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 */
128 #endif /* CONFIG_KVM_BOOK3S_64_HV */
130 int kvmppc_kvm_pv(struct kvm_vcpu *vcpu)
132 int nr = kvmppc_get_gpr(vcpu, 11);
134 unsigned long __maybe_unused param1 = kvmppc_get_gpr(vcpu, 3);
135 unsigned long __maybe_unused param2 = kvmppc_get_gpr(vcpu, 4);
136 unsigned long __maybe_unused param3 = kvmppc_get_gpr(vcpu, 5);
137 unsigned long __maybe_unused param4 = kvmppc_get_gpr(vcpu, 6);
138 unsigned long r2 = 0;
140 if (!(vcpu->arch.shared->msr & MSR_SF)) {
142 param1 &= 0xffffffff;
143 param2 &= 0xffffffff;
144 param3 &= 0xffffffff;
145 param4 &= 0xffffffff;
149 case KVM_HCALL_TOKEN(KVM_HC_PPC_MAP_MAGIC_PAGE):
151 vcpu->arch.magic_page_pa = param1;
152 vcpu->arch.magic_page_ea = param2;
154 r2 = KVM_MAGIC_FEAT_SR | KVM_MAGIC_FEAT_MAS0_TO_SPRG7;
159 case KVM_HCALL_TOKEN(KVM_HC_FEATURES):
161 #if defined(CONFIG_PPC_BOOK3S) || defined(CONFIG_KVM_E500V2)
162 /* XXX Missing magic page on 44x */
163 r2 |= (1 << KVM_FEATURE_MAGIC_PAGE);
166 /* Second return value is in r4 */
168 case EV_HCALL_TOKEN(EV_IDLE):
170 kvm_vcpu_block(vcpu);
171 clear_bit(KVM_REQ_UNHALT, &vcpu->requests);
174 r = EV_UNIMPLEMENTED;
178 kvmppc_set_gpr(vcpu, 4, r2);
183 int kvmppc_sanity_check(struct kvm_vcpu *vcpu)
187 /* We have to know what CPU to virtualize */
191 /* PAPR only works with book3s_64 */
192 if ((vcpu->arch.cpu_type != KVM_CPU_3S_64) && vcpu->arch.papr_enabled)
195 #ifdef CONFIG_KVM_BOOK3S_64_HV
196 /* HV KVM can only do PAPR mode for now */
197 if (!vcpu->arch.papr_enabled)
201 #ifdef CONFIG_KVM_BOOKE_HV
202 if (!cpu_has_feature(CPU_FTR_EMB_HV))
210 return r ? 0 : -EINVAL;
213 int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu)
215 enum emulation_result er;
218 er = kvmppc_emulate_instruction(run, vcpu);
221 /* Future optimization: only reload non-volatiles if they were
222 * actually modified. */
225 case EMULATE_DO_MMIO:
226 run->exit_reason = KVM_EXIT_MMIO;
227 /* We must reload nonvolatiles because "update" load/store
228 * instructions modify register state. */
229 /* Future optimization: only reload non-volatiles if they were
230 * actually modified. */
234 /* XXX Deliver Program interrupt to guest. */
235 printk(KERN_EMERG "%s: emulation failed (%08x)\n", __func__,
236 kvmppc_get_last_inst(vcpu));
247 int kvm_arch_hardware_enable(void *garbage)
252 void kvm_arch_hardware_disable(void *garbage)
256 int kvm_arch_hardware_setup(void)
261 void kvm_arch_hardware_unsetup(void)
265 void kvm_arch_check_processor_compat(void *rtn)
267 *(int *)rtn = kvmppc_core_check_processor_compat();
270 int kvm_arch_init_vm(struct kvm *kvm, unsigned long type)
275 return kvmppc_core_init_vm(kvm);
278 void kvm_arch_destroy_vm(struct kvm *kvm)
281 struct kvm_vcpu *vcpu;
283 kvm_for_each_vcpu(i, vcpu, kvm)
284 kvm_arch_vcpu_free(vcpu);
286 mutex_lock(&kvm->lock);
287 for (i = 0; i < atomic_read(&kvm->online_vcpus); i++)
288 kvm->vcpus[i] = NULL;
290 atomic_set(&kvm->online_vcpus, 0);
292 kvmppc_core_destroy_vm(kvm);
294 mutex_unlock(&kvm->lock);
297 void kvm_arch_sync_events(struct kvm *kvm)
301 int kvm_dev_ioctl_check_extension(long ext)
307 case KVM_CAP_PPC_BOOKE_SREGS:
308 case KVM_CAP_PPC_BOOKE_WATCHDOG:
309 case KVM_CAP_PPC_EPR:
311 case KVM_CAP_PPC_SEGSTATE:
312 case KVM_CAP_PPC_HIOR:
313 case KVM_CAP_PPC_PAPR:
315 case KVM_CAP_PPC_UNSET_IRQ:
316 case KVM_CAP_PPC_IRQ_LEVEL:
317 case KVM_CAP_ENABLE_CAP:
318 case KVM_CAP_ONE_REG:
319 case KVM_CAP_IOEVENTFD:
320 case KVM_CAP_DEVICE_CTRL:
323 #ifndef CONFIG_KVM_BOOK3S_64_HV
324 case KVM_CAP_PPC_PAIRED_SINGLES:
325 case KVM_CAP_PPC_OSI:
326 case KVM_CAP_PPC_GET_PVINFO:
327 #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC)
330 #ifdef CONFIG_KVM_MPIC
331 case KVM_CAP_IRQ_MPIC:
335 case KVM_CAP_COALESCED_MMIO:
336 r = KVM_COALESCED_MMIO_PAGE_OFFSET;
339 #ifdef CONFIG_PPC_BOOK3S_64
340 case KVM_CAP_SPAPR_TCE:
341 case KVM_CAP_PPC_ALLOC_HTAB:
342 case KVM_CAP_PPC_RTAS:
343 #ifdef CONFIG_KVM_XICS
344 case KVM_CAP_IRQ_XICS:
348 #endif /* CONFIG_PPC_BOOK3S_64 */
349 #ifdef CONFIG_KVM_BOOK3S_64_HV
350 case KVM_CAP_PPC_SMT:
351 r = threads_per_core;
353 case KVM_CAP_PPC_RMA:
355 /* PPC970 requires an RMA */
356 if (cpu_has_feature(CPU_FTR_ARCH_201))
360 case KVM_CAP_SYNC_MMU:
361 #ifdef CONFIG_KVM_BOOK3S_64_HV
362 r = cpu_has_feature(CPU_FTR_ARCH_206) ? 1 : 0;
363 #elif defined(KVM_ARCH_WANT_MMU_NOTIFIER)
369 #ifdef CONFIG_KVM_BOOK3S_64_HV
370 case KVM_CAP_PPC_HTAB_FD:
375 case KVM_CAP_NR_VCPUS:
377 * Recommending a number of CPUs is somewhat arbitrary; we
378 * return the number of present CPUs for -HV (since a host
379 * will have secondary threads "offline"), and for other KVM
380 * implementations just count online CPUs.
382 #ifdef CONFIG_KVM_BOOK3S_64_HV
383 r = num_present_cpus();
385 r = num_online_cpus();
388 case KVM_CAP_MAX_VCPUS:
391 #ifdef CONFIG_PPC_BOOK3S_64
392 case KVM_CAP_PPC_GET_SMMU_INFO:
404 long kvm_arch_dev_ioctl(struct file *filp,
405 unsigned int ioctl, unsigned long arg)
410 void kvm_arch_free_memslot(struct kvm_memory_slot *free,
411 struct kvm_memory_slot *dont)
413 kvmppc_core_free_memslot(free, dont);
416 int kvm_arch_create_memslot(struct kvm_memory_slot *slot, unsigned long npages)
418 return kvmppc_core_create_memslot(slot, npages);
421 void kvm_arch_memslots_updated(struct kvm *kvm)
425 int kvm_arch_prepare_memory_region(struct kvm *kvm,
426 struct kvm_memory_slot *memslot,
427 struct kvm_userspace_memory_region *mem,
428 enum kvm_mr_change change)
430 return kvmppc_core_prepare_memory_region(kvm, memslot, mem);
433 void kvm_arch_commit_memory_region(struct kvm *kvm,
434 struct kvm_userspace_memory_region *mem,
435 const struct kvm_memory_slot *old,
436 enum kvm_mr_change change)
438 kvmppc_core_commit_memory_region(kvm, mem, old);
441 void kvm_arch_flush_shadow_all(struct kvm *kvm)
445 void kvm_arch_flush_shadow_memslot(struct kvm *kvm,
446 struct kvm_memory_slot *slot)
448 kvmppc_core_flush_memslot(kvm, slot);
451 struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id)
453 struct kvm_vcpu *vcpu;
454 vcpu = kvmppc_core_vcpu_create(kvm, id);
456 vcpu->arch.wqp = &vcpu->wq;
457 kvmppc_create_vcpu_debugfs(vcpu, id);
462 int kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu)
467 void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu)
469 /* Make sure we're not using the vcpu anymore */
470 hrtimer_cancel(&vcpu->arch.dec_timer);
471 tasklet_kill(&vcpu->arch.tasklet);
473 kvmppc_remove_vcpu_debugfs(vcpu);
475 switch (vcpu->arch.irq_type) {
476 case KVMPPC_IRQ_MPIC:
477 kvmppc_mpic_disconnect_vcpu(vcpu->arch.mpic, vcpu);
479 case KVMPPC_IRQ_XICS:
480 kvmppc_xics_free_icp(vcpu);
484 kvmppc_core_vcpu_free(vcpu);
487 void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu)
489 kvm_arch_vcpu_free(vcpu);
492 int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu)
494 return kvmppc_core_pending_dec(vcpu);
498 * low level hrtimer wake routine. Because this runs in hardirq context
499 * we schedule a tasklet to do the real work.
501 enum hrtimer_restart kvmppc_decrementer_wakeup(struct hrtimer *timer)
503 struct kvm_vcpu *vcpu;
505 vcpu = container_of(timer, struct kvm_vcpu, arch.dec_timer);
506 tasklet_schedule(&vcpu->arch.tasklet);
508 return HRTIMER_NORESTART;
511 int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu)
515 hrtimer_init(&vcpu->arch.dec_timer, CLOCK_REALTIME, HRTIMER_MODE_ABS);
516 tasklet_init(&vcpu->arch.tasklet, kvmppc_decrementer_func, (ulong)vcpu);
517 vcpu->arch.dec_timer.function = kvmppc_decrementer_wakeup;
518 vcpu->arch.dec_expires = ~(u64)0;
520 #ifdef CONFIG_KVM_EXIT_TIMING
521 mutex_init(&vcpu->arch.exit_timing_lock);
523 ret = kvmppc_subarch_vcpu_init(vcpu);
527 void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu)
529 kvmppc_mmu_destroy(vcpu);
530 kvmppc_subarch_vcpu_uninit(vcpu);
533 void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
537 * vrsave (formerly usprg0) isn't used by Linux, but may
538 * be used by the guest.
540 * On non-booke this is associated with Altivec and
541 * is handled by code in book3s.c.
543 mtspr(SPRN_VRSAVE, vcpu->arch.vrsave);
545 kvmppc_core_vcpu_load(vcpu, cpu);
548 void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu)
550 kvmppc_core_vcpu_put(vcpu);
552 vcpu->arch.vrsave = mfspr(SPRN_VRSAVE);
556 static void kvmppc_complete_dcr_load(struct kvm_vcpu *vcpu,
559 kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, run->dcr.data);
562 static void kvmppc_complete_mmio_load(struct kvm_vcpu *vcpu,
565 u64 uninitialized_var(gpr);
567 if (run->mmio.len > sizeof(gpr)) {
568 printk(KERN_ERR "bad MMIO length: %d\n", run->mmio.len);
572 if (vcpu->arch.mmio_is_bigendian) {
573 switch (run->mmio.len) {
574 case 8: gpr = *(u64 *)run->mmio.data; break;
575 case 4: gpr = *(u32 *)run->mmio.data; break;
576 case 2: gpr = *(u16 *)run->mmio.data; break;
577 case 1: gpr = *(u8 *)run->mmio.data; break;
580 /* Convert BE data from userland back to LE. */
581 switch (run->mmio.len) {
582 case 4: gpr = ld_le32((u32 *)run->mmio.data); break;
583 case 2: gpr = ld_le16((u16 *)run->mmio.data); break;
584 case 1: gpr = *(u8 *)run->mmio.data; break;
588 if (vcpu->arch.mmio_sign_extend) {
589 switch (run->mmio.len) {
604 kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, gpr);
606 switch (vcpu->arch.io_gpr & KVM_MMIO_REG_EXT_MASK) {
607 case KVM_MMIO_REG_GPR:
608 kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, gpr);
610 case KVM_MMIO_REG_FPR:
611 vcpu->arch.fpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr;
613 #ifdef CONFIG_PPC_BOOK3S
614 case KVM_MMIO_REG_QPR:
615 vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr;
617 case KVM_MMIO_REG_FQPR:
618 vcpu->arch.fpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr;
619 vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr;
627 int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
628 unsigned int rt, unsigned int bytes, int is_bigendian)
632 if (bytes > sizeof(run->mmio.data)) {
633 printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__,
637 run->mmio.phys_addr = vcpu->arch.paddr_accessed;
638 run->mmio.len = bytes;
639 run->mmio.is_write = 0;
641 vcpu->arch.io_gpr = rt;
642 vcpu->arch.mmio_is_bigendian = is_bigendian;
643 vcpu->mmio_needed = 1;
644 vcpu->mmio_is_write = 0;
645 vcpu->arch.mmio_sign_extend = 0;
647 idx = srcu_read_lock(&vcpu->kvm->srcu);
649 ret = kvm_io_bus_read(vcpu->kvm, KVM_MMIO_BUS, run->mmio.phys_addr,
650 bytes, &run->mmio.data);
652 srcu_read_unlock(&vcpu->kvm->srcu, idx);
655 kvmppc_complete_mmio_load(vcpu, run);
656 vcpu->mmio_needed = 0;
660 return EMULATE_DO_MMIO;
663 /* Same as above, but sign extends */
664 int kvmppc_handle_loads(struct kvm_run *run, struct kvm_vcpu *vcpu,
665 unsigned int rt, unsigned int bytes, int is_bigendian)
669 vcpu->arch.mmio_sign_extend = 1;
670 r = kvmppc_handle_load(run, vcpu, rt, bytes, is_bigendian);
675 int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
676 u64 val, unsigned int bytes, int is_bigendian)
678 void *data = run->mmio.data;
681 if (bytes > sizeof(run->mmio.data)) {
682 printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__,
686 run->mmio.phys_addr = vcpu->arch.paddr_accessed;
687 run->mmio.len = bytes;
688 run->mmio.is_write = 1;
689 vcpu->mmio_needed = 1;
690 vcpu->mmio_is_write = 1;
692 /* Store the value at the lowest bytes in 'data'. */
695 case 8: *(u64 *)data = val; break;
696 case 4: *(u32 *)data = val; break;
697 case 2: *(u16 *)data = val; break;
698 case 1: *(u8 *)data = val; break;
701 /* Store LE value into 'data'. */
703 case 4: st_le32(data, val); break;
704 case 2: st_le16(data, val); break;
705 case 1: *(u8 *)data = val; break;
709 idx = srcu_read_lock(&vcpu->kvm->srcu);
711 ret = kvm_io_bus_write(vcpu->kvm, KVM_MMIO_BUS, run->mmio.phys_addr,
712 bytes, &run->mmio.data);
714 srcu_read_unlock(&vcpu->kvm->srcu, idx);
717 vcpu->mmio_needed = 0;
721 return EMULATE_DO_MMIO;
724 int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run)
729 if (vcpu->sigset_active)
730 sigprocmask(SIG_SETMASK, &vcpu->sigset, &sigsaved);
732 if (vcpu->mmio_needed) {
733 if (!vcpu->mmio_is_write)
734 kvmppc_complete_mmio_load(vcpu, run);
735 vcpu->mmio_needed = 0;
736 } else if (vcpu->arch.dcr_needed) {
737 if (!vcpu->arch.dcr_is_write)
738 kvmppc_complete_dcr_load(vcpu, run);
739 vcpu->arch.dcr_needed = 0;
740 } else if (vcpu->arch.osi_needed) {
741 u64 *gprs = run->osi.gprs;
744 for (i = 0; i < 32; i++)
745 kvmppc_set_gpr(vcpu, i, gprs[i]);
746 vcpu->arch.osi_needed = 0;
747 } else if (vcpu->arch.hcall_needed) {
750 kvmppc_set_gpr(vcpu, 3, run->papr_hcall.ret);
751 for (i = 0; i < 9; ++i)
752 kvmppc_set_gpr(vcpu, 4 + i, run->papr_hcall.args[i]);
753 vcpu->arch.hcall_needed = 0;
755 } else if (vcpu->arch.epr_needed) {
756 kvmppc_set_epr(vcpu, run->epr.epr);
757 vcpu->arch.epr_needed = 0;
761 r = kvmppc_vcpu_run(run, vcpu);
763 if (vcpu->sigset_active)
764 sigprocmask(SIG_SETMASK, &sigsaved, NULL);
769 int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq)
771 if (irq->irq == KVM_INTERRUPT_UNSET) {
772 kvmppc_core_dequeue_external(vcpu);
776 kvmppc_core_queue_external(vcpu, irq);
783 static int kvm_vcpu_ioctl_enable_cap(struct kvm_vcpu *vcpu,
784 struct kvm_enable_cap *cap)
792 case KVM_CAP_PPC_OSI:
794 vcpu->arch.osi_enabled = true;
796 case KVM_CAP_PPC_PAPR:
798 vcpu->arch.papr_enabled = true;
800 case KVM_CAP_PPC_EPR:
803 vcpu->arch.epr_flags |= KVMPPC_EPR_USER;
805 vcpu->arch.epr_flags &= ~KVMPPC_EPR_USER;
808 case KVM_CAP_PPC_BOOKE_WATCHDOG:
810 vcpu->arch.watchdog_enabled = true;
813 #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC)
814 case KVM_CAP_SW_TLB: {
815 struct kvm_config_tlb cfg;
816 void __user *user_ptr = (void __user *)(uintptr_t)cap->args[0];
819 if (copy_from_user(&cfg, user_ptr, sizeof(cfg)))
822 r = kvm_vcpu_ioctl_config_tlb(vcpu, &cfg);
826 #ifdef CONFIG_KVM_MPIC
827 case KVM_CAP_IRQ_MPIC: {
829 struct kvm_device *dev;
832 filp = fget(cap->args[0]);
837 dev = kvm_device_from_filp(filp);
839 r = kvmppc_mpic_connect_vcpu(dev, vcpu, cap->args[1]);
845 #ifdef CONFIG_KVM_XICS
846 case KVM_CAP_IRQ_XICS: {
848 struct kvm_device *dev;
851 filp = fget(cap->args[0]);
856 dev = kvm_device_from_filp(filp);
858 r = kvmppc_xics_connect_vcpu(dev, vcpu, cap->args[1]);
863 #endif /* CONFIG_KVM_XICS */
870 r = kvmppc_sanity_check(vcpu);
875 int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu,
876 struct kvm_mp_state *mp_state)
881 int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,
882 struct kvm_mp_state *mp_state)
887 long kvm_arch_vcpu_ioctl(struct file *filp,
888 unsigned int ioctl, unsigned long arg)
890 struct kvm_vcpu *vcpu = filp->private_data;
891 void __user *argp = (void __user *)arg;
895 case KVM_INTERRUPT: {
896 struct kvm_interrupt irq;
898 if (copy_from_user(&irq, argp, sizeof(irq)))
900 r = kvm_vcpu_ioctl_interrupt(vcpu, &irq);
906 struct kvm_enable_cap cap;
908 if (copy_from_user(&cap, argp, sizeof(cap)))
910 r = kvm_vcpu_ioctl_enable_cap(vcpu, &cap);
914 case KVM_SET_ONE_REG:
915 case KVM_GET_ONE_REG:
917 struct kvm_one_reg reg;
919 if (copy_from_user(®, argp, sizeof(reg)))
921 if (ioctl == KVM_SET_ONE_REG)
922 r = kvm_vcpu_ioctl_set_one_reg(vcpu, ®);
924 r = kvm_vcpu_ioctl_get_one_reg(vcpu, ®);
928 #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC)
929 case KVM_DIRTY_TLB: {
930 struct kvm_dirty_tlb dirty;
932 if (copy_from_user(&dirty, argp, sizeof(dirty)))
934 r = kvm_vcpu_ioctl_dirty_tlb(vcpu, &dirty);
946 int kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf)
948 return VM_FAULT_SIGBUS;
951 static int kvm_vm_ioctl_get_pvinfo(struct kvm_ppc_pvinfo *pvinfo)
953 u32 inst_nop = 0x60000000;
954 #ifdef CONFIG_KVM_BOOKE_HV
955 u32 inst_sc1 = 0x44000022;
956 pvinfo->hcall[0] = inst_sc1;
957 pvinfo->hcall[1] = inst_nop;
958 pvinfo->hcall[2] = inst_nop;
959 pvinfo->hcall[3] = inst_nop;
961 u32 inst_lis = 0x3c000000;
962 u32 inst_ori = 0x60000000;
963 u32 inst_sc = 0x44000002;
964 u32 inst_imm_mask = 0xffff;
967 * The hypercall to get into KVM from within guest context is as
970 * lis r0, r0, KVM_SC_MAGIC_R0@h
971 * ori r0, KVM_SC_MAGIC_R0@l
975 pvinfo->hcall[0] = inst_lis | ((KVM_SC_MAGIC_R0 >> 16) & inst_imm_mask);
976 pvinfo->hcall[1] = inst_ori | (KVM_SC_MAGIC_R0 & inst_imm_mask);
977 pvinfo->hcall[2] = inst_sc;
978 pvinfo->hcall[3] = inst_nop;
981 pvinfo->flags = KVM_PPC_PVINFO_FLAGS_EV_IDLE;
986 int kvm_vm_ioctl_irq_line(struct kvm *kvm, struct kvm_irq_level *irq_event,
989 if (!irqchip_in_kernel(kvm))
992 irq_event->status = kvm_set_irq(kvm, KVM_USERSPACE_IRQ_SOURCE_ID,
993 irq_event->irq, irq_event->level,
998 long kvm_arch_vm_ioctl(struct file *filp,
999 unsigned int ioctl, unsigned long arg)
1001 struct kvm *kvm __maybe_unused = filp->private_data;
1002 void __user *argp = (void __user *)arg;
1006 case KVM_PPC_GET_PVINFO: {
1007 struct kvm_ppc_pvinfo pvinfo;
1008 memset(&pvinfo, 0, sizeof(pvinfo));
1009 r = kvm_vm_ioctl_get_pvinfo(&pvinfo);
1010 if (copy_to_user(argp, &pvinfo, sizeof(pvinfo))) {
1017 #ifdef CONFIG_PPC_BOOK3S_64
1018 case KVM_CREATE_SPAPR_TCE: {
1019 struct kvm_create_spapr_tce create_tce;
1022 if (copy_from_user(&create_tce, argp, sizeof(create_tce)))
1024 r = kvm_vm_ioctl_create_spapr_tce(kvm, &create_tce);
1027 #endif /* CONFIG_PPC_BOOK3S_64 */
1029 #ifdef CONFIG_KVM_BOOK3S_64_HV
1030 case KVM_ALLOCATE_RMA: {
1031 struct kvm_allocate_rma rma;
1032 struct kvm *kvm = filp->private_data;
1034 r = kvm_vm_ioctl_allocate_rma(kvm, &rma);
1035 if (r >= 0 && copy_to_user(argp, &rma, sizeof(rma)))
1040 case KVM_PPC_ALLOCATE_HTAB: {
1044 if (get_user(htab_order, (u32 __user *)argp))
1046 r = kvmppc_alloc_reset_hpt(kvm, &htab_order);
1050 if (put_user(htab_order, (u32 __user *)argp))
1056 case KVM_PPC_GET_HTAB_FD: {
1057 struct kvm_get_htab_fd ghf;
1060 if (copy_from_user(&ghf, argp, sizeof(ghf)))
1062 r = kvm_vm_ioctl_get_htab_fd(kvm, &ghf);
1065 #endif /* CONFIG_KVM_BOOK3S_64_HV */
1067 #ifdef CONFIG_PPC_BOOK3S_64
1068 case KVM_PPC_GET_SMMU_INFO: {
1069 struct kvm_ppc_smmu_info info;
1071 memset(&info, 0, sizeof(info));
1072 r = kvm_vm_ioctl_get_smmu_info(kvm, &info);
1073 if (r >= 0 && copy_to_user(argp, &info, sizeof(info)))
1077 case KVM_PPC_RTAS_DEFINE_TOKEN: {
1078 struct kvm *kvm = filp->private_data;
1080 r = kvm_vm_ioctl_rtas_define_token(kvm, argp);
1083 #endif /* CONFIG_PPC_BOOK3S_64 */
1092 static unsigned long lpid_inuse[BITS_TO_LONGS(KVMPPC_NR_LPIDS)];
1093 static unsigned long nr_lpids;
1095 long kvmppc_alloc_lpid(void)
1100 lpid = find_first_zero_bit(lpid_inuse, KVMPPC_NR_LPIDS);
1101 if (lpid >= nr_lpids) {
1102 pr_err("%s: No LPIDs free\n", __func__);
1105 } while (test_and_set_bit(lpid, lpid_inuse));
1110 void kvmppc_claim_lpid(long lpid)
1112 set_bit(lpid, lpid_inuse);
1115 void kvmppc_free_lpid(long lpid)
1117 clear_bit(lpid, lpid_inuse);
1120 void kvmppc_init_lpid(unsigned long nr_lpids_param)
1122 nr_lpids = min_t(unsigned long, KVMPPC_NR_LPIDS, nr_lpids_param);
1123 memset(lpid_inuse, 0, sizeof(lpid_inuse));
1126 int kvm_arch_init(void *opaque)
1131 void kvm_arch_exit(void)