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)
47 const struct kvm_stats_header kvm_vm_stats_header = {
48 .name_size = KVM_STATS_NAME_SIZE,
49 .num_desc = ARRAY_SIZE(kvm_vm_stats_desc),
50 .id_offset = sizeof(struct kvm_stats_header),
51 .desc_offset = sizeof(struct kvm_stats_header) + KVM_STATS_NAME_SIZE,
52 .data_offset = sizeof(struct kvm_stats_header) + KVM_STATS_NAME_SIZE +
53 sizeof(kvm_vm_stats_desc),
56 const struct _kvm_stats_desc kvm_vcpu_stats_desc[] = {
57 KVM_GENERIC_VCPU_STATS(),
58 STATS_DESC_COUNTER(VCPU, sum_exits),
59 STATS_DESC_COUNTER(VCPU, mmio_exits),
60 STATS_DESC_COUNTER(VCPU, signal_exits),
61 STATS_DESC_COUNTER(VCPU, light_exits),
62 STATS_DESC_COUNTER(VCPU, itlb_real_miss_exits),
63 STATS_DESC_COUNTER(VCPU, itlb_virt_miss_exits),
64 STATS_DESC_COUNTER(VCPU, dtlb_real_miss_exits),
65 STATS_DESC_COUNTER(VCPU, dtlb_virt_miss_exits),
66 STATS_DESC_COUNTER(VCPU, syscall_exits),
67 STATS_DESC_COUNTER(VCPU, isi_exits),
68 STATS_DESC_COUNTER(VCPU, dsi_exits),
69 STATS_DESC_COUNTER(VCPU, emulated_inst_exits),
70 STATS_DESC_COUNTER(VCPU, dec_exits),
71 STATS_DESC_COUNTER(VCPU, ext_intr_exits),
72 STATS_DESC_TIME_NSEC(VCPU, halt_wait_ns),
73 STATS_DESC_COUNTER(VCPU, halt_successful_wait),
74 STATS_DESC_COUNTER(VCPU, dbell_exits),
75 STATS_DESC_COUNTER(VCPU, gdbell_exits),
76 STATS_DESC_COUNTER(VCPU, ld),
77 STATS_DESC_COUNTER(VCPU, st),
78 STATS_DESC_COUNTER(VCPU, pf_storage),
79 STATS_DESC_COUNTER(VCPU, pf_instruc),
80 STATS_DESC_COUNTER(VCPU, sp_storage),
81 STATS_DESC_COUNTER(VCPU, sp_instruc),
82 STATS_DESC_COUNTER(VCPU, queue_intr),
83 STATS_DESC_COUNTER(VCPU, ld_slow),
84 STATS_DESC_COUNTER(VCPU, st_slow),
85 STATS_DESC_COUNTER(VCPU, pthru_all),
86 STATS_DESC_COUNTER(VCPU, pthru_host),
87 STATS_DESC_COUNTER(VCPU, pthru_bad_aff)
90 const struct kvm_stats_header kvm_vcpu_stats_header = {
91 .name_size = KVM_STATS_NAME_SIZE,
92 .num_desc = ARRAY_SIZE(kvm_vcpu_stats_desc),
93 .id_offset = sizeof(struct kvm_stats_header),
94 .desc_offset = sizeof(struct kvm_stats_header) + KVM_STATS_NAME_SIZE,
95 .data_offset = sizeof(struct kvm_stats_header) + KVM_STATS_NAME_SIZE +
96 sizeof(kvm_vcpu_stats_desc),
99 static inline void kvmppc_update_int_pending(struct kvm_vcpu *vcpu,
100 unsigned long pending_now, unsigned long old_pending)
102 if (is_kvmppc_hv_enabled(vcpu->kvm))
105 kvmppc_set_int_pending(vcpu, 1);
106 else if (old_pending)
107 kvmppc_set_int_pending(vcpu, 0);
110 static inline bool kvmppc_critical_section(struct kvm_vcpu *vcpu)
116 if (is_kvmppc_hv_enabled(vcpu->kvm))
119 crit_raw = kvmppc_get_critical(vcpu);
120 crit_r1 = kvmppc_get_gpr(vcpu, 1);
122 /* Truncate crit indicators in 32 bit mode */
123 if (!(kvmppc_get_msr(vcpu) & MSR_SF)) {
124 crit_raw &= 0xffffffff;
125 crit_r1 &= 0xffffffff;
128 /* Critical section when crit == r1 */
129 crit = (crit_raw == crit_r1);
130 /* ... and we're in supervisor mode */
131 crit = crit && !(kvmppc_get_msr(vcpu) & MSR_PR);
136 void kvmppc_inject_interrupt(struct kvm_vcpu *vcpu, int vec, u64 flags)
138 vcpu->kvm->arch.kvm_ops->inject_interrupt(vcpu, vec, flags);
141 static int kvmppc_book3s_vec2irqprio(unsigned int vec)
146 case 0x100: prio = BOOK3S_IRQPRIO_SYSTEM_RESET; break;
147 case 0x200: prio = BOOK3S_IRQPRIO_MACHINE_CHECK; break;
148 case 0x300: prio = BOOK3S_IRQPRIO_DATA_STORAGE; break;
149 case 0x380: prio = BOOK3S_IRQPRIO_DATA_SEGMENT; break;
150 case 0x400: prio = BOOK3S_IRQPRIO_INST_STORAGE; break;
151 case 0x480: prio = BOOK3S_IRQPRIO_INST_SEGMENT; break;
152 case 0x500: prio = BOOK3S_IRQPRIO_EXTERNAL; break;
153 case 0x600: prio = BOOK3S_IRQPRIO_ALIGNMENT; break;
154 case 0x700: prio = BOOK3S_IRQPRIO_PROGRAM; break;
155 case 0x800: prio = BOOK3S_IRQPRIO_FP_UNAVAIL; break;
156 case 0x900: prio = BOOK3S_IRQPRIO_DECREMENTER; break;
157 case 0xc00: prio = BOOK3S_IRQPRIO_SYSCALL; break;
158 case 0xd00: prio = BOOK3S_IRQPRIO_DEBUG; break;
159 case 0xf20: prio = BOOK3S_IRQPRIO_ALTIVEC; break;
160 case 0xf40: prio = BOOK3S_IRQPRIO_VSX; break;
161 case 0xf60: prio = BOOK3S_IRQPRIO_FAC_UNAVAIL; break;
162 default: prio = BOOK3S_IRQPRIO_MAX; break;
168 void kvmppc_book3s_dequeue_irqprio(struct kvm_vcpu *vcpu,
171 unsigned long old_pending = vcpu->arch.pending_exceptions;
173 clear_bit(kvmppc_book3s_vec2irqprio(vec),
174 &vcpu->arch.pending_exceptions);
176 kvmppc_update_int_pending(vcpu, vcpu->arch.pending_exceptions,
180 void kvmppc_book3s_queue_irqprio(struct kvm_vcpu *vcpu, unsigned int vec)
182 vcpu->stat.queue_intr++;
184 set_bit(kvmppc_book3s_vec2irqprio(vec),
185 &vcpu->arch.pending_exceptions);
187 printk(KERN_INFO "Queueing interrupt %x\n", vec);
190 EXPORT_SYMBOL_GPL(kvmppc_book3s_queue_irqprio);
192 void kvmppc_core_queue_machine_check(struct kvm_vcpu *vcpu, ulong flags)
194 /* might as well deliver this straight away */
195 kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_MACHINE_CHECK, flags);
197 EXPORT_SYMBOL_GPL(kvmppc_core_queue_machine_check);
199 void kvmppc_core_queue_syscall(struct kvm_vcpu *vcpu)
201 kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_SYSCALL, 0);
203 EXPORT_SYMBOL(kvmppc_core_queue_syscall);
205 void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong flags)
207 /* might as well deliver this straight away */
208 kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_PROGRAM, flags);
210 EXPORT_SYMBOL_GPL(kvmppc_core_queue_program);
212 void kvmppc_core_queue_fpunavail(struct kvm_vcpu *vcpu)
214 /* might as well deliver this straight away */
215 kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_FP_UNAVAIL, 0);
218 void kvmppc_core_queue_vec_unavail(struct kvm_vcpu *vcpu)
220 /* might as well deliver this straight away */
221 kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_ALTIVEC, 0);
224 void kvmppc_core_queue_vsx_unavail(struct kvm_vcpu *vcpu)
226 /* might as well deliver this straight away */
227 kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_VSX, 0);
230 void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu)
232 kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_DECREMENTER);
234 EXPORT_SYMBOL_GPL(kvmppc_core_queue_dec);
236 int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu)
238 return test_bit(BOOK3S_IRQPRIO_DECREMENTER, &vcpu->arch.pending_exceptions);
240 EXPORT_SYMBOL_GPL(kvmppc_core_pending_dec);
242 void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu)
244 kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_DECREMENTER);
246 EXPORT_SYMBOL_GPL(kvmppc_core_dequeue_dec);
248 void kvmppc_core_queue_external(struct kvm_vcpu *vcpu,
249 struct kvm_interrupt *irq)
252 * This case (KVM_INTERRUPT_SET) should never actually arise for
253 * a pseries guest (because pseries guests expect their interrupt
254 * controllers to continue asserting an external interrupt request
255 * until it is acknowledged at the interrupt controller), but is
256 * included to avoid ABI breakage and potentially for other
259 * There is a subtlety here: HV KVM does not test the
260 * external_oneshot flag in the code that synthesizes
261 * external interrupts for the guest just before entering
262 * the guest. That is OK even if userspace did do a
263 * KVM_INTERRUPT_SET on a pseries guest vcpu, because the
264 * caller (kvm_vcpu_ioctl_interrupt) does a kvm_vcpu_kick()
265 * which ends up doing a smp_send_reschedule(), which will
266 * pull the guest all the way out to the host, meaning that
267 * we will call kvmppc_core_prepare_to_enter() before entering
268 * the guest again, and that will handle the external_oneshot
271 if (irq->irq == KVM_INTERRUPT_SET)
272 vcpu->arch.external_oneshot = 1;
274 kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_EXTERNAL);
277 void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu)
279 kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_EXTERNAL);
282 void kvmppc_core_queue_data_storage(struct kvm_vcpu *vcpu, ulong dar,
285 kvmppc_set_dar(vcpu, dar);
286 kvmppc_set_dsisr(vcpu, flags);
287 kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_DATA_STORAGE, 0);
289 EXPORT_SYMBOL_GPL(kvmppc_core_queue_data_storage);
291 void kvmppc_core_queue_inst_storage(struct kvm_vcpu *vcpu, ulong flags)
293 kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_INST_STORAGE, flags);
295 EXPORT_SYMBOL_GPL(kvmppc_core_queue_inst_storage);
297 static int kvmppc_book3s_irqprio_deliver(struct kvm_vcpu *vcpu,
298 unsigned int priority)
302 bool crit = kvmppc_critical_section(vcpu);
305 case BOOK3S_IRQPRIO_DECREMENTER:
306 deliver = (kvmppc_get_msr(vcpu) & MSR_EE) && !crit;
307 vec = BOOK3S_INTERRUPT_DECREMENTER;
309 case BOOK3S_IRQPRIO_EXTERNAL:
310 deliver = (kvmppc_get_msr(vcpu) & MSR_EE) && !crit;
311 vec = BOOK3S_INTERRUPT_EXTERNAL;
313 case BOOK3S_IRQPRIO_SYSTEM_RESET:
314 vec = BOOK3S_INTERRUPT_SYSTEM_RESET;
316 case BOOK3S_IRQPRIO_MACHINE_CHECK:
317 vec = BOOK3S_INTERRUPT_MACHINE_CHECK;
319 case BOOK3S_IRQPRIO_DATA_STORAGE:
320 vec = BOOK3S_INTERRUPT_DATA_STORAGE;
322 case BOOK3S_IRQPRIO_INST_STORAGE:
323 vec = BOOK3S_INTERRUPT_INST_STORAGE;
325 case BOOK3S_IRQPRIO_DATA_SEGMENT:
326 vec = BOOK3S_INTERRUPT_DATA_SEGMENT;
328 case BOOK3S_IRQPRIO_INST_SEGMENT:
329 vec = BOOK3S_INTERRUPT_INST_SEGMENT;
331 case BOOK3S_IRQPRIO_ALIGNMENT:
332 vec = BOOK3S_INTERRUPT_ALIGNMENT;
334 case BOOK3S_IRQPRIO_PROGRAM:
335 vec = BOOK3S_INTERRUPT_PROGRAM;
337 case BOOK3S_IRQPRIO_VSX:
338 vec = BOOK3S_INTERRUPT_VSX;
340 case BOOK3S_IRQPRIO_ALTIVEC:
341 vec = BOOK3S_INTERRUPT_ALTIVEC;
343 case BOOK3S_IRQPRIO_FP_UNAVAIL:
344 vec = BOOK3S_INTERRUPT_FP_UNAVAIL;
346 case BOOK3S_IRQPRIO_SYSCALL:
347 vec = BOOK3S_INTERRUPT_SYSCALL;
349 case BOOK3S_IRQPRIO_DEBUG:
350 vec = BOOK3S_INTERRUPT_TRACE;
352 case BOOK3S_IRQPRIO_PERFORMANCE_MONITOR:
353 vec = BOOK3S_INTERRUPT_PERFMON;
355 case BOOK3S_IRQPRIO_FAC_UNAVAIL:
356 vec = BOOK3S_INTERRUPT_FAC_UNAVAIL;
360 printk(KERN_ERR "KVM: Unknown interrupt: 0x%x\n", priority);
365 printk(KERN_INFO "Deliver interrupt 0x%x? %x\n", vec, deliver);
369 kvmppc_inject_interrupt(vcpu, vec, 0);
375 * This function determines if an irqprio should be cleared once issued.
377 static bool clear_irqprio(struct kvm_vcpu *vcpu, unsigned int priority)
380 case BOOK3S_IRQPRIO_DECREMENTER:
381 /* DEC interrupts get cleared by mtdec */
383 case BOOK3S_IRQPRIO_EXTERNAL:
385 * External interrupts get cleared by userspace
386 * except when set by the KVM_INTERRUPT ioctl with
387 * KVM_INTERRUPT_SET (not KVM_INTERRUPT_SET_LEVEL).
389 if (vcpu->arch.external_oneshot) {
390 vcpu->arch.external_oneshot = 0;
399 int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu)
401 unsigned long *pending = &vcpu->arch.pending_exceptions;
402 unsigned long old_pending = vcpu->arch.pending_exceptions;
403 unsigned int priority;
406 if (vcpu->arch.pending_exceptions)
407 printk(KERN_EMERG "KVM: Check pending: %lx\n", vcpu->arch.pending_exceptions);
409 priority = __ffs(*pending);
410 while (priority < BOOK3S_IRQPRIO_MAX) {
411 if (kvmppc_book3s_irqprio_deliver(vcpu, priority) &&
412 clear_irqprio(vcpu, priority)) {
413 clear_bit(priority, &vcpu->arch.pending_exceptions);
417 priority = find_next_bit(pending,
418 BITS_PER_BYTE * sizeof(*pending),
422 /* Tell the guest about our interrupt status */
423 kvmppc_update_int_pending(vcpu, *pending, old_pending);
427 EXPORT_SYMBOL_GPL(kvmppc_core_prepare_to_enter);
429 kvm_pfn_t kvmppc_gpa_to_pfn(struct kvm_vcpu *vcpu, gpa_t gpa, bool writing,
432 ulong mp_pa = vcpu->arch.magic_page_pa & KVM_PAM;
433 gfn_t gfn = gpa >> PAGE_SHIFT;
435 if (!(kvmppc_get_msr(vcpu) & MSR_SF))
436 mp_pa = (uint32_t)mp_pa;
438 /* Magic page override */
440 if (unlikely(mp_pa) && unlikely((gpa & KVM_PAM) == mp_pa)) {
441 ulong shared_page = ((ulong)vcpu->arch.shared) & PAGE_MASK;
444 pfn = (kvm_pfn_t)virt_to_phys((void*)shared_page) >> PAGE_SHIFT;
445 get_page(pfn_to_page(pfn));
451 return gfn_to_pfn_prot(vcpu->kvm, gfn, writing, writable);
453 EXPORT_SYMBOL_GPL(kvmppc_gpa_to_pfn);
455 int kvmppc_xlate(struct kvm_vcpu *vcpu, ulong eaddr, enum xlate_instdata xlid,
456 enum xlate_readwrite xlrw, struct kvmppc_pte *pte)
458 bool data = (xlid == XLATE_DATA);
459 bool iswrite = (xlrw == XLATE_WRITE);
460 int relocated = (kvmppc_get_msr(vcpu) & (data ? MSR_DR : MSR_IR));
464 r = vcpu->arch.mmu.xlate(vcpu, eaddr, pte, data, iswrite);
467 pte->raddr = eaddr & KVM_PAM;
468 pte->vpage = VSID_REAL | eaddr >> 12;
469 pte->may_read = true;
470 pte->may_write = true;
471 pte->may_execute = true;
474 if ((kvmppc_get_msr(vcpu) & (MSR_IR | MSR_DR)) == MSR_DR &&
476 if ((vcpu->arch.hflags & BOOK3S_HFLAG_SPLIT_HACK) &&
477 ((eaddr & SPLIT_HACK_MASK) == SPLIT_HACK_OFFS))
478 pte->raddr &= ~SPLIT_HACK_MASK;
485 int kvmppc_load_last_inst(struct kvm_vcpu *vcpu,
486 enum instruction_fetch_type type, u32 *inst)
488 ulong pc = kvmppc_get_pc(vcpu);
494 r = kvmppc_ld(vcpu, &pc, sizeof(u32), inst, false);
495 if (r == EMULATE_DONE)
498 return EMULATE_AGAIN;
500 EXPORT_SYMBOL_GPL(kvmppc_load_last_inst);
502 int kvmppc_subarch_vcpu_init(struct kvm_vcpu *vcpu)
507 void kvmppc_subarch_vcpu_uninit(struct kvm_vcpu *vcpu)
511 int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
512 struct kvm_sregs *sregs)
517 ret = vcpu->kvm->arch.kvm_ops->get_sregs(vcpu, sregs);
523 int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
524 struct kvm_sregs *sregs)
529 ret = vcpu->kvm->arch.kvm_ops->set_sregs(vcpu, sregs);
535 int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
539 regs->pc = kvmppc_get_pc(vcpu);
540 regs->cr = kvmppc_get_cr(vcpu);
541 regs->ctr = kvmppc_get_ctr(vcpu);
542 regs->lr = kvmppc_get_lr(vcpu);
543 regs->xer = kvmppc_get_xer(vcpu);
544 regs->msr = kvmppc_get_msr(vcpu);
545 regs->srr0 = kvmppc_get_srr0(vcpu);
546 regs->srr1 = kvmppc_get_srr1(vcpu);
547 regs->pid = vcpu->arch.pid;
548 regs->sprg0 = kvmppc_get_sprg0(vcpu);
549 regs->sprg1 = kvmppc_get_sprg1(vcpu);
550 regs->sprg2 = kvmppc_get_sprg2(vcpu);
551 regs->sprg3 = kvmppc_get_sprg3(vcpu);
552 regs->sprg4 = kvmppc_get_sprg4(vcpu);
553 regs->sprg5 = kvmppc_get_sprg5(vcpu);
554 regs->sprg6 = kvmppc_get_sprg6(vcpu);
555 regs->sprg7 = kvmppc_get_sprg7(vcpu);
557 for (i = 0; i < ARRAY_SIZE(regs->gpr); i++)
558 regs->gpr[i] = kvmppc_get_gpr(vcpu, i);
563 int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
567 kvmppc_set_pc(vcpu, regs->pc);
568 kvmppc_set_cr(vcpu, regs->cr);
569 kvmppc_set_ctr(vcpu, regs->ctr);
570 kvmppc_set_lr(vcpu, regs->lr);
571 kvmppc_set_xer(vcpu, regs->xer);
572 kvmppc_set_msr(vcpu, regs->msr);
573 kvmppc_set_srr0(vcpu, regs->srr0);
574 kvmppc_set_srr1(vcpu, regs->srr1);
575 kvmppc_set_sprg0(vcpu, regs->sprg0);
576 kvmppc_set_sprg1(vcpu, regs->sprg1);
577 kvmppc_set_sprg2(vcpu, regs->sprg2);
578 kvmppc_set_sprg3(vcpu, regs->sprg3);
579 kvmppc_set_sprg4(vcpu, regs->sprg4);
580 kvmppc_set_sprg5(vcpu, regs->sprg5);
581 kvmppc_set_sprg6(vcpu, regs->sprg6);
582 kvmppc_set_sprg7(vcpu, regs->sprg7);
584 for (i = 0; i < ARRAY_SIZE(regs->gpr); i++)
585 kvmppc_set_gpr(vcpu, i, regs->gpr[i]);
590 int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
595 int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
600 int kvmppc_get_one_reg(struct kvm_vcpu *vcpu, u64 id,
601 union kvmppc_one_reg *val)
606 r = vcpu->kvm->arch.kvm_ops->get_one_reg(vcpu, id, val);
610 case KVM_REG_PPC_DAR:
611 *val = get_reg_val(id, kvmppc_get_dar(vcpu));
613 case KVM_REG_PPC_DSISR:
614 *val = get_reg_val(id, kvmppc_get_dsisr(vcpu));
616 case KVM_REG_PPC_FPR0 ... KVM_REG_PPC_FPR31:
617 i = id - KVM_REG_PPC_FPR0;
618 *val = get_reg_val(id, VCPU_FPR(vcpu, i));
620 case KVM_REG_PPC_FPSCR:
621 *val = get_reg_val(id, vcpu->arch.fp.fpscr);
624 case KVM_REG_PPC_VSR0 ... KVM_REG_PPC_VSR31:
625 if (cpu_has_feature(CPU_FTR_VSX)) {
626 i = id - KVM_REG_PPC_VSR0;
627 val->vsxval[0] = vcpu->arch.fp.fpr[i][0];
628 val->vsxval[1] = vcpu->arch.fp.fpr[i][1];
633 #endif /* CONFIG_VSX */
634 case KVM_REG_PPC_DEBUG_INST:
635 *val = get_reg_val(id, INS_TW);
637 #ifdef CONFIG_KVM_XICS
638 case KVM_REG_PPC_ICP_STATE:
639 if (!vcpu->arch.icp && !vcpu->arch.xive_vcpu) {
644 *val = get_reg_val(id, kvmppc_xive_get_icp(vcpu));
646 *val = get_reg_val(id, kvmppc_xics_get_icp(vcpu));
648 #endif /* CONFIG_KVM_XICS */
649 #ifdef CONFIG_KVM_XIVE
650 case KVM_REG_PPC_VP_STATE:
651 if (!vcpu->arch.xive_vcpu) {
656 r = kvmppc_xive_native_get_vp(vcpu, val);
660 #endif /* CONFIG_KVM_XIVE */
661 case KVM_REG_PPC_FSCR:
662 *val = get_reg_val(id, vcpu->arch.fscr);
664 case KVM_REG_PPC_TAR:
665 *val = get_reg_val(id, vcpu->arch.tar);
667 case KVM_REG_PPC_EBBHR:
668 *val = get_reg_val(id, vcpu->arch.ebbhr);
670 case KVM_REG_PPC_EBBRR:
671 *val = get_reg_val(id, vcpu->arch.ebbrr);
673 case KVM_REG_PPC_BESCR:
674 *val = get_reg_val(id, vcpu->arch.bescr);
677 *val = get_reg_val(id, vcpu->arch.ic);
688 int kvmppc_set_one_reg(struct kvm_vcpu *vcpu, u64 id,
689 union kvmppc_one_reg *val)
694 r = vcpu->kvm->arch.kvm_ops->set_one_reg(vcpu, id, val);
698 case KVM_REG_PPC_DAR:
699 kvmppc_set_dar(vcpu, set_reg_val(id, *val));
701 case KVM_REG_PPC_DSISR:
702 kvmppc_set_dsisr(vcpu, set_reg_val(id, *val));
704 case KVM_REG_PPC_FPR0 ... KVM_REG_PPC_FPR31:
705 i = id - KVM_REG_PPC_FPR0;
706 VCPU_FPR(vcpu, i) = set_reg_val(id, *val);
708 case KVM_REG_PPC_FPSCR:
709 vcpu->arch.fp.fpscr = set_reg_val(id, *val);
712 case KVM_REG_PPC_VSR0 ... KVM_REG_PPC_VSR31:
713 if (cpu_has_feature(CPU_FTR_VSX)) {
714 i = id - KVM_REG_PPC_VSR0;
715 vcpu->arch.fp.fpr[i][0] = val->vsxval[0];
716 vcpu->arch.fp.fpr[i][1] = val->vsxval[1];
721 #endif /* CONFIG_VSX */
722 #ifdef CONFIG_KVM_XICS
723 case KVM_REG_PPC_ICP_STATE:
724 if (!vcpu->arch.icp && !vcpu->arch.xive_vcpu) {
729 r = kvmppc_xive_set_icp(vcpu, set_reg_val(id, *val));
731 r = kvmppc_xics_set_icp(vcpu, set_reg_val(id, *val));
733 #endif /* CONFIG_KVM_XICS */
734 #ifdef CONFIG_KVM_XIVE
735 case KVM_REG_PPC_VP_STATE:
736 if (!vcpu->arch.xive_vcpu) {
741 r = kvmppc_xive_native_set_vp(vcpu, val);
745 #endif /* CONFIG_KVM_XIVE */
746 case KVM_REG_PPC_FSCR:
747 vcpu->arch.fscr = set_reg_val(id, *val);
749 case KVM_REG_PPC_TAR:
750 vcpu->arch.tar = set_reg_val(id, *val);
752 case KVM_REG_PPC_EBBHR:
753 vcpu->arch.ebbhr = set_reg_val(id, *val);
755 case KVM_REG_PPC_EBBRR:
756 vcpu->arch.ebbrr = set_reg_val(id, *val);
758 case KVM_REG_PPC_BESCR:
759 vcpu->arch.bescr = set_reg_val(id, *val);
762 vcpu->arch.ic = set_reg_val(id, *val);
773 void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
775 vcpu->kvm->arch.kvm_ops->vcpu_load(vcpu, cpu);
778 void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu)
780 vcpu->kvm->arch.kvm_ops->vcpu_put(vcpu);
783 void kvmppc_set_msr(struct kvm_vcpu *vcpu, u64 msr)
785 vcpu->kvm->arch.kvm_ops->set_msr(vcpu, msr);
787 EXPORT_SYMBOL_GPL(kvmppc_set_msr);
789 int kvmppc_vcpu_run(struct kvm_vcpu *vcpu)
791 return vcpu->kvm->arch.kvm_ops->vcpu_run(vcpu);
794 int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
795 struct kvm_translation *tr)
800 int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
801 struct kvm_guest_debug *dbg)
804 vcpu->guest_debug = dbg->control;
809 void kvmppc_decrementer_func(struct kvm_vcpu *vcpu)
811 kvmppc_core_queue_dec(vcpu);
815 int kvmppc_core_vcpu_create(struct kvm_vcpu *vcpu)
817 return vcpu->kvm->arch.kvm_ops->vcpu_create(vcpu);
820 void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu)
822 vcpu->kvm->arch.kvm_ops->vcpu_free(vcpu);
825 int kvmppc_core_check_requests(struct kvm_vcpu *vcpu)
827 return vcpu->kvm->arch.kvm_ops->check_requests(vcpu);
830 void kvm_arch_sync_dirty_log(struct kvm *kvm, struct kvm_memory_slot *memslot)
835 int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, struct kvm_dirty_log *log)
837 return kvm->arch.kvm_ops->get_dirty_log(kvm, log);
840 void kvmppc_core_free_memslot(struct kvm *kvm, struct kvm_memory_slot *slot)
842 kvm->arch.kvm_ops->free_memslot(slot);
845 void kvmppc_core_flush_memslot(struct kvm *kvm, struct kvm_memory_slot *memslot)
847 kvm->arch.kvm_ops->flush_memslot(kvm, memslot);
850 int kvmppc_core_prepare_memory_region(struct kvm *kvm,
851 struct kvm_memory_slot *memslot,
852 const struct kvm_userspace_memory_region *mem,
853 enum kvm_mr_change change)
855 return kvm->arch.kvm_ops->prepare_memory_region(kvm, memslot, mem,
859 void kvmppc_core_commit_memory_region(struct kvm *kvm,
860 const struct kvm_userspace_memory_region *mem,
861 const struct kvm_memory_slot *old,
862 const struct kvm_memory_slot *new,
863 enum kvm_mr_change change)
865 kvm->arch.kvm_ops->commit_memory_region(kvm, mem, old, new, change);
868 bool kvm_unmap_gfn_range(struct kvm *kvm, struct kvm_gfn_range *range)
870 return kvm->arch.kvm_ops->unmap_gfn_range(kvm, range);
873 bool kvm_age_gfn(struct kvm *kvm, struct kvm_gfn_range *range)
875 return kvm->arch.kvm_ops->age_gfn(kvm, range);
878 bool kvm_test_age_gfn(struct kvm *kvm, struct kvm_gfn_range *range)
880 return kvm->arch.kvm_ops->test_age_gfn(kvm, range);
883 bool kvm_set_spte_gfn(struct kvm *kvm, struct kvm_gfn_range *range)
885 return kvm->arch.kvm_ops->set_spte_gfn(kvm, range);
888 int kvmppc_core_init_vm(struct kvm *kvm)
892 INIT_LIST_HEAD_RCU(&kvm->arch.spapr_tce_tables);
893 INIT_LIST_HEAD(&kvm->arch.rtas_tokens);
894 mutex_init(&kvm->arch.rtas_token_lock);
897 return kvm->arch.kvm_ops->init_vm(kvm);
900 void kvmppc_core_destroy_vm(struct kvm *kvm)
902 kvm->arch.kvm_ops->destroy_vm(kvm);
905 kvmppc_rtas_tokens_free(kvm);
906 WARN_ON(!list_empty(&kvm->arch.spapr_tce_tables));
909 #ifdef CONFIG_KVM_XICS
911 * Free the XIVE and XICS devices which are not directly freed by the
912 * device 'release' method
914 kfree(kvm->arch.xive_devices.native);
915 kvm->arch.xive_devices.native = NULL;
916 kfree(kvm->arch.xive_devices.xics_on_xive);
917 kvm->arch.xive_devices.xics_on_xive = NULL;
918 kfree(kvm->arch.xics_device);
919 kvm->arch.xics_device = NULL;
920 #endif /* CONFIG_KVM_XICS */
923 int kvmppc_h_logical_ci_load(struct kvm_vcpu *vcpu)
925 unsigned long size = kvmppc_get_gpr(vcpu, 4);
926 unsigned long addr = kvmppc_get_gpr(vcpu, 5);
931 if (!is_power_of_2(size) || (size > sizeof(buf)))
934 srcu_idx = srcu_read_lock(&vcpu->kvm->srcu);
935 ret = kvm_io_bus_read(vcpu, KVM_MMIO_BUS, addr, size, &buf);
936 srcu_read_unlock(&vcpu->kvm->srcu, srcu_idx);
942 kvmppc_set_gpr(vcpu, 4, *(u8 *)&buf);
946 kvmppc_set_gpr(vcpu, 4, be16_to_cpu(*(__be16 *)&buf));
950 kvmppc_set_gpr(vcpu, 4, be32_to_cpu(*(__be32 *)&buf));
954 kvmppc_set_gpr(vcpu, 4, be64_to_cpu(*(__be64 *)&buf));
963 EXPORT_SYMBOL_GPL(kvmppc_h_logical_ci_load);
965 int kvmppc_h_logical_ci_store(struct kvm_vcpu *vcpu)
967 unsigned long size = kvmppc_get_gpr(vcpu, 4);
968 unsigned long addr = kvmppc_get_gpr(vcpu, 5);
969 unsigned long val = kvmppc_get_gpr(vcpu, 6);
980 *(__be16 *)&buf = cpu_to_be16(val);
984 *(__be32 *)&buf = cpu_to_be32(val);
988 *(__be64 *)&buf = cpu_to_be64(val);
995 srcu_idx = srcu_read_lock(&vcpu->kvm->srcu);
996 ret = kvm_io_bus_write(vcpu, KVM_MMIO_BUS, addr, size, &buf);
997 srcu_read_unlock(&vcpu->kvm->srcu, srcu_idx);
1003 EXPORT_SYMBOL_GPL(kvmppc_h_logical_ci_store);
1005 int kvmppc_core_check_processor_compat(void)
1008 * We always return 0 for book3s. We check
1009 * for compatibility while loading the HV
1015 int kvmppc_book3s_hcall_implemented(struct kvm *kvm, unsigned long hcall)
1017 return kvm->arch.kvm_ops->hcall_implemented(hcall);
1020 #ifdef CONFIG_KVM_XICS
1021 int kvm_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, int level,
1025 return kvmppc_xive_set_irq(kvm, irq_source_id, irq, level,
1028 return kvmppc_xics_set_irq(kvm, irq_source_id, irq, level,
1032 int kvm_arch_set_irq_inatomic(struct kvm_kernel_irq_routing_entry *irq_entry,
1033 struct kvm *kvm, int irq_source_id,
1034 int level, bool line_status)
1036 return kvm_set_irq(kvm, irq_source_id, irq_entry->gsi,
1037 level, line_status);
1039 static int kvmppc_book3s_set_irq(struct kvm_kernel_irq_routing_entry *e,
1040 struct kvm *kvm, int irq_source_id, int level,
1043 return kvm_set_irq(kvm, irq_source_id, e->gsi, level, line_status);
1046 int kvm_irq_map_gsi(struct kvm *kvm,
1047 struct kvm_kernel_irq_routing_entry *entries, int gsi)
1050 entries->type = KVM_IRQ_ROUTING_IRQCHIP;
1051 entries->set = kvmppc_book3s_set_irq;
1052 entries->irqchip.irqchip = 0;
1053 entries->irqchip.pin = gsi;
1057 int kvm_irq_map_chip_pin(struct kvm *kvm, unsigned irqchip, unsigned pin)
1062 #endif /* CONFIG_KVM_XICS */
1064 static int kvmppc_book3s_init(void)
1068 r = kvm_init(NULL, sizeof(struct kvm_vcpu), 0, THIS_MODULE);
1071 #ifdef CONFIG_KVM_BOOK3S_32_HANDLER
1072 r = kvmppc_book3s_init_pr();
1075 #ifdef CONFIG_KVM_XICS
1076 #ifdef CONFIG_KVM_XIVE
1077 if (xics_on_xive()) {
1078 kvm_register_device_ops(&kvm_xive_ops, KVM_DEV_TYPE_XICS);
1079 if (kvmppc_xive_native_supported())
1080 kvm_register_device_ops(&kvm_xive_native_ops,
1084 kvm_register_device_ops(&kvm_xics_ops, KVM_DEV_TYPE_XICS);
1089 static void kvmppc_book3s_exit(void)
1091 #ifdef CONFIG_KVM_BOOK3S_32_HANDLER
1092 kvmppc_book3s_exit_pr();
1097 module_init(kvmppc_book3s_init);
1098 module_exit(kvmppc_book3s_exit);
1100 /* On 32bit this is our one and only kernel module */
1101 #ifdef CONFIG_KVM_BOOK3S_32_HANDLER
1102 MODULE_ALIAS_MISCDEV(KVM_MINOR);
1103 MODULE_ALIAS("devname:kvm");