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