu
, gpr
);
1200 else if (vcpu
->arch
.mmio_copy_type
==
1201 KVMPPC_VMX_COPY_HWORD
)
1202 kvmppc_set_vmx_hword(vcpu
, gpr
);
1203 else if (vcpu
->arch
.mmio_copy_type
==
1204 KVMPPC_VMX_COPY_BYTE
)
1205 kvmppc_set_vmx_byte(vcpu
, gpr
);
1208 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
1209 case KVM_MMIO_REG_NESTED_GPR
:
1210 if (kvmppc_need_byteswap(vcpu
))
1212 kvm_vcpu_write_guest(vcpu
, vcpu
->arch
.nested_io_gpr
, &gpr
,
1221 static int __kvmppc_handle_load(struct kvm_run
*run
, struct kvm_vcpu
*vcpu
,
1222 unsigned int rt
, unsigned int bytes
,
1223 int is_default_endian
, int sign_extend
)
1228 /* Pity C doesn't have a logical XOR operator */
1229 if (kvmppc_need_byteswap(vcpu
)) {
1230 host_swabbed
= is_default_endian
;
1232 host_swabbed
= !is_default_endian
;
1235 if (bytes
> sizeof(run
->mmio
.data
)) {
1236 printk(KERN_ERR
"%s: bad MMIO length: %d\n", __func__
,
1240 run
->mmio
.phys_addr
= vcpu
->arch
.paddr_accessed
;
1241 run
->mmio
.len
= bytes
;
1242 run
->mmio
.is_write
= 0;
1244 vcpu
->arch
.io_gpr
= rt
;
1245 vcpu
->arch
.mmio_host_swabbed
= host_swabbed
;
1246 vcpu
->mmio_needed
= 1;
1247 vcpu
->mmio_is_write
= 0;
1248 vcpu
->arch
.mmio_sign_extend
= sign_extend
;
1250 idx
= srcu_read_lock(&vcpu
->kvm
->srcu
);
1252 ret
= kvm_io_bus_read(vcpu
, KVM_MMIO_BUS
, run
->mmio
.phys_addr
,
1253 bytes
, &run
->mmio
.data
);
1255 srcu_read_unlock(&vcpu
->kvm
->srcu
, idx
);
1258 kvmppc_complete_mmio_load(vcpu
, run
);
1259 vcpu
->mmio_needed
= 0;
1260 return EMULATE_DONE
;
1263 return EMULATE_DO_MMIO
;
1266 int kvmppc_handle_load(struct kvm_run
*run
, struct kvm_vcpu
*vcpu
,
1267 unsigned int rt
, unsigned int bytes
,
1268 int is_default_endian
)
1270 return __kvmppc_handle_load(run
, vcpu
, rt
, bytes
, is_default_endian
, 0);
1272 EXPORT_SYMBOL_GPL(kvmppc_handle_load
);
1274 /* Same as above, but sign extends */
1275 int kvmppc_handle_loads(struct kvm_run
*run
, struct kvm_vcpu
*vcpu
,
1276 unsigned int rt
, unsigned int bytes
,
1277 int is_default_endian
)
1279 return __kvmppc_handle_load(run
, vcpu
, rt
, bytes
, is_default_endian
, 1);
1283 int kvmppc_handle_vsx_load(struct kvm_run
*run
, struct kvm_vcpu
*vcpu
,
1284 unsigned int rt
, unsigned int bytes
,
1285 int is_default_endian
, int mmio_sign_extend
)
1287 enum emulation_result emulated
= EMULATE_DONE
;
1289 /* Currently, mmio_vsx_copy_nums only allowed to be 4 or less */
1290 if (vcpu
->arch
.mmio_vsx_copy_nums
> 4)
1291 return EMULATE_FAIL
;
1293 while (vcpu
->arch
.mmio_vsx_copy_nums
) {
1294 emulated
= __kvmppc_handle_load(run
, vcpu
, rt
, bytes
,
1295 is_default_endian
, mmio_sign_extend
);
1297 if (emulated
!= EMULATE_DONE
)
1300 vcpu
->arch
.paddr_accessed
+= run
->mmio
.len
;
1302 vcpu
->arch
.mmio_vsx_copy_nums
--;
1303 vcpu
->arch
.mmio_vsx_offset
++;
1307 #endif /* CONFIG_VSX */
1309 int kvmppc_handle_store(struct kvm_run
*run
, struct kvm_vcpu
*vcpu
,
1310 u64 val
, unsigned int bytes
, int is_default_endian
)
1312 void *data
= run
->mmio
.data
;
1316 /* Pity C doesn't have a logical XOR operator */
1317 if (kvmppc_need_byteswap(vcpu
)) {
1318 host_swabbed
= is_default_endian
;
1320 host_swabbed
= !is_default_endian
;
1323 if (bytes
> sizeof(run
->mmio
.data
)) {
1324 printk(KERN_ERR
"%s: bad MMIO length: %d\n", __func__
,
1328 run
->mmio
.phys_addr
= vcpu
->arch
.paddr_accessed
;
1329 run
->mmio
.len
= bytes
;
1330 run
->mmio
.is_write
= 1;
1331 vcpu
->mmio_needed
= 1;
1332 vcpu
->mmio_is_write
= 1;
1334 if ((vcpu
->arch
.mmio_sp64_extend
) && (bytes
== 4))
1335 val
= dp_to_sp(val
);
1337 /* Store the value at the lowest bytes in 'data'. */
1338 if (!host_swabbed
) {
1340 case 8: *(u64
*)data
= val
; break;
1341 case 4: *(u32
*)data
= val
; break;
1342 case 2: *(u16
*)data
= val
; break;
1343 case 1: *(u8
*)data
= val
; break;
1347 case 8: *(u64
*)data
= swab64(val
); break;
1348 case 4: *(u32
*)data
= swab32(val
); break;
1349 case 2: *(u16
*)data
= swab16(val
); break;
1350 case 1: *(u8
*)data
= val
; break;
1354 idx
= srcu_read_lock(&vcpu
->kvm
->srcu
);
1356 ret
= kvm_io_bus_write(vcpu
, KVM_MMIO_BUS
, run
->mmio
.phys_addr
,
1357 bytes
, &run
->mmio
.data
);
1359 srcu_read_unlock(&vcpu
->kvm
->srcu
, idx
);
1362 vcpu
->mmio_needed
= 0;
1363 return EMULATE_DONE
;
1366 return EMULATE_DO_MMIO
;
1368 EXPORT_SYMBOL_GPL(kvmppc_handle_store
);
1371 static inline int kvmppc_get_vsr_data(struct kvm_vcpu
*vcpu
, int rs
, u64
*val
)
1373 u32 dword_offset
, word_offset
;
1374 union kvmppc_one_reg reg
;
1376 int copy_type
= vcpu
->arch
.mmio_copy_type
;
1379 switch (copy_type
) {
1380 case KVMPPC_VSX_COPY_DWORD
:
1382 kvmppc_get_vsr_dword_offset(vcpu
->arch
.mmio_vsx_offset
);
1384 if (vsx_offset
== -1) {
1390 *val
= VCPU_VSX_FPR(vcpu
, rs
, vsx_offset
);
1392 reg
.vval
= VCPU_VSX_VR(vcpu
, rs
- 32);
1393 *val
= reg
.vsxval
[vsx_offset
];
1397 case KVMPPC_VSX_COPY_WORD
:
1399 kvmppc_get_vsr_word_offset(vcpu
->arch
.mmio_vsx_offset
);
1401 if (vsx_offset
== -1) {
1407 dword_offset
= vsx_offset
/ 2;
1408 word_offset
= vsx_offset
% 2;
1409 reg
.vsxval
[0] = VCPU_VSX_FPR(vcpu
, rs
, dword_offset
);
1410 *val
= reg
.vsx32val
[word_offset
];
1412 reg
.vval
= VCPU_VSX_VR(vcpu
, rs
- 32);
1413 *val
= reg
.vsx32val
[vsx_offset
];
1425 int kvmppc_handle_vsx_store(struct kvm_run
*run
, struct kvm_vcpu
*vcpu
,
1426 int rs
, unsigned int bytes
, int is_default_endian
)
1429 enum emulation_result emulated
= EMULATE_DONE
;
1431 vcpu
->arch
.io_gpr
= rs
;
1433 /* Currently, mmio_vsx_copy_nums only allowed to be 4 or less */
1434 if (vcpu
->arch
.mmio_vsx_copy_nums
> 4)
1435 return EMULATE_FAIL
;
1437 while (vcpu
->arch
.mmio_vsx_copy_nums
) {
1438 if (kvmppc_get_vsr_data(vcpu
, rs
, &val
) == -1)
1439 return EMULATE_FAIL
;
1441 emulated
= kvmppc_handle_store(run
, vcpu
,
1442 val
, bytes
, is_default_endian
);
1444 if (emulated
!= EMULATE_DONE
)
1447 vcpu
->arch
.paddr_accessed
+= run
->mmio
.len
;
1449 vcpu
->arch
.mmio_vsx_copy_nums
--;
1450 vcpu
->arch
.mmio_vsx_offset
++;
1456 static int kvmppc_emulate_mmio_vsx_loadstore(struct kvm_vcpu
*vcpu
,
1457 struct kvm_run
*run
)
1459 enum emulation_result emulated
= EMULATE_FAIL
;
1462 vcpu
->arch
.paddr_accessed
+= run
->mmio
.len
;
1464 if (!vcpu
->mmio_is_write
) {
1465 emulated
= kvmppc_handle_vsx_load(run
, vcpu
, vcpu
->arch
.io_gpr
,
1466 run
->mmio
.len
, 1, vcpu
->arch
.mmio_sign_extend
);
1468 emulated
= kvmppc_handle_vsx_store(run
, vcpu
,
1469 vcpu
->arch
.io_gpr
, run
->mmio
.len
, 1);
1473 case EMULATE_DO_MMIO
:
1474 run
->exit_reason
= KVM_EXIT_MMIO
;
1478 pr_info("KVM: MMIO emulation failed (VSX repeat)\n");
1479 run
->exit_reason
= KVM_EXIT_INTERNAL_ERROR
;
1480 run
->internal
.suberror
= KVM_INTERNAL_ERROR_EMULATION
;
1489 #endif /* CONFIG_VSX */
1491 #ifdef CONFIG_ALTIVEC
1492 int kvmppc_handle_vmx_load(struct kvm_run
*run
, struct kvm_vcpu
*vcpu
,
1493 unsigned int rt
, unsigned int bytes
, int is_default_endian
)
1495 enum emulation_result emulated
= EMULATE_DONE
;
1497 if (vcpu
->arch
.mmio_vsx_copy_nums
> 2)
1498 return EMULATE_FAIL
;
1500 while (vcpu
->arch
.mmio_vmx_copy_nums
) {
1501 emulated
= __kvmppc_handle_load(run
, vcpu
, rt
, bytes
,
1502 is_default_endian
, 0);
1504 if (emulated
!= EMULATE_DONE
)
1507 vcpu
->arch
.paddr_accessed
+= run
->mmio
.len
;
1508 vcpu
->arch
.mmio_vmx_copy_nums
--;
1509 vcpu
->arch
.mmio_vmx_offset
++;
1515 int kvmppc_get_vmx_dword(struct kvm_vcpu
*vcpu
, int index
, u64
*val
)
1517 union kvmppc_one_reg reg
;
1522 kvmppc_get_vmx_dword_offset(vcpu
, vcpu
->arch
.mmio_vmx_offset
);
1524 if (vmx_offset
== -1)
1527 reg
.vval
= VCPU_VSX_VR(vcpu
, index
);
1528 *val
= reg
.vsxval
[vmx_offset
];
1533 int kvmppc_get_vmx_word(struct kvm_vcpu
*vcpu
, int index
, u64
*val
)
1535 union kvmppc_one_reg reg
;
1540 kvmppc_get_vmx_word_offset(vcpu
, vcpu
->arch
.mmio_vmx_offset
);
1542 if (vmx_offset
== -1)
1545 reg
.vval
= VCPU_VSX_VR(vcpu
, index
);
1546 *val
= reg
.vsx32val
[vmx_offset
];
1551 int kvmppc_get_vmx_hword(struct kvm_vcpu
*vcpu
, int index
, u64
*val
)
1553 union kvmppc_one_reg reg
;
1558 kvmppc_get_vmx_hword_offset(vcpu
, vcpu
->arch
.mmio_vmx_offset
);
1560 if (vmx_offset
== -1)
1563 reg
.vval
= VCPU_VSX_VR(vcpu
, index
);
1564 *val
= reg
.vsx16val
[vmx_offset
];
1569 int kvmppc_get_vmx_byte(struct kvm_vcpu
*vcpu
, int index
, u64
*val
)
1571 union kvmppc_one_reg reg
;
1576 kvmppc_get_vmx_byte_offset(vcpu
, vcpu
->arch
.mmio_vmx_offset
);
1578 if (vmx_offset
== -1)
1581 reg
.vval
= VCPU_VSX_VR(vcpu
, index
);
1582 *val
= reg
.vsx8val
[vmx_offset
];
1587 int kvmppc_handle_vmx_store(struct kvm_run
*run
, struct kvm_vcpu
*vcpu
,
1588 unsigned int rs
, unsigned int bytes
, int is_default_endian
)
1591 unsigned int index
= rs
& KVM_MMIO_REG_MASK
;
1592 enum emulation_result emulated
= EMULATE_DONE
;
1594 if (vcpu
->arch
.mmio_vsx_copy_nums
> 2)
1595 return EMULATE_FAIL
;
1597 vcpu
->arch
.io_gpr
= rs
;
1599 while (vcpu
->arch
.mmio_vmx_copy_nums
) {
1600 switch (vcpu
->arch
.mmio_copy_type
) {
1601 case KVMPPC_VMX_COPY_DWORD
:
1602 if (kvmppc_get_vmx_dword(vcpu
, index
, &val
) == -1)
1603 return EMULATE_FAIL
;
1606 case KVMPPC_VMX_COPY_WORD
:
1607 if (kvmppc_get_vmx_word(vcpu
, index
, &val
) == -1)
1608 return EMULATE_FAIL
;
1610 case KVMPPC_VMX_COPY_HWORD
:
1611 if (kvmppc_get_vmx_hword(vcpu
, index
, &val
) == -1)
1612 return EMULATE_FAIL
;
1614 case KVMPPC_VMX_COPY_BYTE
:
1615 if (kvmppc_get_vmx_byte(vcpu
, index
, &val
) == -1)
1616 return EMULATE_FAIL
;
1619 return EMULATE_FAIL
;
1622 emulated
= kvmppc_handle_store(run
, vcpu
, val
, bytes
,
1624 if (emulated
!= EMULATE_DONE
)
1627 vcpu
->arch
.paddr_accessed
+= run
->mmio
.len
;
1628 vcpu
->arch
.mmio_vmx_copy_nums
--;
1629 vcpu
->arch
.mmio_vmx_offset
++;
1635 static int kvmppc_emulate_mmio_vmx_loadstore(struct kvm_vcpu
*vcpu
,
1636 struct kvm_run
*run
)
1638 enum emulation_result emulated
= EMULATE_FAIL
;
1641 vcpu
->arch
.paddr_accessed
+= run
->mmio
.len
;
1643 if (!vcpu
->mmio_is_write
) {
1644 emulated
= kvmppc_handle_vmx_load(run
, vcpu
,
1645 vcpu
->arch
.io_gpr
, run
->mmio
.len
, 1);
1647 emulated
= kvmppc_handle_vmx_store(run
, vcpu
,
1648 vcpu
->arch
.io_gpr
, run
->mmio
.len
, 1);
1652 case EMULATE_DO_MMIO
:
1653 run
->exit_reason
= KVM_EXIT_MMIO
;
1657 pr_info("KVM: MMIO emulation failed (VMX repeat)\n");
1658 run
->exit_reason
= KVM_EXIT_INTERNAL_ERROR
;
1659 run
->internal
.suberror
= KVM_INTERNAL_ERROR_EMULATION
;
1668 #endif /* CONFIG_ALTIVEC */
1670 int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu
*vcpu
, struct kvm_one_reg
*reg
)
1673 union kvmppc_one_reg val
;
1676 size
= one_reg_size(reg
->id
);
1677 if (size
> sizeof(val
))
1680 r
= kvmppc_get_one_reg(vcpu
, reg
->id
, &val
);
1684 #ifdef CONFIG_ALTIVEC
1685 case KVM_REG_PPC_VR0
... KVM_REG_PPC_VR31
:
1686 if (!cpu_has_feature(CPU_FTR_ALTIVEC
)) {
1690 val
.vval
= vcpu
->arch
.vr
.vr
[reg
->id
- KVM_REG_PPC_VR0
];
1692 case KVM_REG_PPC_VSCR
:
1693 if (!cpu_has_feature(CPU_FTR_ALTIVEC
)) {
1697 val
= get_reg_val(reg
->id
, vcpu
->arch
.vr
.vscr
.u
[3]);
1699 case KVM_REG_PPC_VRSAVE
:
1700 val
= get_reg_val(reg
->id
, vcpu
->arch
.vrsave
);
1702 #endif /* CONFIG_ALTIVEC */
1712 if (copy_to_user((char __user
*)(unsigned long)reg
->addr
, &val
, size
))
1718 int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu
*vcpu
, struct kvm_one_reg
*reg
)
1721 union kvmppc_one_reg val
;
1724 size
= one_reg_size(reg
->id
);
1725 if (size
> sizeof(val
))
1728 if (copy_from_user(&val
, (char __user
*)(unsigned long)reg
->addr
, size
))
1731 r
= kvmppc_set_one_reg(vcpu
, reg
->id
, &val
);
1735 #ifdef CONFIG_ALTIVEC
1736 case KVM_REG_PPC_VR0
... KVM_REG_PPC_VR31
:
1737 if (!cpu_has_feature(CPU_FTR_ALTIVEC
)) {
1741 vcpu
->arch
.vr
.vr
[reg
->id
- KVM_REG_PPC_VR0
] = val
.vval
;
1743 case KVM_REG_PPC_VSCR
:
1744 if (!cpu_has_feature(CPU_FTR_ALTIVEC
)) {
1748 vcpu
->arch
.vr
.vscr
.u
[3] = set_reg_val(reg
->id
, val
);
1750 case KVM_REG_PPC_VRSAVE
:
1751 if (!cpu_has_feature(CPU_FTR_ALTIVEC
)) {
1755 vcpu
->arch
.vrsave
= set_reg_val(reg
->id
, val
);
1757 #endif /* CONFIG_ALTIVEC */
1767 int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu
*vcpu
, struct kvm_run
*run
)
1773 if (vcpu
->mmio_needed
) {
1774 vcpu
->mmio_needed
= 0;
1775 if (!vcpu
->mmio_is_write
)
1776 kvmppc_complete_mmio_load(vcpu
, run
);
1778 if (vcpu
->arch
.mmio_vsx_copy_nums
> 0) {
1779 vcpu
->arch
.mmio_vsx_copy_nums
--;
1780 vcpu
->arch
.mmio_vsx_offset
++;
1783 if (vcpu
->arch
.mmio_vsx_copy_nums
> 0) {
1784 r
= kvmppc_emulate_mmio_vsx_loadstore(vcpu
, run
);
1785 if (r
== RESUME_HOST
) {
1786 vcpu
->mmio_needed
= 1;
1791 #ifdef CONFIG_ALTIVEC
1792 if (vcpu
->arch
.mmio_vmx_copy_nums
> 0) {
1793 vcpu
->arch
.mmio_vmx_copy_nums
--;
1794 vcpu
->arch
.mmio_vmx_offset
++;
1797 if (vcpu
->arch
.mmio_vmx_copy_nums
> 0) {
1798 r
= kvmppc_emulate_mmio_vmx_loadstore(vcpu
, run
);
1799 if (r
== RESUME_HOST
) {
1800 vcpu
->mmio_needed
= 1;
1805 } else if (vcpu
->arch
.osi_needed
) {
1806 u64
*gprs
= run
->osi
.gprs
;
1809 for (i
= 0; i
< 32; i
++)
1810 kvmppc_set_gpr(vcpu
, i
, gprs
[i
]);
1811 vcpu
->arch
.osi_needed
= 0;
1812 } else if (vcpu
->arch
.hcall_needed
) {
1815 kvmppc_set_gpr(vcpu
, 3, run
->papr_hcall
.ret
);
1816 for (i
= 0; i
< 9; ++i
)
1817 kvmppc_set_gpr(vcpu
, 4 + i
, run
->papr_hcall
.args
[i
]);
1818 vcpu
->arch
.hcall_needed
= 0;
1820 } else if (vcpu
->arch
.epr_needed
) {
1821 kvmppc_set_epr(vcpu
, run
->epr
.epr
);
1822 vcpu
->arch
.epr_needed
= 0;
1826 kvm_sigset_activate(vcpu
);
1828 if (run
->immediate_exit
)
1831 r
= kvmppc_vcpu_run(run
, vcpu
);
1833 kvm_sigset_deactivate(vcpu
);
1835 #ifdef CONFIG_ALTIVEC
1842 int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu
*vcpu
, struct kvm_interrupt
*irq
)
1844 if (irq
->irq
== KVM_INTERRUPT_UNSET
) {
1845 kvmppc_core_dequeue_external(vcpu
);
1849 kvmppc_core_queue_external(vcpu
, irq
);
1851 kvm_vcpu_kick(vcpu
);
1856 static int kvm_vcpu_ioctl_enable_cap(struct kvm_vcpu
*vcpu
,
1857 struct kvm_enable_cap
*cap
)
1865 case KVM_CAP_PPC_OSI
:
1867 vcpu
->arch
.osi_enabled
= true;
1869 case KVM_CAP_PPC_PAPR
:
1871 vcpu
->arch
.papr_enabled
= true;
1873 case KVM_CAP_PPC_EPR
:
1876 vcpu
->arch
.epr_flags
|= KVMPPC_EPR_USER
;
1878 vcpu
->arch
.epr_flags
&= ~KVMPPC_EPR_USER
;
1881 case KVM_CAP_PPC_BOOKE_WATCHDOG
:
1883 vcpu
->arch
.watchdog_enabled
= true;
1886 #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC)
1887 case KVM_CAP_SW_TLB
: {
1888 struct kvm_config_tlb cfg
;
1889 void __user
*user_ptr
= (void __user
*)(uintptr_t)cap
->args
[0];
1892 if (copy_from_user(&cfg
, user_ptr
, sizeof(cfg
)))
1895 r
= kvm_vcpu_ioctl_config_tlb(vcpu
, &cfg
);
1899 #ifdef CONFIG_KVM_MPIC
1900 case KVM_CAP_IRQ_MPIC
: {
1902 struct kvm_device
*dev
;
1905 f
= fdget(cap
->args
[0]);
1910 dev
= kvm_device_from_filp(f
.file
);
1912 r
= kvmppc_mpic_connect_vcpu(dev
, vcpu
, cap
->args
[1]);
1918 #ifdef CONFIG_KVM_XICS
1919 case KVM_CAP_IRQ_XICS
: {
1921 struct kvm_device
*dev
;
1924 f
= fdget(cap
->args
[0]);
1929 dev
= kvm_device_from_filp(f
.file
);
1932 r
= kvmppc_xive_connect_vcpu(dev
, vcpu
, cap
->args
[1]);
1934 r
= kvmppc_xics_connect_vcpu(dev
, vcpu
, cap
->args
[1]);
1940 #endif /* CONFIG_KVM_XICS */
1941 #ifdef CONFIG_KVM_XIVE
1942 case KVM_CAP_PPC_IRQ_XIVE
: {
1944 struct kvm_device
*dev
;
1947 f
= fdget(cap
->args
[0]);
1952 if (!xive_enabled())
1956 dev
= kvm_device_from_filp(f
.file
);
1958 r
= kvmppc_xive_native_connect_vcpu(dev
, vcpu
,
1964 #endif /* CONFIG_KVM_XIVE */
1965 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
1966 case KVM_CAP_PPC_FWNMI
:
1968 if (!is_kvmppc_hv_enabled(vcpu
->kvm
))
1971 vcpu
->kvm
->arch
.fwnmi_enabled
= true;
1973 #endif /* CONFIG_KVM_BOOK3S_HV_POSSIBLE */
1980 r
= kvmppc_sanity_check(vcpu
);
1985 bool kvm_arch_intc_initialized(struct kvm
*kvm
)
1987 #ifdef CONFIG_KVM_MPIC
1991 #ifdef CONFIG_KVM_XICS
1992 if (kvm
->arch
.xics
|| kvm
->arch
.xive
)
1998 int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu
*vcpu
,
1999 struct kvm_mp_state
*mp_state
)
2004 int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu
*vcpu
,
2005 struct kvm_mp_state
*mp_state
)
2010 long kvm_arch_vcpu_async_ioctl(struct file
*filp
,
2011 unsigned int ioctl
, unsigned long arg
)
2013 struct kvm_vcpu
*vcpu
= filp
->private_data
;
2014 void __user
*argp
= (void __user
*)arg
;
2016 if (ioctl
== KVM_INTERRUPT
) {
2017 struct kvm_interrupt irq
;
2018 if (copy_from_user(&irq
, argp
, sizeof(irq
)))
2020 return kvm_vcpu_ioctl_interrupt(vcpu
, &irq
);
2022 return -ENOIOCTLCMD
;
2025 long kvm_arch_vcpu_ioctl(struct file
*filp
,
2026 unsigned int ioctl
, unsigned long arg
)
2028 struct kvm_vcpu
*vcpu
= filp
->private_data
;
2029 void __user
*argp
= (void __user
*)arg
;
2033 case KVM_ENABLE_CAP
:
2035 struct kvm_enable_cap cap
;
2038 if (copy_from_user(&cap
, argp
, sizeof(cap
)))
2040 r
= kvm_vcpu_ioctl_enable_cap(vcpu
, &cap
);
2045 case KVM_SET_ONE_REG
:
2046 case KVM_GET_ONE_REG
:
2048 struct kvm_one_reg reg
;
2050 if (copy_from_user(®
, argp
, sizeof(reg
)))
2052 if (ioctl
== KVM_SET_ONE_REG
)
2053 r
= kvm_vcpu_ioctl_set_one_reg(vcpu
, ®
);
2055 r
= kvm_vcpu_ioctl_get_one_reg(vcpu
, ®
);
2059 #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC)
2060 case KVM_DIRTY_TLB
: {
2061 struct kvm_dirty_tlb dirty
;
2064 if (copy_from_user(&dirty
, argp
, sizeof(dirty
)))
2066 r
= kvm_vcpu_ioctl_dirty_tlb(vcpu
, &dirty
);
2079 vm_fault_t
kvm_arch_vcpu_fault(struct kvm_vcpu
*vcpu
, struct vm_fault
*vmf
)
2081 return VM_FAULT_SIGBUS
;
2084 static int kvm_vm_ioctl_get_pvinfo(struct kvm_ppc_pvinfo
*pvinfo
)
2086 u32 inst_nop
= 0x60000000;
2087 #ifdef CONFIG_KVM_BOOKE_HV
2088 u32 inst_sc1
= 0x44000022;
2089 pvinfo
->hcall
[0] = cpu_to_be32(inst_sc1
);
2090 pvinfo
->hcall
[1] = cpu_to_be32(inst_nop
);
2091 pvinfo
->hcall
[2] = cpu_to_be32(inst_nop
);
2092 pvinfo
->hcall
[3] = cpu_to_be32(inst_nop
);
2094 u32 inst_lis
= 0x3c000000;
2095 u32 inst_ori
= 0x60000000;
2096 u32 inst_sc
= 0x44000002;
2097 u32 inst_imm_mask
= 0xffff;
2100 * The hypercall to get into KVM from within guest context is as
2103 * lis r0, r0, KVM_SC_MAGIC_R0@h
2104 * ori r0, KVM_SC_MAGIC_R0@l
2108 pvinfo
->hcall
[0] = cpu_to_be32(inst_lis
| ((KVM_SC_MAGIC_R0
>> 16) & inst_imm_mask
));
2109 pvinfo
->hcall
[1] = cpu_to_be32(inst_ori
| (KVM_SC_MAGIC_R0
& inst_imm_mask
));
2110 pvinfo
->hcall
[2] = cpu_to_be32(inst_sc
);
2111 pvinfo
->hcall
[3] = cpu_to_be32(inst_nop
);
2114 pvinfo
->flags
= KVM_PPC_PVINFO_FLAGS_EV_IDLE
;
2119 int kvm_vm_ioctl_irq_line(struct kvm
*kvm
, struct kvm_irq_level
*irq_event
,
2122 if (!irqchip_in_kernel(kvm
))
2125 irq_event
->status
= kvm_set_irq(kvm
, KVM_USERSPACE_IRQ_SOURCE_ID
,
2126 irq_event
->irq
, irq_event
->level
,
2132 int kvm_vm_ioctl_enable_cap(struct kvm
*kvm
,
2133 struct kvm_enable_cap
*cap
)
2141 #ifdef CONFIG_KVM_BOOK3S_64_HANDLER
2142 case KVM_CAP_PPC_ENABLE_HCALL
: {
2143 unsigned long hcall
= cap
->args
[0];
2146 if (hcall
> MAX_HCALL_OPCODE
|| (hcall
& 3) ||
2149 if (!kvmppc_book3s_hcall_implemented(kvm
, hcall
))
2152 set_bit(hcall
/ 4, kvm
->arch
.enabled_hcalls
);
2154 clear_bit(hcall
/ 4, kvm
->arch
.enabled_hcalls
);
2158 case KVM_CAP_PPC_SMT
: {
2159 unsigned long mode
= cap
->args
[0];
2160 unsigned long flags
= cap
->args
[1];
2163 if (kvm
->arch
.kvm_ops
->set_smt_mode
)
2164 r
= kvm
->arch
.kvm_ops
->set_smt_mode(kvm
, mode
, flags
);
2168 case KVM_CAP_PPC_NESTED_HV
:
2170 if (!is_kvmppc_hv_enabled(kvm
) ||
2171 !kvm
->arch
.kvm_ops
->enable_nested
)
2173 r
= kvm
->arch
.kvm_ops
->enable_nested(kvm
);
2184 #ifdef CONFIG_PPC_BOOK3S_64
2186 * These functions check whether the underlying hardware is safe
2187 * against attacks based on observing the effects of speculatively
2188 * executed instructions, and whether it supplies instructions for
2189 * use in workarounds. The information comes from firmware, either
2190 * via the device tree on powernv platforms or from an hcall on
2191 * pseries platforms.
2193 #ifdef CONFIG_PPC_PSERIES
2194 static int pseries_get_cpu_char(struct kvm_ppc_cpu_char
*cp
)
2196 struct h_cpu_char_result c
;
2199 if (!machine_is(pseries
))
2202 rc
= plpar_get_cpu_characteristics(&c
);
2203 if (rc
== H_SUCCESS
) {
2204 cp
->character
= c
.character
;
2205 cp
->behaviour
= c
.behaviour
;
2206 cp
->character_mask
= KVM_PPC_CPU_CHAR_SPEC_BAR_ORI31
|
2207 KVM_PPC_CPU_CHAR_BCCTRL_SERIALISED
|
2208 KVM_PPC_CPU_CHAR_L1D_FLUSH_ORI30
|
2209 KVM_PPC_CPU_CHAR_L1D_FLUSH_TRIG2
|
2210 KVM_PPC_CPU_CHAR_L1D_THREAD_PRIV
|
2211 KVM_PPC_CPU_CHAR_BR_HINT_HONOURED
|
2212 KVM_PPC_CPU_CHAR_MTTRIG_THR_RECONF
|
2213 KVM_PPC_CPU_CHAR_COUNT_CACHE_DIS
|
2214 KVM_PPC_CPU_CHAR_BCCTR_FLUSH_ASSIST
;
2215 cp
->behaviour_mask
= KVM_PPC_CPU_BEHAV_FAVOUR_SECURITY
|
2216 KVM_PPC_CPU_BEHAV_L1D_FLUSH_PR
|
2217 KVM_PPC_CPU_BEHAV_BNDS_CHK_SPEC_BAR
|
2218 KVM_PPC_CPU_BEHAV_FLUSH_COUNT_CACHE
;
2223 static int pseries_get_cpu_char(struct kvm_ppc_cpu_char
*cp
)
2229 static inline bool have_fw_feat(struct device_node
*fw_features
,
2230 const char *state
, const char *name
)
2232 struct device_node
*np
;
2235 np
= of_get_child_by_name(fw_features
, name
);
2237 r
= of_property_read_bool(np
, state
);
2243 static int kvmppc_get_cpu_char(struct kvm_ppc_cpu_char
*cp
)
2245 struct device_node
*np
, *fw_features
;
2248 memset(cp
, 0, sizeof(*cp
));
2249 r
= pseries_get_cpu_char(cp
);
2253 np
= of_find_node_by_name(NULL
, "ibm,opal");
2255 fw_features
= of_get_child_by_name(np
, "fw-features");
2259 if (have_fw_feat(fw_features
, "enabled",
2260 "inst-spec-barrier-ori31,31,0"))
2261 cp
->character
|= KVM_PPC_CPU_CHAR_SPEC_BAR_ORI31
;
2262 if (have_fw_feat(fw_features
, "enabled",
2263 "fw-bcctrl-serialized"))
2264 cp
->character
|= KVM_PPC_CPU_CHAR_BCCTRL_SERIALISED
;
2265 if (have_fw_feat(fw_features
, "enabled",
2266 "inst-l1d-flush-ori30,30,0"))
2267 cp
->character
|= KVM_PPC_CPU_CHAR_L1D_FLUSH_ORI30
;
2268 if (have_fw_feat(fw_features
, "enabled",
2269 "inst-l1d-flush-trig2"))
2270 cp
->character
|= KVM_PPC_CPU_CHAR_L1D_FLUSH_TRIG2
;
2271 if (have_fw_feat(fw_features
, "enabled",
2272 "fw-l1d-thread-split"))
2273 cp
->character
|= KVM_PPC_CPU_CHAR_L1D_THREAD_PRIV
;
2274 if (have_fw_feat(fw_features
, "enabled",
2275 "fw-count-cache-disabled"))
2276 cp
->character
|= KVM_PPC_CPU_CHAR_COUNT_CACHE_DIS
;
2277 if (have_fw_feat(fw_features
, "enabled",
2278 "fw-count-cache-flush-bcctr2,0,0"))
2279 cp
->character
|= KVM_PPC_CPU_CHAR_BCCTR_FLUSH_ASSIST
;
2280 cp
->character_mask
= KVM_PPC_CPU_CHAR_SPEC_BAR_ORI31
|
2281 KVM_PPC_CPU_CHAR_BCCTRL_SERIALISED
|
2282 KVM_PPC_CPU_CHAR_L1D_FLUSH_ORI30
|
2283 KVM_PPC_CPU_CHAR_L1D_FLUSH_TRIG2
|
2284 KVM_PPC_CPU_CHAR_L1D_THREAD_PRIV
|
2285 KVM_PPC_CPU_CHAR_COUNT_CACHE_DIS
|
2286 KVM_PPC_CPU_CHAR_BCCTR_FLUSH_ASSIST
;
2288 if (have_fw_feat(fw_features
, "enabled",
2289 "speculation-policy-favor-security"))
2290 cp
->behaviour
|= KVM_PPC_CPU_BEHAV_FAVOUR_SECURITY
;
2291 if (!have_fw_feat(fw_features
, "disabled",
2292 "needs-l1d-flush-msr-pr-0-to-1"))
2293 cp
->behaviour
|= KVM_PPC_CPU_BEHAV_L1D_FLUSH_PR
;
2294 if (!have_fw_feat(fw_features
, "disabled",
2295 "needs-spec-barrier-for-bound-checks"))
2296 cp
->behaviour
|= KVM_PPC_CPU_BEHAV_BNDS_CHK_SPEC_BAR
;
2297 if (have_fw_feat(fw_features
, "enabled",
2298 "needs-count-cache-flush-on-context-switch"))
2299 cp
->behaviour
|= KVM_PPC_CPU_BEHAV_FLUSH_COUNT_CACHE
;
2300 cp
->behaviour_mask
= KVM_PPC_CPU_BEHAV_FAVOUR_SECURITY
|
2301 KVM_PPC_CPU_BEHAV_L1D_FLUSH_PR
|
2302 KVM_PPC_CPU_BEHAV_BNDS_CHK_SPEC_BAR
|
2303 KVM_PPC_CPU_BEHAV_FLUSH_COUNT_CACHE
;
2305 of_node_put(fw_features
);
2312 long kvm_arch_vm_ioctl(struct file
*filp
,
2313 unsigned int ioctl
, unsigned long arg
)
2315 struct kvm
*kvm __maybe_unused
= filp
->private_data
;
2316 void __user
*argp
= (void __user
*)arg
;
2320 case KVM_PPC_GET_PVINFO
: {
2321 struct kvm_ppc_pvinfo pvinfo
;
2322 memset(&pvinfo
, 0, sizeof(pvinfo
));
2323 r
= kvm_vm_ioctl_get_pvinfo(&pvinfo
);
2324 if (copy_to_user(argp
, &pvinfo
, sizeof(pvinfo
))) {
2331 #ifdef CONFIG_SPAPR_TCE_IOMMU
2332 case KVM_CREATE_SPAPR_TCE_64
: {
2333 struct kvm_create_spapr_tce_64 create_tce_64
;
2336 if (copy_from_user(&create_tce_64
, argp
, sizeof(create_tce_64
)))
2338 if (create_tce_64
.flags
) {
2342 r
= kvm_vm_ioctl_create_spapr_tce(kvm
, &create_tce_64
);
2345 case KVM_CREATE_SPAPR_TCE
: {
2346 struct kvm_create_spapr_tce create_tce
;
2347 struct kvm_create_spapr_tce_64 create_tce_64
;
2350 if (copy_from_user(&create_tce
, argp
, sizeof(create_tce
)))
2353 create_tce_64
.liobn
= create_tce
.liobn
;
2354 create_tce_64
.page_shift
= IOMMU_PAGE_SHIFT_4K
;
2355 create_tce_64
.offset
= 0;
2356 create_tce_64
.size
= create_tce
.window_size
>>
2357 IOMMU_PAGE_SHIFT_4K
;
2358 create_tce_64
.flags
= 0;
2359 r
= kvm_vm_ioctl_create_spapr_tce(kvm
, &create_tce_64
);
2363 #ifdef CONFIG_PPC_BOOK3S_64
2364 case KVM_PPC_GET_SMMU_INFO
: {
2365 struct kvm_ppc_smmu_info info
;
2366 struct kvm
*kvm
= filp
->private_data
;
2368 memset(&info
, 0, sizeof(info
));
2369 r
= kvm
->arch
.kvm_ops
->get_smmu_info(kvm
, &info
);
2370 if (r
>= 0 && copy_to_user(argp
, &info
, sizeof(info
)))
2374 case KVM_PPC_RTAS_DEFINE_TOKEN
: {
2375 struct kvm
*kvm
= filp
->private_data
;
2377 r
= kvm_vm_ioctl_rtas_define_token(kvm
, argp
);
2380 case KVM_PPC_CONFIGURE_V3_MMU
: {
2381 struct kvm
*kvm
= filp
->private_data
;
2382 struct kvm_ppc_mmuv3_cfg cfg
;
2385 if (!kvm
->arch
.kvm_ops
->configure_mmu
)
2388 if (copy_from_user(&cfg
, argp
, sizeof(cfg
)))
2390 r
= kvm
->arch
.kvm_ops
->configure_mmu(kvm
, &cfg
);
2393 case KVM_PPC_GET_RMMU_INFO
: {
2394 struct kvm
*kvm
= filp
->private_data
;
2395 struct kvm_ppc_rmmu_info info
;
2398 if (!kvm
->arch
.kvm_ops
->get_rmmu_info
)
2400 r
= kvm
->arch
.kvm_ops
->get_rmmu_info(kvm
, &info
);
2401 if (r
>= 0 && copy_to_user(argp
, &info
, sizeof(info
)))
2405 case KVM_PPC_GET_CPU_CHAR
: {
2406 struct kvm_ppc_cpu_char cpuchar
;
2408 r
= kvmppc_get_cpu_char(&cpuchar
);
2409 if (r
>= 0 && copy_to_user(argp
, &cpuchar
, sizeof(cpuchar
)))
2414 struct kvm
*kvm
= filp
->private_data
;
2415 r
= kvm
->arch
.kvm_ops
->arch_vm_ioctl(filp
, ioctl
, arg
);
2417 #else /* CONFIG_PPC_BOOK3S_64 */
2426 static unsigned long lpid_inuse
[BITS_TO_LONGS(KVMPPC_NR_LPIDS
)];
2427 static unsigned long nr_lpids
;
2429 long kvmppc_alloc_lpid(void)
2434 lpid
= find_first_zero_bit(lpid_inuse
, KVMPPC_NR_LPIDS
);
2435 if (lpid
>= nr_lpids
) {
2436 pr_err("%s: No LPIDs free\n", __func__
);
2439 } while (test_and_set_bit(lpid
, lpid_inuse
));
2443 EXPORT_SYMBOL_GPL(kvmppc_alloc_lpid
);
2445 void kvmppc_claim_lpid(long lpid
)
2447 set_bit(lpid
, lpid_inuse
);
2449 EXPORT_SYMBOL_GPL(kvmppc_claim_lpid
);
2451 void kvmppc_free_lpid(long lpid
)
2453 clear_bit(lpid
, lpid_inuse
);
2455 EXPORT_SYMBOL_GPL(kvmppc_free_lpid
);
2457 void kvmppc_init_lpid(unsigned long nr_lpids_param
)
2459 nr_lpids
= min_t(unsigned long, KVMPPC_NR_LPIDS
, nr_lpids_param
);
2460 memset(lpid_inuse
, 0, sizeof(lpid_inuse
));
2462 EXPORT_SYMBOL_GPL(kvmppc_init_lpid
);
2464 int kvm_arch_init(void *opaque
)
2469 EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_ppc_instr
);