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>
27 #include <linux/slab.h>
28 #include <linux/file.h>
29 #include <linux/module.h>
30 #include <asm/cputable.h>
31 #include <asm/uaccess.h>
32 #include <asm/kvm_ppc.h>
33 #include <asm/tlbflush.h>
34 #include <asm/cputhreads.h>
35 #include <asm/irqflags.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) ||
55 int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu)
61 * Common checks before entering the guest world. Call with interrupts
66 * == 1 if we're ready to go into guest state
67 * <= 0 if we need to go back to the host with return value
69 int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu)
73 WARN_ON_ONCE(!irqs_disabled());
82 if (signal_pending(current)) {
83 kvmppc_account_exit(vcpu, SIGNAL_EXITS);
84 vcpu->run->exit_reason = KVM_EXIT_INTR;
89 vcpu->mode = IN_GUEST_MODE;
92 * Reading vcpu->requests must happen after setting vcpu->mode,
93 * so we don't miss a request because the requester sees
94 * OUTSIDE_GUEST_MODE and assumes we'll be checking requests
95 * before next entering the guest (and thus doesn't IPI).
100 /* Make sure we process requests preemptable */
102 trace_kvm_check_requests(vcpu);
103 r = kvmppc_core_check_requests(vcpu);
110 if (kvmppc_core_prepare_to_enter(vcpu)) {
111 /* interrupts got enabled in between, so we
112 are back at square 1 */
119 if (lazy_irq_pending()) {
120 /* Got an interrupt in between, try again */
134 EXPORT_SYMBOL_GPL(kvmppc_prepare_to_enter);
136 int kvmppc_kvm_pv(struct kvm_vcpu *vcpu)
138 int nr = kvmppc_get_gpr(vcpu, 11);
140 unsigned long __maybe_unused param1 = kvmppc_get_gpr(vcpu, 3);
141 unsigned long __maybe_unused param2 = kvmppc_get_gpr(vcpu, 4);
142 unsigned long __maybe_unused param3 = kvmppc_get_gpr(vcpu, 5);
143 unsigned long __maybe_unused param4 = kvmppc_get_gpr(vcpu, 6);
144 unsigned long r2 = 0;
146 if (!(vcpu->arch.shared->msr & MSR_SF)) {
148 param1 &= 0xffffffff;
149 param2 &= 0xffffffff;
150 param3 &= 0xffffffff;
151 param4 &= 0xffffffff;
155 case KVM_HCALL_TOKEN(KVM_HC_PPC_MAP_MAGIC_PAGE):
157 vcpu->arch.magic_page_pa = param1;
158 vcpu->arch.magic_page_ea = param2;
160 r2 = KVM_MAGIC_FEAT_SR | KVM_MAGIC_FEAT_MAS0_TO_SPRG7;
165 case KVM_HCALL_TOKEN(KVM_HC_FEATURES):
167 #if defined(CONFIG_PPC_BOOK3S) || defined(CONFIG_KVM_E500V2)
168 /* XXX Missing magic page on 44x */
169 r2 |= (1 << KVM_FEATURE_MAGIC_PAGE);
172 /* Second return value is in r4 */
174 case EV_HCALL_TOKEN(EV_IDLE):
176 kvm_vcpu_block(vcpu);
177 clear_bit(KVM_REQ_UNHALT, &vcpu->requests);
180 r = EV_UNIMPLEMENTED;
184 kvmppc_set_gpr(vcpu, 4, r2);
188 EXPORT_SYMBOL_GPL(kvmppc_kvm_pv);
190 int kvmppc_sanity_check(struct kvm_vcpu *vcpu)
194 /* We have to know what CPU to virtualize */
198 /* PAPR only works with book3s_64 */
199 if ((vcpu->arch.cpu_type != KVM_CPU_3S_64) && vcpu->arch.papr_enabled)
202 /* HV KVM can only do PAPR mode for now */
203 if (!vcpu->arch.papr_enabled && is_kvmppc_hv_enabled(vcpu->kvm))
206 #ifdef CONFIG_KVM_BOOKE_HV
207 if (!cpu_has_feature(CPU_FTR_EMB_HV))
215 return r ? 0 : -EINVAL;
217 EXPORT_SYMBOL_GPL(kvmppc_sanity_check);
219 int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu)
221 enum emulation_result er;
224 er = kvmppc_emulate_instruction(run, vcpu);
227 /* Future optimization: only reload non-volatiles if they were
228 * actually modified. */
231 case EMULATE_DO_MMIO:
232 run->exit_reason = KVM_EXIT_MMIO;
233 /* We must reload nonvolatiles because "update" load/store
234 * instructions modify register state. */
235 /* Future optimization: only reload non-volatiles if they were
236 * actually modified. */
240 /* XXX Deliver Program interrupt to guest. */
241 printk(KERN_EMERG "%s: emulation failed (%08x)\n", __func__,
242 kvmppc_get_last_inst(vcpu));
252 EXPORT_SYMBOL_GPL(kvmppc_emulate_mmio);
254 int kvm_arch_hardware_enable(void *garbage)
259 void kvm_arch_hardware_disable(void *garbage)
263 int kvm_arch_hardware_setup(void)
268 void kvm_arch_hardware_unsetup(void)
272 void kvm_arch_check_processor_compat(void *rtn)
274 *(int *)rtn = kvmppc_core_check_processor_compat();
277 int kvm_arch_init_vm(struct kvm *kvm, unsigned long type)
279 struct kvmppc_ops *kvm_ops = NULL;
281 * if we have both HV and PR enabled, default is HV
285 kvm_ops = kvmppc_hv_ops;
287 kvm_ops = kvmppc_pr_ops;
290 } else if (type == KVM_VM_PPC_HV) {
293 kvm_ops = kvmppc_hv_ops;
294 } else if (type == KVM_VM_PPC_PR) {
297 kvm_ops = kvmppc_pr_ops;
301 if (kvm_ops->owner && !try_module_get(kvm_ops->owner))
304 kvm->arch.kvm_ops = kvm_ops;
305 return kvmppc_core_init_vm(kvm);
310 void kvm_arch_destroy_vm(struct kvm *kvm)
313 struct kvm_vcpu *vcpu;
315 kvm_for_each_vcpu(i, vcpu, kvm)
316 kvm_arch_vcpu_free(vcpu);
318 mutex_lock(&kvm->lock);
319 for (i = 0; i < atomic_read(&kvm->online_vcpus); i++)
320 kvm->vcpus[i] = NULL;
322 atomic_set(&kvm->online_vcpus, 0);
324 kvmppc_core_destroy_vm(kvm);
326 mutex_unlock(&kvm->lock);
328 /* drop the module reference */
329 module_put(kvm->arch.kvm_ops->owner);
332 void kvm_arch_sync_events(struct kvm *kvm)
336 int kvm_dev_ioctl_check_extension(long ext)
340 * Should some of this be vm ioctl ? is it possible now ?
342 int hv_enabled = kvmppc_hv_ops ? 1 : 0;
346 case KVM_CAP_PPC_BOOKE_SREGS:
347 case KVM_CAP_PPC_BOOKE_WATCHDOG:
348 case KVM_CAP_PPC_EPR:
350 case KVM_CAP_PPC_SEGSTATE:
351 case KVM_CAP_PPC_HIOR:
352 case KVM_CAP_PPC_PAPR:
354 case KVM_CAP_PPC_UNSET_IRQ:
355 case KVM_CAP_PPC_IRQ_LEVEL:
356 case KVM_CAP_ENABLE_CAP:
357 case KVM_CAP_ONE_REG:
358 case KVM_CAP_IOEVENTFD:
359 case KVM_CAP_DEVICE_CTRL:
362 case KVM_CAP_PPC_PAIRED_SINGLES:
363 case KVM_CAP_PPC_OSI:
364 case KVM_CAP_PPC_GET_PVINFO:
365 #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC)
368 /* We support this only for PR */
371 #ifdef CONFIG_KVM_MMIO
372 case KVM_CAP_COALESCED_MMIO:
373 r = KVM_COALESCED_MMIO_PAGE_OFFSET;
376 #ifdef CONFIG_KVM_MPIC
377 case KVM_CAP_IRQ_MPIC:
382 #ifdef CONFIG_PPC_BOOK3S_64
383 case KVM_CAP_SPAPR_TCE:
384 case KVM_CAP_PPC_ALLOC_HTAB:
385 case KVM_CAP_PPC_RTAS:
386 #ifdef CONFIG_KVM_XICS
387 case KVM_CAP_IRQ_XICS:
391 #endif /* CONFIG_PPC_BOOK3S_64 */
392 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
393 case KVM_CAP_PPC_SMT:
395 r = threads_per_core;
399 case KVM_CAP_PPC_RMA:
401 /* PPC970 requires an RMA */
402 if (r && cpu_has_feature(CPU_FTR_ARCH_201))
406 case KVM_CAP_SYNC_MMU:
407 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
409 r = cpu_has_feature(CPU_FTR_ARCH_206) ? 1 : 0;
412 #elif defined(KVM_ARCH_WANT_MMU_NOTIFIER)
418 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
419 case KVM_CAP_PPC_HTAB_FD:
423 case KVM_CAP_NR_VCPUS:
425 * Recommending a number of CPUs is somewhat arbitrary; we
426 * return the number of present CPUs for -HV (since a host
427 * will have secondary threads "offline"), and for other KVM
428 * implementations just count online CPUs.
431 r = num_present_cpus();
433 r = num_online_cpus();
435 case KVM_CAP_MAX_VCPUS:
438 #ifdef CONFIG_PPC_BOOK3S_64
439 case KVM_CAP_PPC_GET_SMMU_INFO:
451 long kvm_arch_dev_ioctl(struct file *filp,
452 unsigned int ioctl, unsigned long arg)
457 void kvm_arch_free_memslot(struct kvm *kvm, struct kvm_memory_slot *free,
458 struct kvm_memory_slot *dont)
460 kvmppc_core_free_memslot(kvm, free, dont);
463 int kvm_arch_create_memslot(struct kvm *kvm, struct kvm_memory_slot *slot,
464 unsigned long npages)
466 return kvmppc_core_create_memslot(kvm, slot, npages);
469 void kvm_arch_memslots_updated(struct kvm *kvm)
473 int kvm_arch_prepare_memory_region(struct kvm *kvm,
474 struct kvm_memory_slot *memslot,
475 struct kvm_userspace_memory_region *mem,
476 enum kvm_mr_change change)
478 return kvmppc_core_prepare_memory_region(kvm, memslot, mem);
481 void kvm_arch_commit_memory_region(struct kvm *kvm,
482 struct kvm_userspace_memory_region *mem,
483 const struct kvm_memory_slot *old,
484 enum kvm_mr_change change)
486 kvmppc_core_commit_memory_region(kvm, mem, old);
489 void kvm_arch_flush_shadow_all(struct kvm *kvm)
493 void kvm_arch_flush_shadow_memslot(struct kvm *kvm,
494 struct kvm_memory_slot *slot)
496 kvmppc_core_flush_memslot(kvm, slot);
499 struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id)
501 struct kvm_vcpu *vcpu;
502 vcpu = kvmppc_core_vcpu_create(kvm, id);
504 vcpu->arch.wqp = &vcpu->wq;
505 kvmppc_create_vcpu_debugfs(vcpu, id);
510 int kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu)
515 void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu)
517 /* Make sure we're not using the vcpu anymore */
518 hrtimer_cancel(&vcpu->arch.dec_timer);
519 tasklet_kill(&vcpu->arch.tasklet);
521 kvmppc_remove_vcpu_debugfs(vcpu);
523 switch (vcpu->arch.irq_type) {
524 case KVMPPC_IRQ_MPIC:
525 kvmppc_mpic_disconnect_vcpu(vcpu->arch.mpic, vcpu);
527 case KVMPPC_IRQ_XICS:
528 kvmppc_xics_free_icp(vcpu);
532 kvmppc_core_vcpu_free(vcpu);
535 void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu)
537 kvm_arch_vcpu_free(vcpu);
540 int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu)
542 return kvmppc_core_pending_dec(vcpu);
546 * low level hrtimer wake routine. Because this runs in hardirq context
547 * we schedule a tasklet to do the real work.
549 enum hrtimer_restart kvmppc_decrementer_wakeup(struct hrtimer *timer)
551 struct kvm_vcpu *vcpu;
553 vcpu = container_of(timer, struct kvm_vcpu, arch.dec_timer);
554 tasklet_schedule(&vcpu->arch.tasklet);
556 return HRTIMER_NORESTART;
559 int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu)
563 hrtimer_init(&vcpu->arch.dec_timer, CLOCK_REALTIME, HRTIMER_MODE_ABS);
564 tasklet_init(&vcpu->arch.tasklet, kvmppc_decrementer_func, (ulong)vcpu);
565 vcpu->arch.dec_timer.function = kvmppc_decrementer_wakeup;
566 vcpu->arch.dec_expires = ~(u64)0;
568 #ifdef CONFIG_KVM_EXIT_TIMING
569 mutex_init(&vcpu->arch.exit_timing_lock);
571 ret = kvmppc_subarch_vcpu_init(vcpu);
575 void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu)
577 kvmppc_mmu_destroy(vcpu);
578 kvmppc_subarch_vcpu_uninit(vcpu);
581 void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
585 * vrsave (formerly usprg0) isn't used by Linux, but may
586 * be used by the guest.
588 * On non-booke this is associated with Altivec and
589 * is handled by code in book3s.c.
591 mtspr(SPRN_VRSAVE, vcpu->arch.vrsave);
593 kvmppc_core_vcpu_load(vcpu, cpu);
596 void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu)
598 kvmppc_core_vcpu_put(vcpu);
600 vcpu->arch.vrsave = mfspr(SPRN_VRSAVE);
604 static void kvmppc_complete_dcr_load(struct kvm_vcpu *vcpu,
607 kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, run->dcr.data);
610 static void kvmppc_complete_mmio_load(struct kvm_vcpu *vcpu,
613 u64 uninitialized_var(gpr);
615 if (run->mmio.len > sizeof(gpr)) {
616 printk(KERN_ERR "bad MMIO length: %d\n", run->mmio.len);
620 if (vcpu->arch.mmio_is_bigendian) {
621 switch (run->mmio.len) {
622 case 8: gpr = *(u64 *)run->mmio.data; break;
623 case 4: gpr = *(u32 *)run->mmio.data; break;
624 case 2: gpr = *(u16 *)run->mmio.data; break;
625 case 1: gpr = *(u8 *)run->mmio.data; break;
628 /* Convert BE data from userland back to LE. */
629 switch (run->mmio.len) {
630 case 4: gpr = ld_le32((u32 *)run->mmio.data); break;
631 case 2: gpr = ld_le16((u16 *)run->mmio.data); break;
632 case 1: gpr = *(u8 *)run->mmio.data; break;
636 if (vcpu->arch.mmio_sign_extend) {
637 switch (run->mmio.len) {
652 kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, gpr);
654 switch (vcpu->arch.io_gpr & KVM_MMIO_REG_EXT_MASK) {
655 case KVM_MMIO_REG_GPR:
656 kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, gpr);
658 case KVM_MMIO_REG_FPR:
659 vcpu->arch.fpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr;
661 #ifdef CONFIG_PPC_BOOK3S
662 case KVM_MMIO_REG_QPR:
663 vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr;
665 case KVM_MMIO_REG_FQPR:
666 vcpu->arch.fpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr;
667 vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr;
675 int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
676 unsigned int rt, unsigned int bytes, int is_bigendian)
680 if (bytes > sizeof(run->mmio.data)) {
681 printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__,
685 run->mmio.phys_addr = vcpu->arch.paddr_accessed;
686 run->mmio.len = bytes;
687 run->mmio.is_write = 0;
689 vcpu->arch.io_gpr = rt;
690 vcpu->arch.mmio_is_bigendian = is_bigendian;
691 vcpu->mmio_needed = 1;
692 vcpu->mmio_is_write = 0;
693 vcpu->arch.mmio_sign_extend = 0;
695 idx = srcu_read_lock(&vcpu->kvm->srcu);
697 ret = kvm_io_bus_read(vcpu->kvm, KVM_MMIO_BUS, run->mmio.phys_addr,
698 bytes, &run->mmio.data);
700 srcu_read_unlock(&vcpu->kvm->srcu, idx);
703 kvmppc_complete_mmio_load(vcpu, run);
704 vcpu->mmio_needed = 0;
708 return EMULATE_DO_MMIO;
710 EXPORT_SYMBOL_GPL(kvmppc_handle_load);
712 /* Same as above, but sign extends */
713 int kvmppc_handle_loads(struct kvm_run *run, struct kvm_vcpu *vcpu,
714 unsigned int rt, unsigned int bytes, int is_bigendian)
718 vcpu->arch.mmio_sign_extend = 1;
719 r = kvmppc_handle_load(run, vcpu, rt, bytes, is_bigendian);
724 int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
725 u64 val, unsigned int bytes, int is_bigendian)
727 void *data = run->mmio.data;
730 if (bytes > sizeof(run->mmio.data)) {
731 printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__,
735 run->mmio.phys_addr = vcpu->arch.paddr_accessed;
736 run->mmio.len = bytes;
737 run->mmio.is_write = 1;
738 vcpu->mmio_needed = 1;
739 vcpu->mmio_is_write = 1;
741 /* Store the value at the lowest bytes in 'data'. */
744 case 8: *(u64 *)data = val; break;
745 case 4: *(u32 *)data = val; break;
746 case 2: *(u16 *)data = val; break;
747 case 1: *(u8 *)data = val; break;
750 /* Store LE value into 'data'. */
752 case 4: st_le32(data, val); break;
753 case 2: st_le16(data, val); break;
754 case 1: *(u8 *)data = val; break;
758 idx = srcu_read_lock(&vcpu->kvm->srcu);
760 ret = kvm_io_bus_write(vcpu->kvm, KVM_MMIO_BUS, run->mmio.phys_addr,
761 bytes, &run->mmio.data);
763 srcu_read_unlock(&vcpu->kvm->srcu, idx);
766 vcpu->mmio_needed = 0;
770 return EMULATE_DO_MMIO;
772 EXPORT_SYMBOL_GPL(kvmppc_handle_store);
774 int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run)
779 if (vcpu->sigset_active)
780 sigprocmask(SIG_SETMASK, &vcpu->sigset, &sigsaved);
782 if (vcpu->mmio_needed) {
783 if (!vcpu->mmio_is_write)
784 kvmppc_complete_mmio_load(vcpu, run);
785 vcpu->mmio_needed = 0;
786 } else if (vcpu->arch.dcr_needed) {
787 if (!vcpu->arch.dcr_is_write)
788 kvmppc_complete_dcr_load(vcpu, run);
789 vcpu->arch.dcr_needed = 0;
790 } else if (vcpu->arch.osi_needed) {
791 u64 *gprs = run->osi.gprs;
794 for (i = 0; i < 32; i++)
795 kvmppc_set_gpr(vcpu, i, gprs[i]);
796 vcpu->arch.osi_needed = 0;
797 } else if (vcpu->arch.hcall_needed) {
800 kvmppc_set_gpr(vcpu, 3, run->papr_hcall.ret);
801 for (i = 0; i < 9; ++i)
802 kvmppc_set_gpr(vcpu, 4 + i, run->papr_hcall.args[i]);
803 vcpu->arch.hcall_needed = 0;
805 } else if (vcpu->arch.epr_needed) {
806 kvmppc_set_epr(vcpu, run->epr.epr);
807 vcpu->arch.epr_needed = 0;
811 r = kvmppc_vcpu_run(run, vcpu);
813 if (vcpu->sigset_active)
814 sigprocmask(SIG_SETMASK, &sigsaved, NULL);
819 int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq)
821 if (irq->irq == KVM_INTERRUPT_UNSET) {
822 kvmppc_core_dequeue_external(vcpu);
826 kvmppc_core_queue_external(vcpu, irq);
833 static int kvm_vcpu_ioctl_enable_cap(struct kvm_vcpu *vcpu,
834 struct kvm_enable_cap *cap)
842 case KVM_CAP_PPC_OSI:
844 vcpu->arch.osi_enabled = true;
846 case KVM_CAP_PPC_PAPR:
848 vcpu->arch.papr_enabled = true;
850 case KVM_CAP_PPC_EPR:
853 vcpu->arch.epr_flags |= KVMPPC_EPR_USER;
855 vcpu->arch.epr_flags &= ~KVMPPC_EPR_USER;
858 case KVM_CAP_PPC_BOOKE_WATCHDOG:
860 vcpu->arch.watchdog_enabled = true;
863 #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC)
864 case KVM_CAP_SW_TLB: {
865 struct kvm_config_tlb cfg;
866 void __user *user_ptr = (void __user *)(uintptr_t)cap->args[0];
869 if (copy_from_user(&cfg, user_ptr, sizeof(cfg)))
872 r = kvm_vcpu_ioctl_config_tlb(vcpu, &cfg);
876 #ifdef CONFIG_KVM_MPIC
877 case KVM_CAP_IRQ_MPIC: {
879 struct kvm_device *dev;
882 f = fdget(cap->args[0]);
887 dev = kvm_device_from_filp(f.file);
889 r = kvmppc_mpic_connect_vcpu(dev, vcpu, cap->args[1]);
895 #ifdef CONFIG_KVM_XICS
896 case KVM_CAP_IRQ_XICS: {
898 struct kvm_device *dev;
901 f = fdget(cap->args[0]);
906 dev = kvm_device_from_filp(f.file);
908 r = kvmppc_xics_connect_vcpu(dev, vcpu, cap->args[1]);
913 #endif /* CONFIG_KVM_XICS */
920 r = kvmppc_sanity_check(vcpu);
925 int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu,
926 struct kvm_mp_state *mp_state)
931 int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,
932 struct kvm_mp_state *mp_state)
937 long kvm_arch_vcpu_ioctl(struct file *filp,
938 unsigned int ioctl, unsigned long arg)
940 struct kvm_vcpu *vcpu = filp->private_data;
941 void __user *argp = (void __user *)arg;
945 case KVM_INTERRUPT: {
946 struct kvm_interrupt irq;
948 if (copy_from_user(&irq, argp, sizeof(irq)))
950 r = kvm_vcpu_ioctl_interrupt(vcpu, &irq);
956 struct kvm_enable_cap cap;
958 if (copy_from_user(&cap, argp, sizeof(cap)))
960 r = kvm_vcpu_ioctl_enable_cap(vcpu, &cap);
964 case KVM_SET_ONE_REG:
965 case KVM_GET_ONE_REG:
967 struct kvm_one_reg reg;
969 if (copy_from_user(®, argp, sizeof(reg)))
971 if (ioctl == KVM_SET_ONE_REG)
972 r = kvm_vcpu_ioctl_set_one_reg(vcpu, ®);
974 r = kvm_vcpu_ioctl_get_one_reg(vcpu, ®);
978 #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC)
979 case KVM_DIRTY_TLB: {
980 struct kvm_dirty_tlb dirty;
982 if (copy_from_user(&dirty, argp, sizeof(dirty)))
984 r = kvm_vcpu_ioctl_dirty_tlb(vcpu, &dirty);
996 int kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf)
998 return VM_FAULT_SIGBUS;
1001 static int kvm_vm_ioctl_get_pvinfo(struct kvm_ppc_pvinfo *pvinfo)
1003 u32 inst_nop = 0x60000000;
1004 #ifdef CONFIG_KVM_BOOKE_HV
1005 u32 inst_sc1 = 0x44000022;
1006 pvinfo->hcall[0] = inst_sc1;
1007 pvinfo->hcall[1] = inst_nop;
1008 pvinfo->hcall[2] = inst_nop;
1009 pvinfo->hcall[3] = inst_nop;
1011 u32 inst_lis = 0x3c000000;
1012 u32 inst_ori = 0x60000000;
1013 u32 inst_sc = 0x44000002;
1014 u32 inst_imm_mask = 0xffff;
1017 * The hypercall to get into KVM from within guest context is as
1020 * lis r0, r0, KVM_SC_MAGIC_R0@h
1021 * ori r0, KVM_SC_MAGIC_R0@l
1025 pvinfo->hcall[0] = inst_lis | ((KVM_SC_MAGIC_R0 >> 16) & inst_imm_mask);
1026 pvinfo->hcall[1] = inst_ori | (KVM_SC_MAGIC_R0 & inst_imm_mask);
1027 pvinfo->hcall[2] = inst_sc;
1028 pvinfo->hcall[3] = inst_nop;
1031 pvinfo->flags = KVM_PPC_PVINFO_FLAGS_EV_IDLE;
1036 int kvm_vm_ioctl_irq_line(struct kvm *kvm, struct kvm_irq_level *irq_event,
1039 if (!irqchip_in_kernel(kvm))
1042 irq_event->status = kvm_set_irq(kvm, KVM_USERSPACE_IRQ_SOURCE_ID,
1043 irq_event->irq, irq_event->level,
1048 long kvm_arch_vm_ioctl(struct file *filp,
1049 unsigned int ioctl, unsigned long arg)
1051 struct kvm *kvm __maybe_unused = filp->private_data;
1052 void __user *argp = (void __user *)arg;
1056 case KVM_PPC_GET_PVINFO: {
1057 struct kvm_ppc_pvinfo pvinfo;
1058 memset(&pvinfo, 0, sizeof(pvinfo));
1059 r = kvm_vm_ioctl_get_pvinfo(&pvinfo);
1060 if (copy_to_user(argp, &pvinfo, sizeof(pvinfo))) {
1067 #ifdef CONFIG_PPC_BOOK3S_64
1068 case KVM_CREATE_SPAPR_TCE: {
1069 struct kvm_create_spapr_tce create_tce;
1072 if (copy_from_user(&create_tce, argp, sizeof(create_tce)))
1074 r = kvm_vm_ioctl_create_spapr_tce(kvm, &create_tce);
1077 case KVM_PPC_GET_SMMU_INFO: {
1078 struct kvm_ppc_smmu_info info;
1079 struct kvm *kvm = filp->private_data;
1081 memset(&info, 0, sizeof(info));
1082 r = kvm->arch.kvm_ops->get_smmu_info(kvm, &info);
1083 if (r >= 0 && copy_to_user(argp, &info, sizeof(info)))
1087 case KVM_PPC_RTAS_DEFINE_TOKEN: {
1088 struct kvm *kvm = filp->private_data;
1090 r = kvm_vm_ioctl_rtas_define_token(kvm, argp);
1094 struct kvm *kvm = filp->private_data;
1095 r = kvm->arch.kvm_ops->arch_vm_ioctl(filp, ioctl, arg);
1097 #else /* CONFIG_PPC_BOOK3S_64 */
1106 static unsigned long lpid_inuse[BITS_TO_LONGS(KVMPPC_NR_LPIDS)];
1107 static unsigned long nr_lpids;
1109 long kvmppc_alloc_lpid(void)
1114 lpid = find_first_zero_bit(lpid_inuse, KVMPPC_NR_LPIDS);
1115 if (lpid >= nr_lpids) {
1116 pr_err("%s: No LPIDs free\n", __func__);
1119 } while (test_and_set_bit(lpid, lpid_inuse));
1123 EXPORT_SYMBOL_GPL(kvmppc_alloc_lpid);
1125 void kvmppc_claim_lpid(long lpid)
1127 set_bit(lpid, lpid_inuse);
1129 EXPORT_SYMBOL_GPL(kvmppc_claim_lpid);
1131 void kvmppc_free_lpid(long lpid)
1133 clear_bit(lpid, lpid_inuse);
1135 EXPORT_SYMBOL_GPL(kvmppc_free_lpid);
1137 void kvmppc_init_lpid(unsigned long nr_lpids_param)
1139 nr_lpids = min_t(unsigned long, KVMPPC_NR_LPIDS, nr_lpids_param);
1140 memset(lpid_inuse, 0, sizeof(lpid_inuse));
1142 EXPORT_SYMBOL_GPL(kvmppc_init_lpid);
1144 int kvm_arch_init(void *opaque)
1149 void kvm_arch_exit(void)