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 int kvmppc_kvm_pv(struct kvm_vcpu *vcpu)
130 int nr = kvmppc_get_gpr(vcpu, 11);
132 unsigned long __maybe_unused param1 = kvmppc_get_gpr(vcpu, 3);
133 unsigned long __maybe_unused param2 = kvmppc_get_gpr(vcpu, 4);
134 unsigned long __maybe_unused param3 = kvmppc_get_gpr(vcpu, 5);
135 unsigned long __maybe_unused param4 = kvmppc_get_gpr(vcpu, 6);
136 unsigned long r2 = 0;
138 if (!(vcpu->arch.shared->msr & MSR_SF)) {
140 param1 &= 0xffffffff;
141 param2 &= 0xffffffff;
142 param3 &= 0xffffffff;
143 param4 &= 0xffffffff;
147 case KVM_HCALL_TOKEN(KVM_HC_PPC_MAP_MAGIC_PAGE):
149 vcpu->arch.magic_page_pa = param1;
150 vcpu->arch.magic_page_ea = param2;
152 r2 = KVM_MAGIC_FEAT_SR | KVM_MAGIC_FEAT_MAS0_TO_SPRG7;
157 case KVM_HCALL_TOKEN(KVM_HC_FEATURES):
159 #if defined(CONFIG_PPC_BOOK3S) || defined(CONFIG_KVM_E500V2)
160 /* XXX Missing magic page on 44x */
161 r2 |= (1 << KVM_FEATURE_MAGIC_PAGE);
164 /* Second return value is in r4 */
166 case EV_HCALL_TOKEN(EV_IDLE):
168 kvm_vcpu_block(vcpu);
169 clear_bit(KVM_REQ_UNHALT, &vcpu->requests);
172 r = EV_UNIMPLEMENTED;
176 kvmppc_set_gpr(vcpu, 4, r2);
180 EXPORT_SYMBOL_GPL(kvmppc_kvm_pv);
182 int kvmppc_sanity_check(struct kvm_vcpu *vcpu)
186 /* We have to know what CPU to virtualize */
190 /* PAPR only works with book3s_64 */
191 if ((vcpu->arch.cpu_type != KVM_CPU_3S_64) && vcpu->arch.papr_enabled)
194 /* HV KVM can only do PAPR mode for now */
195 if (!vcpu->arch.papr_enabled && is_kvmppc_hv_enabled(vcpu->kvm))
198 #ifdef CONFIG_KVM_BOOKE_HV
199 if (!cpu_has_feature(CPU_FTR_EMB_HV))
207 return r ? 0 : -EINVAL;
209 EXPORT_SYMBOL_GPL(kvmppc_sanity_check);
211 int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu)
213 enum emulation_result er;
216 er = kvmppc_emulate_instruction(run, vcpu);
219 /* Future optimization: only reload non-volatiles if they were
220 * actually modified. */
223 case EMULATE_DO_MMIO:
224 run->exit_reason = KVM_EXIT_MMIO;
225 /* We must reload nonvolatiles because "update" load/store
226 * instructions modify register state. */
227 /* Future optimization: only reload non-volatiles if they were
228 * actually modified. */
232 /* XXX Deliver Program interrupt to guest. */
233 printk(KERN_EMERG "%s: emulation failed (%08x)\n", __func__,
234 kvmppc_get_last_inst(vcpu));
244 EXPORT_SYMBOL_GPL(kvmppc_emulate_mmio);
246 int kvm_arch_hardware_enable(void *garbage)
251 void kvm_arch_hardware_disable(void *garbage)
255 int kvm_arch_hardware_setup(void)
260 void kvm_arch_hardware_unsetup(void)
264 void kvm_arch_check_processor_compat(void *rtn)
266 *(int *)rtn = kvmppc_core_check_processor_compat();
269 int kvm_arch_init_vm(struct kvm *kvm, unsigned long type)
271 struct kvmppc_ops *kvm_ops = NULL;
273 * if we have both HV and PR enabled, default is HV
277 kvm_ops = kvmppc_hv_ops;
279 kvm_ops = kvmppc_pr_ops;
282 } else if (type == KVM_VM_PPC_HV) {
285 kvm_ops = kvmppc_hv_ops;
286 } else if (type == KVM_VM_PPC_PR) {
289 kvm_ops = kvmppc_pr_ops;
293 if (kvm_ops->owner && !try_module_get(kvm_ops->owner))
296 kvm->arch.kvm_ops = kvm_ops;
297 return kvmppc_core_init_vm(kvm);
302 void kvm_arch_destroy_vm(struct kvm *kvm)
305 struct kvm_vcpu *vcpu;
307 kvm_for_each_vcpu(i, vcpu, kvm)
308 kvm_arch_vcpu_free(vcpu);
310 mutex_lock(&kvm->lock);
311 for (i = 0; i < atomic_read(&kvm->online_vcpus); i++)
312 kvm->vcpus[i] = NULL;
314 atomic_set(&kvm->online_vcpus, 0);
316 kvmppc_core_destroy_vm(kvm);
318 mutex_unlock(&kvm->lock);
320 /* drop the module reference */
321 module_put(kvm->arch.kvm_ops->owner);
324 void kvm_arch_sync_events(struct kvm *kvm)
328 int kvm_dev_ioctl_check_extension(long ext)
332 * Should some of this be vm ioctl ? is it possible now ?
334 int hv_enabled = kvmppc_hv_ops ? 1 : 0;
338 case KVM_CAP_PPC_BOOKE_SREGS:
339 case KVM_CAP_PPC_BOOKE_WATCHDOG:
340 case KVM_CAP_PPC_EPR:
342 case KVM_CAP_PPC_SEGSTATE:
343 case KVM_CAP_PPC_HIOR:
344 case KVM_CAP_PPC_PAPR:
346 case KVM_CAP_PPC_UNSET_IRQ:
347 case KVM_CAP_PPC_IRQ_LEVEL:
348 case KVM_CAP_ENABLE_CAP:
349 case KVM_CAP_ONE_REG:
350 case KVM_CAP_IOEVENTFD:
351 case KVM_CAP_DEVICE_CTRL:
354 case KVM_CAP_PPC_PAIRED_SINGLES:
355 case KVM_CAP_PPC_OSI:
356 case KVM_CAP_PPC_GET_PVINFO:
357 #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC)
360 /* We support this only for PR */
363 #ifdef CONFIG_KVM_MMIO
364 case KVM_CAP_COALESCED_MMIO:
365 r = KVM_COALESCED_MMIO_PAGE_OFFSET;
368 #ifdef CONFIG_KVM_MPIC
369 case KVM_CAP_IRQ_MPIC:
374 #ifdef CONFIG_PPC_BOOK3S_64
375 case KVM_CAP_SPAPR_TCE:
376 case KVM_CAP_PPC_ALLOC_HTAB:
377 case KVM_CAP_PPC_RTAS:
378 #ifdef CONFIG_KVM_XICS
379 case KVM_CAP_IRQ_XICS:
383 #endif /* CONFIG_PPC_BOOK3S_64 */
384 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
385 case KVM_CAP_PPC_SMT:
387 r = threads_per_core;
391 case KVM_CAP_PPC_RMA:
393 /* PPC970 requires an RMA */
394 if (r && cpu_has_feature(CPU_FTR_ARCH_201))
398 case KVM_CAP_SYNC_MMU:
399 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
401 r = cpu_has_feature(CPU_FTR_ARCH_206) ? 1 : 0;
404 #elif defined(KVM_ARCH_WANT_MMU_NOTIFIER)
410 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
411 case KVM_CAP_PPC_HTAB_FD:
415 case KVM_CAP_NR_VCPUS:
417 * Recommending a number of CPUs is somewhat arbitrary; we
418 * return the number of present CPUs for -HV (since a host
419 * will have secondary threads "offline"), and for other KVM
420 * implementations just count online CPUs.
423 r = num_present_cpus();
425 r = num_online_cpus();
427 case KVM_CAP_MAX_VCPUS:
430 #ifdef CONFIG_PPC_BOOK3S_64
431 case KVM_CAP_PPC_GET_SMMU_INFO:
443 long kvm_arch_dev_ioctl(struct file *filp,
444 unsigned int ioctl, unsigned long arg)
449 void kvm_arch_free_memslot(struct kvm *kvm, struct kvm_memory_slot *free,
450 struct kvm_memory_slot *dont)
452 kvmppc_core_free_memslot(kvm, free, dont);
455 int kvm_arch_create_memslot(struct kvm *kvm, struct kvm_memory_slot *slot,
456 unsigned long npages)
458 return kvmppc_core_create_memslot(kvm, slot, npages);
461 void kvm_arch_memslots_updated(struct kvm *kvm)
465 int kvm_arch_prepare_memory_region(struct kvm *kvm,
466 struct kvm_memory_slot *memslot,
467 struct kvm_userspace_memory_region *mem,
468 enum kvm_mr_change change)
470 return kvmppc_core_prepare_memory_region(kvm, memslot, mem);
473 void kvm_arch_commit_memory_region(struct kvm *kvm,
474 struct kvm_userspace_memory_region *mem,
475 const struct kvm_memory_slot *old,
476 enum kvm_mr_change change)
478 kvmppc_core_commit_memory_region(kvm, mem, old);
481 void kvm_arch_flush_shadow_all(struct kvm *kvm)
485 void kvm_arch_flush_shadow_memslot(struct kvm *kvm,
486 struct kvm_memory_slot *slot)
488 kvmppc_core_flush_memslot(kvm, slot);
491 struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id)
493 struct kvm_vcpu *vcpu;
494 vcpu = kvmppc_core_vcpu_create(kvm, id);
496 vcpu->arch.wqp = &vcpu->wq;
497 kvmppc_create_vcpu_debugfs(vcpu, id);
502 int kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu)
507 void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu)
509 /* Make sure we're not using the vcpu anymore */
510 hrtimer_cancel(&vcpu->arch.dec_timer);
511 tasklet_kill(&vcpu->arch.tasklet);
513 kvmppc_remove_vcpu_debugfs(vcpu);
515 switch (vcpu->arch.irq_type) {
516 case KVMPPC_IRQ_MPIC:
517 kvmppc_mpic_disconnect_vcpu(vcpu->arch.mpic, vcpu);
519 case KVMPPC_IRQ_XICS:
520 kvmppc_xics_free_icp(vcpu);
524 kvmppc_core_vcpu_free(vcpu);
527 void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu)
529 kvm_arch_vcpu_free(vcpu);
532 int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu)
534 return kvmppc_core_pending_dec(vcpu);
538 * low level hrtimer wake routine. Because this runs in hardirq context
539 * we schedule a tasklet to do the real work.
541 enum hrtimer_restart kvmppc_decrementer_wakeup(struct hrtimer *timer)
543 struct kvm_vcpu *vcpu;
545 vcpu = container_of(timer, struct kvm_vcpu, arch.dec_timer);
546 tasklet_schedule(&vcpu->arch.tasklet);
548 return HRTIMER_NORESTART;
551 int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu)
555 hrtimer_init(&vcpu->arch.dec_timer, CLOCK_REALTIME, HRTIMER_MODE_ABS);
556 tasklet_init(&vcpu->arch.tasklet, kvmppc_decrementer_func, (ulong)vcpu);
557 vcpu->arch.dec_timer.function = kvmppc_decrementer_wakeup;
558 vcpu->arch.dec_expires = ~(u64)0;
560 #ifdef CONFIG_KVM_EXIT_TIMING
561 mutex_init(&vcpu->arch.exit_timing_lock);
563 ret = kvmppc_subarch_vcpu_init(vcpu);
567 void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu)
569 kvmppc_mmu_destroy(vcpu);
570 kvmppc_subarch_vcpu_uninit(vcpu);
573 void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
577 * vrsave (formerly usprg0) isn't used by Linux, but may
578 * be used by the guest.
580 * On non-booke this is associated with Altivec and
581 * is handled by code in book3s.c.
583 mtspr(SPRN_VRSAVE, vcpu->arch.vrsave);
585 kvmppc_core_vcpu_load(vcpu, cpu);
588 void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu)
590 kvmppc_core_vcpu_put(vcpu);
592 vcpu->arch.vrsave = mfspr(SPRN_VRSAVE);
596 static void kvmppc_complete_dcr_load(struct kvm_vcpu *vcpu,
599 kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, run->dcr.data);
602 static void kvmppc_complete_mmio_load(struct kvm_vcpu *vcpu,
605 u64 uninitialized_var(gpr);
607 if (run->mmio.len > sizeof(gpr)) {
608 printk(KERN_ERR "bad MMIO length: %d\n", run->mmio.len);
612 if (vcpu->arch.mmio_is_bigendian) {
613 switch (run->mmio.len) {
614 case 8: gpr = *(u64 *)run->mmio.data; break;
615 case 4: gpr = *(u32 *)run->mmio.data; break;
616 case 2: gpr = *(u16 *)run->mmio.data; break;
617 case 1: gpr = *(u8 *)run->mmio.data; break;
620 /* Convert BE data from userland back to LE. */
621 switch (run->mmio.len) {
622 case 4: gpr = ld_le32((u32 *)run->mmio.data); break;
623 case 2: gpr = ld_le16((u16 *)run->mmio.data); break;
624 case 1: gpr = *(u8 *)run->mmio.data; break;
628 if (vcpu->arch.mmio_sign_extend) {
629 switch (run->mmio.len) {
644 kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, gpr);
646 switch (vcpu->arch.io_gpr & KVM_MMIO_REG_EXT_MASK) {
647 case KVM_MMIO_REG_GPR:
648 kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, gpr);
650 case KVM_MMIO_REG_FPR:
651 VCPU_FPR(vcpu, vcpu->arch.io_gpr & KVM_MMIO_REG_MASK) = gpr;
653 #ifdef CONFIG_PPC_BOOK3S
654 case KVM_MMIO_REG_QPR:
655 vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr;
657 case KVM_MMIO_REG_FQPR:
658 VCPU_FPR(vcpu, vcpu->arch.io_gpr & KVM_MMIO_REG_MASK) = gpr;
659 vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr;
667 int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
668 unsigned int rt, unsigned int bytes,
669 int is_default_endian)
674 if (kvmppc_need_byteswap(vcpu)) {
675 /* Default endianness is "little endian". */
676 is_bigendian = !is_default_endian;
678 /* Default endianness is "big endian". */
679 is_bigendian = is_default_endian;
682 if (bytes > sizeof(run->mmio.data)) {
683 printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__,
687 run->mmio.phys_addr = vcpu->arch.paddr_accessed;
688 run->mmio.len = bytes;
689 run->mmio.is_write = 0;
691 vcpu->arch.io_gpr = rt;
692 vcpu->arch.mmio_is_bigendian = is_bigendian;
693 vcpu->mmio_needed = 1;
694 vcpu->mmio_is_write = 0;
695 vcpu->arch.mmio_sign_extend = 0;
697 idx = srcu_read_lock(&vcpu->kvm->srcu);
699 ret = kvm_io_bus_read(vcpu->kvm, KVM_MMIO_BUS, run->mmio.phys_addr,
700 bytes, &run->mmio.data);
702 srcu_read_unlock(&vcpu->kvm->srcu, idx);
705 kvmppc_complete_mmio_load(vcpu, run);
706 vcpu->mmio_needed = 0;
710 return EMULATE_DO_MMIO;
712 EXPORT_SYMBOL_GPL(kvmppc_handle_load);
714 /* Same as above, but sign extends */
715 int kvmppc_handle_loads(struct kvm_run *run, struct kvm_vcpu *vcpu,
716 unsigned int rt, unsigned int bytes,
717 int is_default_endian)
721 vcpu->arch.mmio_sign_extend = 1;
722 r = kvmppc_handle_load(run, vcpu, rt, bytes, is_default_endian);
727 int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
728 u64 val, unsigned int bytes, int is_default_endian)
730 void *data = run->mmio.data;
734 if (kvmppc_need_byteswap(vcpu)) {
735 /* Default endianness is "little endian". */
736 is_bigendian = !is_default_endian;
738 /* Default endianness is "big endian". */
739 is_bigendian = is_default_endian;
742 if (bytes > sizeof(run->mmio.data)) {
743 printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__,
747 run->mmio.phys_addr = vcpu->arch.paddr_accessed;
748 run->mmio.len = bytes;
749 run->mmio.is_write = 1;
750 vcpu->mmio_needed = 1;
751 vcpu->mmio_is_write = 1;
753 /* Store the value at the lowest bytes in 'data'. */
756 case 8: *(u64 *)data = val; break;
757 case 4: *(u32 *)data = val; break;
758 case 2: *(u16 *)data = val; break;
759 case 1: *(u8 *)data = val; break;
762 /* Store LE value into 'data'. */
764 case 4: st_le32(data, val); break;
765 case 2: st_le16(data, val); break;
766 case 1: *(u8 *)data = val; break;
770 idx = srcu_read_lock(&vcpu->kvm->srcu);
772 ret = kvm_io_bus_write(vcpu->kvm, KVM_MMIO_BUS, run->mmio.phys_addr,
773 bytes, &run->mmio.data);
775 srcu_read_unlock(&vcpu->kvm->srcu, idx);
778 vcpu->mmio_needed = 0;
782 return EMULATE_DO_MMIO;
784 EXPORT_SYMBOL_GPL(kvmppc_handle_store);
786 int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run)
791 if (vcpu->sigset_active)
792 sigprocmask(SIG_SETMASK, &vcpu->sigset, &sigsaved);
794 if (vcpu->mmio_needed) {
795 if (!vcpu->mmio_is_write)
796 kvmppc_complete_mmio_load(vcpu, run);
797 vcpu->mmio_needed = 0;
798 } else if (vcpu->arch.dcr_needed) {
799 if (!vcpu->arch.dcr_is_write)
800 kvmppc_complete_dcr_load(vcpu, run);
801 vcpu->arch.dcr_needed = 0;
802 } else if (vcpu->arch.osi_needed) {
803 u64 *gprs = run->osi.gprs;
806 for (i = 0; i < 32; i++)
807 kvmppc_set_gpr(vcpu, i, gprs[i]);
808 vcpu->arch.osi_needed = 0;
809 } else if (vcpu->arch.hcall_needed) {
812 kvmppc_set_gpr(vcpu, 3, run->papr_hcall.ret);
813 for (i = 0; i < 9; ++i)
814 kvmppc_set_gpr(vcpu, 4 + i, run->papr_hcall.args[i]);
815 vcpu->arch.hcall_needed = 0;
817 } else if (vcpu->arch.epr_needed) {
818 kvmppc_set_epr(vcpu, run->epr.epr);
819 vcpu->arch.epr_needed = 0;
823 r = kvmppc_vcpu_run(run, vcpu);
825 if (vcpu->sigset_active)
826 sigprocmask(SIG_SETMASK, &sigsaved, NULL);
831 int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq)
833 if (irq->irq == KVM_INTERRUPT_UNSET) {
834 kvmppc_core_dequeue_external(vcpu);
838 kvmppc_core_queue_external(vcpu, irq);
845 static int kvm_vcpu_ioctl_enable_cap(struct kvm_vcpu *vcpu,
846 struct kvm_enable_cap *cap)
854 case KVM_CAP_PPC_OSI:
856 vcpu->arch.osi_enabled = true;
858 case KVM_CAP_PPC_PAPR:
860 vcpu->arch.papr_enabled = true;
862 case KVM_CAP_PPC_EPR:
865 vcpu->arch.epr_flags |= KVMPPC_EPR_USER;
867 vcpu->arch.epr_flags &= ~KVMPPC_EPR_USER;
870 case KVM_CAP_PPC_BOOKE_WATCHDOG:
872 vcpu->arch.watchdog_enabled = true;
875 #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC)
876 case KVM_CAP_SW_TLB: {
877 struct kvm_config_tlb cfg;
878 void __user *user_ptr = (void __user *)(uintptr_t)cap->args[0];
881 if (copy_from_user(&cfg, user_ptr, sizeof(cfg)))
884 r = kvm_vcpu_ioctl_config_tlb(vcpu, &cfg);
888 #ifdef CONFIG_KVM_MPIC
889 case KVM_CAP_IRQ_MPIC: {
891 struct kvm_device *dev;
894 f = fdget(cap->args[0]);
899 dev = kvm_device_from_filp(f.file);
901 r = kvmppc_mpic_connect_vcpu(dev, vcpu, cap->args[1]);
907 #ifdef CONFIG_KVM_XICS
908 case KVM_CAP_IRQ_XICS: {
910 struct kvm_device *dev;
913 f = fdget(cap->args[0]);
918 dev = kvm_device_from_filp(f.file);
920 r = kvmppc_xics_connect_vcpu(dev, vcpu, cap->args[1]);
925 #endif /* CONFIG_KVM_XICS */
932 r = kvmppc_sanity_check(vcpu);
937 int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu,
938 struct kvm_mp_state *mp_state)
943 int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,
944 struct kvm_mp_state *mp_state)
949 long kvm_arch_vcpu_ioctl(struct file *filp,
950 unsigned int ioctl, unsigned long arg)
952 struct kvm_vcpu *vcpu = filp->private_data;
953 void __user *argp = (void __user *)arg;
957 case KVM_INTERRUPT: {
958 struct kvm_interrupt irq;
960 if (copy_from_user(&irq, argp, sizeof(irq)))
962 r = kvm_vcpu_ioctl_interrupt(vcpu, &irq);
968 struct kvm_enable_cap cap;
970 if (copy_from_user(&cap, argp, sizeof(cap)))
972 r = kvm_vcpu_ioctl_enable_cap(vcpu, &cap);
976 case KVM_SET_ONE_REG:
977 case KVM_GET_ONE_REG:
979 struct kvm_one_reg reg;
981 if (copy_from_user(®, argp, sizeof(reg)))
983 if (ioctl == KVM_SET_ONE_REG)
984 r = kvm_vcpu_ioctl_set_one_reg(vcpu, ®);
986 r = kvm_vcpu_ioctl_get_one_reg(vcpu, ®);
990 #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC)
991 case KVM_DIRTY_TLB: {
992 struct kvm_dirty_tlb dirty;
994 if (copy_from_user(&dirty, argp, sizeof(dirty)))
996 r = kvm_vcpu_ioctl_dirty_tlb(vcpu, &dirty);
1008 int kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf)
1010 return VM_FAULT_SIGBUS;
1013 static int kvm_vm_ioctl_get_pvinfo(struct kvm_ppc_pvinfo *pvinfo)
1015 u32 inst_nop = 0x60000000;
1016 #ifdef CONFIG_KVM_BOOKE_HV
1017 u32 inst_sc1 = 0x44000022;
1018 pvinfo->hcall[0] = inst_sc1;
1019 pvinfo->hcall[1] = inst_nop;
1020 pvinfo->hcall[2] = inst_nop;
1021 pvinfo->hcall[3] = inst_nop;
1023 u32 inst_lis = 0x3c000000;
1024 u32 inst_ori = 0x60000000;
1025 u32 inst_sc = 0x44000002;
1026 u32 inst_imm_mask = 0xffff;
1029 * The hypercall to get into KVM from within guest context is as
1032 * lis r0, r0, KVM_SC_MAGIC_R0@h
1033 * ori r0, KVM_SC_MAGIC_R0@l
1037 pvinfo->hcall[0] = inst_lis | ((KVM_SC_MAGIC_R0 >> 16) & inst_imm_mask);
1038 pvinfo->hcall[1] = inst_ori | (KVM_SC_MAGIC_R0 & inst_imm_mask);
1039 pvinfo->hcall[2] = inst_sc;
1040 pvinfo->hcall[3] = inst_nop;
1043 pvinfo->flags = KVM_PPC_PVINFO_FLAGS_EV_IDLE;
1048 int kvm_vm_ioctl_irq_line(struct kvm *kvm, struct kvm_irq_level *irq_event,
1051 if (!irqchip_in_kernel(kvm))
1054 irq_event->status = kvm_set_irq(kvm, KVM_USERSPACE_IRQ_SOURCE_ID,
1055 irq_event->irq, irq_event->level,
1060 long kvm_arch_vm_ioctl(struct file *filp,
1061 unsigned int ioctl, unsigned long arg)
1063 struct kvm *kvm __maybe_unused = filp->private_data;
1064 void __user *argp = (void __user *)arg;
1068 case KVM_PPC_GET_PVINFO: {
1069 struct kvm_ppc_pvinfo pvinfo;
1070 memset(&pvinfo, 0, sizeof(pvinfo));
1071 r = kvm_vm_ioctl_get_pvinfo(&pvinfo);
1072 if (copy_to_user(argp, &pvinfo, sizeof(pvinfo))) {
1079 #ifdef CONFIG_PPC_BOOK3S_64
1080 case KVM_CREATE_SPAPR_TCE: {
1081 struct kvm_create_spapr_tce create_tce;
1084 if (copy_from_user(&create_tce, argp, sizeof(create_tce)))
1086 r = kvm_vm_ioctl_create_spapr_tce(kvm, &create_tce);
1089 case KVM_PPC_GET_SMMU_INFO: {
1090 struct kvm_ppc_smmu_info info;
1091 struct kvm *kvm = filp->private_data;
1093 memset(&info, 0, sizeof(info));
1094 r = kvm->arch.kvm_ops->get_smmu_info(kvm, &info);
1095 if (r >= 0 && copy_to_user(argp, &info, sizeof(info)))
1099 case KVM_PPC_RTAS_DEFINE_TOKEN: {
1100 struct kvm *kvm = filp->private_data;
1102 r = kvm_vm_ioctl_rtas_define_token(kvm, argp);
1106 struct kvm *kvm = filp->private_data;
1107 r = kvm->arch.kvm_ops->arch_vm_ioctl(filp, ioctl, arg);
1109 #else /* CONFIG_PPC_BOOK3S_64 */
1118 static unsigned long lpid_inuse[BITS_TO_LONGS(KVMPPC_NR_LPIDS)];
1119 static unsigned long nr_lpids;
1121 long kvmppc_alloc_lpid(void)
1126 lpid = find_first_zero_bit(lpid_inuse, KVMPPC_NR_LPIDS);
1127 if (lpid >= nr_lpids) {
1128 pr_err("%s: No LPIDs free\n", __func__);
1131 } while (test_and_set_bit(lpid, lpid_inuse));
1135 EXPORT_SYMBOL_GPL(kvmppc_alloc_lpid);
1137 void kvmppc_claim_lpid(long lpid)
1139 set_bit(lpid, lpid_inuse);
1141 EXPORT_SYMBOL_GPL(kvmppc_claim_lpid);
1143 void kvmppc_free_lpid(long lpid)
1145 clear_bit(lpid, lpid_inuse);
1147 EXPORT_SYMBOL_GPL(kvmppc_free_lpid);
1149 void kvmppc_init_lpid(unsigned long nr_lpids_param)
1151 nr_lpids = min_t(unsigned long, KVMPPC_NR_LPIDS, nr_lpids_param);
1152 memset(lpid_inuse, 0, sizeof(lpid_inuse));
1154 EXPORT_SYMBOL_GPL(kvmppc_init_lpid);
1156 int kvm_arch_init(void *opaque)
1161 void kvm_arch_exit(void)