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(irqs_disabled());
84 if (signal_pending(current)) {
85 kvmppc_account_exit(vcpu, SIGNAL_EXITS);
86 vcpu->run->exit_reason = KVM_EXIT_INTR;
91 vcpu->mode = IN_GUEST_MODE;
94 * Reading vcpu->requests must happen after setting vcpu->mode,
95 * so we don't miss a request because the requester sees
96 * OUTSIDE_GUEST_MODE and assumes we'll be checking requests
97 * before next entering the guest (and thus doesn't IPI).
101 if (vcpu->requests) {
102 /* Make sure we process requests preemptable */
104 trace_kvm_check_requests(vcpu);
105 r = kvmppc_core_check_requests(vcpu);
112 if (kvmppc_core_prepare_to_enter(vcpu)) {
113 /* interrupts got enabled in between, so we
114 are back at square 1 */
126 EXPORT_SYMBOL_GPL(kvmppc_prepare_to_enter);
128 #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE)
129 static void kvmppc_swab_shared(struct kvm_vcpu *vcpu)
131 struct kvm_vcpu_arch_shared *shared = vcpu->arch.shared;
134 shared->sprg0 = swab64(shared->sprg0);
135 shared->sprg1 = swab64(shared->sprg1);
136 shared->sprg2 = swab64(shared->sprg2);
137 shared->sprg3 = swab64(shared->sprg3);
138 shared->srr0 = swab64(shared->srr0);
139 shared->srr1 = swab64(shared->srr1);
140 shared->dar = swab64(shared->dar);
141 shared->msr = swab64(shared->msr);
142 shared->dsisr = swab32(shared->dsisr);
143 shared->int_pending = swab32(shared->int_pending);
144 for (i = 0; i < ARRAY_SIZE(shared->sr); i++)
145 shared->sr[i] = swab32(shared->sr[i]);
149 int kvmppc_kvm_pv(struct kvm_vcpu *vcpu)
151 int nr = kvmppc_get_gpr(vcpu, 11);
153 unsigned long __maybe_unused param1 = kvmppc_get_gpr(vcpu, 3);
154 unsigned long __maybe_unused param2 = kvmppc_get_gpr(vcpu, 4);
155 unsigned long __maybe_unused param3 = kvmppc_get_gpr(vcpu, 5);
156 unsigned long __maybe_unused param4 = kvmppc_get_gpr(vcpu, 6);
157 unsigned long r2 = 0;
159 if (!(kvmppc_get_msr(vcpu) & MSR_SF)) {
161 param1 &= 0xffffffff;
162 param2 &= 0xffffffff;
163 param3 &= 0xffffffff;
164 param4 &= 0xffffffff;
168 case KVM_HCALL_TOKEN(KVM_HC_PPC_MAP_MAGIC_PAGE):
170 #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE)
171 /* Book3S can be little endian, find it out here */
172 int shared_big_endian = true;
173 if (vcpu->arch.intr_msr & MSR_LE)
174 shared_big_endian = false;
175 if (shared_big_endian != vcpu->arch.shared_big_endian)
176 kvmppc_swab_shared(vcpu);
177 vcpu->arch.shared_big_endian = shared_big_endian;
180 if (!(param2 & MAGIC_PAGE_FLAG_NOT_MAPPED_NX)) {
182 * Older versions of the Linux magic page code had
183 * a bug where they would map their trampoline code
184 * NX. If that's the case, remove !PR NX capability.
186 vcpu->arch.disable_kernel_nx = true;
187 kvm_make_request(KVM_REQ_TLB_FLUSH, vcpu);
190 vcpu->arch.magic_page_pa = param1 & ~0xfffULL;
191 vcpu->arch.magic_page_ea = param2 & ~0xfffULL;
193 r2 = KVM_MAGIC_FEAT_SR | KVM_MAGIC_FEAT_MAS0_TO_SPRG7;
198 case KVM_HCALL_TOKEN(KVM_HC_FEATURES):
200 #if defined(CONFIG_PPC_BOOK3S) || defined(CONFIG_KVM_E500V2)
201 /* XXX Missing magic page on 44x */
202 r2 |= (1 << KVM_FEATURE_MAGIC_PAGE);
205 /* Second return value is in r4 */
207 case EV_HCALL_TOKEN(EV_IDLE):
209 kvm_vcpu_block(vcpu);
210 clear_bit(KVM_REQ_UNHALT, &vcpu->requests);
213 r = EV_UNIMPLEMENTED;
217 kvmppc_set_gpr(vcpu, 4, r2);
221 EXPORT_SYMBOL_GPL(kvmppc_kvm_pv);
223 int kvmppc_sanity_check(struct kvm_vcpu *vcpu)
227 /* We have to know what CPU to virtualize */
231 /* PAPR only works with book3s_64 */
232 if ((vcpu->arch.cpu_type != KVM_CPU_3S_64) && vcpu->arch.papr_enabled)
235 /* HV KVM can only do PAPR mode for now */
236 if (!vcpu->arch.papr_enabled && is_kvmppc_hv_enabled(vcpu->kvm))
239 #ifdef CONFIG_KVM_BOOKE_HV
240 if (!cpu_has_feature(CPU_FTR_EMB_HV))
248 return r ? 0 : -EINVAL;
250 EXPORT_SYMBOL_GPL(kvmppc_sanity_check);
252 int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu)
254 enum emulation_result er;
257 er = kvmppc_emulate_instruction(run, vcpu);
260 /* Future optimization: only reload non-volatiles if they were
261 * actually modified. */
264 case EMULATE_DO_MMIO:
265 run->exit_reason = KVM_EXIT_MMIO;
266 /* We must reload nonvolatiles because "update" load/store
267 * instructions modify register state. */
268 /* Future optimization: only reload non-volatiles if they were
269 * actually modified. */
273 /* XXX Deliver Program interrupt to guest. */
274 printk(KERN_EMERG "%s: emulation failed (%08x)\n", __func__,
275 kvmppc_get_last_inst(vcpu));
285 EXPORT_SYMBOL_GPL(kvmppc_emulate_mmio);
287 int kvm_arch_hardware_enable(void *garbage)
292 void kvm_arch_hardware_disable(void *garbage)
296 int kvm_arch_hardware_setup(void)
301 void kvm_arch_hardware_unsetup(void)
305 void kvm_arch_check_processor_compat(void *rtn)
307 *(int *)rtn = kvmppc_core_check_processor_compat();
310 int kvm_arch_init_vm(struct kvm *kvm, unsigned long type)
312 struct kvmppc_ops *kvm_ops = NULL;
314 * if we have both HV and PR enabled, default is HV
318 kvm_ops = kvmppc_hv_ops;
320 kvm_ops = kvmppc_pr_ops;
323 } else if (type == KVM_VM_PPC_HV) {
326 kvm_ops = kvmppc_hv_ops;
327 } else if (type == KVM_VM_PPC_PR) {
330 kvm_ops = kvmppc_pr_ops;
334 if (kvm_ops->owner && !try_module_get(kvm_ops->owner))
337 kvm->arch.kvm_ops = kvm_ops;
338 return kvmppc_core_init_vm(kvm);
343 void kvm_arch_destroy_vm(struct kvm *kvm)
346 struct kvm_vcpu *vcpu;
348 kvm_for_each_vcpu(i, vcpu, kvm)
349 kvm_arch_vcpu_free(vcpu);
351 mutex_lock(&kvm->lock);
352 for (i = 0; i < atomic_read(&kvm->online_vcpus); i++)
353 kvm->vcpus[i] = NULL;
355 atomic_set(&kvm->online_vcpus, 0);
357 kvmppc_core_destroy_vm(kvm);
359 mutex_unlock(&kvm->lock);
361 /* drop the module reference */
362 module_put(kvm->arch.kvm_ops->owner);
365 void kvm_arch_sync_events(struct kvm *kvm)
369 int kvm_dev_ioctl_check_extension(long ext)
373 * Should some of this be vm ioctl ? is it possible now ?
375 int hv_enabled = kvmppc_hv_ops ? 1 : 0;
379 case KVM_CAP_PPC_BOOKE_SREGS:
380 case KVM_CAP_PPC_BOOKE_WATCHDOG:
381 case KVM_CAP_PPC_EPR:
383 case KVM_CAP_PPC_SEGSTATE:
384 case KVM_CAP_PPC_HIOR:
385 case KVM_CAP_PPC_PAPR:
387 case KVM_CAP_PPC_UNSET_IRQ:
388 case KVM_CAP_PPC_IRQ_LEVEL:
389 case KVM_CAP_ENABLE_CAP:
390 case KVM_CAP_ONE_REG:
391 case KVM_CAP_IOEVENTFD:
392 case KVM_CAP_DEVICE_CTRL:
395 case KVM_CAP_PPC_PAIRED_SINGLES:
396 case KVM_CAP_PPC_OSI:
397 case KVM_CAP_PPC_GET_PVINFO:
398 #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC)
401 /* We support this only for PR */
404 #ifdef CONFIG_KVM_MMIO
405 case KVM_CAP_COALESCED_MMIO:
406 r = KVM_COALESCED_MMIO_PAGE_OFFSET;
409 #ifdef CONFIG_KVM_MPIC
410 case KVM_CAP_IRQ_MPIC:
415 #ifdef CONFIG_PPC_BOOK3S_64
416 case KVM_CAP_SPAPR_TCE:
417 case KVM_CAP_PPC_ALLOC_HTAB:
418 case KVM_CAP_PPC_RTAS:
419 case KVM_CAP_PPC_FIXUP_HCALL:
420 #ifdef CONFIG_KVM_XICS
421 case KVM_CAP_IRQ_XICS:
425 #endif /* CONFIG_PPC_BOOK3S_64 */
426 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
427 case KVM_CAP_PPC_SMT:
429 r = threads_per_core;
433 case KVM_CAP_PPC_RMA:
435 /* PPC970 requires an RMA */
436 if (r && cpu_has_feature(CPU_FTR_ARCH_201))
440 case KVM_CAP_SYNC_MMU:
441 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
443 r = cpu_has_feature(CPU_FTR_ARCH_206) ? 1 : 0;
446 #elif defined(KVM_ARCH_WANT_MMU_NOTIFIER)
452 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
453 case KVM_CAP_PPC_HTAB_FD:
457 case KVM_CAP_NR_VCPUS:
459 * Recommending a number of CPUs is somewhat arbitrary; we
460 * return the number of present CPUs for -HV (since a host
461 * will have secondary threads "offline"), and for other KVM
462 * implementations just count online CPUs.
465 r = num_present_cpus();
467 r = num_online_cpus();
469 case KVM_CAP_MAX_VCPUS:
472 #ifdef CONFIG_PPC_BOOK3S_64
473 case KVM_CAP_PPC_GET_SMMU_INFO:
485 long kvm_arch_dev_ioctl(struct file *filp,
486 unsigned int ioctl, unsigned long arg)
491 void kvm_arch_free_memslot(struct kvm *kvm, struct kvm_memory_slot *free,
492 struct kvm_memory_slot *dont)
494 kvmppc_core_free_memslot(kvm, free, dont);
497 int kvm_arch_create_memslot(struct kvm *kvm, struct kvm_memory_slot *slot,
498 unsigned long npages)
500 return kvmppc_core_create_memslot(kvm, slot, npages);
503 void kvm_arch_memslots_updated(struct kvm *kvm)
507 int kvm_arch_prepare_memory_region(struct kvm *kvm,
508 struct kvm_memory_slot *memslot,
509 struct kvm_userspace_memory_region *mem,
510 enum kvm_mr_change change)
512 return kvmppc_core_prepare_memory_region(kvm, memslot, mem);
515 void kvm_arch_commit_memory_region(struct kvm *kvm,
516 struct kvm_userspace_memory_region *mem,
517 const struct kvm_memory_slot *old,
518 enum kvm_mr_change change)
520 kvmppc_core_commit_memory_region(kvm, mem, old);
523 void kvm_arch_flush_shadow_all(struct kvm *kvm)
527 void kvm_arch_flush_shadow_memslot(struct kvm *kvm,
528 struct kvm_memory_slot *slot)
530 kvmppc_core_flush_memslot(kvm, slot);
533 struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id)
535 struct kvm_vcpu *vcpu;
536 vcpu = kvmppc_core_vcpu_create(kvm, id);
538 vcpu->arch.wqp = &vcpu->wq;
539 kvmppc_create_vcpu_debugfs(vcpu, id);
544 int kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu)
549 void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu)
551 /* Make sure we're not using the vcpu anymore */
552 hrtimer_cancel(&vcpu->arch.dec_timer);
553 tasklet_kill(&vcpu->arch.tasklet);
555 kvmppc_remove_vcpu_debugfs(vcpu);
557 switch (vcpu->arch.irq_type) {
558 case KVMPPC_IRQ_MPIC:
559 kvmppc_mpic_disconnect_vcpu(vcpu->arch.mpic, vcpu);
561 case KVMPPC_IRQ_XICS:
562 kvmppc_xics_free_icp(vcpu);
566 kvmppc_core_vcpu_free(vcpu);
569 void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu)
571 kvm_arch_vcpu_free(vcpu);
574 int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu)
576 return kvmppc_core_pending_dec(vcpu);
580 * low level hrtimer wake routine. Because this runs in hardirq context
581 * we schedule a tasklet to do the real work.
583 enum hrtimer_restart kvmppc_decrementer_wakeup(struct hrtimer *timer)
585 struct kvm_vcpu *vcpu;
587 vcpu = container_of(timer, struct kvm_vcpu, arch.dec_timer);
588 tasklet_schedule(&vcpu->arch.tasklet);
590 return HRTIMER_NORESTART;
593 int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu)
597 hrtimer_init(&vcpu->arch.dec_timer, CLOCK_REALTIME, HRTIMER_MODE_ABS);
598 tasklet_init(&vcpu->arch.tasklet, kvmppc_decrementer_func, (ulong)vcpu);
599 vcpu->arch.dec_timer.function = kvmppc_decrementer_wakeup;
600 vcpu->arch.dec_expires = ~(u64)0;
602 #ifdef CONFIG_KVM_EXIT_TIMING
603 mutex_init(&vcpu->arch.exit_timing_lock);
605 ret = kvmppc_subarch_vcpu_init(vcpu);
609 void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu)
611 kvmppc_mmu_destroy(vcpu);
612 kvmppc_subarch_vcpu_uninit(vcpu);
615 void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
619 * vrsave (formerly usprg0) isn't used by Linux, but may
620 * be used by the guest.
622 * On non-booke this is associated with Altivec and
623 * is handled by code in book3s.c.
625 mtspr(SPRN_VRSAVE, vcpu->arch.vrsave);
627 kvmppc_core_vcpu_load(vcpu, cpu);
630 void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu)
632 kvmppc_core_vcpu_put(vcpu);
634 vcpu->arch.vrsave = mfspr(SPRN_VRSAVE);
638 static void kvmppc_complete_dcr_load(struct kvm_vcpu *vcpu,
641 kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, run->dcr.data);
644 static void kvmppc_complete_mmio_load(struct kvm_vcpu *vcpu,
647 u64 uninitialized_var(gpr);
649 if (run->mmio.len > sizeof(gpr)) {
650 printk(KERN_ERR "bad MMIO length: %d\n", run->mmio.len);
654 if (vcpu->arch.mmio_is_bigendian) {
655 switch (run->mmio.len) {
656 case 8: gpr = *(u64 *)run->mmio.data; break;
657 case 4: gpr = *(u32 *)run->mmio.data; break;
658 case 2: gpr = *(u16 *)run->mmio.data; break;
659 case 1: gpr = *(u8 *)run->mmio.data; break;
662 /* Convert BE data from userland back to LE. */
663 switch (run->mmio.len) {
664 case 4: gpr = ld_le32((u32 *)run->mmio.data); break;
665 case 2: gpr = ld_le16((u16 *)run->mmio.data); break;
666 case 1: gpr = *(u8 *)run->mmio.data; break;
670 if (vcpu->arch.mmio_sign_extend) {
671 switch (run->mmio.len) {
686 kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, gpr);
688 switch (vcpu->arch.io_gpr & KVM_MMIO_REG_EXT_MASK) {
689 case KVM_MMIO_REG_GPR:
690 kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, gpr);
692 case KVM_MMIO_REG_FPR:
693 VCPU_FPR(vcpu, vcpu->arch.io_gpr & KVM_MMIO_REG_MASK) = gpr;
695 #ifdef CONFIG_PPC_BOOK3S
696 case KVM_MMIO_REG_QPR:
697 vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr;
699 case KVM_MMIO_REG_FQPR:
700 VCPU_FPR(vcpu, vcpu->arch.io_gpr & KVM_MMIO_REG_MASK) = gpr;
701 vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr;
709 int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
710 unsigned int rt, unsigned int bytes,
711 int is_default_endian)
716 if (kvmppc_need_byteswap(vcpu)) {
717 /* Default endianness is "little endian". */
718 is_bigendian = !is_default_endian;
720 /* Default endianness is "big endian". */
721 is_bigendian = is_default_endian;
724 if (bytes > sizeof(run->mmio.data)) {
725 printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__,
729 run->mmio.phys_addr = vcpu->arch.paddr_accessed;
730 run->mmio.len = bytes;
731 run->mmio.is_write = 0;
733 vcpu->arch.io_gpr = rt;
734 vcpu->arch.mmio_is_bigendian = is_bigendian;
735 vcpu->mmio_needed = 1;
736 vcpu->mmio_is_write = 0;
737 vcpu->arch.mmio_sign_extend = 0;
739 idx = srcu_read_lock(&vcpu->kvm->srcu);
741 ret = kvm_io_bus_read(vcpu->kvm, KVM_MMIO_BUS, run->mmio.phys_addr,
742 bytes, &run->mmio.data);
744 srcu_read_unlock(&vcpu->kvm->srcu, idx);
747 kvmppc_complete_mmio_load(vcpu, run);
748 vcpu->mmio_needed = 0;
752 return EMULATE_DO_MMIO;
754 EXPORT_SYMBOL_GPL(kvmppc_handle_load);
756 /* Same as above, but sign extends */
757 int kvmppc_handle_loads(struct kvm_run *run, struct kvm_vcpu *vcpu,
758 unsigned int rt, unsigned int bytes,
759 int is_default_endian)
763 vcpu->arch.mmio_sign_extend = 1;
764 r = kvmppc_handle_load(run, vcpu, rt, bytes, is_default_endian);
769 int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
770 u64 val, unsigned int bytes, int is_default_endian)
772 void *data = run->mmio.data;
776 if (kvmppc_need_byteswap(vcpu)) {
777 /* Default endianness is "little endian". */
778 is_bigendian = !is_default_endian;
780 /* Default endianness is "big endian". */
781 is_bigendian = is_default_endian;
784 if (bytes > sizeof(run->mmio.data)) {
785 printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__,
789 run->mmio.phys_addr = vcpu->arch.paddr_accessed;
790 run->mmio.len = bytes;
791 run->mmio.is_write = 1;
792 vcpu->mmio_needed = 1;
793 vcpu->mmio_is_write = 1;
795 /* Store the value at the lowest bytes in 'data'. */
798 case 8: *(u64 *)data = val; break;
799 case 4: *(u32 *)data = val; break;
800 case 2: *(u16 *)data = val; break;
801 case 1: *(u8 *)data = val; break;
804 /* Store LE value into 'data'. */
806 case 4: st_le32(data, val); break;
807 case 2: st_le16(data, val); break;
808 case 1: *(u8 *)data = val; break;
812 idx = srcu_read_lock(&vcpu->kvm->srcu);
814 ret = kvm_io_bus_write(vcpu->kvm, KVM_MMIO_BUS, run->mmio.phys_addr,
815 bytes, &run->mmio.data);
817 srcu_read_unlock(&vcpu->kvm->srcu, idx);
820 vcpu->mmio_needed = 0;
824 return EMULATE_DO_MMIO;
826 EXPORT_SYMBOL_GPL(kvmppc_handle_store);
828 int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run)
833 if (vcpu->sigset_active)
834 sigprocmask(SIG_SETMASK, &vcpu->sigset, &sigsaved);
836 if (vcpu->mmio_needed) {
837 if (!vcpu->mmio_is_write)
838 kvmppc_complete_mmio_load(vcpu, run);
839 vcpu->mmio_needed = 0;
840 } else if (vcpu->arch.dcr_needed) {
841 if (!vcpu->arch.dcr_is_write)
842 kvmppc_complete_dcr_load(vcpu, run);
843 vcpu->arch.dcr_needed = 0;
844 } else if (vcpu->arch.osi_needed) {
845 u64 *gprs = run->osi.gprs;
848 for (i = 0; i < 32; i++)
849 kvmppc_set_gpr(vcpu, i, gprs[i]);
850 vcpu->arch.osi_needed = 0;
851 } else if (vcpu->arch.hcall_needed) {
854 kvmppc_set_gpr(vcpu, 3, run->papr_hcall.ret);
855 for (i = 0; i < 9; ++i)
856 kvmppc_set_gpr(vcpu, 4 + i, run->papr_hcall.args[i]);
857 vcpu->arch.hcall_needed = 0;
859 } else if (vcpu->arch.epr_needed) {
860 kvmppc_set_epr(vcpu, run->epr.epr);
861 vcpu->arch.epr_needed = 0;
865 r = kvmppc_vcpu_run(run, vcpu);
867 if (vcpu->sigset_active)
868 sigprocmask(SIG_SETMASK, &sigsaved, NULL);
873 int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq)
875 if (irq->irq == KVM_INTERRUPT_UNSET) {
876 kvmppc_core_dequeue_external(vcpu);
880 kvmppc_core_queue_external(vcpu, irq);
887 static int kvm_vcpu_ioctl_enable_cap(struct kvm_vcpu *vcpu,
888 struct kvm_enable_cap *cap)
896 case KVM_CAP_PPC_OSI:
898 vcpu->arch.osi_enabled = true;
900 case KVM_CAP_PPC_PAPR:
902 vcpu->arch.papr_enabled = true;
904 case KVM_CAP_PPC_EPR:
907 vcpu->arch.epr_flags |= KVMPPC_EPR_USER;
909 vcpu->arch.epr_flags &= ~KVMPPC_EPR_USER;
912 case KVM_CAP_PPC_BOOKE_WATCHDOG:
914 vcpu->arch.watchdog_enabled = true;
917 #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC)
918 case KVM_CAP_SW_TLB: {
919 struct kvm_config_tlb cfg;
920 void __user *user_ptr = (void __user *)(uintptr_t)cap->args[0];
923 if (copy_from_user(&cfg, user_ptr, sizeof(cfg)))
926 r = kvm_vcpu_ioctl_config_tlb(vcpu, &cfg);
930 #ifdef CONFIG_KVM_MPIC
931 case KVM_CAP_IRQ_MPIC: {
933 struct kvm_device *dev;
936 f = fdget(cap->args[0]);
941 dev = kvm_device_from_filp(f.file);
943 r = kvmppc_mpic_connect_vcpu(dev, vcpu, cap->args[1]);
949 #ifdef CONFIG_KVM_XICS
950 case KVM_CAP_IRQ_XICS: {
952 struct kvm_device *dev;
955 f = fdget(cap->args[0]);
960 dev = kvm_device_from_filp(f.file);
962 r = kvmppc_xics_connect_vcpu(dev, vcpu, cap->args[1]);
967 #endif /* CONFIG_KVM_XICS */
974 r = kvmppc_sanity_check(vcpu);
979 int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu,
980 struct kvm_mp_state *mp_state)
985 int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,
986 struct kvm_mp_state *mp_state)
991 long kvm_arch_vcpu_ioctl(struct file *filp,
992 unsigned int ioctl, unsigned long arg)
994 struct kvm_vcpu *vcpu = filp->private_data;
995 void __user *argp = (void __user *)arg;
999 case KVM_INTERRUPT: {
1000 struct kvm_interrupt irq;
1002 if (copy_from_user(&irq, argp, sizeof(irq)))
1004 r = kvm_vcpu_ioctl_interrupt(vcpu, &irq);
1008 case KVM_ENABLE_CAP:
1010 struct kvm_enable_cap cap;
1012 if (copy_from_user(&cap, argp, sizeof(cap)))
1014 r = kvm_vcpu_ioctl_enable_cap(vcpu, &cap);
1018 case KVM_SET_ONE_REG:
1019 case KVM_GET_ONE_REG:
1021 struct kvm_one_reg reg;
1023 if (copy_from_user(®, argp, sizeof(reg)))
1025 if (ioctl == KVM_SET_ONE_REG)
1026 r = kvm_vcpu_ioctl_set_one_reg(vcpu, ®);
1028 r = kvm_vcpu_ioctl_get_one_reg(vcpu, ®);
1032 #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC)
1033 case KVM_DIRTY_TLB: {
1034 struct kvm_dirty_tlb dirty;
1036 if (copy_from_user(&dirty, argp, sizeof(dirty)))
1038 r = kvm_vcpu_ioctl_dirty_tlb(vcpu, &dirty);
1050 int kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf)
1052 return VM_FAULT_SIGBUS;
1055 static int kvm_vm_ioctl_get_pvinfo(struct kvm_ppc_pvinfo *pvinfo)
1057 u32 inst_nop = 0x60000000;
1058 #ifdef CONFIG_KVM_BOOKE_HV
1059 u32 inst_sc1 = 0x44000022;
1060 pvinfo->hcall[0] = cpu_to_be32(inst_sc1);
1061 pvinfo->hcall[1] = cpu_to_be32(inst_nop);
1062 pvinfo->hcall[2] = cpu_to_be32(inst_nop);
1063 pvinfo->hcall[3] = cpu_to_be32(inst_nop);
1065 u32 inst_lis = 0x3c000000;
1066 u32 inst_ori = 0x60000000;
1067 u32 inst_sc = 0x44000002;
1068 u32 inst_imm_mask = 0xffff;
1071 * The hypercall to get into KVM from within guest context is as
1074 * lis r0, r0, KVM_SC_MAGIC_R0@h
1075 * ori r0, KVM_SC_MAGIC_R0@l
1079 pvinfo->hcall[0] = cpu_to_be32(inst_lis | ((KVM_SC_MAGIC_R0 >> 16) & inst_imm_mask));
1080 pvinfo->hcall[1] = cpu_to_be32(inst_ori | (KVM_SC_MAGIC_R0 & inst_imm_mask));
1081 pvinfo->hcall[2] = cpu_to_be32(inst_sc);
1082 pvinfo->hcall[3] = cpu_to_be32(inst_nop);
1085 pvinfo->flags = KVM_PPC_PVINFO_FLAGS_EV_IDLE;
1090 int kvm_vm_ioctl_irq_line(struct kvm *kvm, struct kvm_irq_level *irq_event,
1093 if (!irqchip_in_kernel(kvm))
1096 irq_event->status = kvm_set_irq(kvm, KVM_USERSPACE_IRQ_SOURCE_ID,
1097 irq_event->irq, irq_event->level,
1102 long kvm_arch_vm_ioctl(struct file *filp,
1103 unsigned int ioctl, unsigned long arg)
1105 struct kvm *kvm __maybe_unused = filp->private_data;
1106 void __user *argp = (void __user *)arg;
1110 case KVM_PPC_GET_PVINFO: {
1111 struct kvm_ppc_pvinfo pvinfo;
1112 memset(&pvinfo, 0, sizeof(pvinfo));
1113 r = kvm_vm_ioctl_get_pvinfo(&pvinfo);
1114 if (copy_to_user(argp, &pvinfo, sizeof(pvinfo))) {
1121 #ifdef CONFIG_PPC_BOOK3S_64
1122 case KVM_CREATE_SPAPR_TCE: {
1123 struct kvm_create_spapr_tce create_tce;
1126 if (copy_from_user(&create_tce, argp, sizeof(create_tce)))
1128 r = kvm_vm_ioctl_create_spapr_tce(kvm, &create_tce);
1131 case KVM_PPC_GET_SMMU_INFO: {
1132 struct kvm_ppc_smmu_info info;
1133 struct kvm *kvm = filp->private_data;
1135 memset(&info, 0, sizeof(info));
1136 r = kvm->arch.kvm_ops->get_smmu_info(kvm, &info);
1137 if (r >= 0 && copy_to_user(argp, &info, sizeof(info)))
1141 case KVM_PPC_RTAS_DEFINE_TOKEN: {
1142 struct kvm *kvm = filp->private_data;
1144 r = kvm_vm_ioctl_rtas_define_token(kvm, argp);
1148 struct kvm *kvm = filp->private_data;
1149 r = kvm->arch.kvm_ops->arch_vm_ioctl(filp, ioctl, arg);
1151 #else /* CONFIG_PPC_BOOK3S_64 */
1160 static unsigned long lpid_inuse[BITS_TO_LONGS(KVMPPC_NR_LPIDS)];
1161 static unsigned long nr_lpids;
1163 long kvmppc_alloc_lpid(void)
1168 lpid = find_first_zero_bit(lpid_inuse, KVMPPC_NR_LPIDS);
1169 if (lpid >= nr_lpids) {
1170 pr_err("%s: No LPIDs free\n", __func__);
1173 } while (test_and_set_bit(lpid, lpid_inuse));
1177 EXPORT_SYMBOL_GPL(kvmppc_alloc_lpid);
1179 void kvmppc_claim_lpid(long lpid)
1181 set_bit(lpid, lpid_inuse);
1183 EXPORT_SYMBOL_GPL(kvmppc_claim_lpid);
1185 void kvmppc_free_lpid(long lpid)
1187 clear_bit(lpid, lpid_inuse);
1189 EXPORT_SYMBOL_GPL(kvmppc_free_lpid);
1191 void kvmppc_init_lpid(unsigned long nr_lpids_param)
1193 nr_lpids = min_t(unsigned long, KVMPPC_NR_LPIDS, nr_lpids_param);
1194 memset(lpid_inuse, 0, sizeof(lpid_inuse));
1196 EXPORT_SYMBOL_GPL(kvmppc_init_lpid);
1198 int kvm_arch_init(void *opaque)
1203 void kvm_arch_exit(void)