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 vcpu->srcu_idx = srcu_read_lock(&vcpu->kvm->srcu);
407 rc = kvm_read_guest(vcpu->kvm, pte.raddr, ptr, size);
408 srcu_read_unlock(&vcpu->kvm->srcu, vcpu->srcu_idx);
410 return EMULATE_DO_MMIO;
414 EXPORT_SYMBOL_GPL(kvmppc_ld);
416 int kvm_arch_hardware_enable(void)
421 int kvm_arch_hardware_setup(void *opaque)
426 int kvm_arch_check_processor_compat(void *opaque)
428 return kvmppc_core_check_processor_compat();
431 int kvm_arch_init_vm(struct kvm *kvm, unsigned long type)
433 struct kvmppc_ops *kvm_ops = NULL;
435 * if we have both HV and PR enabled, default is HV
439 kvm_ops = kvmppc_hv_ops;
441 kvm_ops = kvmppc_pr_ops;
444 } else if (type == KVM_VM_PPC_HV) {
447 kvm_ops = kvmppc_hv_ops;
448 } else if (type == KVM_VM_PPC_PR) {
451 kvm_ops = kvmppc_pr_ops;
455 if (kvm_ops->owner && !try_module_get(kvm_ops->owner))
458 kvm->arch.kvm_ops = kvm_ops;
459 return kvmppc_core_init_vm(kvm);
464 void kvm_arch_destroy_vm(struct kvm *kvm)
467 struct kvm_vcpu *vcpu;
469 #ifdef CONFIG_KVM_XICS
471 * We call kick_all_cpus_sync() to ensure that all
472 * CPUs have executed any pending IPIs before we
473 * continue and free VCPUs structures below.
475 if (is_kvmppc_hv_enabled(kvm))
476 kick_all_cpus_sync();
479 kvm_for_each_vcpu(i, vcpu, kvm)
480 kvm_vcpu_destroy(vcpu);
482 mutex_lock(&kvm->lock);
483 for (i = 0; i < atomic_read(&kvm->online_vcpus); i++)
484 kvm->vcpus[i] = NULL;
486 atomic_set(&kvm->online_vcpus, 0);
488 kvmppc_core_destroy_vm(kvm);
490 mutex_unlock(&kvm->lock);
492 /* drop the module reference */
493 module_put(kvm->arch.kvm_ops->owner);
496 int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext)
499 /* Assume we're using HV mode when the HV module is loaded */
500 int hv_enabled = kvmppc_hv_ops ? 1 : 0;
504 * Hooray - we know which VM type we're running on. Depend on
505 * that rather than the guess above.
507 hv_enabled = is_kvmppc_hv_enabled(kvm);
512 case KVM_CAP_PPC_BOOKE_SREGS:
513 case KVM_CAP_PPC_BOOKE_WATCHDOG:
514 case KVM_CAP_PPC_EPR:
516 case KVM_CAP_PPC_SEGSTATE:
517 case KVM_CAP_PPC_HIOR:
518 case KVM_CAP_PPC_PAPR:
520 case KVM_CAP_PPC_UNSET_IRQ:
521 case KVM_CAP_PPC_IRQ_LEVEL:
522 case KVM_CAP_ENABLE_CAP:
523 case KVM_CAP_ONE_REG:
524 case KVM_CAP_IOEVENTFD:
525 case KVM_CAP_DEVICE_CTRL:
526 case KVM_CAP_IMMEDIATE_EXIT:
527 case KVM_CAP_SET_GUEST_DEBUG:
530 case KVM_CAP_PPC_GUEST_DEBUG_SSTEP:
531 case KVM_CAP_PPC_PAIRED_SINGLES:
532 case KVM_CAP_PPC_OSI:
533 case KVM_CAP_PPC_GET_PVINFO:
534 #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC)
537 /* We support this only for PR */
540 #ifdef CONFIG_KVM_MPIC
541 case KVM_CAP_IRQ_MPIC:
546 #ifdef CONFIG_PPC_BOOK3S_64
547 case KVM_CAP_SPAPR_TCE:
548 case KVM_CAP_SPAPR_TCE_64:
551 case KVM_CAP_SPAPR_TCE_VFIO:
552 r = !!cpu_has_feature(CPU_FTR_HVMODE);
554 case KVM_CAP_PPC_RTAS:
555 case KVM_CAP_PPC_FIXUP_HCALL:
556 case KVM_CAP_PPC_ENABLE_HCALL:
557 #ifdef CONFIG_KVM_XICS
558 case KVM_CAP_IRQ_XICS:
560 case KVM_CAP_PPC_GET_CPU_CHAR:
563 #ifdef CONFIG_KVM_XIVE
564 case KVM_CAP_PPC_IRQ_XIVE:
566 * We need XIVE to be enabled on the platform (implies
567 * a POWER9 processor) and the PowerNV platform, as
568 * nested is not yet supported.
570 r = xive_enabled() && !!cpu_has_feature(CPU_FTR_HVMODE) &&
571 kvmppc_xive_native_supported();
575 case KVM_CAP_PPC_ALLOC_HTAB:
578 #endif /* CONFIG_PPC_BOOK3S_64 */
579 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
580 case KVM_CAP_PPC_SMT:
583 if (kvm->arch.emul_smt_mode > 1)
584 r = kvm->arch.emul_smt_mode;
586 r = kvm->arch.smt_mode;
587 } else if (hv_enabled) {
588 if (cpu_has_feature(CPU_FTR_ARCH_300))
591 r = threads_per_subcore;
594 case KVM_CAP_PPC_SMT_POSSIBLE:
597 if (!cpu_has_feature(CPU_FTR_ARCH_300))
598 r = ((threads_per_subcore << 1) - 1);
600 /* P9 can emulate dbells, so allow any mode */
604 case KVM_CAP_PPC_RMA:
607 case KVM_CAP_PPC_HWRNG:
608 r = kvmppc_hwrng_present();
610 case KVM_CAP_PPC_MMU_RADIX:
611 r = !!(hv_enabled && radix_enabled());
613 case KVM_CAP_PPC_MMU_HASH_V3:
614 r = !!(hv_enabled && cpu_has_feature(CPU_FTR_ARCH_300) &&
615 cpu_has_feature(CPU_FTR_HVMODE));
617 case KVM_CAP_PPC_NESTED_HV:
618 r = !!(hv_enabled && kvmppc_hv_ops->enable_nested &&
619 !kvmppc_hv_ops->enable_nested(NULL));
622 case KVM_CAP_SYNC_MMU:
623 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
625 #elif defined(KVM_ARCH_WANT_MMU_NOTIFIER)
631 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
632 case KVM_CAP_PPC_HTAB_FD:
636 case KVM_CAP_NR_VCPUS:
638 * Recommending a number of CPUs is somewhat arbitrary; we
639 * return the number of present CPUs for -HV (since a host
640 * will have secondary threads "offline"), and for other KVM
641 * implementations just count online CPUs.
644 r = num_present_cpus();
646 r = num_online_cpus();
648 case KVM_CAP_MAX_VCPUS:
651 case KVM_CAP_MAX_VCPU_ID:
654 #ifdef CONFIG_PPC_BOOK3S_64
655 case KVM_CAP_PPC_GET_SMMU_INFO:
658 case KVM_CAP_SPAPR_MULTITCE:
661 case KVM_CAP_SPAPR_RESIZE_HPT:
665 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
666 case KVM_CAP_PPC_FWNMI:
670 #ifdef CONFIG_PPC_TRANSACTIONAL_MEM
671 case KVM_CAP_PPC_HTM:
672 r = !!(cur_cpu_spec->cpu_user_features2 & PPC_FEATURE2_HTM) ||
673 (hv_enabled && cpu_has_feature(CPU_FTR_P9_TM_HV_ASSIST));
676 #if defined(CONFIG_KVM_BOOK3S_HV_POSSIBLE)
677 case KVM_CAP_PPC_SECURE_GUEST:
678 r = hv_enabled && kvmppc_hv_ops->enable_svm &&
679 !kvmppc_hv_ops->enable_svm(NULL);
690 long kvm_arch_dev_ioctl(struct file *filp,
691 unsigned int ioctl, unsigned long arg)
696 void kvm_arch_free_memslot(struct kvm *kvm, struct kvm_memory_slot *slot)
698 kvmppc_core_free_memslot(kvm, slot);
701 int kvm_arch_prepare_memory_region(struct kvm *kvm,
702 struct kvm_memory_slot *memslot,
703 const struct kvm_userspace_memory_region *mem,
704 enum kvm_mr_change change)
706 return kvmppc_core_prepare_memory_region(kvm, memslot, mem, change);
709 void kvm_arch_commit_memory_region(struct kvm *kvm,
710 const struct kvm_userspace_memory_region *mem,
711 struct kvm_memory_slot *old,
712 const struct kvm_memory_slot *new,
713 enum kvm_mr_change change)
715 kvmppc_core_commit_memory_region(kvm, mem, old, new, change);
718 void kvm_arch_flush_shadow_memslot(struct kvm *kvm,
719 struct kvm_memory_slot *slot)
721 kvmppc_core_flush_memslot(kvm, slot);
724 int kvm_arch_vcpu_precreate(struct kvm *kvm, unsigned int id)
729 static enum hrtimer_restart kvmppc_decrementer_wakeup(struct hrtimer *timer)
731 struct kvm_vcpu *vcpu;
733 vcpu = container_of(timer, struct kvm_vcpu, arch.dec_timer);
734 kvmppc_decrementer_func(vcpu);
736 return HRTIMER_NORESTART;
739 int kvm_arch_vcpu_create(struct kvm_vcpu *vcpu)
743 hrtimer_init(&vcpu->arch.dec_timer, CLOCK_REALTIME, HRTIMER_MODE_ABS);
744 vcpu->arch.dec_timer.function = kvmppc_decrementer_wakeup;
745 vcpu->arch.dec_expires = get_tb();
747 #ifdef CONFIG_KVM_EXIT_TIMING
748 mutex_init(&vcpu->arch.exit_timing_lock);
750 err = kvmppc_subarch_vcpu_init(vcpu);
754 err = kvmppc_core_vcpu_create(vcpu);
756 goto out_vcpu_uninit;
758 vcpu->arch.waitp = &vcpu->wait;
759 kvmppc_create_vcpu_debugfs(vcpu, vcpu->vcpu_id);
763 kvmppc_subarch_vcpu_uninit(vcpu);
767 void kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu)
771 void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu)
773 /* Make sure we're not using the vcpu anymore */
774 hrtimer_cancel(&vcpu->arch.dec_timer);
776 kvmppc_remove_vcpu_debugfs(vcpu);
778 switch (vcpu->arch.irq_type) {
779 case KVMPPC_IRQ_MPIC:
780 kvmppc_mpic_disconnect_vcpu(vcpu->arch.mpic, vcpu);
782 case KVMPPC_IRQ_XICS:
784 kvmppc_xive_cleanup_vcpu(vcpu);
786 kvmppc_xics_free_icp(vcpu);
788 case KVMPPC_IRQ_XIVE:
789 kvmppc_xive_native_cleanup_vcpu(vcpu);
793 kvmppc_core_vcpu_free(vcpu);
795 kvmppc_subarch_vcpu_uninit(vcpu);
798 int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu)
800 return kvmppc_core_pending_dec(vcpu);
803 void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
807 * vrsave (formerly usprg0) isn't used by Linux, but may
808 * be used by the guest.
810 * On non-booke this is associated with Altivec and
811 * is handled by code in book3s.c.
813 mtspr(SPRN_VRSAVE, vcpu->arch.vrsave);
815 kvmppc_core_vcpu_load(vcpu, cpu);
818 void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu)
820 kvmppc_core_vcpu_put(vcpu);
822 vcpu->arch.vrsave = mfspr(SPRN_VRSAVE);
827 * irq_bypass_add_producer and irq_bypass_del_producer are only
828 * useful if the architecture supports PCI passthrough.
829 * irq_bypass_stop and irq_bypass_start are not needed and so
830 * kvm_ops are not defined for them.
832 bool kvm_arch_has_irq_bypass(void)
834 return ((kvmppc_hv_ops && kvmppc_hv_ops->irq_bypass_add_producer) ||
835 (kvmppc_pr_ops && kvmppc_pr_ops->irq_bypass_add_producer));
838 int kvm_arch_irq_bypass_add_producer(struct irq_bypass_consumer *cons,
839 struct irq_bypass_producer *prod)
841 struct kvm_kernel_irqfd *irqfd =
842 container_of(cons, struct kvm_kernel_irqfd, consumer);
843 struct kvm *kvm = irqfd->kvm;
845 if (kvm->arch.kvm_ops->irq_bypass_add_producer)
846 return kvm->arch.kvm_ops->irq_bypass_add_producer(cons, prod);
851 void kvm_arch_irq_bypass_del_producer(struct irq_bypass_consumer *cons,
852 struct irq_bypass_producer *prod)
854 struct kvm_kernel_irqfd *irqfd =
855 container_of(cons, struct kvm_kernel_irqfd, consumer);
856 struct kvm *kvm = irqfd->kvm;
858 if (kvm->arch.kvm_ops->irq_bypass_del_producer)
859 kvm->arch.kvm_ops->irq_bypass_del_producer(cons, prod);
863 static inline int kvmppc_get_vsr_dword_offset(int index)
867 if ((index != 0) && (index != 1))
879 static inline int kvmppc_get_vsr_word_offset(int index)
883 if ((index > 3) || (index < 0))
894 static inline void kvmppc_set_vsr_dword(struct kvm_vcpu *vcpu,
897 union kvmppc_one_reg val;
898 int offset = kvmppc_get_vsr_dword_offset(vcpu->arch.mmio_vsx_offset);
899 int index = vcpu->arch.io_gpr & KVM_MMIO_REG_MASK;
905 val.vval = VCPU_VSX_VR(vcpu, index - 32);
906 val.vsxval[offset] = gpr;
907 VCPU_VSX_VR(vcpu, index - 32) = val.vval;
909 VCPU_VSX_FPR(vcpu, index, offset) = gpr;
913 static inline void kvmppc_set_vsr_dword_dump(struct kvm_vcpu *vcpu,
916 union kvmppc_one_reg val;
917 int index = vcpu->arch.io_gpr & KVM_MMIO_REG_MASK;
920 val.vval = VCPU_VSX_VR(vcpu, index - 32);
923 VCPU_VSX_VR(vcpu, index - 32) = val.vval;
925 VCPU_VSX_FPR(vcpu, index, 0) = gpr;
926 VCPU_VSX_FPR(vcpu, index, 1) = gpr;
930 static inline void kvmppc_set_vsr_word_dump(struct kvm_vcpu *vcpu,
933 union kvmppc_one_reg val;
934 int index = vcpu->arch.io_gpr & KVM_MMIO_REG_MASK;
937 val.vsx32val[0] = gpr;
938 val.vsx32val[1] = gpr;
939 val.vsx32val[2] = gpr;
940 val.vsx32val[3] = gpr;
941 VCPU_VSX_VR(vcpu, index - 32) = val.vval;
943 val.vsx32val[0] = gpr;
944 val.vsx32val[1] = gpr;
945 VCPU_VSX_FPR(vcpu, index, 0) = val.vsxval[0];
946 VCPU_VSX_FPR(vcpu, index, 1) = val.vsxval[0];
950 static inline void kvmppc_set_vsr_word(struct kvm_vcpu *vcpu,
953 union kvmppc_one_reg val;
954 int offset = kvmppc_get_vsr_word_offset(vcpu->arch.mmio_vsx_offset);
955 int index = vcpu->arch.io_gpr & KVM_MMIO_REG_MASK;
956 int dword_offset, word_offset;
962 val.vval = VCPU_VSX_VR(vcpu, index - 32);
963 val.vsx32val[offset] = gpr32;
964 VCPU_VSX_VR(vcpu, index - 32) = val.vval;
966 dword_offset = offset / 2;
967 word_offset = offset % 2;
968 val.vsxval[0] = VCPU_VSX_FPR(vcpu, index, dword_offset);
969 val.vsx32val[word_offset] = gpr32;
970 VCPU_VSX_FPR(vcpu, index, dword_offset) = val.vsxval[0];
973 #endif /* CONFIG_VSX */
975 #ifdef CONFIG_ALTIVEC
976 static inline int kvmppc_get_vmx_offset_generic(struct kvm_vcpu *vcpu,
977 int index, int element_size)
980 int elts = sizeof(vector128)/element_size;
982 if ((index < 0) || (index >= elts))
985 if (kvmppc_need_byteswap(vcpu))
986 offset = elts - index - 1;
993 static inline int kvmppc_get_vmx_dword_offset(struct kvm_vcpu *vcpu,
996 return kvmppc_get_vmx_offset_generic(vcpu, index, 8);
999 static inline int kvmppc_get_vmx_word_offset(struct kvm_vcpu *vcpu,
1002 return kvmppc_get_vmx_offset_generic(vcpu, index, 4);
1005 static inline int kvmppc_get_vmx_hword_offset(struct kvm_vcpu *vcpu,
1008 return kvmppc_get_vmx_offset_generic(vcpu, index, 2);
1011 static inline int kvmppc_get_vmx_byte_offset(struct kvm_vcpu *vcpu,
1014 return kvmppc_get_vmx_offset_generic(vcpu, index, 1);
1018 static inline void kvmppc_set_vmx_dword(struct kvm_vcpu *vcpu,
1021 union kvmppc_one_reg val;
1022 int offset = kvmppc_get_vmx_dword_offset(vcpu,
1023 vcpu->arch.mmio_vmx_offset);
1024 int index = vcpu->arch.io_gpr & KVM_MMIO_REG_MASK;
1029 val.vval = VCPU_VSX_VR(vcpu, index);
1030 val.vsxval[offset] = gpr;
1031 VCPU_VSX_VR(vcpu, index) = val.vval;
1034 static inline void kvmppc_set_vmx_word(struct kvm_vcpu *vcpu,
1037 union kvmppc_one_reg val;
1038 int offset = kvmppc_get_vmx_word_offset(vcpu,
1039 vcpu->arch.mmio_vmx_offset);
1040 int index = vcpu->arch.io_gpr & KVM_MMIO_REG_MASK;
1045 val.vval = VCPU_VSX_VR(vcpu, index);
1046 val.vsx32val[offset] = gpr32;
1047 VCPU_VSX_VR(vcpu, index) = val.vval;
1050 static inline void kvmppc_set_vmx_hword(struct kvm_vcpu *vcpu,
1053 union kvmppc_one_reg val;
1054 int offset = kvmppc_get_vmx_hword_offset(vcpu,
1055 vcpu->arch.mmio_vmx_offset);
1056 int index = vcpu->arch.io_gpr & KVM_MMIO_REG_MASK;
1061 val.vval = VCPU_VSX_VR(vcpu, index);
1062 val.vsx16val[offset] = gpr16;
1063 VCPU_VSX_VR(vcpu, index) = val.vval;
1066 static inline void kvmppc_set_vmx_byte(struct kvm_vcpu *vcpu,
1069 union kvmppc_one_reg val;
1070 int offset = kvmppc_get_vmx_byte_offset(vcpu,
1071 vcpu->arch.mmio_vmx_offset);
1072 int index = vcpu->arch.io_gpr & KVM_MMIO_REG_MASK;
1077 val.vval = VCPU_VSX_VR(vcpu, index);
1078 val.vsx8val[offset] = gpr8;
1079 VCPU_VSX_VR(vcpu, index) = val.vval;
1081 #endif /* CONFIG_ALTIVEC */
1083 #ifdef CONFIG_PPC_FPU
1084 static inline u64 sp_to_dp(u32 fprs)
1090 asm ("lfs%U1%X1 0,%1; stfd%U0%X0 0,%0" : "=m" (fprd) : "m" (fprs)
1096 static inline u32 dp_to_sp(u64 fprd)
1102 asm ("lfd%U1%X1 0,%1; stfs%U0%X0 0,%0" : "=m" (fprs) : "m" (fprd)
1109 #define sp_to_dp(x) (x)
1110 #define dp_to_sp(x) (x)
1111 #endif /* CONFIG_PPC_FPU */
1113 static void kvmppc_complete_mmio_load(struct kvm_vcpu *vcpu)
1115 struct kvm_run *run = vcpu->run;
1118 if (run->mmio.len > sizeof(gpr)) {
1119 printk(KERN_ERR "bad MMIO length: %d\n", run->mmio.len);
1123 if (!vcpu->arch.mmio_host_swabbed) {
1124 switch (run->mmio.len) {
1125 case 8: gpr = *(u64 *)run->mmio.data; break;
1126 case 4: gpr = *(u32 *)run->mmio.data; break;
1127 case 2: gpr = *(u16 *)run->mmio.data; break;
1128 case 1: gpr = *(u8 *)run->mmio.data; break;
1131 switch (run->mmio.len) {
1132 case 8: gpr = swab64(*(u64 *)run->mmio.data); break;
1133 case 4: gpr = swab32(*(u32 *)run->mmio.data); break;
1134 case 2: gpr = swab16(*(u16 *)run->mmio.data); break;
1135 case 1: gpr = *(u8 *)run->mmio.data; break;
1139 /* conversion between single and double precision */
1140 if ((vcpu->arch.mmio_sp64_extend) && (run->mmio.len == 4))
1141 gpr = sp_to_dp(gpr);
1143 if (vcpu->arch.mmio_sign_extend) {
1144 switch (run->mmio.len) {
1147 gpr = (s64)(s32)gpr;
1151 gpr = (s64)(s16)gpr;
1159 switch (vcpu->arch.io_gpr & KVM_MMIO_REG_EXT_MASK) {
1160 case KVM_MMIO_REG_GPR:
1161 kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, gpr);
1163 case KVM_MMIO_REG_FPR:
1164 if (vcpu->kvm->arch.kvm_ops->giveup_ext)
1165 vcpu->kvm->arch.kvm_ops->giveup_ext(vcpu, MSR_FP);
1167 VCPU_FPR(vcpu, vcpu->arch.io_gpr & KVM_MMIO_REG_MASK) = gpr;
1169 #ifdef CONFIG_PPC_BOOK3S
1170 case KVM_MMIO_REG_QPR:
1171 vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr;
1173 case KVM_MMIO_REG_FQPR:
1174 VCPU_FPR(vcpu, vcpu->arch.io_gpr & KVM_MMIO_REG_MASK) = gpr;
1175 vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr;
1179 case KVM_MMIO_REG_VSX:
1180 if (vcpu->kvm->arch.kvm_ops->giveup_ext)
1181 vcpu->kvm->arch.kvm_ops->giveup_ext(vcpu, MSR_VSX);
1183 if (vcpu->arch.mmio_copy_type == KVMPPC_VSX_COPY_DWORD)
1184 kvmppc_set_vsr_dword(vcpu, gpr);
1185 else if (vcpu->arch.mmio_copy_type == KVMPPC_VSX_COPY_WORD)
1186 kvmppc_set_vsr_word(vcpu, gpr);
1187 else if (vcpu->arch.mmio_copy_type ==
1188 KVMPPC_VSX_COPY_DWORD_LOAD_DUMP)
1189 kvmppc_set_vsr_dword_dump(vcpu, gpr);
1190 else if (vcpu->arch.mmio_copy_type ==
1191 KVMPPC_VSX_COPY_WORD_LOAD_DUMP)
1192 kvmppc_set_vsr_word_dump(vcpu, gpr);
1195 #ifdef CONFIG_ALTIVEC
1196 case KVM_MMIO_REG_VMX:
1197 if (vcpu->kvm->arch.kvm_ops->giveup_ext)
1198 vcpu->kvm->arch.kvm_ops->giveup_ext(vcpu, MSR_VEC);
1200 if (vcpu->arch.mmio_copy_type == KVMPPC_VMX_COPY_DWORD)
1201 kvmppc_set_vmx_dword(vcpu, gpr);
1202 else if (vcpu->arch.mmio_copy_type == KVMPPC_VMX_COPY_WORD)
1203 kvmppc_set_vmx_word(vcpu, gpr);
1204 else if (vcpu->arch.mmio_copy_type ==
1205 KVMPPC_VMX_COPY_HWORD)
1206 kvmppc_set_vmx_hword(vcpu, gpr);
1207 else if (vcpu->arch.mmio_copy_type ==
1208 KVMPPC_VMX_COPY_BYTE)
1209 kvmppc_set_vmx_byte(vcpu, gpr);
1212 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
1213 case KVM_MMIO_REG_NESTED_GPR:
1214 if (kvmppc_need_byteswap(vcpu))
1216 kvm_vcpu_write_guest(vcpu, vcpu->arch.nested_io_gpr, &gpr,
1225 static int __kvmppc_handle_load(struct kvm_vcpu *vcpu,
1226 unsigned int rt, unsigned int bytes,
1227 int is_default_endian, int sign_extend)
1229 struct kvm_run *run = vcpu->run;
1233 /* Pity C doesn't have a logical XOR operator */
1234 if (kvmppc_need_byteswap(vcpu)) {
1235 host_swabbed = is_default_endian;
1237 host_swabbed = !is_default_endian;
1240 if (bytes > sizeof(run->mmio.data)) {
1241 printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__,
1245 run->mmio.phys_addr = vcpu->arch.paddr_accessed;
1246 run->mmio.len = bytes;
1247 run->mmio.is_write = 0;
1249 vcpu->arch.io_gpr = rt;
1250 vcpu->arch.mmio_host_swabbed = host_swabbed;
1251 vcpu->mmio_needed = 1;
1252 vcpu->mmio_is_write = 0;
1253 vcpu->arch.mmio_sign_extend = sign_extend;
1255 idx = srcu_read_lock(&vcpu->kvm->srcu);
1257 ret = kvm_io_bus_read(vcpu, KVM_MMIO_BUS, run->mmio.phys_addr,
1258 bytes, &run->mmio.data);
1260 srcu_read_unlock(&vcpu->kvm->srcu, idx);
1263 kvmppc_complete_mmio_load(vcpu);
1264 vcpu->mmio_needed = 0;
1265 return EMULATE_DONE;
1268 return EMULATE_DO_MMIO;
1271 int kvmppc_handle_load(struct kvm_vcpu *vcpu,
1272 unsigned int rt, unsigned int bytes,
1273 int is_default_endian)
1275 return __kvmppc_handle_load(vcpu, rt, bytes, is_default_endian, 0);
1277 EXPORT_SYMBOL_GPL(kvmppc_handle_load);
1279 /* Same as above, but sign extends */
1280 int kvmppc_handle_loads(struct kvm_vcpu *vcpu,
1281 unsigned int rt, unsigned int bytes,
1282 int is_default_endian)
1284 return __kvmppc_handle_load(vcpu, rt, bytes, is_default_endian, 1);
1288 int kvmppc_handle_vsx_load(struct kvm_vcpu *vcpu,
1289 unsigned int rt, unsigned int bytes,
1290 int is_default_endian, int mmio_sign_extend)
1292 enum emulation_result emulated = EMULATE_DONE;
1294 /* Currently, mmio_vsx_copy_nums only allowed to be 4 or less */
1295 if (vcpu->arch.mmio_vsx_copy_nums > 4)
1296 return EMULATE_FAIL;
1298 while (vcpu->arch.mmio_vsx_copy_nums) {
1299 emulated = __kvmppc_handle_load(vcpu, rt, bytes,
1300 is_default_endian, mmio_sign_extend);
1302 if (emulated != EMULATE_DONE)
1305 vcpu->arch.paddr_accessed += vcpu->run->mmio.len;
1307 vcpu->arch.mmio_vsx_copy_nums--;
1308 vcpu->arch.mmio_vsx_offset++;
1312 #endif /* CONFIG_VSX */
1314 int kvmppc_handle_store(struct kvm_vcpu *vcpu,
1315 u64 val, unsigned int bytes, int is_default_endian)
1317 struct kvm_run *run = vcpu->run;
1318 void *data = run->mmio.data;
1322 /* Pity C doesn't have a logical XOR operator */
1323 if (kvmppc_need_byteswap(vcpu)) {
1324 host_swabbed = is_default_endian;
1326 host_swabbed = !is_default_endian;
1329 if (bytes > sizeof(run->mmio.data)) {
1330 printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__,
1334 run->mmio.phys_addr = vcpu->arch.paddr_accessed;
1335 run->mmio.len = bytes;
1336 run->mmio.is_write = 1;
1337 vcpu->mmio_needed = 1;
1338 vcpu->mmio_is_write = 1;
1340 if ((vcpu->arch.mmio_sp64_extend) && (bytes == 4))
1341 val = dp_to_sp(val);
1343 /* Store the value at the lowest bytes in 'data'. */
1344 if (!host_swabbed) {
1346 case 8: *(u64 *)data = val; break;
1347 case 4: *(u32 *)data = val; break;
1348 case 2: *(u16 *)data = val; break;
1349 case 1: *(u8 *)data = val; break;
1353 case 8: *(u64 *)data = swab64(val); break;
1354 case 4: *(u32 *)data = swab32(val); break;
1355 case 2: *(u16 *)data = swab16(val); break;
1356 case 1: *(u8 *)data = val; break;
1360 idx = srcu_read_lock(&vcpu->kvm->srcu);
1362 ret = kvm_io_bus_write(vcpu, KVM_MMIO_BUS, run->mmio.phys_addr,
1363 bytes, &run->mmio.data);
1365 srcu_read_unlock(&vcpu->kvm->srcu, idx);
1368 vcpu->mmio_needed = 0;
1369 return EMULATE_DONE;
1372 return EMULATE_DO_MMIO;
1374 EXPORT_SYMBOL_GPL(kvmppc_handle_store);
1377 static inline int kvmppc_get_vsr_data(struct kvm_vcpu *vcpu, int rs, u64 *val)
1379 u32 dword_offset, word_offset;
1380 union kvmppc_one_reg reg;
1382 int copy_type = vcpu->arch.mmio_copy_type;
1385 switch (copy_type) {
1386 case KVMPPC_VSX_COPY_DWORD:
1388 kvmppc_get_vsr_dword_offset(vcpu->arch.mmio_vsx_offset);
1390 if (vsx_offset == -1) {
1396 *val = VCPU_VSX_FPR(vcpu, rs, vsx_offset);
1398 reg.vval = VCPU_VSX_VR(vcpu, rs - 32);
1399 *val = reg.vsxval[vsx_offset];
1403 case KVMPPC_VSX_COPY_WORD:
1405 kvmppc_get_vsr_word_offset(vcpu->arch.mmio_vsx_offset);
1407 if (vsx_offset == -1) {
1413 dword_offset = vsx_offset / 2;
1414 word_offset = vsx_offset % 2;
1415 reg.vsxval[0] = VCPU_VSX_FPR(vcpu, rs, dword_offset);
1416 *val = reg.vsx32val[word_offset];
1418 reg.vval = VCPU_VSX_VR(vcpu, rs - 32);
1419 *val = reg.vsx32val[vsx_offset];
1431 int kvmppc_handle_vsx_store(struct kvm_vcpu *vcpu,
1432 int rs, unsigned int bytes, int is_default_endian)
1435 enum emulation_result emulated = EMULATE_DONE;
1437 vcpu->arch.io_gpr = rs;
1439 /* Currently, mmio_vsx_copy_nums only allowed to be 4 or less */
1440 if (vcpu->arch.mmio_vsx_copy_nums > 4)
1441 return EMULATE_FAIL;
1443 while (vcpu->arch.mmio_vsx_copy_nums) {
1444 if (kvmppc_get_vsr_data(vcpu, rs, &val) == -1)
1445 return EMULATE_FAIL;
1447 emulated = kvmppc_handle_store(vcpu,
1448 val, bytes, is_default_endian);
1450 if (emulated != EMULATE_DONE)
1453 vcpu->arch.paddr_accessed += vcpu->run->mmio.len;
1455 vcpu->arch.mmio_vsx_copy_nums--;
1456 vcpu->arch.mmio_vsx_offset++;
1462 static int kvmppc_emulate_mmio_vsx_loadstore(struct kvm_vcpu *vcpu)
1464 struct kvm_run *run = vcpu->run;
1465 enum emulation_result emulated = EMULATE_FAIL;
1468 vcpu->arch.paddr_accessed += run->mmio.len;
1470 if (!vcpu->mmio_is_write) {
1471 emulated = kvmppc_handle_vsx_load(vcpu, vcpu->arch.io_gpr,
1472 run->mmio.len, 1, vcpu->arch.mmio_sign_extend);
1474 emulated = kvmppc_handle_vsx_store(vcpu,
1475 vcpu->arch.io_gpr, run->mmio.len, 1);
1479 case EMULATE_DO_MMIO:
1480 run->exit_reason = KVM_EXIT_MMIO;
1484 pr_info("KVM: MMIO emulation failed (VSX repeat)\n");
1485 run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
1486 run->internal.suberror = KVM_INTERNAL_ERROR_EMULATION;
1495 #endif /* CONFIG_VSX */
1497 #ifdef CONFIG_ALTIVEC
1498 int kvmppc_handle_vmx_load(struct kvm_vcpu *vcpu,
1499 unsigned int rt, unsigned int bytes, int is_default_endian)
1501 enum emulation_result emulated = EMULATE_DONE;
1503 if (vcpu->arch.mmio_vmx_copy_nums > 2)
1504 return EMULATE_FAIL;
1506 while (vcpu->arch.mmio_vmx_copy_nums) {
1507 emulated = __kvmppc_handle_load(vcpu, rt, bytes,
1508 is_default_endian, 0);
1510 if (emulated != EMULATE_DONE)
1513 vcpu->arch.paddr_accessed += vcpu->run->mmio.len;
1514 vcpu->arch.mmio_vmx_copy_nums--;
1515 vcpu->arch.mmio_vmx_offset++;
1521 static int kvmppc_get_vmx_dword(struct kvm_vcpu *vcpu, int index, u64 *val)
1523 union kvmppc_one_reg reg;
1528 kvmppc_get_vmx_dword_offset(vcpu, vcpu->arch.mmio_vmx_offset);
1530 if (vmx_offset == -1)
1533 reg.vval = VCPU_VSX_VR(vcpu, index);
1534 *val = reg.vsxval[vmx_offset];
1539 static int kvmppc_get_vmx_word(struct kvm_vcpu *vcpu, int index, u64 *val)
1541 union kvmppc_one_reg reg;
1546 kvmppc_get_vmx_word_offset(vcpu, vcpu->arch.mmio_vmx_offset);
1548 if (vmx_offset == -1)
1551 reg.vval = VCPU_VSX_VR(vcpu, index);
1552 *val = reg.vsx32val[vmx_offset];
1557 static int kvmppc_get_vmx_hword(struct kvm_vcpu *vcpu, int index, u64 *val)
1559 union kvmppc_one_reg reg;
1564 kvmppc_get_vmx_hword_offset(vcpu, vcpu->arch.mmio_vmx_offset);
1566 if (vmx_offset == -1)
1569 reg.vval = VCPU_VSX_VR(vcpu, index);
1570 *val = reg.vsx16val[vmx_offset];
1575 static int kvmppc_get_vmx_byte(struct kvm_vcpu *vcpu, int index, u64 *val)
1577 union kvmppc_one_reg reg;
1582 kvmppc_get_vmx_byte_offset(vcpu, vcpu->arch.mmio_vmx_offset);
1584 if (vmx_offset == -1)
1587 reg.vval = VCPU_VSX_VR(vcpu, index);
1588 *val = reg.vsx8val[vmx_offset];
1593 int kvmppc_handle_vmx_store(struct kvm_vcpu *vcpu,
1594 unsigned int rs, unsigned int bytes, int is_default_endian)
1597 unsigned int index = rs & KVM_MMIO_REG_MASK;
1598 enum emulation_result emulated = EMULATE_DONE;
1600 if (vcpu->arch.mmio_vmx_copy_nums > 2)
1601 return EMULATE_FAIL;
1603 vcpu->arch.io_gpr = rs;
1605 while (vcpu->arch.mmio_vmx_copy_nums) {
1606 switch (vcpu->arch.mmio_copy_type) {
1607 case KVMPPC_VMX_COPY_DWORD:
1608 if (kvmppc_get_vmx_dword(vcpu, index, &val) == -1)
1609 return EMULATE_FAIL;
1612 case KVMPPC_VMX_COPY_WORD:
1613 if (kvmppc_get_vmx_word(vcpu, index, &val) == -1)
1614 return EMULATE_FAIL;
1616 case KVMPPC_VMX_COPY_HWORD:
1617 if (kvmppc_get_vmx_hword(vcpu, index, &val) == -1)
1618 return EMULATE_FAIL;
1620 case KVMPPC_VMX_COPY_BYTE:
1621 if (kvmppc_get_vmx_byte(vcpu, index, &val) == -1)
1622 return EMULATE_FAIL;
1625 return EMULATE_FAIL;
1628 emulated = kvmppc_handle_store(vcpu, val, bytes,
1630 if (emulated != EMULATE_DONE)
1633 vcpu->arch.paddr_accessed += vcpu->run->mmio.len;
1634 vcpu->arch.mmio_vmx_copy_nums--;
1635 vcpu->arch.mmio_vmx_offset++;
1641 static int kvmppc_emulate_mmio_vmx_loadstore(struct kvm_vcpu *vcpu)
1643 struct kvm_run *run = vcpu->run;
1644 enum emulation_result emulated = EMULATE_FAIL;
1647 vcpu->arch.paddr_accessed += run->mmio.len;
1649 if (!vcpu->mmio_is_write) {
1650 emulated = kvmppc_handle_vmx_load(vcpu,
1651 vcpu->arch.io_gpr, run->mmio.len, 1);
1653 emulated = kvmppc_handle_vmx_store(vcpu,
1654 vcpu->arch.io_gpr, run->mmio.len, 1);
1658 case EMULATE_DO_MMIO:
1659 run->exit_reason = KVM_EXIT_MMIO;
1663 pr_info("KVM: MMIO emulation failed (VMX repeat)\n");
1664 run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
1665 run->internal.suberror = KVM_INTERNAL_ERROR_EMULATION;
1674 #endif /* CONFIG_ALTIVEC */
1676 int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg)
1679 union kvmppc_one_reg val;
1682 size = one_reg_size(reg->id);
1683 if (size > sizeof(val))
1686 r = kvmppc_get_one_reg(vcpu, reg->id, &val);
1690 #ifdef CONFIG_ALTIVEC
1691 case KVM_REG_PPC_VR0 ... KVM_REG_PPC_VR31:
1692 if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
1696 val.vval = vcpu->arch.vr.vr[reg->id - KVM_REG_PPC_VR0];
1698 case KVM_REG_PPC_VSCR:
1699 if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
1703 val = get_reg_val(reg->id, vcpu->arch.vr.vscr.u[3]);
1705 case KVM_REG_PPC_VRSAVE:
1706 val = get_reg_val(reg->id, vcpu->arch.vrsave);
1708 #endif /* CONFIG_ALTIVEC */
1718 if (copy_to_user((char __user *)(unsigned long)reg->addr, &val, size))
1724 int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg)
1727 union kvmppc_one_reg val;
1730 size = one_reg_size(reg->id);
1731 if (size > sizeof(val))
1734 if (copy_from_user(&val, (char __user *)(unsigned long)reg->addr, size))
1737 r = kvmppc_set_one_reg(vcpu, reg->id, &val);
1741 #ifdef CONFIG_ALTIVEC
1742 case KVM_REG_PPC_VR0 ... KVM_REG_PPC_VR31:
1743 if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
1747 vcpu->arch.vr.vr[reg->id - KVM_REG_PPC_VR0] = val.vval;
1749 case KVM_REG_PPC_VSCR:
1750 if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
1754 vcpu->arch.vr.vscr.u[3] = set_reg_val(reg->id, val);
1756 case KVM_REG_PPC_VRSAVE:
1757 if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
1761 vcpu->arch.vrsave = set_reg_val(reg->id, val);
1763 #endif /* CONFIG_ALTIVEC */
1773 int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu)
1775 struct kvm_run *run = vcpu->run;
1780 if (vcpu->mmio_needed) {
1781 vcpu->mmio_needed = 0;
1782 if (!vcpu->mmio_is_write)
1783 kvmppc_complete_mmio_load(vcpu);
1785 if (vcpu->arch.mmio_vsx_copy_nums > 0) {
1786 vcpu->arch.mmio_vsx_copy_nums--;
1787 vcpu->arch.mmio_vsx_offset++;
1790 if (vcpu->arch.mmio_vsx_copy_nums > 0) {
1791 r = kvmppc_emulate_mmio_vsx_loadstore(vcpu);
1792 if (r == RESUME_HOST) {
1793 vcpu->mmio_needed = 1;
1798 #ifdef CONFIG_ALTIVEC
1799 if (vcpu->arch.mmio_vmx_copy_nums > 0) {
1800 vcpu->arch.mmio_vmx_copy_nums--;
1801 vcpu->arch.mmio_vmx_offset++;
1804 if (vcpu->arch.mmio_vmx_copy_nums > 0) {
1805 r = kvmppc_emulate_mmio_vmx_loadstore(vcpu);
1806 if (r == RESUME_HOST) {
1807 vcpu->mmio_needed = 1;
1812 } else if (vcpu->arch.osi_needed) {
1813 u64 *gprs = run->osi.gprs;
1816 for (i = 0; i < 32; i++)
1817 kvmppc_set_gpr(vcpu, i, gprs[i]);
1818 vcpu->arch.osi_needed = 0;
1819 } else if (vcpu->arch.hcall_needed) {
1822 kvmppc_set_gpr(vcpu, 3, run->papr_hcall.ret);
1823 for (i = 0; i < 9; ++i)
1824 kvmppc_set_gpr(vcpu, 4 + i, run->papr_hcall.args[i]);
1825 vcpu->arch.hcall_needed = 0;
1827 } else if (vcpu->arch.epr_needed) {
1828 kvmppc_set_epr(vcpu, run->epr.epr);
1829 vcpu->arch.epr_needed = 0;
1833 kvm_sigset_activate(vcpu);
1835 if (run->immediate_exit)
1838 r = kvmppc_vcpu_run(vcpu);
1840 kvm_sigset_deactivate(vcpu);
1842 #ifdef CONFIG_ALTIVEC
1849 int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq)
1851 if (irq->irq == KVM_INTERRUPT_UNSET) {
1852 kvmppc_core_dequeue_external(vcpu);
1856 kvmppc_core_queue_external(vcpu, irq);
1858 kvm_vcpu_kick(vcpu);
1863 static int kvm_vcpu_ioctl_enable_cap(struct kvm_vcpu *vcpu,
1864 struct kvm_enable_cap *cap)
1872 case KVM_CAP_PPC_OSI:
1874 vcpu->arch.osi_enabled = true;
1876 case KVM_CAP_PPC_PAPR:
1878 vcpu->arch.papr_enabled = true;
1880 case KVM_CAP_PPC_EPR:
1883 vcpu->arch.epr_flags |= KVMPPC_EPR_USER;
1885 vcpu->arch.epr_flags &= ~KVMPPC_EPR_USER;
1888 case KVM_CAP_PPC_BOOKE_WATCHDOG:
1890 vcpu->arch.watchdog_enabled = true;
1893 #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC)
1894 case KVM_CAP_SW_TLB: {
1895 struct kvm_config_tlb cfg;
1896 void __user *user_ptr = (void __user *)(uintptr_t)cap->args[0];
1899 if (copy_from_user(&cfg, user_ptr, sizeof(cfg)))
1902 r = kvm_vcpu_ioctl_config_tlb(vcpu, &cfg);
1906 #ifdef CONFIG_KVM_MPIC
1907 case KVM_CAP_IRQ_MPIC: {
1909 struct kvm_device *dev;
1912 f = fdget(cap->args[0]);
1917 dev = kvm_device_from_filp(f.file);
1919 r = kvmppc_mpic_connect_vcpu(dev, vcpu, cap->args[1]);
1925 #ifdef CONFIG_KVM_XICS
1926 case KVM_CAP_IRQ_XICS: {
1928 struct kvm_device *dev;
1931 f = fdget(cap->args[0]);
1936 dev = kvm_device_from_filp(f.file);
1939 r = kvmppc_xive_connect_vcpu(dev, vcpu, cap->args[1]);
1941 r = kvmppc_xics_connect_vcpu(dev, vcpu, cap->args[1]);
1947 #endif /* CONFIG_KVM_XICS */
1948 #ifdef CONFIG_KVM_XIVE
1949 case KVM_CAP_PPC_IRQ_XIVE: {
1951 struct kvm_device *dev;
1954 f = fdget(cap->args[0]);
1959 if (!xive_enabled())
1963 dev = kvm_device_from_filp(f.file);
1965 r = kvmppc_xive_native_connect_vcpu(dev, vcpu,
1971 #endif /* CONFIG_KVM_XIVE */
1972 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
1973 case KVM_CAP_PPC_FWNMI:
1975 if (!is_kvmppc_hv_enabled(vcpu->kvm))
1978 vcpu->kvm->arch.fwnmi_enabled = true;
1980 #endif /* CONFIG_KVM_BOOK3S_HV_POSSIBLE */
1987 r = kvmppc_sanity_check(vcpu);
1992 bool kvm_arch_intc_initialized(struct kvm *kvm)
1994 #ifdef CONFIG_KVM_MPIC
1998 #ifdef CONFIG_KVM_XICS
1999 if (kvm->arch.xics || kvm->arch.xive)
2005 int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu,
2006 struct kvm_mp_state *mp_state)
2011 int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,
2012 struct kvm_mp_state *mp_state)
2017 long kvm_arch_vcpu_async_ioctl(struct file *filp,
2018 unsigned int ioctl, unsigned long arg)
2020 struct kvm_vcpu *vcpu = filp->private_data;
2021 void __user *argp = (void __user *)arg;
2023 if (ioctl == KVM_INTERRUPT) {
2024 struct kvm_interrupt irq;
2025 if (copy_from_user(&irq, argp, sizeof(irq)))
2027 return kvm_vcpu_ioctl_interrupt(vcpu, &irq);
2029 return -ENOIOCTLCMD;
2032 long kvm_arch_vcpu_ioctl(struct file *filp,
2033 unsigned int ioctl, unsigned long arg)
2035 struct kvm_vcpu *vcpu = filp->private_data;
2036 void __user *argp = (void __user *)arg;
2040 case KVM_ENABLE_CAP:
2042 struct kvm_enable_cap cap;
2044 if (copy_from_user(&cap, argp, sizeof(cap)))
2047 r = kvm_vcpu_ioctl_enable_cap(vcpu, &cap);
2052 case KVM_SET_ONE_REG:
2053 case KVM_GET_ONE_REG:
2055 struct kvm_one_reg reg;
2057 if (copy_from_user(®, argp, sizeof(reg)))
2059 if (ioctl == KVM_SET_ONE_REG)
2060 r = kvm_vcpu_ioctl_set_one_reg(vcpu, ®);
2062 r = kvm_vcpu_ioctl_get_one_reg(vcpu, ®);
2066 #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC)
2067 case KVM_DIRTY_TLB: {
2068 struct kvm_dirty_tlb dirty;
2070 if (copy_from_user(&dirty, argp, sizeof(dirty)))
2073 r = kvm_vcpu_ioctl_dirty_tlb(vcpu, &dirty);
2086 vm_fault_t kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf)
2088 return VM_FAULT_SIGBUS;
2091 static int kvm_vm_ioctl_get_pvinfo(struct kvm_ppc_pvinfo *pvinfo)
2093 u32 inst_nop = 0x60000000;
2094 #ifdef CONFIG_KVM_BOOKE_HV
2095 u32 inst_sc1 = 0x44000022;
2096 pvinfo->hcall[0] = cpu_to_be32(inst_sc1);
2097 pvinfo->hcall[1] = cpu_to_be32(inst_nop);
2098 pvinfo->hcall[2] = cpu_to_be32(inst_nop);
2099 pvinfo->hcall[3] = cpu_to_be32(inst_nop);
2101 u32 inst_lis = 0x3c000000;
2102 u32 inst_ori = 0x60000000;
2103 u32 inst_sc = 0x44000002;
2104 u32 inst_imm_mask = 0xffff;
2107 * The hypercall to get into KVM from within guest context is as
2110 * lis r0, r0, KVM_SC_MAGIC_R0@h
2111 * ori r0, KVM_SC_MAGIC_R0@l
2115 pvinfo->hcall[0] = cpu_to_be32(inst_lis | ((KVM_SC_MAGIC_R0 >> 16) & inst_imm_mask));
2116 pvinfo->hcall[1] = cpu_to_be32(inst_ori | (KVM_SC_MAGIC_R0 & inst_imm_mask));
2117 pvinfo->hcall[2] = cpu_to_be32(inst_sc);
2118 pvinfo->hcall[3] = cpu_to_be32(inst_nop);
2121 pvinfo->flags = KVM_PPC_PVINFO_FLAGS_EV_IDLE;
2126 int kvm_vm_ioctl_irq_line(struct kvm *kvm, struct kvm_irq_level *irq_event,
2129 if (!irqchip_in_kernel(kvm))
2132 irq_event->status = kvm_set_irq(kvm, KVM_USERSPACE_IRQ_SOURCE_ID,
2133 irq_event->irq, irq_event->level,
2139 int kvm_vm_ioctl_enable_cap(struct kvm *kvm,
2140 struct kvm_enable_cap *cap)
2148 #ifdef CONFIG_KVM_BOOK3S_64_HANDLER
2149 case KVM_CAP_PPC_ENABLE_HCALL: {
2150 unsigned long hcall = cap->args[0];
2153 if (hcall > MAX_HCALL_OPCODE || (hcall & 3) ||
2156 if (!kvmppc_book3s_hcall_implemented(kvm, hcall))
2159 set_bit(hcall / 4, kvm->arch.enabled_hcalls);
2161 clear_bit(hcall / 4, kvm->arch.enabled_hcalls);
2165 case KVM_CAP_PPC_SMT: {
2166 unsigned long mode = cap->args[0];
2167 unsigned long flags = cap->args[1];
2170 if (kvm->arch.kvm_ops->set_smt_mode)
2171 r = kvm->arch.kvm_ops->set_smt_mode(kvm, mode, flags);
2175 case KVM_CAP_PPC_NESTED_HV:
2177 if (!is_kvmppc_hv_enabled(kvm) ||
2178 !kvm->arch.kvm_ops->enable_nested)
2180 r = kvm->arch.kvm_ops->enable_nested(kvm);
2183 #if defined(CONFIG_KVM_BOOK3S_HV_POSSIBLE)
2184 case KVM_CAP_PPC_SECURE_GUEST:
2186 if (!is_kvmppc_hv_enabled(kvm) || !kvm->arch.kvm_ops->enable_svm)
2188 r = kvm->arch.kvm_ops->enable_svm(kvm);
2199 #ifdef CONFIG_PPC_BOOK3S_64
2201 * These functions check whether the underlying hardware is safe
2202 * against attacks based on observing the effects of speculatively
2203 * executed instructions, and whether it supplies instructions for
2204 * use in workarounds. The information comes from firmware, either
2205 * via the device tree on powernv platforms or from an hcall on
2206 * pseries platforms.
2208 #ifdef CONFIG_PPC_PSERIES
2209 static int pseries_get_cpu_char(struct kvm_ppc_cpu_char *cp)
2211 struct h_cpu_char_result c;
2214 if (!machine_is(pseries))
2217 rc = plpar_get_cpu_characteristics(&c);
2218 if (rc == H_SUCCESS) {
2219 cp->character = c.character;
2220 cp->behaviour = c.behaviour;
2221 cp->character_mask = KVM_PPC_CPU_CHAR_SPEC_BAR_ORI31 |
2222 KVM_PPC_CPU_CHAR_BCCTRL_SERIALISED |
2223 KVM_PPC_CPU_CHAR_L1D_FLUSH_ORI30 |
2224 KVM_PPC_CPU_CHAR_L1D_FLUSH_TRIG2 |
2225 KVM_PPC_CPU_CHAR_L1D_THREAD_PRIV |
2226 KVM_PPC_CPU_CHAR_BR_HINT_HONOURED |
2227 KVM_PPC_CPU_CHAR_MTTRIG_THR_RECONF |
2228 KVM_PPC_CPU_CHAR_COUNT_CACHE_DIS |
2229 KVM_PPC_CPU_CHAR_BCCTR_FLUSH_ASSIST;
2230 cp->behaviour_mask = KVM_PPC_CPU_BEHAV_FAVOUR_SECURITY |
2231 KVM_PPC_CPU_BEHAV_L1D_FLUSH_PR |
2232 KVM_PPC_CPU_BEHAV_BNDS_CHK_SPEC_BAR |
2233 KVM_PPC_CPU_BEHAV_FLUSH_COUNT_CACHE;
2238 static int pseries_get_cpu_char(struct kvm_ppc_cpu_char *cp)
2244 static inline bool have_fw_feat(struct device_node *fw_features,
2245 const char *state, const char *name)
2247 struct device_node *np;
2250 np = of_get_child_by_name(fw_features, name);
2252 r = of_property_read_bool(np, state);
2258 static int kvmppc_get_cpu_char(struct kvm_ppc_cpu_char *cp)
2260 struct device_node *np, *fw_features;
2263 memset(cp, 0, sizeof(*cp));
2264 r = pseries_get_cpu_char(cp);
2268 np = of_find_node_by_name(NULL, "ibm,opal");
2270 fw_features = of_get_child_by_name(np, "fw-features");
2274 if (have_fw_feat(fw_features, "enabled",
2275 "inst-spec-barrier-ori31,31,0"))
2276 cp->character |= KVM_PPC_CPU_CHAR_SPEC_BAR_ORI31;
2277 if (have_fw_feat(fw_features, "enabled",
2278 "fw-bcctrl-serialized"))
2279 cp->character |= KVM_PPC_CPU_CHAR_BCCTRL_SERIALISED;
2280 if (have_fw_feat(fw_features, "enabled",
2281 "inst-l1d-flush-ori30,30,0"))
2282 cp->character |= KVM_PPC_CPU_CHAR_L1D_FLUSH_ORI30;
2283 if (have_fw_feat(fw_features, "enabled",
2284 "inst-l1d-flush-trig2"))
2285 cp->character |= KVM_PPC_CPU_CHAR_L1D_FLUSH_TRIG2;
2286 if (have_fw_feat(fw_features, "enabled",
2287 "fw-l1d-thread-split"))
2288 cp->character |= KVM_PPC_CPU_CHAR_L1D_THREAD_PRIV;
2289 if (have_fw_feat(fw_features, "enabled",
2290 "fw-count-cache-disabled"))
2291 cp->character |= KVM_PPC_CPU_CHAR_COUNT_CACHE_DIS;
2292 if (have_fw_feat(fw_features, "enabled",
2293 "fw-count-cache-flush-bcctr2,0,0"))
2294 cp->character |= KVM_PPC_CPU_CHAR_BCCTR_FLUSH_ASSIST;
2295 cp->character_mask = KVM_PPC_CPU_CHAR_SPEC_BAR_ORI31 |
2296 KVM_PPC_CPU_CHAR_BCCTRL_SERIALISED |
2297 KVM_PPC_CPU_CHAR_L1D_FLUSH_ORI30 |
2298 KVM_PPC_CPU_CHAR_L1D_FLUSH_TRIG2 |
2299 KVM_PPC_CPU_CHAR_L1D_THREAD_PRIV |
2300 KVM_PPC_CPU_CHAR_COUNT_CACHE_DIS |
2301 KVM_PPC_CPU_CHAR_BCCTR_FLUSH_ASSIST;
2303 if (have_fw_feat(fw_features, "enabled",
2304 "speculation-policy-favor-security"))
2305 cp->behaviour |= KVM_PPC_CPU_BEHAV_FAVOUR_SECURITY;
2306 if (!have_fw_feat(fw_features, "disabled",
2307 "needs-l1d-flush-msr-pr-0-to-1"))
2308 cp->behaviour |= KVM_PPC_CPU_BEHAV_L1D_FLUSH_PR;
2309 if (!have_fw_feat(fw_features, "disabled",
2310 "needs-spec-barrier-for-bound-checks"))
2311 cp->behaviour |= KVM_PPC_CPU_BEHAV_BNDS_CHK_SPEC_BAR;
2312 if (have_fw_feat(fw_features, "enabled",
2313 "needs-count-cache-flush-on-context-switch"))
2314 cp->behaviour |= KVM_PPC_CPU_BEHAV_FLUSH_COUNT_CACHE;
2315 cp->behaviour_mask = KVM_PPC_CPU_BEHAV_FAVOUR_SECURITY |
2316 KVM_PPC_CPU_BEHAV_L1D_FLUSH_PR |
2317 KVM_PPC_CPU_BEHAV_BNDS_CHK_SPEC_BAR |
2318 KVM_PPC_CPU_BEHAV_FLUSH_COUNT_CACHE;
2320 of_node_put(fw_features);
2327 long kvm_arch_vm_ioctl(struct file *filp,
2328 unsigned int ioctl, unsigned long arg)
2330 struct kvm *kvm __maybe_unused = filp->private_data;
2331 void __user *argp = (void __user *)arg;
2335 case KVM_PPC_GET_PVINFO: {
2336 struct kvm_ppc_pvinfo pvinfo;
2337 memset(&pvinfo, 0, sizeof(pvinfo));
2338 r = kvm_vm_ioctl_get_pvinfo(&pvinfo);
2339 if (copy_to_user(argp, &pvinfo, sizeof(pvinfo))) {
2346 #ifdef CONFIG_SPAPR_TCE_IOMMU
2347 case KVM_CREATE_SPAPR_TCE_64: {
2348 struct kvm_create_spapr_tce_64 create_tce_64;
2351 if (copy_from_user(&create_tce_64, argp, sizeof(create_tce_64)))
2353 if (create_tce_64.flags) {
2357 r = kvm_vm_ioctl_create_spapr_tce(kvm, &create_tce_64);
2360 case KVM_CREATE_SPAPR_TCE: {
2361 struct kvm_create_spapr_tce create_tce;
2362 struct kvm_create_spapr_tce_64 create_tce_64;
2365 if (copy_from_user(&create_tce, argp, sizeof(create_tce)))
2368 create_tce_64.liobn = create_tce.liobn;
2369 create_tce_64.page_shift = IOMMU_PAGE_SHIFT_4K;
2370 create_tce_64.offset = 0;
2371 create_tce_64.size = create_tce.window_size >>
2372 IOMMU_PAGE_SHIFT_4K;
2373 create_tce_64.flags = 0;
2374 r = kvm_vm_ioctl_create_spapr_tce(kvm, &create_tce_64);
2378 #ifdef CONFIG_PPC_BOOK3S_64
2379 case KVM_PPC_GET_SMMU_INFO: {
2380 struct kvm_ppc_smmu_info info;
2381 struct kvm *kvm = filp->private_data;
2383 memset(&info, 0, sizeof(info));
2384 r = kvm->arch.kvm_ops->get_smmu_info(kvm, &info);
2385 if (r >= 0 && copy_to_user(argp, &info, sizeof(info)))
2389 case KVM_PPC_RTAS_DEFINE_TOKEN: {
2390 struct kvm *kvm = filp->private_data;
2392 r = kvm_vm_ioctl_rtas_define_token(kvm, argp);
2395 case KVM_PPC_CONFIGURE_V3_MMU: {
2396 struct kvm *kvm = filp->private_data;
2397 struct kvm_ppc_mmuv3_cfg cfg;
2400 if (!kvm->arch.kvm_ops->configure_mmu)
2403 if (copy_from_user(&cfg, argp, sizeof(cfg)))
2405 r = kvm->arch.kvm_ops->configure_mmu(kvm, &cfg);
2408 case KVM_PPC_GET_RMMU_INFO: {
2409 struct kvm *kvm = filp->private_data;
2410 struct kvm_ppc_rmmu_info info;
2413 if (!kvm->arch.kvm_ops->get_rmmu_info)
2415 r = kvm->arch.kvm_ops->get_rmmu_info(kvm, &info);
2416 if (r >= 0 && copy_to_user(argp, &info, sizeof(info)))
2420 case KVM_PPC_GET_CPU_CHAR: {
2421 struct kvm_ppc_cpu_char cpuchar;
2423 r = kvmppc_get_cpu_char(&cpuchar);
2424 if (r >= 0 && copy_to_user(argp, &cpuchar, sizeof(cpuchar)))
2428 case KVM_PPC_SVM_OFF: {
2429 struct kvm *kvm = filp->private_data;
2432 if (!kvm->arch.kvm_ops->svm_off)
2435 r = kvm->arch.kvm_ops->svm_off(kvm);
2439 struct kvm *kvm = filp->private_data;
2440 r = kvm->arch.kvm_ops->arch_vm_ioctl(filp, ioctl, arg);
2442 #else /* CONFIG_PPC_BOOK3S_64 */
2451 static unsigned long lpid_inuse[BITS_TO_LONGS(KVMPPC_NR_LPIDS)];
2452 static unsigned long nr_lpids;
2454 long kvmppc_alloc_lpid(void)
2459 lpid = find_first_zero_bit(lpid_inuse, KVMPPC_NR_LPIDS);
2460 if (lpid >= nr_lpids) {
2461 pr_err("%s: No LPIDs free\n", __func__);
2464 } while (test_and_set_bit(lpid, lpid_inuse));
2468 EXPORT_SYMBOL_GPL(kvmppc_alloc_lpid);
2470 void kvmppc_claim_lpid(long lpid)
2472 set_bit(lpid, lpid_inuse);
2474 EXPORT_SYMBOL_GPL(kvmppc_claim_lpid);
2476 void kvmppc_free_lpid(long lpid)
2478 clear_bit(lpid, lpid_inuse);
2480 EXPORT_SYMBOL_GPL(kvmppc_free_lpid);
2482 void kvmppc_init_lpid(unsigned long nr_lpids_param)
2484 nr_lpids = min_t(unsigned long, KVMPPC_NR_LPIDS, nr_lpids_param);
2485 memset(lpid_inuse, 0, sizeof(lpid_inuse));
2487 EXPORT_SYMBOL_GPL(kvmppc_init_lpid);
2489 int kvm_arch_init(void *opaque)
2494 EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_ppc_instr);