1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (C) 2009. SUSE Linux Products GmbH. All rights reserved.
6 * Alexander Graf <agraf@suse.de>
7 * Kevin Wolf <mail@kevin-wolf.de>
10 * This file is derived from arch/powerpc/kvm/44x.c,
11 * by Hollis Blanchard <hollisb@us.ibm.com>.
14 #include <linux/kvm_host.h>
15 #include <linux/err.h>
16 #include <linux/export.h>
17 #include <linux/slab.h>
18 #include <linux/module.h>
19 #include <linux/miscdevice.h>
20 #include <linux/gfp.h>
21 #include <linux/sched.h>
22 #include <linux/vmalloc.h>
23 #include <linux/highmem.h>
26 #include <asm/cputable.h>
27 #include <asm/cacheflush.h>
28 #include <linux/uaccess.h>
30 #include <asm/kvm_ppc.h>
31 #include <asm/kvm_book3s.h>
32 #include <asm/mmu_context.h>
39 /* #define EXIT_DEBUG */
41 const struct _kvm_stats_desc kvm_vm_stats_desc[] = {
42 KVM_GENERIC_VM_STATS(),
43 STATS_DESC_ICOUNTER(VM, num_2M_pages),
44 STATS_DESC_ICOUNTER(VM, num_1G_pages)
46 static_assert(ARRAY_SIZE(kvm_vm_stats_desc) ==
47 sizeof(struct kvm_vm_stat) / sizeof(u64));
49 const struct kvm_stats_header kvm_vm_stats_header = {
50 .name_size = KVM_STATS_NAME_SIZE,
51 .num_desc = ARRAY_SIZE(kvm_vm_stats_desc),
52 .id_offset = sizeof(struct kvm_stats_header),
53 .desc_offset = sizeof(struct kvm_stats_header) + KVM_STATS_NAME_SIZE,
54 .data_offset = sizeof(struct kvm_stats_header) + KVM_STATS_NAME_SIZE +
55 sizeof(kvm_vm_stats_desc),
58 const struct _kvm_stats_desc kvm_vcpu_stats_desc[] = {
59 KVM_GENERIC_VCPU_STATS(),
60 STATS_DESC_COUNTER(VCPU, sum_exits),
61 STATS_DESC_COUNTER(VCPU, mmio_exits),
62 STATS_DESC_COUNTER(VCPU, signal_exits),
63 STATS_DESC_COUNTER(VCPU, light_exits),
64 STATS_DESC_COUNTER(VCPU, itlb_real_miss_exits),
65 STATS_DESC_COUNTER(VCPU, itlb_virt_miss_exits),
66 STATS_DESC_COUNTER(VCPU, dtlb_real_miss_exits),
67 STATS_DESC_COUNTER(VCPU, dtlb_virt_miss_exits),
68 STATS_DESC_COUNTER(VCPU, syscall_exits),
69 STATS_DESC_COUNTER(VCPU, isi_exits),
70 STATS_DESC_COUNTER(VCPU, dsi_exits),
71 STATS_DESC_COUNTER(VCPU, emulated_inst_exits),
72 STATS_DESC_COUNTER(VCPU, dec_exits),
73 STATS_DESC_COUNTER(VCPU, ext_intr_exits),
74 STATS_DESC_TIME_NSEC(VCPU, halt_wait_ns),
75 STATS_DESC_COUNTER(VCPU, halt_successful_wait),
76 STATS_DESC_COUNTER(VCPU, dbell_exits),
77 STATS_DESC_COUNTER(VCPU, gdbell_exits),
78 STATS_DESC_COUNTER(VCPU, ld),
79 STATS_DESC_COUNTER(VCPU, st),
80 STATS_DESC_COUNTER(VCPU, pf_storage),
81 STATS_DESC_COUNTER(VCPU, pf_instruc),
82 STATS_DESC_COUNTER(VCPU, sp_storage),
83 STATS_DESC_COUNTER(VCPU, sp_instruc),
84 STATS_DESC_COUNTER(VCPU, queue_intr),
85 STATS_DESC_COUNTER(VCPU, ld_slow),
86 STATS_DESC_COUNTER(VCPU, st_slow),
87 STATS_DESC_COUNTER(VCPU, pthru_all),
88 STATS_DESC_COUNTER(VCPU, pthru_host),
89 STATS_DESC_COUNTER(VCPU, pthru_bad_aff)
91 static_assert(ARRAY_SIZE(kvm_vcpu_stats_desc) ==
92 sizeof(struct kvm_vcpu_stat) / sizeof(u64));
94 const struct kvm_stats_header kvm_vcpu_stats_header = {
95 .name_size = KVM_STATS_NAME_SIZE,
96 .num_desc = ARRAY_SIZE(kvm_vcpu_stats_desc),
97 .id_offset = sizeof(struct kvm_stats_header),
98 .desc_offset = sizeof(struct kvm_stats_header) + KVM_STATS_NAME_SIZE,
99 .data_offset = sizeof(struct kvm_stats_header) + KVM_STATS_NAME_SIZE +
100 sizeof(kvm_vcpu_stats_desc),
103 static inline void kvmppc_update_int_pending(struct kvm_vcpu *vcpu,
104 unsigned long pending_now, unsigned long old_pending)
106 if (is_kvmppc_hv_enabled(vcpu->kvm))
109 kvmppc_set_int_pending(vcpu, 1);
110 else if (old_pending)
111 kvmppc_set_int_pending(vcpu, 0);
114 static inline bool kvmppc_critical_section(struct kvm_vcpu *vcpu)
120 if (is_kvmppc_hv_enabled(vcpu->kvm))
123 crit_raw = kvmppc_get_critical(vcpu);
124 crit_r1 = kvmppc_get_gpr(vcpu, 1);
126 /* Truncate crit indicators in 32 bit mode */
127 if (!(kvmppc_get_msr(vcpu) & MSR_SF)) {
128 crit_raw &= 0xffffffff;
129 crit_r1 &= 0xffffffff;
132 /* Critical section when crit == r1 */
133 crit = (crit_raw == crit_r1);
134 /* ... and we're in supervisor mode */
135 crit = crit && !(kvmppc_get_msr(vcpu) & MSR_PR);
140 void kvmppc_inject_interrupt(struct kvm_vcpu *vcpu, int vec, u64 flags)
142 vcpu->kvm->arch.kvm_ops->inject_interrupt(vcpu, vec, flags);
145 static int kvmppc_book3s_vec2irqprio(unsigned int vec)
150 case 0x100: prio = BOOK3S_IRQPRIO_SYSTEM_RESET; break;
151 case 0x200: prio = BOOK3S_IRQPRIO_MACHINE_CHECK; break;
152 case 0x300: prio = BOOK3S_IRQPRIO_DATA_STORAGE; break;
153 case 0x380: prio = BOOK3S_IRQPRIO_DATA_SEGMENT; break;
154 case 0x400: prio = BOOK3S_IRQPRIO_INST_STORAGE; break;
155 case 0x480: prio = BOOK3S_IRQPRIO_INST_SEGMENT; break;
156 case 0x500: prio = BOOK3S_IRQPRIO_EXTERNAL; break;
157 case 0x600: prio = BOOK3S_IRQPRIO_ALIGNMENT; break;
158 case 0x700: prio = BOOK3S_IRQPRIO_PROGRAM; break;
159 case 0x800: prio = BOOK3S_IRQPRIO_FP_UNAVAIL; break;
160 case 0x900: prio = BOOK3S_IRQPRIO_DECREMENTER; break;
161 case 0xc00: prio = BOOK3S_IRQPRIO_SYSCALL; break;
162 case 0xd00: prio = BOOK3S_IRQPRIO_DEBUG; break;
163 case 0xf20: prio = BOOK3S_IRQPRIO_ALTIVEC; break;
164 case 0xf40: prio = BOOK3S_IRQPRIO_VSX; break;
165 case 0xf60: prio = BOOK3S_IRQPRIO_FAC_UNAVAIL; break;
166 default: prio = BOOK3S_IRQPRIO_MAX; break;
172 void kvmppc_book3s_dequeue_irqprio(struct kvm_vcpu *vcpu,
175 unsigned long old_pending = vcpu->arch.pending_exceptions;
177 clear_bit(kvmppc_book3s_vec2irqprio(vec),
178 &vcpu->arch.pending_exceptions);
180 kvmppc_update_int_pending(vcpu, vcpu->arch.pending_exceptions,
184 void kvmppc_book3s_queue_irqprio(struct kvm_vcpu *vcpu, unsigned int vec)
186 vcpu->stat.queue_intr++;
188 set_bit(kvmppc_book3s_vec2irqprio(vec),
189 &vcpu->arch.pending_exceptions);
191 printk(KERN_INFO "Queueing interrupt %x\n", vec);
194 EXPORT_SYMBOL_GPL(kvmppc_book3s_queue_irqprio);
196 void kvmppc_core_queue_machine_check(struct kvm_vcpu *vcpu, ulong flags)
198 /* might as well deliver this straight away */
199 kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_MACHINE_CHECK, flags);
201 EXPORT_SYMBOL_GPL(kvmppc_core_queue_machine_check);
203 void kvmppc_core_queue_syscall(struct kvm_vcpu *vcpu)
205 kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_SYSCALL, 0);
207 EXPORT_SYMBOL(kvmppc_core_queue_syscall);
209 void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong flags)
211 /* might as well deliver this straight away */
212 kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_PROGRAM, flags);
214 EXPORT_SYMBOL_GPL(kvmppc_core_queue_program);
216 void kvmppc_core_queue_fpunavail(struct kvm_vcpu *vcpu)
218 /* might as well deliver this straight away */
219 kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_FP_UNAVAIL, 0);
222 void kvmppc_core_queue_vec_unavail(struct kvm_vcpu *vcpu)
224 /* might as well deliver this straight away */
225 kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_ALTIVEC, 0);
228 void kvmppc_core_queue_vsx_unavail(struct kvm_vcpu *vcpu)
230 /* might as well deliver this straight away */
231 kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_VSX, 0);
234 void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu)
236 kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_DECREMENTER);
238 EXPORT_SYMBOL_GPL(kvmppc_core_queue_dec);
240 int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu)
242 return test_bit(BOOK3S_IRQPRIO_DECREMENTER, &vcpu->arch.pending_exceptions);
244 EXPORT_SYMBOL_GPL(kvmppc_core_pending_dec);
246 void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu)
248 kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_DECREMENTER);
250 EXPORT_SYMBOL_GPL(kvmppc_core_dequeue_dec);
252 void kvmppc_core_queue_external(struct kvm_vcpu *vcpu,
253 struct kvm_interrupt *irq)
256 * This case (KVM_INTERRUPT_SET) should never actually arise for
257 * a pseries guest (because pseries guests expect their interrupt
258 * controllers to continue asserting an external interrupt request
259 * until it is acknowledged at the interrupt controller), but is
260 * included to avoid ABI breakage and potentially for other
263 * There is a subtlety here: HV KVM does not test the
264 * external_oneshot flag in the code that synthesizes
265 * external interrupts for the guest just before entering
266 * the guest. That is OK even if userspace did do a
267 * KVM_INTERRUPT_SET on a pseries guest vcpu, because the
268 * caller (kvm_vcpu_ioctl_interrupt) does a kvm_vcpu_kick()
269 * which ends up doing a smp_send_reschedule(), which will
270 * pull the guest all the way out to the host, meaning that
271 * we will call kvmppc_core_prepare_to_enter() before entering
272 * the guest again, and that will handle the external_oneshot
275 if (irq->irq == KVM_INTERRUPT_SET)
276 vcpu->arch.external_oneshot = 1;
278 kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_EXTERNAL);
281 void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu)
283 kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_EXTERNAL);
286 void kvmppc_core_queue_data_storage(struct kvm_vcpu *vcpu, ulong dar,
289 kvmppc_set_dar(vcpu, dar);
290 kvmppc_set_dsisr(vcpu, flags);
291 kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_DATA_STORAGE, 0);
293 EXPORT_SYMBOL_GPL(kvmppc_core_queue_data_storage);
295 void kvmppc_core_queue_inst_storage(struct kvm_vcpu *vcpu, ulong flags)
297 kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_INST_STORAGE, flags);
299 EXPORT_SYMBOL_GPL(kvmppc_core_queue_inst_storage);
301 static int kvmppc_book3s_irqprio_deliver(struct kvm_vcpu *vcpu,
302 unsigned int priority)
306 bool crit = kvmppc_critical_section(vcpu);
309 case BOOK3S_IRQPRIO_DECREMENTER:
310 deliver = (kvmppc_get_msr(vcpu) & MSR_EE) && !crit;
311 vec = BOOK3S_INTERRUPT_DECREMENTER;
313 case BOOK3S_IRQPRIO_EXTERNAL:
314 deliver = (kvmppc_get_msr(vcpu) & MSR_EE) && !crit;
315 vec = BOOK3S_INTERRUPT_EXTERNAL;
317 case BOOK3S_IRQPRIO_SYSTEM_RESET:
318 vec = BOOK3S_INTERRUPT_SYSTEM_RESET;
320 case BOOK3S_IRQPRIO_MACHINE_CHECK:
321 vec = BOOK3S_INTERRUPT_MACHINE_CHECK;
323 case BOOK3S_IRQPRIO_DATA_STORAGE:
324 vec = BOOK3S_INTERRUPT_DATA_STORAGE;
326 case BOOK3S_IRQPRIO_INST_STORAGE:
327 vec = BOOK3S_INTERRUPT_INST_STORAGE;
329 case BOOK3S_IRQPRIO_DATA_SEGMENT:
330 vec = BOOK3S_INTERRUPT_DATA_SEGMENT;
332 case BOOK3S_IRQPRIO_INST_SEGMENT:
333 vec = BOOK3S_INTERRUPT_INST_SEGMENT;
335 case BOOK3S_IRQPRIO_ALIGNMENT:
336 vec = BOOK3S_INTERRUPT_ALIGNMENT;
338 case BOOK3S_IRQPRIO_PROGRAM:
339 vec = BOOK3S_INTERRUPT_PROGRAM;
341 case BOOK3S_IRQPRIO_VSX:
342 vec = BOOK3S_INTERRUPT_VSX;
344 case BOOK3S_IRQPRIO_ALTIVEC:
345 vec = BOOK3S_INTERRUPT_ALTIVEC;
347 case BOOK3S_IRQPRIO_FP_UNAVAIL:
348 vec = BOOK3S_INTERRUPT_FP_UNAVAIL;
350 case BOOK3S_IRQPRIO_SYSCALL:
351 vec = BOOK3S_INTERRUPT_SYSCALL;
353 case BOOK3S_IRQPRIO_DEBUG:
354 vec = BOOK3S_INTERRUPT_TRACE;
356 case BOOK3S_IRQPRIO_PERFORMANCE_MONITOR:
357 vec = BOOK3S_INTERRUPT_PERFMON;
359 case BOOK3S_IRQPRIO_FAC_UNAVAIL:
360 vec = BOOK3S_INTERRUPT_FAC_UNAVAIL;
364 printk(KERN_ERR "KVM: Unknown interrupt: 0x%x\n", priority);
369 printk(KERN_INFO "Deliver interrupt 0x%x? %x\n", vec, deliver);
373 kvmppc_inject_interrupt(vcpu, vec, 0);
379 * This function determines if an irqprio should be cleared once issued.
381 static bool clear_irqprio(struct kvm_vcpu *vcpu, unsigned int priority)
384 case BOOK3S_IRQPRIO_DECREMENTER:
385 /* DEC interrupts get cleared by mtdec */
387 case BOOK3S_IRQPRIO_EXTERNAL:
389 * External interrupts get cleared by userspace
390 * except when set by the KVM_INTERRUPT ioctl with
391 * KVM_INTERRUPT_SET (not KVM_INTERRUPT_SET_LEVEL).
393 if (vcpu->arch.external_oneshot) {
394 vcpu->arch.external_oneshot = 0;
403 int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu)
405 unsigned long *pending = &vcpu->arch.pending_exceptions;
406 unsigned long old_pending = vcpu->arch.pending_exceptions;
407 unsigned int priority;
410 if (vcpu->arch.pending_exceptions)
411 printk(KERN_EMERG "KVM: Check pending: %lx\n", vcpu->arch.pending_exceptions);
413 priority = __ffs(*pending);
414 while (priority < BOOK3S_IRQPRIO_MAX) {
415 if (kvmppc_book3s_irqprio_deliver(vcpu, priority) &&
416 clear_irqprio(vcpu, priority)) {
417 clear_bit(priority, &vcpu->arch.pending_exceptions);
421 priority = find_next_bit(pending,
422 BITS_PER_BYTE * sizeof(*pending),
426 /* Tell the guest about our interrupt status */
427 kvmppc_update_int_pending(vcpu, *pending, old_pending);
431 EXPORT_SYMBOL_GPL(kvmppc_core_prepare_to_enter);
433 kvm_pfn_t kvmppc_gpa_to_pfn(struct kvm_vcpu *vcpu, gpa_t gpa, bool writing,
436 ulong mp_pa = vcpu->arch.magic_page_pa & KVM_PAM;
437 gfn_t gfn = gpa >> PAGE_SHIFT;
439 if (!(kvmppc_get_msr(vcpu) & MSR_SF))
440 mp_pa = (uint32_t)mp_pa;
442 /* Magic page override */
444 if (unlikely(mp_pa) && unlikely((gpa & KVM_PAM) == mp_pa)) {
445 ulong shared_page = ((ulong)vcpu->arch.shared) & PAGE_MASK;
448 pfn = (kvm_pfn_t)virt_to_phys((void*)shared_page) >> PAGE_SHIFT;
449 get_page(pfn_to_page(pfn));
455 return gfn_to_pfn_prot(vcpu->kvm, gfn, writing, writable);
457 EXPORT_SYMBOL_GPL(kvmppc_gpa_to_pfn);
459 int kvmppc_xlate(struct kvm_vcpu *vcpu, ulong eaddr, enum xlate_instdata xlid,
460 enum xlate_readwrite xlrw, struct kvmppc_pte *pte)
462 bool data = (xlid == XLATE_DATA);
463 bool iswrite = (xlrw == XLATE_WRITE);
464 int relocated = (kvmppc_get_msr(vcpu) & (data ? MSR_DR : MSR_IR));
468 r = vcpu->arch.mmu.xlate(vcpu, eaddr, pte, data, iswrite);
471 pte->raddr = eaddr & KVM_PAM;
472 pte->vpage = VSID_REAL | eaddr >> 12;
473 pte->may_read = true;
474 pte->may_write = true;
475 pte->may_execute = true;
478 if ((kvmppc_get_msr(vcpu) & (MSR_IR | MSR_DR)) == MSR_DR &&
480 if ((vcpu->arch.hflags & BOOK3S_HFLAG_SPLIT_HACK) &&
481 ((eaddr & SPLIT_HACK_MASK) == SPLIT_HACK_OFFS))
482 pte->raddr &= ~SPLIT_HACK_MASK;
489 int kvmppc_load_last_inst(struct kvm_vcpu *vcpu,
490 enum instruction_fetch_type type, u32 *inst)
492 ulong pc = kvmppc_get_pc(vcpu);
498 r = kvmppc_ld(vcpu, &pc, sizeof(u32), inst, false);
499 if (r == EMULATE_DONE)
502 return EMULATE_AGAIN;
504 EXPORT_SYMBOL_GPL(kvmppc_load_last_inst);
506 int kvmppc_subarch_vcpu_init(struct kvm_vcpu *vcpu)
511 void kvmppc_subarch_vcpu_uninit(struct kvm_vcpu *vcpu)
515 int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
516 struct kvm_sregs *sregs)
521 ret = vcpu->kvm->arch.kvm_ops->get_sregs(vcpu, sregs);
527 int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
528 struct kvm_sregs *sregs)
533 ret = vcpu->kvm->arch.kvm_ops->set_sregs(vcpu, sregs);
539 int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
543 regs->pc = kvmppc_get_pc(vcpu);
544 regs->cr = kvmppc_get_cr(vcpu);
545 regs->ctr = kvmppc_get_ctr(vcpu);
546 regs->lr = kvmppc_get_lr(vcpu);
547 regs->xer = kvmppc_get_xer(vcpu);
548 regs->msr = kvmppc_get_msr(vcpu);
549 regs->srr0 = kvmppc_get_srr0(vcpu);
550 regs->srr1 = kvmppc_get_srr1(vcpu);
551 regs->pid = vcpu->arch.pid;
552 regs->sprg0 = kvmppc_get_sprg0(vcpu);
553 regs->sprg1 = kvmppc_get_sprg1(vcpu);
554 regs->sprg2 = kvmppc_get_sprg2(vcpu);
555 regs->sprg3 = kvmppc_get_sprg3(vcpu);
556 regs->sprg4 = kvmppc_get_sprg4(vcpu);
557 regs->sprg5 = kvmppc_get_sprg5(vcpu);
558 regs->sprg6 = kvmppc_get_sprg6(vcpu);
559 regs->sprg7 = kvmppc_get_sprg7(vcpu);
561 for (i = 0; i < ARRAY_SIZE(regs->gpr); i++)
562 regs->gpr[i] = kvmppc_get_gpr(vcpu, i);
567 int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
571 kvmppc_set_pc(vcpu, regs->pc);
572 kvmppc_set_cr(vcpu, regs->cr);
573 kvmppc_set_ctr(vcpu, regs->ctr);
574 kvmppc_set_lr(vcpu, regs->lr);
575 kvmppc_set_xer(vcpu, regs->xer);
576 kvmppc_set_msr(vcpu, regs->msr);
577 kvmppc_set_srr0(vcpu, regs->srr0);
578 kvmppc_set_srr1(vcpu, regs->srr1);
579 kvmppc_set_sprg0(vcpu, regs->sprg0);
580 kvmppc_set_sprg1(vcpu, regs->sprg1);
581 kvmppc_set_sprg2(vcpu, regs->sprg2);
582 kvmppc_set_sprg3(vcpu, regs->sprg3);
583 kvmppc_set_sprg4(vcpu, regs->sprg4);
584 kvmppc_set_sprg5(vcpu, regs->sprg5);
585 kvmppc_set_sprg6(vcpu, regs->sprg6);
586 kvmppc_set_sprg7(vcpu, regs->sprg7);
588 for (i = 0; i < ARRAY_SIZE(regs->gpr); i++)
589 kvmppc_set_gpr(vcpu, i, regs->gpr[i]);
594 int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
599 int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
604 int kvmppc_get_one_reg(struct kvm_vcpu *vcpu, u64 id,
605 union kvmppc_one_reg *val)
610 r = vcpu->kvm->arch.kvm_ops->get_one_reg(vcpu, id, val);
614 case KVM_REG_PPC_DAR:
615 *val = get_reg_val(id, kvmppc_get_dar(vcpu));
617 case KVM_REG_PPC_DSISR:
618 *val = get_reg_val(id, kvmppc_get_dsisr(vcpu));
620 case KVM_REG_PPC_FPR0 ... KVM_REG_PPC_FPR31:
621 i = id - KVM_REG_PPC_FPR0;
622 *val = get_reg_val(id, VCPU_FPR(vcpu, i));
624 case KVM_REG_PPC_FPSCR:
625 *val = get_reg_val(id, vcpu->arch.fp.fpscr);
628 case KVM_REG_PPC_VSR0 ... KVM_REG_PPC_VSR31:
629 if (cpu_has_feature(CPU_FTR_VSX)) {
630 i = id - KVM_REG_PPC_VSR0;
631 val->vsxval[0] = vcpu->arch.fp.fpr[i][0];
632 val->vsxval[1] = vcpu->arch.fp.fpr[i][1];
637 #endif /* CONFIG_VSX */
638 case KVM_REG_PPC_DEBUG_INST:
639 *val = get_reg_val(id, INS_TW);
641 #ifdef CONFIG_KVM_XICS
642 case KVM_REG_PPC_ICP_STATE:
643 if (!vcpu->arch.icp && !vcpu->arch.xive_vcpu) {
648 *val = get_reg_val(id, kvmppc_xive_get_icp(vcpu));
650 *val = get_reg_val(id, kvmppc_xics_get_icp(vcpu));
652 #endif /* CONFIG_KVM_XICS */
653 #ifdef CONFIG_KVM_XIVE
654 case KVM_REG_PPC_VP_STATE:
655 if (!vcpu->arch.xive_vcpu) {
660 r = kvmppc_xive_native_get_vp(vcpu, val);
664 #endif /* CONFIG_KVM_XIVE */
665 case KVM_REG_PPC_FSCR:
666 *val = get_reg_val(id, vcpu->arch.fscr);
668 case KVM_REG_PPC_TAR:
669 *val = get_reg_val(id, vcpu->arch.tar);
671 case KVM_REG_PPC_EBBHR:
672 *val = get_reg_val(id, vcpu->arch.ebbhr);
674 case KVM_REG_PPC_EBBRR:
675 *val = get_reg_val(id, vcpu->arch.ebbrr);
677 case KVM_REG_PPC_BESCR:
678 *val = get_reg_val(id, vcpu->arch.bescr);
681 *val = get_reg_val(id, vcpu->arch.ic);
692 int kvmppc_set_one_reg(struct kvm_vcpu *vcpu, u64 id,
693 union kvmppc_one_reg *val)
698 r = vcpu->kvm->arch.kvm_ops->set_one_reg(vcpu, id, val);
702 case KVM_REG_PPC_DAR:
703 kvmppc_set_dar(vcpu, set_reg_val(id, *val));
705 case KVM_REG_PPC_DSISR:
706 kvmppc_set_dsisr(vcpu, set_reg_val(id, *val));
708 case KVM_REG_PPC_FPR0 ... KVM_REG_PPC_FPR31:
709 i = id - KVM_REG_PPC_FPR0;
710 VCPU_FPR(vcpu, i) = set_reg_val(id, *val);
712 case KVM_REG_PPC_FPSCR:
713 vcpu->arch.fp.fpscr = set_reg_val(id, *val);
716 case KVM_REG_PPC_VSR0 ... KVM_REG_PPC_VSR31:
717 if (cpu_has_feature(CPU_FTR_VSX)) {
718 i = id - KVM_REG_PPC_VSR0;
719 vcpu->arch.fp.fpr[i][0] = val->vsxval[0];
720 vcpu->arch.fp.fpr[i][1] = val->vsxval[1];
725 #endif /* CONFIG_VSX */
726 #ifdef CONFIG_KVM_XICS
727 case KVM_REG_PPC_ICP_STATE:
728 if (!vcpu->arch.icp && !vcpu->arch.xive_vcpu) {
733 r = kvmppc_xive_set_icp(vcpu, set_reg_val(id, *val));
735 r = kvmppc_xics_set_icp(vcpu, set_reg_val(id, *val));
737 #endif /* CONFIG_KVM_XICS */
738 #ifdef CONFIG_KVM_XIVE
739 case KVM_REG_PPC_VP_STATE:
740 if (!vcpu->arch.xive_vcpu) {
745 r = kvmppc_xive_native_set_vp(vcpu, val);
749 #endif /* CONFIG_KVM_XIVE */
750 case KVM_REG_PPC_FSCR:
751 vcpu->arch.fscr = set_reg_val(id, *val);
753 case KVM_REG_PPC_TAR:
754 vcpu->arch.tar = set_reg_val(id, *val);
756 case KVM_REG_PPC_EBBHR:
757 vcpu->arch.ebbhr = set_reg_val(id, *val);
759 case KVM_REG_PPC_EBBRR:
760 vcpu->arch.ebbrr = set_reg_val(id, *val);
762 case KVM_REG_PPC_BESCR:
763 vcpu->arch.bescr = set_reg_val(id, *val);
766 vcpu->arch.ic = set_reg_val(id, *val);
777 void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
779 vcpu->kvm->arch.kvm_ops->vcpu_load(vcpu, cpu);
782 void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu)
784 vcpu->kvm->arch.kvm_ops->vcpu_put(vcpu);
787 void kvmppc_set_msr(struct kvm_vcpu *vcpu, u64 msr)
789 vcpu->kvm->arch.kvm_ops->set_msr(vcpu, msr);
791 EXPORT_SYMBOL_GPL(kvmppc_set_msr);
793 int kvmppc_vcpu_run(struct kvm_vcpu *vcpu)
795 return vcpu->kvm->arch.kvm_ops->vcpu_run(vcpu);
798 int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
799 struct kvm_translation *tr)
804 int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
805 struct kvm_guest_debug *dbg)
808 vcpu->guest_debug = dbg->control;
813 void kvmppc_decrementer_func(struct kvm_vcpu *vcpu)
815 kvmppc_core_queue_dec(vcpu);
819 int kvmppc_core_vcpu_create(struct kvm_vcpu *vcpu)
821 return vcpu->kvm->arch.kvm_ops->vcpu_create(vcpu);
824 void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu)
826 vcpu->kvm->arch.kvm_ops->vcpu_free(vcpu);
829 int kvmppc_core_check_requests(struct kvm_vcpu *vcpu)
831 return vcpu->kvm->arch.kvm_ops->check_requests(vcpu);
834 void kvm_arch_sync_dirty_log(struct kvm *kvm, struct kvm_memory_slot *memslot)
839 int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, struct kvm_dirty_log *log)
841 return kvm->arch.kvm_ops->get_dirty_log(kvm, log);
844 void kvmppc_core_free_memslot(struct kvm *kvm, struct kvm_memory_slot *slot)
846 kvm->arch.kvm_ops->free_memslot(slot);
849 void kvmppc_core_flush_memslot(struct kvm *kvm, struct kvm_memory_slot *memslot)
851 kvm->arch.kvm_ops->flush_memslot(kvm, memslot);
854 int kvmppc_core_prepare_memory_region(struct kvm *kvm,
855 struct kvm_memory_slot *memslot,
856 const struct kvm_userspace_memory_region *mem,
857 enum kvm_mr_change change)
859 return kvm->arch.kvm_ops->prepare_memory_region(kvm, memslot, mem,
863 void kvmppc_core_commit_memory_region(struct kvm *kvm,
864 const struct kvm_userspace_memory_region *mem,
865 const struct kvm_memory_slot *old,
866 const struct kvm_memory_slot *new,
867 enum kvm_mr_change change)
869 kvm->arch.kvm_ops->commit_memory_region(kvm, mem, old, new, change);
872 bool kvm_unmap_gfn_range(struct kvm *kvm, struct kvm_gfn_range *range)
874 return kvm->arch.kvm_ops->unmap_gfn_range(kvm, range);
877 bool kvm_age_gfn(struct kvm *kvm, struct kvm_gfn_range *range)
879 return kvm->arch.kvm_ops->age_gfn(kvm, range);
882 bool kvm_test_age_gfn(struct kvm *kvm, struct kvm_gfn_range *range)
884 return kvm->arch.kvm_ops->test_age_gfn(kvm, range);
887 bool kvm_set_spte_gfn(struct kvm *kvm, struct kvm_gfn_range *range)
889 return kvm->arch.kvm_ops->set_spte_gfn(kvm, range);
892 int kvmppc_core_init_vm(struct kvm *kvm)
896 INIT_LIST_HEAD_RCU(&kvm->arch.spapr_tce_tables);
897 INIT_LIST_HEAD(&kvm->arch.rtas_tokens);
898 mutex_init(&kvm->arch.rtas_token_lock);
901 return kvm->arch.kvm_ops->init_vm(kvm);
904 void kvmppc_core_destroy_vm(struct kvm *kvm)
906 kvm->arch.kvm_ops->destroy_vm(kvm);
909 kvmppc_rtas_tokens_free(kvm);
910 WARN_ON(!list_empty(&kvm->arch.spapr_tce_tables));
913 #ifdef CONFIG_KVM_XICS
915 * Free the XIVE and XICS devices which are not directly freed by the
916 * device 'release' method
918 kfree(kvm->arch.xive_devices.native);
919 kvm->arch.xive_devices.native = NULL;
920 kfree(kvm->arch.xive_devices.xics_on_xive);
921 kvm->arch.xive_devices.xics_on_xive = NULL;
922 kfree(kvm->arch.xics_device);
923 kvm->arch.xics_device = NULL;
924 #endif /* CONFIG_KVM_XICS */
927 int kvmppc_h_logical_ci_load(struct kvm_vcpu *vcpu)
929 unsigned long size = kvmppc_get_gpr(vcpu, 4);
930 unsigned long addr = kvmppc_get_gpr(vcpu, 5);
935 if (!is_power_of_2(size) || (size > sizeof(buf)))
938 srcu_idx = srcu_read_lock(&vcpu->kvm->srcu);
939 ret = kvm_io_bus_read(vcpu, KVM_MMIO_BUS, addr, size, &buf);
940 srcu_read_unlock(&vcpu->kvm->srcu, srcu_idx);
946 kvmppc_set_gpr(vcpu, 4, *(u8 *)&buf);
950 kvmppc_set_gpr(vcpu, 4, be16_to_cpu(*(__be16 *)&buf));
954 kvmppc_set_gpr(vcpu, 4, be32_to_cpu(*(__be32 *)&buf));
958 kvmppc_set_gpr(vcpu, 4, be64_to_cpu(*(__be64 *)&buf));
967 EXPORT_SYMBOL_GPL(kvmppc_h_logical_ci_load);
969 int kvmppc_h_logical_ci_store(struct kvm_vcpu *vcpu)
971 unsigned long size = kvmppc_get_gpr(vcpu, 4);
972 unsigned long addr = kvmppc_get_gpr(vcpu, 5);
973 unsigned long val = kvmppc_get_gpr(vcpu, 6);
984 *(__be16 *)&buf = cpu_to_be16(val);
988 *(__be32 *)&buf = cpu_to_be32(val);
992 *(__be64 *)&buf = cpu_to_be64(val);
999 srcu_idx = srcu_read_lock(&vcpu->kvm->srcu);
1000 ret = kvm_io_bus_write(vcpu, KVM_MMIO_BUS, addr, size, &buf);
1001 srcu_read_unlock(&vcpu->kvm->srcu, srcu_idx);
1007 EXPORT_SYMBOL_GPL(kvmppc_h_logical_ci_store);
1009 int kvmppc_core_check_processor_compat(void)
1012 * We always return 0 for book3s. We check
1013 * for compatibility while loading the HV
1019 int kvmppc_book3s_hcall_implemented(struct kvm *kvm, unsigned long hcall)
1021 return kvm->arch.kvm_ops->hcall_implemented(hcall);
1024 #ifdef CONFIG_KVM_XICS
1025 int kvm_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, int level,
1029 return kvmppc_xive_set_irq(kvm, irq_source_id, irq, level,
1032 return kvmppc_xics_set_irq(kvm, irq_source_id, irq, level,
1036 int kvm_arch_set_irq_inatomic(struct kvm_kernel_irq_routing_entry *irq_entry,
1037 struct kvm *kvm, int irq_source_id,
1038 int level, bool line_status)
1040 return kvm_set_irq(kvm, irq_source_id, irq_entry->gsi,
1041 level, line_status);
1043 static int kvmppc_book3s_set_irq(struct kvm_kernel_irq_routing_entry *e,
1044 struct kvm *kvm, int irq_source_id, int level,
1047 return kvm_set_irq(kvm, irq_source_id, e->gsi, level, line_status);
1050 int kvm_irq_map_gsi(struct kvm *kvm,
1051 struct kvm_kernel_irq_routing_entry *entries, int gsi)
1054 entries->type = KVM_IRQ_ROUTING_IRQCHIP;
1055 entries->set = kvmppc_book3s_set_irq;
1056 entries->irqchip.irqchip = 0;
1057 entries->irqchip.pin = gsi;
1061 int kvm_irq_map_chip_pin(struct kvm *kvm, unsigned irqchip, unsigned pin)
1066 #endif /* CONFIG_KVM_XICS */
1068 static int kvmppc_book3s_init(void)
1072 r = kvm_init(NULL, sizeof(struct kvm_vcpu), 0, THIS_MODULE);
1075 #ifdef CONFIG_KVM_BOOK3S_32_HANDLER
1076 r = kvmppc_book3s_init_pr();
1079 #ifdef CONFIG_KVM_XICS
1080 #ifdef CONFIG_KVM_XIVE
1081 if (xics_on_xive()) {
1082 kvm_register_device_ops(&kvm_xive_ops, KVM_DEV_TYPE_XICS);
1083 if (kvmppc_xive_native_supported())
1084 kvm_register_device_ops(&kvm_xive_native_ops,
1088 kvm_register_device_ops(&kvm_xics_ops, KVM_DEV_TYPE_XICS);
1093 static void kvmppc_book3s_exit(void)
1095 #ifdef CONFIG_KVM_BOOK3S_32_HANDLER
1096 kvmppc_book3s_exit_pr();
1101 module_init(kvmppc_book3s_init);
1102 module_exit(kvmppc_book3s_exit);
1104 /* On 32bit this is our one and only kernel module */
1105 #ifdef CONFIG_KVM_BOOK3S_32_HANDLER
1106 MODULE_ALIAS_MISCDEV(KVM_MINOR);
1107 MODULE_ALIAS("devname:kvm");