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/fs.h> 27 #include <linux/slab.h> 28 #include <asm/cputable.h> 29 #include <asm/uaccess.h> 30 #include <asm/kvm_ppc.h> 31 #include <asm/tlbflush.h> 32 #include <asm/cputhreads.h> 33 #include "timing.h" 34 #include "../mm/mmu_decl.h" 35 36 #define CREATE_TRACE_POINTS 37 #include "trace.h" 38 39 int kvm_arch_vcpu_runnable(struct kvm_vcpu *v) 40 { 41 return !(v->arch.shared->msr & MSR_WE) || 42 !!(v->arch.pending_exceptions); 43 } 44 45 int kvmppc_kvm_pv(struct kvm_vcpu *vcpu) 46 { 47 int nr = kvmppc_get_gpr(vcpu, 11); 48 int r; 49 unsigned long __maybe_unused param1 = kvmppc_get_gpr(vcpu, 3); 50 unsigned long __maybe_unused param2 = kvmppc_get_gpr(vcpu, 4); 51 unsigned long __maybe_unused param3 = kvmppc_get_gpr(vcpu, 5); 52 unsigned long __maybe_unused param4 = kvmppc_get_gpr(vcpu, 6); 53 unsigned long r2 = 0; 54 55 if (!(vcpu->arch.shared->msr & MSR_SF)) { 56 /* 32 bit mode */ 57 param1 &= 0xffffffff; 58 param2 &= 0xffffffff; 59 param3 &= 0xffffffff; 60 param4 &= 0xffffffff; 61 } 62 63 switch (nr) { 64 case HC_VENDOR_KVM | KVM_HC_PPC_MAP_MAGIC_PAGE: 65 { 66 vcpu->arch.magic_page_pa = param1; 67 vcpu->arch.magic_page_ea = param2; 68 69 r2 = KVM_MAGIC_FEAT_SR; 70 71 r = HC_EV_SUCCESS; 72 break; 73 } 74 case HC_VENDOR_KVM | KVM_HC_FEATURES: 75 r = HC_EV_SUCCESS; 76 #if defined(CONFIG_PPC_BOOK3S) || defined(CONFIG_KVM_E500) 77 /* XXX Missing magic page on 44x */ 78 r2 |= (1 << KVM_FEATURE_MAGIC_PAGE); 79 #endif 80 81 /* Second return value is in r4 */ 82 break; 83 default: 84 r = HC_EV_UNIMPLEMENTED; 85 break; 86 } 87 88 kvmppc_set_gpr(vcpu, 4, r2); 89 90 return r; 91 } 92 93 int kvmppc_sanity_check(struct kvm_vcpu *vcpu) 94 { 95 int r = false; 96 97 /* We have to know what CPU to virtualize */ 98 if (!vcpu->arch.pvr) 99 goto out; 100 101 /* PAPR only works with book3s_64 */ 102 if ((vcpu->arch.cpu_type != KVM_CPU_3S_64) && vcpu->arch.papr_enabled) 103 goto out; 104 105 #ifdef CONFIG_KVM_BOOK3S_64_HV 106 /* HV KVM can only do PAPR mode for now */ 107 if (!vcpu->arch.papr_enabled) 108 goto out; 109 #endif 110 111 r = true; 112 113 out: 114 vcpu->arch.sane = r; 115 return r ? 0 : -EINVAL; 116 } 117 118 int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu) 119 { 120 enum emulation_result er; 121 int r; 122 123 er = kvmppc_emulate_instruction(run, vcpu); 124 switch (er) { 125 case EMULATE_DONE: 126 /* Future optimization: only reload non-volatiles if they were 127 * actually modified. */ 128 r = RESUME_GUEST_NV; 129 break; 130 case EMULATE_DO_MMIO: 131 run->exit_reason = KVM_EXIT_MMIO; 132 /* We must reload nonvolatiles because "update" load/store 133 * instructions modify register state. */ 134 /* Future optimization: only reload non-volatiles if they were 135 * actually modified. */ 136 r = RESUME_HOST_NV; 137 break; 138 case EMULATE_FAIL: 139 /* XXX Deliver Program interrupt to guest. */ 140 printk(KERN_EMERG "%s: emulation failed (%08x)\n", __func__, 141 kvmppc_get_last_inst(vcpu)); 142 r = RESUME_HOST; 143 break; 144 default: 145 BUG(); 146 } 147 148 return r; 149 } 150 151 int kvm_arch_hardware_enable(void *garbage) 152 { 153 return 0; 154 } 155 156 void kvm_arch_hardware_disable(void *garbage) 157 { 158 } 159 160 int kvm_arch_hardware_setup(void) 161 { 162 return 0; 163 } 164 165 void kvm_arch_hardware_unsetup(void) 166 { 167 } 168 169 void kvm_arch_check_processor_compat(void *rtn) 170 { 171 *(int *)rtn = kvmppc_core_check_processor_compat(); 172 } 173 174 int kvm_arch_init_vm(struct kvm *kvm) 175 { 176 return kvmppc_core_init_vm(kvm); 177 } 178 179 void kvm_arch_destroy_vm(struct kvm *kvm) 180 { 181 unsigned int i; 182 struct kvm_vcpu *vcpu; 183 184 kvm_for_each_vcpu(i, vcpu, kvm) 185 kvm_arch_vcpu_free(vcpu); 186 187 mutex_lock(&kvm->lock); 188 for (i = 0; i < atomic_read(&kvm->online_vcpus); i++) 189 kvm->vcpus[i] = NULL; 190 191 atomic_set(&kvm->online_vcpus, 0); 192 193 kvmppc_core_destroy_vm(kvm); 194 195 mutex_unlock(&kvm->lock); 196 } 197 198 void kvm_arch_sync_events(struct kvm *kvm) 199 { 200 } 201 202 int kvm_dev_ioctl_check_extension(long ext) 203 { 204 int r; 205 206 switch (ext) { 207 #ifdef CONFIG_BOOKE 208 case KVM_CAP_PPC_BOOKE_SREGS: 209 #else 210 case KVM_CAP_PPC_SEGSTATE: 211 case KVM_CAP_PPC_HIOR: 212 case KVM_CAP_PPC_PAPR: 213 #endif 214 case KVM_CAP_PPC_UNSET_IRQ: 215 case KVM_CAP_PPC_IRQ_LEVEL: 216 case KVM_CAP_ENABLE_CAP: 217 r = 1; 218 break; 219 #ifndef CONFIG_KVM_BOOK3S_64_HV 220 case KVM_CAP_PPC_PAIRED_SINGLES: 221 case KVM_CAP_PPC_OSI: 222 case KVM_CAP_PPC_GET_PVINFO: 223 r = 1; 224 break; 225 case KVM_CAP_COALESCED_MMIO: 226 r = KVM_COALESCED_MMIO_PAGE_OFFSET; 227 break; 228 #endif 229 #ifdef CONFIG_KVM_BOOK3S_64_HV 230 case KVM_CAP_SPAPR_TCE: 231 r = 1; 232 break; 233 case KVM_CAP_PPC_SMT: 234 r = threads_per_core; 235 break; 236 case KVM_CAP_PPC_RMA: 237 r = 1; 238 /* PPC970 requires an RMA */ 239 if (cpu_has_feature(CPU_FTR_ARCH_201)) 240 r = 2; 241 break; 242 #endif 243 default: 244 r = 0; 245 break; 246 } 247 return r; 248 249 } 250 251 long kvm_arch_dev_ioctl(struct file *filp, 252 unsigned int ioctl, unsigned long arg) 253 { 254 return -EINVAL; 255 } 256 257 int kvm_arch_prepare_memory_region(struct kvm *kvm, 258 struct kvm_memory_slot *memslot, 259 struct kvm_memory_slot old, 260 struct kvm_userspace_memory_region *mem, 261 int user_alloc) 262 { 263 return kvmppc_core_prepare_memory_region(kvm, mem); 264 } 265 266 void kvm_arch_commit_memory_region(struct kvm *kvm, 267 struct kvm_userspace_memory_region *mem, 268 struct kvm_memory_slot old, 269 int user_alloc) 270 { 271 kvmppc_core_commit_memory_region(kvm, mem); 272 } 273 274 275 void kvm_arch_flush_shadow(struct kvm *kvm) 276 { 277 } 278 279 struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id) 280 { 281 struct kvm_vcpu *vcpu; 282 vcpu = kvmppc_core_vcpu_create(kvm, id); 283 vcpu->arch.wqp = &vcpu->wq; 284 if (!IS_ERR(vcpu)) 285 kvmppc_create_vcpu_debugfs(vcpu, id); 286 return vcpu; 287 } 288 289 void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu) 290 { 291 /* Make sure we're not using the vcpu anymore */ 292 hrtimer_cancel(&vcpu->arch.dec_timer); 293 tasklet_kill(&vcpu->arch.tasklet); 294 295 kvmppc_remove_vcpu_debugfs(vcpu); 296 kvmppc_core_vcpu_free(vcpu); 297 } 298 299 void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu) 300 { 301 kvm_arch_vcpu_free(vcpu); 302 } 303 304 int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu) 305 { 306 return kvmppc_core_pending_dec(vcpu); 307 } 308 309 static void kvmppc_decrementer_func(unsigned long data) 310 { 311 struct kvm_vcpu *vcpu = (struct kvm_vcpu *)data; 312 313 kvmppc_core_queue_dec(vcpu); 314 315 if (waitqueue_active(vcpu->arch.wqp)) { 316 wake_up_interruptible(vcpu->arch.wqp); 317 vcpu->stat.halt_wakeup++; 318 } 319 } 320 321 /* 322 * low level hrtimer wake routine. Because this runs in hardirq context 323 * we schedule a tasklet to do the real work. 324 */ 325 enum hrtimer_restart kvmppc_decrementer_wakeup(struct hrtimer *timer) 326 { 327 struct kvm_vcpu *vcpu; 328 329 vcpu = container_of(timer, struct kvm_vcpu, arch.dec_timer); 330 tasklet_schedule(&vcpu->arch.tasklet); 331 332 return HRTIMER_NORESTART; 333 } 334 335 int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu) 336 { 337 hrtimer_init(&vcpu->arch.dec_timer, CLOCK_REALTIME, HRTIMER_MODE_ABS); 338 tasklet_init(&vcpu->arch.tasklet, kvmppc_decrementer_func, (ulong)vcpu); 339 vcpu->arch.dec_timer.function = kvmppc_decrementer_wakeup; 340 vcpu->arch.dec_expires = ~(u64)0; 341 342 #ifdef CONFIG_KVM_EXIT_TIMING 343 mutex_init(&vcpu->arch.exit_timing_lock); 344 #endif 345 346 return 0; 347 } 348 349 void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) 350 { 351 kvmppc_mmu_destroy(vcpu); 352 } 353 354 void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu) 355 { 356 #ifdef CONFIG_BOOKE 357 /* 358 * vrsave (formerly usprg0) isn't used by Linux, but may 359 * be used by the guest. 360 * 361 * On non-booke this is associated with Altivec and 362 * is handled by code in book3s.c. 363 */ 364 mtspr(SPRN_VRSAVE, vcpu->arch.vrsave); 365 #endif 366 kvmppc_core_vcpu_load(vcpu, cpu); 367 vcpu->cpu = smp_processor_id(); 368 } 369 370 void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu) 371 { 372 kvmppc_core_vcpu_put(vcpu); 373 #ifdef CONFIG_BOOKE 374 vcpu->arch.vrsave = mfspr(SPRN_VRSAVE); 375 #endif 376 vcpu->cpu = -1; 377 } 378 379 int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu, 380 struct kvm_guest_debug *dbg) 381 { 382 return -EINVAL; 383 } 384 385 static void kvmppc_complete_dcr_load(struct kvm_vcpu *vcpu, 386 struct kvm_run *run) 387 { 388 kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, run->dcr.data); 389 } 390 391 static void kvmppc_complete_mmio_load(struct kvm_vcpu *vcpu, 392 struct kvm_run *run) 393 { 394 u64 uninitialized_var(gpr); 395 396 if (run->mmio.len > sizeof(gpr)) { 397 printk(KERN_ERR "bad MMIO length: %d\n", run->mmio.len); 398 return; 399 } 400 401 if (vcpu->arch.mmio_is_bigendian) { 402 switch (run->mmio.len) { 403 case 8: gpr = *(u64 *)run->mmio.data; break; 404 case 4: gpr = *(u32 *)run->mmio.data; break; 405 case 2: gpr = *(u16 *)run->mmio.data; break; 406 case 1: gpr = *(u8 *)run->mmio.data; break; 407 } 408 } else { 409 /* Convert BE data from userland back to LE. */ 410 switch (run->mmio.len) { 411 case 4: gpr = ld_le32((u32 *)run->mmio.data); break; 412 case 2: gpr = ld_le16((u16 *)run->mmio.data); break; 413 case 1: gpr = *(u8 *)run->mmio.data; break; 414 } 415 } 416 417 if (vcpu->arch.mmio_sign_extend) { 418 switch (run->mmio.len) { 419 #ifdef CONFIG_PPC64 420 case 4: 421 gpr = (s64)(s32)gpr; 422 break; 423 #endif 424 case 2: 425 gpr = (s64)(s16)gpr; 426 break; 427 case 1: 428 gpr = (s64)(s8)gpr; 429 break; 430 } 431 } 432 433 kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, gpr); 434 435 switch (vcpu->arch.io_gpr & KVM_REG_EXT_MASK) { 436 case KVM_REG_GPR: 437 kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, gpr); 438 break; 439 case KVM_REG_FPR: 440 vcpu->arch.fpr[vcpu->arch.io_gpr & KVM_REG_MASK] = gpr; 441 break; 442 #ifdef CONFIG_PPC_BOOK3S 443 case KVM_REG_QPR: 444 vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_REG_MASK] = gpr; 445 break; 446 case KVM_REG_FQPR: 447 vcpu->arch.fpr[vcpu->arch.io_gpr & KVM_REG_MASK] = gpr; 448 vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_REG_MASK] = gpr; 449 break; 450 #endif 451 default: 452 BUG(); 453 } 454 } 455 456 int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu, 457 unsigned int rt, unsigned int bytes, int is_bigendian) 458 { 459 if (bytes > sizeof(run->mmio.data)) { 460 printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__, 461 run->mmio.len); 462 } 463 464 run->mmio.phys_addr = vcpu->arch.paddr_accessed; 465 run->mmio.len = bytes; 466 run->mmio.is_write = 0; 467 468 vcpu->arch.io_gpr = rt; 469 vcpu->arch.mmio_is_bigendian = is_bigendian; 470 vcpu->mmio_needed = 1; 471 vcpu->mmio_is_write = 0; 472 vcpu->arch.mmio_sign_extend = 0; 473 474 return EMULATE_DO_MMIO; 475 } 476 477 /* Same as above, but sign extends */ 478 int kvmppc_handle_loads(struct kvm_run *run, struct kvm_vcpu *vcpu, 479 unsigned int rt, unsigned int bytes, int is_bigendian) 480 { 481 int r; 482 483 r = kvmppc_handle_load(run, vcpu, rt, bytes, is_bigendian); 484 vcpu->arch.mmio_sign_extend = 1; 485 486 return r; 487 } 488 489 int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu, 490 u64 val, unsigned int bytes, int is_bigendian) 491 { 492 void *data = run->mmio.data; 493 494 if (bytes > sizeof(run->mmio.data)) { 495 printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__, 496 run->mmio.len); 497 } 498 499 run->mmio.phys_addr = vcpu->arch.paddr_accessed; 500 run->mmio.len = bytes; 501 run->mmio.is_write = 1; 502 vcpu->mmio_needed = 1; 503 vcpu->mmio_is_write = 1; 504 505 /* Store the value at the lowest bytes in 'data'. */ 506 if (is_bigendian) { 507 switch (bytes) { 508 case 8: *(u64 *)data = val; break; 509 case 4: *(u32 *)data = val; break; 510 case 2: *(u16 *)data = val; break; 511 case 1: *(u8 *)data = val; break; 512 } 513 } else { 514 /* Store LE value into 'data'. */ 515 switch (bytes) { 516 case 4: st_le32(data, val); break; 517 case 2: st_le16(data, val); break; 518 case 1: *(u8 *)data = val; break; 519 } 520 } 521 522 return EMULATE_DO_MMIO; 523 } 524 525 int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run) 526 { 527 int r; 528 sigset_t sigsaved; 529 530 if (vcpu->sigset_active) 531 sigprocmask(SIG_SETMASK, &vcpu->sigset, &sigsaved); 532 533 if (vcpu->mmio_needed) { 534 if (!vcpu->mmio_is_write) 535 kvmppc_complete_mmio_load(vcpu, run); 536 vcpu->mmio_needed = 0; 537 } else if (vcpu->arch.dcr_needed) { 538 if (!vcpu->arch.dcr_is_write) 539 kvmppc_complete_dcr_load(vcpu, run); 540 vcpu->arch.dcr_needed = 0; 541 } else if (vcpu->arch.osi_needed) { 542 u64 *gprs = run->osi.gprs; 543 int i; 544 545 for (i = 0; i < 32; i++) 546 kvmppc_set_gpr(vcpu, i, gprs[i]); 547 vcpu->arch.osi_needed = 0; 548 } else if (vcpu->arch.hcall_needed) { 549 int i; 550 551 kvmppc_set_gpr(vcpu, 3, run->papr_hcall.ret); 552 for (i = 0; i < 9; ++i) 553 kvmppc_set_gpr(vcpu, 4 + i, run->papr_hcall.args[i]); 554 vcpu->arch.hcall_needed = 0; 555 } 556 557 kvmppc_core_deliver_interrupts(vcpu); 558 559 r = kvmppc_vcpu_run(run, vcpu); 560 561 if (vcpu->sigset_active) 562 sigprocmask(SIG_SETMASK, &sigsaved, NULL); 563 564 return r; 565 } 566 567 int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq) 568 { 569 if (irq->irq == KVM_INTERRUPT_UNSET) { 570 kvmppc_core_dequeue_external(vcpu, irq); 571 return 0; 572 } 573 574 kvmppc_core_queue_external(vcpu, irq); 575 576 if (waitqueue_active(vcpu->arch.wqp)) { 577 wake_up_interruptible(vcpu->arch.wqp); 578 vcpu->stat.halt_wakeup++; 579 } else if (vcpu->cpu != -1) { 580 smp_send_reschedule(vcpu->cpu); 581 } 582 583 return 0; 584 } 585 586 static int kvm_vcpu_ioctl_enable_cap(struct kvm_vcpu *vcpu, 587 struct kvm_enable_cap *cap) 588 { 589 int r; 590 591 if (cap->flags) 592 return -EINVAL; 593 594 switch (cap->cap) { 595 case KVM_CAP_PPC_OSI: 596 r = 0; 597 vcpu->arch.osi_enabled = true; 598 break; 599 case KVM_CAP_PPC_PAPR: 600 r = 0; 601 vcpu->arch.papr_enabled = true; 602 break; 603 default: 604 r = -EINVAL; 605 break; 606 } 607 608 if (!r) 609 r = kvmppc_sanity_check(vcpu); 610 611 return r; 612 } 613 614 int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu, 615 struct kvm_mp_state *mp_state) 616 { 617 return -EINVAL; 618 } 619 620 int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, 621 struct kvm_mp_state *mp_state) 622 { 623 return -EINVAL; 624 } 625 626 long kvm_arch_vcpu_ioctl(struct file *filp, 627 unsigned int ioctl, unsigned long arg) 628 { 629 struct kvm_vcpu *vcpu = filp->private_data; 630 void __user *argp = (void __user *)arg; 631 long r; 632 633 switch (ioctl) { 634 case KVM_INTERRUPT: { 635 struct kvm_interrupt irq; 636 r = -EFAULT; 637 if (copy_from_user(&irq, argp, sizeof(irq))) 638 goto out; 639 r = kvm_vcpu_ioctl_interrupt(vcpu, &irq); 640 goto out; 641 } 642 643 case KVM_ENABLE_CAP: 644 { 645 struct kvm_enable_cap cap; 646 r = -EFAULT; 647 if (copy_from_user(&cap, argp, sizeof(cap))) 648 goto out; 649 r = kvm_vcpu_ioctl_enable_cap(vcpu, &cap); 650 break; 651 } 652 default: 653 r = -EINVAL; 654 } 655 656 out: 657 return r; 658 } 659 660 static int kvm_vm_ioctl_get_pvinfo(struct kvm_ppc_pvinfo *pvinfo) 661 { 662 u32 inst_lis = 0x3c000000; 663 u32 inst_ori = 0x60000000; 664 u32 inst_nop = 0x60000000; 665 u32 inst_sc = 0x44000002; 666 u32 inst_imm_mask = 0xffff; 667 668 /* 669 * The hypercall to get into KVM from within guest context is as 670 * follows: 671 * 672 * lis r0, r0, KVM_SC_MAGIC_R0@h 673 * ori r0, KVM_SC_MAGIC_R0@l 674 * sc 675 * nop 676 */ 677 pvinfo->hcall[0] = inst_lis | ((KVM_SC_MAGIC_R0 >> 16) & inst_imm_mask); 678 pvinfo->hcall[1] = inst_ori | (KVM_SC_MAGIC_R0 & inst_imm_mask); 679 pvinfo->hcall[2] = inst_sc; 680 pvinfo->hcall[3] = inst_nop; 681 682 return 0; 683 } 684 685 long kvm_arch_vm_ioctl(struct file *filp, 686 unsigned int ioctl, unsigned long arg) 687 { 688 void __user *argp = (void __user *)arg; 689 long r; 690 691 switch (ioctl) { 692 case KVM_PPC_GET_PVINFO: { 693 struct kvm_ppc_pvinfo pvinfo; 694 memset(&pvinfo, 0, sizeof(pvinfo)); 695 r = kvm_vm_ioctl_get_pvinfo(&pvinfo); 696 if (copy_to_user(argp, &pvinfo, sizeof(pvinfo))) { 697 r = -EFAULT; 698 goto out; 699 } 700 701 break; 702 } 703 #ifdef CONFIG_KVM_BOOK3S_64_HV 704 case KVM_CREATE_SPAPR_TCE: { 705 struct kvm_create_spapr_tce create_tce; 706 struct kvm *kvm = filp->private_data; 707 708 r = -EFAULT; 709 if (copy_from_user(&create_tce, argp, sizeof(create_tce))) 710 goto out; 711 r = kvm_vm_ioctl_create_spapr_tce(kvm, &create_tce); 712 goto out; 713 } 714 715 case KVM_ALLOCATE_RMA: { 716 struct kvm *kvm = filp->private_data; 717 struct kvm_allocate_rma rma; 718 719 r = kvm_vm_ioctl_allocate_rma(kvm, &rma); 720 if (r >= 0 && copy_to_user(argp, &rma, sizeof(rma))) 721 r = -EFAULT; 722 break; 723 } 724 #endif /* CONFIG_KVM_BOOK3S_64_HV */ 725 726 default: 727 r = -ENOTTY; 728 } 729 730 out: 731 return r; 732 } 733 734 int kvm_arch_init(void *opaque) 735 { 736 return 0; 737 } 738 739 void kvm_arch_exit(void) 740 { 741 } 742