2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License, version 2, as
4 * published by the Free Software Foundation.
6 * This program is distributed in the hope that it will be useful,
7 * but WITHOUT ANY WARRANTY; without even the implied warranty of
8 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
9 * GNU General Public License for more details.
11 * You should have received a copy of the GNU General Public License
12 * along with this program; if not, write to the Free Software
13 * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
15 * Copyright IBM Corp. 2007
17 * Authors: Hollis Blanchard <hollisb@us.ibm.com>
18 * Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
21 #include <linux/errno.h>
22 #include <linux/err.h>
23 #include <linux/kvm_host.h>
24 #include <linux/vmalloc.h>
25 #include <linux/hrtimer.h>
26 #include <linux/sched/signal.h>
28 #include <linux/slab.h>
29 #include <linux/file.h>
30 #include <linux/module.h>
31 #include <linux/irqbypass.h>
32 #include <linux/kvm_irqfd.h>
33 #include <asm/cputable.h>
34 #include <linux/uaccess.h>
35 #include <asm/kvm_ppc.h>
36 #include <asm/tlbflush.h>
37 #include <asm/cputhreads.h>
38 #include <asm/irqflags.h>
39 #include <asm/iommu.h>
40 #include <asm/switch_to.h>
45 #include "../mm/mmu_decl.h"
47 #define CREATE_TRACE_POINTS
50 struct kvmppc_ops *kvmppc_hv_ops;
51 EXPORT_SYMBOL_GPL(kvmppc_hv_ops);
52 struct kvmppc_ops *kvmppc_pr_ops;
53 EXPORT_SYMBOL_GPL(kvmppc_pr_ops);
56 int kvm_arch_vcpu_runnable(struct kvm_vcpu *v)
58 return !!(v->arch.pending_exceptions) ||
62 int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu)
68 * Common checks before entering the guest world. Call with interrupts
73 * == 1 if we're ready to go into guest state
74 * <= 0 if we need to go back to the host with return value
76 int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu)
80 WARN_ON(irqs_disabled());
91 if (signal_pending(current)) {
92 kvmppc_account_exit(vcpu, SIGNAL_EXITS);
93 vcpu->run->exit_reason = KVM_EXIT_INTR;
98 vcpu->mode = IN_GUEST_MODE;
101 * Reading vcpu->requests must happen after setting vcpu->mode,
102 * so we don't miss a request because the requester sees
103 * OUTSIDE_GUEST_MODE and assumes we'll be checking requests
104 * before next entering the guest (and thus doesn't IPI).
105 * This also orders the write to mode from any reads
106 * to the page tables done while the VCPU is running.
107 * Please see the comment in kvm_flush_remote_tlbs.
111 if (vcpu->requests) {
112 /* Make sure we process requests preemptable */
114 trace_kvm_check_requests(vcpu);
115 r = kvmppc_core_check_requests(vcpu);
122 if (kvmppc_core_prepare_to_enter(vcpu)) {
123 /* interrupts got enabled in between, so we
124 are back at square 1 */
128 guest_enter_irqoff();
136 EXPORT_SYMBOL_GPL(kvmppc_prepare_to_enter);
138 #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE)
139 static void kvmppc_swab_shared(struct kvm_vcpu *vcpu)
141 struct kvm_vcpu_arch_shared *shared = vcpu->arch.shared;
144 shared->sprg0 = swab64(shared->sprg0);
145 shared->sprg1 = swab64(shared->sprg1);
146 shared->sprg2 = swab64(shared->sprg2);
147 shared->sprg3 = swab64(shared->sprg3);
148 shared->srr0 = swab64(shared->srr0);
149 shared->srr1 = swab64(shared->srr1);
150 shared->dar = swab64(shared->dar);
151 shared->msr = swab64(shared->msr);
152 shared->dsisr = swab32(shared->dsisr);
153 shared->int_pending = swab32(shared->int_pending);
154 for (i = 0; i < ARRAY_SIZE(shared->sr); i++)
155 shared->sr[i] = swab32(shared->sr[i]);
159 int kvmppc_kvm_pv(struct kvm_vcpu *vcpu)
161 int nr = kvmppc_get_gpr(vcpu, 11);
163 unsigned long __maybe_unused param1 = kvmppc_get_gpr(vcpu, 3);
164 unsigned long __maybe_unused param2 = kvmppc_get_gpr(vcpu, 4);
165 unsigned long __maybe_unused param3 = kvmppc_get_gpr(vcpu, 5);
166 unsigned long __maybe_unused param4 = kvmppc_get_gpr(vcpu, 6);
167 unsigned long r2 = 0;
169 if (!(kvmppc_get_msr(vcpu) & MSR_SF)) {
171 param1 &= 0xffffffff;
172 param2 &= 0xffffffff;
173 param3 &= 0xffffffff;
174 param4 &= 0xffffffff;
178 case KVM_HCALL_TOKEN(KVM_HC_PPC_MAP_MAGIC_PAGE):
180 #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE)
181 /* Book3S can be little endian, find it out here */
182 int shared_big_endian = true;
183 if (vcpu->arch.intr_msr & MSR_LE)
184 shared_big_endian = false;
185 if (shared_big_endian != vcpu->arch.shared_big_endian)
186 kvmppc_swab_shared(vcpu);
187 vcpu->arch.shared_big_endian = shared_big_endian;
190 if (!(param2 & MAGIC_PAGE_FLAG_NOT_MAPPED_NX)) {
192 * Older versions of the Linux magic page code had
193 * a bug where they would map their trampoline code
194 * NX. If that's the case, remove !PR NX capability.
196 vcpu->arch.disable_kernel_nx = true;
197 kvm_make_request(KVM_REQ_TLB_FLUSH, vcpu);
200 vcpu->arch.magic_page_pa = param1 & ~0xfffULL;
201 vcpu->arch.magic_page_ea = param2 & ~0xfffULL;
203 #ifdef CONFIG_PPC_64K_PAGES
205 * Make sure our 4k magic page is in the same window of a 64k
206 * page within the guest and within the host's page.
208 if ((vcpu->arch.magic_page_pa & 0xf000) !=
209 ((ulong)vcpu->arch.shared & 0xf000)) {
210 void *old_shared = vcpu->arch.shared;
211 ulong shared = (ulong)vcpu->arch.shared;
215 shared |= vcpu->arch.magic_page_pa & 0xf000;
216 new_shared = (void*)shared;
217 memcpy(new_shared, old_shared, 0x1000);
218 vcpu->arch.shared = new_shared;
222 r2 = KVM_MAGIC_FEAT_SR | KVM_MAGIC_FEAT_MAS0_TO_SPRG7;
227 case KVM_HCALL_TOKEN(KVM_HC_FEATURES):
229 #if defined(CONFIG_PPC_BOOK3S) || defined(CONFIG_KVM_E500V2)
230 r2 |= (1 << KVM_FEATURE_MAGIC_PAGE);
233 /* Second return value is in r4 */
235 case EV_HCALL_TOKEN(EV_IDLE):
237 kvm_vcpu_block(vcpu);
238 kvm_clear_request(KVM_REQ_UNHALT, vcpu);
241 r = EV_UNIMPLEMENTED;
245 kvmppc_set_gpr(vcpu, 4, r2);
249 EXPORT_SYMBOL_GPL(kvmppc_kvm_pv);
251 int kvmppc_sanity_check(struct kvm_vcpu *vcpu)
255 /* We have to know what CPU to virtualize */
259 /* PAPR only works with book3s_64 */
260 if ((vcpu->arch.cpu_type != KVM_CPU_3S_64) && vcpu->arch.papr_enabled)
263 /* HV KVM can only do PAPR mode for now */
264 if (!vcpu->arch.papr_enabled && is_kvmppc_hv_enabled(vcpu->kvm))
267 #ifdef CONFIG_KVM_BOOKE_HV
268 if (!cpu_has_feature(CPU_FTR_EMB_HV))
276 return r ? 0 : -EINVAL;
278 EXPORT_SYMBOL_GPL(kvmppc_sanity_check);
280 int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu)
282 enum emulation_result er;
285 er = kvmppc_emulate_loadstore(vcpu);
288 /* Future optimization: only reload non-volatiles if they were
289 * actually modified. */
295 case EMULATE_DO_MMIO:
296 run->exit_reason = KVM_EXIT_MMIO;
297 /* We must reload nonvolatiles because "update" load/store
298 * instructions modify register state. */
299 /* Future optimization: only reload non-volatiles if they were
300 * actually modified. */
307 kvmppc_get_last_inst(vcpu, INST_GENERIC, &last_inst);
308 /* XXX Deliver Program interrupt to guest. */
309 pr_emerg("%s: emulation failed (%08x)\n", __func__, last_inst);
320 EXPORT_SYMBOL_GPL(kvmppc_emulate_mmio);
322 int kvmppc_st(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr,
325 ulong mp_pa = vcpu->arch.magic_page_pa & KVM_PAM & PAGE_MASK;
326 struct kvmppc_pte pte;
331 r = kvmppc_xlate(vcpu, *eaddr, data ? XLATE_DATA : XLATE_INST,
341 /* Magic page override */
342 if (kvmppc_supports_magic_page(vcpu) && mp_pa &&
343 ((pte.raddr & KVM_PAM & PAGE_MASK) == mp_pa) &&
344 !(kvmppc_get_msr(vcpu) & MSR_PR)) {
345 void *magic = vcpu->arch.shared;
346 magic += pte.eaddr & 0xfff;
347 memcpy(magic, ptr, size);
351 if (kvm_write_guest(vcpu->kvm, pte.raddr, ptr, size))
352 return EMULATE_DO_MMIO;
356 EXPORT_SYMBOL_GPL(kvmppc_st);
358 int kvmppc_ld(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr,
361 ulong mp_pa = vcpu->arch.magic_page_pa & KVM_PAM & PAGE_MASK;
362 struct kvmppc_pte pte;
367 rc = kvmppc_xlate(vcpu, *eaddr, data ? XLATE_DATA : XLATE_INST,
377 if (!data && !pte.may_execute)
380 /* Magic page override */
381 if (kvmppc_supports_magic_page(vcpu) && mp_pa &&
382 ((pte.raddr & KVM_PAM & PAGE_MASK) == mp_pa) &&
383 !(kvmppc_get_msr(vcpu) & MSR_PR)) {
384 void *magic = vcpu->arch.shared;
385 magic += pte.eaddr & 0xfff;
386 memcpy(ptr, magic, size);
390 if (kvm_read_guest(vcpu->kvm, pte.raddr, ptr, size))
391 return EMULATE_DO_MMIO;
395 EXPORT_SYMBOL_GPL(kvmppc_ld);
397 int kvm_arch_hardware_enable(void)
402 int kvm_arch_hardware_setup(void)
407 void kvm_arch_check_processor_compat(void *rtn)
409 *(int *)rtn = kvmppc_core_check_processor_compat();
412 int kvm_arch_init_vm(struct kvm *kvm, unsigned long type)
414 struct kvmppc_ops *kvm_ops = NULL;
416 * if we have both HV and PR enabled, default is HV
420 kvm_ops = kvmppc_hv_ops;
422 kvm_ops = kvmppc_pr_ops;
425 } else if (type == KVM_VM_PPC_HV) {
428 kvm_ops = kvmppc_hv_ops;
429 } else if (type == KVM_VM_PPC_PR) {
432 kvm_ops = kvmppc_pr_ops;
436 if (kvm_ops->owner && !try_module_get(kvm_ops->owner))
439 kvm->arch.kvm_ops = kvm_ops;
440 return kvmppc_core_init_vm(kvm);
445 bool kvm_arch_has_vcpu_debugfs(void)
450 int kvm_arch_create_vcpu_debugfs(struct kvm_vcpu *vcpu)
455 void kvm_arch_destroy_vm(struct kvm *kvm)
458 struct kvm_vcpu *vcpu;
460 #ifdef CONFIG_KVM_XICS
462 * We call kick_all_cpus_sync() to ensure that all
463 * CPUs have executed any pending IPIs before we
464 * continue and free VCPUs structures below.
466 if (is_kvmppc_hv_enabled(kvm))
467 kick_all_cpus_sync();
470 kvm_for_each_vcpu(i, vcpu, kvm)
471 kvm_arch_vcpu_free(vcpu);
473 mutex_lock(&kvm->lock);
474 for (i = 0; i < atomic_read(&kvm->online_vcpus); i++)
475 kvm->vcpus[i] = NULL;
477 atomic_set(&kvm->online_vcpus, 0);
479 kvmppc_core_destroy_vm(kvm);
481 mutex_unlock(&kvm->lock);
483 /* drop the module reference */
484 module_put(kvm->arch.kvm_ops->owner);
487 int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext)
490 /* Assume we're using HV mode when the HV module is loaded */
491 int hv_enabled = kvmppc_hv_ops ? 1 : 0;
495 * Hooray - we know which VM type we're running on. Depend on
496 * that rather than the guess above.
498 hv_enabled = is_kvmppc_hv_enabled(kvm);
503 case KVM_CAP_PPC_BOOKE_SREGS:
504 case KVM_CAP_PPC_BOOKE_WATCHDOG:
505 case KVM_CAP_PPC_EPR:
507 case KVM_CAP_PPC_SEGSTATE:
508 case KVM_CAP_PPC_HIOR:
509 case KVM_CAP_PPC_PAPR:
511 case KVM_CAP_PPC_UNSET_IRQ:
512 case KVM_CAP_PPC_IRQ_LEVEL:
513 case KVM_CAP_ENABLE_CAP:
514 case KVM_CAP_ENABLE_CAP_VM:
515 case KVM_CAP_ONE_REG:
516 case KVM_CAP_IOEVENTFD:
517 case KVM_CAP_DEVICE_CTRL:
518 case KVM_CAP_IMMEDIATE_EXIT:
521 case KVM_CAP_PPC_PAIRED_SINGLES:
522 case KVM_CAP_PPC_OSI:
523 case KVM_CAP_PPC_GET_PVINFO:
524 #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC)
527 /* We support this only for PR */
530 #ifdef CONFIG_KVM_MPIC
531 case KVM_CAP_IRQ_MPIC:
536 #ifdef CONFIG_PPC_BOOK3S_64
537 case KVM_CAP_SPAPR_TCE:
538 case KVM_CAP_SPAPR_TCE_64:
540 case KVM_CAP_SPAPR_TCE_VFIO:
541 case KVM_CAP_PPC_RTAS:
542 case KVM_CAP_PPC_FIXUP_HCALL:
543 case KVM_CAP_PPC_ENABLE_HCALL:
544 #ifdef CONFIG_KVM_XICS
545 case KVM_CAP_IRQ_XICS:
550 case KVM_CAP_PPC_ALLOC_HTAB:
553 #endif /* CONFIG_PPC_BOOK3S_64 */
554 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
555 case KVM_CAP_PPC_SMT:
558 if (cpu_has_feature(CPU_FTR_ARCH_300))
561 r = threads_per_subcore;
564 case KVM_CAP_PPC_RMA:
567 case KVM_CAP_PPC_HWRNG:
568 r = kvmppc_hwrng_present();
570 case KVM_CAP_PPC_MMU_RADIX:
571 r = !!(hv_enabled && radix_enabled());
573 case KVM_CAP_PPC_MMU_HASH_V3:
574 r = !!(hv_enabled && !radix_enabled() &&
575 cpu_has_feature(CPU_FTR_ARCH_300));
578 case KVM_CAP_SYNC_MMU:
579 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
581 #elif defined(KVM_ARCH_WANT_MMU_NOTIFIER)
587 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
588 case KVM_CAP_PPC_HTAB_FD:
592 case KVM_CAP_NR_VCPUS:
594 * Recommending a number of CPUs is somewhat arbitrary; we
595 * return the number of present CPUs for -HV (since a host
596 * will have secondary threads "offline"), and for other KVM
597 * implementations just count online CPUs.
600 r = num_present_cpus();
602 r = num_online_cpus();
604 case KVM_CAP_NR_MEMSLOTS:
605 r = KVM_USER_MEM_SLOTS;
607 case KVM_CAP_MAX_VCPUS:
610 #ifdef CONFIG_PPC_BOOK3S_64
611 case KVM_CAP_PPC_GET_SMMU_INFO:
614 case KVM_CAP_SPAPR_MULTITCE:
617 case KVM_CAP_SPAPR_RESIZE_HPT:
618 /* Disable this on POWER9 until code handles new HPTE format */
619 r = !!hv_enabled && !cpu_has_feature(CPU_FTR_ARCH_300);
622 case KVM_CAP_PPC_HTM:
623 r = cpu_has_feature(CPU_FTR_TM_COMP) &&
624 is_kvmppc_hv_enabled(kvm);
634 long kvm_arch_dev_ioctl(struct file *filp,
635 unsigned int ioctl, unsigned long arg)
640 void kvm_arch_free_memslot(struct kvm *kvm, struct kvm_memory_slot *free,
641 struct kvm_memory_slot *dont)
643 kvmppc_core_free_memslot(kvm, free, dont);
646 int kvm_arch_create_memslot(struct kvm *kvm, struct kvm_memory_slot *slot,
647 unsigned long npages)
649 return kvmppc_core_create_memslot(kvm, slot, npages);
652 int kvm_arch_prepare_memory_region(struct kvm *kvm,
653 struct kvm_memory_slot *memslot,
654 const struct kvm_userspace_memory_region *mem,
655 enum kvm_mr_change change)
657 return kvmppc_core_prepare_memory_region(kvm, memslot, mem);
660 void kvm_arch_commit_memory_region(struct kvm *kvm,
661 const struct kvm_userspace_memory_region *mem,
662 const struct kvm_memory_slot *old,
663 const struct kvm_memory_slot *new,
664 enum kvm_mr_change change)
666 kvmppc_core_commit_memory_region(kvm, mem, old, new);
669 void kvm_arch_flush_shadow_memslot(struct kvm *kvm,
670 struct kvm_memory_slot *slot)
672 kvmppc_core_flush_memslot(kvm, slot);
675 struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id)
677 struct kvm_vcpu *vcpu;
678 vcpu = kvmppc_core_vcpu_create(kvm, id);
680 vcpu->arch.wqp = &vcpu->wq;
681 kvmppc_create_vcpu_debugfs(vcpu, id);
686 void kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu)
690 void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu)
692 /* Make sure we're not using the vcpu anymore */
693 hrtimer_cancel(&vcpu->arch.dec_timer);
695 kvmppc_remove_vcpu_debugfs(vcpu);
697 switch (vcpu->arch.irq_type) {
698 case KVMPPC_IRQ_MPIC:
699 kvmppc_mpic_disconnect_vcpu(vcpu->arch.mpic, vcpu);
701 case KVMPPC_IRQ_XICS:
703 kvmppc_xive_cleanup_vcpu(vcpu);
705 kvmppc_xics_free_icp(vcpu);
709 kvmppc_core_vcpu_free(vcpu);
712 void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu)
714 kvm_arch_vcpu_free(vcpu);
717 int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu)
719 return kvmppc_core_pending_dec(vcpu);
722 static enum hrtimer_restart kvmppc_decrementer_wakeup(struct hrtimer *timer)
724 struct kvm_vcpu *vcpu;
726 vcpu = container_of(timer, struct kvm_vcpu, arch.dec_timer);
727 kvmppc_decrementer_func(vcpu);
729 return HRTIMER_NORESTART;
732 int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu)
736 hrtimer_init(&vcpu->arch.dec_timer, CLOCK_REALTIME, HRTIMER_MODE_ABS);
737 vcpu->arch.dec_timer.function = kvmppc_decrementer_wakeup;
738 vcpu->arch.dec_expires = ~(u64)0;
740 #ifdef CONFIG_KVM_EXIT_TIMING
741 mutex_init(&vcpu->arch.exit_timing_lock);
743 ret = kvmppc_subarch_vcpu_init(vcpu);
747 void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu)
749 kvmppc_mmu_destroy(vcpu);
750 kvmppc_subarch_vcpu_uninit(vcpu);
753 void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
757 * vrsave (formerly usprg0) isn't used by Linux, but may
758 * be used by the guest.
760 * On non-booke this is associated with Altivec and
761 * is handled by code in book3s.c.
763 mtspr(SPRN_VRSAVE, vcpu->arch.vrsave);
765 kvmppc_core_vcpu_load(vcpu, cpu);
768 void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu)
770 kvmppc_core_vcpu_put(vcpu);
772 vcpu->arch.vrsave = mfspr(SPRN_VRSAVE);
777 * irq_bypass_add_producer and irq_bypass_del_producer are only
778 * useful if the architecture supports PCI passthrough.
779 * irq_bypass_stop and irq_bypass_start are not needed and so
780 * kvm_ops are not defined for them.
782 bool kvm_arch_has_irq_bypass(void)
784 return ((kvmppc_hv_ops && kvmppc_hv_ops->irq_bypass_add_producer) ||
785 (kvmppc_pr_ops && kvmppc_pr_ops->irq_bypass_add_producer));
788 int kvm_arch_irq_bypass_add_producer(struct irq_bypass_consumer *cons,
789 struct irq_bypass_producer *prod)
791 struct kvm_kernel_irqfd *irqfd =
792 container_of(cons, struct kvm_kernel_irqfd, consumer);
793 struct kvm *kvm = irqfd->kvm;
795 if (kvm->arch.kvm_ops->irq_bypass_add_producer)
796 return kvm->arch.kvm_ops->irq_bypass_add_producer(cons, prod);
801 void kvm_arch_irq_bypass_del_producer(struct irq_bypass_consumer *cons,
802 struct irq_bypass_producer *prod)
804 struct kvm_kernel_irqfd *irqfd =
805 container_of(cons, struct kvm_kernel_irqfd, consumer);
806 struct kvm *kvm = irqfd->kvm;
808 if (kvm->arch.kvm_ops->irq_bypass_del_producer)
809 kvm->arch.kvm_ops->irq_bypass_del_producer(cons, prod);
813 static inline int kvmppc_get_vsr_dword_offset(int index)
817 if ((index != 0) && (index != 1))
829 static inline int kvmppc_get_vsr_word_offset(int index)
833 if ((index > 3) || (index < 0))
844 static inline void kvmppc_set_vsr_dword(struct kvm_vcpu *vcpu,
847 union kvmppc_one_reg val;
848 int offset = kvmppc_get_vsr_dword_offset(vcpu->arch.mmio_vsx_offset);
849 int index = vcpu->arch.io_gpr & KVM_MMIO_REG_MASK;
854 if (vcpu->arch.mmio_vsx_tx_sx_enabled) {
855 val.vval = VCPU_VSX_VR(vcpu, index);
856 val.vsxval[offset] = gpr;
857 VCPU_VSX_VR(vcpu, index) = val.vval;
859 VCPU_VSX_FPR(vcpu, index, offset) = gpr;
863 static inline void kvmppc_set_vsr_dword_dump(struct kvm_vcpu *vcpu,
866 union kvmppc_one_reg val;
867 int index = vcpu->arch.io_gpr & KVM_MMIO_REG_MASK;
869 if (vcpu->arch.mmio_vsx_tx_sx_enabled) {
870 val.vval = VCPU_VSX_VR(vcpu, index);
873 VCPU_VSX_VR(vcpu, index) = val.vval;
875 VCPU_VSX_FPR(vcpu, index, 0) = gpr;
876 VCPU_VSX_FPR(vcpu, index, 1) = gpr;
880 static inline void kvmppc_set_vsr_word(struct kvm_vcpu *vcpu,
883 union kvmppc_one_reg val;
884 int offset = kvmppc_get_vsr_word_offset(vcpu->arch.mmio_vsx_offset);
885 int index = vcpu->arch.io_gpr & KVM_MMIO_REG_MASK;
886 int dword_offset, word_offset;
891 if (vcpu->arch.mmio_vsx_tx_sx_enabled) {
892 val.vval = VCPU_VSX_VR(vcpu, index);
893 val.vsx32val[offset] = gpr32;
894 VCPU_VSX_VR(vcpu, index) = val.vval;
896 dword_offset = offset / 2;
897 word_offset = offset % 2;
898 val.vsxval[0] = VCPU_VSX_FPR(vcpu, index, dword_offset);
899 val.vsx32val[word_offset] = gpr32;
900 VCPU_VSX_FPR(vcpu, index, dword_offset) = val.vsxval[0];
903 #endif /* CONFIG_VSX */
905 #ifdef CONFIG_PPC_FPU
906 static inline u64 sp_to_dp(u32 fprs)
912 asm ("lfs%U1%X1 0,%1; stfd%U0%X0 0,%0" : "=m" (fprd) : "m" (fprs)
918 static inline u32 dp_to_sp(u64 fprd)
924 asm ("lfd%U1%X1 0,%1; stfs%U0%X0 0,%0" : "=m" (fprs) : "m" (fprd)
931 #define sp_to_dp(x) (x)
932 #define dp_to_sp(x) (x)
933 #endif /* CONFIG_PPC_FPU */
935 static void kvmppc_complete_mmio_load(struct kvm_vcpu *vcpu,
938 u64 uninitialized_var(gpr);
940 if (run->mmio.len > sizeof(gpr)) {
941 printk(KERN_ERR "bad MMIO length: %d\n", run->mmio.len);
945 if (!vcpu->arch.mmio_host_swabbed) {
946 switch (run->mmio.len) {
947 case 8: gpr = *(u64 *)run->mmio.data; break;
948 case 4: gpr = *(u32 *)run->mmio.data; break;
949 case 2: gpr = *(u16 *)run->mmio.data; break;
950 case 1: gpr = *(u8 *)run->mmio.data; break;
953 switch (run->mmio.len) {
954 case 8: gpr = swab64(*(u64 *)run->mmio.data); break;
955 case 4: gpr = swab32(*(u32 *)run->mmio.data); break;
956 case 2: gpr = swab16(*(u16 *)run->mmio.data); break;
957 case 1: gpr = *(u8 *)run->mmio.data; break;
961 /* conversion between single and double precision */
962 if ((vcpu->arch.mmio_sp64_extend) && (run->mmio.len == 4))
965 if (vcpu->arch.mmio_sign_extend) {
966 switch (run->mmio.len) {
981 switch (vcpu->arch.io_gpr & KVM_MMIO_REG_EXT_MASK) {
982 case KVM_MMIO_REG_GPR:
983 kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, gpr);
985 case KVM_MMIO_REG_FPR:
986 VCPU_FPR(vcpu, vcpu->arch.io_gpr & KVM_MMIO_REG_MASK) = gpr;
988 #ifdef CONFIG_PPC_BOOK3S
989 case KVM_MMIO_REG_QPR:
990 vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr;
992 case KVM_MMIO_REG_FQPR:
993 VCPU_FPR(vcpu, vcpu->arch.io_gpr & KVM_MMIO_REG_MASK) = gpr;
994 vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr;
998 case KVM_MMIO_REG_VSX:
999 if (vcpu->arch.mmio_vsx_copy_type == KVMPPC_VSX_COPY_DWORD)
1000 kvmppc_set_vsr_dword(vcpu, gpr);
1001 else if (vcpu->arch.mmio_vsx_copy_type == KVMPPC_VSX_COPY_WORD)
1002 kvmppc_set_vsr_word(vcpu, gpr);
1003 else if (vcpu->arch.mmio_vsx_copy_type ==
1004 KVMPPC_VSX_COPY_DWORD_LOAD_DUMP)
1005 kvmppc_set_vsr_dword_dump(vcpu, gpr);
1013 static int __kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
1014 unsigned int rt, unsigned int bytes,
1015 int is_default_endian, int sign_extend)
1020 /* Pity C doesn't have a logical XOR operator */
1021 if (kvmppc_need_byteswap(vcpu)) {
1022 host_swabbed = is_default_endian;
1024 host_swabbed = !is_default_endian;
1027 if (bytes > sizeof(run->mmio.data)) {
1028 printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__,
1032 run->mmio.phys_addr = vcpu->arch.paddr_accessed;
1033 run->mmio.len = bytes;
1034 run->mmio.is_write = 0;
1036 vcpu->arch.io_gpr = rt;
1037 vcpu->arch.mmio_host_swabbed = host_swabbed;
1038 vcpu->mmio_needed = 1;
1039 vcpu->mmio_is_write = 0;
1040 vcpu->arch.mmio_sign_extend = sign_extend;
1042 idx = srcu_read_lock(&vcpu->kvm->srcu);
1044 ret = kvm_io_bus_read(vcpu, KVM_MMIO_BUS, run->mmio.phys_addr,
1045 bytes, &run->mmio.data);
1047 srcu_read_unlock(&vcpu->kvm->srcu, idx);
1050 kvmppc_complete_mmio_load(vcpu, run);
1051 vcpu->mmio_needed = 0;
1052 return EMULATE_DONE;
1055 return EMULATE_DO_MMIO;
1058 int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
1059 unsigned int rt, unsigned int bytes,
1060 int is_default_endian)
1062 return __kvmppc_handle_load(run, vcpu, rt, bytes, is_default_endian, 0);
1064 EXPORT_SYMBOL_GPL(kvmppc_handle_load);
1066 /* Same as above, but sign extends */
1067 int kvmppc_handle_loads(struct kvm_run *run, struct kvm_vcpu *vcpu,
1068 unsigned int rt, unsigned int bytes,
1069 int is_default_endian)
1071 return __kvmppc_handle_load(run, vcpu, rt, bytes, is_default_endian, 1);
1075 int kvmppc_handle_vsx_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
1076 unsigned int rt, unsigned int bytes,
1077 int is_default_endian, int mmio_sign_extend)
1079 enum emulation_result emulated = EMULATE_DONE;
1081 /* Currently, mmio_vsx_copy_nums only allowed to be less than 4 */
1082 if ( (vcpu->arch.mmio_vsx_copy_nums > 4) ||
1083 (vcpu->arch.mmio_vsx_copy_nums < 0) ) {
1084 return EMULATE_FAIL;
1087 while (vcpu->arch.mmio_vsx_copy_nums) {
1088 emulated = __kvmppc_handle_load(run, vcpu, rt, bytes,
1089 is_default_endian, mmio_sign_extend);
1091 if (emulated != EMULATE_DONE)
1094 vcpu->arch.paddr_accessed += run->mmio.len;
1096 vcpu->arch.mmio_vsx_copy_nums--;
1097 vcpu->arch.mmio_vsx_offset++;
1101 #endif /* CONFIG_VSX */
1103 int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
1104 u64 val, unsigned int bytes, int is_default_endian)
1106 void *data = run->mmio.data;
1110 /* Pity C doesn't have a logical XOR operator */
1111 if (kvmppc_need_byteswap(vcpu)) {
1112 host_swabbed = is_default_endian;
1114 host_swabbed = !is_default_endian;
1117 if (bytes > sizeof(run->mmio.data)) {
1118 printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__,
1122 run->mmio.phys_addr = vcpu->arch.paddr_accessed;
1123 run->mmio.len = bytes;
1124 run->mmio.is_write = 1;
1125 vcpu->mmio_needed = 1;
1126 vcpu->mmio_is_write = 1;
1128 if ((vcpu->arch.mmio_sp64_extend) && (bytes == 4))
1129 val = dp_to_sp(val);
1131 /* Store the value at the lowest bytes in 'data'. */
1132 if (!host_swabbed) {
1134 case 8: *(u64 *)data = val; break;
1135 case 4: *(u32 *)data = val; break;
1136 case 2: *(u16 *)data = val; break;
1137 case 1: *(u8 *)data = val; break;
1141 case 8: *(u64 *)data = swab64(val); break;
1142 case 4: *(u32 *)data = swab32(val); break;
1143 case 2: *(u16 *)data = swab16(val); break;
1144 case 1: *(u8 *)data = val; break;
1148 idx = srcu_read_lock(&vcpu->kvm->srcu);
1150 ret = kvm_io_bus_write(vcpu, KVM_MMIO_BUS, run->mmio.phys_addr,
1151 bytes, &run->mmio.data);
1153 srcu_read_unlock(&vcpu->kvm->srcu, idx);
1156 vcpu->mmio_needed = 0;
1157 return EMULATE_DONE;
1160 return EMULATE_DO_MMIO;
1162 EXPORT_SYMBOL_GPL(kvmppc_handle_store);
1165 static inline int kvmppc_get_vsr_data(struct kvm_vcpu *vcpu, int rs, u64 *val)
1167 u32 dword_offset, word_offset;
1168 union kvmppc_one_reg reg;
1170 int copy_type = vcpu->arch.mmio_vsx_copy_type;
1173 switch (copy_type) {
1174 case KVMPPC_VSX_COPY_DWORD:
1176 kvmppc_get_vsr_dword_offset(vcpu->arch.mmio_vsx_offset);
1178 if (vsx_offset == -1) {
1183 if (!vcpu->arch.mmio_vsx_tx_sx_enabled) {
1184 *val = VCPU_VSX_FPR(vcpu, rs, vsx_offset);
1186 reg.vval = VCPU_VSX_VR(vcpu, rs);
1187 *val = reg.vsxval[vsx_offset];
1191 case KVMPPC_VSX_COPY_WORD:
1193 kvmppc_get_vsr_word_offset(vcpu->arch.mmio_vsx_offset);
1195 if (vsx_offset == -1) {
1200 if (!vcpu->arch.mmio_vsx_tx_sx_enabled) {
1201 dword_offset = vsx_offset / 2;
1202 word_offset = vsx_offset % 2;
1203 reg.vsxval[0] = VCPU_VSX_FPR(vcpu, rs, dword_offset);
1204 *val = reg.vsx32val[word_offset];
1206 reg.vval = VCPU_VSX_VR(vcpu, rs);
1207 *val = reg.vsx32val[vsx_offset];
1219 int kvmppc_handle_vsx_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
1220 int rs, unsigned int bytes, int is_default_endian)
1223 enum emulation_result emulated = EMULATE_DONE;
1225 vcpu->arch.io_gpr = rs;
1227 /* Currently, mmio_vsx_copy_nums only allowed to be less than 4 */
1228 if ( (vcpu->arch.mmio_vsx_copy_nums > 4) ||
1229 (vcpu->arch.mmio_vsx_copy_nums < 0) ) {
1230 return EMULATE_FAIL;
1233 while (vcpu->arch.mmio_vsx_copy_nums) {
1234 if (kvmppc_get_vsr_data(vcpu, rs, &val) == -1)
1235 return EMULATE_FAIL;
1237 emulated = kvmppc_handle_store(run, vcpu,
1238 val, bytes, is_default_endian);
1240 if (emulated != EMULATE_DONE)
1243 vcpu->arch.paddr_accessed += run->mmio.len;
1245 vcpu->arch.mmio_vsx_copy_nums--;
1246 vcpu->arch.mmio_vsx_offset++;
1252 static int kvmppc_emulate_mmio_vsx_loadstore(struct kvm_vcpu *vcpu,
1253 struct kvm_run *run)
1255 enum emulation_result emulated = EMULATE_FAIL;
1258 vcpu->arch.paddr_accessed += run->mmio.len;
1260 if (!vcpu->mmio_is_write) {
1261 emulated = kvmppc_handle_vsx_load(run, vcpu, vcpu->arch.io_gpr,
1262 run->mmio.len, 1, vcpu->arch.mmio_sign_extend);
1264 emulated = kvmppc_handle_vsx_store(run, vcpu,
1265 vcpu->arch.io_gpr, run->mmio.len, 1);
1269 case EMULATE_DO_MMIO:
1270 run->exit_reason = KVM_EXIT_MMIO;
1274 pr_info("KVM: MMIO emulation failed (VSX repeat)\n");
1275 run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
1276 run->internal.suberror = KVM_INTERNAL_ERROR_EMULATION;
1285 #endif /* CONFIG_VSX */
1287 int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg)
1290 union kvmppc_one_reg val;
1293 size = one_reg_size(reg->id);
1294 if (size > sizeof(val))
1297 r = kvmppc_get_one_reg(vcpu, reg->id, &val);
1301 #ifdef CONFIG_ALTIVEC
1302 case KVM_REG_PPC_VR0 ... KVM_REG_PPC_VR31:
1303 if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
1307 val.vval = vcpu->arch.vr.vr[reg->id - KVM_REG_PPC_VR0];
1309 case KVM_REG_PPC_VSCR:
1310 if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
1314 val = get_reg_val(reg->id, vcpu->arch.vr.vscr.u[3]);
1316 case KVM_REG_PPC_VRSAVE:
1317 val = get_reg_val(reg->id, vcpu->arch.vrsave);
1319 #endif /* CONFIG_ALTIVEC */
1329 if (copy_to_user((char __user *)(unsigned long)reg->addr, &val, size))
1335 int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg)
1338 union kvmppc_one_reg val;
1341 size = one_reg_size(reg->id);
1342 if (size > sizeof(val))
1345 if (copy_from_user(&val, (char __user *)(unsigned long)reg->addr, size))
1348 r = kvmppc_set_one_reg(vcpu, reg->id, &val);
1352 #ifdef CONFIG_ALTIVEC
1353 case KVM_REG_PPC_VR0 ... KVM_REG_PPC_VR31:
1354 if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
1358 vcpu->arch.vr.vr[reg->id - KVM_REG_PPC_VR0] = val.vval;
1360 case KVM_REG_PPC_VSCR:
1361 if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
1365 vcpu->arch.vr.vscr.u[3] = set_reg_val(reg->id, val);
1367 case KVM_REG_PPC_VRSAVE:
1368 if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
1372 vcpu->arch.vrsave = set_reg_val(reg->id, val);
1374 #endif /* CONFIG_ALTIVEC */
1384 int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run)
1389 if (vcpu->mmio_needed) {
1390 vcpu->mmio_needed = 0;
1391 if (!vcpu->mmio_is_write)
1392 kvmppc_complete_mmio_load(vcpu, run);
1394 if (vcpu->arch.mmio_vsx_copy_nums > 0) {
1395 vcpu->arch.mmio_vsx_copy_nums--;
1396 vcpu->arch.mmio_vsx_offset++;
1399 if (vcpu->arch.mmio_vsx_copy_nums > 0) {
1400 r = kvmppc_emulate_mmio_vsx_loadstore(vcpu, run);
1401 if (r == RESUME_HOST) {
1402 vcpu->mmio_needed = 1;
1407 } else if (vcpu->arch.osi_needed) {
1408 u64 *gprs = run->osi.gprs;
1411 for (i = 0; i < 32; i++)
1412 kvmppc_set_gpr(vcpu, i, gprs[i]);
1413 vcpu->arch.osi_needed = 0;
1414 } else if (vcpu->arch.hcall_needed) {
1417 kvmppc_set_gpr(vcpu, 3, run->papr_hcall.ret);
1418 for (i = 0; i < 9; ++i)
1419 kvmppc_set_gpr(vcpu, 4 + i, run->papr_hcall.args[i]);
1420 vcpu->arch.hcall_needed = 0;
1422 } else if (vcpu->arch.epr_needed) {
1423 kvmppc_set_epr(vcpu, run->epr.epr);
1424 vcpu->arch.epr_needed = 0;
1428 if (vcpu->sigset_active)
1429 sigprocmask(SIG_SETMASK, &vcpu->sigset, &sigsaved);
1431 if (run->immediate_exit)
1434 r = kvmppc_vcpu_run(run, vcpu);
1436 if (vcpu->sigset_active)
1437 sigprocmask(SIG_SETMASK, &sigsaved, NULL);
1442 int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq)
1444 if (irq->irq == KVM_INTERRUPT_UNSET) {
1445 kvmppc_core_dequeue_external(vcpu);
1449 kvmppc_core_queue_external(vcpu, irq);
1451 kvm_vcpu_kick(vcpu);
1456 static int kvm_vcpu_ioctl_enable_cap(struct kvm_vcpu *vcpu,
1457 struct kvm_enable_cap *cap)
1465 case KVM_CAP_PPC_OSI:
1467 vcpu->arch.osi_enabled = true;
1469 case KVM_CAP_PPC_PAPR:
1471 vcpu->arch.papr_enabled = true;
1473 case KVM_CAP_PPC_EPR:
1476 vcpu->arch.epr_flags |= KVMPPC_EPR_USER;
1478 vcpu->arch.epr_flags &= ~KVMPPC_EPR_USER;
1481 case KVM_CAP_PPC_BOOKE_WATCHDOG:
1483 vcpu->arch.watchdog_enabled = true;
1486 #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC)
1487 case KVM_CAP_SW_TLB: {
1488 struct kvm_config_tlb cfg;
1489 void __user *user_ptr = (void __user *)(uintptr_t)cap->args[0];
1492 if (copy_from_user(&cfg, user_ptr, sizeof(cfg)))
1495 r = kvm_vcpu_ioctl_config_tlb(vcpu, &cfg);
1499 #ifdef CONFIG_KVM_MPIC
1500 case KVM_CAP_IRQ_MPIC: {
1502 struct kvm_device *dev;
1505 f = fdget(cap->args[0]);
1510 dev = kvm_device_from_filp(f.file);
1512 r = kvmppc_mpic_connect_vcpu(dev, vcpu, cap->args[1]);
1518 #ifdef CONFIG_KVM_XICS
1519 case KVM_CAP_IRQ_XICS: {
1521 struct kvm_device *dev;
1524 f = fdget(cap->args[0]);
1529 dev = kvm_device_from_filp(f.file);
1532 r = kvmppc_xive_connect_vcpu(dev, vcpu, cap->args[1]);
1534 r = kvmppc_xics_connect_vcpu(dev, vcpu, cap->args[1]);
1540 #endif /* CONFIG_KVM_XICS */
1547 r = kvmppc_sanity_check(vcpu);
1552 bool kvm_arch_intc_initialized(struct kvm *kvm)
1554 #ifdef CONFIG_KVM_MPIC
1558 #ifdef CONFIG_KVM_XICS
1559 if (kvm->arch.xics || kvm->arch.xive)
1565 int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu,
1566 struct kvm_mp_state *mp_state)
1571 int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,
1572 struct kvm_mp_state *mp_state)
1577 long kvm_arch_vcpu_ioctl(struct file *filp,
1578 unsigned int ioctl, unsigned long arg)
1580 struct kvm_vcpu *vcpu = filp->private_data;
1581 void __user *argp = (void __user *)arg;
1585 case KVM_INTERRUPT: {
1586 struct kvm_interrupt irq;
1588 if (copy_from_user(&irq, argp, sizeof(irq)))
1590 r = kvm_vcpu_ioctl_interrupt(vcpu, &irq);
1594 case KVM_ENABLE_CAP:
1596 struct kvm_enable_cap cap;
1598 if (copy_from_user(&cap, argp, sizeof(cap)))
1600 r = kvm_vcpu_ioctl_enable_cap(vcpu, &cap);
1604 case KVM_SET_ONE_REG:
1605 case KVM_GET_ONE_REG:
1607 struct kvm_one_reg reg;
1609 if (copy_from_user(®, argp, sizeof(reg)))
1611 if (ioctl == KVM_SET_ONE_REG)
1612 r = kvm_vcpu_ioctl_set_one_reg(vcpu, ®);
1614 r = kvm_vcpu_ioctl_get_one_reg(vcpu, ®);
1618 #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC)
1619 case KVM_DIRTY_TLB: {
1620 struct kvm_dirty_tlb dirty;
1622 if (copy_from_user(&dirty, argp, sizeof(dirty)))
1624 r = kvm_vcpu_ioctl_dirty_tlb(vcpu, &dirty);
1636 int kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf)
1638 return VM_FAULT_SIGBUS;
1641 static int kvm_vm_ioctl_get_pvinfo(struct kvm_ppc_pvinfo *pvinfo)
1643 u32 inst_nop = 0x60000000;
1644 #ifdef CONFIG_KVM_BOOKE_HV
1645 u32 inst_sc1 = 0x44000022;
1646 pvinfo->hcall[0] = cpu_to_be32(inst_sc1);
1647 pvinfo->hcall[1] = cpu_to_be32(inst_nop);
1648 pvinfo->hcall[2] = cpu_to_be32(inst_nop);
1649 pvinfo->hcall[3] = cpu_to_be32(inst_nop);
1651 u32 inst_lis = 0x3c000000;
1652 u32 inst_ori = 0x60000000;
1653 u32 inst_sc = 0x44000002;
1654 u32 inst_imm_mask = 0xffff;
1657 * The hypercall to get into KVM from within guest context is as
1660 * lis r0, r0, KVM_SC_MAGIC_R0@h
1661 * ori r0, KVM_SC_MAGIC_R0@l
1665 pvinfo->hcall[0] = cpu_to_be32(inst_lis | ((KVM_SC_MAGIC_R0 >> 16) & inst_imm_mask));
1666 pvinfo->hcall[1] = cpu_to_be32(inst_ori | (KVM_SC_MAGIC_R0 & inst_imm_mask));
1667 pvinfo->hcall[2] = cpu_to_be32(inst_sc);
1668 pvinfo->hcall[3] = cpu_to_be32(inst_nop);
1671 pvinfo->flags = KVM_PPC_PVINFO_FLAGS_EV_IDLE;
1676 int kvm_vm_ioctl_irq_line(struct kvm *kvm, struct kvm_irq_level *irq_event,
1679 if (!irqchip_in_kernel(kvm))
1682 irq_event->status = kvm_set_irq(kvm, KVM_USERSPACE_IRQ_SOURCE_ID,
1683 irq_event->irq, irq_event->level,
1689 static int kvm_vm_ioctl_enable_cap(struct kvm *kvm,
1690 struct kvm_enable_cap *cap)
1698 #ifdef CONFIG_KVM_BOOK3S_64_HANDLER
1699 case KVM_CAP_PPC_ENABLE_HCALL: {
1700 unsigned long hcall = cap->args[0];
1703 if (hcall > MAX_HCALL_OPCODE || (hcall & 3) ||
1706 if (!kvmppc_book3s_hcall_implemented(kvm, hcall))
1709 set_bit(hcall / 4, kvm->arch.enabled_hcalls);
1711 clear_bit(hcall / 4, kvm->arch.enabled_hcalls);
1724 long kvm_arch_vm_ioctl(struct file *filp,
1725 unsigned int ioctl, unsigned long arg)
1727 struct kvm *kvm __maybe_unused = filp->private_data;
1728 void __user *argp = (void __user *)arg;
1732 case KVM_PPC_GET_PVINFO: {
1733 struct kvm_ppc_pvinfo pvinfo;
1734 memset(&pvinfo, 0, sizeof(pvinfo));
1735 r = kvm_vm_ioctl_get_pvinfo(&pvinfo);
1736 if (copy_to_user(argp, &pvinfo, sizeof(pvinfo))) {
1743 case KVM_ENABLE_CAP:
1745 struct kvm_enable_cap cap;
1747 if (copy_from_user(&cap, argp, sizeof(cap)))
1749 r = kvm_vm_ioctl_enable_cap(kvm, &cap);
1752 #ifdef CONFIG_SPAPR_TCE_IOMMU
1753 case KVM_CREATE_SPAPR_TCE_64: {
1754 struct kvm_create_spapr_tce_64 create_tce_64;
1757 if (copy_from_user(&create_tce_64, argp, sizeof(create_tce_64)))
1759 if (create_tce_64.flags) {
1763 r = kvm_vm_ioctl_create_spapr_tce(kvm, &create_tce_64);
1766 case KVM_CREATE_SPAPR_TCE: {
1767 struct kvm_create_spapr_tce create_tce;
1768 struct kvm_create_spapr_tce_64 create_tce_64;
1771 if (copy_from_user(&create_tce, argp, sizeof(create_tce)))
1774 create_tce_64.liobn = create_tce.liobn;
1775 create_tce_64.page_shift = IOMMU_PAGE_SHIFT_4K;
1776 create_tce_64.offset = 0;
1777 create_tce_64.size = create_tce.window_size >>
1778 IOMMU_PAGE_SHIFT_4K;
1779 create_tce_64.flags = 0;
1780 r = kvm_vm_ioctl_create_spapr_tce(kvm, &create_tce_64);
1784 #ifdef CONFIG_PPC_BOOK3S_64
1785 case KVM_PPC_GET_SMMU_INFO: {
1786 struct kvm_ppc_smmu_info info;
1787 struct kvm *kvm = filp->private_data;
1789 memset(&info, 0, sizeof(info));
1790 r = kvm->arch.kvm_ops->get_smmu_info(kvm, &info);
1791 if (r >= 0 && copy_to_user(argp, &info, sizeof(info)))
1795 case KVM_PPC_RTAS_DEFINE_TOKEN: {
1796 struct kvm *kvm = filp->private_data;
1798 r = kvm_vm_ioctl_rtas_define_token(kvm, argp);
1801 case KVM_PPC_CONFIGURE_V3_MMU: {
1802 struct kvm *kvm = filp->private_data;
1803 struct kvm_ppc_mmuv3_cfg cfg;
1806 if (!kvm->arch.kvm_ops->configure_mmu)
1809 if (copy_from_user(&cfg, argp, sizeof(cfg)))
1811 r = kvm->arch.kvm_ops->configure_mmu(kvm, &cfg);
1814 case KVM_PPC_GET_RMMU_INFO: {
1815 struct kvm *kvm = filp->private_data;
1816 struct kvm_ppc_rmmu_info info;
1819 if (!kvm->arch.kvm_ops->get_rmmu_info)
1821 r = kvm->arch.kvm_ops->get_rmmu_info(kvm, &info);
1822 if (r >= 0 && copy_to_user(argp, &info, sizeof(info)))
1827 struct kvm *kvm = filp->private_data;
1828 r = kvm->arch.kvm_ops->arch_vm_ioctl(filp, ioctl, arg);
1830 #else /* CONFIG_PPC_BOOK3S_64 */
1839 static unsigned long lpid_inuse[BITS_TO_LONGS(KVMPPC_NR_LPIDS)];
1840 static unsigned long nr_lpids;
1842 long kvmppc_alloc_lpid(void)
1847 lpid = find_first_zero_bit(lpid_inuse, KVMPPC_NR_LPIDS);
1848 if (lpid >= nr_lpids) {
1849 pr_err("%s: No LPIDs free\n", __func__);
1852 } while (test_and_set_bit(lpid, lpid_inuse));
1856 EXPORT_SYMBOL_GPL(kvmppc_alloc_lpid);
1858 void kvmppc_claim_lpid(long lpid)
1860 set_bit(lpid, lpid_inuse);
1862 EXPORT_SYMBOL_GPL(kvmppc_claim_lpid);
1864 void kvmppc_free_lpid(long lpid)
1866 clear_bit(lpid, lpid_inuse);
1868 EXPORT_SYMBOL_GPL(kvmppc_free_lpid);
1870 void kvmppc_init_lpid(unsigned long nr_lpids_param)
1872 nr_lpids = min_t(unsigned long, KVMPPC_NR_LPIDS, nr_lpids_param);
1873 memset(lpid_inuse, 0, sizeof(lpid_inuse));
1875 EXPORT_SYMBOL_GPL(kvmppc_init_lpid);
1877 int kvm_arch_init(void *opaque)
1882 EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_ppc_instr);