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>
21 #include <asm/cputable.h>
22 #include <asm/cacheflush.h>
23 #include <asm/tlbflush.h>
24 #include <asm/uaccess.h>
26 #include <asm/kvm_ppc.h>
27 #include <asm/kvm_book3s.h>
28 #include <asm/mmu_context.h>
29 #include <linux/sched.h>
30 #include <linux/vmalloc.h>
32 #define VCPU_STAT(x) offsetof(struct kvm_vcpu, stat.x), KVM_STAT_VCPU
34 /* #define EXIT_DEBUG */
35 /* #define EXIT_DEBUG_SIMPLE */
37 struct kvm_stats_debugfs_item debugfs_entries[] = {
38 { "exits", VCPU_STAT(sum_exits) },
39 { "mmio", VCPU_STAT(mmio_exits) },
40 { "sig", VCPU_STAT(signal_exits) },
41 { "sysc", VCPU_STAT(syscall_exits) },
42 { "inst_emu", VCPU_STAT(emulated_inst_exits) },
43 { "dec", VCPU_STAT(dec_exits) },
44 { "ext_intr", VCPU_STAT(ext_intr_exits) },
45 { "queue_intr", VCPU_STAT(queue_intr) },
46 { "halt_wakeup", VCPU_STAT(halt_wakeup) },
47 { "pf_storage", VCPU_STAT(pf_storage) },
48 { "sp_storage", VCPU_STAT(sp_storage) },
49 { "pf_instruc", VCPU_STAT(pf_instruc) },
50 { "sp_instruc", VCPU_STAT(sp_instruc) },
51 { "ld", VCPU_STAT(ld) },
52 { "ld_slow", VCPU_STAT(ld_slow) },
53 { "st", VCPU_STAT(st) },
54 { "st_slow", VCPU_STAT(st_slow) },
58 void kvmppc_core_load_host_debugstate(struct kvm_vcpu *vcpu)
62 void kvmppc_core_load_guest_debugstate(struct kvm_vcpu *vcpu)
66 void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
68 memcpy(get_paca()->kvm_slb, to_book3s(vcpu)->slb_shadow, sizeof(get_paca()->kvm_slb));
69 get_paca()->kvm_slb_max = to_book3s(vcpu)->slb_shadow_max;
72 void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu)
74 memcpy(to_book3s(vcpu)->slb_shadow, get_paca()->kvm_slb, sizeof(get_paca()->kvm_slb));
75 to_book3s(vcpu)->slb_shadow_max = get_paca()->kvm_slb_max;
78 #if defined(EXIT_DEBUG)
79 static u32 kvmppc_get_dec(struct kvm_vcpu *vcpu)
81 u64 jd = mftb() - vcpu->arch.dec_jiffies;
82 return vcpu->arch.dec - jd;
86 void kvmppc_set_msr(struct kvm_vcpu *vcpu, u64 msr)
88 ulong old_msr = vcpu->arch.msr;
91 printk(KERN_INFO "KVM: Set MSR to 0x%llx\n", msr);
93 msr &= to_book3s(vcpu)->msr_mask;
95 vcpu->arch.shadow_msr = msr | MSR_USER32;
96 vcpu->arch.shadow_msr &= ( MSR_VEC | MSR_VSX | MSR_FP | MSR_FE0 |
97 MSR_USER64 | MSR_SE | MSR_BE | MSR_DE |
100 if (msr & (MSR_WE|MSR_POW)) {
101 if (!vcpu->arch.pending_exceptions) {
102 kvm_vcpu_block(vcpu);
103 vcpu->stat.halt_wakeup++;
107 if (((vcpu->arch.msr & (MSR_IR|MSR_DR)) != (old_msr & (MSR_IR|MSR_DR))) ||
108 (vcpu->arch.msr & MSR_PR) != (old_msr & MSR_PR)) {
109 kvmppc_mmu_flush_segments(vcpu);
110 kvmppc_mmu_map_segment(vcpu, vcpu->arch.pc);
114 void kvmppc_inject_interrupt(struct kvm_vcpu *vcpu, int vec, u64 flags)
116 vcpu->arch.srr0 = vcpu->arch.pc;
117 vcpu->arch.srr1 = vcpu->arch.msr | flags;
118 vcpu->arch.pc = to_book3s(vcpu)->hior + vec;
119 vcpu->arch.mmu.reset_msr(vcpu);
122 static int kvmppc_book3s_vec2irqprio(unsigned int vec)
127 case 0x100: prio = BOOK3S_IRQPRIO_SYSTEM_RESET; break;
128 case 0x200: prio = BOOK3S_IRQPRIO_MACHINE_CHECK; break;
129 case 0x300: prio = BOOK3S_IRQPRIO_DATA_STORAGE; break;
130 case 0x380: prio = BOOK3S_IRQPRIO_DATA_SEGMENT; break;
131 case 0x400: prio = BOOK3S_IRQPRIO_INST_STORAGE; break;
132 case 0x480: prio = BOOK3S_IRQPRIO_INST_SEGMENT; break;
133 case 0x500: prio = BOOK3S_IRQPRIO_EXTERNAL; break;
134 case 0x600: prio = BOOK3S_IRQPRIO_ALIGNMENT; break;
135 case 0x700: prio = BOOK3S_IRQPRIO_PROGRAM; break;
136 case 0x800: prio = BOOK3S_IRQPRIO_FP_UNAVAIL; break;
137 case 0x900: prio = BOOK3S_IRQPRIO_DECREMENTER; break;
138 case 0xc00: prio = BOOK3S_IRQPRIO_SYSCALL; break;
139 case 0xd00: prio = BOOK3S_IRQPRIO_DEBUG; break;
140 case 0xf20: prio = BOOK3S_IRQPRIO_ALTIVEC; break;
141 case 0xf40: prio = BOOK3S_IRQPRIO_VSX; break;
142 default: prio = BOOK3S_IRQPRIO_MAX; break;
148 static void kvmppc_book3s_dequeue_irqprio(struct kvm_vcpu *vcpu,
151 clear_bit(kvmppc_book3s_vec2irqprio(vec),
152 &vcpu->arch.pending_exceptions);
155 void kvmppc_book3s_queue_irqprio(struct kvm_vcpu *vcpu, unsigned int vec)
157 vcpu->stat.queue_intr++;
159 set_bit(kvmppc_book3s_vec2irqprio(vec),
160 &vcpu->arch.pending_exceptions);
162 printk(KERN_INFO "Queueing interrupt %x\n", vec);
167 void kvmppc_core_queue_program(struct kvm_vcpu *vcpu)
169 kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_PROGRAM);
172 void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu)
174 kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_DECREMENTER);
177 int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu)
179 return test_bit(BOOK3S_INTERRUPT_DECREMENTER >> 7, &vcpu->arch.pending_exceptions);
182 void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu)
184 kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_DECREMENTER);
187 void kvmppc_core_queue_external(struct kvm_vcpu *vcpu,
188 struct kvm_interrupt *irq)
190 kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_EXTERNAL);
193 int kvmppc_book3s_irqprio_deliver(struct kvm_vcpu *vcpu, unsigned int priority)
199 case BOOK3S_IRQPRIO_DECREMENTER:
200 deliver = vcpu->arch.msr & MSR_EE;
201 vec = BOOK3S_INTERRUPT_DECREMENTER;
203 case BOOK3S_IRQPRIO_EXTERNAL:
204 deliver = vcpu->arch.msr & MSR_EE;
205 vec = BOOK3S_INTERRUPT_EXTERNAL;
207 case BOOK3S_IRQPRIO_SYSTEM_RESET:
208 vec = BOOK3S_INTERRUPT_SYSTEM_RESET;
210 case BOOK3S_IRQPRIO_MACHINE_CHECK:
211 vec = BOOK3S_INTERRUPT_MACHINE_CHECK;
213 case BOOK3S_IRQPRIO_DATA_STORAGE:
214 vec = BOOK3S_INTERRUPT_DATA_STORAGE;
216 case BOOK3S_IRQPRIO_INST_STORAGE:
217 vec = BOOK3S_INTERRUPT_INST_STORAGE;
219 case BOOK3S_IRQPRIO_DATA_SEGMENT:
220 vec = BOOK3S_INTERRUPT_DATA_SEGMENT;
222 case BOOK3S_IRQPRIO_INST_SEGMENT:
223 vec = BOOK3S_INTERRUPT_INST_SEGMENT;
225 case BOOK3S_IRQPRIO_ALIGNMENT:
226 vec = BOOK3S_INTERRUPT_ALIGNMENT;
228 case BOOK3S_IRQPRIO_PROGRAM:
229 vec = BOOK3S_INTERRUPT_PROGRAM;
231 case BOOK3S_IRQPRIO_VSX:
232 vec = BOOK3S_INTERRUPT_VSX;
234 case BOOK3S_IRQPRIO_ALTIVEC:
235 vec = BOOK3S_INTERRUPT_ALTIVEC;
237 case BOOK3S_IRQPRIO_FP_UNAVAIL:
238 vec = BOOK3S_INTERRUPT_FP_UNAVAIL;
240 case BOOK3S_IRQPRIO_SYSCALL:
241 vec = BOOK3S_INTERRUPT_SYSCALL;
243 case BOOK3S_IRQPRIO_DEBUG:
244 vec = BOOK3S_INTERRUPT_TRACE;
246 case BOOK3S_IRQPRIO_PERFORMANCE_MONITOR:
247 vec = BOOK3S_INTERRUPT_PERFMON;
251 printk(KERN_ERR "KVM: Unknown interrupt: 0x%x\n", priority);
256 printk(KERN_INFO "Deliver interrupt 0x%x? %x\n", vec, deliver);
260 kvmppc_inject_interrupt(vcpu, vec, 0ULL);
265 void kvmppc_core_deliver_interrupts(struct kvm_vcpu *vcpu)
267 unsigned long *pending = &vcpu->arch.pending_exceptions;
268 unsigned int priority;
271 if (vcpu->arch.pending_exceptions)
272 printk(KERN_EMERG "KVM: Check pending: %lx\n", vcpu->arch.pending_exceptions);
274 priority = __ffs(*pending);
275 while (priority <= (sizeof(unsigned int) * 8)) {
276 if (kvmppc_book3s_irqprio_deliver(vcpu, priority) &&
277 (priority != BOOK3S_IRQPRIO_DECREMENTER)) {
278 /* DEC interrupts get cleared by mtdec */
279 clear_bit(priority, &vcpu->arch.pending_exceptions);
283 priority = find_next_bit(pending,
284 BITS_PER_BYTE * sizeof(*pending),
289 void kvmppc_set_pvr(struct kvm_vcpu *vcpu, u32 pvr)
291 vcpu->arch.hflags &= ~BOOK3S_HFLAG_SLB;
292 vcpu->arch.pvr = pvr;
293 if ((pvr >= 0x330000) && (pvr < 0x70330000)) {
294 kvmppc_mmu_book3s_64_init(vcpu);
295 to_book3s(vcpu)->hior = 0xfff00000;
296 to_book3s(vcpu)->msr_mask = 0xffffffffffffffffULL;
298 kvmppc_mmu_book3s_32_init(vcpu);
299 to_book3s(vcpu)->hior = 0;
300 to_book3s(vcpu)->msr_mask = 0xffffffffULL;
303 /* If we are in hypervisor level on 970, we can tell the CPU to
304 * treat DCBZ as 32 bytes store */
305 vcpu->arch.hflags &= ~BOOK3S_HFLAG_DCBZ32;
306 if (vcpu->arch.mmu.is_dcbz32(vcpu) && (mfmsr() & MSR_HV) &&
307 !strcmp(cur_cpu_spec->platform, "ppc970"))
308 vcpu->arch.hflags |= BOOK3S_HFLAG_DCBZ32;
312 /* Book3s_32 CPUs always have 32 bytes cache line size, which Linux assumes. To
313 * make Book3s_32 Linux work on Book3s_64, we have to make sure we trap dcbz to
314 * emulate 32 bytes dcbz length.
316 * The Book3s_64 inventors also realized this case and implemented a special bit
317 * in the HID5 register, which is a hypervisor ressource. Thus we can't use it.
319 * My approach here is to patch the dcbz instruction on executing pages.
321 static void kvmppc_patch_dcbz(struct kvm_vcpu *vcpu, struct kvmppc_pte *pte)
323 bool touched = false;
328 hpage = gfn_to_hva(vcpu->kvm, pte->raddr >> PAGE_SHIFT);
329 if (kvm_is_error_hva(hpage))
332 hpage |= pte->raddr & ~PAGE_MASK;
335 page = vmalloc(HW_PAGE_SIZE);
337 if (copy_from_user(page, (void __user *)hpage, HW_PAGE_SIZE))
340 for (i=0; i < HW_PAGE_SIZE / 4; i++)
341 if ((page[i] & 0xff0007ff) == INS_DCBZ) {
342 page[i] &= 0xfffffff7; // reserved instruction, so we trap
347 copy_to_user((void __user *)hpage, page, HW_PAGE_SIZE);
353 static int kvmppc_xlate(struct kvm_vcpu *vcpu, ulong eaddr, bool data,
354 struct kvmppc_pte *pte)
356 int relocated = (vcpu->arch.msr & (data ? MSR_DR : MSR_IR));
360 r = vcpu->arch.mmu.xlate(vcpu, eaddr, pte, data);
363 pte->raddr = eaddr & 0xffffffff;
364 pte->vpage = eaddr >> 12;
365 switch (vcpu->arch.msr & (MSR_DR|MSR_IR)) {
367 pte->vpage |= VSID_REAL;
369 pte->vpage |= VSID_REAL_DR;
371 pte->vpage |= VSID_REAL_IR;
373 pte->may_read = true;
374 pte->may_write = true;
375 pte->may_execute = true;
382 static hva_t kvmppc_bad_hva(void)
387 static hva_t kvmppc_pte_to_hva(struct kvm_vcpu *vcpu, struct kvmppc_pte *pte,
392 if (read && !pte->may_read)
395 if (!read && !pte->may_write)
398 hpage = gfn_to_hva(vcpu->kvm, pte->raddr >> PAGE_SHIFT);
399 if (kvm_is_error_hva(hpage))
402 return hpage | (pte->raddr & ~PAGE_MASK);
404 return kvmppc_bad_hva();
407 int kvmppc_st(struct kvm_vcpu *vcpu, ulong eaddr, int size, void *ptr)
409 struct kvmppc_pte pte;
414 if (kvmppc_xlate(vcpu, eaddr, false, &pte))
417 hva = kvmppc_pte_to_hva(vcpu, &pte, false);
418 if (kvm_is_error_hva(hva))
421 if (copy_to_user((void __user *)hva, ptr, size)) {
422 printk(KERN_INFO "kvmppc_st at 0x%lx failed\n", hva);
432 int kvmppc_ld(struct kvm_vcpu *vcpu, ulong eaddr, int size, void *ptr,
435 struct kvmppc_pte pte;
440 if (kvmppc_xlate(vcpu, eaddr, data, &pte))
443 hva = kvmppc_pte_to_hva(vcpu, &pte, true);
444 if (kvm_is_error_hva(hva))
447 if (copy_from_user(ptr, (void __user *)hva, size)) {
448 printk(KERN_INFO "kvmppc_ld at 0x%lx failed\n", hva);
458 static int kvmppc_visible_gfn(struct kvm_vcpu *vcpu, gfn_t gfn)
460 return kvm_is_visible_gfn(vcpu->kvm, gfn);
463 int kvmppc_handle_pagefault(struct kvm_run *run, struct kvm_vcpu *vcpu,
464 ulong eaddr, int vec)
466 bool data = (vec == BOOK3S_INTERRUPT_DATA_STORAGE);
467 int r = RESUME_GUEST;
470 struct kvmppc_pte pte;
471 bool is_mmio = false;
473 if ( vec == BOOK3S_INTERRUPT_DATA_STORAGE ) {
474 relocated = (vcpu->arch.msr & MSR_DR);
476 relocated = (vcpu->arch.msr & MSR_IR);
479 /* Resolve real address if translation turned on */
481 page_found = vcpu->arch.mmu.xlate(vcpu, eaddr, &pte, data);
483 pte.may_execute = true;
485 pte.may_write = true;
486 pte.raddr = eaddr & 0xffffffff;
488 pte.vpage = eaddr >> 12;
489 switch (vcpu->arch.msr & (MSR_DR|MSR_IR)) {
491 pte.vpage |= VSID_REAL;
493 pte.vpage |= VSID_REAL_DR;
495 pte.vpage |= VSID_REAL_IR;
499 if (vcpu->arch.mmu.is_dcbz32(vcpu) &&
500 (!(vcpu->arch.hflags & BOOK3S_HFLAG_DCBZ32))) {
502 * If we do the dcbz hack, we have to NX on every execution,
503 * so we can patch the executing code. This renders our guest
506 pte.may_execute = !data;
509 if (page_found == -ENOENT) {
510 /* Page not found in guest PTE entries */
511 vcpu->arch.dear = vcpu->arch.fault_dear;
512 to_book3s(vcpu)->dsisr = vcpu->arch.fault_dsisr;
513 vcpu->arch.msr |= (vcpu->arch.shadow_msr & 0x00000000f8000000ULL);
514 kvmppc_book3s_queue_irqprio(vcpu, vec);
515 } else if (page_found == -EPERM) {
516 /* Storage protection */
517 vcpu->arch.dear = vcpu->arch.fault_dear;
518 to_book3s(vcpu)->dsisr = vcpu->arch.fault_dsisr & ~DSISR_NOHPTE;
519 to_book3s(vcpu)->dsisr |= DSISR_PROTFAULT;
520 vcpu->arch.msr |= (vcpu->arch.shadow_msr & 0x00000000f8000000ULL);
521 kvmppc_book3s_queue_irqprio(vcpu, vec);
522 } else if (page_found == -EINVAL) {
523 /* Page not found in guest SLB */
524 vcpu->arch.dear = vcpu->arch.fault_dear;
525 kvmppc_book3s_queue_irqprio(vcpu, vec + 0x80);
526 } else if (!is_mmio &&
527 kvmppc_visible_gfn(vcpu, pte.raddr >> PAGE_SHIFT)) {
528 /* The guest's PTE is not mapped yet. Map on the host */
529 kvmppc_mmu_map_page(vcpu, &pte);
531 vcpu->stat.sp_storage++;
532 else if (vcpu->arch.mmu.is_dcbz32(vcpu) &&
533 (!(vcpu->arch.hflags & BOOK3S_HFLAG_DCBZ32)))
534 kvmppc_patch_dcbz(vcpu, &pte);
537 vcpu->stat.mmio_exits++;
538 vcpu->arch.paddr_accessed = pte.raddr;
539 r = kvmppc_emulate_mmio(run, vcpu);
540 if ( r == RESUME_HOST_NV )
547 int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu,
548 unsigned int exit_nr)
552 vcpu->stat.sum_exits++;
554 run->exit_reason = KVM_EXIT_UNKNOWN;
555 run->ready_for_interrupt_injection = 1;
557 printk(KERN_EMERG "exit_nr=0x%x | pc=0x%lx | dar=0x%lx | dec=0x%x | msr=0x%lx\n",
558 exit_nr, vcpu->arch.pc, vcpu->arch.fault_dear,
559 kvmppc_get_dec(vcpu), vcpu->arch.msr);
560 #elif defined (EXIT_DEBUG_SIMPLE)
561 if ((exit_nr != 0x900) && (exit_nr != 0x500))
562 printk(KERN_EMERG "exit_nr=0x%x | pc=0x%lx | dar=0x%lx | msr=0x%lx\n",
563 exit_nr, vcpu->arch.pc, vcpu->arch.fault_dear,
568 case BOOK3S_INTERRUPT_INST_STORAGE:
569 vcpu->stat.pf_instruc++;
570 /* only care about PTEG not found errors, but leave NX alone */
571 if (vcpu->arch.shadow_msr & 0x40000000) {
572 r = kvmppc_handle_pagefault(run, vcpu, vcpu->arch.pc, exit_nr);
573 vcpu->stat.sp_instruc++;
574 } else if (vcpu->arch.mmu.is_dcbz32(vcpu) &&
575 (!(vcpu->arch.hflags & BOOK3S_HFLAG_DCBZ32))) {
577 * XXX If we do the dcbz hack we use the NX bit to flush&patch the page,
578 * so we can't use the NX bit inside the guest. Let's cross our fingers,
579 * that no guest that needs the dcbz hack does NX.
581 kvmppc_mmu_pte_flush(vcpu, vcpu->arch.pc, ~0xFFFULL);
583 vcpu->arch.msr |= (vcpu->arch.shadow_msr & 0x58000000);
584 kvmppc_book3s_queue_irqprio(vcpu, exit_nr);
585 kvmppc_mmu_pte_flush(vcpu, vcpu->arch.pc, ~0xFFFULL);
589 case BOOK3S_INTERRUPT_DATA_STORAGE:
590 vcpu->stat.pf_storage++;
591 /* The only case we need to handle is missing shadow PTEs */
592 if (vcpu->arch.fault_dsisr & DSISR_NOHPTE) {
593 r = kvmppc_handle_pagefault(run, vcpu, vcpu->arch.fault_dear, exit_nr);
595 vcpu->arch.dear = vcpu->arch.fault_dear;
596 to_book3s(vcpu)->dsisr = vcpu->arch.fault_dsisr;
597 kvmppc_book3s_queue_irqprio(vcpu, exit_nr);
598 kvmppc_mmu_pte_flush(vcpu, vcpu->arch.dear, ~0xFFFULL);
602 case BOOK3S_INTERRUPT_DATA_SEGMENT:
603 if (kvmppc_mmu_map_segment(vcpu, vcpu->arch.fault_dear) < 0) {
604 vcpu->arch.dear = vcpu->arch.fault_dear;
605 kvmppc_book3s_queue_irqprio(vcpu,
606 BOOK3S_INTERRUPT_DATA_SEGMENT);
610 case BOOK3S_INTERRUPT_INST_SEGMENT:
611 if (kvmppc_mmu_map_segment(vcpu, vcpu->arch.pc) < 0) {
612 kvmppc_book3s_queue_irqprio(vcpu,
613 BOOK3S_INTERRUPT_INST_SEGMENT);
617 /* We're good on these - the host merely wanted to get our attention */
618 case BOOK3S_INTERRUPT_DECREMENTER:
619 vcpu->stat.dec_exits++;
622 case BOOK3S_INTERRUPT_EXTERNAL:
623 vcpu->stat.ext_intr_exits++;
626 case BOOK3S_INTERRUPT_PROGRAM:
628 enum emulation_result er;
630 if (vcpu->arch.msr & MSR_PR) {
632 printk(KERN_INFO "Userspace triggered 0x700 exception at 0x%lx (0x%x)\n", vcpu->arch.pc, vcpu->arch.last_inst);
634 if ((vcpu->arch.last_inst & 0xff0007ff) !=
635 (INS_DCBZ & 0xfffffff7)) {
636 kvmppc_book3s_queue_irqprio(vcpu, exit_nr);
642 vcpu->stat.emulated_inst_exits++;
643 er = kvmppc_emulate_instruction(run, vcpu);
649 printk(KERN_CRIT "%s: emulation at %lx failed (%08x)\n",
650 __func__, vcpu->arch.pc, vcpu->arch.last_inst);
651 kvmppc_book3s_queue_irqprio(vcpu, exit_nr);
659 case BOOK3S_INTERRUPT_SYSCALL:
661 printk(KERN_INFO "Syscall Nr %d\n", (int)kvmppc_get_gpr(vcpu, 0));
663 vcpu->stat.syscall_exits++;
664 kvmppc_book3s_queue_irqprio(vcpu, exit_nr);
667 case BOOK3S_INTERRUPT_MACHINE_CHECK:
668 case BOOK3S_INTERRUPT_FP_UNAVAIL:
669 case BOOK3S_INTERRUPT_TRACE:
670 case BOOK3S_INTERRUPT_ALTIVEC:
671 case BOOK3S_INTERRUPT_VSX:
672 kvmppc_book3s_queue_irqprio(vcpu, exit_nr);
676 /* Ugh - bork here! What did we get? */
677 printk(KERN_EMERG "exit_nr=0x%x | pc=0x%lx | msr=0x%lx\n", exit_nr, vcpu->arch.pc, vcpu->arch.shadow_msr);
684 if (!(r & RESUME_HOST)) {
685 /* To avoid clobbering exit_reason, only check for signals if
686 * we aren't already exiting to userspace for some other
688 if (signal_pending(current)) {
690 printk(KERN_EMERG "KVM: Going back to host\n");
692 vcpu->stat.signal_exits++;
693 run->exit_reason = KVM_EXIT_INTR;
696 /* In case an interrupt came in that was triggered
697 * from userspace (like DEC), we need to check what
699 kvmppc_core_deliver_interrupts(vcpu);
704 printk(KERN_EMERG "KVM exit: vcpu=0x%p pc=0x%lx r=0x%x\n", vcpu, vcpu->arch.pc, r);
710 int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu)
715 int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
719 regs->pc = vcpu->arch.pc;
720 regs->cr = kvmppc_get_cr(vcpu);
721 regs->ctr = vcpu->arch.ctr;
722 regs->lr = vcpu->arch.lr;
723 regs->xer = kvmppc_get_xer(vcpu);
724 regs->msr = vcpu->arch.msr;
725 regs->srr0 = vcpu->arch.srr0;
726 regs->srr1 = vcpu->arch.srr1;
727 regs->pid = vcpu->arch.pid;
728 regs->sprg0 = vcpu->arch.sprg0;
729 regs->sprg1 = vcpu->arch.sprg1;
730 regs->sprg2 = vcpu->arch.sprg2;
731 regs->sprg3 = vcpu->arch.sprg3;
732 regs->sprg5 = vcpu->arch.sprg4;
733 regs->sprg6 = vcpu->arch.sprg5;
734 regs->sprg7 = vcpu->arch.sprg6;
736 for (i = 0; i < ARRAY_SIZE(regs->gpr); i++)
737 regs->gpr[i] = kvmppc_get_gpr(vcpu, i);
742 int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
746 vcpu->arch.pc = regs->pc;
747 kvmppc_set_cr(vcpu, regs->cr);
748 vcpu->arch.ctr = regs->ctr;
749 vcpu->arch.lr = regs->lr;
750 kvmppc_set_xer(vcpu, regs->xer);
751 kvmppc_set_msr(vcpu, regs->msr);
752 vcpu->arch.srr0 = regs->srr0;
753 vcpu->arch.srr1 = regs->srr1;
754 vcpu->arch.sprg0 = regs->sprg0;
755 vcpu->arch.sprg1 = regs->sprg1;
756 vcpu->arch.sprg2 = regs->sprg2;
757 vcpu->arch.sprg3 = regs->sprg3;
758 vcpu->arch.sprg5 = regs->sprg4;
759 vcpu->arch.sprg6 = regs->sprg5;
760 vcpu->arch.sprg7 = regs->sprg6;
762 for (i = 0; i < ARRAY_SIZE(regs->gpr); i++)
763 kvmppc_set_gpr(vcpu, i, regs->gpr[i]);
768 int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
769 struct kvm_sregs *sregs)
771 struct kvmppc_vcpu_book3s *vcpu3s = to_book3s(vcpu);
774 sregs->pvr = vcpu->arch.pvr;
776 sregs->u.s.sdr1 = to_book3s(vcpu)->sdr1;
777 if (vcpu->arch.hflags & BOOK3S_HFLAG_SLB) {
778 for (i = 0; i < 64; i++) {
779 sregs->u.s.ppc64.slb[i].slbe = vcpu3s->slb[i].orige | i;
780 sregs->u.s.ppc64.slb[i].slbv = vcpu3s->slb[i].origv;
783 for (i = 0; i < 16; i++) {
784 sregs->u.s.ppc32.sr[i] = vcpu3s->sr[i].raw;
785 sregs->u.s.ppc32.sr[i] = vcpu3s->sr[i].raw;
787 for (i = 0; i < 8; i++) {
788 sregs->u.s.ppc32.ibat[i] = vcpu3s->ibat[i].raw;
789 sregs->u.s.ppc32.dbat[i] = vcpu3s->dbat[i].raw;
795 int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
796 struct kvm_sregs *sregs)
798 struct kvmppc_vcpu_book3s *vcpu3s = to_book3s(vcpu);
801 kvmppc_set_pvr(vcpu, sregs->pvr);
803 vcpu3s->sdr1 = sregs->u.s.sdr1;
804 if (vcpu->arch.hflags & BOOK3S_HFLAG_SLB) {
805 for (i = 0; i < 64; i++) {
806 vcpu->arch.mmu.slbmte(vcpu, sregs->u.s.ppc64.slb[i].slbv,
807 sregs->u.s.ppc64.slb[i].slbe);
810 for (i = 0; i < 16; i++) {
811 vcpu->arch.mmu.mtsrin(vcpu, i, sregs->u.s.ppc32.sr[i]);
813 for (i = 0; i < 8; i++) {
814 kvmppc_set_bat(vcpu, &(vcpu3s->ibat[i]), false,
815 (u32)sregs->u.s.ppc32.ibat[i]);
816 kvmppc_set_bat(vcpu, &(vcpu3s->ibat[i]), true,
817 (u32)(sregs->u.s.ppc32.ibat[i] >> 32));
818 kvmppc_set_bat(vcpu, &(vcpu3s->dbat[i]), false,
819 (u32)sregs->u.s.ppc32.dbat[i]);
820 kvmppc_set_bat(vcpu, &(vcpu3s->dbat[i]), true,
821 (u32)(sregs->u.s.ppc32.dbat[i] >> 32));
825 /* Flush the MMU after messing with the segments */
826 kvmppc_mmu_pte_flush(vcpu, 0, 0);
830 int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
835 int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
840 int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
841 struct kvm_translation *tr)
847 * Get (and clear) the dirty memory log for a memory slot.
849 int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm,
850 struct kvm_dirty_log *log)
852 struct kvm_memory_slot *memslot;
853 struct kvm_vcpu *vcpu;
858 mutex_lock(&kvm->slots_lock);
860 r = kvm_get_dirty_log(kvm, log, &is_dirty);
864 /* If nothing is dirty, don't bother messing with page tables. */
866 memslot = &kvm->memslots->memslots[log->slot];
868 ga = memslot->base_gfn << PAGE_SHIFT;
869 ga_end = ga + (memslot->npages << PAGE_SHIFT);
871 kvm_for_each_vcpu(n, vcpu, kvm)
872 kvmppc_mmu_pte_pflush(vcpu, ga, ga_end);
874 n = ALIGN(memslot->npages, BITS_PER_LONG) / 8;
875 memset(memslot->dirty_bitmap, 0, n);
880 mutex_unlock(&kvm->slots_lock);
884 int kvmppc_core_check_processor_compat(void)
889 struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm, unsigned int id)
891 struct kvmppc_vcpu_book3s *vcpu_book3s;
892 struct kvm_vcpu *vcpu;
895 vcpu_book3s = (struct kvmppc_vcpu_book3s *)__get_free_pages( GFP_KERNEL | __GFP_ZERO,
896 get_order(sizeof(struct kvmppc_vcpu_book3s)));
902 vcpu = &vcpu_book3s->vcpu;
903 err = kvm_vcpu_init(vcpu, kvm, id);
907 vcpu->arch.host_retip = kvm_return_point;
908 vcpu->arch.host_msr = mfmsr();
909 /* default to book3s_64 (970fx) */
910 vcpu->arch.pvr = 0x3C0301;
911 kvmppc_set_pvr(vcpu, vcpu->arch.pvr);
912 vcpu_book3s->slb_nr = 64;
914 /* remember where some real-mode handlers are */
915 vcpu->arch.trampoline_lowmem = kvmppc_trampoline_lowmem;
916 vcpu->arch.trampoline_enter = kvmppc_trampoline_enter;
917 vcpu->arch.highmem_handler = (ulong)kvmppc_handler_highmem;
919 vcpu->arch.shadow_msr = MSR_USER64;
921 err = __init_new_context();
924 vcpu_book3s->context_id = err;
926 vcpu_book3s->vsid_max = ((vcpu_book3s->context_id + 1) << USER_ESID_BITS) - 1;
927 vcpu_book3s->vsid_first = vcpu_book3s->context_id << USER_ESID_BITS;
928 vcpu_book3s->vsid_next = vcpu_book3s->vsid_first;
933 free_pages((long)vcpu_book3s, get_order(sizeof(struct kvmppc_vcpu_book3s)));
938 void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu)
940 struct kvmppc_vcpu_book3s *vcpu_book3s = to_book3s(vcpu);
942 __destroy_context(vcpu_book3s->context_id);
943 kvm_vcpu_uninit(vcpu);
944 free_pages((long)vcpu_book3s, get_order(sizeof(struct kvmppc_vcpu_book3s)));
947 extern int __kvmppc_vcpu_entry(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu);
948 int __kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
952 /* No need to go into the guest when all we do is going out */
953 if (signal_pending(current)) {
954 kvm_run->exit_reason = KVM_EXIT_INTR;
958 /* XXX we get called with irq disabled - change that! */
961 ret = __kvmppc_vcpu_entry(kvm_run, vcpu);
968 static int kvmppc_book3s_init(void)
970 return kvm_init(NULL, sizeof(struct kvmppc_vcpu_book3s), THIS_MODULE);
973 static void kvmppc_book3s_exit(void)
978 module_init(kvmppc_book3s_init);
979 module_exit(kvmppc_book3s_exit);