1 /* 2 * Copyright (C) 2009. SUSE Linux Products GmbH. All rights reserved. 3 * 4 * Authors: 5 * Alexander Graf <agraf@suse.de> 6 * Kevin Wolf <mail@kevin-wolf.de> 7 * Paul Mackerras <paulus@samba.org> 8 * 9 * Description: 10 * Functions relating to running KVM on Book 3S processors where 11 * we don't have access to hypervisor mode, and we run the guest 12 * in problem state (user mode). 13 * 14 * This file is derived from arch/powerpc/kvm/44x.c, 15 * by Hollis Blanchard <hollisb@us.ibm.com>. 16 * 17 * This program is free software; you can redistribute it and/or modify 18 * it under the terms of the GNU General Public License, version 2, as 19 * published by the Free Software Foundation. 20 */ 21 22 #include <linux/kvm_host.h> 23 #include <linux/export.h> 24 #include <linux/err.h> 25 #include <linux/slab.h> 26 27 #include <asm/reg.h> 28 #include <asm/cputable.h> 29 #include <asm/cacheflush.h> 30 #include <asm/tlbflush.h> 31 #include <asm/uaccess.h> 32 #include <asm/io.h> 33 #include <asm/kvm_ppc.h> 34 #include <asm/kvm_book3s.h> 35 #include <asm/mmu_context.h> 36 #include <asm/switch_to.h> 37 #include <linux/gfp.h> 38 #include <linux/sched.h> 39 #include <linux/vmalloc.h> 40 #include <linux/highmem.h> 41 42 #include "trace.h" 43 44 /* #define EXIT_DEBUG */ 45 /* #define DEBUG_EXT */ 46 47 static int kvmppc_handle_ext(struct kvm_vcpu *vcpu, unsigned int exit_nr, 48 ulong msr); 49 50 /* Some compatibility defines */ 51 #ifdef CONFIG_PPC_BOOK3S_32 52 #define MSR_USER32 MSR_USER 53 #define MSR_USER64 MSR_USER 54 #define HW_PAGE_SIZE PAGE_SIZE 55 #define __hard_irq_disable local_irq_disable 56 #define __hard_irq_enable local_irq_enable 57 #endif 58 59 void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu) 60 { 61 #ifdef CONFIG_PPC_BOOK3S_64 62 struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu); 63 memcpy(svcpu->slb, to_book3s(vcpu)->slb_shadow, sizeof(svcpu->slb)); 64 memcpy(&get_paca()->shadow_vcpu, to_book3s(vcpu)->shadow_vcpu, 65 sizeof(get_paca()->shadow_vcpu)); 66 svcpu->slb_max = to_book3s(vcpu)->slb_shadow_max; 67 svcpu_put(svcpu); 68 #endif 69 70 #ifdef CONFIG_PPC_BOOK3S_32 71 current->thread.kvm_shadow_vcpu = to_book3s(vcpu)->shadow_vcpu; 72 #endif 73 } 74 75 void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu) 76 { 77 #ifdef CONFIG_PPC_BOOK3S_64 78 struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu); 79 memcpy(to_book3s(vcpu)->slb_shadow, svcpu->slb, sizeof(svcpu->slb)); 80 memcpy(to_book3s(vcpu)->shadow_vcpu, &get_paca()->shadow_vcpu, 81 sizeof(get_paca()->shadow_vcpu)); 82 to_book3s(vcpu)->slb_shadow_max = svcpu->slb_max; 83 svcpu_put(svcpu); 84 #endif 85 86 kvmppc_giveup_ext(vcpu, MSR_FP); 87 kvmppc_giveup_ext(vcpu, MSR_VEC); 88 kvmppc_giveup_ext(vcpu, MSR_VSX); 89 } 90 91 static void kvmppc_recalc_shadow_msr(struct kvm_vcpu *vcpu) 92 { 93 ulong smsr = vcpu->arch.shared->msr; 94 95 /* Guest MSR values */ 96 smsr &= MSR_FE0 | MSR_FE1 | MSR_SF | MSR_SE | MSR_BE | MSR_DE; 97 /* Process MSR values */ 98 smsr |= MSR_ME | MSR_RI | MSR_IR | MSR_DR | MSR_PR | MSR_EE; 99 /* External providers the guest reserved */ 100 smsr |= (vcpu->arch.shared->msr & vcpu->arch.guest_owned_ext); 101 /* 64-bit Process MSR values */ 102 #ifdef CONFIG_PPC_BOOK3S_64 103 smsr |= MSR_ISF | MSR_HV; 104 #endif 105 vcpu->arch.shadow_msr = smsr; 106 } 107 108 void kvmppc_set_msr(struct kvm_vcpu *vcpu, u64 msr) 109 { 110 ulong old_msr = vcpu->arch.shared->msr; 111 112 #ifdef EXIT_DEBUG 113 printk(KERN_INFO "KVM: Set MSR to 0x%llx\n", msr); 114 #endif 115 116 msr &= to_book3s(vcpu)->msr_mask; 117 vcpu->arch.shared->msr = msr; 118 kvmppc_recalc_shadow_msr(vcpu); 119 120 if (msr & MSR_POW) { 121 if (!vcpu->arch.pending_exceptions) { 122 kvm_vcpu_block(vcpu); 123 clear_bit(KVM_REQ_UNHALT, &vcpu->requests); 124 vcpu->stat.halt_wakeup++; 125 126 /* Unset POW bit after we woke up */ 127 msr &= ~MSR_POW; 128 vcpu->arch.shared->msr = msr; 129 } 130 } 131 132 if ((vcpu->arch.shared->msr & (MSR_PR|MSR_IR|MSR_DR)) != 133 (old_msr & (MSR_PR|MSR_IR|MSR_DR))) { 134 kvmppc_mmu_flush_segments(vcpu); 135 kvmppc_mmu_map_segment(vcpu, kvmppc_get_pc(vcpu)); 136 137 /* Preload magic page segment when in kernel mode */ 138 if (!(msr & MSR_PR) && vcpu->arch.magic_page_pa) { 139 struct kvm_vcpu_arch *a = &vcpu->arch; 140 141 if (msr & MSR_DR) 142 kvmppc_mmu_map_segment(vcpu, a->magic_page_ea); 143 else 144 kvmppc_mmu_map_segment(vcpu, a->magic_page_pa); 145 } 146 } 147 148 /* 149 * When switching from 32 to 64-bit, we may have a stale 32-bit 150 * magic page around, we need to flush it. Typically 32-bit magic 151 * page will be instanciated when calling into RTAS. Note: We 152 * assume that such transition only happens while in kernel mode, 153 * ie, we never transition from user 32-bit to kernel 64-bit with 154 * a 32-bit magic page around. 155 */ 156 if (vcpu->arch.magic_page_pa && 157 !(old_msr & MSR_PR) && !(old_msr & MSR_SF) && (msr & MSR_SF)) { 158 /* going from RTAS to normal kernel code */ 159 kvmppc_mmu_pte_flush(vcpu, (uint32_t)vcpu->arch.magic_page_pa, 160 ~0xFFFUL); 161 } 162 163 /* Preload FPU if it's enabled */ 164 if (vcpu->arch.shared->msr & MSR_FP) 165 kvmppc_handle_ext(vcpu, BOOK3S_INTERRUPT_FP_UNAVAIL, MSR_FP); 166 } 167 168 void kvmppc_set_pvr(struct kvm_vcpu *vcpu, u32 pvr) 169 { 170 u32 host_pvr; 171 172 vcpu->arch.hflags &= ~BOOK3S_HFLAG_SLB; 173 vcpu->arch.pvr = pvr; 174 #ifdef CONFIG_PPC_BOOK3S_64 175 if ((pvr >= 0x330000) && (pvr < 0x70330000)) { 176 kvmppc_mmu_book3s_64_init(vcpu); 177 if (!to_book3s(vcpu)->hior_explicit) 178 to_book3s(vcpu)->hior = 0xfff00000; 179 to_book3s(vcpu)->msr_mask = 0xffffffffffffffffULL; 180 vcpu->arch.cpu_type = KVM_CPU_3S_64; 181 } else 182 #endif 183 { 184 kvmppc_mmu_book3s_32_init(vcpu); 185 if (!to_book3s(vcpu)->hior_explicit) 186 to_book3s(vcpu)->hior = 0; 187 to_book3s(vcpu)->msr_mask = 0xffffffffULL; 188 vcpu->arch.cpu_type = KVM_CPU_3S_32; 189 } 190 191 kvmppc_sanity_check(vcpu); 192 193 /* If we are in hypervisor level on 970, we can tell the CPU to 194 * treat DCBZ as 32 bytes store */ 195 vcpu->arch.hflags &= ~BOOK3S_HFLAG_DCBZ32; 196 if (vcpu->arch.mmu.is_dcbz32(vcpu) && (mfmsr() & MSR_HV) && 197 !strcmp(cur_cpu_spec->platform, "ppc970")) 198 vcpu->arch.hflags |= BOOK3S_HFLAG_DCBZ32; 199 200 /* Cell performs badly if MSR_FEx are set. So let's hope nobody 201 really needs them in a VM on Cell and force disable them. */ 202 if (!strcmp(cur_cpu_spec->platform, "ppc-cell-be")) 203 to_book3s(vcpu)->msr_mask &= ~(MSR_FE0 | MSR_FE1); 204 205 #ifdef CONFIG_PPC_BOOK3S_32 206 /* 32 bit Book3S always has 32 byte dcbz */ 207 vcpu->arch.hflags |= BOOK3S_HFLAG_DCBZ32; 208 #endif 209 210 /* On some CPUs we can execute paired single operations natively */ 211 asm ( "mfpvr %0" : "=r"(host_pvr)); 212 switch (host_pvr) { 213 case 0x00080200: /* lonestar 2.0 */ 214 case 0x00088202: /* lonestar 2.2 */ 215 case 0x70000100: /* gekko 1.0 */ 216 case 0x00080100: /* gekko 2.0 */ 217 case 0x00083203: /* gekko 2.3a */ 218 case 0x00083213: /* gekko 2.3b */ 219 case 0x00083204: /* gekko 2.4 */ 220 case 0x00083214: /* gekko 2.4e (8SE) - retail HW2 */ 221 case 0x00087200: /* broadway */ 222 vcpu->arch.hflags |= BOOK3S_HFLAG_NATIVE_PS; 223 /* Enable HID2.PSE - in case we need it later */ 224 mtspr(SPRN_HID2_GEKKO, mfspr(SPRN_HID2_GEKKO) | (1 << 29)); 225 } 226 } 227 228 /* Book3s_32 CPUs always have 32 bytes cache line size, which Linux assumes. To 229 * make Book3s_32 Linux work on Book3s_64, we have to make sure we trap dcbz to 230 * emulate 32 bytes dcbz length. 231 * 232 * The Book3s_64 inventors also realized this case and implemented a special bit 233 * in the HID5 register, which is a hypervisor ressource. Thus we can't use it. 234 * 235 * My approach here is to patch the dcbz instruction on executing pages. 236 */ 237 static void kvmppc_patch_dcbz(struct kvm_vcpu *vcpu, struct kvmppc_pte *pte) 238 { 239 struct page *hpage; 240 u64 hpage_offset; 241 u32 *page; 242 int i; 243 244 hpage = gfn_to_page(vcpu->kvm, pte->raddr >> PAGE_SHIFT); 245 if (is_error_page(hpage)) { 246 kvm_release_page_clean(hpage); 247 return; 248 } 249 250 hpage_offset = pte->raddr & ~PAGE_MASK; 251 hpage_offset &= ~0xFFFULL; 252 hpage_offset /= 4; 253 254 get_page(hpage); 255 page = kmap_atomic(hpage); 256 257 /* patch dcbz into reserved instruction, so we trap */ 258 for (i=hpage_offset; i < hpage_offset + (HW_PAGE_SIZE / 4); i++) 259 if ((page[i] & 0xff0007ff) == INS_DCBZ) 260 page[i] &= 0xfffffff7; 261 262 kunmap_atomic(page); 263 put_page(hpage); 264 } 265 266 static int kvmppc_visible_gfn(struct kvm_vcpu *vcpu, gfn_t gfn) 267 { 268 ulong mp_pa = vcpu->arch.magic_page_pa; 269 270 if (!(vcpu->arch.shared->msr & MSR_SF)) 271 mp_pa = (uint32_t)mp_pa; 272 273 if (unlikely(mp_pa) && 274 unlikely((mp_pa & KVM_PAM) >> PAGE_SHIFT == gfn)) { 275 return 1; 276 } 277 278 return kvm_is_visible_gfn(vcpu->kvm, gfn); 279 } 280 281 int kvmppc_handle_pagefault(struct kvm_run *run, struct kvm_vcpu *vcpu, 282 ulong eaddr, int vec) 283 { 284 bool data = (vec == BOOK3S_INTERRUPT_DATA_STORAGE); 285 int r = RESUME_GUEST; 286 int relocated; 287 int page_found = 0; 288 struct kvmppc_pte pte; 289 bool is_mmio = false; 290 bool dr = (vcpu->arch.shared->msr & MSR_DR) ? true : false; 291 bool ir = (vcpu->arch.shared->msr & MSR_IR) ? true : false; 292 u64 vsid; 293 294 relocated = data ? dr : ir; 295 296 /* Resolve real address if translation turned on */ 297 if (relocated) { 298 page_found = vcpu->arch.mmu.xlate(vcpu, eaddr, &pte, data); 299 } else { 300 pte.may_execute = true; 301 pte.may_read = true; 302 pte.may_write = true; 303 pte.raddr = eaddr & KVM_PAM; 304 pte.eaddr = eaddr; 305 pte.vpage = eaddr >> 12; 306 } 307 308 switch (vcpu->arch.shared->msr & (MSR_DR|MSR_IR)) { 309 case 0: 310 pte.vpage |= ((u64)VSID_REAL << (SID_SHIFT - 12)); 311 break; 312 case MSR_DR: 313 case MSR_IR: 314 vcpu->arch.mmu.esid_to_vsid(vcpu, eaddr >> SID_SHIFT, &vsid); 315 316 if ((vcpu->arch.shared->msr & (MSR_DR|MSR_IR)) == MSR_DR) 317 pte.vpage |= ((u64)VSID_REAL_DR << (SID_SHIFT - 12)); 318 else 319 pte.vpage |= ((u64)VSID_REAL_IR << (SID_SHIFT - 12)); 320 pte.vpage |= vsid; 321 322 if (vsid == -1) 323 page_found = -EINVAL; 324 break; 325 } 326 327 if (vcpu->arch.mmu.is_dcbz32(vcpu) && 328 (!(vcpu->arch.hflags & BOOK3S_HFLAG_DCBZ32))) { 329 /* 330 * If we do the dcbz hack, we have to NX on every execution, 331 * so we can patch the executing code. This renders our guest 332 * NX-less. 333 */ 334 pte.may_execute = !data; 335 } 336 337 if (page_found == -ENOENT) { 338 /* Page not found in guest PTE entries */ 339 struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu); 340 vcpu->arch.shared->dar = kvmppc_get_fault_dar(vcpu); 341 vcpu->arch.shared->dsisr = svcpu->fault_dsisr; 342 vcpu->arch.shared->msr |= 343 (svcpu->shadow_srr1 & 0x00000000f8000000ULL); 344 svcpu_put(svcpu); 345 kvmppc_book3s_queue_irqprio(vcpu, vec); 346 } else if (page_found == -EPERM) { 347 /* Storage protection */ 348 struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu); 349 vcpu->arch.shared->dar = kvmppc_get_fault_dar(vcpu); 350 vcpu->arch.shared->dsisr = svcpu->fault_dsisr & ~DSISR_NOHPTE; 351 vcpu->arch.shared->dsisr |= DSISR_PROTFAULT; 352 vcpu->arch.shared->msr |= 353 svcpu->shadow_srr1 & 0x00000000f8000000ULL; 354 svcpu_put(svcpu); 355 kvmppc_book3s_queue_irqprio(vcpu, vec); 356 } else if (page_found == -EINVAL) { 357 /* Page not found in guest SLB */ 358 vcpu->arch.shared->dar = kvmppc_get_fault_dar(vcpu); 359 kvmppc_book3s_queue_irqprio(vcpu, vec + 0x80); 360 } else if (!is_mmio && 361 kvmppc_visible_gfn(vcpu, pte.raddr >> PAGE_SHIFT)) { 362 /* The guest's PTE is not mapped yet. Map on the host */ 363 kvmppc_mmu_map_page(vcpu, &pte); 364 if (data) 365 vcpu->stat.sp_storage++; 366 else if (vcpu->arch.mmu.is_dcbz32(vcpu) && 367 (!(vcpu->arch.hflags & BOOK3S_HFLAG_DCBZ32))) 368 kvmppc_patch_dcbz(vcpu, &pte); 369 } else { 370 /* MMIO */ 371 vcpu->stat.mmio_exits++; 372 vcpu->arch.paddr_accessed = pte.raddr; 373 vcpu->arch.vaddr_accessed = pte.eaddr; 374 r = kvmppc_emulate_mmio(run, vcpu); 375 if ( r == RESUME_HOST_NV ) 376 r = RESUME_HOST; 377 } 378 379 return r; 380 } 381 382 static inline int get_fpr_index(int i) 383 { 384 #ifdef CONFIG_VSX 385 i *= 2; 386 #endif 387 return i; 388 } 389 390 /* Give up external provider (FPU, Altivec, VSX) */ 391 void kvmppc_giveup_ext(struct kvm_vcpu *vcpu, ulong msr) 392 { 393 struct thread_struct *t = ¤t->thread; 394 u64 *vcpu_fpr = vcpu->arch.fpr; 395 #ifdef CONFIG_VSX 396 u64 *vcpu_vsx = vcpu->arch.vsr; 397 #endif 398 u64 *thread_fpr = (u64*)t->fpr; 399 int i; 400 401 if (!(vcpu->arch.guest_owned_ext & msr)) 402 return; 403 404 #ifdef DEBUG_EXT 405 printk(KERN_INFO "Giving up ext 0x%lx\n", msr); 406 #endif 407 408 switch (msr) { 409 case MSR_FP: 410 giveup_fpu(current); 411 for (i = 0; i < ARRAY_SIZE(vcpu->arch.fpr); i++) 412 vcpu_fpr[i] = thread_fpr[get_fpr_index(i)]; 413 414 vcpu->arch.fpscr = t->fpscr.val; 415 break; 416 case MSR_VEC: 417 #ifdef CONFIG_ALTIVEC 418 giveup_altivec(current); 419 memcpy(vcpu->arch.vr, t->vr, sizeof(vcpu->arch.vr)); 420 vcpu->arch.vscr = t->vscr; 421 #endif 422 break; 423 case MSR_VSX: 424 #ifdef CONFIG_VSX 425 __giveup_vsx(current); 426 for (i = 0; i < ARRAY_SIZE(vcpu->arch.vsr); i++) 427 vcpu_vsx[i] = thread_fpr[get_fpr_index(i) + 1]; 428 #endif 429 break; 430 default: 431 BUG(); 432 } 433 434 vcpu->arch.guest_owned_ext &= ~msr; 435 current->thread.regs->msr &= ~msr; 436 kvmppc_recalc_shadow_msr(vcpu); 437 } 438 439 static int kvmppc_read_inst(struct kvm_vcpu *vcpu) 440 { 441 ulong srr0 = kvmppc_get_pc(vcpu); 442 u32 last_inst = kvmppc_get_last_inst(vcpu); 443 int ret; 444 445 ret = kvmppc_ld(vcpu, &srr0, sizeof(u32), &last_inst, false); 446 if (ret == -ENOENT) { 447 ulong msr = vcpu->arch.shared->msr; 448 449 msr = kvmppc_set_field(msr, 33, 33, 1); 450 msr = kvmppc_set_field(msr, 34, 36, 0); 451 vcpu->arch.shared->msr = kvmppc_set_field(msr, 42, 47, 0); 452 kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_INST_STORAGE); 453 return EMULATE_AGAIN; 454 } 455 456 return EMULATE_DONE; 457 } 458 459 static int kvmppc_check_ext(struct kvm_vcpu *vcpu, unsigned int exit_nr) 460 { 461 462 /* Need to do paired single emulation? */ 463 if (!(vcpu->arch.hflags & BOOK3S_HFLAG_PAIRED_SINGLE)) 464 return EMULATE_DONE; 465 466 /* Read out the instruction */ 467 if (kvmppc_read_inst(vcpu) == EMULATE_DONE) 468 /* Need to emulate */ 469 return EMULATE_FAIL; 470 471 return EMULATE_AGAIN; 472 } 473 474 /* Handle external providers (FPU, Altivec, VSX) */ 475 static int kvmppc_handle_ext(struct kvm_vcpu *vcpu, unsigned int exit_nr, 476 ulong msr) 477 { 478 struct thread_struct *t = ¤t->thread; 479 u64 *vcpu_fpr = vcpu->arch.fpr; 480 #ifdef CONFIG_VSX 481 u64 *vcpu_vsx = vcpu->arch.vsr; 482 #endif 483 u64 *thread_fpr = (u64*)t->fpr; 484 int i; 485 486 /* When we have paired singles, we emulate in software */ 487 if (vcpu->arch.hflags & BOOK3S_HFLAG_PAIRED_SINGLE) 488 return RESUME_GUEST; 489 490 if (!(vcpu->arch.shared->msr & msr)) { 491 kvmppc_book3s_queue_irqprio(vcpu, exit_nr); 492 return RESUME_GUEST; 493 } 494 495 /* We already own the ext */ 496 if (vcpu->arch.guest_owned_ext & msr) { 497 return RESUME_GUEST; 498 } 499 500 #ifdef DEBUG_EXT 501 printk(KERN_INFO "Loading up ext 0x%lx\n", msr); 502 #endif 503 504 current->thread.regs->msr |= msr; 505 506 switch (msr) { 507 case MSR_FP: 508 for (i = 0; i < ARRAY_SIZE(vcpu->arch.fpr); i++) 509 thread_fpr[get_fpr_index(i)] = vcpu_fpr[i]; 510 511 t->fpscr.val = vcpu->arch.fpscr; 512 t->fpexc_mode = 0; 513 kvmppc_load_up_fpu(); 514 break; 515 case MSR_VEC: 516 #ifdef CONFIG_ALTIVEC 517 memcpy(t->vr, vcpu->arch.vr, sizeof(vcpu->arch.vr)); 518 t->vscr = vcpu->arch.vscr; 519 t->vrsave = -1; 520 kvmppc_load_up_altivec(); 521 #endif 522 break; 523 case MSR_VSX: 524 #ifdef CONFIG_VSX 525 for (i = 0; i < ARRAY_SIZE(vcpu->arch.vsr); i++) 526 thread_fpr[get_fpr_index(i) + 1] = vcpu_vsx[i]; 527 kvmppc_load_up_vsx(); 528 #endif 529 break; 530 default: 531 BUG(); 532 } 533 534 vcpu->arch.guest_owned_ext |= msr; 535 536 kvmppc_recalc_shadow_msr(vcpu); 537 538 return RESUME_GUEST; 539 } 540 541 int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu, 542 unsigned int exit_nr) 543 { 544 int r = RESUME_HOST; 545 546 vcpu->stat.sum_exits++; 547 548 run->exit_reason = KVM_EXIT_UNKNOWN; 549 run->ready_for_interrupt_injection = 1; 550 551 /* We get here with MSR.EE=0, so enable it to be a nice citizen */ 552 __hard_irq_enable(); 553 554 trace_kvm_book3s_exit(exit_nr, vcpu); 555 preempt_enable(); 556 kvm_resched(vcpu); 557 switch (exit_nr) { 558 case BOOK3S_INTERRUPT_INST_STORAGE: 559 { 560 struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu); 561 ulong shadow_srr1 = svcpu->shadow_srr1; 562 vcpu->stat.pf_instruc++; 563 564 #ifdef CONFIG_PPC_BOOK3S_32 565 /* We set segments as unused segments when invalidating them. So 566 * treat the respective fault as segment fault. */ 567 if (svcpu->sr[kvmppc_get_pc(vcpu) >> SID_SHIFT] == SR_INVALID) { 568 kvmppc_mmu_map_segment(vcpu, kvmppc_get_pc(vcpu)); 569 r = RESUME_GUEST; 570 svcpu_put(svcpu); 571 break; 572 } 573 #endif 574 svcpu_put(svcpu); 575 576 /* only care about PTEG not found errors, but leave NX alone */ 577 if (shadow_srr1 & 0x40000000) { 578 r = kvmppc_handle_pagefault(run, vcpu, kvmppc_get_pc(vcpu), exit_nr); 579 vcpu->stat.sp_instruc++; 580 } else if (vcpu->arch.mmu.is_dcbz32(vcpu) && 581 (!(vcpu->arch.hflags & BOOK3S_HFLAG_DCBZ32))) { 582 /* 583 * XXX If we do the dcbz hack we use the NX bit to flush&patch the page, 584 * so we can't use the NX bit inside the guest. Let's cross our fingers, 585 * that no guest that needs the dcbz hack does NX. 586 */ 587 kvmppc_mmu_pte_flush(vcpu, kvmppc_get_pc(vcpu), ~0xFFFUL); 588 r = RESUME_GUEST; 589 } else { 590 vcpu->arch.shared->msr |= shadow_srr1 & 0x58000000; 591 kvmppc_book3s_queue_irqprio(vcpu, exit_nr); 592 r = RESUME_GUEST; 593 } 594 break; 595 } 596 case BOOK3S_INTERRUPT_DATA_STORAGE: 597 { 598 ulong dar = kvmppc_get_fault_dar(vcpu); 599 struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu); 600 u32 fault_dsisr = svcpu->fault_dsisr; 601 vcpu->stat.pf_storage++; 602 603 #ifdef CONFIG_PPC_BOOK3S_32 604 /* We set segments as unused segments when invalidating them. So 605 * treat the respective fault as segment fault. */ 606 if ((svcpu->sr[dar >> SID_SHIFT]) == SR_INVALID) { 607 kvmppc_mmu_map_segment(vcpu, dar); 608 r = RESUME_GUEST; 609 svcpu_put(svcpu); 610 break; 611 } 612 #endif 613 svcpu_put(svcpu); 614 615 /* The only case we need to handle is missing shadow PTEs */ 616 if (fault_dsisr & DSISR_NOHPTE) { 617 r = kvmppc_handle_pagefault(run, vcpu, dar, exit_nr); 618 } else { 619 vcpu->arch.shared->dar = dar; 620 vcpu->arch.shared->dsisr = fault_dsisr; 621 kvmppc_book3s_queue_irqprio(vcpu, exit_nr); 622 r = RESUME_GUEST; 623 } 624 break; 625 } 626 case BOOK3S_INTERRUPT_DATA_SEGMENT: 627 if (kvmppc_mmu_map_segment(vcpu, kvmppc_get_fault_dar(vcpu)) < 0) { 628 vcpu->arch.shared->dar = kvmppc_get_fault_dar(vcpu); 629 kvmppc_book3s_queue_irqprio(vcpu, 630 BOOK3S_INTERRUPT_DATA_SEGMENT); 631 } 632 r = RESUME_GUEST; 633 break; 634 case BOOK3S_INTERRUPT_INST_SEGMENT: 635 if (kvmppc_mmu_map_segment(vcpu, kvmppc_get_pc(vcpu)) < 0) { 636 kvmppc_book3s_queue_irqprio(vcpu, 637 BOOK3S_INTERRUPT_INST_SEGMENT); 638 } 639 r = RESUME_GUEST; 640 break; 641 /* We're good on these - the host merely wanted to get our attention */ 642 case BOOK3S_INTERRUPT_DECREMENTER: 643 case BOOK3S_INTERRUPT_HV_DECREMENTER: 644 vcpu->stat.dec_exits++; 645 r = RESUME_GUEST; 646 break; 647 case BOOK3S_INTERRUPT_EXTERNAL: 648 case BOOK3S_INTERRUPT_EXTERNAL_LEVEL: 649 case BOOK3S_INTERRUPT_EXTERNAL_HV: 650 vcpu->stat.ext_intr_exits++; 651 r = RESUME_GUEST; 652 break; 653 case BOOK3S_INTERRUPT_PERFMON: 654 r = RESUME_GUEST; 655 break; 656 case BOOK3S_INTERRUPT_PROGRAM: 657 case BOOK3S_INTERRUPT_H_EMUL_ASSIST: 658 { 659 enum emulation_result er; 660 struct kvmppc_book3s_shadow_vcpu *svcpu; 661 ulong flags; 662 663 program_interrupt: 664 svcpu = svcpu_get(vcpu); 665 flags = svcpu->shadow_srr1 & 0x1f0000ull; 666 svcpu_put(svcpu); 667 668 if (vcpu->arch.shared->msr & MSR_PR) { 669 #ifdef EXIT_DEBUG 670 printk(KERN_INFO "Userspace triggered 0x700 exception at 0x%lx (0x%x)\n", kvmppc_get_pc(vcpu), kvmppc_get_last_inst(vcpu)); 671 #endif 672 if ((kvmppc_get_last_inst(vcpu) & 0xff0007ff) != 673 (INS_DCBZ & 0xfffffff7)) { 674 kvmppc_core_queue_program(vcpu, flags); 675 r = RESUME_GUEST; 676 break; 677 } 678 } 679 680 vcpu->stat.emulated_inst_exits++; 681 er = kvmppc_emulate_instruction(run, vcpu); 682 switch (er) { 683 case EMULATE_DONE: 684 r = RESUME_GUEST_NV; 685 break; 686 case EMULATE_AGAIN: 687 r = RESUME_GUEST; 688 break; 689 case EMULATE_FAIL: 690 printk(KERN_CRIT "%s: emulation at %lx failed (%08x)\n", 691 __func__, kvmppc_get_pc(vcpu), kvmppc_get_last_inst(vcpu)); 692 kvmppc_core_queue_program(vcpu, flags); 693 r = RESUME_GUEST; 694 break; 695 case EMULATE_DO_MMIO: 696 run->exit_reason = KVM_EXIT_MMIO; 697 r = RESUME_HOST_NV; 698 break; 699 default: 700 BUG(); 701 } 702 break; 703 } 704 case BOOK3S_INTERRUPT_SYSCALL: 705 if (vcpu->arch.papr_enabled && 706 (kvmppc_get_last_inst(vcpu) == 0x44000022) && 707 !(vcpu->arch.shared->msr & MSR_PR)) { 708 /* SC 1 papr hypercalls */ 709 ulong cmd = kvmppc_get_gpr(vcpu, 3); 710 int i; 711 712 #ifdef CONFIG_KVM_BOOK3S_64_PR 713 if (kvmppc_h_pr(vcpu, cmd) == EMULATE_DONE) { 714 r = RESUME_GUEST; 715 break; 716 } 717 #endif 718 719 run->papr_hcall.nr = cmd; 720 for (i = 0; i < 9; ++i) { 721 ulong gpr = kvmppc_get_gpr(vcpu, 4 + i); 722 run->papr_hcall.args[i] = gpr; 723 } 724 run->exit_reason = KVM_EXIT_PAPR_HCALL; 725 vcpu->arch.hcall_needed = 1; 726 r = RESUME_HOST; 727 } else if (vcpu->arch.osi_enabled && 728 (((u32)kvmppc_get_gpr(vcpu, 3)) == OSI_SC_MAGIC_R3) && 729 (((u32)kvmppc_get_gpr(vcpu, 4)) == OSI_SC_MAGIC_R4)) { 730 /* MOL hypercalls */ 731 u64 *gprs = run->osi.gprs; 732 int i; 733 734 run->exit_reason = KVM_EXIT_OSI; 735 for (i = 0; i < 32; i++) 736 gprs[i] = kvmppc_get_gpr(vcpu, i); 737 vcpu->arch.osi_needed = 1; 738 r = RESUME_HOST_NV; 739 } else if (!(vcpu->arch.shared->msr & MSR_PR) && 740 (((u32)kvmppc_get_gpr(vcpu, 0)) == KVM_SC_MAGIC_R0)) { 741 /* KVM PV hypercalls */ 742 kvmppc_set_gpr(vcpu, 3, kvmppc_kvm_pv(vcpu)); 743 r = RESUME_GUEST; 744 } else { 745 /* Guest syscalls */ 746 vcpu->stat.syscall_exits++; 747 kvmppc_book3s_queue_irqprio(vcpu, exit_nr); 748 r = RESUME_GUEST; 749 } 750 break; 751 case BOOK3S_INTERRUPT_FP_UNAVAIL: 752 case BOOK3S_INTERRUPT_ALTIVEC: 753 case BOOK3S_INTERRUPT_VSX: 754 { 755 int ext_msr = 0; 756 757 switch (exit_nr) { 758 case BOOK3S_INTERRUPT_FP_UNAVAIL: ext_msr = MSR_FP; break; 759 case BOOK3S_INTERRUPT_ALTIVEC: ext_msr = MSR_VEC; break; 760 case BOOK3S_INTERRUPT_VSX: ext_msr = MSR_VSX; break; 761 } 762 763 switch (kvmppc_check_ext(vcpu, exit_nr)) { 764 case EMULATE_DONE: 765 /* everything ok - let's enable the ext */ 766 r = kvmppc_handle_ext(vcpu, exit_nr, ext_msr); 767 break; 768 case EMULATE_FAIL: 769 /* we need to emulate this instruction */ 770 goto program_interrupt; 771 break; 772 default: 773 /* nothing to worry about - go again */ 774 break; 775 } 776 break; 777 } 778 case BOOK3S_INTERRUPT_ALIGNMENT: 779 if (kvmppc_read_inst(vcpu) == EMULATE_DONE) { 780 vcpu->arch.shared->dsisr = kvmppc_alignment_dsisr(vcpu, 781 kvmppc_get_last_inst(vcpu)); 782 vcpu->arch.shared->dar = kvmppc_alignment_dar(vcpu, 783 kvmppc_get_last_inst(vcpu)); 784 kvmppc_book3s_queue_irqprio(vcpu, exit_nr); 785 } 786 r = RESUME_GUEST; 787 break; 788 case BOOK3S_INTERRUPT_MACHINE_CHECK: 789 case BOOK3S_INTERRUPT_TRACE: 790 kvmppc_book3s_queue_irqprio(vcpu, exit_nr); 791 r = RESUME_GUEST; 792 break; 793 default: 794 { 795 struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu); 796 ulong shadow_srr1 = svcpu->shadow_srr1; 797 svcpu_put(svcpu); 798 /* Ugh - bork here! What did we get? */ 799 printk(KERN_EMERG "exit_nr=0x%x | pc=0x%lx | msr=0x%lx\n", 800 exit_nr, kvmppc_get_pc(vcpu), shadow_srr1); 801 r = RESUME_HOST; 802 BUG(); 803 break; 804 } 805 } 806 807 preempt_disable(); 808 if (!(r & RESUME_HOST)) { 809 /* To avoid clobbering exit_reason, only check for signals if 810 * we aren't already exiting to userspace for some other 811 * reason. */ 812 813 /* 814 * Interrupts could be timers for the guest which we have to 815 * inject again, so let's postpone them until we're in the guest 816 * and if we really did time things so badly, then we just exit 817 * again due to a host external interrupt. 818 */ 819 __hard_irq_disable(); 820 if (signal_pending(current)) { 821 __hard_irq_enable(); 822 #ifdef EXIT_DEBUG 823 printk(KERN_EMERG "KVM: Going back to host\n"); 824 #endif 825 vcpu->stat.signal_exits++; 826 run->exit_reason = KVM_EXIT_INTR; 827 r = -EINTR; 828 } else { 829 /* In case an interrupt came in that was triggered 830 * from userspace (like DEC), we need to check what 831 * to inject now! */ 832 kvmppc_core_prepare_to_enter(vcpu); 833 } 834 } 835 836 trace_kvm_book3s_reenter(r, vcpu); 837 838 return r; 839 } 840 841 int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu, 842 struct kvm_sregs *sregs) 843 { 844 struct kvmppc_vcpu_book3s *vcpu3s = to_book3s(vcpu); 845 int i; 846 847 sregs->pvr = vcpu->arch.pvr; 848 849 sregs->u.s.sdr1 = to_book3s(vcpu)->sdr1; 850 if (vcpu->arch.hflags & BOOK3S_HFLAG_SLB) { 851 for (i = 0; i < 64; i++) { 852 sregs->u.s.ppc64.slb[i].slbe = vcpu->arch.slb[i].orige | i; 853 sregs->u.s.ppc64.slb[i].slbv = vcpu->arch.slb[i].origv; 854 } 855 } else { 856 for (i = 0; i < 16; i++) 857 sregs->u.s.ppc32.sr[i] = vcpu->arch.shared->sr[i]; 858 859 for (i = 0; i < 8; i++) { 860 sregs->u.s.ppc32.ibat[i] = vcpu3s->ibat[i].raw; 861 sregs->u.s.ppc32.dbat[i] = vcpu3s->dbat[i].raw; 862 } 863 } 864 865 return 0; 866 } 867 868 int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, 869 struct kvm_sregs *sregs) 870 { 871 struct kvmppc_vcpu_book3s *vcpu3s = to_book3s(vcpu); 872 int i; 873 874 kvmppc_set_pvr(vcpu, sregs->pvr); 875 876 vcpu3s->sdr1 = sregs->u.s.sdr1; 877 if (vcpu->arch.hflags & BOOK3S_HFLAG_SLB) { 878 for (i = 0; i < 64; i++) { 879 vcpu->arch.mmu.slbmte(vcpu, sregs->u.s.ppc64.slb[i].slbv, 880 sregs->u.s.ppc64.slb[i].slbe); 881 } 882 } else { 883 for (i = 0; i < 16; i++) { 884 vcpu->arch.mmu.mtsrin(vcpu, i, sregs->u.s.ppc32.sr[i]); 885 } 886 for (i = 0; i < 8; i++) { 887 kvmppc_set_bat(vcpu, &(vcpu3s->ibat[i]), false, 888 (u32)sregs->u.s.ppc32.ibat[i]); 889 kvmppc_set_bat(vcpu, &(vcpu3s->ibat[i]), true, 890 (u32)(sregs->u.s.ppc32.ibat[i] >> 32)); 891 kvmppc_set_bat(vcpu, &(vcpu3s->dbat[i]), false, 892 (u32)sregs->u.s.ppc32.dbat[i]); 893 kvmppc_set_bat(vcpu, &(vcpu3s->dbat[i]), true, 894 (u32)(sregs->u.s.ppc32.dbat[i] >> 32)); 895 } 896 } 897 898 /* Flush the MMU after messing with the segments */ 899 kvmppc_mmu_pte_flush(vcpu, 0, 0); 900 901 return 0; 902 } 903 904 int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg) 905 { 906 int r = -EINVAL; 907 908 switch (reg->id) { 909 case KVM_REG_PPC_HIOR: 910 r = copy_to_user((u64 __user *)(long)reg->addr, 911 &to_book3s(vcpu)->hior, sizeof(u64)); 912 break; 913 default: 914 break; 915 } 916 917 return r; 918 } 919 920 int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg) 921 { 922 int r = -EINVAL; 923 924 switch (reg->id) { 925 case KVM_REG_PPC_HIOR: 926 r = copy_from_user(&to_book3s(vcpu)->hior, 927 (u64 __user *)(long)reg->addr, sizeof(u64)); 928 if (!r) 929 to_book3s(vcpu)->hior_explicit = true; 930 break; 931 default: 932 break; 933 } 934 935 return r; 936 } 937 938 int kvmppc_core_check_processor_compat(void) 939 { 940 return 0; 941 } 942 943 struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm, unsigned int id) 944 { 945 struct kvmppc_vcpu_book3s *vcpu_book3s; 946 struct kvm_vcpu *vcpu; 947 int err = -ENOMEM; 948 unsigned long p; 949 950 vcpu_book3s = vzalloc(sizeof(struct kvmppc_vcpu_book3s)); 951 if (!vcpu_book3s) 952 goto out; 953 954 vcpu_book3s->shadow_vcpu = (struct kvmppc_book3s_shadow_vcpu *) 955 kzalloc(sizeof(*vcpu_book3s->shadow_vcpu), GFP_KERNEL); 956 if (!vcpu_book3s->shadow_vcpu) 957 goto free_vcpu; 958 959 vcpu = &vcpu_book3s->vcpu; 960 err = kvm_vcpu_init(vcpu, kvm, id); 961 if (err) 962 goto free_shadow_vcpu; 963 964 p = __get_free_page(GFP_KERNEL|__GFP_ZERO); 965 /* the real shared page fills the last 4k of our page */ 966 vcpu->arch.shared = (void*)(p + PAGE_SIZE - 4096); 967 if (!p) 968 goto uninit_vcpu; 969 970 #ifdef CONFIG_PPC_BOOK3S_64 971 /* default to book3s_64 (970fx) */ 972 vcpu->arch.pvr = 0x3C0301; 973 #else 974 /* default to book3s_32 (750) */ 975 vcpu->arch.pvr = 0x84202; 976 #endif 977 kvmppc_set_pvr(vcpu, vcpu->arch.pvr); 978 vcpu->arch.slb_nr = 64; 979 980 vcpu->arch.shadow_msr = MSR_USER64; 981 982 err = kvmppc_mmu_init(vcpu); 983 if (err < 0) 984 goto uninit_vcpu; 985 986 return vcpu; 987 988 uninit_vcpu: 989 kvm_vcpu_uninit(vcpu); 990 free_shadow_vcpu: 991 kfree(vcpu_book3s->shadow_vcpu); 992 free_vcpu: 993 vfree(vcpu_book3s); 994 out: 995 return ERR_PTR(err); 996 } 997 998 void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu) 999 { 1000 struct kvmppc_vcpu_book3s *vcpu_book3s = to_book3s(vcpu); 1001 1002 free_page((unsigned long)vcpu->arch.shared & PAGE_MASK); 1003 kvm_vcpu_uninit(vcpu); 1004 kfree(vcpu_book3s->shadow_vcpu); 1005 vfree(vcpu_book3s); 1006 } 1007 1008 int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu) 1009 { 1010 int ret; 1011 double fpr[32][TS_FPRWIDTH]; 1012 unsigned int fpscr; 1013 int fpexc_mode; 1014 #ifdef CONFIG_ALTIVEC 1015 vector128 vr[32]; 1016 vector128 vscr; 1017 unsigned long uninitialized_var(vrsave); 1018 int used_vr; 1019 #endif 1020 #ifdef CONFIG_VSX 1021 int used_vsr; 1022 #endif 1023 ulong ext_msr; 1024 1025 preempt_disable(); 1026 1027 /* Check if we can run the vcpu at all */ 1028 if (!vcpu->arch.sane) { 1029 kvm_run->exit_reason = KVM_EXIT_INTERNAL_ERROR; 1030 ret = -EINVAL; 1031 goto out; 1032 } 1033 1034 kvmppc_core_prepare_to_enter(vcpu); 1035 1036 /* 1037 * Interrupts could be timers for the guest which we have to inject 1038 * again, so let's postpone them until we're in the guest and if we 1039 * really did time things so badly, then we just exit again due to 1040 * a host external interrupt. 1041 */ 1042 __hard_irq_disable(); 1043 1044 /* No need to go into the guest when all we do is going out */ 1045 if (signal_pending(current)) { 1046 __hard_irq_enable(); 1047 kvm_run->exit_reason = KVM_EXIT_INTR; 1048 ret = -EINTR; 1049 goto out; 1050 } 1051 1052 /* Save FPU state in stack */ 1053 if (current->thread.regs->msr & MSR_FP) 1054 giveup_fpu(current); 1055 memcpy(fpr, current->thread.fpr, sizeof(current->thread.fpr)); 1056 fpscr = current->thread.fpscr.val; 1057 fpexc_mode = current->thread.fpexc_mode; 1058 1059 #ifdef CONFIG_ALTIVEC 1060 /* Save Altivec state in stack */ 1061 used_vr = current->thread.used_vr; 1062 if (used_vr) { 1063 if (current->thread.regs->msr & MSR_VEC) 1064 giveup_altivec(current); 1065 memcpy(vr, current->thread.vr, sizeof(current->thread.vr)); 1066 vscr = current->thread.vscr; 1067 vrsave = current->thread.vrsave; 1068 } 1069 #endif 1070 1071 #ifdef CONFIG_VSX 1072 /* Save VSX state in stack */ 1073 used_vsr = current->thread.used_vsr; 1074 if (used_vsr && (current->thread.regs->msr & MSR_VSX)) 1075 __giveup_vsx(current); 1076 #endif 1077 1078 /* Remember the MSR with disabled extensions */ 1079 ext_msr = current->thread.regs->msr; 1080 1081 /* Preload FPU if it's enabled */ 1082 if (vcpu->arch.shared->msr & MSR_FP) 1083 kvmppc_handle_ext(vcpu, BOOK3S_INTERRUPT_FP_UNAVAIL, MSR_FP); 1084 1085 kvm_guest_enter(); 1086 1087 ret = __kvmppc_vcpu_run(kvm_run, vcpu); 1088 1089 kvm_guest_exit(); 1090 1091 current->thread.regs->msr = ext_msr; 1092 1093 /* Make sure we save the guest FPU/Altivec/VSX state */ 1094 kvmppc_giveup_ext(vcpu, MSR_FP); 1095 kvmppc_giveup_ext(vcpu, MSR_VEC); 1096 kvmppc_giveup_ext(vcpu, MSR_VSX); 1097 1098 /* Restore FPU state from stack */ 1099 memcpy(current->thread.fpr, fpr, sizeof(current->thread.fpr)); 1100 current->thread.fpscr.val = fpscr; 1101 current->thread.fpexc_mode = fpexc_mode; 1102 1103 #ifdef CONFIG_ALTIVEC 1104 /* Restore Altivec state from stack */ 1105 if (used_vr && current->thread.used_vr) { 1106 memcpy(current->thread.vr, vr, sizeof(current->thread.vr)); 1107 current->thread.vscr = vscr; 1108 current->thread.vrsave = vrsave; 1109 } 1110 current->thread.used_vr = used_vr; 1111 #endif 1112 1113 #ifdef CONFIG_VSX 1114 current->thread.used_vsr = used_vsr; 1115 #endif 1116 1117 out: 1118 preempt_enable(); 1119 return ret; 1120 } 1121 1122 /* 1123 * Get (and clear) the dirty memory log for a memory slot. 1124 */ 1125 int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, 1126 struct kvm_dirty_log *log) 1127 { 1128 struct kvm_memory_slot *memslot; 1129 struct kvm_vcpu *vcpu; 1130 ulong ga, ga_end; 1131 int is_dirty = 0; 1132 int r; 1133 unsigned long n; 1134 1135 mutex_lock(&kvm->slots_lock); 1136 1137 r = kvm_get_dirty_log(kvm, log, &is_dirty); 1138 if (r) 1139 goto out; 1140 1141 /* If nothing is dirty, don't bother messing with page tables. */ 1142 if (is_dirty) { 1143 memslot = id_to_memslot(kvm->memslots, log->slot); 1144 1145 ga = memslot->base_gfn << PAGE_SHIFT; 1146 ga_end = ga + (memslot->npages << PAGE_SHIFT); 1147 1148 kvm_for_each_vcpu(n, vcpu, kvm) 1149 kvmppc_mmu_pte_pflush(vcpu, ga, ga_end); 1150 1151 n = kvm_dirty_bitmap_bytes(memslot); 1152 memset(memslot->dirty_bitmap, 0, n); 1153 } 1154 1155 r = 0; 1156 out: 1157 mutex_unlock(&kvm->slots_lock); 1158 return r; 1159 } 1160 1161 #ifdef CONFIG_PPC64 1162 int kvm_vm_ioctl_get_smmu_info(struct kvm *kvm, struct kvm_ppc_smmu_info *info) 1163 { 1164 /* No flags */ 1165 info->flags = 0; 1166 1167 /* SLB is always 64 entries */ 1168 info->slb_size = 64; 1169 1170 /* Standard 4k base page size segment */ 1171 info->sps[0].page_shift = 12; 1172 info->sps[0].slb_enc = 0; 1173 info->sps[0].enc[0].page_shift = 12; 1174 info->sps[0].enc[0].pte_enc = 0; 1175 1176 /* Standard 16M large page size segment */ 1177 info->sps[1].page_shift = 24; 1178 info->sps[1].slb_enc = SLB_VSID_L; 1179 info->sps[1].enc[0].page_shift = 24; 1180 info->sps[1].enc[0].pte_enc = 0; 1181 1182 return 0; 1183 } 1184 #endif /* CONFIG_PPC64 */ 1185 1186 int kvmppc_core_prepare_memory_region(struct kvm *kvm, 1187 struct kvm_userspace_memory_region *mem) 1188 { 1189 return 0; 1190 } 1191 1192 void kvmppc_core_commit_memory_region(struct kvm *kvm, 1193 struct kvm_userspace_memory_region *mem) 1194 { 1195 } 1196 1197 int kvmppc_core_init_vm(struct kvm *kvm) 1198 { 1199 #ifdef CONFIG_PPC64 1200 INIT_LIST_HEAD(&kvm->arch.spapr_tce_tables); 1201 #endif 1202 1203 return 0; 1204 } 1205 1206 void kvmppc_core_destroy_vm(struct kvm *kvm) 1207 { 1208 #ifdef CONFIG_PPC64 1209 WARN_ON(!list_empty(&kvm->arch.spapr_tce_tables)); 1210 #endif 1211 } 1212 1213 static int kvmppc_book3s_init(void) 1214 { 1215 int r; 1216 1217 r = kvm_init(NULL, sizeof(struct kvmppc_vcpu_book3s), 0, 1218 THIS_MODULE); 1219 1220 if (r) 1221 return r; 1222 1223 r = kvmppc_mmu_hpte_sysinit(); 1224 1225 return r; 1226 } 1227 1228 static void kvmppc_book3s_exit(void) 1229 { 1230 kvmppc_mmu_hpte_sysexit(); 1231 kvm_exit(); 1232 } 1233 1234 module_init(kvmppc_book3s_init); 1235 module_exit(kvmppc_book3s_exit); 1236