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