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 <asm/cputable.h>
30 #include <asm/uaccess.h>
31 #include <asm/kvm_ppc.h>
32 #include <asm/tlbflush.h>
33 #include <asm/cputhreads.h>
34 #include <asm/irqflags.h>
37 #include "../mm/mmu_decl.h"
39 #define CREATE_TRACE_POINTS
42 int kvm_arch_vcpu_runnable(struct kvm_vcpu *v)
44 return !!(v->arch.pending_exceptions) ||
48 int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu)
53 #ifndef CONFIG_KVM_BOOK3S_64_HV
55 * Common checks before entering the guest world. Call with interrupts
60 * == 1 if we're ready to go into guest state
61 * <= 0 if we need to go back to the host with return value
63 int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu)
67 WARN_ON_ONCE(!irqs_disabled());
76 if (signal_pending(current)) {
77 kvmppc_account_exit(vcpu, SIGNAL_EXITS);
78 vcpu->run->exit_reason = KVM_EXIT_INTR;
83 vcpu->mode = IN_GUEST_MODE;
86 * Reading vcpu->requests must happen after setting vcpu->mode,
87 * so we don't miss a request because the requester sees
88 * OUTSIDE_GUEST_MODE and assumes we'll be checking requests
89 * before next entering the guest (and thus doesn't IPI).
94 /* Make sure we process requests preemptable */
96 trace_kvm_check_requests(vcpu);
97 r = kvmppc_core_check_requests(vcpu);
104 if (kvmppc_core_prepare_to_enter(vcpu)) {
105 /* interrupts got enabled in between, so we
106 are back at square 1 */
113 if (lazy_irq_pending()) {
114 /* Got an interrupt in between, try again */
130 #endif /* CONFIG_KVM_BOOK3S_64_HV */
132 int kvmppc_kvm_pv(struct kvm_vcpu *vcpu)
134 int nr = kvmppc_get_gpr(vcpu, 11);
136 unsigned long __maybe_unused param1 = kvmppc_get_gpr(vcpu, 3);
137 unsigned long __maybe_unused param2 = kvmppc_get_gpr(vcpu, 4);
138 unsigned long __maybe_unused param3 = kvmppc_get_gpr(vcpu, 5);
139 unsigned long __maybe_unused param4 = kvmppc_get_gpr(vcpu, 6);
140 unsigned long r2 = 0;
142 if (!(vcpu->arch.shared->msr & MSR_SF)) {
144 param1 &= 0xffffffff;
145 param2 &= 0xffffffff;
146 param3 &= 0xffffffff;
147 param4 &= 0xffffffff;
151 case KVM_HCALL_TOKEN(KVM_HC_PPC_MAP_MAGIC_PAGE):
153 vcpu->arch.magic_page_pa = param1;
154 vcpu->arch.magic_page_ea = param2;
156 r2 = KVM_MAGIC_FEAT_SR | KVM_MAGIC_FEAT_MAS0_TO_SPRG7;
161 case KVM_HCALL_TOKEN(KVM_HC_FEATURES):
163 #if defined(CONFIG_PPC_BOOK3S) || defined(CONFIG_KVM_E500V2)
164 /* XXX Missing magic page on 44x */
165 r2 |= (1 << KVM_FEATURE_MAGIC_PAGE);
168 /* Second return value is in r4 */
170 case EV_HCALL_TOKEN(EV_IDLE):
172 kvm_vcpu_block(vcpu);
173 clear_bit(KVM_REQ_UNHALT, &vcpu->requests);
176 r = EV_UNIMPLEMENTED;
180 kvmppc_set_gpr(vcpu, 4, r2);
185 int kvmppc_sanity_check(struct kvm_vcpu *vcpu)
189 /* We have to know what CPU to virtualize */
193 /* PAPR only works with book3s_64 */
194 if ((vcpu->arch.cpu_type != KVM_CPU_3S_64) && vcpu->arch.papr_enabled)
197 #ifdef CONFIG_KVM_BOOK3S_64_HV
198 /* HV KVM can only do PAPR mode for now */
199 if (!vcpu->arch.papr_enabled)
203 #ifdef CONFIG_KVM_BOOKE_HV
204 if (!cpu_has_feature(CPU_FTR_EMB_HV))
212 return r ? 0 : -EINVAL;
215 int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu)
217 enum emulation_result er;
220 er = kvmppc_emulate_instruction(run, vcpu);
223 /* Future optimization: only reload non-volatiles if they were
224 * actually modified. */
227 case EMULATE_DO_MMIO:
228 run->exit_reason = KVM_EXIT_MMIO;
229 /* We must reload nonvolatiles because "update" load/store
230 * instructions modify register state. */
231 /* Future optimization: only reload non-volatiles if they were
232 * actually modified. */
236 /* XXX Deliver Program interrupt to guest. */
237 printk(KERN_EMERG "%s: emulation failed (%08x)\n", __func__,
238 kvmppc_get_last_inst(vcpu));
249 int kvm_arch_hardware_enable(void)
254 int kvm_arch_hardware_setup(void)
259 void kvm_arch_check_processor_compat(void *rtn)
261 *(int *)rtn = kvmppc_core_check_processor_compat();
264 int kvm_arch_init_vm(struct kvm *kvm, unsigned long type)
269 return kvmppc_core_init_vm(kvm);
272 void kvm_arch_destroy_vm(struct kvm *kvm)
275 struct kvm_vcpu *vcpu;
277 kvm_for_each_vcpu(i, vcpu, kvm)
278 kvm_arch_vcpu_free(vcpu);
280 mutex_lock(&kvm->lock);
281 for (i = 0; i < atomic_read(&kvm->online_vcpus); i++)
282 kvm->vcpus[i] = NULL;
284 atomic_set(&kvm->online_vcpus, 0);
286 kvmppc_core_destroy_vm(kvm);
288 mutex_unlock(&kvm->lock);
291 int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext)
297 case KVM_CAP_PPC_BOOKE_SREGS:
298 case KVM_CAP_PPC_BOOKE_WATCHDOG:
299 case KVM_CAP_PPC_EPR:
301 case KVM_CAP_PPC_SEGSTATE:
302 case KVM_CAP_PPC_HIOR:
303 case KVM_CAP_PPC_PAPR:
305 case KVM_CAP_PPC_UNSET_IRQ:
306 case KVM_CAP_PPC_IRQ_LEVEL:
307 case KVM_CAP_ENABLE_CAP:
308 case KVM_CAP_ONE_REG:
309 case KVM_CAP_IOEVENTFD:
310 case KVM_CAP_DEVICE_CTRL:
313 #ifndef CONFIG_KVM_BOOK3S_64_HV
314 case KVM_CAP_PPC_PAIRED_SINGLES:
315 case KVM_CAP_PPC_OSI:
316 case KVM_CAP_PPC_GET_PVINFO:
317 #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC)
320 #ifdef CONFIG_KVM_MPIC
321 case KVM_CAP_IRQ_MPIC:
325 case KVM_CAP_COALESCED_MMIO:
326 r = KVM_COALESCED_MMIO_PAGE_OFFSET;
329 #ifdef CONFIG_PPC_BOOK3S_64
330 case KVM_CAP_SPAPR_TCE:
331 case KVM_CAP_PPC_ALLOC_HTAB:
332 case KVM_CAP_PPC_RTAS:
333 #ifdef CONFIG_KVM_XICS
334 case KVM_CAP_IRQ_XICS:
338 #endif /* CONFIG_PPC_BOOK3S_64 */
339 #ifdef CONFIG_KVM_BOOK3S_64_HV
340 case KVM_CAP_PPC_SMT:
341 r = threads_per_core;
343 case KVM_CAP_PPC_RMA:
345 /* PPC970 requires an RMA */
346 if (cpu_has_feature(CPU_FTR_ARCH_201))
350 case KVM_CAP_SYNC_MMU:
351 #ifdef CONFIG_KVM_BOOK3S_64_HV
352 r = cpu_has_feature(CPU_FTR_ARCH_206) ? 1 : 0;
353 #elif defined(KVM_ARCH_WANT_MMU_NOTIFIER)
359 #ifdef CONFIG_KVM_BOOK3S_64_HV
360 case KVM_CAP_PPC_HTAB_FD:
365 case KVM_CAP_NR_VCPUS:
367 * Recommending a number of CPUs is somewhat arbitrary; we
368 * return the number of present CPUs for -HV (since a host
369 * will have secondary threads "offline"), and for other KVM
370 * implementations just count online CPUs.
372 #ifdef CONFIG_KVM_BOOK3S_64_HV
373 r = num_present_cpus();
375 r = num_online_cpus();
378 case KVM_CAP_MAX_VCPUS:
381 #ifdef CONFIG_PPC_BOOK3S_64
382 case KVM_CAP_PPC_GET_SMMU_INFO:
394 long kvm_arch_dev_ioctl(struct file *filp,
395 unsigned int ioctl, unsigned long arg)
400 void kvm_arch_free_memslot(struct kvm *kvm, struct kvm_memory_slot *free,
401 struct kvm_memory_slot *dont)
403 kvmppc_core_free_memslot(kvm, free, dont);
406 int kvm_arch_create_memslot(struct kvm *kvm, struct kvm_memory_slot *slot,
407 unsigned long npages)
409 return kvmppc_core_create_memslot(kvm, slot, npages);
412 int kvm_arch_prepare_memory_region(struct kvm *kvm,
413 struct kvm_memory_slot *memslot,
414 struct kvm_userspace_memory_region *mem,
415 enum kvm_mr_change change)
417 return kvmppc_core_prepare_memory_region(kvm, memslot, mem);
420 void kvm_arch_commit_memory_region(struct kvm *kvm,
421 struct kvm_userspace_memory_region *mem,
422 const struct kvm_memory_slot *old,
423 enum kvm_mr_change change)
425 kvmppc_core_commit_memory_region(kvm, mem, old);
428 void kvm_arch_flush_shadow_memslot(struct kvm *kvm,
429 struct kvm_memory_slot *slot)
431 kvmppc_core_flush_memslot(kvm, slot);
434 struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id)
436 struct kvm_vcpu *vcpu;
437 vcpu = kvmppc_core_vcpu_create(kvm, id);
439 vcpu->arch.wqp = &vcpu->wq;
440 kvmppc_create_vcpu_debugfs(vcpu, id);
445 int kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu)
450 void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu)
452 /* Make sure we're not using the vcpu anymore */
453 hrtimer_cancel(&vcpu->arch.dec_timer);
454 tasklet_kill(&vcpu->arch.tasklet);
456 kvmppc_remove_vcpu_debugfs(vcpu);
458 switch (vcpu->arch.irq_type) {
459 case KVMPPC_IRQ_MPIC:
460 kvmppc_mpic_disconnect_vcpu(vcpu->arch.mpic, vcpu);
462 case KVMPPC_IRQ_XICS:
463 kvmppc_xics_free_icp(vcpu);
467 kvmppc_core_vcpu_free(vcpu);
470 void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu)
472 kvm_arch_vcpu_free(vcpu);
475 int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu)
477 return kvmppc_core_pending_dec(vcpu);
481 * low level hrtimer wake routine. Because this runs in hardirq context
482 * we schedule a tasklet to do the real work.
484 enum hrtimer_restart kvmppc_decrementer_wakeup(struct hrtimer *timer)
486 struct kvm_vcpu *vcpu;
488 vcpu = container_of(timer, struct kvm_vcpu, arch.dec_timer);
489 tasklet_schedule(&vcpu->arch.tasklet);
491 return HRTIMER_NORESTART;
494 int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu)
498 hrtimer_init(&vcpu->arch.dec_timer, CLOCK_REALTIME, HRTIMER_MODE_ABS);
499 tasklet_init(&vcpu->arch.tasklet, kvmppc_decrementer_func, (ulong)vcpu);
500 vcpu->arch.dec_timer.function = kvmppc_decrementer_wakeup;
501 vcpu->arch.dec_expires = ~(u64)0;
503 #ifdef CONFIG_KVM_EXIT_TIMING
504 mutex_init(&vcpu->arch.exit_timing_lock);
506 ret = kvmppc_subarch_vcpu_init(vcpu);
510 void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu)
512 kvmppc_mmu_destroy(vcpu);
513 kvmppc_subarch_vcpu_uninit(vcpu);
516 void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
520 * vrsave (formerly usprg0) isn't used by Linux, but may
521 * be used by the guest.
523 * On non-booke this is associated with Altivec and
524 * is handled by code in book3s.c.
526 mtspr(SPRN_VRSAVE, vcpu->arch.vrsave);
528 kvmppc_core_vcpu_load(vcpu, cpu);
531 void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu)
533 kvmppc_core_vcpu_put(vcpu);
535 vcpu->arch.vrsave = mfspr(SPRN_VRSAVE);
539 static void kvmppc_complete_dcr_load(struct kvm_vcpu *vcpu,
542 kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, run->dcr.data);
545 static void kvmppc_complete_mmio_load(struct kvm_vcpu *vcpu,
548 u64 uninitialized_var(gpr);
550 if (run->mmio.len > sizeof(gpr)) {
551 printk(KERN_ERR "bad MMIO length: %d\n", run->mmio.len);
555 if (vcpu->arch.mmio_is_bigendian) {
556 switch (run->mmio.len) {
557 case 8: gpr = *(u64 *)run->mmio.data; break;
558 case 4: gpr = *(u32 *)run->mmio.data; break;
559 case 2: gpr = *(u16 *)run->mmio.data; break;
560 case 1: gpr = *(u8 *)run->mmio.data; break;
563 /* Convert BE data from userland back to LE. */
564 switch (run->mmio.len) {
565 case 4: gpr = ld_le32((u32 *)run->mmio.data); break;
566 case 2: gpr = ld_le16((u16 *)run->mmio.data); break;
567 case 1: gpr = *(u8 *)run->mmio.data; break;
571 if (vcpu->arch.mmio_sign_extend) {
572 switch (run->mmio.len) {
587 kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, gpr);
589 switch (vcpu->arch.io_gpr & KVM_MMIO_REG_EXT_MASK) {
590 case KVM_MMIO_REG_GPR:
591 kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, gpr);
593 case KVM_MMIO_REG_FPR:
594 vcpu->arch.fpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr;
596 #ifdef CONFIG_PPC_BOOK3S
597 case KVM_MMIO_REG_QPR:
598 vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr;
600 case KVM_MMIO_REG_FQPR:
601 vcpu->arch.fpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr;
602 vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr;
610 int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
611 unsigned int rt, unsigned int bytes, int is_bigendian)
615 if (bytes > sizeof(run->mmio.data)) {
616 printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__,
620 run->mmio.phys_addr = vcpu->arch.paddr_accessed;
621 run->mmio.len = bytes;
622 run->mmio.is_write = 0;
624 vcpu->arch.io_gpr = rt;
625 vcpu->arch.mmio_is_bigendian = is_bigendian;
626 vcpu->mmio_needed = 1;
627 vcpu->mmio_is_write = 0;
628 vcpu->arch.mmio_sign_extend = 0;
630 idx = srcu_read_lock(&vcpu->kvm->srcu);
632 ret = kvm_io_bus_read(vcpu->kvm, KVM_MMIO_BUS, run->mmio.phys_addr,
633 bytes, &run->mmio.data);
635 srcu_read_unlock(&vcpu->kvm->srcu, idx);
638 kvmppc_complete_mmio_load(vcpu, run);
639 vcpu->mmio_needed = 0;
643 return EMULATE_DO_MMIO;
646 /* Same as above, but sign extends */
647 int kvmppc_handle_loads(struct kvm_run *run, struct kvm_vcpu *vcpu,
648 unsigned int rt, unsigned int bytes, int is_bigendian)
652 vcpu->arch.mmio_sign_extend = 1;
653 r = kvmppc_handle_load(run, vcpu, rt, bytes, is_bigendian);
658 int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
659 u64 val, unsigned int bytes, int is_bigendian)
661 void *data = run->mmio.data;
664 if (bytes > sizeof(run->mmio.data)) {
665 printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__,
669 run->mmio.phys_addr = vcpu->arch.paddr_accessed;
670 run->mmio.len = bytes;
671 run->mmio.is_write = 1;
672 vcpu->mmio_needed = 1;
673 vcpu->mmio_is_write = 1;
675 /* Store the value at the lowest bytes in 'data'. */
678 case 8: *(u64 *)data = val; break;
679 case 4: *(u32 *)data = val; break;
680 case 2: *(u16 *)data = val; break;
681 case 1: *(u8 *)data = val; break;
684 /* Store LE value into 'data'. */
686 case 4: st_le32(data, val); break;
687 case 2: st_le16(data, val); break;
688 case 1: *(u8 *)data = val; break;
692 idx = srcu_read_lock(&vcpu->kvm->srcu);
694 ret = kvm_io_bus_write(vcpu->kvm, KVM_MMIO_BUS, run->mmio.phys_addr,
695 bytes, &run->mmio.data);
697 srcu_read_unlock(&vcpu->kvm->srcu, idx);
700 vcpu->mmio_needed = 0;
704 return EMULATE_DO_MMIO;
707 int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run)
712 if (vcpu->sigset_active)
713 sigprocmask(SIG_SETMASK, &vcpu->sigset, &sigsaved);
715 if (vcpu->mmio_needed) {
716 if (!vcpu->mmio_is_write)
717 kvmppc_complete_mmio_load(vcpu, run);
718 vcpu->mmio_needed = 0;
719 } else if (vcpu->arch.dcr_needed) {
720 if (!vcpu->arch.dcr_is_write)
721 kvmppc_complete_dcr_load(vcpu, run);
722 vcpu->arch.dcr_needed = 0;
723 } else if (vcpu->arch.osi_needed) {
724 u64 *gprs = run->osi.gprs;
727 for (i = 0; i < 32; i++)
728 kvmppc_set_gpr(vcpu, i, gprs[i]);
729 vcpu->arch.osi_needed = 0;
730 } else if (vcpu->arch.hcall_needed) {
733 kvmppc_set_gpr(vcpu, 3, run->papr_hcall.ret);
734 for (i = 0; i < 9; ++i)
735 kvmppc_set_gpr(vcpu, 4 + i, run->papr_hcall.args[i]);
736 vcpu->arch.hcall_needed = 0;
738 } else if (vcpu->arch.epr_needed) {
739 kvmppc_set_epr(vcpu, run->epr.epr);
740 vcpu->arch.epr_needed = 0;
744 r = kvmppc_vcpu_run(run, vcpu);
746 if (vcpu->sigset_active)
747 sigprocmask(SIG_SETMASK, &sigsaved, NULL);
752 int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq)
754 if (irq->irq == KVM_INTERRUPT_UNSET) {
755 kvmppc_core_dequeue_external(vcpu);
759 kvmppc_core_queue_external(vcpu, irq);
766 static int kvm_vcpu_ioctl_enable_cap(struct kvm_vcpu *vcpu,
767 struct kvm_enable_cap *cap)
775 case KVM_CAP_PPC_OSI:
777 vcpu->arch.osi_enabled = true;
779 case KVM_CAP_PPC_PAPR:
781 vcpu->arch.papr_enabled = true;
783 case KVM_CAP_PPC_EPR:
786 vcpu->arch.epr_flags |= KVMPPC_EPR_USER;
788 vcpu->arch.epr_flags &= ~KVMPPC_EPR_USER;
791 case KVM_CAP_PPC_BOOKE_WATCHDOG:
793 vcpu->arch.watchdog_enabled = true;
796 #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC)
797 case KVM_CAP_SW_TLB: {
798 struct kvm_config_tlb cfg;
799 void __user *user_ptr = (void __user *)(uintptr_t)cap->args[0];
802 if (copy_from_user(&cfg, user_ptr, sizeof(cfg)))
805 r = kvm_vcpu_ioctl_config_tlb(vcpu, &cfg);
809 #ifdef CONFIG_KVM_MPIC
810 case KVM_CAP_IRQ_MPIC: {
812 struct kvm_device *dev;
815 filp = fget(cap->args[0]);
820 dev = kvm_device_from_filp(filp);
822 r = kvmppc_mpic_connect_vcpu(dev, vcpu, cap->args[1]);
828 #ifdef CONFIG_KVM_XICS
829 case KVM_CAP_IRQ_XICS: {
831 struct kvm_device *dev;
834 filp = fget(cap->args[0]);
839 dev = kvm_device_from_filp(filp);
841 r = kvmppc_xics_connect_vcpu(dev, vcpu, cap->args[1]);
846 #endif /* CONFIG_KVM_XICS */
853 r = kvmppc_sanity_check(vcpu);
858 int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu,
859 struct kvm_mp_state *mp_state)
864 int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,
865 struct kvm_mp_state *mp_state)
870 long kvm_arch_vcpu_ioctl(struct file *filp,
871 unsigned int ioctl, unsigned long arg)
873 struct kvm_vcpu *vcpu = filp->private_data;
874 void __user *argp = (void __user *)arg;
878 case KVM_INTERRUPT: {
879 struct kvm_interrupt irq;
881 if (copy_from_user(&irq, argp, sizeof(irq)))
883 r = kvm_vcpu_ioctl_interrupt(vcpu, &irq);
889 struct kvm_enable_cap cap;
891 if (copy_from_user(&cap, argp, sizeof(cap)))
893 r = kvm_vcpu_ioctl_enable_cap(vcpu, &cap);
897 case KVM_SET_ONE_REG:
898 case KVM_GET_ONE_REG:
900 struct kvm_one_reg reg;
902 if (copy_from_user(®, argp, sizeof(reg)))
904 if (ioctl == KVM_SET_ONE_REG)
905 r = kvm_vcpu_ioctl_set_one_reg(vcpu, ®);
907 r = kvm_vcpu_ioctl_get_one_reg(vcpu, ®);
911 #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC)
912 case KVM_DIRTY_TLB: {
913 struct kvm_dirty_tlb dirty;
915 if (copy_from_user(&dirty, argp, sizeof(dirty)))
917 r = kvm_vcpu_ioctl_dirty_tlb(vcpu, &dirty);
929 int kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf)
931 return VM_FAULT_SIGBUS;
934 static int kvm_vm_ioctl_get_pvinfo(struct kvm_ppc_pvinfo *pvinfo)
936 u32 inst_nop = 0x60000000;
937 #ifdef CONFIG_KVM_BOOKE_HV
938 u32 inst_sc1 = 0x44000022;
939 pvinfo->hcall[0] = inst_sc1;
940 pvinfo->hcall[1] = inst_nop;
941 pvinfo->hcall[2] = inst_nop;
942 pvinfo->hcall[3] = inst_nop;
944 u32 inst_lis = 0x3c000000;
945 u32 inst_ori = 0x60000000;
946 u32 inst_sc = 0x44000002;
947 u32 inst_imm_mask = 0xffff;
950 * The hypercall to get into KVM from within guest context is as
953 * lis r0, r0, KVM_SC_MAGIC_R0@h
954 * ori r0, KVM_SC_MAGIC_R0@l
958 pvinfo->hcall[0] = inst_lis | ((KVM_SC_MAGIC_R0 >> 16) & inst_imm_mask);
959 pvinfo->hcall[1] = inst_ori | (KVM_SC_MAGIC_R0 & inst_imm_mask);
960 pvinfo->hcall[2] = inst_sc;
961 pvinfo->hcall[3] = inst_nop;
964 pvinfo->flags = KVM_PPC_PVINFO_FLAGS_EV_IDLE;
969 int kvm_vm_ioctl_irq_line(struct kvm *kvm, struct kvm_irq_level *irq_event,
972 if (!irqchip_in_kernel(kvm))
975 irq_event->status = kvm_set_irq(kvm, KVM_USERSPACE_IRQ_SOURCE_ID,
976 irq_event->irq, irq_event->level,
981 long kvm_arch_vm_ioctl(struct file *filp,
982 unsigned int ioctl, unsigned long arg)
984 struct kvm *kvm __maybe_unused = filp->private_data;
985 void __user *argp = (void __user *)arg;
989 case KVM_PPC_GET_PVINFO: {
990 struct kvm_ppc_pvinfo pvinfo;
991 memset(&pvinfo, 0, sizeof(pvinfo));
992 r = kvm_vm_ioctl_get_pvinfo(&pvinfo);
993 if (copy_to_user(argp, &pvinfo, sizeof(pvinfo))) {
1000 #ifdef CONFIG_PPC_BOOK3S_64
1001 case KVM_CREATE_SPAPR_TCE: {
1002 struct kvm_create_spapr_tce create_tce;
1005 if (copy_from_user(&create_tce, argp, sizeof(create_tce)))
1007 r = kvm_vm_ioctl_create_spapr_tce(kvm, &create_tce);
1010 #endif /* CONFIG_PPC_BOOK3S_64 */
1012 #ifdef CONFIG_KVM_BOOK3S_64_HV
1013 case KVM_ALLOCATE_RMA: {
1014 struct kvm_allocate_rma rma;
1015 struct kvm *kvm = filp->private_data;
1017 r = kvm_vm_ioctl_allocate_rma(kvm, &rma);
1018 if (r >= 0 && copy_to_user(argp, &rma, sizeof(rma)))
1023 case KVM_PPC_ALLOCATE_HTAB: {
1027 if (get_user(htab_order, (u32 __user *)argp))
1029 r = kvmppc_alloc_reset_hpt(kvm, &htab_order);
1033 if (put_user(htab_order, (u32 __user *)argp))
1039 case KVM_PPC_GET_HTAB_FD: {
1040 struct kvm_get_htab_fd ghf;
1043 if (copy_from_user(&ghf, argp, sizeof(ghf)))
1045 r = kvm_vm_ioctl_get_htab_fd(kvm, &ghf);
1048 #endif /* CONFIG_KVM_BOOK3S_64_HV */
1050 #ifdef CONFIG_PPC_BOOK3S_64
1051 case KVM_PPC_GET_SMMU_INFO: {
1052 struct kvm_ppc_smmu_info info;
1054 memset(&info, 0, sizeof(info));
1055 r = kvm_vm_ioctl_get_smmu_info(kvm, &info);
1056 if (r >= 0 && copy_to_user(argp, &info, sizeof(info)))
1060 case KVM_PPC_RTAS_DEFINE_TOKEN: {
1061 struct kvm *kvm = filp->private_data;
1063 r = kvm_vm_ioctl_rtas_define_token(kvm, argp);
1066 #endif /* CONFIG_PPC_BOOK3S_64 */
1075 static unsigned long lpid_inuse[BITS_TO_LONGS(KVMPPC_NR_LPIDS)];
1076 static unsigned long nr_lpids;
1078 long kvmppc_alloc_lpid(void)
1083 lpid = find_first_zero_bit(lpid_inuse, KVMPPC_NR_LPIDS);
1084 if (lpid >= nr_lpids) {
1085 pr_err("%s: No LPIDs free\n", __func__);
1088 } while (test_and_set_bit(lpid, lpid_inuse));
1093 void kvmppc_claim_lpid(long lpid)
1095 set_bit(lpid, lpid_inuse);
1098 void kvmppc_free_lpid(long lpid)
1100 clear_bit(lpid, lpid_inuse);
1103 void kvmppc_init_lpid(unsigned long nr_lpids_param)
1105 nr_lpids = min_t(unsigned long, KVMPPC_NR_LPIDS, nr_lpids_param);
1106 memset(lpid_inuse, 0, sizeof(lpid_inuse));
1109 int kvm_arch_init(void *opaque)