2 * Copyright (C) 2009. SUSE Linux Products GmbH. All rights reserved.
5 * Alexander Graf <agraf@suse.de>
6 * Kevin Wolf <mail@kevin-wolf.de>
9 * This file is derived from arch/powerpc/kvm/44x.c,
10 * by Hollis Blanchard <hollisb@us.ibm.com>.
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License, version 2, as
14 * published by the Free Software Foundation.
17 #include <linux/kvm_host.h>
18 #include <linux/err.h>
19 #include <linux/slab.h>
22 #include <asm/cputable.h>
23 #include <asm/cacheflush.h>
24 #include <asm/tlbflush.h>
25 #include <asm/uaccess.h>
27 #include <asm/kvm_ppc.h>
28 #include <asm/kvm_book3s.h>
29 #include <asm/mmu_context.h>
30 #include <linux/gfp.h>
31 #include <linux/sched.h>
32 #include <linux/vmalloc.h>
33 #include <linux/highmem.h>
35 #define VCPU_STAT(x) offsetof(struct kvm_vcpu, stat.x), KVM_STAT_VCPU
37 /* #define EXIT_DEBUG */
38 /* #define EXIT_DEBUG_SIMPLE */
39 /* #define DEBUG_EXT */
41 static int kvmppc_handle_ext(struct kvm_vcpu *vcpu, unsigned int exit_nr,
44 /* Some compatibility defines */
45 #ifdef CONFIG_PPC_BOOK3S_32
46 #define MSR_USER32 MSR_USER
47 #define MSR_USER64 MSR_USER
48 #define HW_PAGE_SIZE PAGE_SIZE
51 struct kvm_stats_debugfs_item debugfs_entries[] = {
52 { "exits", VCPU_STAT(sum_exits) },
53 { "mmio", VCPU_STAT(mmio_exits) },
54 { "sig", VCPU_STAT(signal_exits) },
55 { "sysc", VCPU_STAT(syscall_exits) },
56 { "inst_emu", VCPU_STAT(emulated_inst_exits) },
57 { "dec", VCPU_STAT(dec_exits) },
58 { "ext_intr", VCPU_STAT(ext_intr_exits) },
59 { "queue_intr", VCPU_STAT(queue_intr) },
60 { "halt_wakeup", VCPU_STAT(halt_wakeup) },
61 { "pf_storage", VCPU_STAT(pf_storage) },
62 { "sp_storage", VCPU_STAT(sp_storage) },
63 { "pf_instruc", VCPU_STAT(pf_instruc) },
64 { "sp_instruc", VCPU_STAT(sp_instruc) },
65 { "ld", VCPU_STAT(ld) },
66 { "ld_slow", VCPU_STAT(ld_slow) },
67 { "st", VCPU_STAT(st) },
68 { "st_slow", VCPU_STAT(st_slow) },
72 void kvmppc_core_load_host_debugstate(struct kvm_vcpu *vcpu)
76 void kvmppc_core_load_guest_debugstate(struct kvm_vcpu *vcpu)
80 void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
82 #ifdef CONFIG_PPC_BOOK3S_64
83 memcpy(to_svcpu(vcpu)->slb, to_book3s(vcpu)->slb_shadow, sizeof(to_svcpu(vcpu)->slb));
84 memcpy(&get_paca()->shadow_vcpu, to_book3s(vcpu)->shadow_vcpu,
85 sizeof(get_paca()->shadow_vcpu));
86 to_svcpu(vcpu)->slb_max = to_book3s(vcpu)->slb_shadow_max;
89 #ifdef CONFIG_PPC_BOOK3S_32
90 current->thread.kvm_shadow_vcpu = to_book3s(vcpu)->shadow_vcpu;
94 void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu)
96 #ifdef CONFIG_PPC_BOOK3S_64
97 memcpy(to_book3s(vcpu)->slb_shadow, to_svcpu(vcpu)->slb, sizeof(to_svcpu(vcpu)->slb));
98 memcpy(to_book3s(vcpu)->shadow_vcpu, &get_paca()->shadow_vcpu,
99 sizeof(get_paca()->shadow_vcpu));
100 to_book3s(vcpu)->slb_shadow_max = to_svcpu(vcpu)->slb_max;
103 kvmppc_giveup_ext(vcpu, MSR_FP);
104 kvmppc_giveup_ext(vcpu, MSR_VEC);
105 kvmppc_giveup_ext(vcpu, MSR_VSX);
108 #if defined(EXIT_DEBUG)
109 static u32 kvmppc_get_dec(struct kvm_vcpu *vcpu)
111 u64 jd = mftb() - vcpu->arch.dec_jiffies;
112 return vcpu->arch.dec - jd;
116 static void kvmppc_recalc_shadow_msr(struct kvm_vcpu *vcpu)
118 ulong smsr = vcpu->arch.shared->msr;
120 /* Guest MSR values */
121 smsr &= MSR_FE0 | MSR_FE1 | MSR_SF | MSR_SE | MSR_BE | MSR_DE;
122 /* Process MSR values */
123 smsr |= MSR_ME | MSR_RI | MSR_IR | MSR_DR | MSR_PR | MSR_EE;
124 /* External providers the guest reserved */
125 smsr |= (vcpu->arch.shared->msr & vcpu->arch.guest_owned_ext);
126 /* 64-bit Process MSR values */
127 #ifdef CONFIG_PPC_BOOK3S_64
128 smsr |= MSR_ISF | MSR_HV;
130 vcpu->arch.shadow_msr = smsr;
133 void kvmppc_set_msr(struct kvm_vcpu *vcpu, u64 msr)
135 ulong old_msr = vcpu->arch.shared->msr;
138 printk(KERN_INFO "KVM: Set MSR to 0x%llx\n", msr);
141 msr &= to_book3s(vcpu)->msr_mask;
142 vcpu->arch.shared->msr = msr;
143 kvmppc_recalc_shadow_msr(vcpu);
145 if (msr & (MSR_WE|MSR_POW)) {
146 if (!vcpu->arch.pending_exceptions) {
147 kvm_vcpu_block(vcpu);
148 vcpu->stat.halt_wakeup++;
152 if ((vcpu->arch.shared->msr & (MSR_PR|MSR_IR|MSR_DR)) !=
153 (old_msr & (MSR_PR|MSR_IR|MSR_DR))) {
154 kvmppc_mmu_flush_segments(vcpu);
155 kvmppc_mmu_map_segment(vcpu, kvmppc_get_pc(vcpu));
158 /* Preload FPU if it's enabled */
159 if (vcpu->arch.shared->msr & MSR_FP)
160 kvmppc_handle_ext(vcpu, BOOK3S_INTERRUPT_FP_UNAVAIL, MSR_FP);
163 void kvmppc_inject_interrupt(struct kvm_vcpu *vcpu, int vec, u64 flags)
165 vcpu->arch.shared->srr0 = kvmppc_get_pc(vcpu);
166 vcpu->arch.shared->srr1 = vcpu->arch.shared->msr | flags;
167 kvmppc_set_pc(vcpu, to_book3s(vcpu)->hior + vec);
168 vcpu->arch.mmu.reset_msr(vcpu);
171 static int kvmppc_book3s_vec2irqprio(unsigned int vec)
176 case 0x100: prio = BOOK3S_IRQPRIO_SYSTEM_RESET; break;
177 case 0x200: prio = BOOK3S_IRQPRIO_MACHINE_CHECK; break;
178 case 0x300: prio = BOOK3S_IRQPRIO_DATA_STORAGE; break;
179 case 0x380: prio = BOOK3S_IRQPRIO_DATA_SEGMENT; break;
180 case 0x400: prio = BOOK3S_IRQPRIO_INST_STORAGE; break;
181 case 0x480: prio = BOOK3S_IRQPRIO_INST_SEGMENT; break;
182 case 0x500: prio = BOOK3S_IRQPRIO_EXTERNAL; break;
183 case 0x600: prio = BOOK3S_IRQPRIO_ALIGNMENT; break;
184 case 0x700: prio = BOOK3S_IRQPRIO_PROGRAM; break;
185 case 0x800: prio = BOOK3S_IRQPRIO_FP_UNAVAIL; break;
186 case 0x900: prio = BOOK3S_IRQPRIO_DECREMENTER; break;
187 case 0xc00: prio = BOOK3S_IRQPRIO_SYSCALL; break;
188 case 0xd00: prio = BOOK3S_IRQPRIO_DEBUG; break;
189 case 0xf20: prio = BOOK3S_IRQPRIO_ALTIVEC; break;
190 case 0xf40: prio = BOOK3S_IRQPRIO_VSX; break;
191 default: prio = BOOK3S_IRQPRIO_MAX; break;
197 static void kvmppc_book3s_dequeue_irqprio(struct kvm_vcpu *vcpu,
200 clear_bit(kvmppc_book3s_vec2irqprio(vec),
201 &vcpu->arch.pending_exceptions);
204 void kvmppc_book3s_queue_irqprio(struct kvm_vcpu *vcpu, unsigned int vec)
206 vcpu->stat.queue_intr++;
208 set_bit(kvmppc_book3s_vec2irqprio(vec),
209 &vcpu->arch.pending_exceptions);
211 printk(KERN_INFO "Queueing interrupt %x\n", vec);
216 void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong flags)
218 to_book3s(vcpu)->prog_flags = flags;
219 kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_PROGRAM);
222 void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu)
224 kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_DECREMENTER);
227 int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu)
229 return test_bit(BOOK3S_INTERRUPT_DECREMENTER >> 7, &vcpu->arch.pending_exceptions);
232 void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu)
234 kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_DECREMENTER);
237 void kvmppc_core_queue_external(struct kvm_vcpu *vcpu,
238 struct kvm_interrupt *irq)
240 kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_EXTERNAL);
243 void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu,
244 struct kvm_interrupt *irq)
246 kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_EXTERNAL);
249 int kvmppc_book3s_irqprio_deliver(struct kvm_vcpu *vcpu, unsigned int priority)
256 case BOOK3S_IRQPRIO_DECREMENTER:
257 deliver = vcpu->arch.shared->msr & MSR_EE;
258 vec = BOOK3S_INTERRUPT_DECREMENTER;
260 case BOOK3S_IRQPRIO_EXTERNAL:
261 deliver = vcpu->arch.shared->msr & MSR_EE;
262 vec = BOOK3S_INTERRUPT_EXTERNAL;
264 case BOOK3S_IRQPRIO_SYSTEM_RESET:
265 vec = BOOK3S_INTERRUPT_SYSTEM_RESET;
267 case BOOK3S_IRQPRIO_MACHINE_CHECK:
268 vec = BOOK3S_INTERRUPT_MACHINE_CHECK;
270 case BOOK3S_IRQPRIO_DATA_STORAGE:
271 vec = BOOK3S_INTERRUPT_DATA_STORAGE;
273 case BOOK3S_IRQPRIO_INST_STORAGE:
274 vec = BOOK3S_INTERRUPT_INST_STORAGE;
276 case BOOK3S_IRQPRIO_DATA_SEGMENT:
277 vec = BOOK3S_INTERRUPT_DATA_SEGMENT;
279 case BOOK3S_IRQPRIO_INST_SEGMENT:
280 vec = BOOK3S_INTERRUPT_INST_SEGMENT;
282 case BOOK3S_IRQPRIO_ALIGNMENT:
283 vec = BOOK3S_INTERRUPT_ALIGNMENT;
285 case BOOK3S_IRQPRIO_PROGRAM:
286 vec = BOOK3S_INTERRUPT_PROGRAM;
287 flags = to_book3s(vcpu)->prog_flags;
289 case BOOK3S_IRQPRIO_VSX:
290 vec = BOOK3S_INTERRUPT_VSX;
292 case BOOK3S_IRQPRIO_ALTIVEC:
293 vec = BOOK3S_INTERRUPT_ALTIVEC;
295 case BOOK3S_IRQPRIO_FP_UNAVAIL:
296 vec = BOOK3S_INTERRUPT_FP_UNAVAIL;
298 case BOOK3S_IRQPRIO_SYSCALL:
299 vec = BOOK3S_INTERRUPT_SYSCALL;
301 case BOOK3S_IRQPRIO_DEBUG:
302 vec = BOOK3S_INTERRUPT_TRACE;
304 case BOOK3S_IRQPRIO_PERFORMANCE_MONITOR:
305 vec = BOOK3S_INTERRUPT_PERFMON;
309 printk(KERN_ERR "KVM: Unknown interrupt: 0x%x\n", priority);
314 printk(KERN_INFO "Deliver interrupt 0x%x? %x\n", vec, deliver);
318 kvmppc_inject_interrupt(vcpu, vec, flags);
323 void kvmppc_core_deliver_interrupts(struct kvm_vcpu *vcpu)
325 unsigned long *pending = &vcpu->arch.pending_exceptions;
326 unsigned int priority;
329 if (vcpu->arch.pending_exceptions)
330 printk(KERN_EMERG "KVM: Check pending: %lx\n", vcpu->arch.pending_exceptions);
332 priority = __ffs(*pending);
333 while (priority < BOOK3S_IRQPRIO_MAX) {
334 if (kvmppc_book3s_irqprio_deliver(vcpu, priority) &&
335 (priority != BOOK3S_IRQPRIO_DECREMENTER)) {
336 /* DEC interrupts get cleared by mtdec */
337 clear_bit(priority, &vcpu->arch.pending_exceptions);
341 priority = find_next_bit(pending,
342 BITS_PER_BYTE * sizeof(*pending),
347 void kvmppc_set_pvr(struct kvm_vcpu *vcpu, u32 pvr)
351 vcpu->arch.hflags &= ~BOOK3S_HFLAG_SLB;
352 vcpu->arch.pvr = pvr;
353 #ifdef CONFIG_PPC_BOOK3S_64
354 if ((pvr >= 0x330000) && (pvr < 0x70330000)) {
355 kvmppc_mmu_book3s_64_init(vcpu);
356 to_book3s(vcpu)->hior = 0xfff00000;
357 to_book3s(vcpu)->msr_mask = 0xffffffffffffffffULL;
361 kvmppc_mmu_book3s_32_init(vcpu);
362 to_book3s(vcpu)->hior = 0;
363 to_book3s(vcpu)->msr_mask = 0xffffffffULL;
366 /* If we are in hypervisor level on 970, we can tell the CPU to
367 * treat DCBZ as 32 bytes store */
368 vcpu->arch.hflags &= ~BOOK3S_HFLAG_DCBZ32;
369 if (vcpu->arch.mmu.is_dcbz32(vcpu) && (mfmsr() & MSR_HV) &&
370 !strcmp(cur_cpu_spec->platform, "ppc970"))
371 vcpu->arch.hflags |= BOOK3S_HFLAG_DCBZ32;
373 /* Cell performs badly if MSR_FEx are set. So let's hope nobody
374 really needs them in a VM on Cell and force disable them. */
375 if (!strcmp(cur_cpu_spec->platform, "ppc-cell-be"))
376 to_book3s(vcpu)->msr_mask &= ~(MSR_FE0 | MSR_FE1);
378 #ifdef CONFIG_PPC_BOOK3S_32
379 /* 32 bit Book3S always has 32 byte dcbz */
380 vcpu->arch.hflags |= BOOK3S_HFLAG_DCBZ32;
383 /* On some CPUs we can execute paired single operations natively */
384 asm ( "mfpvr %0" : "=r"(host_pvr));
386 case 0x00080200: /* lonestar 2.0 */
387 case 0x00088202: /* lonestar 2.2 */
388 case 0x70000100: /* gekko 1.0 */
389 case 0x00080100: /* gekko 2.0 */
390 case 0x00083203: /* gekko 2.3a */
391 case 0x00083213: /* gekko 2.3b */
392 case 0x00083204: /* gekko 2.4 */
393 case 0x00083214: /* gekko 2.4e (8SE) - retail HW2 */
394 case 0x00087200: /* broadway */
395 vcpu->arch.hflags |= BOOK3S_HFLAG_NATIVE_PS;
396 /* Enable HID2.PSE - in case we need it later */
397 mtspr(SPRN_HID2_GEKKO, mfspr(SPRN_HID2_GEKKO) | (1 << 29));
401 /* Book3s_32 CPUs always have 32 bytes cache line size, which Linux assumes. To
402 * make Book3s_32 Linux work on Book3s_64, we have to make sure we trap dcbz to
403 * emulate 32 bytes dcbz length.
405 * The Book3s_64 inventors also realized this case and implemented a special bit
406 * in the HID5 register, which is a hypervisor ressource. Thus we can't use it.
408 * My approach here is to patch the dcbz instruction on executing pages.
410 static void kvmppc_patch_dcbz(struct kvm_vcpu *vcpu, struct kvmppc_pte *pte)
417 hpage = gfn_to_page(vcpu->kvm, pte->raddr >> PAGE_SHIFT);
418 if (is_error_page(hpage))
421 hpage_offset = pte->raddr & ~PAGE_MASK;
422 hpage_offset &= ~0xFFFULL;
426 page = kmap_atomic(hpage, KM_USER0);
428 /* patch dcbz into reserved instruction, so we trap */
429 for (i=hpage_offset; i < hpage_offset + (HW_PAGE_SIZE / 4); i++)
430 if ((page[i] & 0xff0007ff) == INS_DCBZ)
431 page[i] &= 0xfffffff7;
433 kunmap_atomic(page, KM_USER0);
437 static int kvmppc_xlate(struct kvm_vcpu *vcpu, ulong eaddr, bool data,
438 struct kvmppc_pte *pte)
440 int relocated = (vcpu->arch.shared->msr & (data ? MSR_DR : MSR_IR));
444 r = vcpu->arch.mmu.xlate(vcpu, eaddr, pte, data);
447 pte->raddr = eaddr & 0xffffffff;
448 pte->vpage = VSID_REAL | eaddr >> 12;
449 pte->may_read = true;
450 pte->may_write = true;
451 pte->may_execute = true;
458 static hva_t kvmppc_bad_hva(void)
463 static hva_t kvmppc_pte_to_hva(struct kvm_vcpu *vcpu, struct kvmppc_pte *pte,
468 if (read && !pte->may_read)
471 if (!read && !pte->may_write)
474 hpage = gfn_to_hva(vcpu->kvm, pte->raddr >> PAGE_SHIFT);
475 if (kvm_is_error_hva(hpage))
478 return hpage | (pte->raddr & ~PAGE_MASK);
480 return kvmppc_bad_hva();
483 int kvmppc_st(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr,
486 struct kvmppc_pte pte;
490 if (kvmppc_xlate(vcpu, *eaddr, data, &pte))
498 if (kvm_write_guest(vcpu->kvm, pte.raddr, ptr, size))
499 return EMULATE_DO_MMIO;
504 int kvmppc_ld(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr,
507 struct kvmppc_pte pte;
512 if (kvmppc_xlate(vcpu, *eaddr, data, &pte))
517 hva = kvmppc_pte_to_hva(vcpu, &pte, true);
518 if (kvm_is_error_hva(hva))
521 if (copy_from_user(ptr, (void __user *)hva, size)) {
522 printk(KERN_INFO "kvmppc_ld at 0x%lx failed\n", hva);
531 return EMULATE_DO_MMIO;
534 static int kvmppc_visible_gfn(struct kvm_vcpu *vcpu, gfn_t gfn)
536 return kvm_is_visible_gfn(vcpu->kvm, gfn);
539 int kvmppc_handle_pagefault(struct kvm_run *run, struct kvm_vcpu *vcpu,
540 ulong eaddr, int vec)
542 bool data = (vec == BOOK3S_INTERRUPT_DATA_STORAGE);
543 int r = RESUME_GUEST;
546 struct kvmppc_pte pte;
547 bool is_mmio = false;
548 bool dr = (vcpu->arch.shared->msr & MSR_DR) ? true : false;
549 bool ir = (vcpu->arch.shared->msr & MSR_IR) ? true : false;
552 relocated = data ? dr : ir;
554 /* Resolve real address if translation turned on */
556 page_found = vcpu->arch.mmu.xlate(vcpu, eaddr, &pte, data);
558 pte.may_execute = true;
560 pte.may_write = true;
561 pte.raddr = eaddr & 0xffffffff;
563 pte.vpage = eaddr >> 12;
566 switch (vcpu->arch.shared->msr & (MSR_DR|MSR_IR)) {
568 pte.vpage |= ((u64)VSID_REAL << (SID_SHIFT - 12));
572 vcpu->arch.mmu.esid_to_vsid(vcpu, eaddr >> SID_SHIFT, &vsid);
574 if ((vcpu->arch.shared->msr & (MSR_DR|MSR_IR)) == MSR_DR)
575 pte.vpage |= ((u64)VSID_REAL_DR << (SID_SHIFT - 12));
577 pte.vpage |= ((u64)VSID_REAL_IR << (SID_SHIFT - 12));
581 page_found = -EINVAL;
585 if (vcpu->arch.mmu.is_dcbz32(vcpu) &&
586 (!(vcpu->arch.hflags & BOOK3S_HFLAG_DCBZ32))) {
588 * If we do the dcbz hack, we have to NX on every execution,
589 * so we can patch the executing code. This renders our guest
592 pte.may_execute = !data;
595 if (page_found == -ENOENT) {
596 /* Page not found in guest PTE entries */
597 vcpu->arch.shared->dar = kvmppc_get_fault_dar(vcpu);
598 vcpu->arch.shared->dsisr = to_svcpu(vcpu)->fault_dsisr;
599 vcpu->arch.shared->msr |=
600 (to_svcpu(vcpu)->shadow_srr1 & 0x00000000f8000000ULL);
601 kvmppc_book3s_queue_irqprio(vcpu, vec);
602 } else if (page_found == -EPERM) {
603 /* Storage protection */
604 vcpu->arch.shared->dar = kvmppc_get_fault_dar(vcpu);
605 vcpu->arch.shared->dsisr =
606 to_svcpu(vcpu)->fault_dsisr & ~DSISR_NOHPTE;
607 vcpu->arch.shared->dsisr |= DSISR_PROTFAULT;
608 vcpu->arch.shared->msr |=
609 (to_svcpu(vcpu)->shadow_srr1 & 0x00000000f8000000ULL);
610 kvmppc_book3s_queue_irqprio(vcpu, vec);
611 } else if (page_found == -EINVAL) {
612 /* Page not found in guest SLB */
613 vcpu->arch.shared->dar = kvmppc_get_fault_dar(vcpu);
614 kvmppc_book3s_queue_irqprio(vcpu, vec + 0x80);
615 } else if (!is_mmio &&
616 kvmppc_visible_gfn(vcpu, pte.raddr >> PAGE_SHIFT)) {
617 /* The guest's PTE is not mapped yet. Map on the host */
618 kvmppc_mmu_map_page(vcpu, &pte);
620 vcpu->stat.sp_storage++;
621 else if (vcpu->arch.mmu.is_dcbz32(vcpu) &&
622 (!(vcpu->arch.hflags & BOOK3S_HFLAG_DCBZ32)))
623 kvmppc_patch_dcbz(vcpu, &pte);
626 vcpu->stat.mmio_exits++;
627 vcpu->arch.paddr_accessed = pte.raddr;
628 r = kvmppc_emulate_mmio(run, vcpu);
629 if ( r == RESUME_HOST_NV )
636 static inline int get_fpr_index(int i)
644 /* Give up external provider (FPU, Altivec, VSX) */
645 void kvmppc_giveup_ext(struct kvm_vcpu *vcpu, ulong msr)
647 struct thread_struct *t = ¤t->thread;
648 u64 *vcpu_fpr = vcpu->arch.fpr;
650 u64 *vcpu_vsx = vcpu->arch.vsr;
652 u64 *thread_fpr = (u64*)t->fpr;
655 if (!(vcpu->arch.guest_owned_ext & msr))
659 printk(KERN_INFO "Giving up ext 0x%lx\n", msr);
665 for (i = 0; i < ARRAY_SIZE(vcpu->arch.fpr); i++)
666 vcpu_fpr[i] = thread_fpr[get_fpr_index(i)];
668 vcpu->arch.fpscr = t->fpscr.val;
671 #ifdef CONFIG_ALTIVEC
672 giveup_altivec(current);
673 memcpy(vcpu->arch.vr, t->vr, sizeof(vcpu->arch.vr));
674 vcpu->arch.vscr = t->vscr;
679 __giveup_vsx(current);
680 for (i = 0; i < ARRAY_SIZE(vcpu->arch.vsr); i++)
681 vcpu_vsx[i] = thread_fpr[get_fpr_index(i) + 1];
688 vcpu->arch.guest_owned_ext &= ~msr;
689 current->thread.regs->msr &= ~msr;
690 kvmppc_recalc_shadow_msr(vcpu);
693 static int kvmppc_read_inst(struct kvm_vcpu *vcpu)
695 ulong srr0 = kvmppc_get_pc(vcpu);
696 u32 last_inst = kvmppc_get_last_inst(vcpu);
699 ret = kvmppc_ld(vcpu, &srr0, sizeof(u32), &last_inst, false);
700 if (ret == -ENOENT) {
701 ulong msr = vcpu->arch.shared->msr;
703 msr = kvmppc_set_field(msr, 33, 33, 1);
704 msr = kvmppc_set_field(msr, 34, 36, 0);
705 vcpu->arch.shared->msr = kvmppc_set_field(msr, 42, 47, 0);
706 kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_INST_STORAGE);
707 return EMULATE_AGAIN;
713 static int kvmppc_check_ext(struct kvm_vcpu *vcpu, unsigned int exit_nr)
716 /* Need to do paired single emulation? */
717 if (!(vcpu->arch.hflags & BOOK3S_HFLAG_PAIRED_SINGLE))
720 /* Read out the instruction */
721 if (kvmppc_read_inst(vcpu) == EMULATE_DONE)
722 /* Need to emulate */
725 return EMULATE_AGAIN;
728 /* Handle external providers (FPU, Altivec, VSX) */
729 static int kvmppc_handle_ext(struct kvm_vcpu *vcpu, unsigned int exit_nr,
732 struct thread_struct *t = ¤t->thread;
733 u64 *vcpu_fpr = vcpu->arch.fpr;
735 u64 *vcpu_vsx = vcpu->arch.vsr;
737 u64 *thread_fpr = (u64*)t->fpr;
740 /* When we have paired singles, we emulate in software */
741 if (vcpu->arch.hflags & BOOK3S_HFLAG_PAIRED_SINGLE)
744 if (!(vcpu->arch.shared->msr & msr)) {
745 kvmppc_book3s_queue_irqprio(vcpu, exit_nr);
749 /* We already own the ext */
750 if (vcpu->arch.guest_owned_ext & msr) {
755 printk(KERN_INFO "Loading up ext 0x%lx\n", msr);
758 current->thread.regs->msr |= msr;
762 for (i = 0; i < ARRAY_SIZE(vcpu->arch.fpr); i++)
763 thread_fpr[get_fpr_index(i)] = vcpu_fpr[i];
765 t->fpscr.val = vcpu->arch.fpscr;
767 kvmppc_load_up_fpu();
770 #ifdef CONFIG_ALTIVEC
771 memcpy(t->vr, vcpu->arch.vr, sizeof(vcpu->arch.vr));
772 t->vscr = vcpu->arch.vscr;
774 kvmppc_load_up_altivec();
779 for (i = 0; i < ARRAY_SIZE(vcpu->arch.vsr); i++)
780 thread_fpr[get_fpr_index(i) + 1] = vcpu_vsx[i];
781 kvmppc_load_up_vsx();
788 vcpu->arch.guest_owned_ext |= msr;
790 kvmppc_recalc_shadow_msr(vcpu);
795 int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu,
796 unsigned int exit_nr)
800 vcpu->stat.sum_exits++;
802 run->exit_reason = KVM_EXIT_UNKNOWN;
803 run->ready_for_interrupt_injection = 1;
805 printk(KERN_EMERG "exit_nr=0x%x | pc=0x%lx | dar=0x%lx | dec=0x%x | msr=0x%lx\n",
806 exit_nr, kvmppc_get_pc(vcpu), kvmppc_get_fault_dar(vcpu),
807 kvmppc_get_dec(vcpu), to_svcpu(vcpu)->shadow_srr1);
808 #elif defined (EXIT_DEBUG_SIMPLE)
809 if ((exit_nr != 0x900) && (exit_nr != 0x500))
810 printk(KERN_EMERG "exit_nr=0x%x | pc=0x%lx | dar=0x%lx | msr=0x%lx\n",
811 exit_nr, kvmppc_get_pc(vcpu), kvmppc_get_fault_dar(vcpu),
812 vcpu->arch.shared->msr);
816 case BOOK3S_INTERRUPT_INST_STORAGE:
817 vcpu->stat.pf_instruc++;
819 #ifdef CONFIG_PPC_BOOK3S_32
820 /* We set segments as unused segments when invalidating them. So
821 * treat the respective fault as segment fault. */
822 if (to_svcpu(vcpu)->sr[kvmppc_get_pc(vcpu) >> SID_SHIFT]
824 kvmppc_mmu_map_segment(vcpu, kvmppc_get_pc(vcpu));
830 /* only care about PTEG not found errors, but leave NX alone */
831 if (to_svcpu(vcpu)->shadow_srr1 & 0x40000000) {
832 r = kvmppc_handle_pagefault(run, vcpu, kvmppc_get_pc(vcpu), exit_nr);
833 vcpu->stat.sp_instruc++;
834 } else if (vcpu->arch.mmu.is_dcbz32(vcpu) &&
835 (!(vcpu->arch.hflags & BOOK3S_HFLAG_DCBZ32))) {
837 * XXX If we do the dcbz hack we use the NX bit to flush&patch the page,
838 * so we can't use the NX bit inside the guest. Let's cross our fingers,
839 * that no guest that needs the dcbz hack does NX.
841 kvmppc_mmu_pte_flush(vcpu, kvmppc_get_pc(vcpu), ~0xFFFUL);
844 vcpu->arch.shared->msr |=
845 to_svcpu(vcpu)->shadow_srr1 & 0x58000000;
846 kvmppc_book3s_queue_irqprio(vcpu, exit_nr);
847 kvmppc_mmu_pte_flush(vcpu, kvmppc_get_pc(vcpu), ~0xFFFUL);
851 case BOOK3S_INTERRUPT_DATA_STORAGE:
853 ulong dar = kvmppc_get_fault_dar(vcpu);
854 vcpu->stat.pf_storage++;
856 #ifdef CONFIG_PPC_BOOK3S_32
857 /* We set segments as unused segments when invalidating them. So
858 * treat the respective fault as segment fault. */
859 if ((to_svcpu(vcpu)->sr[dar >> SID_SHIFT]) == SR_INVALID) {
860 kvmppc_mmu_map_segment(vcpu, dar);
866 /* The only case we need to handle is missing shadow PTEs */
867 if (to_svcpu(vcpu)->fault_dsisr & DSISR_NOHPTE) {
868 r = kvmppc_handle_pagefault(run, vcpu, dar, exit_nr);
870 vcpu->arch.shared->dar = dar;
871 vcpu->arch.shared->dsisr = to_svcpu(vcpu)->fault_dsisr;
872 kvmppc_book3s_queue_irqprio(vcpu, exit_nr);
873 kvmppc_mmu_pte_flush(vcpu, dar, ~0xFFFUL);
878 case BOOK3S_INTERRUPT_DATA_SEGMENT:
879 if (kvmppc_mmu_map_segment(vcpu, kvmppc_get_fault_dar(vcpu)) < 0) {
880 vcpu->arch.shared->dar = kvmppc_get_fault_dar(vcpu);
881 kvmppc_book3s_queue_irqprio(vcpu,
882 BOOK3S_INTERRUPT_DATA_SEGMENT);
886 case BOOK3S_INTERRUPT_INST_SEGMENT:
887 if (kvmppc_mmu_map_segment(vcpu, kvmppc_get_pc(vcpu)) < 0) {
888 kvmppc_book3s_queue_irqprio(vcpu,
889 BOOK3S_INTERRUPT_INST_SEGMENT);
893 /* We're good on these - the host merely wanted to get our attention */
894 case BOOK3S_INTERRUPT_DECREMENTER:
895 vcpu->stat.dec_exits++;
898 case BOOK3S_INTERRUPT_EXTERNAL:
899 vcpu->stat.ext_intr_exits++;
902 case BOOK3S_INTERRUPT_PERFMON:
905 case BOOK3S_INTERRUPT_PROGRAM:
907 enum emulation_result er;
911 flags = to_svcpu(vcpu)->shadow_srr1 & 0x1f0000ull;
913 if (vcpu->arch.shared->msr & MSR_PR) {
915 printk(KERN_INFO "Userspace triggered 0x700 exception at 0x%lx (0x%x)\n", kvmppc_get_pc(vcpu), kvmppc_get_last_inst(vcpu));
917 if ((kvmppc_get_last_inst(vcpu) & 0xff0007ff) !=
918 (INS_DCBZ & 0xfffffff7)) {
919 kvmppc_core_queue_program(vcpu, flags);
925 vcpu->stat.emulated_inst_exits++;
926 er = kvmppc_emulate_instruction(run, vcpu);
935 printk(KERN_CRIT "%s: emulation at %lx failed (%08x)\n",
936 __func__, kvmppc_get_pc(vcpu), kvmppc_get_last_inst(vcpu));
937 kvmppc_core_queue_program(vcpu, flags);
940 case EMULATE_DO_MMIO:
941 run->exit_reason = KVM_EXIT_MMIO;
949 case BOOK3S_INTERRUPT_SYSCALL:
950 // XXX make user settable
951 if (vcpu->arch.osi_enabled &&
952 (((u32)kvmppc_get_gpr(vcpu, 3)) == OSI_SC_MAGIC_R3) &&
953 (((u32)kvmppc_get_gpr(vcpu, 4)) == OSI_SC_MAGIC_R4)) {
954 u64 *gprs = run->osi.gprs;
957 run->exit_reason = KVM_EXIT_OSI;
958 for (i = 0; i < 32; i++)
959 gprs[i] = kvmppc_get_gpr(vcpu, i);
960 vcpu->arch.osi_needed = 1;
964 vcpu->stat.syscall_exits++;
965 kvmppc_book3s_queue_irqprio(vcpu, exit_nr);
969 case BOOK3S_INTERRUPT_FP_UNAVAIL:
970 case BOOK3S_INTERRUPT_ALTIVEC:
971 case BOOK3S_INTERRUPT_VSX:
976 case BOOK3S_INTERRUPT_FP_UNAVAIL: ext_msr = MSR_FP; break;
977 case BOOK3S_INTERRUPT_ALTIVEC: ext_msr = MSR_VEC; break;
978 case BOOK3S_INTERRUPT_VSX: ext_msr = MSR_VSX; break;
981 switch (kvmppc_check_ext(vcpu, exit_nr)) {
983 /* everything ok - let's enable the ext */
984 r = kvmppc_handle_ext(vcpu, exit_nr, ext_msr);
987 /* we need to emulate this instruction */
988 goto program_interrupt;
991 /* nothing to worry about - go again */
996 case BOOK3S_INTERRUPT_ALIGNMENT:
997 if (kvmppc_read_inst(vcpu) == EMULATE_DONE) {
998 vcpu->arch.shared->dsisr = kvmppc_alignment_dsisr(vcpu,
999 kvmppc_get_last_inst(vcpu));
1000 vcpu->arch.shared->dar = kvmppc_alignment_dar(vcpu,
1001 kvmppc_get_last_inst(vcpu));
1002 kvmppc_book3s_queue_irqprio(vcpu, exit_nr);
1006 case BOOK3S_INTERRUPT_MACHINE_CHECK:
1007 case BOOK3S_INTERRUPT_TRACE:
1008 kvmppc_book3s_queue_irqprio(vcpu, exit_nr);
1012 /* Ugh - bork here! What did we get? */
1013 printk(KERN_EMERG "exit_nr=0x%x | pc=0x%lx | msr=0x%lx\n",
1014 exit_nr, kvmppc_get_pc(vcpu), to_svcpu(vcpu)->shadow_srr1);
1021 if (!(r & RESUME_HOST)) {
1022 /* To avoid clobbering exit_reason, only check for signals if
1023 * we aren't already exiting to userspace for some other
1025 if (signal_pending(current)) {
1027 printk(KERN_EMERG "KVM: Going back to host\n");
1029 vcpu->stat.signal_exits++;
1030 run->exit_reason = KVM_EXIT_INTR;
1033 /* In case an interrupt came in that was triggered
1034 * from userspace (like DEC), we need to check what
1036 kvmppc_core_deliver_interrupts(vcpu);
1041 printk(KERN_EMERG "KVM exit: vcpu=0x%p pc=0x%lx r=0x%x\n", vcpu, kvmppc_get_pc(vcpu), r);
1047 int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu)
1052 int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
1056 regs->pc = kvmppc_get_pc(vcpu);
1057 regs->cr = kvmppc_get_cr(vcpu);
1058 regs->ctr = kvmppc_get_ctr(vcpu);
1059 regs->lr = kvmppc_get_lr(vcpu);
1060 regs->xer = kvmppc_get_xer(vcpu);
1061 regs->msr = vcpu->arch.shared->msr;
1062 regs->srr0 = vcpu->arch.shared->srr0;
1063 regs->srr1 = vcpu->arch.shared->srr1;
1064 regs->pid = vcpu->arch.pid;
1065 regs->sprg0 = vcpu->arch.shared->sprg0;
1066 regs->sprg1 = vcpu->arch.shared->sprg1;
1067 regs->sprg2 = vcpu->arch.shared->sprg2;
1068 regs->sprg3 = vcpu->arch.shared->sprg3;
1069 regs->sprg5 = vcpu->arch.sprg4;
1070 regs->sprg6 = vcpu->arch.sprg5;
1071 regs->sprg7 = vcpu->arch.sprg6;
1073 for (i = 0; i < ARRAY_SIZE(regs->gpr); i++)
1074 regs->gpr[i] = kvmppc_get_gpr(vcpu, i);
1079 int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
1083 kvmppc_set_pc(vcpu, regs->pc);
1084 kvmppc_set_cr(vcpu, regs->cr);
1085 kvmppc_set_ctr(vcpu, regs->ctr);
1086 kvmppc_set_lr(vcpu, regs->lr);
1087 kvmppc_set_xer(vcpu, regs->xer);
1088 kvmppc_set_msr(vcpu, regs->msr);
1089 vcpu->arch.shared->srr0 = regs->srr0;
1090 vcpu->arch.shared->srr1 = regs->srr1;
1091 vcpu->arch.shared->sprg0 = regs->sprg0;
1092 vcpu->arch.shared->sprg1 = regs->sprg1;
1093 vcpu->arch.shared->sprg2 = regs->sprg2;
1094 vcpu->arch.shared->sprg3 = regs->sprg3;
1095 vcpu->arch.sprg5 = regs->sprg4;
1096 vcpu->arch.sprg6 = regs->sprg5;
1097 vcpu->arch.sprg7 = regs->sprg6;
1099 for (i = 0; i < ARRAY_SIZE(regs->gpr); i++)
1100 kvmppc_set_gpr(vcpu, i, regs->gpr[i]);
1105 int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
1106 struct kvm_sregs *sregs)
1108 struct kvmppc_vcpu_book3s *vcpu3s = to_book3s(vcpu);
1111 sregs->pvr = vcpu->arch.pvr;
1113 sregs->u.s.sdr1 = to_book3s(vcpu)->sdr1;
1114 if (vcpu->arch.hflags & BOOK3S_HFLAG_SLB) {
1115 for (i = 0; i < 64; i++) {
1116 sregs->u.s.ppc64.slb[i].slbe = vcpu3s->slb[i].orige | i;
1117 sregs->u.s.ppc64.slb[i].slbv = vcpu3s->slb[i].origv;
1120 for (i = 0; i < 16; i++) {
1121 sregs->u.s.ppc32.sr[i] = vcpu3s->sr[i].raw;
1122 sregs->u.s.ppc32.sr[i] = vcpu3s->sr[i].raw;
1124 for (i = 0; i < 8; i++) {
1125 sregs->u.s.ppc32.ibat[i] = vcpu3s->ibat[i].raw;
1126 sregs->u.s.ppc32.dbat[i] = vcpu3s->dbat[i].raw;
1133 int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
1134 struct kvm_sregs *sregs)
1136 struct kvmppc_vcpu_book3s *vcpu3s = to_book3s(vcpu);
1139 kvmppc_set_pvr(vcpu, sregs->pvr);
1141 vcpu3s->sdr1 = sregs->u.s.sdr1;
1142 if (vcpu->arch.hflags & BOOK3S_HFLAG_SLB) {
1143 for (i = 0; i < 64; i++) {
1144 vcpu->arch.mmu.slbmte(vcpu, sregs->u.s.ppc64.slb[i].slbv,
1145 sregs->u.s.ppc64.slb[i].slbe);
1148 for (i = 0; i < 16; i++) {
1149 vcpu->arch.mmu.mtsrin(vcpu, i, sregs->u.s.ppc32.sr[i]);
1151 for (i = 0; i < 8; i++) {
1152 kvmppc_set_bat(vcpu, &(vcpu3s->ibat[i]), false,
1153 (u32)sregs->u.s.ppc32.ibat[i]);
1154 kvmppc_set_bat(vcpu, &(vcpu3s->ibat[i]), true,
1155 (u32)(sregs->u.s.ppc32.ibat[i] >> 32));
1156 kvmppc_set_bat(vcpu, &(vcpu3s->dbat[i]), false,
1157 (u32)sregs->u.s.ppc32.dbat[i]);
1158 kvmppc_set_bat(vcpu, &(vcpu3s->dbat[i]), true,
1159 (u32)(sregs->u.s.ppc32.dbat[i] >> 32));
1163 /* Flush the MMU after messing with the segments */
1164 kvmppc_mmu_pte_flush(vcpu, 0, 0);
1169 int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
1174 int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
1179 int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
1180 struct kvm_translation *tr)
1186 * Get (and clear) the dirty memory log for a memory slot.
1188 int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm,
1189 struct kvm_dirty_log *log)
1191 struct kvm_memory_slot *memslot;
1192 struct kvm_vcpu *vcpu;
1198 mutex_lock(&kvm->slots_lock);
1200 r = kvm_get_dirty_log(kvm, log, &is_dirty);
1204 /* If nothing is dirty, don't bother messing with page tables. */
1206 memslot = &kvm->memslots->memslots[log->slot];
1208 ga = memslot->base_gfn << PAGE_SHIFT;
1209 ga_end = ga + (memslot->npages << PAGE_SHIFT);
1211 kvm_for_each_vcpu(n, vcpu, kvm)
1212 kvmppc_mmu_pte_pflush(vcpu, ga, ga_end);
1214 n = kvm_dirty_bitmap_bytes(memslot);
1215 memset(memslot->dirty_bitmap, 0, n);
1220 mutex_unlock(&kvm->slots_lock);
1224 int kvmppc_core_check_processor_compat(void)
1229 struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm, unsigned int id)
1231 struct kvmppc_vcpu_book3s *vcpu_book3s;
1232 struct kvm_vcpu *vcpu;
1235 vcpu_book3s = vmalloc(sizeof(struct kvmppc_vcpu_book3s));
1239 memset(vcpu_book3s, 0, sizeof(struct kvmppc_vcpu_book3s));
1241 vcpu_book3s->shadow_vcpu = (struct kvmppc_book3s_shadow_vcpu *)
1242 kzalloc(sizeof(*vcpu_book3s->shadow_vcpu), GFP_KERNEL);
1243 if (!vcpu_book3s->shadow_vcpu)
1246 vcpu = &vcpu_book3s->vcpu;
1247 err = kvm_vcpu_init(vcpu, kvm, id);
1249 goto free_shadow_vcpu;
1251 vcpu->arch.shared = (void*)__get_free_page(GFP_KERNEL|__GFP_ZERO);
1252 if (!vcpu->arch.shared)
1255 vcpu->arch.host_retip = kvm_return_point;
1256 vcpu->arch.host_msr = mfmsr();
1257 #ifdef CONFIG_PPC_BOOK3S_64
1258 /* default to book3s_64 (970fx) */
1259 vcpu->arch.pvr = 0x3C0301;
1261 /* default to book3s_32 (750) */
1262 vcpu->arch.pvr = 0x84202;
1264 kvmppc_set_pvr(vcpu, vcpu->arch.pvr);
1265 vcpu_book3s->slb_nr = 64;
1267 /* remember where some real-mode handlers are */
1268 vcpu->arch.trampoline_lowmem = kvmppc_trampoline_lowmem;
1269 vcpu->arch.trampoline_enter = kvmppc_trampoline_enter;
1270 vcpu->arch.highmem_handler = (ulong)kvmppc_handler_highmem;
1271 #ifdef CONFIG_PPC_BOOK3S_64
1272 vcpu->arch.rmcall = *(ulong*)kvmppc_rmcall;
1274 vcpu->arch.rmcall = (ulong)kvmppc_rmcall;
1277 vcpu->arch.shadow_msr = MSR_USER64;
1279 err = kvmppc_mmu_init(vcpu);
1286 kvm_vcpu_uninit(vcpu);
1288 kfree(vcpu_book3s->shadow_vcpu);
1292 return ERR_PTR(err);
1295 void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu)
1297 struct kvmppc_vcpu_book3s *vcpu_book3s = to_book3s(vcpu);
1299 free_page((unsigned long)vcpu->arch.shared);
1300 kvm_vcpu_uninit(vcpu);
1301 kfree(vcpu_book3s->shadow_vcpu);
1305 extern int __kvmppc_vcpu_entry(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu);
1306 int __kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
1309 double fpr[32][TS_FPRWIDTH];
1312 #ifdef CONFIG_ALTIVEC
1315 unsigned long uninitialized_var(vrsave);
1323 /* No need to go into the guest when all we do is going out */
1324 if (signal_pending(current)) {
1325 kvm_run->exit_reason = KVM_EXIT_INTR;
1329 /* Save FPU state in stack */
1330 if (current->thread.regs->msr & MSR_FP)
1331 giveup_fpu(current);
1332 memcpy(fpr, current->thread.fpr, sizeof(current->thread.fpr));
1333 fpscr = current->thread.fpscr.val;
1334 fpexc_mode = current->thread.fpexc_mode;
1336 #ifdef CONFIG_ALTIVEC
1337 /* Save Altivec state in stack */
1338 used_vr = current->thread.used_vr;
1340 if (current->thread.regs->msr & MSR_VEC)
1341 giveup_altivec(current);
1342 memcpy(vr, current->thread.vr, sizeof(current->thread.vr));
1343 vscr = current->thread.vscr;
1344 vrsave = current->thread.vrsave;
1349 /* Save VSX state in stack */
1350 used_vsr = current->thread.used_vsr;
1351 if (used_vsr && (current->thread.regs->msr & MSR_VSX))
1352 __giveup_vsx(current);
1355 /* Remember the MSR with disabled extensions */
1356 ext_msr = current->thread.regs->msr;
1358 /* XXX we get called with irq disabled - change that! */
1361 /* Preload FPU if it's enabled */
1362 if (vcpu->arch.shared->msr & MSR_FP)
1363 kvmppc_handle_ext(vcpu, BOOK3S_INTERRUPT_FP_UNAVAIL, MSR_FP);
1365 ret = __kvmppc_vcpu_entry(kvm_run, vcpu);
1367 local_irq_disable();
1369 current->thread.regs->msr = ext_msr;
1371 /* Make sure we save the guest FPU/Altivec/VSX state */
1372 kvmppc_giveup_ext(vcpu, MSR_FP);
1373 kvmppc_giveup_ext(vcpu, MSR_VEC);
1374 kvmppc_giveup_ext(vcpu, MSR_VSX);
1376 /* Restore FPU state from stack */
1377 memcpy(current->thread.fpr, fpr, sizeof(current->thread.fpr));
1378 current->thread.fpscr.val = fpscr;
1379 current->thread.fpexc_mode = fpexc_mode;
1381 #ifdef CONFIG_ALTIVEC
1382 /* Restore Altivec state from stack */
1383 if (used_vr && current->thread.used_vr) {
1384 memcpy(current->thread.vr, vr, sizeof(current->thread.vr));
1385 current->thread.vscr = vscr;
1386 current->thread.vrsave = vrsave;
1388 current->thread.used_vr = used_vr;
1392 current->thread.used_vsr = used_vsr;
1398 static int kvmppc_book3s_init(void)
1402 r = kvm_init(NULL, sizeof(struct kvmppc_vcpu_book3s), 0,
1408 r = kvmppc_mmu_hpte_sysinit();
1413 static void kvmppc_book3s_exit(void)
1415 kvmppc_mmu_hpte_sysexit();
1419 module_init(kvmppc_book3s_init);
1420 module_exit(kvmppc_book3s_exit);