arch/powerpc/kvm/powerpc.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/vmalloc.h>
  25 #include <linux/hrtimer.h>
  26 #include <linux/sched/signal.h>
  27 #include <linux/fs.h>
  28 #include <linux/slab.h>
  29 #include <linux/file.h>
  30 #include <linux/module.h>
  31 #include <linux/irqbypass.h>
  32 #include <linux/kvm_irqfd.h>
  33 #include <asm/cputable.h>
  34 #include <linux/uaccess.h>
  35 #include <asm/kvm_ppc.h>
  36 #include <asm/tlbflush.h>
  37 #include <asm/cputhreads.h>
  38 #include <asm/irqflags.h>
  39 #include <asm/iommu.h>
  40 #include <asm/switch_to.h>
  41 #include <asm/xive.h>
  42
  43 #include "timing.h"
  44 #include "irq.h"
  45 #include "../mm/mmu_decl.h"
  46
  47 #define CREATE_TRACE_POINTS
  48 #include "trace.h"
  49
  50 struct kvmppc_ops *kvmppc_hv_ops;
  51 EXPORT_SYMBOL_GPL(kvmppc_hv_ops);
  52 struct kvmppc_ops *kvmppc_pr_ops;
  53 EXPORT_SYMBOL_GPL(kvmppc_pr_ops);
  54
  55
  56 int kvm_arch_vcpu_runnable(struct kvm_vcpu *v)
  57 {
  58         return !!(v->arch.pending_exceptions) ||
  59                v->requests;
  60 }
  61
  62 int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu)
  63 {
  64         return 1;
  65 }
  66
  67 /*
  68  * Common checks before entering the guest world.  Call with interrupts
  69  * disabled.
  70  *
  71  * returns:
  72  *
  73  * == 1 if we're ready to go into guest state
  74  * <= 0 if we need to go back to the host with return value
  75  */
  76 int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu)
  77 {
  78         int r;
  79
  80         WARN_ON(irqs_disabled());
  81         hard_irq_disable();
  82
  83         while (true) {
  84                 if (need_resched()) {
  85                         local_irq_enable();
  86                         cond_resched();
  87                         hard_irq_disable();
  88                         continue;
  89                 }
  90
  91                 if (signal_pending(current)) {
  92                         kvmppc_account_exit(vcpu, SIGNAL_EXITS);
  93                         vcpu->run->exit_reason = KVM_EXIT_INTR;
  94                         r = -EINTR;
  95                         break;
  96                 }
  97
  98                 vcpu->mode = IN_GUEST_MODE;
  99
 100                 /*
 101                  * Reading vcpu->requests must happen after setting vcpu->mode,
 102                  * so we don't miss a request because the requester sees
 103                  * OUTSIDE_GUEST_MODE and assumes we'll be checking requests
 104                  * before next entering the guest (and thus doesn't IPI).
 105                  * This also orders the write to mode from any reads
 106                  * to the page tables done while the VCPU is running.
 107                  * Please see the comment in kvm_flush_remote_tlbs.
 108                  */
 109                 smp_mb();
 110
 111                 if (vcpu->requests) {
 112                         /* Make sure we process requests preemptable */
 113                         local_irq_enable();
 114                         trace_kvm_check_requests(vcpu);
 115                         r = kvmppc_core_check_requests(vcpu);
 116                         hard_irq_disable();
 117                         if (r > 0)
 118                                 continue;
 119                         break;
 120                 }
 121
 122                 if (kvmppc_core_prepare_to_enter(vcpu)) {
 123                         /* interrupts got enabled in between, so we
 124                            are back at square 1 */
 125                         continue;
 126                 }
 127
 128                 guest_enter_irqoff();
 129                 return 1;
 130         }
 131
 132         /* return to host */
 133         local_irq_enable();
 134         return r;
 135 }
 136 EXPORT_SYMBOL_GPL(kvmppc_prepare_to_enter);
 137
 138 #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE)
 139 static void kvmppc_swab_shared(struct kvm_vcpu *vcpu)
 140 {
 141         struct kvm_vcpu_arch_shared *shared = vcpu->arch.shared;
 142         int i;
 143
 144         shared->sprg0 = swab64(shared->sprg0);
 145         shared->sprg1 = swab64(shared->sprg1);
 146         shared->sprg2 = swab64(shared->sprg2);
 147         shared->sprg3 = swab64(shared->sprg3);
 148         shared->srr0 = swab64(shared->srr0);
 149         shared->srr1 = swab64(shared->srr1);
 150         shared->dar = swab64(shared->dar);
 151         shared->msr = swab64(shared->msr);
 152         shared->dsisr = swab32(shared->dsisr);
 153         shared->int_pending = swab32(shared->int_pending);
 154         for (i = 0; i < ARRAY_SIZE(shared->sr); i++)
 155                 shared->sr[i] = swab32(shared->sr[i]);
 156 }
 157 #endif
 158
 159 int kvmppc_kvm_pv(struct kvm_vcpu *vcpu)
 160 {
 161         int nr = kvmppc_get_gpr(vcpu, 11);
 162         int r;
 163         unsigned long __maybe_unused param1 = kvmppc_get_gpr(vcpu, 3);
 164         unsigned long __maybe_unused param2 = kvmppc_get_gpr(vcpu, 4);
 165         unsigned long __maybe_unused param3 = kvmppc_get_gpr(vcpu, 5);
 166         unsigned long __maybe_unused param4 = kvmppc_get_gpr(vcpu, 6);
 167         unsigned long r2 = 0;
 168
 169         if (!(kvmppc_get_msr(vcpu) & MSR_SF)) {
 170                 /* 32 bit mode */
 171                 param1 &= 0xffffffff;
 172                 param2 &= 0xffffffff;
 173                 param3 &= 0xffffffff;
 174                 param4 &= 0xffffffff;
 175         }
 176
 177         switch (nr) {
 178         case KVM_HCALL_TOKEN(KVM_HC_PPC_MAP_MAGIC_PAGE):
 179         {
 180 #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE)
 181                 /* Book3S can be little endian, find it out here */
 182                 int shared_big_endian = true;
 183                 if (vcpu->arch.intr_msr & MSR_LE)
 184                         shared_big_endian = false;
 185                 if (shared_big_endian != vcpu->arch.shared_big_endian)
 186                         kvmppc_swab_shared(vcpu);
 187                 vcpu->arch.shared_big_endian = shared_big_endian;
 188 #endif
 189
 190                 if (!(param2 & MAGIC_PAGE_FLAG_NOT_MAPPED_NX)) {
 191                         /*
 192                          * Older versions of the Linux magic page code had
 193                          * a bug where they would map their trampoline code
 194                          * NX. If that's the case, remove !PR NX capability.
 195                          */
 196                         vcpu->arch.disable_kernel_nx = true;
 197                         kvm_make_request(KVM_REQ_TLB_FLUSH, vcpu);
 198                 }
 199
 200                 vcpu->arch.magic_page_pa = param1 & ~0xfffULL;
 201                 vcpu->arch.magic_page_ea = param2 & ~0xfffULL;
 202
 203 #ifdef CONFIG_PPC_64K_PAGES
 204                 /*
 205                  * Make sure our 4k magic page is in the same window of a 64k
 206                  * page within the guest and within the host's page.
 207                  */
 208                 if ((vcpu->arch.magic_page_pa & 0xf000) !=
 209                     ((ulong)vcpu->arch.shared & 0xf000)) {
 210                         void *old_shared = vcpu->arch.shared;
 211                         ulong shared = (ulong)vcpu->arch.shared;
 212                         void *new_shared;
 213
 214                         shared &= PAGE_MASK;
 215                         shared |= vcpu->arch.magic_page_pa & 0xf000;
 216                         new_shared = (void*)shared;
 217                         memcpy(new_shared, old_shared, 0x1000);
 218                         vcpu->arch.shared = new_shared;
 219                 }
 220 #endif
 221
 222                 r2 = KVM_MAGIC_FEAT_SR | KVM_MAGIC_FEAT_MAS0_TO_SPRG7;
 223
 224                 r = EV_SUCCESS;
 225                 break;
 226         }
 227         case KVM_HCALL_TOKEN(KVM_HC_FEATURES):
 228                 r = EV_SUCCESS;
 229 #if defined(CONFIG_PPC_BOOK3S) || defined(CONFIG_KVM_E500V2)
 230                 r2 |= (1 << KVM_FEATURE_MAGIC_PAGE);
 231 #endif
 232
 233                 /* Second return value is in r4 */
 234                 break;
 235         case EV_HCALL_TOKEN(EV_IDLE):
 236                 r = EV_SUCCESS;
 237                 kvm_vcpu_block(vcpu);
 238                 kvm_clear_request(KVM_REQ_UNHALT, vcpu);
 239                 break;
 240         default:
 241                 r = EV_UNIMPLEMENTED;
 242                 break;
 243         }
 244
 245         kvmppc_set_gpr(vcpu, 4, r2);
 246
 247         return r;
 248 }
 249 EXPORT_SYMBOL_GPL(kvmppc_kvm_pv);
 250
 251 int kvmppc_sanity_check(struct kvm_vcpu *vcpu)
 252 {
 253         int r = false;
 254
 255         /* We have to know what CPU to virtualize */
 256         if (!vcpu->arch.pvr)
 257                 goto out;
 258
 259         /* PAPR only works with book3s_64 */
 260         if ((vcpu->arch.cpu_type != KVM_CPU_3S_64) && vcpu->arch.papr_enabled)
 261                 goto out;
 262
 263         /* HV KVM can only do PAPR mode for now */
 264         if (!vcpu->arch.papr_enabled && is_kvmppc_hv_enabled(vcpu->kvm))
 265                 goto out;
 266
 267 #ifdef CONFIG_KVM_BOOKE_HV
 268         if (!cpu_has_feature(CPU_FTR_EMB_HV))
 269                 goto out;
 270 #endif
 271
 272         r = true;
 273
 274 out:
 275         vcpu->arch.sane = r;
 276         return r ? 0 : -EINVAL;
 277 }
 278 EXPORT_SYMBOL_GPL(kvmppc_sanity_check);
 279
 280 int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu)
 281 {
 282         enum emulation_result er;
 283         int r;
 284
 285         er = kvmppc_emulate_loadstore(vcpu);
 286         switch (er) {
 287         case EMULATE_DONE:
 288                 /* Future optimization: only reload non-volatiles if they were
 289                  * actually modified. */
 290                 r = RESUME_GUEST_NV;
 291                 break;
 292         case EMULATE_AGAIN:
 293                 r = RESUME_GUEST;
 294                 break;
 295         case EMULATE_DO_MMIO:
 296                 run->exit_reason = KVM_EXIT_MMIO;
 297                 /* We must reload nonvolatiles because "update" load/store
 298                  * instructions modify register state. */
 299                 /* Future optimization: only reload non-volatiles if they were
 300                  * actually modified. */
 301                 r = RESUME_HOST_NV;
 302                 break;
 303         case EMULATE_FAIL:
 304         {
 305                 u32 last_inst;
 306
 307                 kvmppc_get_last_inst(vcpu, INST_GENERIC, &last_inst);
 308                 /* XXX Deliver Program interrupt to guest. */
 309                 pr_emerg("%s: emulation failed (%08x)\n", __func__, last_inst);
 310                 r = RESUME_HOST;
 311                 break;
 312         }
 313         default:
 314                 WARN_ON(1);
 315                 r = RESUME_GUEST;
 316         }
 317
 318         return r;
 319 }
 320 EXPORT_SYMBOL_GPL(kvmppc_emulate_mmio);
 321
 322 int kvmppc_st(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr,
 323               bool data)
 324 {
 325         ulong mp_pa = vcpu->arch.magic_page_pa & KVM_PAM & PAGE_MASK;
 326         struct kvmppc_pte pte;
 327         int r;
 328
 329         vcpu->stat.st++;
 330
 331         r = kvmppc_xlate(vcpu, *eaddr, data ? XLATE_DATA : XLATE_INST,
 332                          XLATE_WRITE, &pte);
 333         if (r < 0)
 334                 return r;
 335
 336         *eaddr = pte.raddr;
 337
 338         if (!pte.may_write)
 339                 return -EPERM;
 340
 341         /* Magic page override */
 342         if (kvmppc_supports_magic_page(vcpu) && mp_pa &&
 343             ((pte.raddr & KVM_PAM & PAGE_MASK) == mp_pa) &&
 344             !(kvmppc_get_msr(vcpu) & MSR_PR)) {
 345                 void *magic = vcpu->arch.shared;
 346                 magic += pte.eaddr & 0xfff;
 347                 memcpy(magic, ptr, size);
 348                 return EMULATE_DONE;
 349         }
 350
 351         if (kvm_write_guest(vcpu->kvm, pte.raddr, ptr, size))
 352                 return EMULATE_DO_MMIO;
 353
 354         return EMULATE_DONE;
 355 }
 356 EXPORT_SYMBOL_GPL(kvmppc_st);
 357
 358 int kvmppc_ld(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr,
 359                       bool data)
 360 {
 361         ulong mp_pa = vcpu->arch.magic_page_pa & KVM_PAM & PAGE_MASK;
 362         struct kvmppc_pte pte;
 363         int rc;
 364
 365         vcpu->stat.ld++;
 366
 367         rc = kvmppc_xlate(vcpu, *eaddr, data ? XLATE_DATA : XLATE_INST,
 368                           XLATE_READ, &pte);
 369         if (rc)
 370                 return rc;
 371
 372         *eaddr = pte.raddr;
 373
 374         if (!pte.may_read)
 375                 return -EPERM;
 376
 377         if (!data && !pte.may_execute)
 378                 return -ENOEXEC;
 379
 380         /* Magic page override */
 381         if (kvmppc_supports_magic_page(vcpu) && mp_pa &&
 382             ((pte.raddr & KVM_PAM & PAGE_MASK) == mp_pa) &&
 383             !(kvmppc_get_msr(vcpu) & MSR_PR)) {
 384                 void *magic = vcpu->arch.shared;
 385                 magic += pte.eaddr & 0xfff;
 386                 memcpy(ptr, magic, size);
 387                 return EMULATE_DONE;
 388         }
 389
 390         if (kvm_read_guest(vcpu->kvm, pte.raddr, ptr, size))
 391                 return EMULATE_DO_MMIO;
 392
 393         return EMULATE_DONE;
 394 }
 395 EXPORT_SYMBOL_GPL(kvmppc_ld);
 396
 397 int kvm_arch_hardware_enable(void)
 398 {
 399         return 0;
 400 }
 401
 402 int kvm_arch_hardware_setup(void)
 403 {
 404         return 0;
 405 }
 406
 407 void kvm_arch_check_processor_compat(void *rtn)
 408 {
 409         *(int *)rtn = kvmppc_core_check_processor_compat();
 410 }
 411
 412 int kvm_arch_init_vm(struct kvm *kvm, unsigned long type)
 413 {
 414         struct kvmppc_ops *kvm_ops = NULL;
 415         /*
 416          * if we have both HV and PR enabled, default is HV
 417          */
 418         if (type == 0) {
 419                 if (kvmppc_hv_ops)
 420                         kvm_ops = kvmppc_hv_ops;
 421                 else
 422                         kvm_ops = kvmppc_pr_ops;
 423                 if (!kvm_ops)
 424                         goto err_out;
 425         } else  if (type == KVM_VM_PPC_HV) {
 426                 if (!kvmppc_hv_ops)
 427                         goto err_out;
 428                 kvm_ops = kvmppc_hv_ops;
 429         } else if (type == KVM_VM_PPC_PR) {
 430                 if (!kvmppc_pr_ops)
 431                         goto err_out;
 432                 kvm_ops = kvmppc_pr_ops;
 433         } else
 434                 goto err_out;
 435
 436         if (kvm_ops->owner && !try_module_get(kvm_ops->owner))
 437                 return -ENOENT;
 438
 439         kvm->arch.kvm_ops = kvm_ops;
 440         return kvmppc_core_init_vm(kvm);
 441 err_out:
 442         return -EINVAL;
 443 }
 444
 445 bool kvm_arch_has_vcpu_debugfs(void)
 446 {
 447         return false;
 448 }
 449
 450 int kvm_arch_create_vcpu_debugfs(struct kvm_vcpu *vcpu)
 451 {
 452         return 0;
 453 }
 454
 455 void kvm_arch_destroy_vm(struct kvm *kvm)
 456 {
 457         unsigned int i;
 458         struct kvm_vcpu *vcpu;
 459
 460 #ifdef CONFIG_KVM_XICS
 461         /*
 462          * We call kick_all_cpus_sync() to ensure that all
 463          * CPUs have executed any pending IPIs before we
 464          * continue and free VCPUs structures below.
 465          */
 466         if (is_kvmppc_hv_enabled(kvm))
 467                 kick_all_cpus_sync();
 468 #endif
 469
 470         kvm_for_each_vcpu(i, vcpu, kvm)
 471                 kvm_arch_vcpu_free(vcpu);
 472
 473         mutex_lock(&kvm->lock);
 474         for (i = 0; i < atomic_read(&kvm->online_vcpus); i++)
 475                 kvm->vcpus[i] = NULL;
 476
 477         atomic_set(&kvm->online_vcpus, 0);
 478
 479         kvmppc_core_destroy_vm(kvm);
 480
 481         mutex_unlock(&kvm->lock);
 482
 483         /* drop the module reference */
 484         module_put(kvm->arch.kvm_ops->owner);
 485 }
 486
 487 int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext)
 488 {
 489         int r;
 490         /* Assume we're using HV mode when the HV module is loaded */
 491         int hv_enabled = kvmppc_hv_ops ? 1 : 0;
 492
 493         if (kvm) {
 494                 /*
 495                  * Hooray - we know which VM type we're running on. Depend on
 496                  * that rather than the guess above.
 497                  */
 498                 hv_enabled = is_kvmppc_hv_enabled(kvm);
 499         }
 500
 501         switch (ext) {
 502 #ifdef CONFIG_BOOKE
 503         case KVM_CAP_PPC_BOOKE_SREGS:
 504         case KVM_CAP_PPC_BOOKE_WATCHDOG:
 505         case KVM_CAP_PPC_EPR:
 506 #else
 507         case KVM_CAP_PPC_SEGSTATE:
 508         case KVM_CAP_PPC_HIOR:
 509         case KVM_CAP_PPC_PAPR:
 510 #endif
 511         case KVM_CAP_PPC_UNSET_IRQ:
 512         case KVM_CAP_PPC_IRQ_LEVEL:
 513         case KVM_CAP_ENABLE_CAP:
 514         case KVM_CAP_ENABLE_CAP_VM:
 515         case KVM_CAP_ONE_REG:
 516         case KVM_CAP_IOEVENTFD:
 517         case KVM_CAP_DEVICE_CTRL:
 518         case KVM_CAP_IMMEDIATE_EXIT:
 519                 r = 1;
 520                 break;
 521         case KVM_CAP_PPC_PAIRED_SINGLES:
 522         case KVM_CAP_PPC_OSI:
 523         case KVM_CAP_PPC_GET_PVINFO:
 524 #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC)
 525         case KVM_CAP_SW_TLB:
 526 #endif
 527                 /* We support this only for PR */
 528                 r = !hv_enabled;
 529                 break;
 530 #ifdef CONFIG_KVM_MPIC
 531         case KVM_CAP_IRQ_MPIC:
 532                 r = 1;
 533                 break;
 534 #endif
 535
 536 #ifdef CONFIG_PPC_BOOK3S_64
 537         case KVM_CAP_SPAPR_TCE:
 538         case KVM_CAP_SPAPR_TCE_64:
 539                 /* fallthrough */
 540         case KVM_CAP_SPAPR_TCE_VFIO:
 541         case KVM_CAP_PPC_RTAS:
 542         case KVM_CAP_PPC_FIXUP_HCALL:
 543         case KVM_CAP_PPC_ENABLE_HCALL:
 544 #ifdef CONFIG_KVM_XICS
 545         case KVM_CAP_IRQ_XICS:
 546 #endif
 547                 r = 1;
 548                 break;
 549
 550         case KVM_CAP_PPC_ALLOC_HTAB:
 551                 r = hv_enabled;
 552                 break;
 553 #endif /* CONFIG_PPC_BOOK3S_64 */
 554 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
 555         case KVM_CAP_PPC_SMT:
 556                 r = 0;
 557                 if (hv_enabled) {
 558                         if (cpu_has_feature(CPU_FTR_ARCH_300))
 559                                 r = 1;
 560                         else
 561                                 r = threads_per_subcore;
 562                 }
 563                 break;
 564         case KVM_CAP_PPC_RMA:
 565                 r = 0;
 566                 break;
 567         case KVM_CAP_PPC_HWRNG:
 568                 r = kvmppc_hwrng_present();
 569                 break;
 570         case KVM_CAP_PPC_MMU_RADIX:
 571                 r = !!(hv_enabled && radix_enabled());
 572                 break;
 573         case KVM_CAP_PPC_MMU_HASH_V3:
 574                 r = !!(hv_enabled && !radix_enabled() &&
 575                        cpu_has_feature(CPU_FTR_ARCH_300));
 576                 break;
 577 #endif
 578         case KVM_CAP_SYNC_MMU:
 579 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
 580                 r = hv_enabled;
 581 #elif defined(KVM_ARCH_WANT_MMU_NOTIFIER)
 582                 r = 1;
 583 #else
 584                 r = 0;
 585 #endif
 586                 break;
 587 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
 588         case KVM_CAP_PPC_HTAB_FD:
 589                 r = hv_enabled;
 590                 break;
 591 #endif
 592         case KVM_CAP_NR_VCPUS:
 593                 /*
 594                  * Recommending a number of CPUs is somewhat arbitrary; we
 595                  * return the number of present CPUs for -HV (since a host
 596                  * will have secondary threads "offline"), and for other KVM
 597                  * implementations just count online CPUs.
 598                  */
 599                 if (hv_enabled)
 600                         r = num_present_cpus();
 601                 else
 602                         r = num_online_cpus();
 603                 break;
 604         case KVM_CAP_NR_MEMSLOTS:
 605                 r = KVM_USER_MEM_SLOTS;
 606                 break;
 607         case KVM_CAP_MAX_VCPUS:
 608                 r = KVM_MAX_VCPUS;
 609                 break;
 610 #ifdef CONFIG_PPC_BOOK3S_64
 611         case KVM_CAP_PPC_GET_SMMU_INFO:
 612                 r = 1;
 613                 break;
 614         case KVM_CAP_SPAPR_MULTITCE:
 615                 r = 1;
 616                 break;
 617         case KVM_CAP_SPAPR_RESIZE_HPT:
 618                 /* Disable this on POWER9 until code handles new HPTE format */
 619                 r = !!hv_enabled && !cpu_has_feature(CPU_FTR_ARCH_300);
 620                 break;
 621 #endif
 622         case KVM_CAP_PPC_HTM:
 623                 r = cpu_has_feature(CPU_FTR_TM_COMP) &&
 624                     is_kvmppc_hv_enabled(kvm);
 625                 break;
 626         default:
 627                 r = 0;
 628                 break;
 629         }
 630         return r;
 631
 632 }
 633
 634 long kvm_arch_dev_ioctl(struct file *filp,
 635                         unsigned int ioctl, unsigned long arg)
 636 {
 637         return -EINVAL;
 638 }
 639
 640 void kvm_arch_free_memslot(struct kvm *kvm, struct kvm_memory_slot *free,
 641                            struct kvm_memory_slot *dont)
 642 {
 643         kvmppc_core_free_memslot(kvm, free, dont);
 644 }
 645
 646 int kvm_arch_create_memslot(struct kvm *kvm, struct kvm_memory_slot *slot,
 647                             unsigned long npages)
 648 {
 649         return kvmppc_core_create_memslot(kvm, slot, npages);
 650 }
 651
 652 int kvm_arch_prepare_memory_region(struct kvm *kvm,
 653                                    struct kvm_memory_slot *memslot,
 654                                    const struct kvm_userspace_memory_region *mem,
 655                                    enum kvm_mr_change change)
 656 {
 657         return kvmppc_core_prepare_memory_region(kvm, memslot, mem);
 658 }
 659
 660 void kvm_arch_commit_memory_region(struct kvm *kvm,
 661                                    const struct kvm_userspace_memory_region *mem,
 662                                    const struct kvm_memory_slot *old,
 663                                    const struct kvm_memory_slot *new,
 664                                    enum kvm_mr_change change)
 665 {
 666         kvmppc_core_commit_memory_region(kvm, mem, old, new);
 667 }
 668
 669 void kvm_arch_flush_shadow_memslot(struct kvm *kvm,
 670                                    struct kvm_memory_slot *slot)
 671 {
 672         kvmppc_core_flush_memslot(kvm, slot);
 673 }
 674
 675 struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id)
 676 {
 677         struct kvm_vcpu *vcpu;
 678         vcpu = kvmppc_core_vcpu_create(kvm, id);
 679         if (!IS_ERR(vcpu)) {
 680                 vcpu->arch.wqp = &vcpu->wq;
 681                 kvmppc_create_vcpu_debugfs(vcpu, id);
 682         }
 683         return vcpu;
 684 }
 685
 686 void kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu)
 687 {
 688 }
 689
 690 void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu)
 691 {
 692         /* Make sure we're not using the vcpu anymore */
 693         hrtimer_cancel(&vcpu->arch.dec_timer);
 694
 695         kvmppc_remove_vcpu_debugfs(vcpu);
 696
 697         switch (vcpu->arch.irq_type) {
 698         case KVMPPC_IRQ_MPIC:
 699                 kvmppc_mpic_disconnect_vcpu(vcpu->arch.mpic, vcpu);
 700                 break;
 701         case KVMPPC_IRQ_XICS:
 702                 if (xive_enabled())
 703                         kvmppc_xive_cleanup_vcpu(vcpu);
 704                 else
 705                         kvmppc_xics_free_icp(vcpu);
 706                 break;
 707         }
 708
 709         kvmppc_core_vcpu_free(vcpu);
 710 }
 711
 712 void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu)
 713 {
 714         kvm_arch_vcpu_free(vcpu);
 715 }
 716
 717 int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu)
 718 {
 719         return kvmppc_core_pending_dec(vcpu);
 720 }
 721
 722 static enum hrtimer_restart kvmppc_decrementer_wakeup(struct hrtimer *timer)
 723 {
 724         struct kvm_vcpu *vcpu;
 725
 726         vcpu = container_of(timer, struct kvm_vcpu, arch.dec_timer);
 727         kvmppc_decrementer_func(vcpu);
 728
 729         return HRTIMER_NORESTART;
 730 }
 731
 732 int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu)
 733 {
 734         int ret;
 735
 736         hrtimer_init(&vcpu->arch.dec_timer, CLOCK_REALTIME, HRTIMER_MODE_ABS);
 737         vcpu->arch.dec_timer.function = kvmppc_decrementer_wakeup;
 738         vcpu->arch.dec_expires = ~(u64)0;
 739
 740 #ifdef CONFIG_KVM_EXIT_TIMING
 741         mutex_init(&vcpu->arch.exit_timing_lock);
 742 #endif
 743         ret = kvmppc_subarch_vcpu_init(vcpu);
 744         return ret;
 745 }
 746
 747 void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu)
 748 {
 749         kvmppc_mmu_destroy(vcpu);
 750         kvmppc_subarch_vcpu_uninit(vcpu);
 751 }
 752
 753 void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
 754 {
 755 #ifdef CONFIG_BOOKE
 756         /*
 757          * vrsave (formerly usprg0) isn't used by Linux, but may
 758          * be used by the guest.
 759          *
 760          * On non-booke this is associated with Altivec and
 761          * is handled by code in book3s.c.
 762          */
 763         mtspr(SPRN_VRSAVE, vcpu->arch.vrsave);
 764 #endif
 765         kvmppc_core_vcpu_load(vcpu, cpu);
 766 }
 767
 768 void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu)
 769 {
 770         kvmppc_core_vcpu_put(vcpu);
 771 #ifdef CONFIG_BOOKE
 772         vcpu->arch.vrsave = mfspr(SPRN_VRSAVE);
 773 #endif
 774 }
 775
 776 /*
 777  * irq_bypass_add_producer and irq_bypass_del_producer are only
 778  * useful if the architecture supports PCI passthrough.
 779  * irq_bypass_stop and irq_bypass_start are not needed and so
 780  * kvm_ops are not defined for them.
 781  */
 782 bool kvm_arch_has_irq_bypass(void)
 783 {
 784         return ((kvmppc_hv_ops && kvmppc_hv_ops->irq_bypass_add_producer) ||
 785                 (kvmppc_pr_ops && kvmppc_pr_ops->irq_bypass_add_producer));
 786 }
 787
 788 int kvm_arch_irq_bypass_add_producer(struct irq_bypass_consumer *cons,
 789                                      struct irq_bypass_producer *prod)
 790 {
 791         struct kvm_kernel_irqfd *irqfd =
 792                 container_of(cons, struct kvm_kernel_irqfd, consumer);
 793         struct kvm *kvm = irqfd->kvm;
 794
 795         if (kvm->arch.kvm_ops->irq_bypass_add_producer)
 796                 return kvm->arch.kvm_ops->irq_bypass_add_producer(cons, prod);
 797
 798         return 0;
 799 }
 800
 801 void kvm_arch_irq_bypass_del_producer(struct irq_bypass_consumer *cons,
 802                                       struct irq_bypass_producer *prod)
 803 {
 804         struct kvm_kernel_irqfd *irqfd =
 805                 container_of(cons, struct kvm_kernel_irqfd, consumer);
 806         struct kvm *kvm = irqfd->kvm;
 807
 808         if (kvm->arch.kvm_ops->irq_bypass_del_producer)
 809                 kvm->arch.kvm_ops->irq_bypass_del_producer(cons, prod);
 810 }
 811
 812 #ifdef CONFIG_VSX
 813 static inline int kvmppc_get_vsr_dword_offset(int index)
 814 {
 815         int offset;
 816
 817         if ((index != 0) && (index != 1))
 818                 return -1;
 819
 820 #ifdef __BIG_ENDIAN
 821         offset =  index;
 822 #else
 823         offset = 1 - index;
 824 #endif
 825
 826         return offset;
 827 }
 828
 829 static inline int kvmppc_get_vsr_word_offset(int index)
 830 {
 831         int offset;
 832
 833         if ((index > 3) || (index < 0))
 834                 return -1;
 835
 836 #ifdef __BIG_ENDIAN
 837         offset = index;
 838 #else
 839         offset = 3 - index;
 840 #endif
 841         return offset;
 842 }
 843
 844 static inline void kvmppc_set_vsr_dword(struct kvm_vcpu *vcpu,
 845         u64 gpr)
 846 {
 847         union kvmppc_one_reg val;
 848         int offset = kvmppc_get_vsr_dword_offset(vcpu->arch.mmio_vsx_offset);
 849         int index = vcpu->arch.io_gpr & KVM_MMIO_REG_MASK;
 850
 851         if (offset == -1)
 852                 return;
 853
 854         if (vcpu->arch.mmio_vsx_tx_sx_enabled) {
 855                 val.vval = VCPU_VSX_VR(vcpu, index);
 856                 val.vsxval[offset] = gpr;
 857                 VCPU_VSX_VR(vcpu, index) = val.vval;
 858         } else {
 859                 VCPU_VSX_FPR(vcpu, index, offset) = gpr;
 860         }
 861 }
 862
 863 static inline void kvmppc_set_vsr_dword_dump(struct kvm_vcpu *vcpu,
 864         u64 gpr)
 865 {
 866         union kvmppc_one_reg val;
 867         int index = vcpu->arch.io_gpr & KVM_MMIO_REG_MASK;
 868
 869         if (vcpu->arch.mmio_vsx_tx_sx_enabled) {
 870                 val.vval = VCPU_VSX_VR(vcpu, index);
 871                 val.vsxval[0] = gpr;
 872                 val.vsxval[1] = gpr;
 873                 VCPU_VSX_VR(vcpu, index) = val.vval;
 874         } else {
 875                 VCPU_VSX_FPR(vcpu, index, 0) = gpr;
 876                 VCPU_VSX_FPR(vcpu, index, 1) = gpr;
 877         }
 878 }
 879
 880 static inline void kvmppc_set_vsr_word(struct kvm_vcpu *vcpu,
 881         u32 gpr32)
 882 {
 883         union kvmppc_one_reg val;
 884         int offset = kvmppc_get_vsr_word_offset(vcpu->arch.mmio_vsx_offset);
 885         int index = vcpu->arch.io_gpr & KVM_MMIO_REG_MASK;
 886         int dword_offset, word_offset;
 887
 888         if (offset == -1)
 889                 return;
 890
 891         if (vcpu->arch.mmio_vsx_tx_sx_enabled) {
 892                 val.vval = VCPU_VSX_VR(vcpu, index);
 893                 val.vsx32val[offset] = gpr32;
 894                 VCPU_VSX_VR(vcpu, index) = val.vval;
 895         } else {
 896                 dword_offset = offset / 2;
 897                 word_offset = offset % 2;
 898                 val.vsxval[0] = VCPU_VSX_FPR(vcpu, index, dword_offset);
 899                 val.vsx32val[word_offset] = gpr32;
 900                 VCPU_VSX_FPR(vcpu, index, dword_offset) = val.vsxval[0];
 901         }
 902 }
 903 #endif /* CONFIG_VSX */
 904
 905 #ifdef CONFIG_PPC_FPU
 906 static inline u64 sp_to_dp(u32 fprs)
 907 {
 908         u64 fprd;
 909
 910         preempt_disable();
 911         enable_kernel_fp();
 912         asm ("lfs%U1%X1 0,%1; stfd%U0%X0 0,%0" : "=m" (fprd) : "m" (fprs)
 913              : "fr0");
 914         preempt_enable();
 915         return fprd;
 916 }
 917
 918 static inline u32 dp_to_sp(u64 fprd)
 919 {
 920         u32 fprs;
 921
 922         preempt_disable();
 923         enable_kernel_fp();
 924         asm ("lfd%U1%X1 0,%1; stfs%U0%X0 0,%0" : "=m" (fprs) : "m" (fprd)
 925              : "fr0");
 926         preempt_enable();
 927         return fprs;
 928 }
 929
 930 #else
 931 #define sp_to_dp(x)     (x)
 932 #define dp_to_sp(x)     (x)
 933 #endif /* CONFIG_PPC_FPU */
 934
 935 static void kvmppc_complete_mmio_load(struct kvm_vcpu *vcpu,
 936                                       struct kvm_run *run)
 937 {
 938         u64 uninitialized_var(gpr);
 939
 940         if (run->mmio.len > sizeof(gpr)) {
 941                 printk(KERN_ERR "bad MMIO length: %d\n", run->mmio.len);
 942                 return;
 943         }
 944
 945         if (!vcpu->arch.mmio_host_swabbed) {
 946                 switch (run->mmio.len) {
 947                 case 8: gpr = *(u64 *)run->mmio.data; break;
 948                 case 4: gpr = *(u32 *)run->mmio.data; break;
 949                 case 2: gpr = *(u16 *)run->mmio.data; break;
 950                 case 1: gpr = *(u8 *)run->mmio.data; break;
 951                 }
 952         } else {
 953                 switch (run->mmio.len) {
 954                 case 8: gpr = swab64(*(u64 *)run->mmio.data); break;
 955                 case 4: gpr = swab32(*(u32 *)run->mmio.data); break;
 956                 case 2: gpr = swab16(*(u16 *)run->mmio.data); break;
 957                 case 1: gpr = *(u8 *)run->mmio.data; break;
 958                 }
 959         }
 960
 961         /* conversion between single and double precision */
 962         if ((vcpu->arch.mmio_sp64_extend) && (run->mmio.len == 4))
 963                 gpr = sp_to_dp(gpr);
 964
 965         if (vcpu->arch.mmio_sign_extend) {
 966                 switch (run->mmio.len) {
 967 #ifdef CONFIG_PPC64
 968                 case 4:
 969                         gpr = (s64)(s32)gpr;
 970                         break;
 971 #endif
 972                 case 2:
 973                         gpr = (s64)(s16)gpr;
 974                         break;
 975                 case 1:
 976                         gpr = (s64)(s8)gpr;
 977                         break;
 978                 }
 979         }
 980
 981         switch (vcpu->arch.io_gpr & KVM_MMIO_REG_EXT_MASK) {
 982         case KVM_MMIO_REG_GPR:
 983                 kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, gpr);
 984                 break;
 985         case KVM_MMIO_REG_FPR:
 986                 VCPU_FPR(vcpu, vcpu->arch.io_gpr & KVM_MMIO_REG_MASK) = gpr;
 987                 break;
 988 #ifdef CONFIG_PPC_BOOK3S
 989         case KVM_MMIO_REG_QPR:
 990                 vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr;
 991                 break;
 992         case KVM_MMIO_REG_FQPR:
 993                 VCPU_FPR(vcpu, vcpu->arch.io_gpr & KVM_MMIO_REG_MASK) = gpr;
 994                 vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr;
 995                 break;
 996 #endif
 997 #ifdef CONFIG_VSX
 998         case KVM_MMIO_REG_VSX:
 999                 if (vcpu->arch.mmio_vsx_copy_type == KVMPPC_VSX_COPY_DWORD)
1000                         kvmppc_set_vsr_dword(vcpu, gpr);
1001                 else if (vcpu->arch.mmio_vsx_copy_type == KVMPPC_VSX_COPY_WORD)
1002                         kvmppc_set_vsr_word(vcpu, gpr);
1003                 else if (vcpu->arch.mmio_vsx_copy_type ==
1004                                 KVMPPC_VSX_COPY_DWORD_LOAD_DUMP)
1005                         kvmppc_set_vsr_dword_dump(vcpu, gpr);
1006                 break;
1007 #endif
1008         default:
1009                 BUG();
1010         }
1011 }
1012
1013 static int __kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
1014                                 unsigned int rt, unsigned int bytes,
1015                                 int is_default_endian, int sign_extend)
1016 {
1017         int idx, ret;
1018         bool host_swabbed;
1019
1020         /* Pity C doesn't have a logical XOR operator */
1021         if (kvmppc_need_byteswap(vcpu)) {
1022                 host_swabbed = is_default_endian;
1023         } else {
1024                 host_swabbed = !is_default_endian;
1025         }
1026
1027         if (bytes > sizeof(run->mmio.data)) {
1028                 printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__,
1029                        run->mmio.len);
1030         }
1031
1032         run->mmio.phys_addr = vcpu->arch.paddr_accessed;
1033         run->mmio.len = bytes;
1034         run->mmio.is_write = 0;
1035
1036         vcpu->arch.io_gpr = rt;
1037         vcpu->arch.mmio_host_swabbed = host_swabbed;
1038         vcpu->mmio_needed = 1;
1039         vcpu->mmio_is_write = 0;
1040         vcpu->arch.mmio_sign_extend = sign_extend;
1041
1042         idx = srcu_read_lock(&vcpu->kvm->srcu);
1043
1044         ret = kvm_io_bus_read(vcpu, KVM_MMIO_BUS, run->mmio.phys_addr,
1045                               bytes, &run->mmio.data);
1046
1047         srcu_read_unlock(&vcpu->kvm->srcu, idx);
1048
1049         if (!ret) {
1050                 kvmppc_complete_mmio_load(vcpu, run);
1051                 vcpu->mmio_needed = 0;
1052                 return EMULATE_DONE;
1053         }
1054
1055         return EMULATE_DO_MMIO;
1056 }
1057
1058 int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
1059                        unsigned int rt, unsigned int bytes,
1060                        int is_default_endian)
1061 {
1062         return __kvmppc_handle_load(run, vcpu, rt, bytes, is_default_endian, 0);
1063 }
1064 EXPORT_SYMBOL_GPL(kvmppc_handle_load);
1065
1066 /* Same as above, but sign extends */
1067 int kvmppc_handle_loads(struct kvm_run *run, struct kvm_vcpu *vcpu,
1068                         unsigned int rt, unsigned int bytes,
1069                         int is_default_endian)
1070 {
1071         return __kvmppc_handle_load(run, vcpu, rt, bytes, is_default_endian, 1);
1072 }
1073
1074 #ifdef CONFIG_VSX
1075 int kvmppc_handle_vsx_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
1076                         unsigned int rt, unsigned int bytes,
1077                         int is_default_endian, int mmio_sign_extend)
1078 {
1079         enum emulation_result emulated = EMULATE_DONE;
1080
1081         /* Currently, mmio_vsx_copy_nums only allowed to be less than 4 */
1082         if ( (vcpu->arch.mmio_vsx_copy_nums > 4) ||
1083                 (vcpu->arch.mmio_vsx_copy_nums < 0) ) {
1084                 return EMULATE_FAIL;
1085         }
1086
1087         while (vcpu->arch.mmio_vsx_copy_nums) {
1088                 emulated = __kvmppc_handle_load(run, vcpu, rt, bytes,
1089                         is_default_endian, mmio_sign_extend);
1090
1091                 if (emulated != EMULATE_DONE)
1092                         break;
1093
1094                 vcpu->arch.paddr_accessed += run->mmio.len;
1095
1096                 vcpu->arch.mmio_vsx_copy_nums--;
1097                 vcpu->arch.mmio_vsx_offset++;
1098         }
1099         return emulated;
1100 }
1101 #endif /* CONFIG_VSX */
1102
1103 int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
1104                         u64 val, unsigned int bytes, int is_default_endian)
1105 {
1106         void *data = run->mmio.data;
1107         int idx, ret;
1108         bool host_swabbed;
1109
1110         /* Pity C doesn't have a logical XOR operator */
1111         if (kvmppc_need_byteswap(vcpu)) {
1112                 host_swabbed = is_default_endian;
1113         } else {
1114                 host_swabbed = !is_default_endian;
1115         }
1116
1117         if (bytes > sizeof(run->mmio.data)) {
1118                 printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__,
1119                        run->mmio.len);
1120         }
1121
1122         run->mmio.phys_addr = vcpu->arch.paddr_accessed;
1123         run->mmio.len = bytes;
1124         run->mmio.is_write = 1;
1125         vcpu->mmio_needed = 1;
1126         vcpu->mmio_is_write = 1;
1127
1128         if ((vcpu->arch.mmio_sp64_extend) && (bytes == 4))
1129                 val = dp_to_sp(val);
1130
1131         /* Store the value at the lowest bytes in 'data'. */
1132         if (!host_swabbed) {
1133                 switch (bytes) {
1134                 case 8: *(u64 *)data = val; break;
1135                 case 4: *(u32 *)data = val; break;
1136                 case 2: *(u16 *)data = val; break;
1137                 case 1: *(u8  *)data = val; break;
1138                 }
1139         } else {
1140                 switch (bytes) {
1141                 case 8: *(u64 *)data = swab64(val); break;
1142                 case 4: *(u32 *)data = swab32(val); break;
1143                 case 2: *(u16 *)data = swab16(val); break;
1144                 case 1: *(u8  *)data = val; break;
1145                 }
1146         }
1147
1148         idx = srcu_read_lock(&vcpu->kvm->srcu);
1149
1150         ret = kvm_io_bus_write(vcpu, KVM_MMIO_BUS, run->mmio.phys_addr,
1151                                bytes, &run->mmio.data);
1152
1153         srcu_read_unlock(&vcpu->kvm->srcu, idx);
1154
1155         if (!ret) {
1156                 vcpu->mmio_needed = 0;
1157                 return EMULATE_DONE;
1158         }
1159
1160         return EMULATE_DO_MMIO;
1161 }
1162 EXPORT_SYMBOL_GPL(kvmppc_handle_store);
1163
1164 #ifdef CONFIG_VSX
1165 static inline int kvmppc_get_vsr_data(struct kvm_vcpu *vcpu, int rs, u64 *val)
1166 {
1167         u32 dword_offset, word_offset;
1168         union kvmppc_one_reg reg;
1169         int vsx_offset = 0;
1170         int copy_type = vcpu->arch.mmio_vsx_copy_type;
1171         int result = 0;
1172
1173         switch (copy_type) {
1174         case KVMPPC_VSX_COPY_DWORD:
1175                 vsx_offset =
1176                         kvmppc_get_vsr_dword_offset(vcpu->arch.mmio_vsx_offset);
1177
1178                 if (vsx_offset == -1) {
1179                         result = -1;
1180                         break;
1181                 }
1182
1183                 if (!vcpu->arch.mmio_vsx_tx_sx_enabled) {
1184                         *val = VCPU_VSX_FPR(vcpu, rs, vsx_offset);
1185                 } else {
1186                         reg.vval = VCPU_VSX_VR(vcpu, rs);
1187                         *val = reg.vsxval[vsx_offset];
1188                 }
1189                 break;
1190
1191         case KVMPPC_VSX_COPY_WORD:
1192                 vsx_offset =
1193                         kvmppc_get_vsr_word_offset(vcpu->arch.mmio_vsx_offset);
1194
1195                 if (vsx_offset == -1) {
1196                         result = -1;
1197                         break;
1198                 }
1199
1200                 if (!vcpu->arch.mmio_vsx_tx_sx_enabled) {
1201                         dword_offset = vsx_offset / 2;
1202                         word_offset = vsx_offset % 2;
1203                         reg.vsxval[0] = VCPU_VSX_FPR(vcpu, rs, dword_offset);
1204                         *val = reg.vsx32val[word_offset];
1205                 } else {
1206                         reg.vval = VCPU_VSX_VR(vcpu, rs);
1207                         *val = reg.vsx32val[vsx_offset];
1208                 }
1209                 break;
1210
1211         default:
1212                 result = -1;
1213                 break;
1214         }
1215
1216         return result;
1217 }
1218
1219 int kvmppc_handle_vsx_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
1220                         int rs, unsigned int bytes, int is_default_endian)
1221 {
1222         u64 val;
1223         enum emulation_result emulated = EMULATE_DONE;
1224
1225         vcpu->arch.io_gpr = rs;
1226
1227         /* Currently, mmio_vsx_copy_nums only allowed to be less than 4 */
1228         if ( (vcpu->arch.mmio_vsx_copy_nums > 4) ||
1229                 (vcpu->arch.mmio_vsx_copy_nums < 0) ) {
1230                 return EMULATE_FAIL;
1231         }
1232
1233         while (vcpu->arch.mmio_vsx_copy_nums) {
1234                 if (kvmppc_get_vsr_data(vcpu, rs, &val) == -1)
1235                         return EMULATE_FAIL;
1236
1237                 emulated = kvmppc_handle_store(run, vcpu,
1238                          val, bytes, is_default_endian);
1239
1240                 if (emulated != EMULATE_DONE)
1241                         break;
1242
1243                 vcpu->arch.paddr_accessed += run->mmio.len;
1244
1245                 vcpu->arch.mmio_vsx_copy_nums--;
1246                 vcpu->arch.mmio_vsx_offset++;
1247         }
1248
1249         return emulated;
1250 }
1251
1252 static int kvmppc_emulate_mmio_vsx_loadstore(struct kvm_vcpu *vcpu,
1253                         struct kvm_run *run)
1254 {
1255         enum emulation_result emulated = EMULATE_FAIL;
1256         int r;
1257
1258         vcpu->arch.paddr_accessed += run->mmio.len;
1259
1260         if (!vcpu->mmio_is_write) {
1261                 emulated = kvmppc_handle_vsx_load(run, vcpu, vcpu->arch.io_gpr,
1262                          run->mmio.len, 1, vcpu->arch.mmio_sign_extend);
1263         } else {
1264                 emulated = kvmppc_handle_vsx_store(run, vcpu,
1265                          vcpu->arch.io_gpr, run->mmio.len, 1);
1266         }
1267
1268         switch (emulated) {
1269         case EMULATE_DO_MMIO:
1270                 run->exit_reason = KVM_EXIT_MMIO;
1271                 r = RESUME_HOST;
1272                 break;
1273         case EMULATE_FAIL:
1274                 pr_info("KVM: MMIO emulation failed (VSX repeat)\n");
1275                 run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
1276                 run->internal.suberror = KVM_INTERNAL_ERROR_EMULATION;
1277                 r = RESUME_HOST;
1278                 break;
1279         default:
1280                 r = RESUME_GUEST;
1281                 break;
1282         }
1283         return r;
1284 }
1285 #endif /* CONFIG_VSX */
1286
1287 int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg)
1288 {
1289         int r = 0;
1290         union kvmppc_one_reg val;
1291         int size;
1292
1293         size = one_reg_size(reg->id);
1294         if (size > sizeof(val))
1295                 return -EINVAL;
1296
1297         r = kvmppc_get_one_reg(vcpu, reg->id, &val);
1298         if (r == -EINVAL) {
1299                 r = 0;
1300                 switch (reg->id) {
1301 #ifdef CONFIG_ALTIVEC
1302                 case KVM_REG_PPC_VR0 ... KVM_REG_PPC_VR31:
1303                         if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
1304                                 r = -ENXIO;
1305                                 break;
1306                         }
1307                         val.vval = vcpu->arch.vr.vr[reg->id - KVM_REG_PPC_VR0];
1308                         break;
1309                 case KVM_REG_PPC_VSCR:
1310                         if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
1311                                 r = -ENXIO;
1312                                 break;
1313                         }
1314                         val = get_reg_val(reg->id, vcpu->arch.vr.vscr.u[3]);
1315                         break;
1316                 case KVM_REG_PPC_VRSAVE:
1317                         val = get_reg_val(reg->id, vcpu->arch.vrsave);
1318                         break;
1319 #endif /* CONFIG_ALTIVEC */
1320                 default:
1321                         r = -EINVAL;
1322                         break;
1323                 }
1324         }
1325
1326         if (r)
1327                 return r;
1328
1329         if (copy_to_user((char __user *)(unsigned long)reg->addr, &val, size))
1330                 r = -EFAULT;
1331
1332         return r;
1333 }
1334
1335 int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg)
1336 {
1337         int r;
1338         union kvmppc_one_reg val;
1339         int size;
1340
1341         size = one_reg_size(reg->id);
1342         if (size > sizeof(val))
1343                 return -EINVAL;
1344
1345         if (copy_from_user(&val, (char __user *)(unsigned long)reg->addr, size))
1346                 return -EFAULT;
1347
1348         r = kvmppc_set_one_reg(vcpu, reg->id, &val);
1349         if (r == -EINVAL) {
1350                 r = 0;
1351                 switch (reg->id) {
1352 #ifdef CONFIG_ALTIVEC
1353                 case KVM_REG_PPC_VR0 ... KVM_REG_PPC_VR31:
1354                         if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
1355                                 r = -ENXIO;
1356                                 break;
1357                         }
1358                         vcpu->arch.vr.vr[reg->id - KVM_REG_PPC_VR0] = val.vval;
1359                         break;
1360                 case KVM_REG_PPC_VSCR:
1361                         if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
1362                                 r = -ENXIO;
1363                                 break;
1364                         }
1365                         vcpu->arch.vr.vscr.u[3] = set_reg_val(reg->id, val);
1366                         break;
1367                 case KVM_REG_PPC_VRSAVE:
1368                         if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
1369                                 r = -ENXIO;
1370                                 break;
1371                         }
1372                         vcpu->arch.vrsave = set_reg_val(reg->id, val);
1373                         break;
1374 #endif /* CONFIG_ALTIVEC */
1375                 default:
1376                         r = -EINVAL;
1377                         break;
1378                 }
1379         }
1380
1381         return r;
1382 }
1383
1384 int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run)
1385 {
1386         int r;
1387         sigset_t sigsaved;
1388
1389         if (vcpu->mmio_needed) {
1390                 vcpu->mmio_needed = 0;
1391                 if (!vcpu->mmio_is_write)
1392                         kvmppc_complete_mmio_load(vcpu, run);
1393 #ifdef CONFIG_VSX
1394                 if (vcpu->arch.mmio_vsx_copy_nums > 0) {
1395                         vcpu->arch.mmio_vsx_copy_nums--;
1396                         vcpu->arch.mmio_vsx_offset++;
1397                 }
1398
1399                 if (vcpu->arch.mmio_vsx_copy_nums > 0) {
1400                         r = kvmppc_emulate_mmio_vsx_loadstore(vcpu, run);
1401                         if (r == RESUME_HOST) {
1402                                 vcpu->mmio_needed = 1;
1403                                 return r;
1404                         }
1405                 }
1406 #endif
1407         } else if (vcpu->arch.osi_needed) {
1408                 u64 *gprs = run->osi.gprs;
1409                 int i;
1410
1411                 for (i = 0; i < 32; i++)
1412                         kvmppc_set_gpr(vcpu, i, gprs[i]);
1413                 vcpu->arch.osi_needed = 0;
1414         } else if (vcpu->arch.hcall_needed) {
1415                 int i;
1416
1417                 kvmppc_set_gpr(vcpu, 3, run->papr_hcall.ret);
1418                 for (i = 0; i < 9; ++i)
1419                         kvmppc_set_gpr(vcpu, 4 + i, run->papr_hcall.args[i]);
1420                 vcpu->arch.hcall_needed = 0;
1421 #ifdef CONFIG_BOOKE
1422         } else if (vcpu->arch.epr_needed) {
1423                 kvmppc_set_epr(vcpu, run->epr.epr);
1424                 vcpu->arch.epr_needed = 0;
1425 #endif
1426         }
1427
1428         if (vcpu->sigset_active)
1429                 sigprocmask(SIG_SETMASK, &vcpu->sigset, &sigsaved);
1430
1431         if (run->immediate_exit)
1432                 r = -EINTR;
1433         else
1434                 r = kvmppc_vcpu_run(run, vcpu);
1435
1436         if (vcpu->sigset_active)
1437                 sigprocmask(SIG_SETMASK, &sigsaved, NULL);
1438
1439         return r;
1440 }
1441
1442 int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq)
1443 {
1444         if (irq->irq == KVM_INTERRUPT_UNSET) {
1445                 kvmppc_core_dequeue_external(vcpu);
1446                 return 0;
1447         }
1448
1449         kvmppc_core_queue_external(vcpu, irq);
1450
1451         kvm_vcpu_kick(vcpu);
1452
1453         return 0;
1454 }
1455
1456 static int kvm_vcpu_ioctl_enable_cap(struct kvm_vcpu *vcpu,
1457                                      struct kvm_enable_cap *cap)
1458 {
1459         int r;
1460
1461         if (cap->flags)
1462                 return -EINVAL;
1463
1464         switch (cap->cap) {
1465         case KVM_CAP_PPC_OSI:
1466                 r = 0;
1467                 vcpu->arch.osi_enabled = true;
1468                 break;
1469         case KVM_CAP_PPC_PAPR:
1470                 r = 0;
1471                 vcpu->arch.papr_enabled = true;
1472                 break;
1473         case KVM_CAP_PPC_EPR:
1474                 r = 0;
1475                 if (cap->args[0])
1476                         vcpu->arch.epr_flags |= KVMPPC_EPR_USER;
1477                 else
1478                         vcpu->arch.epr_flags &= ~KVMPPC_EPR_USER;
1479                 break;
1480 #ifdef CONFIG_BOOKE
1481         case KVM_CAP_PPC_BOOKE_WATCHDOG:
1482                 r = 0;
1483                 vcpu->arch.watchdog_enabled = true;
1484                 break;
1485 #endif
1486 #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC)
1487         case KVM_CAP_SW_TLB: {
1488                 struct kvm_config_tlb cfg;
1489                 void __user *user_ptr = (void __user *)(uintptr_t)cap->args[0];
1490
1491                 r = -EFAULT;
1492                 if (copy_from_user(&cfg, user_ptr, sizeof(cfg)))
1493                         break;
1494
1495                 r = kvm_vcpu_ioctl_config_tlb(vcpu, &cfg);
1496                 break;
1497         }
1498 #endif
1499 #ifdef CONFIG_KVM_MPIC
1500         case KVM_CAP_IRQ_MPIC: {
1501                 struct fd f;
1502                 struct kvm_device *dev;
1503
1504                 r = -EBADF;
1505                 f = fdget(cap->args[0]);
1506                 if (!f.file)
1507                         break;
1508
1509                 r = -EPERM;
1510                 dev = kvm_device_from_filp(f.file);
1511                 if (dev)
1512                         r = kvmppc_mpic_connect_vcpu(dev, vcpu, cap->args[1]);
1513
1514                 fdput(f);
1515                 break;
1516         }
1517 #endif
1518 #ifdef CONFIG_KVM_XICS
1519         case KVM_CAP_IRQ_XICS: {
1520                 struct fd f;
1521                 struct kvm_device *dev;
1522
1523                 r = -EBADF;
1524                 f = fdget(cap->args[0]);
1525                 if (!f.file)
1526                         break;
1527
1528                 r = -EPERM;
1529                 dev = kvm_device_from_filp(f.file);
1530                 if (dev) {
1531                         if (xive_enabled())
1532                                 r = kvmppc_xive_connect_vcpu(dev, vcpu, cap->args[1]);
1533                         else
1534                                 r = kvmppc_xics_connect_vcpu(dev, vcpu, cap->args[1]);
1535                 }
1536
1537                 fdput(f);
1538                 break;
1539         }
1540 #endif /* CONFIG_KVM_XICS */
1541         default:
1542                 r = -EINVAL;
1543                 break;
1544         }
1545
1546         if (!r)
1547                 r = kvmppc_sanity_check(vcpu);
1548
1549         return r;
1550 }
1551
1552 bool kvm_arch_intc_initialized(struct kvm *kvm)
1553 {
1554 #ifdef CONFIG_KVM_MPIC
1555         if (kvm->arch.mpic)
1556                 return true;
1557 #endif
1558 #ifdef CONFIG_KVM_XICS
1559         if (kvm->arch.xics || kvm->arch.xive)
1560                 return true;
1561 #endif
1562         return false;
1563 }
1564
1565 int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu,
1566                                     struct kvm_mp_state *mp_state)
1567 {
1568         return -EINVAL;
1569 }
1570
1571 int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,
1572                                     struct kvm_mp_state *mp_state)
1573 {
1574         return -EINVAL;
1575 }
1576
1577 long kvm_arch_vcpu_ioctl(struct file *filp,
1578                          unsigned int ioctl, unsigned long arg)
1579 {
1580         struct kvm_vcpu *vcpu = filp->private_data;
1581         void __user *argp = (void __user *)arg;
1582         long r;
1583
1584         switch (ioctl) {
1585         case KVM_INTERRUPT: {
1586                 struct kvm_interrupt irq;
1587                 r = -EFAULT;
1588                 if (copy_from_user(&irq, argp, sizeof(irq)))
1589                         goto out;
1590                 r = kvm_vcpu_ioctl_interrupt(vcpu, &irq);
1591                 goto out;
1592         }
1593
1594         case KVM_ENABLE_CAP:
1595         {
1596                 struct kvm_enable_cap cap;
1597                 r = -EFAULT;
1598                 if (copy_from_user(&cap, argp, sizeof(cap)))
1599                         goto out;
1600                 r = kvm_vcpu_ioctl_enable_cap(vcpu, &cap);
1601                 break;
1602         }
1603
1604         case KVM_SET_ONE_REG:
1605         case KVM_GET_ONE_REG:
1606         {
1607                 struct kvm_one_reg reg;
1608                 r = -EFAULT;
1609                 if (copy_from_user(&reg, argp, sizeof(reg)))
1610                         goto out;
1611                 if (ioctl == KVM_SET_ONE_REG)
1612                         r = kvm_vcpu_ioctl_set_one_reg(vcpu, &reg);
1613                 else
1614                         r = kvm_vcpu_ioctl_get_one_reg(vcpu, &reg);
1615                 break;
1616         }
1617
1618 #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC)
1619         case KVM_DIRTY_TLB: {
1620                 struct kvm_dirty_tlb dirty;
1621                 r = -EFAULT;
1622                 if (copy_from_user(&dirty, argp, sizeof(dirty)))
1623                         goto out;
1624                 r = kvm_vcpu_ioctl_dirty_tlb(vcpu, &dirty);
1625                 break;
1626         }
1627 #endif
1628         default:
1629                 r = -EINVAL;
1630         }
1631
1632 out:
1633         return r;
1634 }
1635
1636 int kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf)
1637 {
1638         return VM_FAULT_SIGBUS;
1639 }
1640
1641 static int kvm_vm_ioctl_get_pvinfo(struct kvm_ppc_pvinfo *pvinfo)
1642 {
1643         u32 inst_nop = 0x60000000;
1644 #ifdef CONFIG_KVM_BOOKE_HV
1645         u32 inst_sc1 = 0x44000022;
1646         pvinfo->hcall[0] = cpu_to_be32(inst_sc1);
1647         pvinfo->hcall[1] = cpu_to_be32(inst_nop);
1648         pvinfo->hcall[2] = cpu_to_be32(inst_nop);
1649         pvinfo->hcall[3] = cpu_to_be32(inst_nop);
1650 #else
1651         u32 inst_lis = 0x3c000000;
1652         u32 inst_ori = 0x60000000;
1653         u32 inst_sc = 0x44000002;
1654         u32 inst_imm_mask = 0xffff;
1655
1656         /*
1657          * The hypercall to get into KVM from within guest context is as
1658          * follows:
1659          *
1660          *    lis r0, r0, KVM_SC_MAGIC_R0@h
1661          *    ori r0, KVM_SC_MAGIC_R0@l
1662          *    sc
1663          *    nop
1664          */
1665         pvinfo->hcall[0] = cpu_to_be32(inst_lis | ((KVM_SC_MAGIC_R0 >> 16) & inst_imm_mask));
1666         pvinfo->hcall[1] = cpu_to_be32(inst_ori | (KVM_SC_MAGIC_R0 & inst_imm_mask));
1667         pvinfo->hcall[2] = cpu_to_be32(inst_sc);
1668         pvinfo->hcall[3] = cpu_to_be32(inst_nop);
1669 #endif
1670
1671         pvinfo->flags = KVM_PPC_PVINFO_FLAGS_EV_IDLE;
1672
1673         return 0;
1674 }
1675
1676 int kvm_vm_ioctl_irq_line(struct kvm *kvm, struct kvm_irq_level *irq_event,
1677                           bool line_status)
1678 {
1679         if (!irqchip_in_kernel(kvm))
1680                 return -ENXIO;
1681
1682         irq_event->status = kvm_set_irq(kvm, KVM_USERSPACE_IRQ_SOURCE_ID,
1683                                         irq_event->irq, irq_event->level,
1684                                         line_status);
1685         return 0;
1686 }
1687
1688
1689 static int kvm_vm_ioctl_enable_cap(struct kvm *kvm,
1690                                    struct kvm_enable_cap *cap)
1691 {
1692         int r;
1693
1694         if (cap->flags)
1695                 return -EINVAL;
1696
1697         switch (cap->cap) {
1698 #ifdef CONFIG_KVM_BOOK3S_64_HANDLER
1699         case KVM_CAP_PPC_ENABLE_HCALL: {
1700                 unsigned long hcall = cap->args[0];
1701
1702                 r = -EINVAL;
1703                 if (hcall > MAX_HCALL_OPCODE || (hcall & 3) ||
1704                     cap->args[1] > 1)
1705                         break;
1706                 if (!kvmppc_book3s_hcall_implemented(kvm, hcall))
1707                         break;
1708                 if (cap->args[1])
1709                         set_bit(hcall / 4, kvm->arch.enabled_hcalls);
1710                 else
1711                         clear_bit(hcall / 4, kvm->arch.enabled_hcalls);
1712                 r = 0;
1713                 break;
1714         }
1715 #endif
1716         default:
1717                 r = -EINVAL;
1718                 break;
1719         }
1720
1721         return r;
1722 }
1723
1724 long kvm_arch_vm_ioctl(struct file *filp,
1725                        unsigned int ioctl, unsigned long arg)
1726 {
1727         struct kvm *kvm __maybe_unused = filp->private_data;
1728         void __user *argp = (void __user *)arg;
1729         long r;
1730
1731         switch (ioctl) {
1732         case KVM_PPC_GET_PVINFO: {
1733                 struct kvm_ppc_pvinfo pvinfo;
1734                 memset(&pvinfo, 0, sizeof(pvinfo));
1735                 r = kvm_vm_ioctl_get_pvinfo(&pvinfo);
1736                 if (copy_to_user(argp, &pvinfo, sizeof(pvinfo))) {
1737                         r = -EFAULT;
1738                         goto out;
1739                 }
1740
1741                 break;
1742         }
1743         case KVM_ENABLE_CAP:
1744         {
1745                 struct kvm_enable_cap cap;
1746                 r = -EFAULT;
1747                 if (copy_from_user(&cap, argp, sizeof(cap)))
1748                         goto out;
1749                 r = kvm_vm_ioctl_enable_cap(kvm, &cap);
1750                 break;
1751         }
1752 #ifdef CONFIG_SPAPR_TCE_IOMMU
1753         case KVM_CREATE_SPAPR_TCE_64: {
1754                 struct kvm_create_spapr_tce_64 create_tce_64;
1755
1756                 r = -EFAULT;
1757                 if (copy_from_user(&create_tce_64, argp, sizeof(create_tce_64)))
1758                         goto out;
1759                 if (create_tce_64.flags) {
1760                         r = -EINVAL;
1761                         goto out;
1762                 }
1763                 r = kvm_vm_ioctl_create_spapr_tce(kvm, &create_tce_64);
1764                 goto out;
1765         }
1766         case KVM_CREATE_SPAPR_TCE: {
1767                 struct kvm_create_spapr_tce create_tce;
1768                 struct kvm_create_spapr_tce_64 create_tce_64;
1769
1770                 r = -EFAULT;
1771                 if (copy_from_user(&create_tce, argp, sizeof(create_tce)))
1772                         goto out;
1773
1774                 create_tce_64.liobn = create_tce.liobn;
1775                 create_tce_64.page_shift = IOMMU_PAGE_SHIFT_4K;
1776                 create_tce_64.offset = 0;
1777                 create_tce_64.size = create_tce.window_size >>
1778                                 IOMMU_PAGE_SHIFT_4K;
1779                 create_tce_64.flags = 0;
1780                 r = kvm_vm_ioctl_create_spapr_tce(kvm, &create_tce_64);
1781                 goto out;
1782         }
1783 #endif
1784 #ifdef CONFIG_PPC_BOOK3S_64
1785         case KVM_PPC_GET_SMMU_INFO: {
1786                 struct kvm_ppc_smmu_info info;
1787                 struct kvm *kvm = filp->private_data;
1788
1789                 memset(&info, 0, sizeof(info));
1790                 r = kvm->arch.kvm_ops->get_smmu_info(kvm, &info);
1791                 if (r >= 0 && copy_to_user(argp, &info, sizeof(info)))
1792                         r = -EFAULT;
1793                 break;
1794         }
1795         case KVM_PPC_RTAS_DEFINE_TOKEN: {
1796                 struct kvm *kvm = filp->private_data;
1797
1798                 r = kvm_vm_ioctl_rtas_define_token(kvm, argp);
1799                 break;
1800         }
1801         case KVM_PPC_CONFIGURE_V3_MMU: {
1802                 struct kvm *kvm = filp->private_data;
1803                 struct kvm_ppc_mmuv3_cfg cfg;
1804
1805                 r = -EINVAL;
1806                 if (!kvm->arch.kvm_ops->configure_mmu)
1807                         goto out;
1808                 r = -EFAULT;
1809                 if (copy_from_user(&cfg, argp, sizeof(cfg)))
1810                         goto out;
1811                 r = kvm->arch.kvm_ops->configure_mmu(kvm, &cfg);
1812                 break;
1813         }
1814         case KVM_PPC_GET_RMMU_INFO: {
1815                 struct kvm *kvm = filp->private_data;
1816                 struct kvm_ppc_rmmu_info info;
1817
1818                 r = -EINVAL;
1819                 if (!kvm->arch.kvm_ops->get_rmmu_info)
1820                         goto out;
1821                 r = kvm->arch.kvm_ops->get_rmmu_info(kvm, &info);
1822                 if (r >= 0 && copy_to_user(argp, &info, sizeof(info)))
1823                         r = -EFAULT;
1824                 break;
1825         }
1826         default: {
1827                 struct kvm *kvm = filp->private_data;
1828                 r = kvm->arch.kvm_ops->arch_vm_ioctl(filp, ioctl, arg);
1829         }
1830 #else /* CONFIG_PPC_BOOK3S_64 */
1831         default:
1832                 r = -ENOTTY;
1833 #endif
1834         }
1835 out:
1836         return r;
1837 }
1838
1839 static unsigned long lpid_inuse[BITS_TO_LONGS(KVMPPC_NR_LPIDS)];
1840 static unsigned long nr_lpids;
1841
1842 long kvmppc_alloc_lpid(void)
1843 {
1844         long lpid;
1845
1846         do {
1847                 lpid = find_first_zero_bit(lpid_inuse, KVMPPC_NR_LPIDS);
1848                 if (lpid >= nr_lpids) {
1849                         pr_err("%s: No LPIDs free\n", __func__);
1850                         return -ENOMEM;
1851                 }
1852         } while (test_and_set_bit(lpid, lpid_inuse));
1853
1854         return lpid;
1855 }
1856 EXPORT_SYMBOL_GPL(kvmppc_alloc_lpid);
1857
1858 void kvmppc_claim_lpid(long lpid)
1859 {
1860         set_bit(lpid, lpid_inuse);
1861 }
1862 EXPORT_SYMBOL_GPL(kvmppc_claim_lpid);
1863
1864 void kvmppc_free_lpid(long lpid)
1865 {
1866         clear_bit(lpid, lpid_inuse);
1867 }
1868 EXPORT_SYMBOL_GPL(kvmppc_free_lpid);
1869
1870 void kvmppc_init_lpid(unsigned long nr_lpids_param)
1871 {
1872         nr_lpids = min_t(unsigned long, KVMPPC_NR_LPIDS, nr_lpids_param);
1873         memset(lpid_inuse, 0, sizeof(lpid_inuse));
1874 }
1875 EXPORT_SYMBOL_GPL(kvmppc_init_lpid);
1876
1877 int kvm_arch_init(void *opaque)
1878 {
1879         return 0;
1880 }
1881
1882 EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_ppc_instr);