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>
23 #include <asm/cputable.h>
24 #include <linux/uaccess.h>
25 #include <asm/kvm_ppc.h>
26 #include <asm/cputhreads.h>
27 #include <asm/irqflags.h>
28 #include <asm/iommu.h>
29 #include <asm/switch_to.h>
31 #ifdef CONFIG_PPC_PSERIES
32 #include <asm/hvcall.h>
33 #include <asm/plpar_wrappers.h>
35 #include <asm/ultravisor.h>
36 #include <asm/setup.h>
40 #include "../mm/mmu_decl.h"
42 #define CREATE_TRACE_POINTS
45 struct kvmppc_ops *kvmppc_hv_ops;
46 EXPORT_SYMBOL_GPL(kvmppc_hv_ops);
47 struct kvmppc_ops *kvmppc_pr_ops;
48 EXPORT_SYMBOL_GPL(kvmppc_pr_ops);
51 int kvm_arch_vcpu_runnable(struct kvm_vcpu *v)
53 return !!(v->arch.pending_exceptions) || kvm_request_pending(v);
56 bool kvm_arch_dy_runnable(struct kvm_vcpu *vcpu)
58 return kvm_arch_vcpu_runnable(vcpu);
61 bool kvm_arch_vcpu_in_kernel(struct kvm_vcpu *vcpu)
66 int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu)
72 * Common checks before entering the guest world. Call with interrupts
77 * == 1 if we're ready to go into guest state
78 * <= 0 if we need to go back to the host with return value
80 int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu)
84 WARN_ON(irqs_disabled());
95 if (signal_pending(current)) {
96 kvmppc_account_exit(vcpu, SIGNAL_EXITS);
97 vcpu->run->exit_reason = KVM_EXIT_INTR;
102 vcpu->mode = IN_GUEST_MODE;
105 * Reading vcpu->requests must happen after setting vcpu->mode,
106 * so we don't miss a request because the requester sees
107 * OUTSIDE_GUEST_MODE and assumes we'll be checking requests
108 * before next entering the guest (and thus doesn't IPI).
109 * This also orders the write to mode from any reads
110 * to the page tables done while the VCPU is running.
111 * Please see the comment in kvm_flush_remote_tlbs.
115 if (kvm_request_pending(vcpu)) {
116 /* Make sure we process requests preemptable */
118 trace_kvm_check_requests(vcpu);
119 r = kvmppc_core_check_requests(vcpu);
126 if (kvmppc_core_prepare_to_enter(vcpu)) {
127 /* interrupts got enabled in between, so we
128 are back at square 1 */
132 guest_enter_irqoff();
140 EXPORT_SYMBOL_GPL(kvmppc_prepare_to_enter);
142 #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE)
143 static void kvmppc_swab_shared(struct kvm_vcpu *vcpu)
145 struct kvm_vcpu_arch_shared *shared = vcpu->arch.shared;
148 shared->sprg0 = swab64(shared->sprg0);
149 shared->sprg1 = swab64(shared->sprg1);
150 shared->sprg2 = swab64(shared->sprg2);
151 shared->sprg3 = swab64(shared->sprg3);
152 shared->srr0 = swab64(shared->srr0);
153 shared->srr1 = swab64(shared->srr1);
154 shared->dar = swab64(shared->dar);
155 shared->msr = swab64(shared->msr);
156 shared->dsisr = swab32(shared->dsisr);
157 shared->int_pending = swab32(shared->int_pending);
158 for (i = 0; i < ARRAY_SIZE(shared->sr); i++)
159 shared->sr[i] = swab32(shared->sr[i]);
163 int kvmppc_kvm_pv(struct kvm_vcpu *vcpu)
165 int nr = kvmppc_get_gpr(vcpu, 11);
167 unsigned long __maybe_unused param1 = kvmppc_get_gpr(vcpu, 3);
168 unsigned long __maybe_unused param2 = kvmppc_get_gpr(vcpu, 4);
169 unsigned long __maybe_unused param3 = kvmppc_get_gpr(vcpu, 5);
170 unsigned long __maybe_unused param4 = kvmppc_get_gpr(vcpu, 6);
171 unsigned long r2 = 0;
173 if (!(kvmppc_get_msr(vcpu) & MSR_SF)) {
175 param1 &= 0xffffffff;
176 param2 &= 0xffffffff;
177 param3 &= 0xffffffff;
178 param4 &= 0xffffffff;
182 case KVM_HCALL_TOKEN(KVM_HC_PPC_MAP_MAGIC_PAGE):
184 #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE)
185 /* Book3S can be little endian, find it out here */
186 int shared_big_endian = true;
187 if (vcpu->arch.intr_msr & MSR_LE)
188 shared_big_endian = false;
189 if (shared_big_endian != vcpu->arch.shared_big_endian)
190 kvmppc_swab_shared(vcpu);
191 vcpu->arch.shared_big_endian = shared_big_endian;
194 if (!(param2 & MAGIC_PAGE_FLAG_NOT_MAPPED_NX)) {
196 * Older versions of the Linux magic page code had
197 * a bug where they would map their trampoline code
198 * NX. If that's the case, remove !PR NX capability.
200 vcpu->arch.disable_kernel_nx = true;
201 kvm_make_request(KVM_REQ_TLB_FLUSH, vcpu);
204 vcpu->arch.magic_page_pa = param1 & ~0xfffULL;
205 vcpu->arch.magic_page_ea = param2 & ~0xfffULL;
207 #ifdef CONFIG_PPC_64K_PAGES
209 * Make sure our 4k magic page is in the same window of a 64k
210 * page within the guest and within the host's page.
212 if ((vcpu->arch.magic_page_pa & 0xf000) !=
213 ((ulong)vcpu->arch.shared & 0xf000)) {
214 void *old_shared = vcpu->arch.shared;
215 ulong shared = (ulong)vcpu->arch.shared;
219 shared |= vcpu->arch.magic_page_pa & 0xf000;
220 new_shared = (void*)shared;
221 memcpy(new_shared, old_shared, 0x1000);
222 vcpu->arch.shared = new_shared;
226 r2 = KVM_MAGIC_FEAT_SR | KVM_MAGIC_FEAT_MAS0_TO_SPRG7;
231 case KVM_HCALL_TOKEN(KVM_HC_FEATURES):
233 #if defined(CONFIG_PPC_BOOK3S) || defined(CONFIG_KVM_E500V2)
234 r2 |= (1 << KVM_FEATURE_MAGIC_PAGE);
237 /* Second return value is in r4 */
239 case EV_HCALL_TOKEN(EV_IDLE):
244 r = EV_UNIMPLEMENTED;
248 kvmppc_set_gpr(vcpu, 4, r2);
252 EXPORT_SYMBOL_GPL(kvmppc_kvm_pv);
254 int kvmppc_sanity_check(struct kvm_vcpu *vcpu)
258 /* We have to know what CPU to virtualize */
262 /* PAPR only works with book3s_64 */
263 if ((vcpu->arch.cpu_type != KVM_CPU_3S_64) && vcpu->arch.papr_enabled)
266 /* HV KVM can only do PAPR mode for now */
267 if (!vcpu->arch.papr_enabled && is_kvmppc_hv_enabled(vcpu->kvm))
270 #ifdef CONFIG_KVM_BOOKE_HV
271 if (!cpu_has_feature(CPU_FTR_EMB_HV))
279 return r ? 0 : -EINVAL;
281 EXPORT_SYMBOL_GPL(kvmppc_sanity_check);
283 int kvmppc_emulate_mmio(struct kvm_vcpu *vcpu)
285 enum emulation_result er;
288 er = kvmppc_emulate_loadstore(vcpu);
291 /* Future optimization: only reload non-volatiles if they were
292 * actually modified. */
298 case EMULATE_DO_MMIO:
299 vcpu->run->exit_reason = KVM_EXIT_MMIO;
300 /* We must reload nonvolatiles because "update" load/store
301 * instructions modify register state. */
302 /* Future optimization: only reload non-volatiles if they were
303 * actually modified. */
310 kvmppc_get_last_inst(vcpu, INST_GENERIC, &last_inst);
311 kvm_debug_ratelimited("Guest access to device memory using unsupported instruction (opcode: %#08x)\n",
315 * Injecting a Data Storage here is a bit more
316 * accurate since the instruction that caused the
317 * access could still be a valid one.
319 if (!IS_ENABLED(CONFIG_BOOKE)) {
320 ulong dsisr = DSISR_BADACCESS;
322 if (vcpu->mmio_is_write)
323 dsisr |= DSISR_ISSTORE;
325 kvmppc_core_queue_data_storage(vcpu, vcpu->arch.vaddr_accessed, dsisr);
328 * BookE does not send a SIGBUS on a bad
329 * fault, so use a Program interrupt instead
330 * to avoid a fault loop.
332 kvmppc_core_queue_program(vcpu, 0);
345 EXPORT_SYMBOL_GPL(kvmppc_emulate_mmio);
347 int kvmppc_st(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr,
350 ulong mp_pa = vcpu->arch.magic_page_pa & KVM_PAM & PAGE_MASK;
351 struct kvmppc_pte pte;
356 if (vcpu->kvm->arch.kvm_ops && vcpu->kvm->arch.kvm_ops->store_to_eaddr)
357 r = vcpu->kvm->arch.kvm_ops->store_to_eaddr(vcpu, eaddr, ptr,
360 if ((!r) || (r == -EAGAIN))
363 r = kvmppc_xlate(vcpu, *eaddr, data ? XLATE_DATA : XLATE_INST,
373 /* Magic page override */
374 if (kvmppc_supports_magic_page(vcpu) && mp_pa &&
375 ((pte.raddr & KVM_PAM & PAGE_MASK) == mp_pa) &&
376 !(kvmppc_get_msr(vcpu) & MSR_PR)) {
377 void *magic = vcpu->arch.shared;
378 magic += pte.eaddr & 0xfff;
379 memcpy(magic, ptr, size);
383 if (kvm_write_guest(vcpu->kvm, pte.raddr, ptr, size))
384 return EMULATE_DO_MMIO;
388 EXPORT_SYMBOL_GPL(kvmppc_st);
390 int kvmppc_ld(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr,
393 ulong mp_pa = vcpu->arch.magic_page_pa & KVM_PAM & PAGE_MASK;
394 struct kvmppc_pte pte;
399 if (vcpu->kvm->arch.kvm_ops && vcpu->kvm->arch.kvm_ops->load_from_eaddr)
400 rc = vcpu->kvm->arch.kvm_ops->load_from_eaddr(vcpu, eaddr, ptr,
403 if ((!rc) || (rc == -EAGAIN))
406 rc = kvmppc_xlate(vcpu, *eaddr, data ? XLATE_DATA : XLATE_INST,
416 if (!data && !pte.may_execute)
419 /* Magic page override */
420 if (kvmppc_supports_magic_page(vcpu) && mp_pa &&
421 ((pte.raddr & KVM_PAM & PAGE_MASK) == mp_pa) &&
422 !(kvmppc_get_msr(vcpu) & MSR_PR)) {
423 void *magic = vcpu->arch.shared;
424 magic += pte.eaddr & 0xfff;
425 memcpy(ptr, magic, size);
429 kvm_vcpu_srcu_read_lock(vcpu);
430 rc = kvm_read_guest(vcpu->kvm, pte.raddr, ptr, size);
431 kvm_vcpu_srcu_read_unlock(vcpu);
433 return EMULATE_DO_MMIO;
437 EXPORT_SYMBOL_GPL(kvmppc_ld);
439 int kvm_arch_hardware_enable(void)
444 int kvm_arch_hardware_setup(void *opaque)
449 int kvm_arch_check_processor_compat(void *opaque)
451 return kvmppc_core_check_processor_compat();
454 int kvm_arch_init_vm(struct kvm *kvm, unsigned long type)
456 struct kvmppc_ops *kvm_ops = NULL;
460 * if we have both HV and PR enabled, default is HV
464 kvm_ops = kvmppc_hv_ops;
466 kvm_ops = kvmppc_pr_ops;
469 } else if (type == KVM_VM_PPC_HV) {
472 kvm_ops = kvmppc_hv_ops;
473 } else if (type == KVM_VM_PPC_PR) {
476 kvm_ops = kvmppc_pr_ops;
480 if (!try_module_get(kvm_ops->owner))
483 kvm->arch.kvm_ops = kvm_ops;
484 r = kvmppc_core_init_vm(kvm);
486 module_put(kvm_ops->owner);
492 void kvm_arch_destroy_vm(struct kvm *kvm)
494 #ifdef CONFIG_KVM_XICS
496 * We call kick_all_cpus_sync() to ensure that all
497 * CPUs have executed any pending IPIs before we
498 * continue and free VCPUs structures below.
500 if (is_kvmppc_hv_enabled(kvm))
501 kick_all_cpus_sync();
504 kvm_destroy_vcpus(kvm);
506 mutex_lock(&kvm->lock);
508 kvmppc_core_destroy_vm(kvm);
510 mutex_unlock(&kvm->lock);
512 /* drop the module reference */
513 module_put(kvm->arch.kvm_ops->owner);
516 int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext)
519 /* Assume we're using HV mode when the HV module is loaded */
520 int hv_enabled = kvmppc_hv_ops ? 1 : 0;
524 * Hooray - we know which VM type we're running on. Depend on
525 * that rather than the guess above.
527 hv_enabled = is_kvmppc_hv_enabled(kvm);
532 case KVM_CAP_PPC_BOOKE_SREGS:
533 case KVM_CAP_PPC_BOOKE_WATCHDOG:
534 case KVM_CAP_PPC_EPR:
536 case KVM_CAP_PPC_SEGSTATE:
537 case KVM_CAP_PPC_HIOR:
538 case KVM_CAP_PPC_PAPR:
540 case KVM_CAP_PPC_UNSET_IRQ:
541 case KVM_CAP_PPC_IRQ_LEVEL:
542 case KVM_CAP_ENABLE_CAP:
543 case KVM_CAP_ONE_REG:
544 case KVM_CAP_IOEVENTFD:
545 case KVM_CAP_DEVICE_CTRL:
546 case KVM_CAP_IMMEDIATE_EXIT:
547 case KVM_CAP_SET_GUEST_DEBUG:
550 case KVM_CAP_PPC_GUEST_DEBUG_SSTEP:
551 case KVM_CAP_PPC_PAIRED_SINGLES:
552 case KVM_CAP_PPC_OSI:
553 case KVM_CAP_PPC_GET_PVINFO:
554 #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC)
557 /* We support this only for PR */
560 #ifdef CONFIG_KVM_MPIC
561 case KVM_CAP_IRQ_MPIC:
566 #ifdef CONFIG_PPC_BOOK3S_64
567 case KVM_CAP_SPAPR_TCE:
568 case KVM_CAP_SPAPR_TCE_64:
571 case KVM_CAP_SPAPR_TCE_VFIO:
572 r = !!cpu_has_feature(CPU_FTR_HVMODE);
574 case KVM_CAP_PPC_RTAS:
575 case KVM_CAP_PPC_FIXUP_HCALL:
576 case KVM_CAP_PPC_ENABLE_HCALL:
577 #ifdef CONFIG_KVM_XICS
578 case KVM_CAP_IRQ_XICS:
580 case KVM_CAP_PPC_GET_CPU_CHAR:
583 #ifdef CONFIG_KVM_XIVE
584 case KVM_CAP_PPC_IRQ_XIVE:
586 * We need XIVE to be enabled on the platform (implies
587 * a POWER9 processor) and the PowerNV platform, as
588 * nested is not yet supported.
590 r = xive_enabled() && !!cpu_has_feature(CPU_FTR_HVMODE) &&
591 kvmppc_xive_native_supported();
595 case KVM_CAP_PPC_ALLOC_HTAB:
598 #endif /* CONFIG_PPC_BOOK3S_64 */
599 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
600 case KVM_CAP_PPC_SMT:
603 if (kvm->arch.emul_smt_mode > 1)
604 r = kvm->arch.emul_smt_mode;
606 r = kvm->arch.smt_mode;
607 } else if (hv_enabled) {
608 if (cpu_has_feature(CPU_FTR_ARCH_300))
611 r = threads_per_subcore;
614 case KVM_CAP_PPC_SMT_POSSIBLE:
617 if (!cpu_has_feature(CPU_FTR_ARCH_300))
618 r = ((threads_per_subcore << 1) - 1);
620 /* P9 can emulate dbells, so allow any mode */
624 case KVM_CAP_PPC_RMA:
627 case KVM_CAP_PPC_HWRNG:
628 r = kvmppc_hwrng_present();
630 case KVM_CAP_PPC_MMU_RADIX:
631 r = !!(hv_enabled && radix_enabled());
633 case KVM_CAP_PPC_MMU_HASH_V3:
634 r = !!(hv_enabled && kvmppc_hv_ops->hash_v3_possible &&
635 kvmppc_hv_ops->hash_v3_possible());
637 case KVM_CAP_PPC_NESTED_HV:
638 r = !!(hv_enabled && kvmppc_hv_ops->enable_nested &&
639 !kvmppc_hv_ops->enable_nested(NULL));
642 case KVM_CAP_SYNC_MMU:
643 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
645 #elif defined(KVM_ARCH_WANT_MMU_NOTIFIER)
651 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
652 case KVM_CAP_PPC_HTAB_FD:
656 case KVM_CAP_NR_VCPUS:
658 * Recommending a number of CPUs is somewhat arbitrary; we
659 * return the number of present CPUs for -HV (since a host
660 * will have secondary threads "offline"), and for other KVM
661 * implementations just count online CPUs.
664 r = min_t(unsigned int, num_present_cpus(), KVM_MAX_VCPUS);
666 r = min_t(unsigned int, num_online_cpus(), KVM_MAX_VCPUS);
668 case KVM_CAP_MAX_VCPUS:
671 case KVM_CAP_MAX_VCPU_ID:
672 r = KVM_MAX_VCPU_IDS;
674 #ifdef CONFIG_PPC_BOOK3S_64
675 case KVM_CAP_PPC_GET_SMMU_INFO:
678 case KVM_CAP_SPAPR_MULTITCE:
681 case KVM_CAP_SPAPR_RESIZE_HPT:
685 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
686 case KVM_CAP_PPC_FWNMI:
690 #ifdef CONFIG_PPC_TRANSACTIONAL_MEM
691 case KVM_CAP_PPC_HTM:
692 r = !!(cur_cpu_spec->cpu_user_features2 & PPC_FEATURE2_HTM) ||
693 (hv_enabled && cpu_has_feature(CPU_FTR_P9_TM_HV_ASSIST));
696 #if defined(CONFIG_KVM_BOOK3S_HV_POSSIBLE)
697 case KVM_CAP_PPC_SECURE_GUEST:
698 r = hv_enabled && kvmppc_hv_ops->enable_svm &&
699 !kvmppc_hv_ops->enable_svm(NULL);
701 case KVM_CAP_PPC_DAWR1:
702 r = !!(hv_enabled && kvmppc_hv_ops->enable_dawr1 &&
703 !kvmppc_hv_ops->enable_dawr1(NULL));
705 case KVM_CAP_PPC_RPT_INVALIDATE:
709 case KVM_CAP_PPC_AIL_MODE_3:
712 * KVM PR, POWER7, and some POWER9s don't support AIL=3 mode.
713 * The POWER9s can support it if the guest runs in hash mode,
714 * but QEMU doesn't necessarily query the capability in time.
717 if (kvmhv_on_pseries()) {
718 if (pseries_reloc_on_exception())
720 } else if (cpu_has_feature(CPU_FTR_ARCH_207S) &&
721 !cpu_has_feature(CPU_FTR_P9_RADIX_PREFETCH_BUG)) {
734 long kvm_arch_dev_ioctl(struct file *filp,
735 unsigned int ioctl, unsigned long arg)
740 void kvm_arch_free_memslot(struct kvm *kvm, struct kvm_memory_slot *slot)
742 kvmppc_core_free_memslot(kvm, slot);
745 int kvm_arch_prepare_memory_region(struct kvm *kvm,
746 const struct kvm_memory_slot *old,
747 struct kvm_memory_slot *new,
748 enum kvm_mr_change change)
750 return kvmppc_core_prepare_memory_region(kvm, old, new, change);
753 void kvm_arch_commit_memory_region(struct kvm *kvm,
754 struct kvm_memory_slot *old,
755 const struct kvm_memory_slot *new,
756 enum kvm_mr_change change)
758 kvmppc_core_commit_memory_region(kvm, old, new, change);
761 void kvm_arch_flush_shadow_memslot(struct kvm *kvm,
762 struct kvm_memory_slot *slot)
764 kvmppc_core_flush_memslot(kvm, slot);
767 int kvm_arch_vcpu_precreate(struct kvm *kvm, unsigned int id)
772 static enum hrtimer_restart kvmppc_decrementer_wakeup(struct hrtimer *timer)
774 struct kvm_vcpu *vcpu;
776 vcpu = container_of(timer, struct kvm_vcpu, arch.dec_timer);
777 kvmppc_decrementer_func(vcpu);
779 return HRTIMER_NORESTART;
782 int kvm_arch_vcpu_create(struct kvm_vcpu *vcpu)
786 hrtimer_init(&vcpu->arch.dec_timer, CLOCK_REALTIME, HRTIMER_MODE_ABS);
787 vcpu->arch.dec_timer.function = kvmppc_decrementer_wakeup;
789 #ifdef CONFIG_KVM_EXIT_TIMING
790 mutex_init(&vcpu->arch.exit_timing_lock);
792 err = kvmppc_subarch_vcpu_init(vcpu);
796 err = kvmppc_core_vcpu_create(vcpu);
798 goto out_vcpu_uninit;
800 rcuwait_init(&vcpu->arch.wait);
801 vcpu->arch.waitp = &vcpu->arch.wait;
805 kvmppc_subarch_vcpu_uninit(vcpu);
809 void kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu)
813 void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu)
815 /* Make sure we're not using the vcpu anymore */
816 hrtimer_cancel(&vcpu->arch.dec_timer);
818 switch (vcpu->arch.irq_type) {
819 case KVMPPC_IRQ_MPIC:
820 kvmppc_mpic_disconnect_vcpu(vcpu->arch.mpic, vcpu);
822 case KVMPPC_IRQ_XICS:
824 kvmppc_xive_cleanup_vcpu(vcpu);
826 kvmppc_xics_free_icp(vcpu);
828 case KVMPPC_IRQ_XIVE:
829 kvmppc_xive_native_cleanup_vcpu(vcpu);
833 kvmppc_core_vcpu_free(vcpu);
835 kvmppc_subarch_vcpu_uninit(vcpu);
838 int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu)
840 return kvmppc_core_pending_dec(vcpu);
843 void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
847 * vrsave (formerly usprg0) isn't used by Linux, but may
848 * be used by the guest.
850 * On non-booke this is associated with Altivec and
851 * is handled by code in book3s.c.
853 mtspr(SPRN_VRSAVE, vcpu->arch.vrsave);
855 kvmppc_core_vcpu_load(vcpu, cpu);
858 void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu)
860 kvmppc_core_vcpu_put(vcpu);
862 vcpu->arch.vrsave = mfspr(SPRN_VRSAVE);
867 * irq_bypass_add_producer and irq_bypass_del_producer are only
868 * useful if the architecture supports PCI passthrough.
869 * irq_bypass_stop and irq_bypass_start are not needed and so
870 * kvm_ops are not defined for them.
872 bool kvm_arch_has_irq_bypass(void)
874 return ((kvmppc_hv_ops && kvmppc_hv_ops->irq_bypass_add_producer) ||
875 (kvmppc_pr_ops && kvmppc_pr_ops->irq_bypass_add_producer));
878 int kvm_arch_irq_bypass_add_producer(struct irq_bypass_consumer *cons,
879 struct irq_bypass_producer *prod)
881 struct kvm_kernel_irqfd *irqfd =
882 container_of(cons, struct kvm_kernel_irqfd, consumer);
883 struct kvm *kvm = irqfd->kvm;
885 if (kvm->arch.kvm_ops->irq_bypass_add_producer)
886 return kvm->arch.kvm_ops->irq_bypass_add_producer(cons, prod);
891 void kvm_arch_irq_bypass_del_producer(struct irq_bypass_consumer *cons,
892 struct irq_bypass_producer *prod)
894 struct kvm_kernel_irqfd *irqfd =
895 container_of(cons, struct kvm_kernel_irqfd, consumer);
896 struct kvm *kvm = irqfd->kvm;
898 if (kvm->arch.kvm_ops->irq_bypass_del_producer)
899 kvm->arch.kvm_ops->irq_bypass_del_producer(cons, prod);
903 static inline int kvmppc_get_vsr_dword_offset(int index)
907 if ((index != 0) && (index != 1))
919 static inline int kvmppc_get_vsr_word_offset(int index)
923 if ((index > 3) || (index < 0))
934 static inline void kvmppc_set_vsr_dword(struct kvm_vcpu *vcpu,
937 union kvmppc_one_reg val;
938 int offset = kvmppc_get_vsr_dword_offset(vcpu->arch.mmio_vsx_offset);
939 int index = vcpu->arch.io_gpr & KVM_MMIO_REG_MASK;
945 val.vval = VCPU_VSX_VR(vcpu, index - 32);
946 val.vsxval[offset] = gpr;
947 VCPU_VSX_VR(vcpu, index - 32) = val.vval;
949 VCPU_VSX_FPR(vcpu, index, offset) = gpr;
953 static inline void kvmppc_set_vsr_dword_dump(struct kvm_vcpu *vcpu,
956 union kvmppc_one_reg val;
957 int index = vcpu->arch.io_gpr & KVM_MMIO_REG_MASK;
960 val.vval = VCPU_VSX_VR(vcpu, index - 32);
963 VCPU_VSX_VR(vcpu, index - 32) = val.vval;
965 VCPU_VSX_FPR(vcpu, index, 0) = gpr;
966 VCPU_VSX_FPR(vcpu, index, 1) = gpr;
970 static inline void kvmppc_set_vsr_word_dump(struct kvm_vcpu *vcpu,
973 union kvmppc_one_reg val;
974 int index = vcpu->arch.io_gpr & KVM_MMIO_REG_MASK;
977 val.vsx32val[0] = gpr;
978 val.vsx32val[1] = gpr;
979 val.vsx32val[2] = gpr;
980 val.vsx32val[3] = gpr;
981 VCPU_VSX_VR(vcpu, index - 32) = val.vval;
983 val.vsx32val[0] = gpr;
984 val.vsx32val[1] = gpr;
985 VCPU_VSX_FPR(vcpu, index, 0) = val.vsxval[0];
986 VCPU_VSX_FPR(vcpu, index, 1) = val.vsxval[0];
990 static inline void kvmppc_set_vsr_word(struct kvm_vcpu *vcpu,
993 union kvmppc_one_reg val;
994 int offset = kvmppc_get_vsr_word_offset(vcpu->arch.mmio_vsx_offset);
995 int index = vcpu->arch.io_gpr & KVM_MMIO_REG_MASK;
996 int dword_offset, word_offset;
1002 val.vval = VCPU_VSX_VR(vcpu, index - 32);
1003 val.vsx32val[offset] = gpr32;
1004 VCPU_VSX_VR(vcpu, index - 32) = val.vval;
1006 dword_offset = offset / 2;
1007 word_offset = offset % 2;
1008 val.vsxval[0] = VCPU_VSX_FPR(vcpu, index, dword_offset);
1009 val.vsx32val[word_offset] = gpr32;
1010 VCPU_VSX_FPR(vcpu, index, dword_offset) = val.vsxval[0];
1013 #endif /* CONFIG_VSX */
1015 #ifdef CONFIG_ALTIVEC
1016 static inline int kvmppc_get_vmx_offset_generic(struct kvm_vcpu *vcpu,
1017 int index, int element_size)
1020 int elts = sizeof(vector128)/element_size;
1022 if ((index < 0) || (index >= elts))
1025 if (kvmppc_need_byteswap(vcpu))
1026 offset = elts - index - 1;
1033 static inline int kvmppc_get_vmx_dword_offset(struct kvm_vcpu *vcpu,
1036 return kvmppc_get_vmx_offset_generic(vcpu, index, 8);
1039 static inline int kvmppc_get_vmx_word_offset(struct kvm_vcpu *vcpu,
1042 return kvmppc_get_vmx_offset_generic(vcpu, index, 4);
1045 static inline int kvmppc_get_vmx_hword_offset(struct kvm_vcpu *vcpu,
1048 return kvmppc_get_vmx_offset_generic(vcpu, index, 2);
1051 static inline int kvmppc_get_vmx_byte_offset(struct kvm_vcpu *vcpu,
1054 return kvmppc_get_vmx_offset_generic(vcpu, index, 1);
1058 static inline void kvmppc_set_vmx_dword(struct kvm_vcpu *vcpu,
1061 union kvmppc_one_reg val;
1062 int offset = kvmppc_get_vmx_dword_offset(vcpu,
1063 vcpu->arch.mmio_vmx_offset);
1064 int index = vcpu->arch.io_gpr & KVM_MMIO_REG_MASK;
1069 val.vval = VCPU_VSX_VR(vcpu, index);
1070 val.vsxval[offset] = gpr;
1071 VCPU_VSX_VR(vcpu, index) = val.vval;
1074 static inline void kvmppc_set_vmx_word(struct kvm_vcpu *vcpu,
1077 union kvmppc_one_reg val;
1078 int offset = kvmppc_get_vmx_word_offset(vcpu,
1079 vcpu->arch.mmio_vmx_offset);
1080 int index = vcpu->arch.io_gpr & KVM_MMIO_REG_MASK;
1085 val.vval = VCPU_VSX_VR(vcpu, index);
1086 val.vsx32val[offset] = gpr32;
1087 VCPU_VSX_VR(vcpu, index) = val.vval;
1090 static inline void kvmppc_set_vmx_hword(struct kvm_vcpu *vcpu,
1093 union kvmppc_one_reg val;
1094 int offset = kvmppc_get_vmx_hword_offset(vcpu,
1095 vcpu->arch.mmio_vmx_offset);
1096 int index = vcpu->arch.io_gpr & KVM_MMIO_REG_MASK;
1101 val.vval = VCPU_VSX_VR(vcpu, index);
1102 val.vsx16val[offset] = gpr16;
1103 VCPU_VSX_VR(vcpu, index) = val.vval;
1106 static inline void kvmppc_set_vmx_byte(struct kvm_vcpu *vcpu,
1109 union kvmppc_one_reg val;
1110 int offset = kvmppc_get_vmx_byte_offset(vcpu,
1111 vcpu->arch.mmio_vmx_offset);
1112 int index = vcpu->arch.io_gpr & KVM_MMIO_REG_MASK;
1117 val.vval = VCPU_VSX_VR(vcpu, index);
1118 val.vsx8val[offset] = gpr8;
1119 VCPU_VSX_VR(vcpu, index) = val.vval;
1121 #endif /* CONFIG_ALTIVEC */
1123 #ifdef CONFIG_PPC_FPU
1124 static inline u64 sp_to_dp(u32 fprs)
1130 asm ("lfs%U1%X1 0,%1; stfd%U0%X0 0,%0" : "=m<>" (fprd) : "m<>" (fprs)
1136 static inline u32 dp_to_sp(u64 fprd)
1142 asm ("lfd%U1%X1 0,%1; stfs%U0%X0 0,%0" : "=m<>" (fprs) : "m<>" (fprd)
1149 #define sp_to_dp(x) (x)
1150 #define dp_to_sp(x) (x)
1151 #endif /* CONFIG_PPC_FPU */
1153 static void kvmppc_complete_mmio_load(struct kvm_vcpu *vcpu)
1155 struct kvm_run *run = vcpu->run;
1158 if (run->mmio.len > sizeof(gpr))
1161 if (!vcpu->arch.mmio_host_swabbed) {
1162 switch (run->mmio.len) {
1163 case 8: gpr = *(u64 *)run->mmio.data; break;
1164 case 4: gpr = *(u32 *)run->mmio.data; break;
1165 case 2: gpr = *(u16 *)run->mmio.data; break;
1166 case 1: gpr = *(u8 *)run->mmio.data; break;
1169 switch (run->mmio.len) {
1170 case 8: gpr = swab64(*(u64 *)run->mmio.data); break;
1171 case 4: gpr = swab32(*(u32 *)run->mmio.data); break;
1172 case 2: gpr = swab16(*(u16 *)run->mmio.data); break;
1173 case 1: gpr = *(u8 *)run->mmio.data; break;
1177 /* conversion between single and double precision */
1178 if ((vcpu->arch.mmio_sp64_extend) && (run->mmio.len == 4))
1179 gpr = sp_to_dp(gpr);
1181 if (vcpu->arch.mmio_sign_extend) {
1182 switch (run->mmio.len) {
1185 gpr = (s64)(s32)gpr;
1189 gpr = (s64)(s16)gpr;
1197 switch (vcpu->arch.io_gpr & KVM_MMIO_REG_EXT_MASK) {
1198 case KVM_MMIO_REG_GPR:
1199 kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, gpr);
1201 case KVM_MMIO_REG_FPR:
1202 if (vcpu->kvm->arch.kvm_ops->giveup_ext)
1203 vcpu->kvm->arch.kvm_ops->giveup_ext(vcpu, MSR_FP);
1205 VCPU_FPR(vcpu, vcpu->arch.io_gpr & KVM_MMIO_REG_MASK) = gpr;
1207 #ifdef CONFIG_PPC_BOOK3S
1208 case KVM_MMIO_REG_QPR:
1209 vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr;
1211 case KVM_MMIO_REG_FQPR:
1212 VCPU_FPR(vcpu, vcpu->arch.io_gpr & KVM_MMIO_REG_MASK) = gpr;
1213 vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr;
1217 case KVM_MMIO_REG_VSX:
1218 if (vcpu->kvm->arch.kvm_ops->giveup_ext)
1219 vcpu->kvm->arch.kvm_ops->giveup_ext(vcpu, MSR_VSX);
1221 if (vcpu->arch.mmio_copy_type == KVMPPC_VSX_COPY_DWORD)
1222 kvmppc_set_vsr_dword(vcpu, gpr);
1223 else if (vcpu->arch.mmio_copy_type == KVMPPC_VSX_COPY_WORD)
1224 kvmppc_set_vsr_word(vcpu, gpr);
1225 else if (vcpu->arch.mmio_copy_type ==
1226 KVMPPC_VSX_COPY_DWORD_LOAD_DUMP)
1227 kvmppc_set_vsr_dword_dump(vcpu, gpr);
1228 else if (vcpu->arch.mmio_copy_type ==
1229 KVMPPC_VSX_COPY_WORD_LOAD_DUMP)
1230 kvmppc_set_vsr_word_dump(vcpu, gpr);
1233 #ifdef CONFIG_ALTIVEC
1234 case KVM_MMIO_REG_VMX:
1235 if (vcpu->kvm->arch.kvm_ops->giveup_ext)
1236 vcpu->kvm->arch.kvm_ops->giveup_ext(vcpu, MSR_VEC);
1238 if (vcpu->arch.mmio_copy_type == KVMPPC_VMX_COPY_DWORD)
1239 kvmppc_set_vmx_dword(vcpu, gpr);
1240 else if (vcpu->arch.mmio_copy_type == KVMPPC_VMX_COPY_WORD)
1241 kvmppc_set_vmx_word(vcpu, gpr);
1242 else if (vcpu->arch.mmio_copy_type ==
1243 KVMPPC_VMX_COPY_HWORD)
1244 kvmppc_set_vmx_hword(vcpu, gpr);
1245 else if (vcpu->arch.mmio_copy_type ==
1246 KVMPPC_VMX_COPY_BYTE)
1247 kvmppc_set_vmx_byte(vcpu, gpr);
1250 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
1251 case KVM_MMIO_REG_NESTED_GPR:
1252 if (kvmppc_need_byteswap(vcpu))
1254 kvm_vcpu_write_guest(vcpu, vcpu->arch.nested_io_gpr, &gpr,
1263 static int __kvmppc_handle_load(struct kvm_vcpu *vcpu,
1264 unsigned int rt, unsigned int bytes,
1265 int is_default_endian, int sign_extend)
1267 struct kvm_run *run = vcpu->run;
1271 /* Pity C doesn't have a logical XOR operator */
1272 if (kvmppc_need_byteswap(vcpu)) {
1273 host_swabbed = is_default_endian;
1275 host_swabbed = !is_default_endian;
1278 if (bytes > sizeof(run->mmio.data))
1279 return EMULATE_FAIL;
1281 run->mmio.phys_addr = vcpu->arch.paddr_accessed;
1282 run->mmio.len = bytes;
1283 run->mmio.is_write = 0;
1285 vcpu->arch.io_gpr = rt;
1286 vcpu->arch.mmio_host_swabbed = host_swabbed;
1287 vcpu->mmio_needed = 1;
1288 vcpu->mmio_is_write = 0;
1289 vcpu->arch.mmio_sign_extend = sign_extend;
1291 idx = srcu_read_lock(&vcpu->kvm->srcu);
1293 ret = kvm_io_bus_read(vcpu, KVM_MMIO_BUS, run->mmio.phys_addr,
1294 bytes, &run->mmio.data);
1296 srcu_read_unlock(&vcpu->kvm->srcu, idx);
1299 kvmppc_complete_mmio_load(vcpu);
1300 vcpu->mmio_needed = 0;
1301 return EMULATE_DONE;
1304 return EMULATE_DO_MMIO;
1307 int kvmppc_handle_load(struct kvm_vcpu *vcpu,
1308 unsigned int rt, unsigned int bytes,
1309 int is_default_endian)
1311 return __kvmppc_handle_load(vcpu, rt, bytes, is_default_endian, 0);
1313 EXPORT_SYMBOL_GPL(kvmppc_handle_load);
1315 /* Same as above, but sign extends */
1316 int kvmppc_handle_loads(struct kvm_vcpu *vcpu,
1317 unsigned int rt, unsigned int bytes,
1318 int is_default_endian)
1320 return __kvmppc_handle_load(vcpu, rt, bytes, is_default_endian, 1);
1324 int kvmppc_handle_vsx_load(struct kvm_vcpu *vcpu,
1325 unsigned int rt, unsigned int bytes,
1326 int is_default_endian, int mmio_sign_extend)
1328 enum emulation_result emulated = EMULATE_DONE;
1330 /* Currently, mmio_vsx_copy_nums only allowed to be 4 or less */
1331 if (vcpu->arch.mmio_vsx_copy_nums > 4)
1332 return EMULATE_FAIL;
1334 while (vcpu->arch.mmio_vsx_copy_nums) {
1335 emulated = __kvmppc_handle_load(vcpu, rt, bytes,
1336 is_default_endian, mmio_sign_extend);
1338 if (emulated != EMULATE_DONE)
1341 vcpu->arch.paddr_accessed += vcpu->run->mmio.len;
1343 vcpu->arch.mmio_vsx_copy_nums--;
1344 vcpu->arch.mmio_vsx_offset++;
1348 #endif /* CONFIG_VSX */
1350 int kvmppc_handle_store(struct kvm_vcpu *vcpu,
1351 u64 val, unsigned int bytes, int is_default_endian)
1353 struct kvm_run *run = vcpu->run;
1354 void *data = run->mmio.data;
1358 /* Pity C doesn't have a logical XOR operator */
1359 if (kvmppc_need_byteswap(vcpu)) {
1360 host_swabbed = is_default_endian;
1362 host_swabbed = !is_default_endian;
1365 if (bytes > sizeof(run->mmio.data))
1366 return EMULATE_FAIL;
1368 run->mmio.phys_addr = vcpu->arch.paddr_accessed;
1369 run->mmio.len = bytes;
1370 run->mmio.is_write = 1;
1371 vcpu->mmio_needed = 1;
1372 vcpu->mmio_is_write = 1;
1374 if ((vcpu->arch.mmio_sp64_extend) && (bytes == 4))
1375 val = dp_to_sp(val);
1377 /* Store the value at the lowest bytes in 'data'. */
1378 if (!host_swabbed) {
1380 case 8: *(u64 *)data = val; break;
1381 case 4: *(u32 *)data = val; break;
1382 case 2: *(u16 *)data = val; break;
1383 case 1: *(u8 *)data = val; break;
1387 case 8: *(u64 *)data = swab64(val); break;
1388 case 4: *(u32 *)data = swab32(val); break;
1389 case 2: *(u16 *)data = swab16(val); break;
1390 case 1: *(u8 *)data = val; break;
1394 idx = srcu_read_lock(&vcpu->kvm->srcu);
1396 ret = kvm_io_bus_write(vcpu, KVM_MMIO_BUS, run->mmio.phys_addr,
1397 bytes, &run->mmio.data);
1399 srcu_read_unlock(&vcpu->kvm->srcu, idx);
1402 vcpu->mmio_needed = 0;
1403 return EMULATE_DONE;
1406 return EMULATE_DO_MMIO;
1408 EXPORT_SYMBOL_GPL(kvmppc_handle_store);
1411 static inline int kvmppc_get_vsr_data(struct kvm_vcpu *vcpu, int rs, u64 *val)
1413 u32 dword_offset, word_offset;
1414 union kvmppc_one_reg reg;
1416 int copy_type = vcpu->arch.mmio_copy_type;
1419 switch (copy_type) {
1420 case KVMPPC_VSX_COPY_DWORD:
1422 kvmppc_get_vsr_dword_offset(vcpu->arch.mmio_vsx_offset);
1424 if (vsx_offset == -1) {
1430 *val = VCPU_VSX_FPR(vcpu, rs, vsx_offset);
1432 reg.vval = VCPU_VSX_VR(vcpu, rs - 32);
1433 *val = reg.vsxval[vsx_offset];
1437 case KVMPPC_VSX_COPY_WORD:
1439 kvmppc_get_vsr_word_offset(vcpu->arch.mmio_vsx_offset);
1441 if (vsx_offset == -1) {
1447 dword_offset = vsx_offset / 2;
1448 word_offset = vsx_offset % 2;
1449 reg.vsxval[0] = VCPU_VSX_FPR(vcpu, rs, dword_offset);
1450 *val = reg.vsx32val[word_offset];
1452 reg.vval = VCPU_VSX_VR(vcpu, rs - 32);
1453 *val = reg.vsx32val[vsx_offset];
1465 int kvmppc_handle_vsx_store(struct kvm_vcpu *vcpu,
1466 int rs, unsigned int bytes, int is_default_endian)
1469 enum emulation_result emulated = EMULATE_DONE;
1471 vcpu->arch.io_gpr = rs;
1473 /* Currently, mmio_vsx_copy_nums only allowed to be 4 or less */
1474 if (vcpu->arch.mmio_vsx_copy_nums > 4)
1475 return EMULATE_FAIL;
1477 while (vcpu->arch.mmio_vsx_copy_nums) {
1478 if (kvmppc_get_vsr_data(vcpu, rs, &val) == -1)
1479 return EMULATE_FAIL;
1481 emulated = kvmppc_handle_store(vcpu,
1482 val, bytes, is_default_endian);
1484 if (emulated != EMULATE_DONE)
1487 vcpu->arch.paddr_accessed += vcpu->run->mmio.len;
1489 vcpu->arch.mmio_vsx_copy_nums--;
1490 vcpu->arch.mmio_vsx_offset++;
1496 static int kvmppc_emulate_mmio_vsx_loadstore(struct kvm_vcpu *vcpu)
1498 struct kvm_run *run = vcpu->run;
1499 enum emulation_result emulated = EMULATE_FAIL;
1502 vcpu->arch.paddr_accessed += run->mmio.len;
1504 if (!vcpu->mmio_is_write) {
1505 emulated = kvmppc_handle_vsx_load(vcpu, vcpu->arch.io_gpr,
1506 run->mmio.len, 1, vcpu->arch.mmio_sign_extend);
1508 emulated = kvmppc_handle_vsx_store(vcpu,
1509 vcpu->arch.io_gpr, run->mmio.len, 1);
1513 case EMULATE_DO_MMIO:
1514 run->exit_reason = KVM_EXIT_MMIO;
1518 pr_info("KVM: MMIO emulation failed (VSX repeat)\n");
1519 run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
1520 run->internal.suberror = KVM_INTERNAL_ERROR_EMULATION;
1529 #endif /* CONFIG_VSX */
1531 #ifdef CONFIG_ALTIVEC
1532 int kvmppc_handle_vmx_load(struct kvm_vcpu *vcpu,
1533 unsigned int rt, unsigned int bytes, int is_default_endian)
1535 enum emulation_result emulated = EMULATE_DONE;
1537 if (vcpu->arch.mmio_vmx_copy_nums > 2)
1538 return EMULATE_FAIL;
1540 while (vcpu->arch.mmio_vmx_copy_nums) {
1541 emulated = __kvmppc_handle_load(vcpu, rt, bytes,
1542 is_default_endian, 0);
1544 if (emulated != EMULATE_DONE)
1547 vcpu->arch.paddr_accessed += vcpu->run->mmio.len;
1548 vcpu->arch.mmio_vmx_copy_nums--;
1549 vcpu->arch.mmio_vmx_offset++;
1555 static int kvmppc_get_vmx_dword(struct kvm_vcpu *vcpu, int index, u64 *val)
1557 union kvmppc_one_reg reg;
1562 kvmppc_get_vmx_dword_offset(vcpu, vcpu->arch.mmio_vmx_offset);
1564 if (vmx_offset == -1)
1567 reg.vval = VCPU_VSX_VR(vcpu, index);
1568 *val = reg.vsxval[vmx_offset];
1573 static int kvmppc_get_vmx_word(struct kvm_vcpu *vcpu, int index, u64 *val)
1575 union kvmppc_one_reg reg;
1580 kvmppc_get_vmx_word_offset(vcpu, vcpu->arch.mmio_vmx_offset);
1582 if (vmx_offset == -1)
1585 reg.vval = VCPU_VSX_VR(vcpu, index);
1586 *val = reg.vsx32val[vmx_offset];
1591 static int kvmppc_get_vmx_hword(struct kvm_vcpu *vcpu, int index, u64 *val)
1593 union kvmppc_one_reg reg;
1598 kvmppc_get_vmx_hword_offset(vcpu, vcpu->arch.mmio_vmx_offset);
1600 if (vmx_offset == -1)
1603 reg.vval = VCPU_VSX_VR(vcpu, index);
1604 *val = reg.vsx16val[vmx_offset];
1609 static int kvmppc_get_vmx_byte(struct kvm_vcpu *vcpu, int index, u64 *val)
1611 union kvmppc_one_reg reg;
1616 kvmppc_get_vmx_byte_offset(vcpu, vcpu->arch.mmio_vmx_offset);
1618 if (vmx_offset == -1)
1621 reg.vval = VCPU_VSX_VR(vcpu, index);
1622 *val = reg.vsx8val[vmx_offset];
1627 int kvmppc_handle_vmx_store(struct kvm_vcpu *vcpu,
1628 unsigned int rs, unsigned int bytes, int is_default_endian)
1631 unsigned int index = rs & KVM_MMIO_REG_MASK;
1632 enum emulation_result emulated = EMULATE_DONE;
1634 if (vcpu->arch.mmio_vmx_copy_nums > 2)
1635 return EMULATE_FAIL;
1637 vcpu->arch.io_gpr = rs;
1639 while (vcpu->arch.mmio_vmx_copy_nums) {
1640 switch (vcpu->arch.mmio_copy_type) {
1641 case KVMPPC_VMX_COPY_DWORD:
1642 if (kvmppc_get_vmx_dword(vcpu, index, &val) == -1)
1643 return EMULATE_FAIL;
1646 case KVMPPC_VMX_COPY_WORD:
1647 if (kvmppc_get_vmx_word(vcpu, index, &val) == -1)
1648 return EMULATE_FAIL;
1650 case KVMPPC_VMX_COPY_HWORD:
1651 if (kvmppc_get_vmx_hword(vcpu, index, &val) == -1)
1652 return EMULATE_FAIL;
1654 case KVMPPC_VMX_COPY_BYTE:
1655 if (kvmppc_get_vmx_byte(vcpu, index, &val) == -1)
1656 return EMULATE_FAIL;
1659 return EMULATE_FAIL;
1662 emulated = kvmppc_handle_store(vcpu, val, bytes,
1664 if (emulated != EMULATE_DONE)
1667 vcpu->arch.paddr_accessed += vcpu->run->mmio.len;
1668 vcpu->arch.mmio_vmx_copy_nums--;
1669 vcpu->arch.mmio_vmx_offset++;
1675 static int kvmppc_emulate_mmio_vmx_loadstore(struct kvm_vcpu *vcpu)
1677 struct kvm_run *run = vcpu->run;
1678 enum emulation_result emulated = EMULATE_FAIL;
1681 vcpu->arch.paddr_accessed += run->mmio.len;
1683 if (!vcpu->mmio_is_write) {
1684 emulated = kvmppc_handle_vmx_load(vcpu,
1685 vcpu->arch.io_gpr, run->mmio.len, 1);
1687 emulated = kvmppc_handle_vmx_store(vcpu,
1688 vcpu->arch.io_gpr, run->mmio.len, 1);
1692 case EMULATE_DO_MMIO:
1693 run->exit_reason = KVM_EXIT_MMIO;
1697 pr_info("KVM: MMIO emulation failed (VMX repeat)\n");
1698 run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
1699 run->internal.suberror = KVM_INTERNAL_ERROR_EMULATION;
1708 #endif /* CONFIG_ALTIVEC */
1710 int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg)
1713 union kvmppc_one_reg val;
1716 size = one_reg_size(reg->id);
1717 if (size > sizeof(val))
1720 r = kvmppc_get_one_reg(vcpu, reg->id, &val);
1724 #ifdef CONFIG_ALTIVEC
1725 case KVM_REG_PPC_VR0 ... KVM_REG_PPC_VR31:
1726 if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
1730 val.vval = vcpu->arch.vr.vr[reg->id - KVM_REG_PPC_VR0];
1732 case KVM_REG_PPC_VSCR:
1733 if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
1737 val = get_reg_val(reg->id, vcpu->arch.vr.vscr.u[3]);
1739 case KVM_REG_PPC_VRSAVE:
1740 val = get_reg_val(reg->id, vcpu->arch.vrsave);
1742 #endif /* CONFIG_ALTIVEC */
1752 if (copy_to_user((char __user *)(unsigned long)reg->addr, &val, size))
1758 int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg)
1761 union kvmppc_one_reg val;
1764 size = one_reg_size(reg->id);
1765 if (size > sizeof(val))
1768 if (copy_from_user(&val, (char __user *)(unsigned long)reg->addr, size))
1771 r = kvmppc_set_one_reg(vcpu, reg->id, &val);
1775 #ifdef CONFIG_ALTIVEC
1776 case KVM_REG_PPC_VR0 ... KVM_REG_PPC_VR31:
1777 if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
1781 vcpu->arch.vr.vr[reg->id - KVM_REG_PPC_VR0] = val.vval;
1783 case KVM_REG_PPC_VSCR:
1784 if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
1788 vcpu->arch.vr.vscr.u[3] = set_reg_val(reg->id, val);
1790 case KVM_REG_PPC_VRSAVE:
1791 if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
1795 vcpu->arch.vrsave = set_reg_val(reg->id, val);
1797 #endif /* CONFIG_ALTIVEC */
1807 int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu)
1809 struct kvm_run *run = vcpu->run;
1814 if (vcpu->mmio_needed) {
1815 vcpu->mmio_needed = 0;
1816 if (!vcpu->mmio_is_write)
1817 kvmppc_complete_mmio_load(vcpu);
1819 if (vcpu->arch.mmio_vsx_copy_nums > 0) {
1820 vcpu->arch.mmio_vsx_copy_nums--;
1821 vcpu->arch.mmio_vsx_offset++;
1824 if (vcpu->arch.mmio_vsx_copy_nums > 0) {
1825 r = kvmppc_emulate_mmio_vsx_loadstore(vcpu);
1826 if (r == RESUME_HOST) {
1827 vcpu->mmio_needed = 1;
1832 #ifdef CONFIG_ALTIVEC
1833 if (vcpu->arch.mmio_vmx_copy_nums > 0) {
1834 vcpu->arch.mmio_vmx_copy_nums--;
1835 vcpu->arch.mmio_vmx_offset++;
1838 if (vcpu->arch.mmio_vmx_copy_nums > 0) {
1839 r = kvmppc_emulate_mmio_vmx_loadstore(vcpu);
1840 if (r == RESUME_HOST) {
1841 vcpu->mmio_needed = 1;
1846 } else if (vcpu->arch.osi_needed) {
1847 u64 *gprs = run->osi.gprs;
1850 for (i = 0; i < 32; i++)
1851 kvmppc_set_gpr(vcpu, i, gprs[i]);
1852 vcpu->arch.osi_needed = 0;
1853 } else if (vcpu->arch.hcall_needed) {
1856 kvmppc_set_gpr(vcpu, 3, run->papr_hcall.ret);
1857 for (i = 0; i < 9; ++i)
1858 kvmppc_set_gpr(vcpu, 4 + i, run->papr_hcall.args[i]);
1859 vcpu->arch.hcall_needed = 0;
1861 } else if (vcpu->arch.epr_needed) {
1862 kvmppc_set_epr(vcpu, run->epr.epr);
1863 vcpu->arch.epr_needed = 0;
1867 kvm_sigset_activate(vcpu);
1869 if (run->immediate_exit)
1872 r = kvmppc_vcpu_run(vcpu);
1874 kvm_sigset_deactivate(vcpu);
1876 #ifdef CONFIG_ALTIVEC
1881 * We're already returning to userspace, don't pass the
1882 * RESUME_HOST flags along.
1891 int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq)
1893 if (irq->irq == KVM_INTERRUPT_UNSET) {
1894 kvmppc_core_dequeue_external(vcpu);
1898 kvmppc_core_queue_external(vcpu, irq);
1900 kvm_vcpu_kick(vcpu);
1905 static int kvm_vcpu_ioctl_enable_cap(struct kvm_vcpu *vcpu,
1906 struct kvm_enable_cap *cap)
1914 case KVM_CAP_PPC_OSI:
1916 vcpu->arch.osi_enabled = true;
1918 case KVM_CAP_PPC_PAPR:
1920 vcpu->arch.papr_enabled = true;
1922 case KVM_CAP_PPC_EPR:
1925 vcpu->arch.epr_flags |= KVMPPC_EPR_USER;
1927 vcpu->arch.epr_flags &= ~KVMPPC_EPR_USER;
1930 case KVM_CAP_PPC_BOOKE_WATCHDOG:
1932 vcpu->arch.watchdog_enabled = true;
1935 #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC)
1936 case KVM_CAP_SW_TLB: {
1937 struct kvm_config_tlb cfg;
1938 void __user *user_ptr = (void __user *)(uintptr_t)cap->args[0];
1941 if (copy_from_user(&cfg, user_ptr, sizeof(cfg)))
1944 r = kvm_vcpu_ioctl_config_tlb(vcpu, &cfg);
1948 #ifdef CONFIG_KVM_MPIC
1949 case KVM_CAP_IRQ_MPIC: {
1951 struct kvm_device *dev;
1954 f = fdget(cap->args[0]);
1959 dev = kvm_device_from_filp(f.file);
1961 r = kvmppc_mpic_connect_vcpu(dev, vcpu, cap->args[1]);
1967 #ifdef CONFIG_KVM_XICS
1968 case KVM_CAP_IRQ_XICS: {
1970 struct kvm_device *dev;
1973 f = fdget(cap->args[0]);
1978 dev = kvm_device_from_filp(f.file);
1981 r = kvmppc_xive_connect_vcpu(dev, vcpu, cap->args[1]);
1983 r = kvmppc_xics_connect_vcpu(dev, vcpu, cap->args[1]);
1989 #endif /* CONFIG_KVM_XICS */
1990 #ifdef CONFIG_KVM_XIVE
1991 case KVM_CAP_PPC_IRQ_XIVE: {
1993 struct kvm_device *dev;
1996 f = fdget(cap->args[0]);
2001 if (!xive_enabled())
2005 dev = kvm_device_from_filp(f.file);
2007 r = kvmppc_xive_native_connect_vcpu(dev, vcpu,
2013 #endif /* CONFIG_KVM_XIVE */
2014 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
2015 case KVM_CAP_PPC_FWNMI:
2017 if (!is_kvmppc_hv_enabled(vcpu->kvm))
2020 vcpu->kvm->arch.fwnmi_enabled = true;
2022 #endif /* CONFIG_KVM_BOOK3S_HV_POSSIBLE */
2029 r = kvmppc_sanity_check(vcpu);
2034 bool kvm_arch_intc_initialized(struct kvm *kvm)
2036 #ifdef CONFIG_KVM_MPIC
2040 #ifdef CONFIG_KVM_XICS
2041 if (kvm->arch.xics || kvm->arch.xive)
2047 int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu,
2048 struct kvm_mp_state *mp_state)
2053 int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,
2054 struct kvm_mp_state *mp_state)
2059 long kvm_arch_vcpu_async_ioctl(struct file *filp,
2060 unsigned int ioctl, unsigned long arg)
2062 struct kvm_vcpu *vcpu = filp->private_data;
2063 void __user *argp = (void __user *)arg;
2065 if (ioctl == KVM_INTERRUPT) {
2066 struct kvm_interrupt irq;
2067 if (copy_from_user(&irq, argp, sizeof(irq)))
2069 return kvm_vcpu_ioctl_interrupt(vcpu, &irq);
2071 return -ENOIOCTLCMD;
2074 long kvm_arch_vcpu_ioctl(struct file *filp,
2075 unsigned int ioctl, unsigned long arg)
2077 struct kvm_vcpu *vcpu = filp->private_data;
2078 void __user *argp = (void __user *)arg;
2082 case KVM_ENABLE_CAP:
2084 struct kvm_enable_cap cap;
2086 if (copy_from_user(&cap, argp, sizeof(cap)))
2089 r = kvm_vcpu_ioctl_enable_cap(vcpu, &cap);
2094 case KVM_SET_ONE_REG:
2095 case KVM_GET_ONE_REG:
2097 struct kvm_one_reg reg;
2099 if (copy_from_user(®, argp, sizeof(reg)))
2101 if (ioctl == KVM_SET_ONE_REG)
2102 r = kvm_vcpu_ioctl_set_one_reg(vcpu, ®);
2104 r = kvm_vcpu_ioctl_get_one_reg(vcpu, ®);
2108 #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC)
2109 case KVM_DIRTY_TLB: {
2110 struct kvm_dirty_tlb dirty;
2112 if (copy_from_user(&dirty, argp, sizeof(dirty)))
2115 r = kvm_vcpu_ioctl_dirty_tlb(vcpu, &dirty);
2128 vm_fault_t kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf)
2130 return VM_FAULT_SIGBUS;
2133 static int kvm_vm_ioctl_get_pvinfo(struct kvm_ppc_pvinfo *pvinfo)
2135 u32 inst_nop = 0x60000000;
2136 #ifdef CONFIG_KVM_BOOKE_HV
2137 u32 inst_sc1 = 0x44000022;
2138 pvinfo->hcall[0] = cpu_to_be32(inst_sc1);
2139 pvinfo->hcall[1] = cpu_to_be32(inst_nop);
2140 pvinfo->hcall[2] = cpu_to_be32(inst_nop);
2141 pvinfo->hcall[3] = cpu_to_be32(inst_nop);
2143 u32 inst_lis = 0x3c000000;
2144 u32 inst_ori = 0x60000000;
2145 u32 inst_sc = 0x44000002;
2146 u32 inst_imm_mask = 0xffff;
2149 * The hypercall to get into KVM from within guest context is as
2152 * lis r0, r0, KVM_SC_MAGIC_R0@h
2153 * ori r0, KVM_SC_MAGIC_R0@l
2157 pvinfo->hcall[0] = cpu_to_be32(inst_lis | ((KVM_SC_MAGIC_R0 >> 16) & inst_imm_mask));
2158 pvinfo->hcall[1] = cpu_to_be32(inst_ori | (KVM_SC_MAGIC_R0 & inst_imm_mask));
2159 pvinfo->hcall[2] = cpu_to_be32(inst_sc);
2160 pvinfo->hcall[3] = cpu_to_be32(inst_nop);
2163 pvinfo->flags = KVM_PPC_PVINFO_FLAGS_EV_IDLE;
2168 int kvm_vm_ioctl_irq_line(struct kvm *kvm, struct kvm_irq_level *irq_event,
2171 if (!irqchip_in_kernel(kvm))
2174 irq_event->status = kvm_set_irq(kvm, KVM_USERSPACE_IRQ_SOURCE_ID,
2175 irq_event->irq, irq_event->level,
2181 int kvm_vm_ioctl_enable_cap(struct kvm *kvm,
2182 struct kvm_enable_cap *cap)
2190 #ifdef CONFIG_KVM_BOOK3S_64_HANDLER
2191 case KVM_CAP_PPC_ENABLE_HCALL: {
2192 unsigned long hcall = cap->args[0];
2195 if (hcall > MAX_HCALL_OPCODE || (hcall & 3) ||
2198 if (!kvmppc_book3s_hcall_implemented(kvm, hcall))
2201 set_bit(hcall / 4, kvm->arch.enabled_hcalls);
2203 clear_bit(hcall / 4, kvm->arch.enabled_hcalls);
2207 case KVM_CAP_PPC_SMT: {
2208 unsigned long mode = cap->args[0];
2209 unsigned long flags = cap->args[1];
2212 if (kvm->arch.kvm_ops->set_smt_mode)
2213 r = kvm->arch.kvm_ops->set_smt_mode(kvm, mode, flags);
2217 case KVM_CAP_PPC_NESTED_HV:
2219 if (!is_kvmppc_hv_enabled(kvm) ||
2220 !kvm->arch.kvm_ops->enable_nested)
2222 r = kvm->arch.kvm_ops->enable_nested(kvm);
2225 #if defined(CONFIG_KVM_BOOK3S_HV_POSSIBLE)
2226 case KVM_CAP_PPC_SECURE_GUEST:
2228 if (!is_kvmppc_hv_enabled(kvm) || !kvm->arch.kvm_ops->enable_svm)
2230 r = kvm->arch.kvm_ops->enable_svm(kvm);
2232 case KVM_CAP_PPC_DAWR1:
2234 if (!is_kvmppc_hv_enabled(kvm) || !kvm->arch.kvm_ops->enable_dawr1)
2236 r = kvm->arch.kvm_ops->enable_dawr1(kvm);
2247 #ifdef CONFIG_PPC_BOOK3S_64
2249 * These functions check whether the underlying hardware is safe
2250 * against attacks based on observing the effects of speculatively
2251 * executed instructions, and whether it supplies instructions for
2252 * use in workarounds. The information comes from firmware, either
2253 * via the device tree on powernv platforms or from an hcall on
2254 * pseries platforms.
2256 #ifdef CONFIG_PPC_PSERIES
2257 static int pseries_get_cpu_char(struct kvm_ppc_cpu_char *cp)
2259 struct h_cpu_char_result c;
2262 if (!machine_is(pseries))
2265 rc = plpar_get_cpu_characteristics(&c);
2266 if (rc == H_SUCCESS) {
2267 cp->character = c.character;
2268 cp->behaviour = c.behaviour;
2269 cp->character_mask = KVM_PPC_CPU_CHAR_SPEC_BAR_ORI31 |
2270 KVM_PPC_CPU_CHAR_BCCTRL_SERIALISED |
2271 KVM_PPC_CPU_CHAR_L1D_FLUSH_ORI30 |
2272 KVM_PPC_CPU_CHAR_L1D_FLUSH_TRIG2 |
2273 KVM_PPC_CPU_CHAR_L1D_THREAD_PRIV |
2274 KVM_PPC_CPU_CHAR_BR_HINT_HONOURED |
2275 KVM_PPC_CPU_CHAR_MTTRIG_THR_RECONF |
2276 KVM_PPC_CPU_CHAR_COUNT_CACHE_DIS |
2277 KVM_PPC_CPU_CHAR_BCCTR_FLUSH_ASSIST;
2278 cp->behaviour_mask = KVM_PPC_CPU_BEHAV_FAVOUR_SECURITY |
2279 KVM_PPC_CPU_BEHAV_L1D_FLUSH_PR |
2280 KVM_PPC_CPU_BEHAV_BNDS_CHK_SPEC_BAR |
2281 KVM_PPC_CPU_BEHAV_FLUSH_COUNT_CACHE;
2286 static int pseries_get_cpu_char(struct kvm_ppc_cpu_char *cp)
2292 static inline bool have_fw_feat(struct device_node *fw_features,
2293 const char *state, const char *name)
2295 struct device_node *np;
2298 np = of_get_child_by_name(fw_features, name);
2300 r = of_property_read_bool(np, state);
2306 static int kvmppc_get_cpu_char(struct kvm_ppc_cpu_char *cp)
2308 struct device_node *np, *fw_features;
2311 memset(cp, 0, sizeof(*cp));
2312 r = pseries_get_cpu_char(cp);
2316 np = of_find_node_by_name(NULL, "ibm,opal");
2318 fw_features = of_get_child_by_name(np, "fw-features");
2322 if (have_fw_feat(fw_features, "enabled",
2323 "inst-spec-barrier-ori31,31,0"))
2324 cp->character |= KVM_PPC_CPU_CHAR_SPEC_BAR_ORI31;
2325 if (have_fw_feat(fw_features, "enabled",
2326 "fw-bcctrl-serialized"))
2327 cp->character |= KVM_PPC_CPU_CHAR_BCCTRL_SERIALISED;
2328 if (have_fw_feat(fw_features, "enabled",
2329 "inst-l1d-flush-ori30,30,0"))
2330 cp->character |= KVM_PPC_CPU_CHAR_L1D_FLUSH_ORI30;
2331 if (have_fw_feat(fw_features, "enabled",
2332 "inst-l1d-flush-trig2"))
2333 cp->character |= KVM_PPC_CPU_CHAR_L1D_FLUSH_TRIG2;
2334 if (have_fw_feat(fw_features, "enabled",
2335 "fw-l1d-thread-split"))
2336 cp->character |= KVM_PPC_CPU_CHAR_L1D_THREAD_PRIV;
2337 if (have_fw_feat(fw_features, "enabled",
2338 "fw-count-cache-disabled"))
2339 cp->character |= KVM_PPC_CPU_CHAR_COUNT_CACHE_DIS;
2340 if (have_fw_feat(fw_features, "enabled",
2341 "fw-count-cache-flush-bcctr2,0,0"))
2342 cp->character |= KVM_PPC_CPU_CHAR_BCCTR_FLUSH_ASSIST;
2343 cp->character_mask = KVM_PPC_CPU_CHAR_SPEC_BAR_ORI31 |
2344 KVM_PPC_CPU_CHAR_BCCTRL_SERIALISED |
2345 KVM_PPC_CPU_CHAR_L1D_FLUSH_ORI30 |
2346 KVM_PPC_CPU_CHAR_L1D_FLUSH_TRIG2 |
2347 KVM_PPC_CPU_CHAR_L1D_THREAD_PRIV |
2348 KVM_PPC_CPU_CHAR_COUNT_CACHE_DIS |
2349 KVM_PPC_CPU_CHAR_BCCTR_FLUSH_ASSIST;
2351 if (have_fw_feat(fw_features, "enabled",
2352 "speculation-policy-favor-security"))
2353 cp->behaviour |= KVM_PPC_CPU_BEHAV_FAVOUR_SECURITY;
2354 if (!have_fw_feat(fw_features, "disabled",
2355 "needs-l1d-flush-msr-pr-0-to-1"))
2356 cp->behaviour |= KVM_PPC_CPU_BEHAV_L1D_FLUSH_PR;
2357 if (!have_fw_feat(fw_features, "disabled",
2358 "needs-spec-barrier-for-bound-checks"))
2359 cp->behaviour |= KVM_PPC_CPU_BEHAV_BNDS_CHK_SPEC_BAR;
2360 if (have_fw_feat(fw_features, "enabled",
2361 "needs-count-cache-flush-on-context-switch"))
2362 cp->behaviour |= KVM_PPC_CPU_BEHAV_FLUSH_COUNT_CACHE;
2363 cp->behaviour_mask = KVM_PPC_CPU_BEHAV_FAVOUR_SECURITY |
2364 KVM_PPC_CPU_BEHAV_L1D_FLUSH_PR |
2365 KVM_PPC_CPU_BEHAV_BNDS_CHK_SPEC_BAR |
2366 KVM_PPC_CPU_BEHAV_FLUSH_COUNT_CACHE;
2368 of_node_put(fw_features);
2375 long kvm_arch_vm_ioctl(struct file *filp,
2376 unsigned int ioctl, unsigned long arg)
2378 struct kvm *kvm __maybe_unused = filp->private_data;
2379 void __user *argp = (void __user *)arg;
2383 case KVM_PPC_GET_PVINFO: {
2384 struct kvm_ppc_pvinfo pvinfo;
2385 memset(&pvinfo, 0, sizeof(pvinfo));
2386 r = kvm_vm_ioctl_get_pvinfo(&pvinfo);
2387 if (copy_to_user(argp, &pvinfo, sizeof(pvinfo))) {
2394 #ifdef CONFIG_SPAPR_TCE_IOMMU
2395 case KVM_CREATE_SPAPR_TCE_64: {
2396 struct kvm_create_spapr_tce_64 create_tce_64;
2399 if (copy_from_user(&create_tce_64, argp, sizeof(create_tce_64)))
2401 if (create_tce_64.flags) {
2405 r = kvm_vm_ioctl_create_spapr_tce(kvm, &create_tce_64);
2408 case KVM_CREATE_SPAPR_TCE: {
2409 struct kvm_create_spapr_tce create_tce;
2410 struct kvm_create_spapr_tce_64 create_tce_64;
2413 if (copy_from_user(&create_tce, argp, sizeof(create_tce)))
2416 create_tce_64.liobn = create_tce.liobn;
2417 create_tce_64.page_shift = IOMMU_PAGE_SHIFT_4K;
2418 create_tce_64.offset = 0;
2419 create_tce_64.size = create_tce.window_size >>
2420 IOMMU_PAGE_SHIFT_4K;
2421 create_tce_64.flags = 0;
2422 r = kvm_vm_ioctl_create_spapr_tce(kvm, &create_tce_64);
2426 #ifdef CONFIG_PPC_BOOK3S_64
2427 case KVM_PPC_GET_SMMU_INFO: {
2428 struct kvm_ppc_smmu_info info;
2429 struct kvm *kvm = filp->private_data;
2431 memset(&info, 0, sizeof(info));
2432 r = kvm->arch.kvm_ops->get_smmu_info(kvm, &info);
2433 if (r >= 0 && copy_to_user(argp, &info, sizeof(info)))
2437 case KVM_PPC_RTAS_DEFINE_TOKEN: {
2438 struct kvm *kvm = filp->private_data;
2440 r = kvm_vm_ioctl_rtas_define_token(kvm, argp);
2443 case KVM_PPC_CONFIGURE_V3_MMU: {
2444 struct kvm *kvm = filp->private_data;
2445 struct kvm_ppc_mmuv3_cfg cfg;
2448 if (!kvm->arch.kvm_ops->configure_mmu)
2451 if (copy_from_user(&cfg, argp, sizeof(cfg)))
2453 r = kvm->arch.kvm_ops->configure_mmu(kvm, &cfg);
2456 case KVM_PPC_GET_RMMU_INFO: {
2457 struct kvm *kvm = filp->private_data;
2458 struct kvm_ppc_rmmu_info info;
2461 if (!kvm->arch.kvm_ops->get_rmmu_info)
2463 r = kvm->arch.kvm_ops->get_rmmu_info(kvm, &info);
2464 if (r >= 0 && copy_to_user(argp, &info, sizeof(info)))
2468 case KVM_PPC_GET_CPU_CHAR: {
2469 struct kvm_ppc_cpu_char cpuchar;
2471 r = kvmppc_get_cpu_char(&cpuchar);
2472 if (r >= 0 && copy_to_user(argp, &cpuchar, sizeof(cpuchar)))
2476 case KVM_PPC_SVM_OFF: {
2477 struct kvm *kvm = filp->private_data;
2480 if (!kvm->arch.kvm_ops->svm_off)
2483 r = kvm->arch.kvm_ops->svm_off(kvm);
2487 struct kvm *kvm = filp->private_data;
2488 r = kvm->arch.kvm_ops->arch_vm_ioctl(filp, ioctl, arg);
2490 #else /* CONFIG_PPC_BOOK3S_64 */
2499 static DEFINE_IDA(lpid_inuse);
2500 static unsigned long nr_lpids;
2502 long kvmppc_alloc_lpid(void)
2506 /* The host LPID must always be 0 (allocation starts at 1) */
2507 lpid = ida_alloc_range(&lpid_inuse, 1, nr_lpids - 1, GFP_KERNEL);
2509 if (lpid == -ENOMEM)
2510 pr_err("%s: Out of memory\n", __func__);
2512 pr_err("%s: No LPIDs free\n", __func__);
2518 EXPORT_SYMBOL_GPL(kvmppc_alloc_lpid);
2520 void kvmppc_free_lpid(long lpid)
2522 ida_free(&lpid_inuse, lpid);
2524 EXPORT_SYMBOL_GPL(kvmppc_free_lpid);
2526 /* nr_lpids_param includes the host LPID */
2527 void kvmppc_init_lpid(unsigned long nr_lpids_param)
2529 nr_lpids = nr_lpids_param;
2531 EXPORT_SYMBOL_GPL(kvmppc_init_lpid);
2533 int kvm_arch_init(void *opaque)
2538 EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_ppc_instr);
2540 void kvm_arch_create_vcpu_debugfs(struct kvm_vcpu *vcpu, struct dentry *debugfs_dentry)
2542 if (vcpu->kvm->arch.kvm_ops->create_vcpu_debugfs)
2543 vcpu->kvm->arch.kvm_ops->create_vcpu_debugfs(vcpu, debugfs_dentry);
2546 int kvm_arch_create_vm_debugfs(struct kvm *kvm)
2548 if (kvm->arch.kvm_ops->create_vm_debugfs)
2549 kvm->arch.kvm_ops->create_vm_debugfs(kvm);