arch/powerpc/kvm/book3s.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Copyright (C) 2009. SUSE Linux Products GmbH. All rights reserved.
   4  *
   5  * Authors:
   6  *    Alexander Graf <agraf@suse.de>
   7  *    Kevin Wolf <mail@kevin-wolf.de>
   8  *
   9  * Description:
  10  * This file is derived from arch/powerpc/kvm/44x.c,
  11  * by Hollis Blanchard <hollisb@us.ibm.com>.
  12  */
  13
  14 #include <linux/kvm_host.h>
  15 #include <linux/err.h>
  16 #include <linux/export.h>
  17 #include <linux/slab.h>
  18 #include <linux/module.h>
  19 #include <linux/miscdevice.h>
  20 #include <linux/gfp.h>
  21 #include <linux/sched.h>
  22 #include <linux/vmalloc.h>
  23 #include <linux/highmem.h>
  24
  25 #include <asm/reg.h>
  26 #include <asm/cputable.h>
  27 #include <asm/cacheflush.h>
  28 #include <linux/uaccess.h>
  29 #include <asm/io.h>
  30 #include <asm/kvm_ppc.h>
  31 #include <asm/kvm_book3s.h>
  32 #include <asm/mmu_context.h>
  33 #include <asm/page.h>
  34 #include <asm/xive.h>
  35
  36 #include "book3s.h"
  37 #include "trace.h"
  38
  39 /* #define EXIT_DEBUG */
  40
  41 const struct _kvm_stats_desc kvm_vm_stats_desc[] = {
  42         KVM_GENERIC_VM_STATS(),
  43         STATS_DESC_ICOUNTER(VM, num_2M_pages),
  44         STATS_DESC_ICOUNTER(VM, num_1G_pages)
  45 };
  46 static_assert(ARRAY_SIZE(kvm_vm_stats_desc) ==
  47                 sizeof(struct kvm_vm_stat) / sizeof(u64));
  48
  49 const struct kvm_stats_header kvm_vm_stats_header = {
  50         .name_size = KVM_STATS_NAME_SIZE,
  51         .num_desc = ARRAY_SIZE(kvm_vm_stats_desc),
  52         .id_offset = sizeof(struct kvm_stats_header),
  53         .desc_offset = sizeof(struct kvm_stats_header) + KVM_STATS_NAME_SIZE,
  54         .data_offset = sizeof(struct kvm_stats_header) + KVM_STATS_NAME_SIZE +
  55                        sizeof(kvm_vm_stats_desc),
  56 };
  57
  58 const struct _kvm_stats_desc kvm_vcpu_stats_desc[] = {
  59         KVM_GENERIC_VCPU_STATS(),
  60         STATS_DESC_COUNTER(VCPU, sum_exits),
  61         STATS_DESC_COUNTER(VCPU, mmio_exits),
  62         STATS_DESC_COUNTER(VCPU, signal_exits),
  63         STATS_DESC_COUNTER(VCPU, light_exits),
  64         STATS_DESC_COUNTER(VCPU, itlb_real_miss_exits),
  65         STATS_DESC_COUNTER(VCPU, itlb_virt_miss_exits),
  66         STATS_DESC_COUNTER(VCPU, dtlb_real_miss_exits),
  67         STATS_DESC_COUNTER(VCPU, dtlb_virt_miss_exits),
  68         STATS_DESC_COUNTER(VCPU, syscall_exits),
  69         STATS_DESC_COUNTER(VCPU, isi_exits),
  70         STATS_DESC_COUNTER(VCPU, dsi_exits),
  71         STATS_DESC_COUNTER(VCPU, emulated_inst_exits),
  72         STATS_DESC_COUNTER(VCPU, dec_exits),
  73         STATS_DESC_COUNTER(VCPU, ext_intr_exits),
  74         STATS_DESC_TIME_NSEC(VCPU, halt_wait_ns),
  75         STATS_DESC_COUNTER(VCPU, halt_successful_wait),
  76         STATS_DESC_COUNTER(VCPU, dbell_exits),
  77         STATS_DESC_COUNTER(VCPU, gdbell_exits),
  78         STATS_DESC_COUNTER(VCPU, ld),
  79         STATS_DESC_COUNTER(VCPU, st),
  80         STATS_DESC_COUNTER(VCPU, pf_storage),
  81         STATS_DESC_COUNTER(VCPU, pf_instruc),
  82         STATS_DESC_COUNTER(VCPU, sp_storage),
  83         STATS_DESC_COUNTER(VCPU, sp_instruc),
  84         STATS_DESC_COUNTER(VCPU, queue_intr),
  85         STATS_DESC_COUNTER(VCPU, ld_slow),
  86         STATS_DESC_COUNTER(VCPU, st_slow),
  87         STATS_DESC_COUNTER(VCPU, pthru_all),
  88         STATS_DESC_COUNTER(VCPU, pthru_host),
  89         STATS_DESC_COUNTER(VCPU, pthru_bad_aff)
  90 };
  91 static_assert(ARRAY_SIZE(kvm_vcpu_stats_desc) ==
  92                 sizeof(struct kvm_vcpu_stat) / sizeof(u64));
  93
  94 const struct kvm_stats_header kvm_vcpu_stats_header = {
  95         .name_size = KVM_STATS_NAME_SIZE,
  96         .num_desc = ARRAY_SIZE(kvm_vcpu_stats_desc),
  97         .id_offset = sizeof(struct kvm_stats_header),
  98         .desc_offset = sizeof(struct kvm_stats_header) + KVM_STATS_NAME_SIZE,
  99         .data_offset = sizeof(struct kvm_stats_header) + KVM_STATS_NAME_SIZE +
 100                        sizeof(kvm_vcpu_stats_desc),
 101 };
 102
 103 static inline void kvmppc_update_int_pending(struct kvm_vcpu *vcpu,
 104                         unsigned long pending_now, unsigned long old_pending)
 105 {
 106         if (is_kvmppc_hv_enabled(vcpu->kvm))
 107                 return;
 108         if (pending_now)
 109                 kvmppc_set_int_pending(vcpu, 1);
 110         else if (old_pending)
 111                 kvmppc_set_int_pending(vcpu, 0);
 112 }
 113
 114 static inline bool kvmppc_critical_section(struct kvm_vcpu *vcpu)
 115 {
 116         ulong crit_raw;
 117         ulong crit_r1;
 118         bool crit;
 119
 120         if (is_kvmppc_hv_enabled(vcpu->kvm))
 121                 return false;
 122
 123         crit_raw = kvmppc_get_critical(vcpu);
 124         crit_r1 = kvmppc_get_gpr(vcpu, 1);
 125
 126         /* Truncate crit indicators in 32 bit mode */
 127         if (!(kvmppc_get_msr(vcpu) & MSR_SF)) {
 128                 crit_raw &= 0xffffffff;
 129                 crit_r1 &= 0xffffffff;
 130         }
 131
 132         /* Critical section when crit == r1 */
 133         crit = (crit_raw == crit_r1);
 134         /* ... and we're in supervisor mode */
 135         crit = crit && !(kvmppc_get_msr(vcpu) & MSR_PR);
 136
 137         return crit;
 138 }
 139
 140 void kvmppc_inject_interrupt(struct kvm_vcpu *vcpu, int vec, u64 flags)
 141 {
 142         vcpu->kvm->arch.kvm_ops->inject_interrupt(vcpu, vec, flags);
 143 }
 144
 145 static int kvmppc_book3s_vec2irqprio(unsigned int vec)
 146 {
 147         unsigned int prio;
 148
 149         switch (vec) {
 150         case 0x100: prio = BOOK3S_IRQPRIO_SYSTEM_RESET;         break;
 151         case 0x200: prio = BOOK3S_IRQPRIO_MACHINE_CHECK;        break;
 152         case 0x300: prio = BOOK3S_IRQPRIO_DATA_STORAGE;         break;
 153         case 0x380: prio = BOOK3S_IRQPRIO_DATA_SEGMENT;         break;
 154         case 0x400: prio = BOOK3S_IRQPRIO_INST_STORAGE;         break;
 155         case 0x480: prio = BOOK3S_IRQPRIO_INST_SEGMENT;         break;
 156         case 0x500: prio = BOOK3S_IRQPRIO_EXTERNAL;             break;
 157         case 0x600: prio = BOOK3S_IRQPRIO_ALIGNMENT;            break;
 158         case 0x700: prio = BOOK3S_IRQPRIO_PROGRAM;              break;
 159         case 0x800: prio = BOOK3S_IRQPRIO_FP_UNAVAIL;           break;
 160         case 0x900: prio = BOOK3S_IRQPRIO_DECREMENTER;          break;
 161         case 0xc00: prio = BOOK3S_IRQPRIO_SYSCALL;              break;
 162         case 0xd00: prio = BOOK3S_IRQPRIO_DEBUG;                break;
 163         case 0xf20: prio = BOOK3S_IRQPRIO_ALTIVEC;              break;
 164         case 0xf40: prio = BOOK3S_IRQPRIO_VSX;                  break;
 165         case 0xf60: prio = BOOK3S_IRQPRIO_FAC_UNAVAIL;          break;
 166         default:    prio = BOOK3S_IRQPRIO_MAX;                  break;
 167         }
 168
 169         return prio;
 170 }
 171
 172 void kvmppc_book3s_dequeue_irqprio(struct kvm_vcpu *vcpu,
 173                                           unsigned int vec)
 174 {
 175         unsigned long old_pending = vcpu->arch.pending_exceptions;
 176
 177         clear_bit(kvmppc_book3s_vec2irqprio(vec),
 178                   &vcpu->arch.pending_exceptions);
 179
 180         kvmppc_update_int_pending(vcpu, vcpu->arch.pending_exceptions,
 181                                   old_pending);
 182 }
 183
 184 void kvmppc_book3s_queue_irqprio(struct kvm_vcpu *vcpu, unsigned int vec)
 185 {
 186         vcpu->stat.queue_intr++;
 187
 188         set_bit(kvmppc_book3s_vec2irqprio(vec),
 189                 &vcpu->arch.pending_exceptions);
 190 #ifdef EXIT_DEBUG
 191         printk(KERN_INFO "Queueing interrupt %x\n", vec);
 192 #endif
 193 }
 194 EXPORT_SYMBOL_GPL(kvmppc_book3s_queue_irqprio);
 195
 196 void kvmppc_core_queue_machine_check(struct kvm_vcpu *vcpu, ulong flags)
 197 {
 198         /* might as well deliver this straight away */
 199         kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_MACHINE_CHECK, flags);
 200 }
 201 EXPORT_SYMBOL_GPL(kvmppc_core_queue_machine_check);
 202
 203 void kvmppc_core_queue_syscall(struct kvm_vcpu *vcpu)
 204 {
 205         kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_SYSCALL, 0);
 206 }
 207 EXPORT_SYMBOL(kvmppc_core_queue_syscall);
 208
 209 void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong flags)
 210 {
 211         /* might as well deliver this straight away */
 212         kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_PROGRAM, flags);
 213 }
 214 EXPORT_SYMBOL_GPL(kvmppc_core_queue_program);
 215
 216 void kvmppc_core_queue_fpunavail(struct kvm_vcpu *vcpu)
 217 {
 218         /* might as well deliver this straight away */
 219         kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_FP_UNAVAIL, 0);
 220 }
 221
 222 void kvmppc_core_queue_vec_unavail(struct kvm_vcpu *vcpu)
 223 {
 224         /* might as well deliver this straight away */
 225         kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_ALTIVEC, 0);
 226 }
 227
 228 void kvmppc_core_queue_vsx_unavail(struct kvm_vcpu *vcpu)
 229 {
 230         /* might as well deliver this straight away */
 231         kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_VSX, 0);
 232 }
 233
 234 void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu)
 235 {
 236         kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_DECREMENTER);
 237 }
 238 EXPORT_SYMBOL_GPL(kvmppc_core_queue_dec);
 239
 240 int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu)
 241 {
 242         return test_bit(BOOK3S_IRQPRIO_DECREMENTER, &vcpu->arch.pending_exceptions);
 243 }
 244 EXPORT_SYMBOL_GPL(kvmppc_core_pending_dec);
 245
 246 void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu)
 247 {
 248         kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_DECREMENTER);
 249 }
 250 EXPORT_SYMBOL_GPL(kvmppc_core_dequeue_dec);
 251
 252 void kvmppc_core_queue_external(struct kvm_vcpu *vcpu,
 253                                 struct kvm_interrupt *irq)
 254 {
 255         /*
 256          * This case (KVM_INTERRUPT_SET) should never actually arise for
 257          * a pseries guest (because pseries guests expect their interrupt
 258          * controllers to continue asserting an external interrupt request
 259          * until it is acknowledged at the interrupt controller), but is
 260          * included to avoid ABI breakage and potentially for other
 261          * sorts of guest.
 262          *
 263          * There is a subtlety here: HV KVM does not test the
 264          * external_oneshot flag in the code that synthesizes
 265          * external interrupts for the guest just before entering
 266          * the guest.  That is OK even if userspace did do a
 267          * KVM_INTERRUPT_SET on a pseries guest vcpu, because the
 268          * caller (kvm_vcpu_ioctl_interrupt) does a kvm_vcpu_kick()
 269          * which ends up doing a smp_send_reschedule(), which will
 270          * pull the guest all the way out to the host, meaning that
 271          * we will call kvmppc_core_prepare_to_enter() before entering
 272          * the guest again, and that will handle the external_oneshot
 273          * flag correctly.
 274          */
 275         if (irq->irq == KVM_INTERRUPT_SET)
 276                 vcpu->arch.external_oneshot = 1;
 277
 278         kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_EXTERNAL);
 279 }
 280
 281 void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu)
 282 {
 283         kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_EXTERNAL);
 284 }
 285
 286 void kvmppc_core_queue_data_storage(struct kvm_vcpu *vcpu, ulong dar,
 287                                     ulong flags)
 288 {
 289         kvmppc_set_dar(vcpu, dar);
 290         kvmppc_set_dsisr(vcpu, flags);
 291         kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_DATA_STORAGE, 0);
 292 }
 293 EXPORT_SYMBOL_GPL(kvmppc_core_queue_data_storage);
 294
 295 void kvmppc_core_queue_inst_storage(struct kvm_vcpu *vcpu, ulong flags)
 296 {
 297         kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_INST_STORAGE, flags);
 298 }
 299 EXPORT_SYMBOL_GPL(kvmppc_core_queue_inst_storage);
 300
 301 static int kvmppc_book3s_irqprio_deliver(struct kvm_vcpu *vcpu,
 302                                          unsigned int priority)
 303 {
 304         int deliver = 1;
 305         int vec = 0;
 306         bool crit = kvmppc_critical_section(vcpu);
 307
 308         switch (priority) {
 309         case BOOK3S_IRQPRIO_DECREMENTER:
 310                 deliver = (kvmppc_get_msr(vcpu) & MSR_EE) && !crit;
 311                 vec = BOOK3S_INTERRUPT_DECREMENTER;
 312                 break;
 313         case BOOK3S_IRQPRIO_EXTERNAL:
 314                 deliver = (kvmppc_get_msr(vcpu) & MSR_EE) && !crit;
 315                 vec = BOOK3S_INTERRUPT_EXTERNAL;
 316                 break;
 317         case BOOK3S_IRQPRIO_SYSTEM_RESET:
 318                 vec = BOOK3S_INTERRUPT_SYSTEM_RESET;
 319                 break;
 320         case BOOK3S_IRQPRIO_MACHINE_CHECK:
 321                 vec = BOOK3S_INTERRUPT_MACHINE_CHECK;
 322                 break;
 323         case BOOK3S_IRQPRIO_DATA_STORAGE:
 324                 vec = BOOK3S_INTERRUPT_DATA_STORAGE;
 325                 break;
 326         case BOOK3S_IRQPRIO_INST_STORAGE:
 327                 vec = BOOK3S_INTERRUPT_INST_STORAGE;
 328                 break;
 329         case BOOK3S_IRQPRIO_DATA_SEGMENT:
 330                 vec = BOOK3S_INTERRUPT_DATA_SEGMENT;
 331                 break;
 332         case BOOK3S_IRQPRIO_INST_SEGMENT:
 333                 vec = BOOK3S_INTERRUPT_INST_SEGMENT;
 334                 break;
 335         case BOOK3S_IRQPRIO_ALIGNMENT:
 336                 vec = BOOK3S_INTERRUPT_ALIGNMENT;
 337                 break;
 338         case BOOK3S_IRQPRIO_PROGRAM:
 339                 vec = BOOK3S_INTERRUPT_PROGRAM;
 340                 break;
 341         case BOOK3S_IRQPRIO_VSX:
 342                 vec = BOOK3S_INTERRUPT_VSX;
 343                 break;
 344         case BOOK3S_IRQPRIO_ALTIVEC:
 345                 vec = BOOK3S_INTERRUPT_ALTIVEC;
 346                 break;
 347         case BOOK3S_IRQPRIO_FP_UNAVAIL:
 348                 vec = BOOK3S_INTERRUPT_FP_UNAVAIL;
 349                 break;
 350         case BOOK3S_IRQPRIO_SYSCALL:
 351                 vec = BOOK3S_INTERRUPT_SYSCALL;
 352                 break;
 353         case BOOK3S_IRQPRIO_DEBUG:
 354                 vec = BOOK3S_INTERRUPT_TRACE;
 355                 break;
 356         case BOOK3S_IRQPRIO_PERFORMANCE_MONITOR:
 357                 vec = BOOK3S_INTERRUPT_PERFMON;
 358                 break;
 359         case BOOK3S_IRQPRIO_FAC_UNAVAIL:
 360                 vec = BOOK3S_INTERRUPT_FAC_UNAVAIL;
 361                 break;
 362         default:
 363                 deliver = 0;
 364                 printk(KERN_ERR "KVM: Unknown interrupt: 0x%x\n", priority);
 365                 break;
 366         }
 367
 368 #if 0
 369         printk(KERN_INFO "Deliver interrupt 0x%x? %x\n", vec, deliver);
 370 #endif
 371
 372         if (deliver)
 373                 kvmppc_inject_interrupt(vcpu, vec, 0);
 374
 375         return deliver;
 376 }
 377
 378 /*
 379  * This function determines if an irqprio should be cleared once issued.
 380  */
 381 static bool clear_irqprio(struct kvm_vcpu *vcpu, unsigned int priority)
 382 {
 383         switch (priority) {
 384                 case BOOK3S_IRQPRIO_DECREMENTER:
 385                         /* DEC interrupts get cleared by mtdec */
 386                         return false;
 387                 case BOOK3S_IRQPRIO_EXTERNAL:
 388                         /*
 389                          * External interrupts get cleared by userspace
 390                          * except when set by the KVM_INTERRUPT ioctl with
 391                          * KVM_INTERRUPT_SET (not KVM_INTERRUPT_SET_LEVEL).
 392                          */
 393                         if (vcpu->arch.external_oneshot) {
 394                                 vcpu->arch.external_oneshot = 0;
 395                                 return true;
 396                         }
 397                         return false;
 398         }
 399
 400         return true;
 401 }
 402
 403 int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu)
 404 {
 405         unsigned long *pending = &vcpu->arch.pending_exceptions;
 406         unsigned long old_pending = vcpu->arch.pending_exceptions;
 407         unsigned int priority;
 408
 409 #ifdef EXIT_DEBUG
 410         if (vcpu->arch.pending_exceptions)
 411                 printk(KERN_EMERG "KVM: Check pending: %lx\n", vcpu->arch.pending_exceptions);
 412 #endif
 413         priority = __ffs(*pending);
 414         while (priority < BOOK3S_IRQPRIO_MAX) {
 415                 if (kvmppc_book3s_irqprio_deliver(vcpu, priority) &&
 416                     clear_irqprio(vcpu, priority)) {
 417                         clear_bit(priority, &vcpu->arch.pending_exceptions);
 418                         break;
 419                 }
 420
 421                 priority = find_next_bit(pending,
 422                                          BITS_PER_BYTE * sizeof(*pending),
 423                                          priority + 1);
 424         }
 425
 426         /* Tell the guest about our interrupt status */
 427         kvmppc_update_int_pending(vcpu, *pending, old_pending);
 428
 429         return 0;
 430 }
 431 EXPORT_SYMBOL_GPL(kvmppc_core_prepare_to_enter);
 432
 433 kvm_pfn_t kvmppc_gpa_to_pfn(struct kvm_vcpu *vcpu, gpa_t gpa, bool writing,
 434                         bool *writable)
 435 {
 436         ulong mp_pa = vcpu->arch.magic_page_pa & KVM_PAM;
 437         gfn_t gfn = gpa >> PAGE_SHIFT;
 438
 439         if (!(kvmppc_get_msr(vcpu) & MSR_SF))
 440                 mp_pa = (uint32_t)mp_pa;
 441
 442         /* Magic page override */
 443         gpa &= ~0xFFFULL;
 444         if (unlikely(mp_pa) && unlikely((gpa & KVM_PAM) == mp_pa)) {
 445                 ulong shared_page = ((ulong)vcpu->arch.shared) & PAGE_MASK;
 446                 kvm_pfn_t pfn;
 447
 448                 pfn = (kvm_pfn_t)virt_to_phys((void*)shared_page) >> PAGE_SHIFT;
 449                 get_page(pfn_to_page(pfn));
 450                 if (writable)
 451                         *writable = true;
 452                 return pfn;
 453         }
 454
 455         return gfn_to_pfn_prot(vcpu->kvm, gfn, writing, writable);
 456 }
 457 EXPORT_SYMBOL_GPL(kvmppc_gpa_to_pfn);
 458
 459 int kvmppc_xlate(struct kvm_vcpu *vcpu, ulong eaddr, enum xlate_instdata xlid,
 460                  enum xlate_readwrite xlrw, struct kvmppc_pte *pte)
 461 {
 462         bool data = (xlid == XLATE_DATA);
 463         bool iswrite = (xlrw == XLATE_WRITE);
 464         int relocated = (kvmppc_get_msr(vcpu) & (data ? MSR_DR : MSR_IR));
 465         int r;
 466
 467         if (relocated) {
 468                 r = vcpu->arch.mmu.xlate(vcpu, eaddr, pte, data, iswrite);
 469         } else {
 470                 pte->eaddr = eaddr;
 471                 pte->raddr = eaddr & KVM_PAM;
 472                 pte->vpage = VSID_REAL | eaddr >> 12;
 473                 pte->may_read = true;
 474                 pte->may_write = true;
 475                 pte->may_execute = true;
 476                 r = 0;
 477
 478                 if ((kvmppc_get_msr(vcpu) & (MSR_IR | MSR_DR)) == MSR_DR &&
 479                     !data) {
 480                         if ((vcpu->arch.hflags & BOOK3S_HFLAG_SPLIT_HACK) &&
 481                             ((eaddr & SPLIT_HACK_MASK) == SPLIT_HACK_OFFS))
 482                         pte->raddr &= ~SPLIT_HACK_MASK;
 483                 }
 484         }
 485
 486         return r;
 487 }
 488
 489 int kvmppc_load_last_inst(struct kvm_vcpu *vcpu,
 490                 enum instruction_fetch_type type, u32 *inst)
 491 {
 492         ulong pc = kvmppc_get_pc(vcpu);
 493         int r;
 494
 495         if (type == INST_SC)
 496                 pc -= 4;
 497
 498         r = kvmppc_ld(vcpu, &pc, sizeof(u32), inst, false);
 499         if (r == EMULATE_DONE)
 500                 return r;
 501         else
 502                 return EMULATE_AGAIN;
 503 }
 504 EXPORT_SYMBOL_GPL(kvmppc_load_last_inst);
 505
 506 int kvmppc_subarch_vcpu_init(struct kvm_vcpu *vcpu)
 507 {
 508         return 0;
 509 }
 510
 511 void kvmppc_subarch_vcpu_uninit(struct kvm_vcpu *vcpu)
 512 {
 513 }
 514
 515 int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
 516                                   struct kvm_sregs *sregs)
 517 {
 518         int ret;
 519
 520         vcpu_load(vcpu);
 521         ret = vcpu->kvm->arch.kvm_ops->get_sregs(vcpu, sregs);
 522         vcpu_put(vcpu);
 523
 524         return ret;
 525 }
 526
 527 int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
 528                                   struct kvm_sregs *sregs)
 529 {
 530         int ret;
 531
 532         vcpu_load(vcpu);
 533         ret = vcpu->kvm->arch.kvm_ops->set_sregs(vcpu, sregs);
 534         vcpu_put(vcpu);
 535
 536         return ret;
 537 }
 538
 539 int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
 540 {
 541         int i;
 542
 543         regs->pc = kvmppc_get_pc(vcpu);
 544         regs->cr = kvmppc_get_cr(vcpu);
 545         regs->ctr = kvmppc_get_ctr(vcpu);
 546         regs->lr = kvmppc_get_lr(vcpu);
 547         regs->xer = kvmppc_get_xer(vcpu);
 548         regs->msr = kvmppc_get_msr(vcpu);
 549         regs->srr0 = kvmppc_get_srr0(vcpu);
 550         regs->srr1 = kvmppc_get_srr1(vcpu);
 551         regs->pid = vcpu->arch.pid;
 552         regs->sprg0 = kvmppc_get_sprg0(vcpu);
 553         regs->sprg1 = kvmppc_get_sprg1(vcpu);
 554         regs->sprg2 = kvmppc_get_sprg2(vcpu);
 555         regs->sprg3 = kvmppc_get_sprg3(vcpu);
 556         regs->sprg4 = kvmppc_get_sprg4(vcpu);
 557         regs->sprg5 = kvmppc_get_sprg5(vcpu);
 558         regs->sprg6 = kvmppc_get_sprg6(vcpu);
 559         regs->sprg7 = kvmppc_get_sprg7(vcpu);
 560
 561         for (i = 0; i < ARRAY_SIZE(regs->gpr); i++)
 562                 regs->gpr[i] = kvmppc_get_gpr(vcpu, i);
 563
 564         return 0;
 565 }
 566
 567 int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
 568 {
 569         int i;
 570
 571         kvmppc_set_pc(vcpu, regs->pc);
 572         kvmppc_set_cr(vcpu, regs->cr);
 573         kvmppc_set_ctr(vcpu, regs->ctr);
 574         kvmppc_set_lr(vcpu, regs->lr);
 575         kvmppc_set_xer(vcpu, regs->xer);
 576         kvmppc_set_msr(vcpu, regs->msr);
 577         kvmppc_set_srr0(vcpu, regs->srr0);
 578         kvmppc_set_srr1(vcpu, regs->srr1);
 579         kvmppc_set_sprg0(vcpu, regs->sprg0);
 580         kvmppc_set_sprg1(vcpu, regs->sprg1);
 581         kvmppc_set_sprg2(vcpu, regs->sprg2);
 582         kvmppc_set_sprg3(vcpu, regs->sprg3);
 583         kvmppc_set_sprg4(vcpu, regs->sprg4);
 584         kvmppc_set_sprg5(vcpu, regs->sprg5);
 585         kvmppc_set_sprg6(vcpu, regs->sprg6);
 586         kvmppc_set_sprg7(vcpu, regs->sprg7);
 587
 588         for (i = 0; i < ARRAY_SIZE(regs->gpr); i++)
 589                 kvmppc_set_gpr(vcpu, i, regs->gpr[i]);
 590
 591         return 0;
 592 }
 593
 594 int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
 595 {
 596         return -EOPNOTSUPP;
 597 }
 598
 599 int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
 600 {
 601         return -EOPNOTSUPP;
 602 }
 603
 604 int kvmppc_get_one_reg(struct kvm_vcpu *vcpu, u64 id,
 605                         union kvmppc_one_reg *val)
 606 {
 607         int r = 0;
 608         long int i;
 609
 610         r = vcpu->kvm->arch.kvm_ops->get_one_reg(vcpu, id, val);
 611         if (r == -EINVAL) {
 612                 r = 0;
 613                 switch (id) {
 614                 case KVM_REG_PPC_DAR:
 615                         *val = get_reg_val(id, kvmppc_get_dar(vcpu));
 616                         break;
 617                 case KVM_REG_PPC_DSISR:
 618                         *val = get_reg_val(id, kvmppc_get_dsisr(vcpu));
 619                         break;
 620                 case KVM_REG_PPC_FPR0 ... KVM_REG_PPC_FPR31:
 621                         i = id - KVM_REG_PPC_FPR0;
 622                         *val = get_reg_val(id, VCPU_FPR(vcpu, i));
 623                         break;
 624                 case KVM_REG_PPC_FPSCR:
 625                         *val = get_reg_val(id, vcpu->arch.fp.fpscr);
 626                         break;
 627 #ifdef CONFIG_VSX
 628                 case KVM_REG_PPC_VSR0 ... KVM_REG_PPC_VSR31:
 629                         if (cpu_has_feature(CPU_FTR_VSX)) {
 630                                 i = id - KVM_REG_PPC_VSR0;
 631                                 val->vsxval[0] = vcpu->arch.fp.fpr[i][0];
 632                                 val->vsxval[1] = vcpu->arch.fp.fpr[i][1];
 633                         } else {
 634                                 r = -ENXIO;
 635                         }
 636                         break;
 637 #endif /* CONFIG_VSX */
 638                 case KVM_REG_PPC_DEBUG_INST:
 639                         *val = get_reg_val(id, INS_TW);
 640                         break;
 641 #ifdef CONFIG_KVM_XICS
 642                 case KVM_REG_PPC_ICP_STATE:
 643                         if (!vcpu->arch.icp && !vcpu->arch.xive_vcpu) {
 644                                 r = -ENXIO;
 645                                 break;
 646                         }
 647                         if (xics_on_xive())
 648                                 *val = get_reg_val(id, kvmppc_xive_get_icp(vcpu));
 649                         else
 650                                 *val = get_reg_val(id, kvmppc_xics_get_icp(vcpu));
 651                         break;
 652 #endif /* CONFIG_KVM_XICS */
 653 #ifdef CONFIG_KVM_XIVE
 654                 case KVM_REG_PPC_VP_STATE:
 655                         if (!vcpu->arch.xive_vcpu) {
 656                                 r = -ENXIO;
 657                                 break;
 658                         }
 659                         if (xive_enabled())
 660                                 r = kvmppc_xive_native_get_vp(vcpu, val);
 661                         else
 662                                 r = -ENXIO;
 663                         break;
 664 #endif /* CONFIG_KVM_XIVE */
 665                 case KVM_REG_PPC_FSCR:
 666                         *val = get_reg_val(id, vcpu->arch.fscr);
 667                         break;
 668                 case KVM_REG_PPC_TAR:
 669                         *val = get_reg_val(id, vcpu->arch.tar);
 670                         break;
 671                 case KVM_REG_PPC_EBBHR:
 672                         *val = get_reg_val(id, vcpu->arch.ebbhr);
 673                         break;
 674                 case KVM_REG_PPC_EBBRR:
 675                         *val = get_reg_val(id, vcpu->arch.ebbrr);
 676                         break;
 677                 case KVM_REG_PPC_BESCR:
 678                         *val = get_reg_val(id, vcpu->arch.bescr);
 679                         break;
 680                 case KVM_REG_PPC_IC:
 681                         *val = get_reg_val(id, vcpu->arch.ic);
 682                         break;
 683                 default:
 684                         r = -EINVAL;
 685                         break;
 686                 }
 687         }
 688
 689         return r;
 690 }
 691
 692 int kvmppc_set_one_reg(struct kvm_vcpu *vcpu, u64 id,
 693                         union kvmppc_one_reg *val)
 694 {
 695         int r = 0;
 696         long int i;
 697
 698         r = vcpu->kvm->arch.kvm_ops->set_one_reg(vcpu, id, val);
 699         if (r == -EINVAL) {
 700                 r = 0;
 701                 switch (id) {
 702                 case KVM_REG_PPC_DAR:
 703                         kvmppc_set_dar(vcpu, set_reg_val(id, *val));
 704                         break;
 705                 case KVM_REG_PPC_DSISR:
 706                         kvmppc_set_dsisr(vcpu, set_reg_val(id, *val));
 707                         break;
 708                 case KVM_REG_PPC_FPR0 ... KVM_REG_PPC_FPR31:
 709                         i = id - KVM_REG_PPC_FPR0;
 710                         VCPU_FPR(vcpu, i) = set_reg_val(id, *val);
 711                         break;
 712                 case KVM_REG_PPC_FPSCR:
 713                         vcpu->arch.fp.fpscr = set_reg_val(id, *val);
 714                         break;
 715 #ifdef CONFIG_VSX
 716                 case KVM_REG_PPC_VSR0 ... KVM_REG_PPC_VSR31:
 717                         if (cpu_has_feature(CPU_FTR_VSX)) {
 718                                 i = id - KVM_REG_PPC_VSR0;
 719                                 vcpu->arch.fp.fpr[i][0] = val->vsxval[0];
 720                                 vcpu->arch.fp.fpr[i][1] = val->vsxval[1];
 721                         } else {
 722                                 r = -ENXIO;
 723                         }
 724                         break;
 725 #endif /* CONFIG_VSX */
 726 #ifdef CONFIG_KVM_XICS
 727                 case KVM_REG_PPC_ICP_STATE:
 728                         if (!vcpu->arch.icp && !vcpu->arch.xive_vcpu) {
 729                                 r = -ENXIO;
 730                                 break;
 731                         }
 732                         if (xics_on_xive())
 733                                 r = kvmppc_xive_set_icp(vcpu, set_reg_val(id, *val));
 734                         else
 735                                 r = kvmppc_xics_set_icp(vcpu, set_reg_val(id, *val));
 736                         break;
 737 #endif /* CONFIG_KVM_XICS */
 738 #ifdef CONFIG_KVM_XIVE
 739                 case KVM_REG_PPC_VP_STATE:
 740                         if (!vcpu->arch.xive_vcpu) {
 741                                 r = -ENXIO;
 742                                 break;
 743                         }
 744                         if (xive_enabled())
 745                                 r = kvmppc_xive_native_set_vp(vcpu, val);
 746                         else
 747                                 r = -ENXIO;
 748                         break;
 749 #endif /* CONFIG_KVM_XIVE */
 750                 case KVM_REG_PPC_FSCR:
 751                         vcpu->arch.fscr = set_reg_val(id, *val);
 752                         break;
 753                 case KVM_REG_PPC_TAR:
 754                         vcpu->arch.tar = set_reg_val(id, *val);
 755                         break;
 756                 case KVM_REG_PPC_EBBHR:
 757                         vcpu->arch.ebbhr = set_reg_val(id, *val);
 758                         break;
 759                 case KVM_REG_PPC_EBBRR:
 760                         vcpu->arch.ebbrr = set_reg_val(id, *val);
 761                         break;
 762                 case KVM_REG_PPC_BESCR:
 763                         vcpu->arch.bescr = set_reg_val(id, *val);
 764                         break;
 765                 case KVM_REG_PPC_IC:
 766                         vcpu->arch.ic = set_reg_val(id, *val);
 767                         break;
 768                 default:
 769                         r = -EINVAL;
 770                         break;
 771                 }
 772         }
 773
 774         return r;
 775 }
 776
 777 void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
 778 {
 779         vcpu->kvm->arch.kvm_ops->vcpu_load(vcpu, cpu);
 780 }
 781
 782 void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu)
 783 {
 784         vcpu->kvm->arch.kvm_ops->vcpu_put(vcpu);
 785 }
 786
 787 void kvmppc_set_msr(struct kvm_vcpu *vcpu, u64 msr)
 788 {
 789         vcpu->kvm->arch.kvm_ops->set_msr(vcpu, msr);
 790 }
 791 EXPORT_SYMBOL_GPL(kvmppc_set_msr);
 792
 793 int kvmppc_vcpu_run(struct kvm_vcpu *vcpu)
 794 {
 795         return vcpu->kvm->arch.kvm_ops->vcpu_run(vcpu);
 796 }
 797
 798 int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
 799                                   struct kvm_translation *tr)
 800 {
 801         return 0;
 802 }
 803
 804 int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
 805                                         struct kvm_guest_debug *dbg)
 806 {
 807         vcpu_load(vcpu);
 808         vcpu->guest_debug = dbg->control;
 809         vcpu_put(vcpu);
 810         return 0;
 811 }
 812
 813 void kvmppc_decrementer_func(struct kvm_vcpu *vcpu)
 814 {
 815         kvmppc_core_queue_dec(vcpu);
 816         kvm_vcpu_kick(vcpu);
 817 }
 818
 819 int kvmppc_core_vcpu_create(struct kvm_vcpu *vcpu)
 820 {
 821         return vcpu->kvm->arch.kvm_ops->vcpu_create(vcpu);
 822 }
 823
 824 void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu)
 825 {
 826         vcpu->kvm->arch.kvm_ops->vcpu_free(vcpu);
 827 }
 828
 829 int kvmppc_core_check_requests(struct kvm_vcpu *vcpu)
 830 {
 831         return vcpu->kvm->arch.kvm_ops->check_requests(vcpu);
 832 }
 833
 834 void kvm_arch_sync_dirty_log(struct kvm *kvm, struct kvm_memory_slot *memslot)
 835 {
 836
 837 }
 838
 839 int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, struct kvm_dirty_log *log)
 840 {
 841         return kvm->arch.kvm_ops->get_dirty_log(kvm, log);
 842 }
 843
 844 void kvmppc_core_free_memslot(struct kvm *kvm, struct kvm_memory_slot *slot)
 845 {
 846         kvm->arch.kvm_ops->free_memslot(slot);
 847 }
 848
 849 void kvmppc_core_flush_memslot(struct kvm *kvm, struct kvm_memory_slot *memslot)
 850 {
 851         kvm->arch.kvm_ops->flush_memslot(kvm, memslot);
 852 }
 853
 854 int kvmppc_core_prepare_memory_region(struct kvm *kvm,
 855                                 struct kvm_memory_slot *memslot,
 856                                 const struct kvm_userspace_memory_region *mem,
 857                                 enum kvm_mr_change change)
 858 {
 859         return kvm->arch.kvm_ops->prepare_memory_region(kvm, memslot, mem,
 860                                                         change);
 861 }
 862
 863 void kvmppc_core_commit_memory_region(struct kvm *kvm,
 864                                 const struct kvm_userspace_memory_region *mem,
 865                                 const struct kvm_memory_slot *old,
 866                                 const struct kvm_memory_slot *new,
 867                                 enum kvm_mr_change change)
 868 {
 869         kvm->arch.kvm_ops->commit_memory_region(kvm, mem, old, new, change);
 870 }
 871
 872 bool kvm_unmap_gfn_range(struct kvm *kvm, struct kvm_gfn_range *range)
 873 {
 874         return kvm->arch.kvm_ops->unmap_gfn_range(kvm, range);
 875 }
 876
 877 bool kvm_age_gfn(struct kvm *kvm, struct kvm_gfn_range *range)
 878 {
 879         return kvm->arch.kvm_ops->age_gfn(kvm, range);
 880 }
 881
 882 bool kvm_test_age_gfn(struct kvm *kvm, struct kvm_gfn_range *range)
 883 {
 884         return kvm->arch.kvm_ops->test_age_gfn(kvm, range);
 885 }
 886
 887 bool kvm_set_spte_gfn(struct kvm *kvm, struct kvm_gfn_range *range)
 888 {
 889         return kvm->arch.kvm_ops->set_spte_gfn(kvm, range);
 890 }
 891
 892 int kvmppc_core_init_vm(struct kvm *kvm)
 893 {
 894
 895 #ifdef CONFIG_PPC64
 896         INIT_LIST_HEAD_RCU(&kvm->arch.spapr_tce_tables);
 897         INIT_LIST_HEAD(&kvm->arch.rtas_tokens);
 898         mutex_init(&kvm->arch.rtas_token_lock);
 899 #endif
 900
 901         return kvm->arch.kvm_ops->init_vm(kvm);
 902 }
 903
 904 void kvmppc_core_destroy_vm(struct kvm *kvm)
 905 {
 906         kvm->arch.kvm_ops->destroy_vm(kvm);
 907
 908 #ifdef CONFIG_PPC64
 909         kvmppc_rtas_tokens_free(kvm);
 910         WARN_ON(!list_empty(&kvm->arch.spapr_tce_tables));
 911 #endif
 912
 913 #ifdef CONFIG_KVM_XICS
 914         /*
 915          * Free the XIVE and XICS devices which are not directly freed by the
 916          * device 'release' method
 917          */
 918         kfree(kvm->arch.xive_devices.native);
 919         kvm->arch.xive_devices.native = NULL;
 920         kfree(kvm->arch.xive_devices.xics_on_xive);
 921         kvm->arch.xive_devices.xics_on_xive = NULL;
 922         kfree(kvm->arch.xics_device);
 923         kvm->arch.xics_device = NULL;
 924 #endif /* CONFIG_KVM_XICS */
 925 }
 926
 927 int kvmppc_h_logical_ci_load(struct kvm_vcpu *vcpu)
 928 {
 929         unsigned long size = kvmppc_get_gpr(vcpu, 4);
 930         unsigned long addr = kvmppc_get_gpr(vcpu, 5);
 931         u64 buf;
 932         int srcu_idx;
 933         int ret;
 934
 935         if (!is_power_of_2(size) || (size > sizeof(buf)))
 936                 return H_TOO_HARD;
 937
 938         srcu_idx = srcu_read_lock(&vcpu->kvm->srcu);
 939         ret = kvm_io_bus_read(vcpu, KVM_MMIO_BUS, addr, size, &buf);
 940         srcu_read_unlock(&vcpu->kvm->srcu, srcu_idx);
 941         if (ret != 0)
 942                 return H_TOO_HARD;
 943
 944         switch (size) {
 945         case 1:
 946                 kvmppc_set_gpr(vcpu, 4, *(u8 *)&buf);
 947                 break;
 948
 949         case 2:
 950                 kvmppc_set_gpr(vcpu, 4, be16_to_cpu(*(__be16 *)&buf));
 951                 break;
 952
 953         case 4:
 954                 kvmppc_set_gpr(vcpu, 4, be32_to_cpu(*(__be32 *)&buf));
 955                 break;
 956
 957         case 8:
 958                 kvmppc_set_gpr(vcpu, 4, be64_to_cpu(*(__be64 *)&buf));
 959                 break;
 960
 961         default:
 962                 BUG();
 963         }
 964
 965         return H_SUCCESS;
 966 }
 967 EXPORT_SYMBOL_GPL(kvmppc_h_logical_ci_load);
 968
 969 int kvmppc_h_logical_ci_store(struct kvm_vcpu *vcpu)
 970 {
 971         unsigned long size = kvmppc_get_gpr(vcpu, 4);
 972         unsigned long addr = kvmppc_get_gpr(vcpu, 5);
 973         unsigned long val = kvmppc_get_gpr(vcpu, 6);
 974         u64 buf;
 975         int srcu_idx;
 976         int ret;
 977
 978         switch (size) {
 979         case 1:
 980                 *(u8 *)&buf = val;
 981                 break;
 982
 983         case 2:
 984                 *(__be16 *)&buf = cpu_to_be16(val);
 985                 break;
 986
 987         case 4:
 988                 *(__be32 *)&buf = cpu_to_be32(val);
 989                 break;
 990
 991         case 8:
 992                 *(__be64 *)&buf = cpu_to_be64(val);
 993                 break;
 994
 995         default:
 996                 return H_TOO_HARD;
 997         }
 998
 999         srcu_idx = srcu_read_lock(&vcpu->kvm->srcu);
1000         ret = kvm_io_bus_write(vcpu, KVM_MMIO_BUS, addr, size, &buf);
1001         srcu_read_unlock(&vcpu->kvm->srcu, srcu_idx);
1002         if (ret != 0)
1003                 return H_TOO_HARD;
1004
1005         return H_SUCCESS;
1006 }
1007 EXPORT_SYMBOL_GPL(kvmppc_h_logical_ci_store);
1008
1009 int kvmppc_core_check_processor_compat(void)
1010 {
1011         /*
1012          * We always return 0 for book3s. We check
1013          * for compatibility while loading the HV
1014          * or PR module
1015          */
1016         return 0;
1017 }
1018
1019 int kvmppc_book3s_hcall_implemented(struct kvm *kvm, unsigned long hcall)
1020 {
1021         return kvm->arch.kvm_ops->hcall_implemented(hcall);
1022 }
1023
1024 #ifdef CONFIG_KVM_XICS
1025 int kvm_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, int level,
1026                 bool line_status)
1027 {
1028         if (xics_on_xive())
1029                 return kvmppc_xive_set_irq(kvm, irq_source_id, irq, level,
1030                                            line_status);
1031         else
1032                 return kvmppc_xics_set_irq(kvm, irq_source_id, irq, level,
1033                                            line_status);
1034 }
1035
1036 int kvm_arch_set_irq_inatomic(struct kvm_kernel_irq_routing_entry *irq_entry,
1037                               struct kvm *kvm, int irq_source_id,
1038                               int level, bool line_status)
1039 {
1040         return kvm_set_irq(kvm, irq_source_id, irq_entry->gsi,
1041                            level, line_status);
1042 }
1043 static int kvmppc_book3s_set_irq(struct kvm_kernel_irq_routing_entry *e,
1044                                  struct kvm *kvm, int irq_source_id, int level,
1045                                  bool line_status)
1046 {
1047         return kvm_set_irq(kvm, irq_source_id, e->gsi, level, line_status);
1048 }
1049
1050 int kvm_irq_map_gsi(struct kvm *kvm,
1051                     struct kvm_kernel_irq_routing_entry *entries, int gsi)
1052 {
1053         entries->gsi = gsi;
1054         entries->type = KVM_IRQ_ROUTING_IRQCHIP;
1055         entries->set = kvmppc_book3s_set_irq;
1056         entries->irqchip.irqchip = 0;
1057         entries->irqchip.pin = gsi;
1058         return 1;
1059 }
1060
1061 int kvm_irq_map_chip_pin(struct kvm *kvm, unsigned irqchip, unsigned pin)
1062 {
1063         return pin;
1064 }
1065
1066 #endif /* CONFIG_KVM_XICS */
1067
1068 static int kvmppc_book3s_init(void)
1069 {
1070         int r;
1071
1072         r = kvm_init(NULL, sizeof(struct kvm_vcpu), 0, THIS_MODULE);
1073         if (r)
1074                 return r;
1075 #ifdef CONFIG_KVM_BOOK3S_32_HANDLER
1076         r = kvmppc_book3s_init_pr();
1077 #endif
1078
1079 #ifdef CONFIG_KVM_XICS
1080 #ifdef CONFIG_KVM_XIVE
1081         if (xics_on_xive()) {
1082                 kvm_register_device_ops(&kvm_xive_ops, KVM_DEV_TYPE_XICS);
1083                 if (kvmppc_xive_native_supported())
1084                         kvm_register_device_ops(&kvm_xive_native_ops,
1085                                                 KVM_DEV_TYPE_XIVE);
1086         } else
1087 #endif
1088                 kvm_register_device_ops(&kvm_xics_ops, KVM_DEV_TYPE_XICS);
1089 #endif
1090         return r;
1091 }
1092
1093 static void kvmppc_book3s_exit(void)
1094 {
1095 #ifdef CONFIG_KVM_BOOK3S_32_HANDLER
1096         kvmppc_book3s_exit_pr();
1097 #endif
1098         kvm_exit();
1099 }
1100
1101 module_init(kvmppc_book3s_init);
1102 module_exit(kvmppc_book3s_exit);
1103
1104 /* On 32bit this is our one and only kernel module */
1105 #ifdef CONFIG_KVM_BOOK3S_32_HANDLER
1106 MODULE_ALIAS_MISCDEV(KVM_MINOR);
1107 MODULE_ALIAS("devname:kvm");
1108 #endif