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_PAPR: 212 #endif 213 case KVM_CAP_PPC_UNSET_IRQ: 214 case KVM_CAP_PPC_IRQ_LEVEL: 215 case KVM_CAP_ENABLE_CAP: 216 r = 1; 217 break; 218 #ifndef CONFIG_KVM_BOOK3S_64_HV 219 case KVM_CAP_PPC_PAIRED_SINGLES: 220 case KVM_CAP_PPC_OSI: 221 case KVM_CAP_PPC_GET_PVINFO: 222 r = 1; 223 break; 224 case KVM_CAP_COALESCED_MMIO: 225 r = KVM_COALESCED_MMIO_PAGE_OFFSET; 226 break; 227 #endif 228 #ifdef CONFIG_KVM_BOOK3S_64_HV 229 case KVM_CAP_SPAPR_TCE: 230 r = 1; 231 break; 232 case KVM_CAP_PPC_SMT: 233 r = threads_per_core; 234 break; 235 case KVM_CAP_PPC_RMA: 236 r = 1; 237 /* PPC970 requires an RMA */ 238 if (cpu_has_feature(CPU_FTR_ARCH_201)) 239 r = 2; 240 break; 241 #endif 242 default: 243 r = 0; 244 break; 245 } 246 return r; 247 248 } 249 250 long kvm_arch_dev_ioctl(struct file *filp, 251 unsigned int ioctl, unsigned long arg) 252 { 253 return -EINVAL; 254 } 255 256 int kvm_arch_prepare_memory_region(struct kvm *kvm, 257 struct kvm_memory_slot *memslot, 258 struct kvm_memory_slot old, 259 struct kvm_userspace_memory_region *mem, 260 int user_alloc) 261 { 262 return kvmppc_core_prepare_memory_region(kvm, mem); 263 } 264 265 void kvm_arch_commit_memory_region(struct kvm *kvm, 266 struct kvm_userspace_memory_region *mem, 267 struct kvm_memory_slot old, 268 int user_alloc) 269 { 270 kvmppc_core_commit_memory_region(kvm, mem); 271 } 272 273 274 void kvm_arch_flush_shadow(struct kvm *kvm) 275 { 276 } 277 278 struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id) 279 { 280 struct kvm_vcpu *vcpu; 281 vcpu = kvmppc_core_vcpu_create(kvm, id); 282 vcpu->arch.wqp = &vcpu->wq; 283 if (!IS_ERR(vcpu)) 284 kvmppc_create_vcpu_debugfs(vcpu, id); 285 return vcpu; 286 } 287 288 void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu) 289 { 290 /* Make sure we're not using the vcpu anymore */ 291 hrtimer_cancel(&vcpu->arch.dec_timer); 292 tasklet_kill(&vcpu->arch.tasklet); 293 294 kvmppc_remove_vcpu_debugfs(vcpu); 295 kvmppc_core_vcpu_free(vcpu); 296 } 297 298 void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu) 299 { 300 kvm_arch_vcpu_free(vcpu); 301 } 302 303 int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu) 304 { 305 return kvmppc_core_pending_dec(vcpu); 306 } 307 308 static void kvmppc_decrementer_func(unsigned long data) 309 { 310 struct kvm_vcpu *vcpu = (struct kvm_vcpu *)data; 311 312 kvmppc_core_queue_dec(vcpu); 313 314 if (waitqueue_active(vcpu->arch.wqp)) { 315 wake_up_interruptible(vcpu->arch.wqp); 316 vcpu->stat.halt_wakeup++; 317 } 318 } 319 320 /* 321 * low level hrtimer wake routine. Because this runs in hardirq context 322 * we schedule a tasklet to do the real work. 323 */ 324 enum hrtimer_restart kvmppc_decrementer_wakeup(struct hrtimer *timer) 325 { 326 struct kvm_vcpu *vcpu; 327 328 vcpu = container_of(timer, struct kvm_vcpu, arch.dec_timer); 329 tasklet_schedule(&vcpu->arch.tasklet); 330 331 return HRTIMER_NORESTART; 332 } 333 334 int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu) 335 { 336 hrtimer_init(&vcpu->arch.dec_timer, CLOCK_REALTIME, HRTIMER_MODE_ABS); 337 tasklet_init(&vcpu->arch.tasklet, kvmppc_decrementer_func, (ulong)vcpu); 338 vcpu->arch.dec_timer.function = kvmppc_decrementer_wakeup; 339 vcpu->arch.dec_expires = ~(u64)0; 340 341 #ifdef CONFIG_KVM_EXIT_TIMING 342 mutex_init(&vcpu->arch.exit_timing_lock); 343 #endif 344 345 return 0; 346 } 347 348 void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) 349 { 350 kvmppc_mmu_destroy(vcpu); 351 } 352 353 void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu) 354 { 355 #ifdef CONFIG_BOOKE 356 /* 357 * vrsave (formerly usprg0) isn't used by Linux, but may 358 * be used by the guest. 359 * 360 * On non-booke this is associated with Altivec and 361 * is handled by code in book3s.c. 362 */ 363 mtspr(SPRN_VRSAVE, vcpu->arch.vrsave); 364 #endif 365 kvmppc_core_vcpu_load(vcpu, cpu); 366 vcpu->cpu = smp_processor_id(); 367 } 368 369 void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu) 370 { 371 kvmppc_core_vcpu_put(vcpu); 372 #ifdef CONFIG_BOOKE 373 vcpu->arch.vrsave = mfspr(SPRN_VRSAVE); 374 #endif 375 vcpu->cpu = -1; 376 } 377 378 int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu, 379 struct kvm_guest_debug *dbg) 380 { 381 return -EINVAL; 382 } 383 384 static void kvmppc_complete_dcr_load(struct kvm_vcpu *vcpu, 385 struct kvm_run *run) 386 { 387 kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, run->dcr.data); 388 } 389 390 static void kvmppc_complete_mmio_load(struct kvm_vcpu *vcpu, 391 struct kvm_run *run) 392 { 393 u64 uninitialized_var(gpr); 394 395 if (run->mmio.len > sizeof(gpr)) { 396 printk(KERN_ERR "bad MMIO length: %d\n", run->mmio.len); 397 return; 398 } 399 400 if (vcpu->arch.mmio_is_bigendian) { 401 switch (run->mmio.len) { 402 case 8: gpr = *(u64 *)run->mmio.data; break; 403 case 4: gpr = *(u32 *)run->mmio.data; break; 404 case 2: gpr = *(u16 *)run->mmio.data; break; 405 case 1: gpr = *(u8 *)run->mmio.data; break; 406 } 407 } else { 408 /* Convert BE data from userland back to LE. */ 409 switch (run->mmio.len) { 410 case 4: gpr = ld_le32((u32 *)run->mmio.data); break; 411 case 2: gpr = ld_le16((u16 *)run->mmio.data); break; 412 case 1: gpr = *(u8 *)run->mmio.data; break; 413 } 414 } 415 416 if (vcpu->arch.mmio_sign_extend) { 417 switch (run->mmio.len) { 418 #ifdef CONFIG_PPC64 419 case 4: 420 gpr = (s64)(s32)gpr; 421 break; 422 #endif 423 case 2: 424 gpr = (s64)(s16)gpr; 425 break; 426 case 1: 427 gpr = (s64)(s8)gpr; 428 break; 429 } 430 } 431 432 kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, gpr); 433 434 switch (vcpu->arch.io_gpr & KVM_REG_EXT_MASK) { 435 case KVM_REG_GPR: 436 kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, gpr); 437 break; 438 case KVM_REG_FPR: 439 vcpu->arch.fpr[vcpu->arch.io_gpr & KVM_REG_MASK] = gpr; 440 break; 441 #ifdef CONFIG_PPC_BOOK3S 442 case KVM_REG_QPR: 443 vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_REG_MASK] = gpr; 444 break; 445 case KVM_REG_FQPR: 446 vcpu->arch.fpr[vcpu->arch.io_gpr & KVM_REG_MASK] = gpr; 447 vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_REG_MASK] = gpr; 448 break; 449 #endif 450 default: 451 BUG(); 452 } 453 } 454 455 int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu, 456 unsigned int rt, unsigned int bytes, int is_bigendian) 457 { 458 if (bytes > sizeof(run->mmio.data)) { 459 printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__, 460 run->mmio.len); 461 } 462 463 run->mmio.phys_addr = vcpu->arch.paddr_accessed; 464 run->mmio.len = bytes; 465 run->mmio.is_write = 0; 466 467 vcpu->arch.io_gpr = rt; 468 vcpu->arch.mmio_is_bigendian = is_bigendian; 469 vcpu->mmio_needed = 1; 470 vcpu->mmio_is_write = 0; 471 vcpu->arch.mmio_sign_extend = 0; 472 473 return EMULATE_DO_MMIO; 474 } 475 476 /* Same as above, but sign extends */ 477 int kvmppc_handle_loads(struct kvm_run *run, struct kvm_vcpu *vcpu, 478 unsigned int rt, unsigned int bytes, int is_bigendian) 479 { 480 int r; 481 482 r = kvmppc_handle_load(run, vcpu, rt, bytes, is_bigendian); 483 vcpu->arch.mmio_sign_extend = 1; 484 485 return r; 486 } 487 488 int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu, 489 u64 val, unsigned int bytes, int is_bigendian) 490 { 491 void *data = run->mmio.data; 492 493 if (bytes > sizeof(run->mmio.data)) { 494 printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__, 495 run->mmio.len); 496 } 497 498 run->mmio.phys_addr = vcpu->arch.paddr_accessed; 499 run->mmio.len = bytes; 500 run->mmio.is_write = 1; 501 vcpu->mmio_needed = 1; 502 vcpu->mmio_is_write = 1; 503 504 /* Store the value at the lowest bytes in 'data'. */ 505 if (is_bigendian) { 506 switch (bytes) { 507 case 8: *(u64 *)data = val; break; 508 case 4: *(u32 *)data = val; break; 509 case 2: *(u16 *)data = val; break; 510 case 1: *(u8 *)data = val; break; 511 } 512 } else { 513 /* Store LE value into 'data'. */ 514 switch (bytes) { 515 case 4: st_le32(data, val); break; 516 case 2: st_le16(data, val); break; 517 case 1: *(u8 *)data = val; break; 518 } 519 } 520 521 return EMULATE_DO_MMIO; 522 } 523 524 int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run) 525 { 526 int r; 527 sigset_t sigsaved; 528 529 if (vcpu->sigset_active) 530 sigprocmask(SIG_SETMASK, &vcpu->sigset, &sigsaved); 531 532 if (vcpu->mmio_needed) { 533 if (!vcpu->mmio_is_write) 534 kvmppc_complete_mmio_load(vcpu, run); 535 vcpu->mmio_needed = 0; 536 } else if (vcpu->arch.dcr_needed) { 537 if (!vcpu->arch.dcr_is_write) 538 kvmppc_complete_dcr_load(vcpu, run); 539 vcpu->arch.dcr_needed = 0; 540 } else if (vcpu->arch.osi_needed) { 541 u64 *gprs = run->osi.gprs; 542 int i; 543 544 for (i = 0; i < 32; i++) 545 kvmppc_set_gpr(vcpu, i, gprs[i]); 546 vcpu->arch.osi_needed = 0; 547 } else if (vcpu->arch.hcall_needed) { 548 int i; 549 550 kvmppc_set_gpr(vcpu, 3, run->papr_hcall.ret); 551 for (i = 0; i < 9; ++i) 552 kvmppc_set_gpr(vcpu, 4 + i, run->papr_hcall.args[i]); 553 vcpu->arch.hcall_needed = 0; 554 } 555 556 kvmppc_core_deliver_interrupts(vcpu); 557 558 r = kvmppc_vcpu_run(run, vcpu); 559 560 if (vcpu->sigset_active) 561 sigprocmask(SIG_SETMASK, &sigsaved, NULL); 562 563 return r; 564 } 565 566 int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq) 567 { 568 if (irq->irq == KVM_INTERRUPT_UNSET) { 569 kvmppc_core_dequeue_external(vcpu, irq); 570 return 0; 571 } 572 573 kvmppc_core_queue_external(vcpu, irq); 574 575 if (waitqueue_active(vcpu->arch.wqp)) { 576 wake_up_interruptible(vcpu->arch.wqp); 577 vcpu->stat.halt_wakeup++; 578 } else if (vcpu->cpu != -1) { 579 smp_send_reschedule(vcpu->cpu); 580 } 581 582 return 0; 583 } 584 585 static int kvm_vcpu_ioctl_enable_cap(struct kvm_vcpu *vcpu, 586 struct kvm_enable_cap *cap) 587 { 588 int r; 589 590 if (cap->flags) 591 return -EINVAL; 592 593 switch (cap->cap) { 594 case KVM_CAP_PPC_OSI: 595 r = 0; 596 vcpu->arch.osi_enabled = true; 597 break; 598 case KVM_CAP_PPC_PAPR: 599 r = 0; 600 vcpu->arch.papr_enabled = true; 601 break; 602 default: 603 r = -EINVAL; 604 break; 605 } 606 607 if (!r) 608 r = kvmppc_sanity_check(vcpu); 609 610 return r; 611 } 612 613 int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu, 614 struct kvm_mp_state *mp_state) 615 { 616 return -EINVAL; 617 } 618 619 int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, 620 struct kvm_mp_state *mp_state) 621 { 622 return -EINVAL; 623 } 624 625 long kvm_arch_vcpu_ioctl(struct file *filp, 626 unsigned int ioctl, unsigned long arg) 627 { 628 struct kvm_vcpu *vcpu = filp->private_data; 629 void __user *argp = (void __user *)arg; 630 long r; 631 632 switch (ioctl) { 633 case KVM_INTERRUPT: { 634 struct kvm_interrupt irq; 635 r = -EFAULT; 636 if (copy_from_user(&irq, argp, sizeof(irq))) 637 goto out; 638 r = kvm_vcpu_ioctl_interrupt(vcpu, &irq); 639 goto out; 640 } 641 642 case KVM_ENABLE_CAP: 643 { 644 struct kvm_enable_cap cap; 645 r = -EFAULT; 646 if (copy_from_user(&cap, argp, sizeof(cap))) 647 goto out; 648 r = kvm_vcpu_ioctl_enable_cap(vcpu, &cap); 649 break; 650 } 651 default: 652 r = -EINVAL; 653 } 654 655 out: 656 return r; 657 } 658 659 static int kvm_vm_ioctl_get_pvinfo(struct kvm_ppc_pvinfo *pvinfo) 660 { 661 u32 inst_lis = 0x3c000000; 662 u32 inst_ori = 0x60000000; 663 u32 inst_nop = 0x60000000; 664 u32 inst_sc = 0x44000002; 665 u32 inst_imm_mask = 0xffff; 666 667 /* 668 * The hypercall to get into KVM from within guest context is as 669 * follows: 670 * 671 * lis r0, r0, KVM_SC_MAGIC_R0@h 672 * ori r0, KVM_SC_MAGIC_R0@l 673 * sc 674 * nop 675 */ 676 pvinfo->hcall[0] = inst_lis | ((KVM_SC_MAGIC_R0 >> 16) & inst_imm_mask); 677 pvinfo->hcall[1] = inst_ori | (KVM_SC_MAGIC_R0 & inst_imm_mask); 678 pvinfo->hcall[2] = inst_sc; 679 pvinfo->hcall[3] = inst_nop; 680 681 return 0; 682 } 683 684 long kvm_arch_vm_ioctl(struct file *filp, 685 unsigned int ioctl, unsigned long arg) 686 { 687 void __user *argp = (void __user *)arg; 688 long r; 689 690 switch (ioctl) { 691 case KVM_PPC_GET_PVINFO: { 692 struct kvm_ppc_pvinfo pvinfo; 693 memset(&pvinfo, 0, sizeof(pvinfo)); 694 r = kvm_vm_ioctl_get_pvinfo(&pvinfo); 695 if (copy_to_user(argp, &pvinfo, sizeof(pvinfo))) { 696 r = -EFAULT; 697 goto out; 698 } 699 700 break; 701 } 702 #ifdef CONFIG_KVM_BOOK3S_64_HV 703 case KVM_CREATE_SPAPR_TCE: { 704 struct kvm_create_spapr_tce create_tce; 705 struct kvm *kvm = filp->private_data; 706 707 r = -EFAULT; 708 if (copy_from_user(&create_tce, argp, sizeof(create_tce))) 709 goto out; 710 r = kvm_vm_ioctl_create_spapr_tce(kvm, &create_tce); 711 goto out; 712 } 713 714 case KVM_ALLOCATE_RMA: { 715 struct kvm *kvm = filp->private_data; 716 struct kvm_allocate_rma rma; 717 718 r = kvm_vm_ioctl_allocate_rma(kvm, &rma); 719 if (r >= 0 && copy_to_user(argp, &rma, sizeof(rma))) 720 r = -EFAULT; 721 break; 722 } 723 #endif /* CONFIG_KVM_BOOK3S_64_HV */ 724 725 default: 726 r = -ENOTTY; 727 } 728 729 out: 730 return r; 731 } 732 733 int kvm_arch_init(void *opaque) 734 { 735 return 0; 736 } 737 738 void kvm_arch_exit(void) 739 { 740 } 741