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 *garbage)
254 void kvm_arch_hardware_disable(void *garbage)
258 int kvm_arch_hardware_setup(void)
263 void kvm_arch_hardware_unsetup(void)
267 void kvm_arch_check_processor_compat(void *rtn)
269 *(int *)rtn = kvmppc_core_check_processor_compat();
272 int kvm_arch_init_vm(struct kvm *kvm, unsigned long type)
277 return kvmppc_core_init_vm(kvm);
280 void kvm_arch_destroy_vm(struct kvm *kvm)
283 struct kvm_vcpu *vcpu;
285 kvm_for_each_vcpu(i, vcpu, kvm)
286 kvm_arch_vcpu_free(vcpu);
288 mutex_lock(&kvm->lock);
289 for (i = 0; i < atomic_read(&kvm->online_vcpus); i++)
290 kvm->vcpus[i] = NULL;
292 atomic_set(&kvm->online_vcpus, 0);
294 kvmppc_core_destroy_vm(kvm);
296 mutex_unlock(&kvm->lock);
299 void kvm_arch_sync_events(struct kvm *kvm)
303 int kvm_dev_ioctl_check_extension(long ext)
309 case KVM_CAP_PPC_BOOKE_SREGS:
310 case KVM_CAP_PPC_BOOKE_WATCHDOG:
311 case KVM_CAP_PPC_EPR:
313 case KVM_CAP_PPC_SEGSTATE:
314 case KVM_CAP_PPC_HIOR:
315 case KVM_CAP_PPC_PAPR:
317 case KVM_CAP_PPC_UNSET_IRQ:
318 case KVM_CAP_PPC_IRQ_LEVEL:
319 case KVM_CAP_ENABLE_CAP:
320 case KVM_CAP_ONE_REG:
321 case KVM_CAP_IOEVENTFD:
322 case KVM_CAP_DEVICE_CTRL:
325 #ifndef CONFIG_KVM_BOOK3S_64_HV
326 case KVM_CAP_PPC_PAIRED_SINGLES:
327 case KVM_CAP_PPC_OSI:
328 case KVM_CAP_PPC_GET_PVINFO:
329 #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC)
332 #ifdef CONFIG_KVM_MPIC
333 case KVM_CAP_IRQ_MPIC:
337 case KVM_CAP_COALESCED_MMIO:
338 r = KVM_COALESCED_MMIO_PAGE_OFFSET;
341 #ifdef CONFIG_PPC_BOOK3S_64
342 case KVM_CAP_SPAPR_TCE:
343 case KVM_CAP_PPC_ALLOC_HTAB:
344 case KVM_CAP_PPC_RTAS:
345 #ifdef CONFIG_KVM_XICS
346 case KVM_CAP_IRQ_XICS:
350 #endif /* CONFIG_PPC_BOOK3S_64 */
351 #ifdef CONFIG_KVM_BOOK3S_64_HV
352 case KVM_CAP_PPC_SMT:
353 r = threads_per_core;
355 case KVM_CAP_PPC_RMA:
357 /* PPC970 requires an RMA */
358 if (cpu_has_feature(CPU_FTR_ARCH_201))
362 case KVM_CAP_SYNC_MMU:
363 #ifdef CONFIG_KVM_BOOK3S_64_HV
364 r = cpu_has_feature(CPU_FTR_ARCH_206) ? 1 : 0;
365 #elif defined(KVM_ARCH_WANT_MMU_NOTIFIER)
371 #ifdef CONFIG_KVM_BOOK3S_64_HV
372 case KVM_CAP_PPC_HTAB_FD:
377 case KVM_CAP_NR_VCPUS:
379 * Recommending a number of CPUs is somewhat arbitrary; we
380 * return the number of present CPUs for -HV (since a host
381 * will have secondary threads "offline"), and for other KVM
382 * implementations just count online CPUs.
384 #ifdef CONFIG_KVM_BOOK3S_64_HV
385 r = num_present_cpus();
387 r = num_online_cpus();
390 case KVM_CAP_MAX_VCPUS:
393 #ifdef CONFIG_PPC_BOOK3S_64
394 case KVM_CAP_PPC_GET_SMMU_INFO:
406 long kvm_arch_dev_ioctl(struct file *filp,
407 unsigned int ioctl, unsigned long arg)
412 void kvm_arch_free_memslot(struct kvm_memory_slot *free,
413 struct kvm_memory_slot *dont)
415 kvmppc_core_free_memslot(free, dont);
418 int kvm_arch_create_memslot(struct kvm_memory_slot *slot, unsigned long npages)
420 return kvmppc_core_create_memslot(slot, npages);
423 int kvm_arch_prepare_memory_region(struct kvm *kvm,
424 struct kvm_memory_slot *memslot,
425 struct kvm_userspace_memory_region *mem,
426 enum kvm_mr_change change)
428 return kvmppc_core_prepare_memory_region(kvm, memslot, mem);
431 void kvm_arch_commit_memory_region(struct kvm *kvm,
432 struct kvm_userspace_memory_region *mem,
433 const struct kvm_memory_slot *old,
434 enum kvm_mr_change change)
436 kvmppc_core_commit_memory_region(kvm, mem, old);
439 void kvm_arch_flush_shadow_all(struct kvm *kvm)
443 void kvm_arch_flush_shadow_memslot(struct kvm *kvm,
444 struct kvm_memory_slot *slot)
446 kvmppc_core_flush_memslot(kvm, slot);
449 struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id)
451 struct kvm_vcpu *vcpu;
452 vcpu = kvmppc_core_vcpu_create(kvm, id);
454 vcpu->arch.wqp = &vcpu->wq;
455 kvmppc_create_vcpu_debugfs(vcpu, id);
460 int kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu)
465 void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu)
467 /* Make sure we're not using the vcpu anymore */
468 hrtimer_cancel(&vcpu->arch.dec_timer);
469 tasklet_kill(&vcpu->arch.tasklet);
471 kvmppc_remove_vcpu_debugfs(vcpu);
473 switch (vcpu->arch.irq_type) {
474 case KVMPPC_IRQ_MPIC:
475 kvmppc_mpic_disconnect_vcpu(vcpu->arch.mpic, vcpu);
477 case KVMPPC_IRQ_XICS:
478 kvmppc_xics_free_icp(vcpu);
482 kvmppc_core_vcpu_free(vcpu);
485 void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu)
487 kvm_arch_vcpu_free(vcpu);
490 int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu)
492 return kvmppc_core_pending_dec(vcpu);
496 * low level hrtimer wake routine. Because this runs in hardirq context
497 * we schedule a tasklet to do the real work.
499 enum hrtimer_restart kvmppc_decrementer_wakeup(struct hrtimer *timer)
501 struct kvm_vcpu *vcpu;
503 vcpu = container_of(timer, struct kvm_vcpu, arch.dec_timer);
504 tasklet_schedule(&vcpu->arch.tasklet);
506 return HRTIMER_NORESTART;
509 int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu)
513 hrtimer_init(&vcpu->arch.dec_timer, CLOCK_REALTIME, HRTIMER_MODE_ABS);
514 tasklet_init(&vcpu->arch.tasklet, kvmppc_decrementer_func, (ulong)vcpu);
515 vcpu->arch.dec_timer.function = kvmppc_decrementer_wakeup;
516 vcpu->arch.dec_expires = ~(u64)0;
518 #ifdef CONFIG_KVM_EXIT_TIMING
519 mutex_init(&vcpu->arch.exit_timing_lock);
521 ret = kvmppc_subarch_vcpu_init(vcpu);
525 void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu)
527 kvmppc_mmu_destroy(vcpu);
528 kvmppc_subarch_vcpu_uninit(vcpu);
531 void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
535 * vrsave (formerly usprg0) isn't used by Linux, but may
536 * be used by the guest.
538 * On non-booke this is associated with Altivec and
539 * is handled by code in book3s.c.
541 mtspr(SPRN_VRSAVE, vcpu->arch.vrsave);
543 kvmppc_core_vcpu_load(vcpu, cpu);
546 void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu)
548 kvmppc_core_vcpu_put(vcpu);
550 vcpu->arch.vrsave = mfspr(SPRN_VRSAVE);
554 static void kvmppc_complete_dcr_load(struct kvm_vcpu *vcpu,
557 kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, run->dcr.data);
560 static void kvmppc_complete_mmio_load(struct kvm_vcpu *vcpu,
563 u64 uninitialized_var(gpr);
565 if (run->mmio.len > sizeof(gpr)) {
566 printk(KERN_ERR "bad MMIO length: %d\n", run->mmio.len);
570 if (vcpu->arch.mmio_is_bigendian) {
571 switch (run->mmio.len) {
572 case 8: gpr = *(u64 *)run->mmio.data; break;
573 case 4: gpr = *(u32 *)run->mmio.data; break;
574 case 2: gpr = *(u16 *)run->mmio.data; break;
575 case 1: gpr = *(u8 *)run->mmio.data; break;
578 /* Convert BE data from userland back to LE. */
579 switch (run->mmio.len) {
580 case 4: gpr = ld_le32((u32 *)run->mmio.data); break;
581 case 2: gpr = ld_le16((u16 *)run->mmio.data); break;
582 case 1: gpr = *(u8 *)run->mmio.data; break;
586 if (vcpu->arch.mmio_sign_extend) {
587 switch (run->mmio.len) {
602 kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, gpr);
604 switch (vcpu->arch.io_gpr & KVM_MMIO_REG_EXT_MASK) {
605 case KVM_MMIO_REG_GPR:
606 kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, gpr);
608 case KVM_MMIO_REG_FPR:
609 vcpu->arch.fpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr;
611 #ifdef CONFIG_PPC_BOOK3S
612 case KVM_MMIO_REG_QPR:
613 vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr;
615 case KVM_MMIO_REG_FQPR:
616 vcpu->arch.fpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr;
617 vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr;
625 int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
626 unsigned int rt, unsigned int bytes, int is_bigendian)
630 if (bytes > sizeof(run->mmio.data)) {
631 printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__,
635 run->mmio.phys_addr = vcpu->arch.paddr_accessed;
636 run->mmio.len = bytes;
637 run->mmio.is_write = 0;
639 vcpu->arch.io_gpr = rt;
640 vcpu->arch.mmio_is_bigendian = is_bigendian;
641 vcpu->mmio_needed = 1;
642 vcpu->mmio_is_write = 0;
643 vcpu->arch.mmio_sign_extend = 0;
645 idx = srcu_read_lock(&vcpu->kvm->srcu);
647 ret = kvm_io_bus_read(vcpu->kvm, KVM_MMIO_BUS, run->mmio.phys_addr,
648 bytes, &run->mmio.data);
650 srcu_read_unlock(&vcpu->kvm->srcu, idx);
653 kvmppc_complete_mmio_load(vcpu, run);
654 vcpu->mmio_needed = 0;
658 return EMULATE_DO_MMIO;
661 /* Same as above, but sign extends */
662 int kvmppc_handle_loads(struct kvm_run *run, struct kvm_vcpu *vcpu,
663 unsigned int rt, unsigned int bytes, int is_bigendian)
667 vcpu->arch.mmio_sign_extend = 1;
668 r = kvmppc_handle_load(run, vcpu, rt, bytes, is_bigendian);
673 int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
674 u64 val, unsigned int bytes, int is_bigendian)
676 void *data = run->mmio.data;
679 if (bytes > sizeof(run->mmio.data)) {
680 printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__,
684 run->mmio.phys_addr = vcpu->arch.paddr_accessed;
685 run->mmio.len = bytes;
686 run->mmio.is_write = 1;
687 vcpu->mmio_needed = 1;
688 vcpu->mmio_is_write = 1;
690 /* Store the value at the lowest bytes in 'data'. */
693 case 8: *(u64 *)data = val; break;
694 case 4: *(u32 *)data = val; break;
695 case 2: *(u16 *)data = val; break;
696 case 1: *(u8 *)data = val; break;
699 /* Store LE value into 'data'. */
701 case 4: st_le32(data, val); break;
702 case 2: st_le16(data, val); break;
703 case 1: *(u8 *)data = val; break;
707 idx = srcu_read_lock(&vcpu->kvm->srcu);
709 ret = kvm_io_bus_write(vcpu->kvm, KVM_MMIO_BUS, run->mmio.phys_addr,
710 bytes, &run->mmio.data);
712 srcu_read_unlock(&vcpu->kvm->srcu, idx);
715 vcpu->mmio_needed = 0;
719 return EMULATE_DO_MMIO;
722 int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run)
727 if (vcpu->sigset_active)
728 sigprocmask(SIG_SETMASK, &vcpu->sigset, &sigsaved);
730 if (vcpu->mmio_needed) {
731 if (!vcpu->mmio_is_write)
732 kvmppc_complete_mmio_load(vcpu, run);
733 vcpu->mmio_needed = 0;
734 } else if (vcpu->arch.dcr_needed) {
735 if (!vcpu->arch.dcr_is_write)
736 kvmppc_complete_dcr_load(vcpu, run);
737 vcpu->arch.dcr_needed = 0;
738 } else if (vcpu->arch.osi_needed) {
739 u64 *gprs = run->osi.gprs;
742 for (i = 0; i < 32; i++)
743 kvmppc_set_gpr(vcpu, i, gprs[i]);
744 vcpu->arch.osi_needed = 0;
745 } else if (vcpu->arch.hcall_needed) {
748 kvmppc_set_gpr(vcpu, 3, run->papr_hcall.ret);
749 for (i = 0; i < 9; ++i)
750 kvmppc_set_gpr(vcpu, 4 + i, run->papr_hcall.args[i]);
751 vcpu->arch.hcall_needed = 0;
753 } else if (vcpu->arch.epr_needed) {
754 kvmppc_set_epr(vcpu, run->epr.epr);
755 vcpu->arch.epr_needed = 0;
759 r = kvmppc_vcpu_run(run, vcpu);
761 if (vcpu->sigset_active)
762 sigprocmask(SIG_SETMASK, &sigsaved, NULL);
767 int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq)
769 if (irq->irq == KVM_INTERRUPT_UNSET) {
770 kvmppc_core_dequeue_external(vcpu);
774 kvmppc_core_queue_external(vcpu, irq);
781 static int kvm_vcpu_ioctl_enable_cap(struct kvm_vcpu *vcpu,
782 struct kvm_enable_cap *cap)
790 case KVM_CAP_PPC_OSI:
792 vcpu->arch.osi_enabled = true;
794 case KVM_CAP_PPC_PAPR:
796 vcpu->arch.papr_enabled = true;
798 case KVM_CAP_PPC_EPR:
801 vcpu->arch.epr_flags |= KVMPPC_EPR_USER;
803 vcpu->arch.epr_flags &= ~KVMPPC_EPR_USER;
806 case KVM_CAP_PPC_BOOKE_WATCHDOG:
808 vcpu->arch.watchdog_enabled = true;
811 #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC)
812 case KVM_CAP_SW_TLB: {
813 struct kvm_config_tlb cfg;
814 void __user *user_ptr = (void __user *)(uintptr_t)cap->args[0];
817 if (copy_from_user(&cfg, user_ptr, sizeof(cfg)))
820 r = kvm_vcpu_ioctl_config_tlb(vcpu, &cfg);
824 #ifdef CONFIG_KVM_MPIC
825 case KVM_CAP_IRQ_MPIC: {
827 struct kvm_device *dev;
830 f = fdget(cap->args[0]);
835 dev = kvm_device_from_filp(f.file);
837 r = kvmppc_mpic_connect_vcpu(dev, vcpu, cap->args[1]);
843 #ifdef CONFIG_KVM_XICS
844 case KVM_CAP_IRQ_XICS: {
846 struct kvm_device *dev;
849 f = fdget(cap->args[0]);
854 dev = kvm_device_from_filp(f.file);
856 r = kvmppc_xics_connect_vcpu(dev, vcpu, cap->args[1]);
861 #endif /* CONFIG_KVM_XICS */
868 r = kvmppc_sanity_check(vcpu);
873 int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu,
874 struct kvm_mp_state *mp_state)
879 int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,
880 struct kvm_mp_state *mp_state)
885 long kvm_arch_vcpu_ioctl(struct file *filp,
886 unsigned int ioctl, unsigned long arg)
888 struct kvm_vcpu *vcpu = filp->private_data;
889 void __user *argp = (void __user *)arg;
893 case KVM_INTERRUPT: {
894 struct kvm_interrupt irq;
896 if (copy_from_user(&irq, argp, sizeof(irq)))
898 r = kvm_vcpu_ioctl_interrupt(vcpu, &irq);
904 struct kvm_enable_cap cap;
906 if (copy_from_user(&cap, argp, sizeof(cap)))
908 r = kvm_vcpu_ioctl_enable_cap(vcpu, &cap);
912 case KVM_SET_ONE_REG:
913 case KVM_GET_ONE_REG:
915 struct kvm_one_reg reg;
917 if (copy_from_user(®, argp, sizeof(reg)))
919 if (ioctl == KVM_SET_ONE_REG)
920 r = kvm_vcpu_ioctl_set_one_reg(vcpu, ®);
922 r = kvm_vcpu_ioctl_get_one_reg(vcpu, ®);
926 #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC)
927 case KVM_DIRTY_TLB: {
928 struct kvm_dirty_tlb dirty;
930 if (copy_from_user(&dirty, argp, sizeof(dirty)))
932 r = kvm_vcpu_ioctl_dirty_tlb(vcpu, &dirty);
944 int kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf)
946 return VM_FAULT_SIGBUS;
949 static int kvm_vm_ioctl_get_pvinfo(struct kvm_ppc_pvinfo *pvinfo)
951 u32 inst_nop = 0x60000000;
952 #ifdef CONFIG_KVM_BOOKE_HV
953 u32 inst_sc1 = 0x44000022;
954 pvinfo->hcall[0] = inst_sc1;
955 pvinfo->hcall[1] = inst_nop;
956 pvinfo->hcall[2] = inst_nop;
957 pvinfo->hcall[3] = inst_nop;
959 u32 inst_lis = 0x3c000000;
960 u32 inst_ori = 0x60000000;
961 u32 inst_sc = 0x44000002;
962 u32 inst_imm_mask = 0xffff;
965 * The hypercall to get into KVM from within guest context is as
968 * lis r0, r0, KVM_SC_MAGIC_R0@h
969 * ori r0, KVM_SC_MAGIC_R0@l
973 pvinfo->hcall[0] = inst_lis | ((KVM_SC_MAGIC_R0 >> 16) & inst_imm_mask);
974 pvinfo->hcall[1] = inst_ori | (KVM_SC_MAGIC_R0 & inst_imm_mask);
975 pvinfo->hcall[2] = inst_sc;
976 pvinfo->hcall[3] = inst_nop;
979 pvinfo->flags = KVM_PPC_PVINFO_FLAGS_EV_IDLE;
984 int kvm_vm_ioctl_irq_line(struct kvm *kvm, struct kvm_irq_level *irq_event,
987 if (!irqchip_in_kernel(kvm))
990 irq_event->status = kvm_set_irq(kvm, KVM_USERSPACE_IRQ_SOURCE_ID,
991 irq_event->irq, irq_event->level,
996 long kvm_arch_vm_ioctl(struct file *filp,
997 unsigned int ioctl, unsigned long arg)
999 struct kvm *kvm __maybe_unused = filp->private_data;
1000 void __user *argp = (void __user *)arg;
1004 case KVM_PPC_GET_PVINFO: {
1005 struct kvm_ppc_pvinfo pvinfo;
1006 memset(&pvinfo, 0, sizeof(pvinfo));
1007 r = kvm_vm_ioctl_get_pvinfo(&pvinfo);
1008 if (copy_to_user(argp, &pvinfo, sizeof(pvinfo))) {
1015 #ifdef CONFIG_PPC_BOOK3S_64
1016 case KVM_CREATE_SPAPR_TCE: {
1017 struct kvm_create_spapr_tce create_tce;
1020 if (copy_from_user(&create_tce, argp, sizeof(create_tce)))
1022 r = kvm_vm_ioctl_create_spapr_tce(kvm, &create_tce);
1025 #endif /* CONFIG_PPC_BOOK3S_64 */
1027 #ifdef CONFIG_KVM_BOOK3S_64_HV
1028 case KVM_ALLOCATE_RMA: {
1029 struct kvm_allocate_rma rma;
1030 struct kvm *kvm = filp->private_data;
1032 r = kvm_vm_ioctl_allocate_rma(kvm, &rma);
1033 if (r >= 0 && copy_to_user(argp, &rma, sizeof(rma)))
1038 case KVM_PPC_ALLOCATE_HTAB: {
1042 if (get_user(htab_order, (u32 __user *)argp))
1044 r = kvmppc_alloc_reset_hpt(kvm, &htab_order);
1048 if (put_user(htab_order, (u32 __user *)argp))
1054 case KVM_PPC_GET_HTAB_FD: {
1055 struct kvm_get_htab_fd ghf;
1058 if (copy_from_user(&ghf, argp, sizeof(ghf)))
1060 r = kvm_vm_ioctl_get_htab_fd(kvm, &ghf);
1063 #endif /* CONFIG_KVM_BOOK3S_64_HV */
1065 #ifdef CONFIG_PPC_BOOK3S_64
1066 case KVM_PPC_GET_SMMU_INFO: {
1067 struct kvm_ppc_smmu_info info;
1069 memset(&info, 0, sizeof(info));
1070 r = kvm_vm_ioctl_get_smmu_info(kvm, &info);
1071 if (r >= 0 && copy_to_user(argp, &info, sizeof(info)))
1075 case KVM_PPC_RTAS_DEFINE_TOKEN: {
1076 struct kvm *kvm = filp->private_data;
1078 r = kvm_vm_ioctl_rtas_define_token(kvm, argp);
1081 #endif /* CONFIG_PPC_BOOK3S_64 */
1090 static unsigned long lpid_inuse[BITS_TO_LONGS(KVMPPC_NR_LPIDS)];
1091 static unsigned long nr_lpids;
1093 long kvmppc_alloc_lpid(void)
1098 lpid = find_first_zero_bit(lpid_inuse, KVMPPC_NR_LPIDS);
1099 if (lpid >= nr_lpids) {
1100 pr_err("%s: No LPIDs free\n", __func__);
1103 } while (test_and_set_bit(lpid, lpid_inuse));
1108 void kvmppc_claim_lpid(long lpid)
1110 set_bit(lpid, lpid_inuse);
1113 void kvmppc_free_lpid(long lpid)
1115 clear_bit(lpid, lpid_inuse);
1118 void kvmppc_init_lpid(unsigned long nr_lpids_param)
1120 nr_lpids = min_t(unsigned long, KVMPPC_NR_LPIDS, nr_lpids_param);
1121 memset(lpid_inuse, 0, sizeof(lpid_inuse));
1124 int kvm_arch_init(void *opaque)
1129 void kvm_arch_exit(void)