1 // SPDX-License-Identifier: GPL-2.0-only
4 * Copyright IBM Corp. 2007
6 * Authors: Hollis Blanchard <hollisb@us.ibm.com>
7 * Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
10 #include <linux/errno.h>
11 #include <linux/err.h>
12 #include <linux/kvm_host.h>
13 #include <linux/vmalloc.h>
14 #include <linux/hrtimer.h>
15 #include <linux/sched/signal.h>
17 #include <linux/slab.h>
18 #include <linux/file.h>
19 #include <linux/module.h>
20 #include <linux/irqbypass.h>
21 #include <linux/kvm_irqfd.h>
22 #include <asm/cputable.h>
23 #include <linux/uaccess.h>
24 #include <asm/kvm_ppc.h>
25 #include <asm/cputhreads.h>
26 #include <asm/irqflags.h>
27 #include <asm/iommu.h>
28 #include <asm/switch_to.h>
30 #ifdef CONFIG_PPC_PSERIES
31 #include <asm/hvcall.h>
32 #include <asm/plpar_wrappers.h>
34 #include <asm/ultravisor.h>
38 #include "../mm/mmu_decl.h"
40 #define CREATE_TRACE_POINTS
43 struct kvmppc_ops *kvmppc_hv_ops;
44 EXPORT_SYMBOL_GPL(kvmppc_hv_ops);
45 struct kvmppc_ops *kvmppc_pr_ops;
46 EXPORT_SYMBOL_GPL(kvmppc_pr_ops);
49 int kvm_arch_vcpu_runnable(struct kvm_vcpu *v)
51 return !!(v->arch.pending_exceptions) || kvm_request_pending(v);
54 bool kvm_arch_dy_runnable(struct kvm_vcpu *vcpu)
56 return kvm_arch_vcpu_runnable(vcpu);
59 bool kvm_arch_vcpu_in_kernel(struct kvm_vcpu *vcpu)
64 int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu)
70 * Common checks before entering the guest world. Call with interrupts
75 * == 1 if we're ready to go into guest state
76 * <= 0 if we need to go back to the host with return value
78 int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu)
82 WARN_ON(irqs_disabled());
93 if (signal_pending(current)) {
94 kvmppc_account_exit(vcpu, SIGNAL_EXITS);
95 vcpu->run->exit_reason = KVM_EXIT_INTR;
100 vcpu->mode = IN_GUEST_MODE;
103 * Reading vcpu->requests must happen after setting vcpu->mode,
104 * so we don't miss a request because the requester sees
105 * OUTSIDE_GUEST_MODE and assumes we'll be checking requests
106 * before next entering the guest (and thus doesn't IPI).
107 * This also orders the write to mode from any reads
108 * to the page tables done while the VCPU is running.
109 * Please see the comment in kvm_flush_remote_tlbs.
113 if (kvm_request_pending(vcpu)) {
114 /* Make sure we process requests preemptable */
116 trace_kvm_check_requests(vcpu);
117 r = kvmppc_core_check_requests(vcpu);
124 if (kvmppc_core_prepare_to_enter(vcpu)) {
125 /* interrupts got enabled in between, so we
126 are back at square 1 */
130 guest_enter_irqoff();
138 EXPORT_SYMBOL_GPL(kvmppc_prepare_to_enter);
140 #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE)
141 static void kvmppc_swab_shared(struct kvm_vcpu *vcpu)
143 struct kvm_vcpu_arch_shared *shared = vcpu->arch.shared;
146 shared->sprg0 = swab64(shared->sprg0);
147 shared->sprg1 = swab64(shared->sprg1);
148 shared->sprg2 = swab64(shared->sprg2);
149 shared->sprg3 = swab64(shared->sprg3);
150 shared->srr0 = swab64(shared->srr0);
151 shared->srr1 = swab64(shared->srr1);
152 shared->dar = swab64(shared->dar);
153 shared->msr = swab64(shared->msr);
154 shared->dsisr = swab32(shared->dsisr);
155 shared->int_pending = swab32(shared->int_pending);
156 for (i = 0; i < ARRAY_SIZE(shared->sr); i++)
157 shared->sr[i] = swab32(shared->sr[i]);
161 int kvmppc_kvm_pv(struct kvm_vcpu *vcpu)
163 int nr = kvmppc_get_gpr(vcpu, 11);
165 unsigned long __maybe_unused param1 = kvmppc_get_gpr(vcpu, 3);
166 unsigned long __maybe_unused param2 = kvmppc_get_gpr(vcpu, 4);
167 unsigned long __maybe_unused param3 = kvmppc_get_gpr(vcpu, 5);
168 unsigned long __maybe_unused param4 = kvmppc_get_gpr(vcpu, 6);
169 unsigned long r2 = 0;
171 if (!(kvmppc_get_msr(vcpu) & MSR_SF)) {
173 param1 &= 0xffffffff;
174 param2 &= 0xffffffff;
175 param3 &= 0xffffffff;
176 param4 &= 0xffffffff;
180 case KVM_HCALL_TOKEN(KVM_HC_PPC_MAP_MAGIC_PAGE):
182 #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE)
183 /* Book3S can be little endian, find it out here */
184 int shared_big_endian = true;
185 if (vcpu->arch.intr_msr & MSR_LE)
186 shared_big_endian = false;
187 if (shared_big_endian != vcpu->arch.shared_big_endian)
188 kvmppc_swab_shared(vcpu);
189 vcpu->arch.shared_big_endian = shared_big_endian;
192 if (!(param2 & MAGIC_PAGE_FLAG_NOT_MAPPED_NX)) {
194 * Older versions of the Linux magic page code had
195 * a bug where they would map their trampoline code
196 * NX. If that's the case, remove !PR NX capability.
198 vcpu->arch.disable_kernel_nx = true;
199 kvm_make_request(KVM_REQ_TLB_FLUSH, vcpu);
202 vcpu->arch.magic_page_pa = param1 & ~0xfffULL;
203 vcpu->arch.magic_page_ea = param2 & ~0xfffULL;
205 #ifdef CONFIG_PPC_64K_PAGES
207 * Make sure our 4k magic page is in the same window of a 64k
208 * page within the guest and within the host's page.
210 if ((vcpu->arch.magic_page_pa & 0xf000) !=
211 ((ulong)vcpu->arch.shared & 0xf000)) {
212 void *old_shared = vcpu->arch.shared;
213 ulong shared = (ulong)vcpu->arch.shared;
217 shared |= vcpu->arch.magic_page_pa & 0xf000;
218 new_shared = (void*)shared;
219 memcpy(new_shared, old_shared, 0x1000);
220 vcpu->arch.shared = new_shared;
224 r2 = KVM_MAGIC_FEAT_SR | KVM_MAGIC_FEAT_MAS0_TO_SPRG7;
229 case KVM_HCALL_TOKEN(KVM_HC_FEATURES):
231 #if defined(CONFIG_PPC_BOOK3S) || defined(CONFIG_KVM_E500V2)
232 r2 |= (1 << KVM_FEATURE_MAGIC_PAGE);
235 /* Second return value is in r4 */
237 case EV_HCALL_TOKEN(EV_IDLE):
239 kvm_vcpu_block(vcpu);
240 kvm_clear_request(KVM_REQ_UNHALT, vcpu);
243 r = EV_UNIMPLEMENTED;
247 kvmppc_set_gpr(vcpu, 4, r2);
251 EXPORT_SYMBOL_GPL(kvmppc_kvm_pv);
253 int kvmppc_sanity_check(struct kvm_vcpu *vcpu)
257 /* We have to know what CPU to virtualize */
261 /* PAPR only works with book3s_64 */
262 if ((vcpu->arch.cpu_type != KVM_CPU_3S_64) && vcpu->arch.papr_enabled)
265 /* HV KVM can only do PAPR mode for now */
266 if (!vcpu->arch.papr_enabled && is_kvmppc_hv_enabled(vcpu->kvm))
269 #ifdef CONFIG_KVM_BOOKE_HV
270 if (!cpu_has_feature(CPU_FTR_EMB_HV))
278 return r ? 0 : -EINVAL;
280 EXPORT_SYMBOL_GPL(kvmppc_sanity_check);
282 int kvmppc_emulate_mmio(struct kvm_vcpu *vcpu)
284 enum emulation_result er;
287 er = kvmppc_emulate_loadstore(vcpu);
290 /* Future optimization: only reload non-volatiles if they were
291 * actually modified. */
297 case EMULATE_DO_MMIO:
298 vcpu->run->exit_reason = KVM_EXIT_MMIO;
299 /* We must reload nonvolatiles because "update" load/store
300 * instructions modify register state. */
301 /* Future optimization: only reload non-volatiles if they were
302 * actually modified. */
309 kvmppc_get_last_inst(vcpu, INST_GENERIC, &last_inst);
310 /* XXX Deliver Program interrupt to guest. */
311 pr_emerg("%s: emulation failed (%08x)\n", __func__, last_inst);
322 EXPORT_SYMBOL_GPL(kvmppc_emulate_mmio);
324 int kvmppc_st(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr,
327 ulong mp_pa = vcpu->arch.magic_page_pa & KVM_PAM & PAGE_MASK;
328 struct kvmppc_pte pte;
333 if (vcpu->kvm->arch.kvm_ops && vcpu->kvm->arch.kvm_ops->store_to_eaddr)
334 r = vcpu->kvm->arch.kvm_ops->store_to_eaddr(vcpu, eaddr, ptr,
337 if ((!r) || (r == -EAGAIN))
340 r = kvmppc_xlate(vcpu, *eaddr, data ? XLATE_DATA : XLATE_INST,
350 /* Magic page override */
351 if (kvmppc_supports_magic_page(vcpu) && mp_pa &&
352 ((pte.raddr & KVM_PAM & PAGE_MASK) == mp_pa) &&
353 !(kvmppc_get_msr(vcpu) & MSR_PR)) {
354 void *magic = vcpu->arch.shared;
355 magic += pte.eaddr & 0xfff;
356 memcpy(magic, ptr, size);
360 if (kvm_write_guest(vcpu->kvm, pte.raddr, ptr, size))
361 return EMULATE_DO_MMIO;
365 EXPORT_SYMBOL_GPL(kvmppc_st);
367 int kvmppc_ld(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr,
370 ulong mp_pa = vcpu->arch.magic_page_pa & KVM_PAM & PAGE_MASK;
371 struct kvmppc_pte pte;
376 if (vcpu->kvm->arch.kvm_ops && vcpu->kvm->arch.kvm_ops->load_from_eaddr)
377 rc = vcpu->kvm->arch.kvm_ops->load_from_eaddr(vcpu, eaddr, ptr,
380 if ((!rc) || (rc == -EAGAIN))
383 rc = kvmppc_xlate(vcpu, *eaddr, data ? XLATE_DATA : XLATE_INST,
393 if (!data && !pte.may_execute)
396 /* Magic page override */
397 if (kvmppc_supports_magic_page(vcpu) && mp_pa &&
398 ((pte.raddr & KVM_PAM & PAGE_MASK) == mp_pa) &&
399 !(kvmppc_get_msr(vcpu) & MSR_PR)) {
400 void *magic = vcpu->arch.shared;
401 magic += pte.eaddr & 0xfff;
402 memcpy(ptr, magic, size);
406 if (kvm_read_guest(vcpu->kvm, pte.raddr, ptr, size))
407 return EMULATE_DO_MMIO;
411 EXPORT_SYMBOL_GPL(kvmppc_ld);
413 int kvm_arch_hardware_enable(void)
418 int kvm_arch_hardware_setup(void *opaque)
423 int kvm_arch_check_processor_compat(void *opaque)
425 return kvmppc_core_check_processor_compat();
428 int kvm_arch_init_vm(struct kvm *kvm, unsigned long type)
430 struct kvmppc_ops *kvm_ops = NULL;
432 * if we have both HV and PR enabled, default is HV
436 kvm_ops = kvmppc_hv_ops;
438 kvm_ops = kvmppc_pr_ops;
441 } else if (type == KVM_VM_PPC_HV) {
444 kvm_ops = kvmppc_hv_ops;
445 } else if (type == KVM_VM_PPC_PR) {
448 kvm_ops = kvmppc_pr_ops;
452 if (kvm_ops->owner && !try_module_get(kvm_ops->owner))
455 kvm->arch.kvm_ops = kvm_ops;
456 return kvmppc_core_init_vm(kvm);
461 void kvm_arch_destroy_vm(struct kvm *kvm)
464 struct kvm_vcpu *vcpu;
466 #ifdef CONFIG_KVM_XICS
468 * We call kick_all_cpus_sync() to ensure that all
469 * CPUs have executed any pending IPIs before we
470 * continue and free VCPUs structures below.
472 if (is_kvmppc_hv_enabled(kvm))
473 kick_all_cpus_sync();
476 kvm_for_each_vcpu(i, vcpu, kvm)
477 kvm_vcpu_destroy(vcpu);
479 mutex_lock(&kvm->lock);
480 for (i = 0; i < atomic_read(&kvm->online_vcpus); i++)
481 kvm->vcpus[i] = NULL;
483 atomic_set(&kvm->online_vcpus, 0);
485 kvmppc_core_destroy_vm(kvm);
487 mutex_unlock(&kvm->lock);
489 /* drop the module reference */
490 module_put(kvm->arch.kvm_ops->owner);
493 int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext)
496 /* Assume we're using HV mode when the HV module is loaded */
497 int hv_enabled = kvmppc_hv_ops ? 1 : 0;
501 * Hooray - we know which VM type we're running on. Depend on
502 * that rather than the guess above.
504 hv_enabled = is_kvmppc_hv_enabled(kvm);
509 case KVM_CAP_PPC_BOOKE_SREGS:
510 case KVM_CAP_PPC_BOOKE_WATCHDOG:
511 case KVM_CAP_PPC_EPR:
513 case KVM_CAP_PPC_SEGSTATE:
514 case KVM_CAP_PPC_HIOR:
515 case KVM_CAP_PPC_PAPR:
517 case KVM_CAP_PPC_UNSET_IRQ:
518 case KVM_CAP_PPC_IRQ_LEVEL:
519 case KVM_CAP_ENABLE_CAP:
520 case KVM_CAP_ONE_REG:
521 case KVM_CAP_IOEVENTFD:
522 case KVM_CAP_DEVICE_CTRL:
523 case KVM_CAP_IMMEDIATE_EXIT:
524 case KVM_CAP_SET_GUEST_DEBUG:
527 case KVM_CAP_PPC_GUEST_DEBUG_SSTEP:
528 case KVM_CAP_PPC_PAIRED_SINGLES:
529 case KVM_CAP_PPC_OSI:
530 case KVM_CAP_PPC_GET_PVINFO:
531 #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC)
534 /* We support this only for PR */
537 #ifdef CONFIG_KVM_MPIC
538 case KVM_CAP_IRQ_MPIC:
543 #ifdef CONFIG_PPC_BOOK3S_64
544 case KVM_CAP_SPAPR_TCE:
545 case KVM_CAP_SPAPR_TCE_64:
548 case KVM_CAP_SPAPR_TCE_VFIO:
549 r = !!cpu_has_feature(CPU_FTR_HVMODE);
551 case KVM_CAP_PPC_RTAS:
552 case KVM_CAP_PPC_FIXUP_HCALL:
553 case KVM_CAP_PPC_ENABLE_HCALL:
554 #ifdef CONFIG_KVM_XICS
555 case KVM_CAP_IRQ_XICS:
557 case KVM_CAP_PPC_GET_CPU_CHAR:
560 #ifdef CONFIG_KVM_XIVE
561 case KVM_CAP_PPC_IRQ_XIVE:
563 * We need XIVE to be enabled on the platform (implies
564 * a POWER9 processor) and the PowerNV platform, as
565 * nested is not yet supported.
567 r = xive_enabled() && !!cpu_has_feature(CPU_FTR_HVMODE) &&
568 kvmppc_xive_native_supported();
572 case KVM_CAP_PPC_ALLOC_HTAB:
575 #endif /* CONFIG_PPC_BOOK3S_64 */
576 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
577 case KVM_CAP_PPC_SMT:
580 if (kvm->arch.emul_smt_mode > 1)
581 r = kvm->arch.emul_smt_mode;
583 r = kvm->arch.smt_mode;
584 } else if (hv_enabled) {
585 if (cpu_has_feature(CPU_FTR_ARCH_300))
588 r = threads_per_subcore;
591 case KVM_CAP_PPC_SMT_POSSIBLE:
594 if (!cpu_has_feature(CPU_FTR_ARCH_300))
595 r = ((threads_per_subcore << 1) - 1);
597 /* P9 can emulate dbells, so allow any mode */
601 case KVM_CAP_PPC_RMA:
604 case KVM_CAP_PPC_HWRNG:
605 r = kvmppc_hwrng_present();
607 case KVM_CAP_PPC_MMU_RADIX:
608 r = !!(hv_enabled && radix_enabled());
610 case KVM_CAP_PPC_MMU_HASH_V3:
611 r = !!(hv_enabled && cpu_has_feature(CPU_FTR_ARCH_300) &&
612 cpu_has_feature(CPU_FTR_HVMODE));
614 case KVM_CAP_PPC_NESTED_HV:
615 r = !!(hv_enabled && kvmppc_hv_ops->enable_nested &&
616 !kvmppc_hv_ops->enable_nested(NULL));
619 case KVM_CAP_SYNC_MMU:
620 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
622 #elif defined(KVM_ARCH_WANT_MMU_NOTIFIER)
628 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
629 case KVM_CAP_PPC_HTAB_FD:
633 case KVM_CAP_NR_VCPUS:
635 * Recommending a number of CPUs is somewhat arbitrary; we
636 * return the number of present CPUs for -HV (since a host
637 * will have secondary threads "offline"), and for other KVM
638 * implementations just count online CPUs.
641 r = num_present_cpus();
643 r = num_online_cpus();
645 case KVM_CAP_MAX_VCPUS:
648 case KVM_CAP_MAX_VCPU_ID:
651 #ifdef CONFIG_PPC_BOOK3S_64
652 case KVM_CAP_PPC_GET_SMMU_INFO:
655 case KVM_CAP_SPAPR_MULTITCE:
658 case KVM_CAP_SPAPR_RESIZE_HPT:
662 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
663 case KVM_CAP_PPC_FWNMI:
667 #ifdef CONFIG_PPC_TRANSACTIONAL_MEM
668 case KVM_CAP_PPC_HTM:
669 r = !!(cur_cpu_spec->cpu_user_features2 & PPC_FEATURE2_HTM) ||
670 (hv_enabled && cpu_has_feature(CPU_FTR_P9_TM_HV_ASSIST));
673 #if defined(CONFIG_KVM_BOOK3S_HV_POSSIBLE)
674 case KVM_CAP_PPC_SECURE_GUEST:
675 r = hv_enabled && kvmppc_hv_ops->enable_svm &&
676 !kvmppc_hv_ops->enable_svm(NULL);
687 long kvm_arch_dev_ioctl(struct file *filp,
688 unsigned int ioctl, unsigned long arg)
693 void kvm_arch_free_memslot(struct kvm *kvm, struct kvm_memory_slot *slot)
695 kvmppc_core_free_memslot(kvm, slot);
698 int kvm_arch_prepare_memory_region(struct kvm *kvm,
699 struct kvm_memory_slot *memslot,
700 const struct kvm_userspace_memory_region *mem,
701 enum kvm_mr_change change)
703 return kvmppc_core_prepare_memory_region(kvm, memslot, mem, change);
706 void kvm_arch_commit_memory_region(struct kvm *kvm,
707 const struct kvm_userspace_memory_region *mem,
708 struct kvm_memory_slot *old,
709 const struct kvm_memory_slot *new,
710 enum kvm_mr_change change)
712 kvmppc_core_commit_memory_region(kvm, mem, old, new, change);
715 void kvm_arch_flush_shadow_memslot(struct kvm *kvm,
716 struct kvm_memory_slot *slot)
718 kvmppc_core_flush_memslot(kvm, slot);
721 int kvm_arch_vcpu_precreate(struct kvm *kvm, unsigned int id)
726 static enum hrtimer_restart kvmppc_decrementer_wakeup(struct hrtimer *timer)
728 struct kvm_vcpu *vcpu;
730 vcpu = container_of(timer, struct kvm_vcpu, arch.dec_timer);
731 kvmppc_decrementer_func(vcpu);
733 return HRTIMER_NORESTART;
736 int kvm_arch_vcpu_create(struct kvm_vcpu *vcpu)
740 hrtimer_init(&vcpu->arch.dec_timer, CLOCK_REALTIME, HRTIMER_MODE_ABS);
741 vcpu->arch.dec_timer.function = kvmppc_decrementer_wakeup;
742 vcpu->arch.dec_expires = get_tb();
744 #ifdef CONFIG_KVM_EXIT_TIMING
745 mutex_init(&vcpu->arch.exit_timing_lock);
747 err = kvmppc_subarch_vcpu_init(vcpu);
751 err = kvmppc_core_vcpu_create(vcpu);
753 goto out_vcpu_uninit;
755 vcpu->arch.waitp = &vcpu->wait;
756 kvmppc_create_vcpu_debugfs(vcpu, vcpu->vcpu_id);
760 kvmppc_subarch_vcpu_uninit(vcpu);
764 void kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu)
768 void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu)
770 /* Make sure we're not using the vcpu anymore */
771 hrtimer_cancel(&vcpu->arch.dec_timer);
773 kvmppc_remove_vcpu_debugfs(vcpu);
775 switch (vcpu->arch.irq_type) {
776 case KVMPPC_IRQ_MPIC:
777 kvmppc_mpic_disconnect_vcpu(vcpu->arch.mpic, vcpu);
779 case KVMPPC_IRQ_XICS:
781 kvmppc_xive_cleanup_vcpu(vcpu);
783 kvmppc_xics_free_icp(vcpu);
785 case KVMPPC_IRQ_XIVE:
786 kvmppc_xive_native_cleanup_vcpu(vcpu);
790 kvmppc_core_vcpu_free(vcpu);
792 kvmppc_subarch_vcpu_uninit(vcpu);
795 int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu)
797 return kvmppc_core_pending_dec(vcpu);
800 void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
804 * vrsave (formerly usprg0) isn't used by Linux, but may
805 * be used by the guest.
807 * On non-booke this is associated with Altivec and
808 * is handled by code in book3s.c.
810 mtspr(SPRN_VRSAVE, vcpu->arch.vrsave);
812 kvmppc_core_vcpu_load(vcpu, cpu);
815 void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu)
817 kvmppc_core_vcpu_put(vcpu);
819 vcpu->arch.vrsave = mfspr(SPRN_VRSAVE);
824 * irq_bypass_add_producer and irq_bypass_del_producer are only
825 * useful if the architecture supports PCI passthrough.
826 * irq_bypass_stop and irq_bypass_start are not needed and so
827 * kvm_ops are not defined for them.
829 bool kvm_arch_has_irq_bypass(void)
831 return ((kvmppc_hv_ops && kvmppc_hv_ops->irq_bypass_add_producer) ||
832 (kvmppc_pr_ops && kvmppc_pr_ops->irq_bypass_add_producer));
835 int kvm_arch_irq_bypass_add_producer(struct irq_bypass_consumer *cons,
836 struct irq_bypass_producer *prod)
838 struct kvm_kernel_irqfd *irqfd =
839 container_of(cons, struct kvm_kernel_irqfd, consumer);
840 struct kvm *kvm = irqfd->kvm;
842 if (kvm->arch.kvm_ops->irq_bypass_add_producer)
843 return kvm->arch.kvm_ops->irq_bypass_add_producer(cons, prod);
848 void kvm_arch_irq_bypass_del_producer(struct irq_bypass_consumer *cons,
849 struct irq_bypass_producer *prod)
851 struct kvm_kernel_irqfd *irqfd =
852 container_of(cons, struct kvm_kernel_irqfd, consumer);
853 struct kvm *kvm = irqfd->kvm;
855 if (kvm->arch.kvm_ops->irq_bypass_del_producer)
856 kvm->arch.kvm_ops->irq_bypass_del_producer(cons, prod);
860 static inline int kvmppc_get_vsr_dword_offset(int index)
864 if ((index != 0) && (index != 1))
876 static inline int kvmppc_get_vsr_word_offset(int index)
880 if ((index > 3) || (index < 0))
891 static inline void kvmppc_set_vsr_dword(struct kvm_vcpu *vcpu,
894 union kvmppc_one_reg val;
895 int offset = kvmppc_get_vsr_dword_offset(vcpu->arch.mmio_vsx_offset);
896 int index = vcpu->arch.io_gpr & KVM_MMIO_REG_MASK;
902 val.vval = VCPU_VSX_VR(vcpu, index - 32);
903 val.vsxval[offset] = gpr;
904 VCPU_VSX_VR(vcpu, index - 32) = val.vval;
906 VCPU_VSX_FPR(vcpu, index, offset) = gpr;
910 static inline void kvmppc_set_vsr_dword_dump(struct kvm_vcpu *vcpu,
913 union kvmppc_one_reg val;
914 int index = vcpu->arch.io_gpr & KVM_MMIO_REG_MASK;
917 val.vval = VCPU_VSX_VR(vcpu, index - 32);
920 VCPU_VSX_VR(vcpu, index - 32) = val.vval;
922 VCPU_VSX_FPR(vcpu, index, 0) = gpr;
923 VCPU_VSX_FPR(vcpu, index, 1) = gpr;
927 static inline void kvmppc_set_vsr_word_dump(struct kvm_vcpu *vcpu,
930 union kvmppc_one_reg val;
931 int index = vcpu->arch.io_gpr & KVM_MMIO_REG_MASK;
934 val.vsx32val[0] = gpr;
935 val.vsx32val[1] = gpr;
936 val.vsx32val[2] = gpr;
937 val.vsx32val[3] = gpr;
938 VCPU_VSX_VR(vcpu, index - 32) = val.vval;
940 val.vsx32val[0] = gpr;
941 val.vsx32val[1] = gpr;
942 VCPU_VSX_FPR(vcpu, index, 0) = val.vsxval[0];
943 VCPU_VSX_FPR(vcpu, index, 1) = val.vsxval[0];
947 static inline void kvmppc_set_vsr_word(struct kvm_vcpu *vcpu,
950 union kvmppc_one_reg val;
951 int offset = kvmppc_get_vsr_word_offset(vcpu->arch.mmio_vsx_offset);
952 int index = vcpu->arch.io_gpr & KVM_MMIO_REG_MASK;
953 int dword_offset, word_offset;
959 val.vval = VCPU_VSX_VR(vcpu, index - 32);
960 val.vsx32val[offset] = gpr32;
961 VCPU_VSX_VR(vcpu, index - 32) = val.vval;
963 dword_offset = offset / 2;
964 word_offset = offset % 2;
965 val.vsxval[0] = VCPU_VSX_FPR(vcpu, index, dword_offset);
966 val.vsx32val[word_offset] = gpr32;
967 VCPU_VSX_FPR(vcpu, index, dword_offset) = val.vsxval[0];
970 #endif /* CONFIG_VSX */
972 #ifdef CONFIG_ALTIVEC
973 static inline int kvmppc_get_vmx_offset_generic(struct kvm_vcpu *vcpu,
974 int index, int element_size)
977 int elts = sizeof(vector128)/element_size;
979 if ((index < 0) || (index >= elts))
982 if (kvmppc_need_byteswap(vcpu))
983 offset = elts - index - 1;
990 static inline int kvmppc_get_vmx_dword_offset(struct kvm_vcpu *vcpu,
993 return kvmppc_get_vmx_offset_generic(vcpu, index, 8);
996 static inline int kvmppc_get_vmx_word_offset(struct kvm_vcpu *vcpu,
999 return kvmppc_get_vmx_offset_generic(vcpu, index, 4);
1002 static inline int kvmppc_get_vmx_hword_offset(struct kvm_vcpu *vcpu,
1005 return kvmppc_get_vmx_offset_generic(vcpu, index, 2);
1008 static inline int kvmppc_get_vmx_byte_offset(struct kvm_vcpu *vcpu,
1011 return kvmppc_get_vmx_offset_generic(vcpu, index, 1);
1015 static inline void kvmppc_set_vmx_dword(struct kvm_vcpu *vcpu,
1018 union kvmppc_one_reg val;
1019 int offset = kvmppc_get_vmx_dword_offset(vcpu,
1020 vcpu->arch.mmio_vmx_offset);
1021 int index = vcpu->arch.io_gpr & KVM_MMIO_REG_MASK;
1026 val.vval = VCPU_VSX_VR(vcpu, index);
1027 val.vsxval[offset] = gpr;
1028 VCPU_VSX_VR(vcpu, index) = val.vval;
1031 static inline void kvmppc_set_vmx_word(struct kvm_vcpu *vcpu,
1034 union kvmppc_one_reg val;
1035 int offset = kvmppc_get_vmx_word_offset(vcpu,
1036 vcpu->arch.mmio_vmx_offset);
1037 int index = vcpu->arch.io_gpr & KVM_MMIO_REG_MASK;
1042 val.vval = VCPU_VSX_VR(vcpu, index);
1043 val.vsx32val[offset] = gpr32;
1044 VCPU_VSX_VR(vcpu, index) = val.vval;
1047 static inline void kvmppc_set_vmx_hword(struct kvm_vcpu *vcpu,
1050 union kvmppc_one_reg val;
1051 int offset = kvmppc_get_vmx_hword_offset(vcpu,
1052 vcpu->arch.mmio_vmx_offset);
1053 int index = vcpu->arch.io_gpr & KVM_MMIO_REG_MASK;
1058 val.vval = VCPU_VSX_VR(vcpu, index);
1059 val.vsx16val[offset] = gpr16;
1060 VCPU_VSX_VR(vcpu, index) = val.vval;
1063 static inline void kvmppc_set_vmx_byte(struct kvm_vcpu *vcpu,
1066 union kvmppc_one_reg val;
1067 int offset = kvmppc_get_vmx_byte_offset(vcpu,
1068 vcpu->arch.mmio_vmx_offset);
1069 int index = vcpu->arch.io_gpr & KVM_MMIO_REG_MASK;
1074 val.vval = VCPU_VSX_VR(vcpu, index);
1075 val.vsx8val[offset] = gpr8;
1076 VCPU_VSX_VR(vcpu, index) = val.vval;
1078 #endif /* CONFIG_ALTIVEC */
1080 #ifdef CONFIG_PPC_FPU
1081 static inline u64 sp_to_dp(u32 fprs)
1087 asm ("lfs%U1%X1 0,%1; stfd%U0%X0 0,%0" : "=m" (fprd) : "m" (fprs)
1093 static inline u32 dp_to_sp(u64 fprd)
1099 asm ("lfd%U1%X1 0,%1; stfs%U0%X0 0,%0" : "=m" (fprs) : "m" (fprd)
1106 #define sp_to_dp(x) (x)
1107 #define dp_to_sp(x) (x)
1108 #endif /* CONFIG_PPC_FPU */
1110 static void kvmppc_complete_mmio_load(struct kvm_vcpu *vcpu)
1112 struct kvm_run *run = vcpu->run;
1115 if (run->mmio.len > sizeof(gpr)) {
1116 printk(KERN_ERR "bad MMIO length: %d\n", run->mmio.len);
1120 if (!vcpu->arch.mmio_host_swabbed) {
1121 switch (run->mmio.len) {
1122 case 8: gpr = *(u64 *)run->mmio.data; break;
1123 case 4: gpr = *(u32 *)run->mmio.data; break;
1124 case 2: gpr = *(u16 *)run->mmio.data; break;
1125 case 1: gpr = *(u8 *)run->mmio.data; break;
1128 switch (run->mmio.len) {
1129 case 8: gpr = swab64(*(u64 *)run->mmio.data); break;
1130 case 4: gpr = swab32(*(u32 *)run->mmio.data); break;
1131 case 2: gpr = swab16(*(u16 *)run->mmio.data); break;
1132 case 1: gpr = *(u8 *)run->mmio.data; break;
1136 /* conversion between single and double precision */
1137 if ((vcpu->arch.mmio_sp64_extend) && (run->mmio.len == 4))
1138 gpr = sp_to_dp(gpr);
1140 if (vcpu->arch.mmio_sign_extend) {
1141 switch (run->mmio.len) {
1144 gpr = (s64)(s32)gpr;
1148 gpr = (s64)(s16)gpr;
1156 switch (vcpu->arch.io_gpr & KVM_MMIO_REG_EXT_MASK) {
1157 case KVM_MMIO_REG_GPR:
1158 kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, gpr);
1160 case KVM_MMIO_REG_FPR:
1161 if (vcpu->kvm->arch.kvm_ops->giveup_ext)
1162 vcpu->kvm->arch.kvm_ops->giveup_ext(vcpu, MSR_FP);
1164 VCPU_FPR(vcpu, vcpu->arch.io_gpr & KVM_MMIO_REG_MASK) = gpr;
1166 #ifdef CONFIG_PPC_BOOK3S
1167 case KVM_MMIO_REG_QPR:
1168 vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr;
1170 case KVM_MMIO_REG_FQPR:
1171 VCPU_FPR(vcpu, vcpu->arch.io_gpr & KVM_MMIO_REG_MASK) = gpr;
1172 vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr;
1176 case KVM_MMIO_REG_VSX:
1177 if (vcpu->kvm->arch.kvm_ops->giveup_ext)
1178 vcpu->kvm->arch.kvm_ops->giveup_ext(vcpu, MSR_VSX);
1180 if (vcpu->arch.mmio_copy_type == KVMPPC_VSX_COPY_DWORD)
1181 kvmppc_set_vsr_dword(vcpu, gpr);
1182 else if (vcpu->arch.mmio_copy_type == KVMPPC_VSX_COPY_WORD)
1183 kvmppc_set_vsr_word(vcpu, gpr);
1184 else if (vcpu->arch.mmio_copy_type ==
1185 KVMPPC_VSX_COPY_DWORD_LOAD_DUMP)
1186 kvmppc_set_vsr_dword_dump(vcpu, gpr);
1187 else if (vcpu->arch.mmio_copy_type ==
1188 KVMPPC_VSX_COPY_WORD_LOAD_DUMP)
1189 kvmppc_set_vsr_word_dump(vcpu, gpr);
1192 #ifdef CONFIG_ALTIVEC
1193 case KVM_MMIO_REG_VMX:
1194 if (vcpu->kvm->arch.kvm_ops->giveup_ext)
1195 vcpu->kvm->arch.kvm_ops->giveup_ext(vcpu, MSR_VEC);
1197 if (vcpu->arch.mmio_copy_type == KVMPPC_VMX_COPY_DWORD)
1198 kvmppc_set_vmx_dword(vcpu, gpr);
1199 else if (vcpu->arch.mmio_copy_type == KVMPPC_VMX_COPY_WORD)
1200 kvmppc_set_vmx_word(vcpu, gpr);
1201 else if (vcpu->arch.mmio_copy_type ==
1202 KVMPPC_VMX_COPY_HWORD)
1203 kvmppc_set_vmx_hword(vcpu, gpr);
1204 else if (vcpu->arch.mmio_copy_type ==
1205 KVMPPC_VMX_COPY_BYTE)
1206 kvmppc_set_vmx_byte(vcpu, gpr);
1209 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
1210 case KVM_MMIO_REG_NESTED_GPR:
1211 if (kvmppc_need_byteswap(vcpu))
1213 kvm_vcpu_write_guest(vcpu, vcpu->arch.nested_io_gpr, &gpr,
1222 static int __kvmppc_handle_load(struct kvm_vcpu *vcpu,
1223 unsigned int rt, unsigned int bytes,
1224 int is_default_endian, int sign_extend)
1226 struct kvm_run *run = vcpu->run;
1230 /* Pity C doesn't have a logical XOR operator */
1231 if (kvmppc_need_byteswap(vcpu)) {
1232 host_swabbed = is_default_endian;
1234 host_swabbed = !is_default_endian;
1237 if (bytes > sizeof(run->mmio.data)) {
1238 printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__,
1242 run->mmio.phys_addr = vcpu->arch.paddr_accessed;
1243 run->mmio.len = bytes;
1244 run->mmio.is_write = 0;
1246 vcpu->arch.io_gpr = rt;
1247 vcpu->arch.mmio_host_swabbed = host_swabbed;
1248 vcpu->mmio_needed = 1;
1249 vcpu->mmio_is_write = 0;
1250 vcpu->arch.mmio_sign_extend = sign_extend;
1252 idx = srcu_read_lock(&vcpu->kvm->srcu);
1254 ret = kvm_io_bus_read(vcpu, KVM_MMIO_BUS, run->mmio.phys_addr,
1255 bytes, &run->mmio.data);
1257 srcu_read_unlock(&vcpu->kvm->srcu, idx);
1260 kvmppc_complete_mmio_load(vcpu);
1261 vcpu->mmio_needed = 0;
1262 return EMULATE_DONE;
1265 return EMULATE_DO_MMIO;
1268 int kvmppc_handle_load(struct kvm_vcpu *vcpu,
1269 unsigned int rt, unsigned int bytes,
1270 int is_default_endian)
1272 return __kvmppc_handle_load(vcpu, rt, bytes, is_default_endian, 0);
1274 EXPORT_SYMBOL_GPL(kvmppc_handle_load);
1276 /* Same as above, but sign extends */
1277 int kvmppc_handle_loads(struct kvm_vcpu *vcpu,
1278 unsigned int rt, unsigned int bytes,
1279 int is_default_endian)
1281 return __kvmppc_handle_load(vcpu, rt, bytes, is_default_endian, 1);
1285 int kvmppc_handle_vsx_load(struct kvm_vcpu *vcpu,
1286 unsigned int rt, unsigned int bytes,
1287 int is_default_endian, int mmio_sign_extend)
1289 enum emulation_result emulated = EMULATE_DONE;
1291 /* Currently, mmio_vsx_copy_nums only allowed to be 4 or less */
1292 if (vcpu->arch.mmio_vsx_copy_nums > 4)
1293 return EMULATE_FAIL;
1295 while (vcpu->arch.mmio_vsx_copy_nums) {
1296 emulated = __kvmppc_handle_load(vcpu, rt, bytes,
1297 is_default_endian, mmio_sign_extend);
1299 if (emulated != EMULATE_DONE)
1302 vcpu->arch.paddr_accessed += vcpu->run->mmio.len;
1304 vcpu->arch.mmio_vsx_copy_nums--;
1305 vcpu->arch.mmio_vsx_offset++;
1309 #endif /* CONFIG_VSX */
1311 int kvmppc_handle_store(struct kvm_vcpu *vcpu,
1312 u64 val, unsigned int bytes, int is_default_endian)
1314 struct kvm_run *run = vcpu->run;
1315 void *data = run->mmio.data;
1319 /* Pity C doesn't have a logical XOR operator */
1320 if (kvmppc_need_byteswap(vcpu)) {
1321 host_swabbed = is_default_endian;
1323 host_swabbed = !is_default_endian;
1326 if (bytes > sizeof(run->mmio.data)) {
1327 printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__,
1331 run->mmio.phys_addr = vcpu->arch.paddr_accessed;
1332 run->mmio.len = bytes;
1333 run->mmio.is_write = 1;
1334 vcpu->mmio_needed = 1;
1335 vcpu->mmio_is_write = 1;
1337 if ((vcpu->arch.mmio_sp64_extend) && (bytes == 4))
1338 val = dp_to_sp(val);
1340 /* Store the value at the lowest bytes in 'data'. */
1341 if (!host_swabbed) {
1343 case 8: *(u64 *)data = val; break;
1344 case 4: *(u32 *)data = val; break;
1345 case 2: *(u16 *)data = val; break;
1346 case 1: *(u8 *)data = val; break;
1350 case 8: *(u64 *)data = swab64(val); break;
1351 case 4: *(u32 *)data = swab32(val); break;
1352 case 2: *(u16 *)data = swab16(val); break;
1353 case 1: *(u8 *)data = val; break;
1357 idx = srcu_read_lock(&vcpu->kvm->srcu);
1359 ret = kvm_io_bus_write(vcpu, KVM_MMIO_BUS, run->mmio.phys_addr,
1360 bytes, &run->mmio.data);
1362 srcu_read_unlock(&vcpu->kvm->srcu, idx);
1365 vcpu->mmio_needed = 0;
1366 return EMULATE_DONE;
1369 return EMULATE_DO_MMIO;
1371 EXPORT_SYMBOL_GPL(kvmppc_handle_store);
1374 static inline int kvmppc_get_vsr_data(struct kvm_vcpu *vcpu, int rs, u64 *val)
1376 u32 dword_offset, word_offset;
1377 union kvmppc_one_reg reg;
1379 int copy_type = vcpu->arch.mmio_copy_type;
1382 switch (copy_type) {
1383 case KVMPPC_VSX_COPY_DWORD:
1385 kvmppc_get_vsr_dword_offset(vcpu->arch.mmio_vsx_offset);
1387 if (vsx_offset == -1) {
1393 *val = VCPU_VSX_FPR(vcpu, rs, vsx_offset);
1395 reg.vval = VCPU_VSX_VR(vcpu, rs - 32);
1396 *val = reg.vsxval[vsx_offset];
1400 case KVMPPC_VSX_COPY_WORD:
1402 kvmppc_get_vsr_word_offset(vcpu->arch.mmio_vsx_offset);
1404 if (vsx_offset == -1) {
1410 dword_offset = vsx_offset / 2;
1411 word_offset = vsx_offset % 2;
1412 reg.vsxval[0] = VCPU_VSX_FPR(vcpu, rs, dword_offset);
1413 *val = reg.vsx32val[word_offset];
1415 reg.vval = VCPU_VSX_VR(vcpu, rs - 32);
1416 *val = reg.vsx32val[vsx_offset];
1428 int kvmppc_handle_vsx_store(struct kvm_vcpu *vcpu,
1429 int rs, unsigned int bytes, int is_default_endian)
1432 enum emulation_result emulated = EMULATE_DONE;
1434 vcpu->arch.io_gpr = rs;
1436 /* Currently, mmio_vsx_copy_nums only allowed to be 4 or less */
1437 if (vcpu->arch.mmio_vsx_copy_nums > 4)
1438 return EMULATE_FAIL;
1440 while (vcpu->arch.mmio_vsx_copy_nums) {
1441 if (kvmppc_get_vsr_data(vcpu, rs, &val) == -1)
1442 return EMULATE_FAIL;
1444 emulated = kvmppc_handle_store(vcpu,
1445 val, bytes, is_default_endian);
1447 if (emulated != EMULATE_DONE)
1450 vcpu->arch.paddr_accessed += vcpu->run->mmio.len;
1452 vcpu->arch.mmio_vsx_copy_nums--;
1453 vcpu->arch.mmio_vsx_offset++;
1459 static int kvmppc_emulate_mmio_vsx_loadstore(struct kvm_vcpu *vcpu)
1461 struct kvm_run *run = vcpu->run;
1462 enum emulation_result emulated = EMULATE_FAIL;
1465 vcpu->arch.paddr_accessed += run->mmio.len;
1467 if (!vcpu->mmio_is_write) {
1468 emulated = kvmppc_handle_vsx_load(vcpu, vcpu->arch.io_gpr,
1469 run->mmio.len, 1, vcpu->arch.mmio_sign_extend);
1471 emulated = kvmppc_handle_vsx_store(vcpu,
1472 vcpu->arch.io_gpr, run->mmio.len, 1);
1476 case EMULATE_DO_MMIO:
1477 run->exit_reason = KVM_EXIT_MMIO;
1481 pr_info("KVM: MMIO emulation failed (VSX repeat)\n");
1482 run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
1483 run->internal.suberror = KVM_INTERNAL_ERROR_EMULATION;
1492 #endif /* CONFIG_VSX */
1494 #ifdef CONFIG_ALTIVEC
1495 int kvmppc_handle_vmx_load(struct kvm_vcpu *vcpu,
1496 unsigned int rt, unsigned int bytes, int is_default_endian)
1498 enum emulation_result emulated = EMULATE_DONE;
1500 if (vcpu->arch.mmio_vsx_copy_nums > 2)
1501 return EMULATE_FAIL;
1503 while (vcpu->arch.mmio_vmx_copy_nums) {
1504 emulated = __kvmppc_handle_load(vcpu, rt, bytes,
1505 is_default_endian, 0);
1507 if (emulated != EMULATE_DONE)
1510 vcpu->arch.paddr_accessed += vcpu->run->mmio.len;
1511 vcpu->arch.mmio_vmx_copy_nums--;
1512 vcpu->arch.mmio_vmx_offset++;
1518 int kvmppc_get_vmx_dword(struct kvm_vcpu *vcpu, int index, u64 *val)
1520 union kvmppc_one_reg reg;
1525 kvmppc_get_vmx_dword_offset(vcpu, vcpu->arch.mmio_vmx_offset);
1527 if (vmx_offset == -1)
1530 reg.vval = VCPU_VSX_VR(vcpu, index);
1531 *val = reg.vsxval[vmx_offset];
1536 int kvmppc_get_vmx_word(struct kvm_vcpu *vcpu, int index, u64 *val)
1538 union kvmppc_one_reg reg;
1543 kvmppc_get_vmx_word_offset(vcpu, vcpu->arch.mmio_vmx_offset);
1545 if (vmx_offset == -1)
1548 reg.vval = VCPU_VSX_VR(vcpu, index);
1549 *val = reg.vsx32val[vmx_offset];
1554 int kvmppc_get_vmx_hword(struct kvm_vcpu *vcpu, int index, u64 *val)
1556 union kvmppc_one_reg reg;
1561 kvmppc_get_vmx_hword_offset(vcpu, vcpu->arch.mmio_vmx_offset);
1563 if (vmx_offset == -1)
1566 reg.vval = VCPU_VSX_VR(vcpu, index);
1567 *val = reg.vsx16val[vmx_offset];
1572 int kvmppc_get_vmx_byte(struct kvm_vcpu *vcpu, int index, u64 *val)
1574 union kvmppc_one_reg reg;
1579 kvmppc_get_vmx_byte_offset(vcpu, vcpu->arch.mmio_vmx_offset);
1581 if (vmx_offset == -1)
1584 reg.vval = VCPU_VSX_VR(vcpu, index);
1585 *val = reg.vsx8val[vmx_offset];
1590 int kvmppc_handle_vmx_store(struct kvm_vcpu *vcpu,
1591 unsigned int rs, unsigned int bytes, int is_default_endian)
1594 unsigned int index = rs & KVM_MMIO_REG_MASK;
1595 enum emulation_result emulated = EMULATE_DONE;
1597 if (vcpu->arch.mmio_vsx_copy_nums > 2)
1598 return EMULATE_FAIL;
1600 vcpu->arch.io_gpr = rs;
1602 while (vcpu->arch.mmio_vmx_copy_nums) {
1603 switch (vcpu->arch.mmio_copy_type) {
1604 case KVMPPC_VMX_COPY_DWORD:
1605 if (kvmppc_get_vmx_dword(vcpu, index, &val) == -1)
1606 return EMULATE_FAIL;
1609 case KVMPPC_VMX_COPY_WORD:
1610 if (kvmppc_get_vmx_word(vcpu, index, &val) == -1)
1611 return EMULATE_FAIL;
1613 case KVMPPC_VMX_COPY_HWORD:
1614 if (kvmppc_get_vmx_hword(vcpu, index, &val) == -1)
1615 return EMULATE_FAIL;
1617 case KVMPPC_VMX_COPY_BYTE:
1618 if (kvmppc_get_vmx_byte(vcpu, index, &val) == -1)
1619 return EMULATE_FAIL;
1622 return EMULATE_FAIL;
1625 emulated = kvmppc_handle_store(vcpu, val, bytes,
1627 if (emulated != EMULATE_DONE)
1630 vcpu->arch.paddr_accessed += vcpu->run->mmio.len;
1631 vcpu->arch.mmio_vmx_copy_nums--;
1632 vcpu->arch.mmio_vmx_offset++;
1638 static int kvmppc_emulate_mmio_vmx_loadstore(struct kvm_vcpu *vcpu)
1640 struct kvm_run *run = vcpu->run;
1641 enum emulation_result emulated = EMULATE_FAIL;
1644 vcpu->arch.paddr_accessed += run->mmio.len;
1646 if (!vcpu->mmio_is_write) {
1647 emulated = kvmppc_handle_vmx_load(vcpu,
1648 vcpu->arch.io_gpr, run->mmio.len, 1);
1650 emulated = kvmppc_handle_vmx_store(vcpu,
1651 vcpu->arch.io_gpr, run->mmio.len, 1);
1655 case EMULATE_DO_MMIO:
1656 run->exit_reason = KVM_EXIT_MMIO;
1660 pr_info("KVM: MMIO emulation failed (VMX repeat)\n");
1661 run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
1662 run->internal.suberror = KVM_INTERNAL_ERROR_EMULATION;
1671 #endif /* CONFIG_ALTIVEC */
1673 int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg)
1676 union kvmppc_one_reg val;
1679 size = one_reg_size(reg->id);
1680 if (size > sizeof(val))
1683 r = kvmppc_get_one_reg(vcpu, reg->id, &val);
1687 #ifdef CONFIG_ALTIVEC
1688 case KVM_REG_PPC_VR0 ... KVM_REG_PPC_VR31:
1689 if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
1693 val.vval = vcpu->arch.vr.vr[reg->id - KVM_REG_PPC_VR0];
1695 case KVM_REG_PPC_VSCR:
1696 if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
1700 val = get_reg_val(reg->id, vcpu->arch.vr.vscr.u[3]);
1702 case KVM_REG_PPC_VRSAVE:
1703 val = get_reg_val(reg->id, vcpu->arch.vrsave);
1705 #endif /* CONFIG_ALTIVEC */
1715 if (copy_to_user((char __user *)(unsigned long)reg->addr, &val, size))
1721 int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg)
1724 union kvmppc_one_reg val;
1727 size = one_reg_size(reg->id);
1728 if (size > sizeof(val))
1731 if (copy_from_user(&val, (char __user *)(unsigned long)reg->addr, size))
1734 r = kvmppc_set_one_reg(vcpu, reg->id, &val);
1738 #ifdef CONFIG_ALTIVEC
1739 case KVM_REG_PPC_VR0 ... KVM_REG_PPC_VR31:
1740 if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
1744 vcpu->arch.vr.vr[reg->id - KVM_REG_PPC_VR0] = val.vval;
1746 case KVM_REG_PPC_VSCR:
1747 if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
1751 vcpu->arch.vr.vscr.u[3] = set_reg_val(reg->id, val);
1753 case KVM_REG_PPC_VRSAVE:
1754 if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
1758 vcpu->arch.vrsave = set_reg_val(reg->id, val);
1760 #endif /* CONFIG_ALTIVEC */
1770 int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu)
1772 struct kvm_run *run = vcpu->run;
1777 if (vcpu->mmio_needed) {
1778 vcpu->mmio_needed = 0;
1779 if (!vcpu->mmio_is_write)
1780 kvmppc_complete_mmio_load(vcpu);
1782 if (vcpu->arch.mmio_vsx_copy_nums > 0) {
1783 vcpu->arch.mmio_vsx_copy_nums--;
1784 vcpu->arch.mmio_vsx_offset++;
1787 if (vcpu->arch.mmio_vsx_copy_nums > 0) {
1788 r = kvmppc_emulate_mmio_vsx_loadstore(vcpu);
1789 if (r == RESUME_HOST) {
1790 vcpu->mmio_needed = 1;
1795 #ifdef CONFIG_ALTIVEC
1796 if (vcpu->arch.mmio_vmx_copy_nums > 0) {
1797 vcpu->arch.mmio_vmx_copy_nums--;
1798 vcpu->arch.mmio_vmx_offset++;
1801 if (vcpu->arch.mmio_vmx_copy_nums > 0) {
1802 r = kvmppc_emulate_mmio_vmx_loadstore(vcpu);
1803 if (r == RESUME_HOST) {
1804 vcpu->mmio_needed = 1;
1809 } else if (vcpu->arch.osi_needed) {
1810 u64 *gprs = run->osi.gprs;
1813 for (i = 0; i < 32; i++)
1814 kvmppc_set_gpr(vcpu, i, gprs[i]);
1815 vcpu->arch.osi_needed = 0;
1816 } else if (vcpu->arch.hcall_needed) {
1819 kvmppc_set_gpr(vcpu, 3, run->papr_hcall.ret);
1820 for (i = 0; i < 9; ++i)
1821 kvmppc_set_gpr(vcpu, 4 + i, run->papr_hcall.args[i]);
1822 vcpu->arch.hcall_needed = 0;
1824 } else if (vcpu->arch.epr_needed) {
1825 kvmppc_set_epr(vcpu, run->epr.epr);
1826 vcpu->arch.epr_needed = 0;
1830 kvm_sigset_activate(vcpu);
1832 if (run->immediate_exit)
1835 r = kvmppc_vcpu_run(vcpu);
1837 kvm_sigset_deactivate(vcpu);
1839 #ifdef CONFIG_ALTIVEC
1846 int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq)
1848 if (irq->irq == KVM_INTERRUPT_UNSET) {
1849 kvmppc_core_dequeue_external(vcpu);
1853 kvmppc_core_queue_external(vcpu, irq);
1855 kvm_vcpu_kick(vcpu);
1860 static int kvm_vcpu_ioctl_enable_cap(struct kvm_vcpu *vcpu,
1861 struct kvm_enable_cap *cap)
1869 case KVM_CAP_PPC_OSI:
1871 vcpu->arch.osi_enabled = true;
1873 case KVM_CAP_PPC_PAPR:
1875 vcpu->arch.papr_enabled = true;
1877 case KVM_CAP_PPC_EPR:
1880 vcpu->arch.epr_flags |= KVMPPC_EPR_USER;
1882 vcpu->arch.epr_flags &= ~KVMPPC_EPR_USER;
1885 case KVM_CAP_PPC_BOOKE_WATCHDOG:
1887 vcpu->arch.watchdog_enabled = true;
1890 #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC)
1891 case KVM_CAP_SW_TLB: {
1892 struct kvm_config_tlb cfg;
1893 void __user *user_ptr = (void __user *)(uintptr_t)cap->args[0];
1896 if (copy_from_user(&cfg, user_ptr, sizeof(cfg)))
1899 r = kvm_vcpu_ioctl_config_tlb(vcpu, &cfg);
1903 #ifdef CONFIG_KVM_MPIC
1904 case KVM_CAP_IRQ_MPIC: {
1906 struct kvm_device *dev;
1909 f = fdget(cap->args[0]);
1914 dev = kvm_device_from_filp(f.file);
1916 r = kvmppc_mpic_connect_vcpu(dev, vcpu, cap->args[1]);
1922 #ifdef CONFIG_KVM_XICS
1923 case KVM_CAP_IRQ_XICS: {
1925 struct kvm_device *dev;
1928 f = fdget(cap->args[0]);
1933 dev = kvm_device_from_filp(f.file);
1936 r = kvmppc_xive_connect_vcpu(dev, vcpu, cap->args[1]);
1938 r = kvmppc_xics_connect_vcpu(dev, vcpu, cap->args[1]);
1944 #endif /* CONFIG_KVM_XICS */
1945 #ifdef CONFIG_KVM_XIVE
1946 case KVM_CAP_PPC_IRQ_XIVE: {
1948 struct kvm_device *dev;
1951 f = fdget(cap->args[0]);
1956 if (!xive_enabled())
1960 dev = kvm_device_from_filp(f.file);
1962 r = kvmppc_xive_native_connect_vcpu(dev, vcpu,
1968 #endif /* CONFIG_KVM_XIVE */
1969 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
1970 case KVM_CAP_PPC_FWNMI:
1972 if (!is_kvmppc_hv_enabled(vcpu->kvm))
1975 vcpu->kvm->arch.fwnmi_enabled = true;
1977 #endif /* CONFIG_KVM_BOOK3S_HV_POSSIBLE */
1984 r = kvmppc_sanity_check(vcpu);
1989 bool kvm_arch_intc_initialized(struct kvm *kvm)
1991 #ifdef CONFIG_KVM_MPIC
1995 #ifdef CONFIG_KVM_XICS
1996 if (kvm->arch.xics || kvm->arch.xive)
2002 int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu,
2003 struct kvm_mp_state *mp_state)
2008 int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,
2009 struct kvm_mp_state *mp_state)
2014 long kvm_arch_vcpu_async_ioctl(struct file *filp,
2015 unsigned int ioctl, unsigned long arg)
2017 struct kvm_vcpu *vcpu = filp->private_data;
2018 void __user *argp = (void __user *)arg;
2020 if (ioctl == KVM_INTERRUPT) {
2021 struct kvm_interrupt irq;
2022 if (copy_from_user(&irq, argp, sizeof(irq)))
2024 return kvm_vcpu_ioctl_interrupt(vcpu, &irq);
2026 return -ENOIOCTLCMD;
2029 long kvm_arch_vcpu_ioctl(struct file *filp,
2030 unsigned int ioctl, unsigned long arg)
2032 struct kvm_vcpu *vcpu = filp->private_data;
2033 void __user *argp = (void __user *)arg;
2037 case KVM_ENABLE_CAP:
2039 struct kvm_enable_cap cap;
2042 if (copy_from_user(&cap, argp, sizeof(cap)))
2044 r = kvm_vcpu_ioctl_enable_cap(vcpu, &cap);
2049 case KVM_SET_ONE_REG:
2050 case KVM_GET_ONE_REG:
2052 struct kvm_one_reg reg;
2054 if (copy_from_user(®, argp, sizeof(reg)))
2056 if (ioctl == KVM_SET_ONE_REG)
2057 r = kvm_vcpu_ioctl_set_one_reg(vcpu, ®);
2059 r = kvm_vcpu_ioctl_get_one_reg(vcpu, ®);
2063 #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC)
2064 case KVM_DIRTY_TLB: {
2065 struct kvm_dirty_tlb dirty;
2068 if (copy_from_user(&dirty, argp, sizeof(dirty)))
2070 r = kvm_vcpu_ioctl_dirty_tlb(vcpu, &dirty);
2083 vm_fault_t kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf)
2085 return VM_FAULT_SIGBUS;
2088 static int kvm_vm_ioctl_get_pvinfo(struct kvm_ppc_pvinfo *pvinfo)
2090 u32 inst_nop = 0x60000000;
2091 #ifdef CONFIG_KVM_BOOKE_HV
2092 u32 inst_sc1 = 0x44000022;
2093 pvinfo->hcall[0] = cpu_to_be32(inst_sc1);
2094 pvinfo->hcall[1] = cpu_to_be32(inst_nop);
2095 pvinfo->hcall[2] = cpu_to_be32(inst_nop);
2096 pvinfo->hcall[3] = cpu_to_be32(inst_nop);
2098 u32 inst_lis = 0x3c000000;
2099 u32 inst_ori = 0x60000000;
2100 u32 inst_sc = 0x44000002;
2101 u32 inst_imm_mask = 0xffff;
2104 * The hypercall to get into KVM from within guest context is as
2107 * lis r0, r0, KVM_SC_MAGIC_R0@h
2108 * ori r0, KVM_SC_MAGIC_R0@l
2112 pvinfo->hcall[0] = cpu_to_be32(inst_lis | ((KVM_SC_MAGIC_R0 >> 16) & inst_imm_mask));
2113 pvinfo->hcall[1] = cpu_to_be32(inst_ori | (KVM_SC_MAGIC_R0 & inst_imm_mask));
2114 pvinfo->hcall[2] = cpu_to_be32(inst_sc);
2115 pvinfo->hcall[3] = cpu_to_be32(inst_nop);
2118 pvinfo->flags = KVM_PPC_PVINFO_FLAGS_EV_IDLE;
2123 int kvm_vm_ioctl_irq_line(struct kvm *kvm, struct kvm_irq_level *irq_event,
2126 if (!irqchip_in_kernel(kvm))
2129 irq_event->status = kvm_set_irq(kvm, KVM_USERSPACE_IRQ_SOURCE_ID,
2130 irq_event->irq, irq_event->level,
2136 int kvm_vm_ioctl_enable_cap(struct kvm *kvm,
2137 struct kvm_enable_cap *cap)
2145 #ifdef CONFIG_KVM_BOOK3S_64_HANDLER
2146 case KVM_CAP_PPC_ENABLE_HCALL: {
2147 unsigned long hcall = cap->args[0];
2150 if (hcall > MAX_HCALL_OPCODE || (hcall & 3) ||
2153 if (!kvmppc_book3s_hcall_implemented(kvm, hcall))
2156 set_bit(hcall / 4, kvm->arch.enabled_hcalls);
2158 clear_bit(hcall / 4, kvm->arch.enabled_hcalls);
2162 case KVM_CAP_PPC_SMT: {
2163 unsigned long mode = cap->args[0];
2164 unsigned long flags = cap->args[1];
2167 if (kvm->arch.kvm_ops->set_smt_mode)
2168 r = kvm->arch.kvm_ops->set_smt_mode(kvm, mode, flags);
2172 case KVM_CAP_PPC_NESTED_HV:
2174 if (!is_kvmppc_hv_enabled(kvm) ||
2175 !kvm->arch.kvm_ops->enable_nested)
2177 r = kvm->arch.kvm_ops->enable_nested(kvm);
2180 #if defined(CONFIG_KVM_BOOK3S_HV_POSSIBLE)
2181 case KVM_CAP_PPC_SECURE_GUEST:
2183 if (!is_kvmppc_hv_enabled(kvm) || !kvm->arch.kvm_ops->enable_svm)
2185 r = kvm->arch.kvm_ops->enable_svm(kvm);
2196 #ifdef CONFIG_PPC_BOOK3S_64
2198 * These functions check whether the underlying hardware is safe
2199 * against attacks based on observing the effects of speculatively
2200 * executed instructions, and whether it supplies instructions for
2201 * use in workarounds. The information comes from firmware, either
2202 * via the device tree on powernv platforms or from an hcall on
2203 * pseries platforms.
2205 #ifdef CONFIG_PPC_PSERIES
2206 static int pseries_get_cpu_char(struct kvm_ppc_cpu_char *cp)
2208 struct h_cpu_char_result c;
2211 if (!machine_is(pseries))
2214 rc = plpar_get_cpu_characteristics(&c);
2215 if (rc == H_SUCCESS) {
2216 cp->character = c.character;
2217 cp->behaviour = c.behaviour;
2218 cp->character_mask = KVM_PPC_CPU_CHAR_SPEC_BAR_ORI31 |
2219 KVM_PPC_CPU_CHAR_BCCTRL_SERIALISED |
2220 KVM_PPC_CPU_CHAR_L1D_FLUSH_ORI30 |
2221 KVM_PPC_CPU_CHAR_L1D_FLUSH_TRIG2 |
2222 KVM_PPC_CPU_CHAR_L1D_THREAD_PRIV |
2223 KVM_PPC_CPU_CHAR_BR_HINT_HONOURED |
2224 KVM_PPC_CPU_CHAR_MTTRIG_THR_RECONF |
2225 KVM_PPC_CPU_CHAR_COUNT_CACHE_DIS |
2226 KVM_PPC_CPU_CHAR_BCCTR_FLUSH_ASSIST;
2227 cp->behaviour_mask = KVM_PPC_CPU_BEHAV_FAVOUR_SECURITY |
2228 KVM_PPC_CPU_BEHAV_L1D_FLUSH_PR |
2229 KVM_PPC_CPU_BEHAV_BNDS_CHK_SPEC_BAR |
2230 KVM_PPC_CPU_BEHAV_FLUSH_COUNT_CACHE;
2235 static int pseries_get_cpu_char(struct kvm_ppc_cpu_char *cp)
2241 static inline bool have_fw_feat(struct device_node *fw_features,
2242 const char *state, const char *name)
2244 struct device_node *np;
2247 np = of_get_child_by_name(fw_features, name);
2249 r = of_property_read_bool(np, state);
2255 static int kvmppc_get_cpu_char(struct kvm_ppc_cpu_char *cp)
2257 struct device_node *np, *fw_features;
2260 memset(cp, 0, sizeof(*cp));
2261 r = pseries_get_cpu_char(cp);
2265 np = of_find_node_by_name(NULL, "ibm,opal");
2267 fw_features = of_get_child_by_name(np, "fw-features");
2271 if (have_fw_feat(fw_features, "enabled",
2272 "inst-spec-barrier-ori31,31,0"))
2273 cp->character |= KVM_PPC_CPU_CHAR_SPEC_BAR_ORI31;
2274 if (have_fw_feat(fw_features, "enabled",
2275 "fw-bcctrl-serialized"))
2276 cp->character |= KVM_PPC_CPU_CHAR_BCCTRL_SERIALISED;
2277 if (have_fw_feat(fw_features, "enabled",
2278 "inst-l1d-flush-ori30,30,0"))
2279 cp->character |= KVM_PPC_CPU_CHAR_L1D_FLUSH_ORI30;
2280 if (have_fw_feat(fw_features, "enabled",
2281 "inst-l1d-flush-trig2"))
2282 cp->character |= KVM_PPC_CPU_CHAR_L1D_FLUSH_TRIG2;
2283 if (have_fw_feat(fw_features, "enabled",
2284 "fw-l1d-thread-split"))
2285 cp->character |= KVM_PPC_CPU_CHAR_L1D_THREAD_PRIV;
2286 if (have_fw_feat(fw_features, "enabled",
2287 "fw-count-cache-disabled"))
2288 cp->character |= KVM_PPC_CPU_CHAR_COUNT_CACHE_DIS;
2289 if (have_fw_feat(fw_features, "enabled",
2290 "fw-count-cache-flush-bcctr2,0,0"))
2291 cp->character |= KVM_PPC_CPU_CHAR_BCCTR_FLUSH_ASSIST;
2292 cp->character_mask = KVM_PPC_CPU_CHAR_SPEC_BAR_ORI31 |
2293 KVM_PPC_CPU_CHAR_BCCTRL_SERIALISED |
2294 KVM_PPC_CPU_CHAR_L1D_FLUSH_ORI30 |
2295 KVM_PPC_CPU_CHAR_L1D_FLUSH_TRIG2 |
2296 KVM_PPC_CPU_CHAR_L1D_THREAD_PRIV |
2297 KVM_PPC_CPU_CHAR_COUNT_CACHE_DIS |
2298 KVM_PPC_CPU_CHAR_BCCTR_FLUSH_ASSIST;
2300 if (have_fw_feat(fw_features, "enabled",
2301 "speculation-policy-favor-security"))
2302 cp->behaviour |= KVM_PPC_CPU_BEHAV_FAVOUR_SECURITY;
2303 if (!have_fw_feat(fw_features, "disabled",
2304 "needs-l1d-flush-msr-pr-0-to-1"))
2305 cp->behaviour |= KVM_PPC_CPU_BEHAV_L1D_FLUSH_PR;
2306 if (!have_fw_feat(fw_features, "disabled",
2307 "needs-spec-barrier-for-bound-checks"))
2308 cp->behaviour |= KVM_PPC_CPU_BEHAV_BNDS_CHK_SPEC_BAR;
2309 if (have_fw_feat(fw_features, "enabled",
2310 "needs-count-cache-flush-on-context-switch"))
2311 cp->behaviour |= KVM_PPC_CPU_BEHAV_FLUSH_COUNT_CACHE;
2312 cp->behaviour_mask = KVM_PPC_CPU_BEHAV_FAVOUR_SECURITY |
2313 KVM_PPC_CPU_BEHAV_L1D_FLUSH_PR |
2314 KVM_PPC_CPU_BEHAV_BNDS_CHK_SPEC_BAR |
2315 KVM_PPC_CPU_BEHAV_FLUSH_COUNT_CACHE;
2317 of_node_put(fw_features);
2324 long kvm_arch_vm_ioctl(struct file *filp,
2325 unsigned int ioctl, unsigned long arg)
2327 struct kvm *kvm __maybe_unused = filp->private_data;
2328 void __user *argp = (void __user *)arg;
2332 case KVM_PPC_GET_PVINFO: {
2333 struct kvm_ppc_pvinfo pvinfo;
2334 memset(&pvinfo, 0, sizeof(pvinfo));
2335 r = kvm_vm_ioctl_get_pvinfo(&pvinfo);
2336 if (copy_to_user(argp, &pvinfo, sizeof(pvinfo))) {
2343 #ifdef CONFIG_SPAPR_TCE_IOMMU
2344 case KVM_CREATE_SPAPR_TCE_64: {
2345 struct kvm_create_spapr_tce_64 create_tce_64;
2348 if (copy_from_user(&create_tce_64, argp, sizeof(create_tce_64)))
2350 if (create_tce_64.flags) {
2354 r = kvm_vm_ioctl_create_spapr_tce(kvm, &create_tce_64);
2357 case KVM_CREATE_SPAPR_TCE: {
2358 struct kvm_create_spapr_tce create_tce;
2359 struct kvm_create_spapr_tce_64 create_tce_64;
2362 if (copy_from_user(&create_tce, argp, sizeof(create_tce)))
2365 create_tce_64.liobn = create_tce.liobn;
2366 create_tce_64.page_shift = IOMMU_PAGE_SHIFT_4K;
2367 create_tce_64.offset = 0;
2368 create_tce_64.size = create_tce.window_size >>
2369 IOMMU_PAGE_SHIFT_4K;
2370 create_tce_64.flags = 0;
2371 r = kvm_vm_ioctl_create_spapr_tce(kvm, &create_tce_64);
2375 #ifdef CONFIG_PPC_BOOK3S_64
2376 case KVM_PPC_GET_SMMU_INFO: {
2377 struct kvm_ppc_smmu_info info;
2378 struct kvm *kvm = filp->private_data;
2380 memset(&info, 0, sizeof(info));
2381 r = kvm->arch.kvm_ops->get_smmu_info(kvm, &info);
2382 if (r >= 0 && copy_to_user(argp, &info, sizeof(info)))
2386 case KVM_PPC_RTAS_DEFINE_TOKEN: {
2387 struct kvm *kvm = filp->private_data;
2389 r = kvm_vm_ioctl_rtas_define_token(kvm, argp);
2392 case KVM_PPC_CONFIGURE_V3_MMU: {
2393 struct kvm *kvm = filp->private_data;
2394 struct kvm_ppc_mmuv3_cfg cfg;
2397 if (!kvm->arch.kvm_ops->configure_mmu)
2400 if (copy_from_user(&cfg, argp, sizeof(cfg)))
2402 r = kvm->arch.kvm_ops->configure_mmu(kvm, &cfg);
2405 case KVM_PPC_GET_RMMU_INFO: {
2406 struct kvm *kvm = filp->private_data;
2407 struct kvm_ppc_rmmu_info info;
2410 if (!kvm->arch.kvm_ops->get_rmmu_info)
2412 r = kvm->arch.kvm_ops->get_rmmu_info(kvm, &info);
2413 if (r >= 0 && copy_to_user(argp, &info, sizeof(info)))
2417 case KVM_PPC_GET_CPU_CHAR: {
2418 struct kvm_ppc_cpu_char cpuchar;
2420 r = kvmppc_get_cpu_char(&cpuchar);
2421 if (r >= 0 && copy_to_user(argp, &cpuchar, sizeof(cpuchar)))
2425 case KVM_PPC_SVM_OFF: {
2426 struct kvm *kvm = filp->private_data;
2429 if (!kvm->arch.kvm_ops->svm_off)
2432 r = kvm->arch.kvm_ops->svm_off(kvm);
2436 struct kvm *kvm = filp->private_data;
2437 r = kvm->arch.kvm_ops->arch_vm_ioctl(filp, ioctl, arg);
2439 #else /* CONFIG_PPC_BOOK3S_64 */
2448 static unsigned long lpid_inuse[BITS_TO_LONGS(KVMPPC_NR_LPIDS)];
2449 static unsigned long nr_lpids;
2451 long kvmppc_alloc_lpid(void)
2456 lpid = find_first_zero_bit(lpid_inuse, KVMPPC_NR_LPIDS);
2457 if (lpid >= nr_lpids) {
2458 pr_err("%s: No LPIDs free\n", __func__);
2461 } while (test_and_set_bit(lpid, lpid_inuse));
2465 EXPORT_SYMBOL_GPL(kvmppc_alloc_lpid);
2467 void kvmppc_claim_lpid(long lpid)
2469 set_bit(lpid, lpid_inuse);
2471 EXPORT_SYMBOL_GPL(kvmppc_claim_lpid);
2473 void kvmppc_free_lpid(long lpid)
2475 clear_bit(lpid, lpid_inuse);
2477 EXPORT_SYMBOL_GPL(kvmppc_free_lpid);
2479 void kvmppc_init_lpid(unsigned long nr_lpids_param)
2481 nr_lpids = min_t(unsigned long, KVMPPC_NR_LPIDS, nr_lpids_param);
2482 memset(lpid_inuse, 0, sizeof(lpid_inuse));
2484 EXPORT_SYMBOL_GPL(kvmppc_init_lpid);
2486 int kvm_arch_init(void *opaque)
2491 EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_ppc_instr);