Merge branch 'kvm-updates/2.6.29' of git://git.kernel.org/pub/scm/linux/kernel/git...
[linux-2.6.git] / arch / powerpc / kvm / booke.c
1 /*
2  * This program is free software; you can redistribute it and/or modify
3  * it under the terms of the GNU General Public License, version 2, as
4  * published by the Free Software Foundation.
5  *
6  * This program is distributed in the hope that it will be useful,
7  * but WITHOUT ANY WARRANTY; without even the implied warranty of
8  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
9  * GNU General Public License for more details.
10  *
11  * You should have received a copy of the GNU General Public License
12  * along with this program; if not, write to the Free Software
13  * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
14  *
15  * Copyright IBM Corp. 2007
16  *
17  * Authors: Hollis Blanchard <hollisb@us.ibm.com>
18  *          Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
19  */
20
21 #include <linux/errno.h>
22 #include <linux/err.h>
23 #include <linux/kvm_host.h>
24 #include <linux/module.h>
25 #include <linux/vmalloc.h>
26 #include <linux/fs.h>
27
28 #include <asm/cputable.h>
29 #include <asm/uaccess.h>
30 #include <asm/kvm_ppc.h>
31 #include "timing.h"
32 #include <asm/cacheflush.h>
33 #include <asm/kvm_44x.h>
34
35 #include "booke.h"
36 #include "44x_tlb.h"
37
38 unsigned long kvmppc_booke_handlers;
39
40 #define VM_STAT(x) offsetof(struct kvm, stat.x), KVM_STAT_VM
41 #define VCPU_STAT(x) offsetof(struct kvm_vcpu, stat.x), KVM_STAT_VCPU
42
43 struct kvm_stats_debugfs_item debugfs_entries[] = {
44         { "mmio",       VCPU_STAT(mmio_exits) },
45         { "dcr",        VCPU_STAT(dcr_exits) },
46         { "sig",        VCPU_STAT(signal_exits) },
47         { "itlb_r",     VCPU_STAT(itlb_real_miss_exits) },
48         { "itlb_v",     VCPU_STAT(itlb_virt_miss_exits) },
49         { "dtlb_r",     VCPU_STAT(dtlb_real_miss_exits) },
50         { "dtlb_v",     VCPU_STAT(dtlb_virt_miss_exits) },
51         { "sysc",       VCPU_STAT(syscall_exits) },
52         { "isi",        VCPU_STAT(isi_exits) },
53         { "dsi",        VCPU_STAT(dsi_exits) },
54         { "inst_emu",   VCPU_STAT(emulated_inst_exits) },
55         { "dec",        VCPU_STAT(dec_exits) },
56         { "ext_intr",   VCPU_STAT(ext_intr_exits) },
57         { "halt_wakeup", VCPU_STAT(halt_wakeup) },
58         { NULL }
59 };
60
61 /* TODO: use vcpu_printf() */
62 void kvmppc_dump_vcpu(struct kvm_vcpu *vcpu)
63 {
64         int i;
65
66         printk("pc:   %08lx msr:  %08lx\n", vcpu->arch.pc, vcpu->arch.msr);
67         printk("lr:   %08lx ctr:  %08lx\n", vcpu->arch.lr, vcpu->arch.ctr);
68         printk("srr0: %08lx srr1: %08lx\n", vcpu->arch.srr0, vcpu->arch.srr1);
69
70         printk("exceptions: %08lx\n", vcpu->arch.pending_exceptions);
71
72         for (i = 0; i < 32; i += 4) {
73                 printk("gpr%02d: %08lx %08lx %08lx %08lx\n", i,
74                        vcpu->arch.gpr[i],
75                        vcpu->arch.gpr[i+1],
76                        vcpu->arch.gpr[i+2],
77                        vcpu->arch.gpr[i+3]);
78         }
79 }
80
81 static void kvmppc_booke_queue_irqprio(struct kvm_vcpu *vcpu,
82                                        unsigned int priority)
83 {
84         set_bit(priority, &vcpu->arch.pending_exceptions);
85 }
86
87 void kvmppc_core_queue_program(struct kvm_vcpu *vcpu)
88 {
89         kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_PROGRAM);
90 }
91
92 void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu)
93 {
94         kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_DECREMENTER);
95 }
96
97 int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu)
98 {
99         return test_bit(BOOKE_IRQPRIO_DECREMENTER, &vcpu->arch.pending_exceptions);
100 }
101
102 void kvmppc_core_queue_external(struct kvm_vcpu *vcpu,
103                                 struct kvm_interrupt *irq)
104 {
105         kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_EXTERNAL);
106 }
107
108 /* Deliver the interrupt of the corresponding priority, if possible. */
109 static int kvmppc_booke_irqprio_deliver(struct kvm_vcpu *vcpu,
110                                         unsigned int priority)
111 {
112         int allowed = 0;
113         ulong msr_mask;
114
115         switch (priority) {
116         case BOOKE_IRQPRIO_PROGRAM:
117         case BOOKE_IRQPRIO_DTLB_MISS:
118         case BOOKE_IRQPRIO_ITLB_MISS:
119         case BOOKE_IRQPRIO_SYSCALL:
120         case BOOKE_IRQPRIO_DATA_STORAGE:
121         case BOOKE_IRQPRIO_INST_STORAGE:
122         case BOOKE_IRQPRIO_FP_UNAVAIL:
123         case BOOKE_IRQPRIO_AP_UNAVAIL:
124         case BOOKE_IRQPRIO_ALIGNMENT:
125                 allowed = 1;
126                 msr_mask = MSR_CE|MSR_ME|MSR_DE;
127                 break;
128         case BOOKE_IRQPRIO_CRITICAL:
129         case BOOKE_IRQPRIO_WATCHDOG:
130                 allowed = vcpu->arch.msr & MSR_CE;
131                 msr_mask = MSR_ME;
132                 break;
133         case BOOKE_IRQPRIO_MACHINE_CHECK:
134                 allowed = vcpu->arch.msr & MSR_ME;
135                 msr_mask = 0;
136                 break;
137         case BOOKE_IRQPRIO_EXTERNAL:
138         case BOOKE_IRQPRIO_DECREMENTER:
139         case BOOKE_IRQPRIO_FIT:
140                 allowed = vcpu->arch.msr & MSR_EE;
141                 msr_mask = MSR_CE|MSR_ME|MSR_DE;
142                 break;
143         case BOOKE_IRQPRIO_DEBUG:
144                 allowed = vcpu->arch.msr & MSR_DE;
145                 msr_mask = MSR_ME;
146                 break;
147         }
148
149         if (allowed) {
150                 vcpu->arch.srr0 = vcpu->arch.pc;
151                 vcpu->arch.srr1 = vcpu->arch.msr;
152                 vcpu->arch.pc = vcpu->arch.ivpr | vcpu->arch.ivor[priority];
153                 kvmppc_set_msr(vcpu, vcpu->arch.msr & msr_mask);
154
155                 clear_bit(priority, &vcpu->arch.pending_exceptions);
156         }
157
158         return allowed;
159 }
160
161 /* Check pending exceptions and deliver one, if possible. */
162 void kvmppc_core_deliver_interrupts(struct kvm_vcpu *vcpu)
163 {
164         unsigned long *pending = &vcpu->arch.pending_exceptions;
165         unsigned int priority;
166
167         priority = __ffs(*pending);
168         while (priority <= BOOKE_MAX_INTERRUPT) {
169                 if (kvmppc_booke_irqprio_deliver(vcpu, priority))
170                         break;
171
172                 priority = find_next_bit(pending,
173                                          BITS_PER_BYTE * sizeof(*pending),
174                                          priority + 1);
175         }
176 }
177
178 /**
179  * kvmppc_handle_exit
180  *
181  * Return value is in the form (errcode<<2 | RESUME_FLAG_HOST | RESUME_FLAG_NV)
182  */
183 int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu,
184                        unsigned int exit_nr)
185 {
186         enum emulation_result er;
187         int r = RESUME_HOST;
188
189         /* update before a new last_exit_type is rewritten */
190         kvmppc_update_timing_stats(vcpu);
191
192         local_irq_enable();
193
194         run->exit_reason = KVM_EXIT_UNKNOWN;
195         run->ready_for_interrupt_injection = 1;
196
197         switch (exit_nr) {
198         case BOOKE_INTERRUPT_MACHINE_CHECK:
199                 printk("MACHINE CHECK: %lx\n", mfspr(SPRN_MCSR));
200                 kvmppc_dump_vcpu(vcpu);
201                 r = RESUME_HOST;
202                 break;
203
204         case BOOKE_INTERRUPT_EXTERNAL:
205                 kvmppc_account_exit(vcpu, EXT_INTR_EXITS);
206                 if (need_resched())
207                         cond_resched();
208                 r = RESUME_GUEST;
209                 break;
210
211         case BOOKE_INTERRUPT_DECREMENTER:
212                 /* Since we switched IVPR back to the host's value, the host
213                  * handled this interrupt the moment we enabled interrupts.
214                  * Now we just offer it a chance to reschedule the guest. */
215                 kvmppc_account_exit(vcpu, DEC_EXITS);
216                 if (need_resched())
217                         cond_resched();
218                 r = RESUME_GUEST;
219                 break;
220
221         case BOOKE_INTERRUPT_PROGRAM:
222                 if (vcpu->arch.msr & MSR_PR) {
223                         /* Program traps generated by user-level software must be handled
224                          * by the guest kernel. */
225                         vcpu->arch.esr = vcpu->arch.fault_esr;
226                         kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_PROGRAM);
227                         r = RESUME_GUEST;
228                         kvmppc_account_exit(vcpu, USR_PR_INST);
229                         break;
230                 }
231
232                 er = kvmppc_emulate_instruction(run, vcpu);
233                 switch (er) {
234                 case EMULATE_DONE:
235                         /* don't overwrite subtypes, just account kvm_stats */
236                         kvmppc_account_exit_stat(vcpu, EMULATED_INST_EXITS);
237                         /* Future optimization: only reload non-volatiles if
238                          * they were actually modified by emulation. */
239                         r = RESUME_GUEST_NV;
240                         break;
241                 case EMULATE_DO_DCR:
242                         run->exit_reason = KVM_EXIT_DCR;
243                         r = RESUME_HOST;
244                         break;
245                 case EMULATE_FAIL:
246                         /* XXX Deliver Program interrupt to guest. */
247                         printk(KERN_CRIT "%s: emulation at %lx failed (%08x)\n",
248                                __func__, vcpu->arch.pc, vcpu->arch.last_inst);
249                         /* For debugging, encode the failing instruction and
250                          * report it to userspace. */
251                         run->hw.hardware_exit_reason = ~0ULL << 32;
252                         run->hw.hardware_exit_reason |= vcpu->arch.last_inst;
253                         r = RESUME_HOST;
254                         break;
255                 default:
256                         BUG();
257                 }
258                 break;
259
260         case BOOKE_INTERRUPT_FP_UNAVAIL:
261                 kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_FP_UNAVAIL);
262                 kvmppc_account_exit(vcpu, FP_UNAVAIL);
263                 r = RESUME_GUEST;
264                 break;
265
266         case BOOKE_INTERRUPT_DATA_STORAGE:
267                 vcpu->arch.dear = vcpu->arch.fault_dear;
268                 vcpu->arch.esr = vcpu->arch.fault_esr;
269                 kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_DATA_STORAGE);
270                 kvmppc_account_exit(vcpu, DSI_EXITS);
271                 r = RESUME_GUEST;
272                 break;
273
274         case BOOKE_INTERRUPT_INST_STORAGE:
275                 vcpu->arch.esr = vcpu->arch.fault_esr;
276                 kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_INST_STORAGE);
277                 kvmppc_account_exit(vcpu, ISI_EXITS);
278                 r = RESUME_GUEST;
279                 break;
280
281         case BOOKE_INTERRUPT_SYSCALL:
282                 kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_SYSCALL);
283                 kvmppc_account_exit(vcpu, SYSCALL_EXITS);
284                 r = RESUME_GUEST;
285                 break;
286
287         /* XXX move to a 440-specific file. */
288         case BOOKE_INTERRUPT_DTLB_MISS: {
289                 struct kvmppc_vcpu_44x *vcpu_44x = to_44x(vcpu);
290                 struct kvmppc_44x_tlbe *gtlbe;
291                 unsigned long eaddr = vcpu->arch.fault_dear;
292                 int gtlb_index;
293                 gfn_t gfn;
294
295                 /* Check the guest TLB. */
296                 gtlb_index = kvmppc_44x_dtlb_index(vcpu, eaddr);
297                 if (gtlb_index < 0) {
298                         /* The guest didn't have a mapping for it. */
299                         kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_DTLB_MISS);
300                         vcpu->arch.dear = vcpu->arch.fault_dear;
301                         vcpu->arch.esr = vcpu->arch.fault_esr;
302                         kvmppc_account_exit(vcpu, DTLB_REAL_MISS_EXITS);
303                         r = RESUME_GUEST;
304                         break;
305                 }
306
307                 gtlbe = &vcpu_44x->guest_tlb[gtlb_index];
308                 vcpu->arch.paddr_accessed = tlb_xlate(gtlbe, eaddr);
309                 gfn = vcpu->arch.paddr_accessed >> PAGE_SHIFT;
310
311                 if (kvm_is_visible_gfn(vcpu->kvm, gfn)) {
312                         /* The guest TLB had a mapping, but the shadow TLB
313                          * didn't, and it is RAM. This could be because:
314                          * a) the entry is mapping the host kernel, or
315                          * b) the guest used a large mapping which we're faking
316                          * Either way, we need to satisfy the fault without
317                          * invoking the guest. */
318                         kvmppc_mmu_map(vcpu, eaddr, vcpu->arch.paddr_accessed, gtlbe->tid,
319                                        gtlbe->word2, get_tlb_bytes(gtlbe), gtlb_index);
320                         kvmppc_account_exit(vcpu, DTLB_VIRT_MISS_EXITS);
321                         r = RESUME_GUEST;
322                 } else {
323                         /* Guest has mapped and accessed a page which is not
324                          * actually RAM. */
325                         r = kvmppc_emulate_mmio(run, vcpu);
326                         kvmppc_account_exit(vcpu, MMIO_EXITS);
327                 }
328
329                 break;
330         }
331
332         /* XXX move to a 440-specific file. */
333         case BOOKE_INTERRUPT_ITLB_MISS: {
334                 struct kvmppc_vcpu_44x *vcpu_44x = to_44x(vcpu);
335                 struct kvmppc_44x_tlbe *gtlbe;
336                 unsigned long eaddr = vcpu->arch.pc;
337                 gpa_t gpaddr;
338                 gfn_t gfn;
339                 int gtlb_index;
340
341                 r = RESUME_GUEST;
342
343                 /* Check the guest TLB. */
344                 gtlb_index = kvmppc_44x_itlb_index(vcpu, eaddr);
345                 if (gtlb_index < 0) {
346                         /* The guest didn't have a mapping for it. */
347                         kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_ITLB_MISS);
348                         kvmppc_account_exit(vcpu, ITLB_REAL_MISS_EXITS);
349                         break;
350                 }
351
352                 kvmppc_account_exit(vcpu, ITLB_VIRT_MISS_EXITS);
353
354                 gtlbe = &vcpu_44x->guest_tlb[gtlb_index];
355                 gpaddr = tlb_xlate(gtlbe, eaddr);
356                 gfn = gpaddr >> PAGE_SHIFT;
357
358                 if (kvm_is_visible_gfn(vcpu->kvm, gfn)) {
359                         /* The guest TLB had a mapping, but the shadow TLB
360                          * didn't. This could be because:
361                          * a) the entry is mapping the host kernel, or
362                          * b) the guest used a large mapping which we're faking
363                          * Either way, we need to satisfy the fault without
364                          * invoking the guest. */
365                         kvmppc_mmu_map(vcpu, eaddr, gpaddr, gtlbe->tid,
366                                        gtlbe->word2, get_tlb_bytes(gtlbe), gtlb_index);
367                 } else {
368                         /* Guest mapped and leaped at non-RAM! */
369                         kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_MACHINE_CHECK);
370                 }
371
372                 break;
373         }
374
375         case BOOKE_INTERRUPT_DEBUG: {
376                 u32 dbsr;
377
378                 vcpu->arch.pc = mfspr(SPRN_CSRR0);
379
380                 /* clear IAC events in DBSR register */
381                 dbsr = mfspr(SPRN_DBSR);
382                 dbsr &= DBSR_IAC1 | DBSR_IAC2 | DBSR_IAC3 | DBSR_IAC4;
383                 mtspr(SPRN_DBSR, dbsr);
384
385                 run->exit_reason = KVM_EXIT_DEBUG;
386                 kvmppc_account_exit(vcpu, DEBUG_EXITS);
387                 r = RESUME_HOST;
388                 break;
389         }
390
391         default:
392                 printk(KERN_EMERG "exit_nr %d\n", exit_nr);
393                 BUG();
394         }
395
396         local_irq_disable();
397
398         kvmppc_core_deliver_interrupts(vcpu);
399
400         if (!(r & RESUME_HOST)) {
401                 /* To avoid clobbering exit_reason, only check for signals if
402                  * we aren't already exiting to userspace for some other
403                  * reason. */
404                 if (signal_pending(current)) {
405                         run->exit_reason = KVM_EXIT_INTR;
406                         r = (-EINTR << 2) | RESUME_HOST | (r & RESUME_FLAG_NV);
407                         kvmppc_account_exit(vcpu, SIGNAL_EXITS);
408                 }
409         }
410
411         return r;
412 }
413
414 /* Initial guest state: 16MB mapping 0 -> 0, PC = 0, MSR = 0, R1 = 16MB */
415 int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu)
416 {
417         vcpu->arch.pc = 0;
418         vcpu->arch.msr = 0;
419         vcpu->arch.gpr[1] = (16<<20) - 8; /* -8 for the callee-save LR slot */
420
421         vcpu->arch.shadow_pid = 1;
422
423         /* Eye-catching number so we know if the guest takes an interrupt
424          * before it's programmed its own IVPR. */
425         vcpu->arch.ivpr = 0x55550000;
426
427         kvmppc_init_timing_stats(vcpu);
428
429         return kvmppc_core_vcpu_setup(vcpu);
430 }
431
432 int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
433 {
434         int i;
435
436         regs->pc = vcpu->arch.pc;
437         regs->cr = vcpu->arch.cr;
438         regs->ctr = vcpu->arch.ctr;
439         regs->lr = vcpu->arch.lr;
440         regs->xer = vcpu->arch.xer;
441         regs->msr = vcpu->arch.msr;
442         regs->srr0 = vcpu->arch.srr0;
443         regs->srr1 = vcpu->arch.srr1;
444         regs->pid = vcpu->arch.pid;
445         regs->sprg0 = vcpu->arch.sprg0;
446         regs->sprg1 = vcpu->arch.sprg1;
447         regs->sprg2 = vcpu->arch.sprg2;
448         regs->sprg3 = vcpu->arch.sprg3;
449         regs->sprg5 = vcpu->arch.sprg4;
450         regs->sprg6 = vcpu->arch.sprg5;
451         regs->sprg7 = vcpu->arch.sprg6;
452
453         for (i = 0; i < ARRAY_SIZE(regs->gpr); i++)
454                 regs->gpr[i] = vcpu->arch.gpr[i];
455
456         return 0;
457 }
458
459 int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
460 {
461         int i;
462
463         vcpu->arch.pc = regs->pc;
464         vcpu->arch.cr = regs->cr;
465         vcpu->arch.ctr = regs->ctr;
466         vcpu->arch.lr = regs->lr;
467         vcpu->arch.xer = regs->xer;
468         kvmppc_set_msr(vcpu, regs->msr);
469         vcpu->arch.srr0 = regs->srr0;
470         vcpu->arch.srr1 = regs->srr1;
471         vcpu->arch.sprg0 = regs->sprg0;
472         vcpu->arch.sprg1 = regs->sprg1;
473         vcpu->arch.sprg2 = regs->sprg2;
474         vcpu->arch.sprg3 = regs->sprg3;
475         vcpu->arch.sprg5 = regs->sprg4;
476         vcpu->arch.sprg6 = regs->sprg5;
477         vcpu->arch.sprg7 = regs->sprg6;
478
479         for (i = 0; i < ARRAY_SIZE(vcpu->arch.gpr); i++)
480                 vcpu->arch.gpr[i] = regs->gpr[i];
481
482         return 0;
483 }
484
485 int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
486                                   struct kvm_sregs *sregs)
487 {
488         return -ENOTSUPP;
489 }
490
491 int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
492                                   struct kvm_sregs *sregs)
493 {
494         return -ENOTSUPP;
495 }
496
497 int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
498 {
499         return -ENOTSUPP;
500 }
501
502 int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
503 {
504         return -ENOTSUPP;
505 }
506
507 int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
508                                   struct kvm_translation *tr)
509 {
510         return kvmppc_core_vcpu_translate(vcpu, tr);
511 }
512
513 int kvmppc_booke_init(void)
514 {
515         unsigned long ivor[16];
516         unsigned long max_ivor = 0;
517         int i;
518
519         /* We install our own exception handlers by hijacking IVPR. IVPR must
520          * be 16-bit aligned, so we need a 64KB allocation. */
521         kvmppc_booke_handlers = __get_free_pages(GFP_KERNEL | __GFP_ZERO,
522                                                  VCPU_SIZE_ORDER);
523         if (!kvmppc_booke_handlers)
524                 return -ENOMEM;
525
526         /* XXX make sure our handlers are smaller than Linux's */
527
528         /* Copy our interrupt handlers to match host IVORs. That way we don't
529          * have to swap the IVORs on every guest/host transition. */
530         ivor[0] = mfspr(SPRN_IVOR0);
531         ivor[1] = mfspr(SPRN_IVOR1);
532         ivor[2] = mfspr(SPRN_IVOR2);
533         ivor[3] = mfspr(SPRN_IVOR3);
534         ivor[4] = mfspr(SPRN_IVOR4);
535         ivor[5] = mfspr(SPRN_IVOR5);
536         ivor[6] = mfspr(SPRN_IVOR6);
537         ivor[7] = mfspr(SPRN_IVOR7);
538         ivor[8] = mfspr(SPRN_IVOR8);
539         ivor[9] = mfspr(SPRN_IVOR9);
540         ivor[10] = mfspr(SPRN_IVOR10);
541         ivor[11] = mfspr(SPRN_IVOR11);
542         ivor[12] = mfspr(SPRN_IVOR12);
543         ivor[13] = mfspr(SPRN_IVOR13);
544         ivor[14] = mfspr(SPRN_IVOR14);
545         ivor[15] = mfspr(SPRN_IVOR15);
546
547         for (i = 0; i < 16; i++) {
548                 if (ivor[i] > max_ivor)
549                         max_ivor = ivor[i];
550
551                 memcpy((void *)kvmppc_booke_handlers + ivor[i],
552                        kvmppc_handlers_start + i * kvmppc_handler_len,
553                        kvmppc_handler_len);
554         }
555         flush_icache_range(kvmppc_booke_handlers,
556                            kvmppc_booke_handlers + max_ivor + kvmppc_handler_len);
557
558         return 0;
559 }
560
561 void __exit kvmppc_booke_exit(void)
562 {
563         free_pages(kvmppc_booke_handlers, VCPU_SIZE_ORDER);
564         kvm_exit();
565 }