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>
39 #include "../mm/mmu_decl.h"
41 #define CREATE_TRACE_POINTS
44 struct kvmppc_ops *kvmppc_hv_ops;
45 EXPORT_SYMBOL_GPL(kvmppc_hv_ops);
46 struct kvmppc_ops *kvmppc_pr_ops;
47 EXPORT_SYMBOL_GPL(kvmppc_pr_ops);
50 int kvm_arch_vcpu_runnable(struct kvm_vcpu *v)
52 return !!(v->arch.pending_exceptions) || kvm_request_pending(v);
55 bool kvm_arch_dy_runnable(struct kvm_vcpu *vcpu)
57 return kvm_arch_vcpu_runnable(vcpu);
60 bool kvm_arch_vcpu_in_kernel(struct kvm_vcpu *vcpu)
65 int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu)
71 * Common checks before entering the guest world. Call with interrupts
76 * == 1 if we're ready to go into guest state
77 * <= 0 if we need to go back to the host with return value
79 int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu)
83 WARN_ON(irqs_disabled());
94 if (signal_pending(current)) {
95 kvmppc_account_exit(vcpu, SIGNAL_EXITS);
96 vcpu->run->exit_reason = KVM_EXIT_INTR;
101 vcpu->mode = IN_GUEST_MODE;
104 * Reading vcpu->requests must happen after setting vcpu->mode,
105 * so we don't miss a request because the requester sees
106 * OUTSIDE_GUEST_MODE and assumes we'll be checking requests
107 * before next entering the guest (and thus doesn't IPI).
108 * This also orders the write to mode from any reads
109 * to the page tables done while the VCPU is running.
110 * Please see the comment in kvm_flush_remote_tlbs.
114 if (kvm_request_pending(vcpu)) {
115 /* Make sure we process requests preemptable */
117 trace_kvm_check_requests(vcpu);
118 r = kvmppc_core_check_requests(vcpu);
125 if (kvmppc_core_prepare_to_enter(vcpu)) {
126 /* interrupts got enabled in between, so we
127 are back at square 1 */
131 guest_enter_irqoff();
139 EXPORT_SYMBOL_GPL(kvmppc_prepare_to_enter);
141 #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE)
142 static void kvmppc_swab_shared(struct kvm_vcpu *vcpu)
144 struct kvm_vcpu_arch_shared *shared = vcpu->arch.shared;
147 shared->sprg0 = swab64(shared->sprg0);
148 shared->sprg1 = swab64(shared->sprg1);
149 shared->sprg2 = swab64(shared->sprg2);
150 shared->sprg3 = swab64(shared->sprg3);
151 shared->srr0 = swab64(shared->srr0);
152 shared->srr1 = swab64(shared->srr1);
153 shared->dar = swab64(shared->dar);
154 shared->msr = swab64(shared->msr);
155 shared->dsisr = swab32(shared->dsisr);
156 shared->int_pending = swab32(shared->int_pending);
157 for (i = 0; i < ARRAY_SIZE(shared->sr); i++)
158 shared->sr[i] = swab32(shared->sr[i]);
162 int kvmppc_kvm_pv(struct kvm_vcpu *vcpu)
164 int nr = kvmppc_get_gpr(vcpu, 11);
166 unsigned long __maybe_unused param1 = kvmppc_get_gpr(vcpu, 3);
167 unsigned long __maybe_unused param2 = kvmppc_get_gpr(vcpu, 4);
168 unsigned long __maybe_unused param3 = kvmppc_get_gpr(vcpu, 5);
169 unsigned long __maybe_unused param4 = kvmppc_get_gpr(vcpu, 6);
170 unsigned long r2 = 0;
172 if (!(kvmppc_get_msr(vcpu) & MSR_SF)) {
174 param1 &= 0xffffffff;
175 param2 &= 0xffffffff;
176 param3 &= 0xffffffff;
177 param4 &= 0xffffffff;
181 case KVM_HCALL_TOKEN(KVM_HC_PPC_MAP_MAGIC_PAGE):
183 #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE)
184 /* Book3S can be little endian, find it out here */
185 int shared_big_endian = true;
186 if (vcpu->arch.intr_msr & MSR_LE)
187 shared_big_endian = false;
188 if (shared_big_endian != vcpu->arch.shared_big_endian)
189 kvmppc_swab_shared(vcpu);
190 vcpu->arch.shared_big_endian = shared_big_endian;
193 if (!(param2 & MAGIC_PAGE_FLAG_NOT_MAPPED_NX)) {
195 * Older versions of the Linux magic page code had
196 * a bug where they would map their trampoline code
197 * NX. If that's the case, remove !PR NX capability.
199 vcpu->arch.disable_kernel_nx = true;
200 kvm_make_request(KVM_REQ_TLB_FLUSH, vcpu);
203 vcpu->arch.magic_page_pa = param1 & ~0xfffULL;
204 vcpu->arch.magic_page_ea = param2 & ~0xfffULL;
206 #ifdef CONFIG_PPC_64K_PAGES
208 * Make sure our 4k magic page is in the same window of a 64k
209 * page within the guest and within the host's page.
211 if ((vcpu->arch.magic_page_pa & 0xf000) !=
212 ((ulong)vcpu->arch.shared & 0xf000)) {
213 void *old_shared = vcpu->arch.shared;
214 ulong shared = (ulong)vcpu->arch.shared;
218 shared |= vcpu->arch.magic_page_pa & 0xf000;
219 new_shared = (void*)shared;
220 memcpy(new_shared, old_shared, 0x1000);
221 vcpu->arch.shared = new_shared;
225 r2 = KVM_MAGIC_FEAT_SR | KVM_MAGIC_FEAT_MAS0_TO_SPRG7;
230 case KVM_HCALL_TOKEN(KVM_HC_FEATURES):
232 #if defined(CONFIG_PPC_BOOK3S) || defined(CONFIG_KVM_E500V2)
233 r2 |= (1 << KVM_FEATURE_MAGIC_PAGE);
236 /* Second return value is in r4 */
238 case EV_HCALL_TOKEN(EV_IDLE):
241 kvm_clear_request(KVM_REQ_UNHALT, vcpu);
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;
788 vcpu->arch.dec_expires = get_tb();
790 #ifdef CONFIG_KVM_EXIT_TIMING
791 mutex_init(&vcpu->arch.exit_timing_lock);
793 err = kvmppc_subarch_vcpu_init(vcpu);
797 err = kvmppc_core_vcpu_create(vcpu);
799 goto out_vcpu_uninit;
801 rcuwait_init(&vcpu->arch.wait);
802 vcpu->arch.waitp = &vcpu->arch.wait;
806 kvmppc_subarch_vcpu_uninit(vcpu);
810 void kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu)
814 void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu)
816 /* Make sure we're not using the vcpu anymore */
817 hrtimer_cancel(&vcpu->arch.dec_timer);
819 switch (vcpu->arch.irq_type) {
820 case KVMPPC_IRQ_MPIC:
821 kvmppc_mpic_disconnect_vcpu(vcpu->arch.mpic, vcpu);
823 case KVMPPC_IRQ_XICS:
825 kvmppc_xive_cleanup_vcpu(vcpu);
827 kvmppc_xics_free_icp(vcpu);
829 case KVMPPC_IRQ_XIVE:
830 kvmppc_xive_native_cleanup_vcpu(vcpu);
834 kvmppc_core_vcpu_free(vcpu);
836 kvmppc_subarch_vcpu_uninit(vcpu);
839 int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu)
841 return kvmppc_core_pending_dec(vcpu);
844 void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
848 * vrsave (formerly usprg0) isn't used by Linux, but may
849 * be used by the guest.
851 * On non-booke this is associated with Altivec and
852 * is handled by code in book3s.c.
854 mtspr(SPRN_VRSAVE, vcpu->arch.vrsave);
856 kvmppc_core_vcpu_load(vcpu, cpu);
859 void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu)
861 kvmppc_core_vcpu_put(vcpu);
863 vcpu->arch.vrsave = mfspr(SPRN_VRSAVE);
868 * irq_bypass_add_producer and irq_bypass_del_producer are only
869 * useful if the architecture supports PCI passthrough.
870 * irq_bypass_stop and irq_bypass_start are not needed and so
871 * kvm_ops are not defined for them.
873 bool kvm_arch_has_irq_bypass(void)
875 return ((kvmppc_hv_ops && kvmppc_hv_ops->irq_bypass_add_producer) ||
876 (kvmppc_pr_ops && kvmppc_pr_ops->irq_bypass_add_producer));
879 int kvm_arch_irq_bypass_add_producer(struct irq_bypass_consumer *cons,
880 struct irq_bypass_producer *prod)
882 struct kvm_kernel_irqfd *irqfd =
883 container_of(cons, struct kvm_kernel_irqfd, consumer);
884 struct kvm *kvm = irqfd->kvm;
886 if (kvm->arch.kvm_ops->irq_bypass_add_producer)
887 return kvm->arch.kvm_ops->irq_bypass_add_producer(cons, prod);
892 void kvm_arch_irq_bypass_del_producer(struct irq_bypass_consumer *cons,
893 struct irq_bypass_producer *prod)
895 struct kvm_kernel_irqfd *irqfd =
896 container_of(cons, struct kvm_kernel_irqfd, consumer);
897 struct kvm *kvm = irqfd->kvm;
899 if (kvm->arch.kvm_ops->irq_bypass_del_producer)
900 kvm->arch.kvm_ops->irq_bypass_del_producer(cons, prod);
904 static inline int kvmppc_get_vsr_dword_offset(int index)
908 if ((index != 0) && (index != 1))
920 static inline int kvmppc_get_vsr_word_offset(int index)
924 if ((index > 3) || (index < 0))
935 static inline void kvmppc_set_vsr_dword(struct kvm_vcpu *vcpu,
938 union kvmppc_one_reg val;
939 int offset = kvmppc_get_vsr_dword_offset(vcpu->arch.mmio_vsx_offset);
940 int index = vcpu->arch.io_gpr & KVM_MMIO_REG_MASK;
946 val.vval = VCPU_VSX_VR(vcpu, index - 32);
947 val.vsxval[offset] = gpr;
948 VCPU_VSX_VR(vcpu, index - 32) = val.vval;
950 VCPU_VSX_FPR(vcpu, index, offset) = gpr;
954 static inline void kvmppc_set_vsr_dword_dump(struct kvm_vcpu *vcpu,
957 union kvmppc_one_reg val;
958 int index = vcpu->arch.io_gpr & KVM_MMIO_REG_MASK;
961 val.vval = VCPU_VSX_VR(vcpu, index - 32);
964 VCPU_VSX_VR(vcpu, index - 32) = val.vval;
966 VCPU_VSX_FPR(vcpu, index, 0) = gpr;
967 VCPU_VSX_FPR(vcpu, index, 1) = gpr;
971 static inline void kvmppc_set_vsr_word_dump(struct kvm_vcpu *vcpu,
974 union kvmppc_one_reg val;
975 int index = vcpu->arch.io_gpr & KVM_MMIO_REG_MASK;
978 val.vsx32val[0] = gpr;
979 val.vsx32val[1] = gpr;
980 val.vsx32val[2] = gpr;
981 val.vsx32val[3] = gpr;
982 VCPU_VSX_VR(vcpu, index - 32) = val.vval;
984 val.vsx32val[0] = gpr;
985 val.vsx32val[1] = gpr;
986 VCPU_VSX_FPR(vcpu, index, 0) = val.vsxval[0];
987 VCPU_VSX_FPR(vcpu, index, 1) = val.vsxval[0];
991 static inline void kvmppc_set_vsr_word(struct kvm_vcpu *vcpu,
994 union kvmppc_one_reg val;
995 int offset = kvmppc_get_vsr_word_offset(vcpu->arch.mmio_vsx_offset);
996 int index = vcpu->arch.io_gpr & KVM_MMIO_REG_MASK;
997 int dword_offset, word_offset;
1003 val.vval = VCPU_VSX_VR(vcpu, index - 32);
1004 val.vsx32val[offset] = gpr32;
1005 VCPU_VSX_VR(vcpu, index - 32) = val.vval;
1007 dword_offset = offset / 2;
1008 word_offset = offset % 2;
1009 val.vsxval[0] = VCPU_VSX_FPR(vcpu, index, dword_offset);
1010 val.vsx32val[word_offset] = gpr32;
1011 VCPU_VSX_FPR(vcpu, index, dword_offset) = val.vsxval[0];
1014 #endif /* CONFIG_VSX */
1016 #ifdef CONFIG_ALTIVEC
1017 static inline int kvmppc_get_vmx_offset_generic(struct kvm_vcpu *vcpu,
1018 int index, int element_size)
1021 int elts = sizeof(vector128)/element_size;
1023 if ((index < 0) || (index >= elts))
1026 if (kvmppc_need_byteswap(vcpu))
1027 offset = elts - index - 1;
1034 static inline int kvmppc_get_vmx_dword_offset(struct kvm_vcpu *vcpu,
1037 return kvmppc_get_vmx_offset_generic(vcpu, index, 8);
1040 static inline int kvmppc_get_vmx_word_offset(struct kvm_vcpu *vcpu,
1043 return kvmppc_get_vmx_offset_generic(vcpu, index, 4);
1046 static inline int kvmppc_get_vmx_hword_offset(struct kvm_vcpu *vcpu,
1049 return kvmppc_get_vmx_offset_generic(vcpu, index, 2);
1052 static inline int kvmppc_get_vmx_byte_offset(struct kvm_vcpu *vcpu,
1055 return kvmppc_get_vmx_offset_generic(vcpu, index, 1);
1059 static inline void kvmppc_set_vmx_dword(struct kvm_vcpu *vcpu,
1062 union kvmppc_one_reg val;
1063 int offset = kvmppc_get_vmx_dword_offset(vcpu,
1064 vcpu->arch.mmio_vmx_offset);
1065 int index = vcpu->arch.io_gpr & KVM_MMIO_REG_MASK;
1070 val.vval = VCPU_VSX_VR(vcpu, index);
1071 val.vsxval[offset] = gpr;
1072 VCPU_VSX_VR(vcpu, index) = val.vval;
1075 static inline void kvmppc_set_vmx_word(struct kvm_vcpu *vcpu,
1078 union kvmppc_one_reg val;
1079 int offset = kvmppc_get_vmx_word_offset(vcpu,
1080 vcpu->arch.mmio_vmx_offset);
1081 int index = vcpu->arch.io_gpr & KVM_MMIO_REG_MASK;
1086 val.vval = VCPU_VSX_VR(vcpu, index);
1087 val.vsx32val[offset] = gpr32;
1088 VCPU_VSX_VR(vcpu, index) = val.vval;
1091 static inline void kvmppc_set_vmx_hword(struct kvm_vcpu *vcpu,
1094 union kvmppc_one_reg val;
1095 int offset = kvmppc_get_vmx_hword_offset(vcpu,
1096 vcpu->arch.mmio_vmx_offset);
1097 int index = vcpu->arch.io_gpr & KVM_MMIO_REG_MASK;
1102 val.vval = VCPU_VSX_VR(vcpu, index);
1103 val.vsx16val[offset] = gpr16;
1104 VCPU_VSX_VR(vcpu, index) = val.vval;
1107 static inline void kvmppc_set_vmx_byte(struct kvm_vcpu *vcpu,
1110 union kvmppc_one_reg val;
1111 int offset = kvmppc_get_vmx_byte_offset(vcpu,
1112 vcpu->arch.mmio_vmx_offset);
1113 int index = vcpu->arch.io_gpr & KVM_MMIO_REG_MASK;
1118 val.vval = VCPU_VSX_VR(vcpu, index);
1119 val.vsx8val[offset] = gpr8;
1120 VCPU_VSX_VR(vcpu, index) = val.vval;
1122 #endif /* CONFIG_ALTIVEC */
1124 #ifdef CONFIG_PPC_FPU
1125 static inline u64 sp_to_dp(u32 fprs)
1131 asm ("lfs%U1%X1 0,%1; stfd%U0%X0 0,%0" : "=m<>" (fprd) : "m<>" (fprs)
1137 static inline u32 dp_to_sp(u64 fprd)
1143 asm ("lfd%U1%X1 0,%1; stfs%U0%X0 0,%0" : "=m<>" (fprs) : "m<>" (fprd)
1150 #define sp_to_dp(x) (x)
1151 #define dp_to_sp(x) (x)
1152 #endif /* CONFIG_PPC_FPU */
1154 static void kvmppc_complete_mmio_load(struct kvm_vcpu *vcpu)
1156 struct kvm_run *run = vcpu->run;
1159 if (run->mmio.len > sizeof(gpr))
1162 if (!vcpu->arch.mmio_host_swabbed) {
1163 switch (run->mmio.len) {
1164 case 8: gpr = *(u64 *)run->mmio.data; break;
1165 case 4: gpr = *(u32 *)run->mmio.data; break;
1166 case 2: gpr = *(u16 *)run->mmio.data; break;
1167 case 1: gpr = *(u8 *)run->mmio.data; break;
1170 switch (run->mmio.len) {
1171 case 8: gpr = swab64(*(u64 *)run->mmio.data); break;
1172 case 4: gpr = swab32(*(u32 *)run->mmio.data); break;
1173 case 2: gpr = swab16(*(u16 *)run->mmio.data); break;
1174 case 1: gpr = *(u8 *)run->mmio.data; break;
1178 /* conversion between single and double precision */
1179 if ((vcpu->arch.mmio_sp64_extend) && (run->mmio.len == 4))
1180 gpr = sp_to_dp(gpr);
1182 if (vcpu->arch.mmio_sign_extend) {
1183 switch (run->mmio.len) {
1186 gpr = (s64)(s32)gpr;
1190 gpr = (s64)(s16)gpr;
1198 switch (vcpu->arch.io_gpr & KVM_MMIO_REG_EXT_MASK) {
1199 case KVM_MMIO_REG_GPR:
1200 kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, gpr);
1202 case KVM_MMIO_REG_FPR:
1203 if (vcpu->kvm->arch.kvm_ops->giveup_ext)
1204 vcpu->kvm->arch.kvm_ops->giveup_ext(vcpu, MSR_FP);
1206 VCPU_FPR(vcpu, vcpu->arch.io_gpr & KVM_MMIO_REG_MASK) = gpr;
1208 #ifdef CONFIG_PPC_BOOK3S
1209 case KVM_MMIO_REG_QPR:
1210 vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr;
1212 case KVM_MMIO_REG_FQPR:
1213 VCPU_FPR(vcpu, vcpu->arch.io_gpr & KVM_MMIO_REG_MASK) = gpr;
1214 vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr;
1218 case KVM_MMIO_REG_VSX:
1219 if (vcpu->kvm->arch.kvm_ops->giveup_ext)
1220 vcpu->kvm->arch.kvm_ops->giveup_ext(vcpu, MSR_VSX);
1222 if (vcpu->arch.mmio_copy_type == KVMPPC_VSX_COPY_DWORD)
1223 kvmppc_set_vsr_dword(vcpu, gpr);
1224 else if (vcpu->arch.mmio_copy_type == KVMPPC_VSX_COPY_WORD)
1225 kvmppc_set_vsr_word(vcpu, gpr);
1226 else if (vcpu->arch.mmio_copy_type ==
1227 KVMPPC_VSX_COPY_DWORD_LOAD_DUMP)
1228 kvmppc_set_vsr_dword_dump(vcpu, gpr);
1229 else if (vcpu->arch.mmio_copy_type ==
1230 KVMPPC_VSX_COPY_WORD_LOAD_DUMP)
1231 kvmppc_set_vsr_word_dump(vcpu, gpr);
1234 #ifdef CONFIG_ALTIVEC
1235 case KVM_MMIO_REG_VMX:
1236 if (vcpu->kvm->arch.kvm_ops->giveup_ext)
1237 vcpu->kvm->arch.kvm_ops->giveup_ext(vcpu, MSR_VEC);
1239 if (vcpu->arch.mmio_copy_type == KVMPPC_VMX_COPY_DWORD)
1240 kvmppc_set_vmx_dword(vcpu, gpr);
1241 else if (vcpu->arch.mmio_copy_type == KVMPPC_VMX_COPY_WORD)
1242 kvmppc_set_vmx_word(vcpu, gpr);
1243 else if (vcpu->arch.mmio_copy_type ==
1244 KVMPPC_VMX_COPY_HWORD)
1245 kvmppc_set_vmx_hword(vcpu, gpr);
1246 else if (vcpu->arch.mmio_copy_type ==
1247 KVMPPC_VMX_COPY_BYTE)
1248 kvmppc_set_vmx_byte(vcpu, gpr);
1251 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
1252 case KVM_MMIO_REG_NESTED_GPR:
1253 if (kvmppc_need_byteswap(vcpu))
1255 kvm_vcpu_write_guest(vcpu, vcpu->arch.nested_io_gpr, &gpr,
1264 static int __kvmppc_handle_load(struct kvm_vcpu *vcpu,
1265 unsigned int rt, unsigned int bytes,
1266 int is_default_endian, int sign_extend)
1268 struct kvm_run *run = vcpu->run;
1272 /* Pity C doesn't have a logical XOR operator */
1273 if (kvmppc_need_byteswap(vcpu)) {
1274 host_swabbed = is_default_endian;
1276 host_swabbed = !is_default_endian;
1279 if (bytes > sizeof(run->mmio.data))
1280 return EMULATE_FAIL;
1282 run->mmio.phys_addr = vcpu->arch.paddr_accessed;
1283 run->mmio.len = bytes;
1284 run->mmio.is_write = 0;
1286 vcpu->arch.io_gpr = rt;
1287 vcpu->arch.mmio_host_swabbed = host_swabbed;
1288 vcpu->mmio_needed = 1;
1289 vcpu->mmio_is_write = 0;
1290 vcpu->arch.mmio_sign_extend = sign_extend;
1292 idx = srcu_read_lock(&vcpu->kvm->srcu);
1294 ret = kvm_io_bus_read(vcpu, KVM_MMIO_BUS, run->mmio.phys_addr,
1295 bytes, &run->mmio.data);
1297 srcu_read_unlock(&vcpu->kvm->srcu, idx);
1300 kvmppc_complete_mmio_load(vcpu);
1301 vcpu->mmio_needed = 0;
1302 return EMULATE_DONE;
1305 return EMULATE_DO_MMIO;
1308 int kvmppc_handle_load(struct kvm_vcpu *vcpu,
1309 unsigned int rt, unsigned int bytes,
1310 int is_default_endian)
1312 return __kvmppc_handle_load(vcpu, rt, bytes, is_default_endian, 0);
1314 EXPORT_SYMBOL_GPL(kvmppc_handle_load);
1316 /* Same as above, but sign extends */
1317 int kvmppc_handle_loads(struct kvm_vcpu *vcpu,
1318 unsigned int rt, unsigned int bytes,
1319 int is_default_endian)
1321 return __kvmppc_handle_load(vcpu, rt, bytes, is_default_endian, 1);
1325 int kvmppc_handle_vsx_load(struct kvm_vcpu *vcpu,
1326 unsigned int rt, unsigned int bytes,
1327 int is_default_endian, int mmio_sign_extend)
1329 enum emulation_result emulated = EMULATE_DONE;
1331 /* Currently, mmio_vsx_copy_nums only allowed to be 4 or less */
1332 if (vcpu->arch.mmio_vsx_copy_nums > 4)
1333 return EMULATE_FAIL;
1335 while (vcpu->arch.mmio_vsx_copy_nums) {
1336 emulated = __kvmppc_handle_load(vcpu, rt, bytes,
1337 is_default_endian, mmio_sign_extend);
1339 if (emulated != EMULATE_DONE)
1342 vcpu->arch.paddr_accessed += vcpu->run->mmio.len;
1344 vcpu->arch.mmio_vsx_copy_nums--;
1345 vcpu->arch.mmio_vsx_offset++;
1349 #endif /* CONFIG_VSX */
1351 int kvmppc_handle_store(struct kvm_vcpu *vcpu,
1352 u64 val, unsigned int bytes, int is_default_endian)
1354 struct kvm_run *run = vcpu->run;
1355 void *data = run->mmio.data;
1359 /* Pity C doesn't have a logical XOR operator */
1360 if (kvmppc_need_byteswap(vcpu)) {
1361 host_swabbed = is_default_endian;
1363 host_swabbed = !is_default_endian;
1366 if (bytes > sizeof(run->mmio.data))
1367 return EMULATE_FAIL;
1369 run->mmio.phys_addr = vcpu->arch.paddr_accessed;
1370 run->mmio.len = bytes;
1371 run->mmio.is_write = 1;
1372 vcpu->mmio_needed = 1;
1373 vcpu->mmio_is_write = 1;
1375 if ((vcpu->arch.mmio_sp64_extend) && (bytes == 4))
1376 val = dp_to_sp(val);
1378 /* Store the value at the lowest bytes in 'data'. */
1379 if (!host_swabbed) {
1381 case 8: *(u64 *)data = val; break;
1382 case 4: *(u32 *)data = val; break;
1383 case 2: *(u16 *)data = val; break;
1384 case 1: *(u8 *)data = val; break;
1388 case 8: *(u64 *)data = swab64(val); break;
1389 case 4: *(u32 *)data = swab32(val); break;
1390 case 2: *(u16 *)data = swab16(val); break;
1391 case 1: *(u8 *)data = val; break;
1395 idx = srcu_read_lock(&vcpu->kvm->srcu);
1397 ret = kvm_io_bus_write(vcpu, KVM_MMIO_BUS, run->mmio.phys_addr,
1398 bytes, &run->mmio.data);
1400 srcu_read_unlock(&vcpu->kvm->srcu, idx);
1403 vcpu->mmio_needed = 0;
1404 return EMULATE_DONE;
1407 return EMULATE_DO_MMIO;
1409 EXPORT_SYMBOL_GPL(kvmppc_handle_store);
1412 static inline int kvmppc_get_vsr_data(struct kvm_vcpu *vcpu, int rs, u64 *val)
1414 u32 dword_offset, word_offset;
1415 union kvmppc_one_reg reg;
1417 int copy_type = vcpu->arch.mmio_copy_type;
1420 switch (copy_type) {
1421 case KVMPPC_VSX_COPY_DWORD:
1423 kvmppc_get_vsr_dword_offset(vcpu->arch.mmio_vsx_offset);
1425 if (vsx_offset == -1) {
1431 *val = VCPU_VSX_FPR(vcpu, rs, vsx_offset);
1433 reg.vval = VCPU_VSX_VR(vcpu, rs - 32);
1434 *val = reg.vsxval[vsx_offset];
1438 case KVMPPC_VSX_COPY_WORD:
1440 kvmppc_get_vsr_word_offset(vcpu->arch.mmio_vsx_offset);
1442 if (vsx_offset == -1) {
1448 dword_offset = vsx_offset / 2;
1449 word_offset = vsx_offset % 2;
1450 reg.vsxval[0] = VCPU_VSX_FPR(vcpu, rs, dword_offset);
1451 *val = reg.vsx32val[word_offset];
1453 reg.vval = VCPU_VSX_VR(vcpu, rs - 32);
1454 *val = reg.vsx32val[vsx_offset];
1466 int kvmppc_handle_vsx_store(struct kvm_vcpu *vcpu,
1467 int rs, unsigned int bytes, int is_default_endian)
1470 enum emulation_result emulated = EMULATE_DONE;
1472 vcpu->arch.io_gpr = rs;
1474 /* Currently, mmio_vsx_copy_nums only allowed to be 4 or less */
1475 if (vcpu->arch.mmio_vsx_copy_nums > 4)
1476 return EMULATE_FAIL;
1478 while (vcpu->arch.mmio_vsx_copy_nums) {
1479 if (kvmppc_get_vsr_data(vcpu, rs, &val) == -1)
1480 return EMULATE_FAIL;
1482 emulated = kvmppc_handle_store(vcpu,
1483 val, bytes, is_default_endian);
1485 if (emulated != EMULATE_DONE)
1488 vcpu->arch.paddr_accessed += vcpu->run->mmio.len;
1490 vcpu->arch.mmio_vsx_copy_nums--;
1491 vcpu->arch.mmio_vsx_offset++;
1497 static int kvmppc_emulate_mmio_vsx_loadstore(struct kvm_vcpu *vcpu)
1499 struct kvm_run *run = vcpu->run;
1500 enum emulation_result emulated = EMULATE_FAIL;
1503 vcpu->arch.paddr_accessed += run->mmio.len;
1505 if (!vcpu->mmio_is_write) {
1506 emulated = kvmppc_handle_vsx_load(vcpu, vcpu->arch.io_gpr,
1507 run->mmio.len, 1, vcpu->arch.mmio_sign_extend);
1509 emulated = kvmppc_handle_vsx_store(vcpu,
1510 vcpu->arch.io_gpr, run->mmio.len, 1);
1514 case EMULATE_DO_MMIO:
1515 run->exit_reason = KVM_EXIT_MMIO;
1519 pr_info("KVM: MMIO emulation failed (VSX repeat)\n");
1520 run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
1521 run->internal.suberror = KVM_INTERNAL_ERROR_EMULATION;
1530 #endif /* CONFIG_VSX */
1532 #ifdef CONFIG_ALTIVEC
1533 int kvmppc_handle_vmx_load(struct kvm_vcpu *vcpu,
1534 unsigned int rt, unsigned int bytes, int is_default_endian)
1536 enum emulation_result emulated = EMULATE_DONE;
1538 if (vcpu->arch.mmio_vmx_copy_nums > 2)
1539 return EMULATE_FAIL;
1541 while (vcpu->arch.mmio_vmx_copy_nums) {
1542 emulated = __kvmppc_handle_load(vcpu, rt, bytes,
1543 is_default_endian, 0);
1545 if (emulated != EMULATE_DONE)
1548 vcpu->arch.paddr_accessed += vcpu->run->mmio.len;
1549 vcpu->arch.mmio_vmx_copy_nums--;
1550 vcpu->arch.mmio_vmx_offset++;
1556 static int kvmppc_get_vmx_dword(struct kvm_vcpu *vcpu, int index, u64 *val)
1558 union kvmppc_one_reg reg;
1563 kvmppc_get_vmx_dword_offset(vcpu, vcpu->arch.mmio_vmx_offset);
1565 if (vmx_offset == -1)
1568 reg.vval = VCPU_VSX_VR(vcpu, index);
1569 *val = reg.vsxval[vmx_offset];
1574 static int kvmppc_get_vmx_word(struct kvm_vcpu *vcpu, int index, u64 *val)
1576 union kvmppc_one_reg reg;
1581 kvmppc_get_vmx_word_offset(vcpu, vcpu->arch.mmio_vmx_offset);
1583 if (vmx_offset == -1)
1586 reg.vval = VCPU_VSX_VR(vcpu, index);
1587 *val = reg.vsx32val[vmx_offset];
1592 static int kvmppc_get_vmx_hword(struct kvm_vcpu *vcpu, int index, u64 *val)
1594 union kvmppc_one_reg reg;
1599 kvmppc_get_vmx_hword_offset(vcpu, vcpu->arch.mmio_vmx_offset);
1601 if (vmx_offset == -1)
1604 reg.vval = VCPU_VSX_VR(vcpu, index);
1605 *val = reg.vsx16val[vmx_offset];
1610 static int kvmppc_get_vmx_byte(struct kvm_vcpu *vcpu, int index, u64 *val)
1612 union kvmppc_one_reg reg;
1617 kvmppc_get_vmx_byte_offset(vcpu, vcpu->arch.mmio_vmx_offset);
1619 if (vmx_offset == -1)
1622 reg.vval = VCPU_VSX_VR(vcpu, index);
1623 *val = reg.vsx8val[vmx_offset];
1628 int kvmppc_handle_vmx_store(struct kvm_vcpu *vcpu,
1629 unsigned int rs, unsigned int bytes, int is_default_endian)
1632 unsigned int index = rs & KVM_MMIO_REG_MASK;
1633 enum emulation_result emulated = EMULATE_DONE;
1635 if (vcpu->arch.mmio_vmx_copy_nums > 2)
1636 return EMULATE_FAIL;
1638 vcpu->arch.io_gpr = rs;
1640 while (vcpu->arch.mmio_vmx_copy_nums) {
1641 switch (vcpu->arch.mmio_copy_type) {
1642 case KVMPPC_VMX_COPY_DWORD:
1643 if (kvmppc_get_vmx_dword(vcpu, index, &val) == -1)
1644 return EMULATE_FAIL;
1647 case KVMPPC_VMX_COPY_WORD:
1648 if (kvmppc_get_vmx_word(vcpu, index, &val) == -1)
1649 return EMULATE_FAIL;
1651 case KVMPPC_VMX_COPY_HWORD:
1652 if (kvmppc_get_vmx_hword(vcpu, index, &val) == -1)
1653 return EMULATE_FAIL;
1655 case KVMPPC_VMX_COPY_BYTE:
1656 if (kvmppc_get_vmx_byte(vcpu, index, &val) == -1)
1657 return EMULATE_FAIL;
1660 return EMULATE_FAIL;
1663 emulated = kvmppc_handle_store(vcpu, val, bytes,
1665 if (emulated != EMULATE_DONE)
1668 vcpu->arch.paddr_accessed += vcpu->run->mmio.len;
1669 vcpu->arch.mmio_vmx_copy_nums--;
1670 vcpu->arch.mmio_vmx_offset++;
1676 static int kvmppc_emulate_mmio_vmx_loadstore(struct kvm_vcpu *vcpu)
1678 struct kvm_run *run = vcpu->run;
1679 enum emulation_result emulated = EMULATE_FAIL;
1682 vcpu->arch.paddr_accessed += run->mmio.len;
1684 if (!vcpu->mmio_is_write) {
1685 emulated = kvmppc_handle_vmx_load(vcpu,
1686 vcpu->arch.io_gpr, run->mmio.len, 1);
1688 emulated = kvmppc_handle_vmx_store(vcpu,
1689 vcpu->arch.io_gpr, run->mmio.len, 1);
1693 case EMULATE_DO_MMIO:
1694 run->exit_reason = KVM_EXIT_MMIO;
1698 pr_info("KVM: MMIO emulation failed (VMX repeat)\n");
1699 run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
1700 run->internal.suberror = KVM_INTERNAL_ERROR_EMULATION;
1709 #endif /* CONFIG_ALTIVEC */
1711 int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg)
1714 union kvmppc_one_reg val;
1717 size = one_reg_size(reg->id);
1718 if (size > sizeof(val))
1721 r = kvmppc_get_one_reg(vcpu, reg->id, &val);
1725 #ifdef CONFIG_ALTIVEC
1726 case KVM_REG_PPC_VR0 ... KVM_REG_PPC_VR31:
1727 if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
1731 val.vval = vcpu->arch.vr.vr[reg->id - KVM_REG_PPC_VR0];
1733 case KVM_REG_PPC_VSCR:
1734 if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
1738 val = get_reg_val(reg->id, vcpu->arch.vr.vscr.u[3]);
1740 case KVM_REG_PPC_VRSAVE:
1741 val = get_reg_val(reg->id, vcpu->arch.vrsave);
1743 #endif /* CONFIG_ALTIVEC */
1753 if (copy_to_user((char __user *)(unsigned long)reg->addr, &val, size))
1759 int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg)
1762 union kvmppc_one_reg val;
1765 size = one_reg_size(reg->id);
1766 if (size > sizeof(val))
1769 if (copy_from_user(&val, (char __user *)(unsigned long)reg->addr, size))
1772 r = kvmppc_set_one_reg(vcpu, reg->id, &val);
1776 #ifdef CONFIG_ALTIVEC
1777 case KVM_REG_PPC_VR0 ... KVM_REG_PPC_VR31:
1778 if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
1782 vcpu->arch.vr.vr[reg->id - KVM_REG_PPC_VR0] = val.vval;
1784 case KVM_REG_PPC_VSCR:
1785 if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
1789 vcpu->arch.vr.vscr.u[3] = set_reg_val(reg->id, val);
1791 case KVM_REG_PPC_VRSAVE:
1792 if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
1796 vcpu->arch.vrsave = set_reg_val(reg->id, val);
1798 #endif /* CONFIG_ALTIVEC */
1808 int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu)
1810 struct kvm_run *run = vcpu->run;
1815 if (vcpu->mmio_needed) {
1816 vcpu->mmio_needed = 0;
1817 if (!vcpu->mmio_is_write)
1818 kvmppc_complete_mmio_load(vcpu);
1820 if (vcpu->arch.mmio_vsx_copy_nums > 0) {
1821 vcpu->arch.mmio_vsx_copy_nums--;
1822 vcpu->arch.mmio_vsx_offset++;
1825 if (vcpu->arch.mmio_vsx_copy_nums > 0) {
1826 r = kvmppc_emulate_mmio_vsx_loadstore(vcpu);
1827 if (r == RESUME_HOST) {
1828 vcpu->mmio_needed = 1;
1833 #ifdef CONFIG_ALTIVEC
1834 if (vcpu->arch.mmio_vmx_copy_nums > 0) {
1835 vcpu->arch.mmio_vmx_copy_nums--;
1836 vcpu->arch.mmio_vmx_offset++;
1839 if (vcpu->arch.mmio_vmx_copy_nums > 0) {
1840 r = kvmppc_emulate_mmio_vmx_loadstore(vcpu);
1841 if (r == RESUME_HOST) {
1842 vcpu->mmio_needed = 1;
1847 } else if (vcpu->arch.osi_needed) {
1848 u64 *gprs = run->osi.gprs;
1851 for (i = 0; i < 32; i++)
1852 kvmppc_set_gpr(vcpu, i, gprs[i]);
1853 vcpu->arch.osi_needed = 0;
1854 } else if (vcpu->arch.hcall_needed) {
1857 kvmppc_set_gpr(vcpu, 3, run->papr_hcall.ret);
1858 for (i = 0; i < 9; ++i)
1859 kvmppc_set_gpr(vcpu, 4 + i, run->papr_hcall.args[i]);
1860 vcpu->arch.hcall_needed = 0;
1862 } else if (vcpu->arch.epr_needed) {
1863 kvmppc_set_epr(vcpu, run->epr.epr);
1864 vcpu->arch.epr_needed = 0;
1868 kvm_sigset_activate(vcpu);
1870 if (run->immediate_exit)
1873 r = kvmppc_vcpu_run(vcpu);
1875 kvm_sigset_deactivate(vcpu);
1877 #ifdef CONFIG_ALTIVEC
1882 * We're already returning to userspace, don't pass the
1883 * RESUME_HOST flags along.
1892 int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq)
1894 if (irq->irq == KVM_INTERRUPT_UNSET) {
1895 kvmppc_core_dequeue_external(vcpu);
1899 kvmppc_core_queue_external(vcpu, irq);
1901 kvm_vcpu_kick(vcpu);
1906 static int kvm_vcpu_ioctl_enable_cap(struct kvm_vcpu *vcpu,
1907 struct kvm_enable_cap *cap)
1915 case KVM_CAP_PPC_OSI:
1917 vcpu->arch.osi_enabled = true;
1919 case KVM_CAP_PPC_PAPR:
1921 vcpu->arch.papr_enabled = true;
1923 case KVM_CAP_PPC_EPR:
1926 vcpu->arch.epr_flags |= KVMPPC_EPR_USER;
1928 vcpu->arch.epr_flags &= ~KVMPPC_EPR_USER;
1931 case KVM_CAP_PPC_BOOKE_WATCHDOG:
1933 vcpu->arch.watchdog_enabled = true;
1936 #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC)
1937 case KVM_CAP_SW_TLB: {
1938 struct kvm_config_tlb cfg;
1939 void __user *user_ptr = (void __user *)(uintptr_t)cap->args[0];
1942 if (copy_from_user(&cfg, user_ptr, sizeof(cfg)))
1945 r = kvm_vcpu_ioctl_config_tlb(vcpu, &cfg);
1949 #ifdef CONFIG_KVM_MPIC
1950 case KVM_CAP_IRQ_MPIC: {
1952 struct kvm_device *dev;
1955 f = fdget(cap->args[0]);
1960 dev = kvm_device_from_filp(f.file);
1962 r = kvmppc_mpic_connect_vcpu(dev, vcpu, cap->args[1]);
1968 #ifdef CONFIG_KVM_XICS
1969 case KVM_CAP_IRQ_XICS: {
1971 struct kvm_device *dev;
1974 f = fdget(cap->args[0]);
1979 dev = kvm_device_from_filp(f.file);
1982 r = kvmppc_xive_connect_vcpu(dev, vcpu, cap->args[1]);
1984 r = kvmppc_xics_connect_vcpu(dev, vcpu, cap->args[1]);
1990 #endif /* CONFIG_KVM_XICS */
1991 #ifdef CONFIG_KVM_XIVE
1992 case KVM_CAP_PPC_IRQ_XIVE: {
1994 struct kvm_device *dev;
1997 f = fdget(cap->args[0]);
2002 if (!xive_enabled())
2006 dev = kvm_device_from_filp(f.file);
2008 r = kvmppc_xive_native_connect_vcpu(dev, vcpu,
2014 #endif /* CONFIG_KVM_XIVE */
2015 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
2016 case KVM_CAP_PPC_FWNMI:
2018 if (!is_kvmppc_hv_enabled(vcpu->kvm))
2021 vcpu->kvm->arch.fwnmi_enabled = true;
2023 #endif /* CONFIG_KVM_BOOK3S_HV_POSSIBLE */
2030 r = kvmppc_sanity_check(vcpu);
2035 bool kvm_arch_intc_initialized(struct kvm *kvm)
2037 #ifdef CONFIG_KVM_MPIC
2041 #ifdef CONFIG_KVM_XICS
2042 if (kvm->arch.xics || kvm->arch.xive)
2048 int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu,
2049 struct kvm_mp_state *mp_state)
2054 int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,
2055 struct kvm_mp_state *mp_state)
2060 long kvm_arch_vcpu_async_ioctl(struct file *filp,
2061 unsigned int ioctl, unsigned long arg)
2063 struct kvm_vcpu *vcpu = filp->private_data;
2064 void __user *argp = (void __user *)arg;
2066 if (ioctl == KVM_INTERRUPT) {
2067 struct kvm_interrupt irq;
2068 if (copy_from_user(&irq, argp, sizeof(irq)))
2070 return kvm_vcpu_ioctl_interrupt(vcpu, &irq);
2072 return -ENOIOCTLCMD;
2075 long kvm_arch_vcpu_ioctl(struct file *filp,
2076 unsigned int ioctl, unsigned long arg)
2078 struct kvm_vcpu *vcpu = filp->private_data;
2079 void __user *argp = (void __user *)arg;
2083 case KVM_ENABLE_CAP:
2085 struct kvm_enable_cap cap;
2087 if (copy_from_user(&cap, argp, sizeof(cap)))
2090 r = kvm_vcpu_ioctl_enable_cap(vcpu, &cap);
2095 case KVM_SET_ONE_REG:
2096 case KVM_GET_ONE_REG:
2098 struct kvm_one_reg reg;
2100 if (copy_from_user(®, argp, sizeof(reg)))
2102 if (ioctl == KVM_SET_ONE_REG)
2103 r = kvm_vcpu_ioctl_set_one_reg(vcpu, ®);
2105 r = kvm_vcpu_ioctl_get_one_reg(vcpu, ®);
2109 #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC)
2110 case KVM_DIRTY_TLB: {
2111 struct kvm_dirty_tlb dirty;
2113 if (copy_from_user(&dirty, argp, sizeof(dirty)))
2116 r = kvm_vcpu_ioctl_dirty_tlb(vcpu, &dirty);
2129 vm_fault_t kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf)
2131 return VM_FAULT_SIGBUS;
2134 static int kvm_vm_ioctl_get_pvinfo(struct kvm_ppc_pvinfo *pvinfo)
2136 u32 inst_nop = 0x60000000;
2137 #ifdef CONFIG_KVM_BOOKE_HV
2138 u32 inst_sc1 = 0x44000022;
2139 pvinfo->hcall[0] = cpu_to_be32(inst_sc1);
2140 pvinfo->hcall[1] = cpu_to_be32(inst_nop);
2141 pvinfo->hcall[2] = cpu_to_be32(inst_nop);
2142 pvinfo->hcall[3] = cpu_to_be32(inst_nop);
2144 u32 inst_lis = 0x3c000000;
2145 u32 inst_ori = 0x60000000;
2146 u32 inst_sc = 0x44000002;
2147 u32 inst_imm_mask = 0xffff;
2150 * The hypercall to get into KVM from within guest context is as
2153 * lis r0, r0, KVM_SC_MAGIC_R0@h
2154 * ori r0, KVM_SC_MAGIC_R0@l
2158 pvinfo->hcall[0] = cpu_to_be32(inst_lis | ((KVM_SC_MAGIC_R0 >> 16) & inst_imm_mask));
2159 pvinfo->hcall[1] = cpu_to_be32(inst_ori | (KVM_SC_MAGIC_R0 & inst_imm_mask));
2160 pvinfo->hcall[2] = cpu_to_be32(inst_sc);
2161 pvinfo->hcall[3] = cpu_to_be32(inst_nop);
2164 pvinfo->flags = KVM_PPC_PVINFO_FLAGS_EV_IDLE;
2169 int kvm_vm_ioctl_irq_line(struct kvm *kvm, struct kvm_irq_level *irq_event,
2172 if (!irqchip_in_kernel(kvm))
2175 irq_event->status = kvm_set_irq(kvm, KVM_USERSPACE_IRQ_SOURCE_ID,
2176 irq_event->irq, irq_event->level,
2182 int kvm_vm_ioctl_enable_cap(struct kvm *kvm,
2183 struct kvm_enable_cap *cap)
2191 #ifdef CONFIG_KVM_BOOK3S_64_HANDLER
2192 case KVM_CAP_PPC_ENABLE_HCALL: {
2193 unsigned long hcall = cap->args[0];
2196 if (hcall > MAX_HCALL_OPCODE || (hcall & 3) ||
2199 if (!kvmppc_book3s_hcall_implemented(kvm, hcall))
2202 set_bit(hcall / 4, kvm->arch.enabled_hcalls);
2204 clear_bit(hcall / 4, kvm->arch.enabled_hcalls);
2208 case KVM_CAP_PPC_SMT: {
2209 unsigned long mode = cap->args[0];
2210 unsigned long flags = cap->args[1];
2213 if (kvm->arch.kvm_ops->set_smt_mode)
2214 r = kvm->arch.kvm_ops->set_smt_mode(kvm, mode, flags);
2218 case KVM_CAP_PPC_NESTED_HV:
2220 if (!is_kvmppc_hv_enabled(kvm) ||
2221 !kvm->arch.kvm_ops->enable_nested)
2223 r = kvm->arch.kvm_ops->enable_nested(kvm);
2226 #if defined(CONFIG_KVM_BOOK3S_HV_POSSIBLE)
2227 case KVM_CAP_PPC_SECURE_GUEST:
2229 if (!is_kvmppc_hv_enabled(kvm) || !kvm->arch.kvm_ops->enable_svm)
2231 r = kvm->arch.kvm_ops->enable_svm(kvm);
2233 case KVM_CAP_PPC_DAWR1:
2235 if (!is_kvmppc_hv_enabled(kvm) || !kvm->arch.kvm_ops->enable_dawr1)
2237 r = kvm->arch.kvm_ops->enable_dawr1(kvm);
2248 #ifdef CONFIG_PPC_BOOK3S_64
2250 * These functions check whether the underlying hardware is safe
2251 * against attacks based on observing the effects of speculatively
2252 * executed instructions, and whether it supplies instructions for
2253 * use in workarounds. The information comes from firmware, either
2254 * via the device tree on powernv platforms or from an hcall on
2255 * pseries platforms.
2257 #ifdef CONFIG_PPC_PSERIES
2258 static int pseries_get_cpu_char(struct kvm_ppc_cpu_char *cp)
2260 struct h_cpu_char_result c;
2263 if (!machine_is(pseries))
2266 rc = plpar_get_cpu_characteristics(&c);
2267 if (rc == H_SUCCESS) {
2268 cp->character = c.character;
2269 cp->behaviour = c.behaviour;
2270 cp->character_mask = KVM_PPC_CPU_CHAR_SPEC_BAR_ORI31 |
2271 KVM_PPC_CPU_CHAR_BCCTRL_SERIALISED |
2272 KVM_PPC_CPU_CHAR_L1D_FLUSH_ORI30 |
2273 KVM_PPC_CPU_CHAR_L1D_FLUSH_TRIG2 |
2274 KVM_PPC_CPU_CHAR_L1D_THREAD_PRIV |
2275 KVM_PPC_CPU_CHAR_BR_HINT_HONOURED |
2276 KVM_PPC_CPU_CHAR_MTTRIG_THR_RECONF |
2277 KVM_PPC_CPU_CHAR_COUNT_CACHE_DIS |
2278 KVM_PPC_CPU_CHAR_BCCTR_FLUSH_ASSIST;
2279 cp->behaviour_mask = KVM_PPC_CPU_BEHAV_FAVOUR_SECURITY |
2280 KVM_PPC_CPU_BEHAV_L1D_FLUSH_PR |
2281 KVM_PPC_CPU_BEHAV_BNDS_CHK_SPEC_BAR |
2282 KVM_PPC_CPU_BEHAV_FLUSH_COUNT_CACHE;
2287 static int pseries_get_cpu_char(struct kvm_ppc_cpu_char *cp)
2293 static inline bool have_fw_feat(struct device_node *fw_features,
2294 const char *state, const char *name)
2296 struct device_node *np;
2299 np = of_get_child_by_name(fw_features, name);
2301 r = of_property_read_bool(np, state);
2307 static int kvmppc_get_cpu_char(struct kvm_ppc_cpu_char *cp)
2309 struct device_node *np, *fw_features;
2312 memset(cp, 0, sizeof(*cp));
2313 r = pseries_get_cpu_char(cp);
2317 np = of_find_node_by_name(NULL, "ibm,opal");
2319 fw_features = of_get_child_by_name(np, "fw-features");
2323 if (have_fw_feat(fw_features, "enabled",
2324 "inst-spec-barrier-ori31,31,0"))
2325 cp->character |= KVM_PPC_CPU_CHAR_SPEC_BAR_ORI31;
2326 if (have_fw_feat(fw_features, "enabled",
2327 "fw-bcctrl-serialized"))
2328 cp->character |= KVM_PPC_CPU_CHAR_BCCTRL_SERIALISED;
2329 if (have_fw_feat(fw_features, "enabled",
2330 "inst-l1d-flush-ori30,30,0"))
2331 cp->character |= KVM_PPC_CPU_CHAR_L1D_FLUSH_ORI30;
2332 if (have_fw_feat(fw_features, "enabled",
2333 "inst-l1d-flush-trig2"))
2334 cp->character |= KVM_PPC_CPU_CHAR_L1D_FLUSH_TRIG2;
2335 if (have_fw_feat(fw_features, "enabled",
2336 "fw-l1d-thread-split"))
2337 cp->character |= KVM_PPC_CPU_CHAR_L1D_THREAD_PRIV;
2338 if (have_fw_feat(fw_features, "enabled",
2339 "fw-count-cache-disabled"))
2340 cp->character |= KVM_PPC_CPU_CHAR_COUNT_CACHE_DIS;
2341 if (have_fw_feat(fw_features, "enabled",
2342 "fw-count-cache-flush-bcctr2,0,0"))
2343 cp->character |= KVM_PPC_CPU_CHAR_BCCTR_FLUSH_ASSIST;
2344 cp->character_mask = KVM_PPC_CPU_CHAR_SPEC_BAR_ORI31 |
2345 KVM_PPC_CPU_CHAR_BCCTRL_SERIALISED |
2346 KVM_PPC_CPU_CHAR_L1D_FLUSH_ORI30 |
2347 KVM_PPC_CPU_CHAR_L1D_FLUSH_TRIG2 |
2348 KVM_PPC_CPU_CHAR_L1D_THREAD_PRIV |
2349 KVM_PPC_CPU_CHAR_COUNT_CACHE_DIS |
2350 KVM_PPC_CPU_CHAR_BCCTR_FLUSH_ASSIST;
2352 if (have_fw_feat(fw_features, "enabled",
2353 "speculation-policy-favor-security"))
2354 cp->behaviour |= KVM_PPC_CPU_BEHAV_FAVOUR_SECURITY;
2355 if (!have_fw_feat(fw_features, "disabled",
2356 "needs-l1d-flush-msr-pr-0-to-1"))
2357 cp->behaviour |= KVM_PPC_CPU_BEHAV_L1D_FLUSH_PR;
2358 if (!have_fw_feat(fw_features, "disabled",
2359 "needs-spec-barrier-for-bound-checks"))
2360 cp->behaviour |= KVM_PPC_CPU_BEHAV_BNDS_CHK_SPEC_BAR;
2361 if (have_fw_feat(fw_features, "enabled",
2362 "needs-count-cache-flush-on-context-switch"))
2363 cp->behaviour |= KVM_PPC_CPU_BEHAV_FLUSH_COUNT_CACHE;
2364 cp->behaviour_mask = KVM_PPC_CPU_BEHAV_FAVOUR_SECURITY |
2365 KVM_PPC_CPU_BEHAV_L1D_FLUSH_PR |
2366 KVM_PPC_CPU_BEHAV_BNDS_CHK_SPEC_BAR |
2367 KVM_PPC_CPU_BEHAV_FLUSH_COUNT_CACHE;
2369 of_node_put(fw_features);
2376 long kvm_arch_vm_ioctl(struct file *filp,
2377 unsigned int ioctl, unsigned long arg)
2379 struct kvm *kvm __maybe_unused = filp->private_data;
2380 void __user *argp = (void __user *)arg;
2384 case KVM_PPC_GET_PVINFO: {
2385 struct kvm_ppc_pvinfo pvinfo;
2386 memset(&pvinfo, 0, sizeof(pvinfo));
2387 r = kvm_vm_ioctl_get_pvinfo(&pvinfo);
2388 if (copy_to_user(argp, &pvinfo, sizeof(pvinfo))) {
2395 #ifdef CONFIG_SPAPR_TCE_IOMMU
2396 case KVM_CREATE_SPAPR_TCE_64: {
2397 struct kvm_create_spapr_tce_64 create_tce_64;
2400 if (copy_from_user(&create_tce_64, argp, sizeof(create_tce_64)))
2402 if (create_tce_64.flags) {
2406 r = kvm_vm_ioctl_create_spapr_tce(kvm, &create_tce_64);
2409 case KVM_CREATE_SPAPR_TCE: {
2410 struct kvm_create_spapr_tce create_tce;
2411 struct kvm_create_spapr_tce_64 create_tce_64;
2414 if (copy_from_user(&create_tce, argp, sizeof(create_tce)))
2417 create_tce_64.liobn = create_tce.liobn;
2418 create_tce_64.page_shift = IOMMU_PAGE_SHIFT_4K;
2419 create_tce_64.offset = 0;
2420 create_tce_64.size = create_tce.window_size >>
2421 IOMMU_PAGE_SHIFT_4K;
2422 create_tce_64.flags = 0;
2423 r = kvm_vm_ioctl_create_spapr_tce(kvm, &create_tce_64);
2427 #ifdef CONFIG_PPC_BOOK3S_64
2428 case KVM_PPC_GET_SMMU_INFO: {
2429 struct kvm_ppc_smmu_info info;
2430 struct kvm *kvm = filp->private_data;
2432 memset(&info, 0, sizeof(info));
2433 r = kvm->arch.kvm_ops->get_smmu_info(kvm, &info);
2434 if (r >= 0 && copy_to_user(argp, &info, sizeof(info)))
2438 case KVM_PPC_RTAS_DEFINE_TOKEN: {
2439 struct kvm *kvm = filp->private_data;
2441 r = kvm_vm_ioctl_rtas_define_token(kvm, argp);
2444 case KVM_PPC_CONFIGURE_V3_MMU: {
2445 struct kvm *kvm = filp->private_data;
2446 struct kvm_ppc_mmuv3_cfg cfg;
2449 if (!kvm->arch.kvm_ops->configure_mmu)
2452 if (copy_from_user(&cfg, argp, sizeof(cfg)))
2454 r = kvm->arch.kvm_ops->configure_mmu(kvm, &cfg);
2457 case KVM_PPC_GET_RMMU_INFO: {
2458 struct kvm *kvm = filp->private_data;
2459 struct kvm_ppc_rmmu_info info;
2462 if (!kvm->arch.kvm_ops->get_rmmu_info)
2464 r = kvm->arch.kvm_ops->get_rmmu_info(kvm, &info);
2465 if (r >= 0 && copy_to_user(argp, &info, sizeof(info)))
2469 case KVM_PPC_GET_CPU_CHAR: {
2470 struct kvm_ppc_cpu_char cpuchar;
2472 r = kvmppc_get_cpu_char(&cpuchar);
2473 if (r >= 0 && copy_to_user(argp, &cpuchar, sizeof(cpuchar)))
2477 case KVM_PPC_SVM_OFF: {
2478 struct kvm *kvm = filp->private_data;
2481 if (!kvm->arch.kvm_ops->svm_off)
2484 r = kvm->arch.kvm_ops->svm_off(kvm);
2488 struct kvm *kvm = filp->private_data;
2489 r = kvm->arch.kvm_ops->arch_vm_ioctl(filp, ioctl, arg);
2491 #else /* CONFIG_PPC_BOOK3S_64 */
2500 static DEFINE_IDA(lpid_inuse);
2501 static unsigned long nr_lpids;
2503 long kvmppc_alloc_lpid(void)
2507 /* The host LPID must always be 0 (allocation starts at 1) */
2508 lpid = ida_alloc_range(&lpid_inuse, 1, nr_lpids - 1, GFP_KERNEL);
2510 if (lpid == -ENOMEM)
2511 pr_err("%s: Out of memory\n", __func__);
2513 pr_err("%s: No LPIDs free\n", __func__);
2519 EXPORT_SYMBOL_GPL(kvmppc_alloc_lpid);
2521 void kvmppc_free_lpid(long lpid)
2523 ida_free(&lpid_inuse, lpid);
2525 EXPORT_SYMBOL_GPL(kvmppc_free_lpid);
2527 /* nr_lpids_param includes the host LPID */
2528 void kvmppc_init_lpid(unsigned long nr_lpids_param)
2530 nr_lpids = nr_lpids_param;
2532 EXPORT_SYMBOL_GPL(kvmppc_init_lpid);
2534 int kvm_arch_init(void *opaque)
2539 EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_ppc_instr);
2541 void kvm_arch_create_vcpu_debugfs(struct kvm_vcpu *vcpu, struct dentry *debugfs_dentry)
2543 if (vcpu->kvm->arch.kvm_ops->create_vcpu_debugfs)
2544 vcpu->kvm->arch.kvm_ops->create_vcpu_debugfs(vcpu, debugfs_dentry);
2547 int kvm_arch_create_vm_debugfs(struct kvm *kvm)
2549 if (kvm->arch.kvm_ops->create_vm_debugfs)
2550 kvm->arch.kvm_ops->create_vm_debugfs(kvm);