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 return; 247 248 hpage_offset = pte->raddr & ~PAGE_MASK; 249 hpage_offset &= ~0xFFFULL; 250 hpage_offset /= 4; 251 252 get_page(hpage); 253 page = kmap_atomic(hpage); 254 255 /* patch dcbz into reserved instruction, so we trap */ 256 for (i=hpage_offset; i < hpage_offset + (HW_PAGE_SIZE / 4); i++) 257 if ((page[i] & 0xff0007ff) == INS_DCBZ) 258 page[i] &= 0xfffffff7; 259 260 kunmap_atomic(page); 261 put_page(hpage); 262 } 263 264 static int kvmppc_visible_gfn(struct kvm_vcpu *vcpu, gfn_t gfn) 265 { 266 ulong mp_pa = vcpu->arch.magic_page_pa; 267 268 if (!(vcpu->arch.shared->msr & MSR_SF)) 269 mp_pa = (uint32_t)mp_pa; 270 271 if (unlikely(mp_pa) && 272 unlikely((mp_pa & KVM_PAM) >> PAGE_SHIFT == gfn)) { 273 return 1; 274 } 275 276 return kvm_is_visible_gfn(vcpu->kvm, gfn); 277 } 278 279 int kvmppc_handle_pagefault(struct kvm_run *run, struct kvm_vcpu *vcpu, 280 ulong eaddr, int vec) 281 { 282 bool data = (vec == BOOK3S_INTERRUPT_DATA_STORAGE); 283 int r = RESUME_GUEST; 284 int relocated; 285 int page_found = 0; 286 struct kvmppc_pte pte; 287 bool is_mmio = false; 288 bool dr = (vcpu->arch.shared->msr & MSR_DR) ? true : false; 289 bool ir = (vcpu->arch.shared->msr & MSR_IR) ? true : false; 290 u64 vsid; 291 292 relocated = data ? dr : ir; 293 294 /* Resolve real address if translation turned on */ 295 if (relocated) { 296 page_found = vcpu->arch.mmu.xlate(vcpu, eaddr, &pte, data); 297 } else { 298 pte.may_execute = true; 299 pte.may_read = true; 300 pte.may_write = true; 301 pte.raddr = eaddr & KVM_PAM; 302 pte.eaddr = eaddr; 303 pte.vpage = eaddr >> 12; 304 } 305 306 switch (vcpu->arch.shared->msr & (MSR_DR|MSR_IR)) { 307 case 0: 308 pte.vpage |= ((u64)VSID_REAL << (SID_SHIFT - 12)); 309 break; 310 case MSR_DR: 311 case MSR_IR: 312 vcpu->arch.mmu.esid_to_vsid(vcpu, eaddr >> SID_SHIFT, &vsid); 313 314 if ((vcpu->arch.shared->msr & (MSR_DR|MSR_IR)) == MSR_DR) 315 pte.vpage |= ((u64)VSID_REAL_DR << (SID_SHIFT - 12)); 316 else 317 pte.vpage |= ((u64)VSID_REAL_IR << (SID_SHIFT - 12)); 318 pte.vpage |= vsid; 319 320 if (vsid == -1) 321 page_found = -EINVAL; 322 break; 323 } 324 325 if (vcpu->arch.mmu.is_dcbz32(vcpu) && 326 (!(vcpu->arch.hflags & BOOK3S_HFLAG_DCBZ32))) { 327 /* 328 * If we do the dcbz hack, we have to NX on every execution, 329 * so we can patch the executing code. This renders our guest 330 * NX-less. 331 */ 332 pte.may_execute = !data; 333 } 334 335 if (page_found == -ENOENT) { 336 /* Page not found in guest PTE entries */ 337 struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu); 338 vcpu->arch.shared->dar = kvmppc_get_fault_dar(vcpu); 339 vcpu->arch.shared->dsisr = svcpu->fault_dsisr; 340 vcpu->arch.shared->msr |= 341 (svcpu->shadow_srr1 & 0x00000000f8000000ULL); 342 svcpu_put(svcpu); 343 kvmppc_book3s_queue_irqprio(vcpu, vec); 344 } else if (page_found == -EPERM) { 345 /* Storage protection */ 346 struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu); 347 vcpu->arch.shared->dar = kvmppc_get_fault_dar(vcpu); 348 vcpu->arch.shared->dsisr = svcpu->fault_dsisr & ~DSISR_NOHPTE; 349 vcpu->arch.shared->dsisr |= DSISR_PROTFAULT; 350 vcpu->arch.shared->msr |= 351 svcpu->shadow_srr1 & 0x00000000f8000000ULL; 352 svcpu_put(svcpu); 353 kvmppc_book3s_queue_irqprio(vcpu, vec); 354 } else if (page_found == -EINVAL) { 355 /* Page not found in guest SLB */ 356 vcpu->arch.shared->dar = kvmppc_get_fault_dar(vcpu); 357 kvmppc_book3s_queue_irqprio(vcpu, vec + 0x80); 358 } else if (!is_mmio && 359 kvmppc_visible_gfn(vcpu, pte.raddr >> PAGE_SHIFT)) { 360 /* The guest's PTE is not mapped yet. Map on the host */ 361 kvmppc_mmu_map_page(vcpu, &pte); 362 if (data) 363 vcpu->stat.sp_storage++; 364 else if (vcpu->arch.mmu.is_dcbz32(vcpu) && 365 (!(vcpu->arch.hflags & BOOK3S_HFLAG_DCBZ32))) 366 kvmppc_patch_dcbz(vcpu, &pte); 367 } else { 368 /* MMIO */ 369 vcpu->stat.mmio_exits++; 370 vcpu->arch.paddr_accessed = pte.raddr; 371 vcpu->arch.vaddr_accessed = pte.eaddr; 372 r = kvmppc_emulate_mmio(run, vcpu); 373 if ( r == RESUME_HOST_NV ) 374 r = RESUME_HOST; 375 } 376 377 return r; 378 } 379 380 static inline int get_fpr_index(int i) 381 { 382 #ifdef CONFIG_VSX 383 i *= 2; 384 #endif 385 return i; 386 } 387 388 /* Give up external provider (FPU, Altivec, VSX) */ 389 void kvmppc_giveup_ext(struct kvm_vcpu *vcpu, ulong msr) 390 { 391 struct thread_struct *t = ¤t->thread; 392 u64 *vcpu_fpr = vcpu->arch.fpr; 393 #ifdef CONFIG_VSX 394 u64 *vcpu_vsx = vcpu->arch.vsr; 395 #endif 396 u64 *thread_fpr = (u64*)t->fpr; 397 int i; 398 399 if (!(vcpu->arch.guest_owned_ext & msr)) 400 return; 401 402 #ifdef DEBUG_EXT 403 printk(KERN_INFO "Giving up ext 0x%lx\n", msr); 404 #endif 405 406 switch (msr) { 407 case MSR_FP: 408 giveup_fpu(current); 409 for (i = 0; i < ARRAY_SIZE(vcpu->arch.fpr); i++) 410 vcpu_fpr[i] = thread_fpr[get_fpr_index(i)]; 411 412 vcpu->arch.fpscr = t->fpscr.val; 413 break; 414 case MSR_VEC: 415 #ifdef CONFIG_ALTIVEC 416 giveup_altivec(current); 417 memcpy(vcpu->arch.vr, t->vr, sizeof(vcpu->arch.vr)); 418 vcpu->arch.vscr = t->vscr; 419 #endif 420 break; 421 case MSR_VSX: 422 #ifdef CONFIG_VSX 423 __giveup_vsx(current); 424 for (i = 0; i < ARRAY_SIZE(vcpu->arch.vsr); i++) 425 vcpu_vsx[i] = thread_fpr[get_fpr_index(i) + 1]; 426 #endif 427 break; 428 default: 429 BUG(); 430 } 431 432 vcpu->arch.guest_owned_ext &= ~msr; 433 current->thread.regs->msr &= ~msr; 434 kvmppc_recalc_shadow_msr(vcpu); 435 } 436 437 static int kvmppc_read_inst(struct kvm_vcpu *vcpu) 438 { 439 ulong srr0 = kvmppc_get_pc(vcpu); 440 u32 last_inst = kvmppc_get_last_inst(vcpu); 441 int ret; 442 443 ret = kvmppc_ld(vcpu, &srr0, sizeof(u32), &last_inst, false); 444 if (ret == -ENOENT) { 445 ulong msr = vcpu->arch.shared->msr; 446 447 msr = kvmppc_set_field(msr, 33, 33, 1); 448 msr = kvmppc_set_field(msr, 34, 36, 0); 449 vcpu->arch.shared->msr = kvmppc_set_field(msr, 42, 47, 0); 450 kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_INST_STORAGE); 451 return EMULATE_AGAIN; 452 } 453 454 return EMULATE_DONE; 455 } 456 457 static int kvmppc_check_ext(struct kvm_vcpu *vcpu, unsigned int exit_nr) 458 { 459 460 /* Need to do paired single emulation? */ 461 if (!(vcpu->arch.hflags & BOOK3S_HFLAG_PAIRED_SINGLE)) 462 return EMULATE_DONE; 463 464 /* Read out the instruction */ 465 if (kvmppc_read_inst(vcpu) == EMULATE_DONE) 466 /* Need to emulate */ 467 return EMULATE_FAIL; 468 469 return EMULATE_AGAIN; 470 } 471 472 /* Handle external providers (FPU, Altivec, VSX) */ 473 static int kvmppc_handle_ext(struct kvm_vcpu *vcpu, unsigned int exit_nr, 474 ulong msr) 475 { 476 struct thread_struct *t = ¤t->thread; 477 u64 *vcpu_fpr = vcpu->arch.fpr; 478 #ifdef CONFIG_VSX 479 u64 *vcpu_vsx = vcpu->arch.vsr; 480 #endif 481 u64 *thread_fpr = (u64*)t->fpr; 482 int i; 483 484 /* When we have paired singles, we emulate in software */ 485 if (vcpu->arch.hflags & BOOK3S_HFLAG_PAIRED_SINGLE) 486 return RESUME_GUEST; 487 488 if (!(vcpu->arch.shared->msr & msr)) { 489 kvmppc_book3s_queue_irqprio(vcpu, exit_nr); 490 return RESUME_GUEST; 491 } 492 493 /* We already own the ext */ 494 if (vcpu->arch.guest_owned_ext & msr) { 495 return RESUME_GUEST; 496 } 497 498 #ifdef DEBUG_EXT 499 printk(KERN_INFO "Loading up ext 0x%lx\n", msr); 500 #endif 501 502 current->thread.regs->msr |= msr; 503 504 switch (msr) { 505 case MSR_FP: 506 for (i = 0; i < ARRAY_SIZE(vcpu->arch.fpr); i++) 507 thread_fpr[get_fpr_index(i)] = vcpu_fpr[i]; 508 509 t->fpscr.val = vcpu->arch.fpscr; 510 t->fpexc_mode = 0; 511 kvmppc_load_up_fpu(); 512 break; 513 case MSR_VEC: 514 #ifdef CONFIG_ALTIVEC 515 memcpy(t->vr, vcpu->arch.vr, sizeof(vcpu->arch.vr)); 516 t->vscr = vcpu->arch.vscr; 517 t->vrsave = -1; 518 kvmppc_load_up_altivec(); 519 #endif 520 break; 521 case MSR_VSX: 522 #ifdef CONFIG_VSX 523 for (i = 0; i < ARRAY_SIZE(vcpu->arch.vsr); i++) 524 thread_fpr[get_fpr_index(i) + 1] = vcpu_vsx[i]; 525 kvmppc_load_up_vsx(); 526 #endif 527 break; 528 default: 529 BUG(); 530 } 531 532 vcpu->arch.guest_owned_ext |= msr; 533 534 kvmppc_recalc_shadow_msr(vcpu); 535 536 return RESUME_GUEST; 537 } 538 539 int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu, 540 unsigned int exit_nr) 541 { 542 int r = RESUME_HOST; 543 544 vcpu->stat.sum_exits++; 545 546 run->exit_reason = KVM_EXIT_UNKNOWN; 547 run->ready_for_interrupt_injection = 1; 548 549 /* We get here with MSR.EE=0, so enable it to be a nice citizen */ 550 __hard_irq_enable(); 551 552 trace_kvm_book3s_exit(exit_nr, vcpu); 553 preempt_enable(); 554 kvm_resched(vcpu); 555 switch (exit_nr) { 556 case BOOK3S_INTERRUPT_INST_STORAGE: 557 { 558 struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu); 559 ulong shadow_srr1 = svcpu->shadow_srr1; 560 vcpu->stat.pf_instruc++; 561 562 #ifdef CONFIG_PPC_BOOK3S_32 563 /* We set segments as unused segments when invalidating them. So 564 * treat the respective fault as segment fault. */ 565 if (svcpu->sr[kvmppc_get_pc(vcpu) >> SID_SHIFT] == SR_INVALID) { 566 kvmppc_mmu_map_segment(vcpu, kvmppc_get_pc(vcpu)); 567 r = RESUME_GUEST; 568 svcpu_put(svcpu); 569 break; 570 } 571 #endif 572 svcpu_put(svcpu); 573 574 /* only care about PTEG not found errors, but leave NX alone */ 575 if (shadow_srr1 & 0x40000000) { 576 r = kvmppc_handle_pagefault(run, vcpu, kvmppc_get_pc(vcpu), exit_nr); 577 vcpu->stat.sp_instruc++; 578 } else if (vcpu->arch.mmu.is_dcbz32(vcpu) && 579 (!(vcpu->arch.hflags & BOOK3S_HFLAG_DCBZ32))) { 580 /* 581 * XXX If we do the dcbz hack we use the NX bit to flush&patch the page, 582 * so we can't use the NX bit inside the guest. Let's cross our fingers, 583 * that no guest that needs the dcbz hack does NX. 584 */ 585 kvmppc_mmu_pte_flush(vcpu, kvmppc_get_pc(vcpu), ~0xFFFUL); 586 r = RESUME_GUEST; 587 } else { 588 vcpu->arch.shared->msr |= shadow_srr1 & 0x58000000; 589 kvmppc_book3s_queue_irqprio(vcpu, exit_nr); 590 r = RESUME_GUEST; 591 } 592 break; 593 } 594 case BOOK3S_INTERRUPT_DATA_STORAGE: 595 { 596 ulong dar = kvmppc_get_fault_dar(vcpu); 597 struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu); 598 u32 fault_dsisr = svcpu->fault_dsisr; 599 vcpu->stat.pf_storage++; 600 601 #ifdef CONFIG_PPC_BOOK3S_32 602 /* We set segments as unused segments when invalidating them. So 603 * treat the respective fault as segment fault. */ 604 if ((svcpu->sr[dar >> SID_SHIFT]) == SR_INVALID) { 605 kvmppc_mmu_map_segment(vcpu, dar); 606 r = RESUME_GUEST; 607 svcpu_put(svcpu); 608 break; 609 } 610 #endif 611 svcpu_put(svcpu); 612 613 /* The only case we need to handle is missing shadow PTEs */ 614 if (fault_dsisr & DSISR_NOHPTE) { 615 r = kvmppc_handle_pagefault(run, vcpu, dar, exit_nr); 616 } else { 617 vcpu->arch.shared->dar = dar; 618 vcpu->arch.shared->dsisr = fault_dsisr; 619 kvmppc_book3s_queue_irqprio(vcpu, exit_nr); 620 r = RESUME_GUEST; 621 } 622 break; 623 } 624 case BOOK3S_INTERRUPT_DATA_SEGMENT: 625 if (kvmppc_mmu_map_segment(vcpu, kvmppc_get_fault_dar(vcpu)) < 0) { 626 vcpu->arch.shared->dar = kvmppc_get_fault_dar(vcpu); 627 kvmppc_book3s_queue_irqprio(vcpu, 628 BOOK3S_INTERRUPT_DATA_SEGMENT); 629 } 630 r = RESUME_GUEST; 631 break; 632 case BOOK3S_INTERRUPT_INST_SEGMENT: 633 if (kvmppc_mmu_map_segment(vcpu, kvmppc_get_pc(vcpu)) < 0) { 634 kvmppc_book3s_queue_irqprio(vcpu, 635 BOOK3S_INTERRUPT_INST_SEGMENT); 636 } 637 r = RESUME_GUEST; 638 break; 639 /* We're good on these - the host merely wanted to get our attention */ 640 case BOOK3S_INTERRUPT_DECREMENTER: 641 case BOOK3S_INTERRUPT_HV_DECREMENTER: 642 vcpu->stat.dec_exits++; 643 r = RESUME_GUEST; 644 break; 645 case BOOK3S_INTERRUPT_EXTERNAL: 646 case BOOK3S_INTERRUPT_EXTERNAL_LEVEL: 647 case BOOK3S_INTERRUPT_EXTERNAL_HV: 648 vcpu->stat.ext_intr_exits++; 649 r = RESUME_GUEST; 650 break; 651 case BOOK3S_INTERRUPT_PERFMON: 652 r = RESUME_GUEST; 653 break; 654 case BOOK3S_INTERRUPT_PROGRAM: 655 case BOOK3S_INTERRUPT_H_EMUL_ASSIST: 656 { 657 enum emulation_result er; 658 struct kvmppc_book3s_shadow_vcpu *svcpu; 659 ulong flags; 660 661 program_interrupt: 662 svcpu = svcpu_get(vcpu); 663 flags = svcpu->shadow_srr1 & 0x1f0000ull; 664 svcpu_put(svcpu); 665 666 if (vcpu->arch.shared->msr & MSR_PR) { 667 #ifdef EXIT_DEBUG 668 printk(KERN_INFO "Userspace triggered 0x700 exception at 0x%lx (0x%x)\n", kvmppc_get_pc(vcpu), kvmppc_get_last_inst(vcpu)); 669 #endif 670 if ((kvmppc_get_last_inst(vcpu) & 0xff0007ff) != 671 (INS_DCBZ & 0xfffffff7)) { 672 kvmppc_core_queue_program(vcpu, flags); 673 r = RESUME_GUEST; 674 break; 675 } 676 } 677 678 vcpu->stat.emulated_inst_exits++; 679 er = kvmppc_emulate_instruction(run, vcpu); 680 switch (er) { 681 case EMULATE_DONE: 682 r = RESUME_GUEST_NV; 683 break; 684 case EMULATE_AGAIN: 685 r = RESUME_GUEST; 686 break; 687 case EMULATE_FAIL: 688 printk(KERN_CRIT "%s: emulation at %lx failed (%08x)\n", 689 __func__, kvmppc_get_pc(vcpu), kvmppc_get_last_inst(vcpu)); 690 kvmppc_core_queue_program(vcpu, flags); 691 r = RESUME_GUEST; 692 break; 693 case EMULATE_DO_MMIO: 694 run->exit_reason = KVM_EXIT_MMIO; 695 r = RESUME_HOST_NV; 696 break; 697 default: 698 BUG(); 699 } 700 break; 701 } 702 case BOOK3S_INTERRUPT_SYSCALL: 703 if (vcpu->arch.papr_enabled && 704 (kvmppc_get_last_inst(vcpu) == 0x44000022) && 705 !(vcpu->arch.shared->msr & MSR_PR)) { 706 /* SC 1 papr hypercalls */ 707 ulong cmd = kvmppc_get_gpr(vcpu, 3); 708 int i; 709 710 #ifdef CONFIG_KVM_BOOK3S_64_PR 711 if (kvmppc_h_pr(vcpu, cmd) == EMULATE_DONE) { 712 r = RESUME_GUEST; 713 break; 714 } 715 #endif 716 717 run->papr_hcall.nr = cmd; 718 for (i = 0; i < 9; ++i) { 719 ulong gpr = kvmppc_get_gpr(vcpu, 4 + i); 720 run->papr_hcall.args[i] = gpr; 721 } 722 run->exit_reason = KVM_EXIT_PAPR_HCALL; 723 vcpu->arch.hcall_needed = 1; 724 r = RESUME_HOST; 725 } else if (vcpu->arch.osi_enabled && 726 (((u32)kvmppc_get_gpr(vcpu, 3)) == OSI_SC_MAGIC_R3) && 727 (((u32)kvmppc_get_gpr(vcpu, 4)) == OSI_SC_MAGIC_R4)) { 728 /* MOL hypercalls */ 729 u64 *gprs = run->osi.gprs; 730 int i; 731 732 run->exit_reason = KVM_EXIT_OSI; 733 for (i = 0; i < 32; i++) 734 gprs[i] = kvmppc_get_gpr(vcpu, i); 735 vcpu->arch.osi_needed = 1; 736 r = RESUME_HOST_NV; 737 } else if (!(vcpu->arch.shared->msr & MSR_PR) && 738 (((u32)kvmppc_get_gpr(vcpu, 0)) == KVM_SC_MAGIC_R0)) { 739 /* KVM PV hypercalls */ 740 kvmppc_set_gpr(vcpu, 3, kvmppc_kvm_pv(vcpu)); 741 r = RESUME_GUEST; 742 } else { 743 /* Guest syscalls */ 744 vcpu->stat.syscall_exits++; 745 kvmppc_book3s_queue_irqprio(vcpu, exit_nr); 746 r = RESUME_GUEST; 747 } 748 break; 749 case BOOK3S_INTERRUPT_FP_UNAVAIL: 750 case BOOK3S_INTERRUPT_ALTIVEC: 751 case BOOK3S_INTERRUPT_VSX: 752 { 753 int ext_msr = 0; 754 755 switch (exit_nr) { 756 case BOOK3S_INTERRUPT_FP_UNAVAIL: ext_msr = MSR_FP; break; 757 case BOOK3S_INTERRUPT_ALTIVEC: ext_msr = MSR_VEC; break; 758 case BOOK3S_INTERRUPT_VSX: ext_msr = MSR_VSX; break; 759 } 760 761 switch (kvmppc_check_ext(vcpu, exit_nr)) { 762 case EMULATE_DONE: 763 /* everything ok - let's enable the ext */ 764 r = kvmppc_handle_ext(vcpu, exit_nr, ext_msr); 765 break; 766 case EMULATE_FAIL: 767 /* we need to emulate this instruction */ 768 goto program_interrupt; 769 break; 770 default: 771 /* nothing to worry about - go again */ 772 break; 773 } 774 break; 775 } 776 case BOOK3S_INTERRUPT_ALIGNMENT: 777 if (kvmppc_read_inst(vcpu) == EMULATE_DONE) { 778 vcpu->arch.shared->dsisr = kvmppc_alignment_dsisr(vcpu, 779 kvmppc_get_last_inst(vcpu)); 780 vcpu->arch.shared->dar = kvmppc_alignment_dar(vcpu, 781 kvmppc_get_last_inst(vcpu)); 782 kvmppc_book3s_queue_irqprio(vcpu, exit_nr); 783 } 784 r = RESUME_GUEST; 785 break; 786 case BOOK3S_INTERRUPT_MACHINE_CHECK: 787 case BOOK3S_INTERRUPT_TRACE: 788 kvmppc_book3s_queue_irqprio(vcpu, exit_nr); 789 r = RESUME_GUEST; 790 break; 791 default: 792 { 793 struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu); 794 ulong shadow_srr1 = svcpu->shadow_srr1; 795 svcpu_put(svcpu); 796 /* Ugh - bork here! What did we get? */ 797 printk(KERN_EMERG "exit_nr=0x%x | pc=0x%lx | msr=0x%lx\n", 798 exit_nr, kvmppc_get_pc(vcpu), shadow_srr1); 799 r = RESUME_HOST; 800 BUG(); 801 break; 802 } 803 } 804 805 preempt_disable(); 806 if (!(r & RESUME_HOST)) { 807 /* To avoid clobbering exit_reason, only check for signals if 808 * we aren't already exiting to userspace for some other 809 * reason. */ 810 811 /* 812 * Interrupts could be timers for the guest which we have to 813 * inject again, so let's postpone them until we're in the guest 814 * and if we really did time things so badly, then we just exit 815 * again due to a host external interrupt. 816 */ 817 __hard_irq_disable(); 818 if (signal_pending(current)) { 819 __hard_irq_enable(); 820 #ifdef EXIT_DEBUG 821 printk(KERN_EMERG "KVM: Going back to host\n"); 822 #endif 823 vcpu->stat.signal_exits++; 824 run->exit_reason = KVM_EXIT_INTR; 825 r = -EINTR; 826 } else { 827 /* In case an interrupt came in that was triggered 828 * from userspace (like DEC), we need to check what 829 * to inject now! */ 830 kvmppc_core_prepare_to_enter(vcpu); 831 } 832 } 833 834 trace_kvm_book3s_reenter(r, vcpu); 835 836 return r; 837 } 838 839 int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu, 840 struct kvm_sregs *sregs) 841 { 842 struct kvmppc_vcpu_book3s *vcpu3s = to_book3s(vcpu); 843 int i; 844 845 sregs->pvr = vcpu->arch.pvr; 846 847 sregs->u.s.sdr1 = to_book3s(vcpu)->sdr1; 848 if (vcpu->arch.hflags & BOOK3S_HFLAG_SLB) { 849 for (i = 0; i < 64; i++) { 850 sregs->u.s.ppc64.slb[i].slbe = vcpu->arch.slb[i].orige | i; 851 sregs->u.s.ppc64.slb[i].slbv = vcpu->arch.slb[i].origv; 852 } 853 } else { 854 for (i = 0; i < 16; i++) 855 sregs->u.s.ppc32.sr[i] = vcpu->arch.shared->sr[i]; 856 857 for (i = 0; i < 8; i++) { 858 sregs->u.s.ppc32.ibat[i] = vcpu3s->ibat[i].raw; 859 sregs->u.s.ppc32.dbat[i] = vcpu3s->dbat[i].raw; 860 } 861 } 862 863 return 0; 864 } 865 866 int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, 867 struct kvm_sregs *sregs) 868 { 869 struct kvmppc_vcpu_book3s *vcpu3s = to_book3s(vcpu); 870 int i; 871 872 kvmppc_set_pvr(vcpu, sregs->pvr); 873 874 vcpu3s->sdr1 = sregs->u.s.sdr1; 875 if (vcpu->arch.hflags & BOOK3S_HFLAG_SLB) { 876 for (i = 0; i < 64; i++) { 877 vcpu->arch.mmu.slbmte(vcpu, sregs->u.s.ppc64.slb[i].slbv, 878 sregs->u.s.ppc64.slb[i].slbe); 879 } 880 } else { 881 for (i = 0; i < 16; i++) { 882 vcpu->arch.mmu.mtsrin(vcpu, i, sregs->u.s.ppc32.sr[i]); 883 } 884 for (i = 0; i < 8; i++) { 885 kvmppc_set_bat(vcpu, &(vcpu3s->ibat[i]), false, 886 (u32)sregs->u.s.ppc32.ibat[i]); 887 kvmppc_set_bat(vcpu, &(vcpu3s->ibat[i]), true, 888 (u32)(sregs->u.s.ppc32.ibat[i] >> 32)); 889 kvmppc_set_bat(vcpu, &(vcpu3s->dbat[i]), false, 890 (u32)sregs->u.s.ppc32.dbat[i]); 891 kvmppc_set_bat(vcpu, &(vcpu3s->dbat[i]), true, 892 (u32)(sregs->u.s.ppc32.dbat[i] >> 32)); 893 } 894 } 895 896 /* Flush the MMU after messing with the segments */ 897 kvmppc_mmu_pte_flush(vcpu, 0, 0); 898 899 return 0; 900 } 901 902 int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg) 903 { 904 int r = -EINVAL; 905 906 switch (reg->id) { 907 case KVM_REG_PPC_HIOR: 908 r = copy_to_user((u64 __user *)(long)reg->addr, 909 &to_book3s(vcpu)->hior, sizeof(u64)); 910 break; 911 default: 912 break; 913 } 914 915 return r; 916 } 917 918 int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg) 919 { 920 int r = -EINVAL; 921 922 switch (reg->id) { 923 case KVM_REG_PPC_HIOR: 924 r = copy_from_user(&to_book3s(vcpu)->hior, 925 (u64 __user *)(long)reg->addr, sizeof(u64)); 926 if (!r) 927 to_book3s(vcpu)->hior_explicit = true; 928 break; 929 default: 930 break; 931 } 932 933 return r; 934 } 935 936 int kvmppc_core_check_processor_compat(void) 937 { 938 return 0; 939 } 940 941 struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm, unsigned int id) 942 { 943 struct kvmppc_vcpu_book3s *vcpu_book3s; 944 struct kvm_vcpu *vcpu; 945 int err = -ENOMEM; 946 unsigned long p; 947 948 vcpu_book3s = vzalloc(sizeof(struct kvmppc_vcpu_book3s)); 949 if (!vcpu_book3s) 950 goto out; 951 952 vcpu_book3s->shadow_vcpu = (struct kvmppc_book3s_shadow_vcpu *) 953 kzalloc(sizeof(*vcpu_book3s->shadow_vcpu), GFP_KERNEL); 954 if (!vcpu_book3s->shadow_vcpu) 955 goto free_vcpu; 956 957 vcpu = &vcpu_book3s->vcpu; 958 err = kvm_vcpu_init(vcpu, kvm, id); 959 if (err) 960 goto free_shadow_vcpu; 961 962 p = __get_free_page(GFP_KERNEL|__GFP_ZERO); 963 /* the real shared page fills the last 4k of our page */ 964 vcpu->arch.shared = (void*)(p + PAGE_SIZE - 4096); 965 if (!p) 966 goto uninit_vcpu; 967 968 #ifdef CONFIG_PPC_BOOK3S_64 969 /* default to book3s_64 (970fx) */ 970 vcpu->arch.pvr = 0x3C0301; 971 #else 972 /* default to book3s_32 (750) */ 973 vcpu->arch.pvr = 0x84202; 974 #endif 975 kvmppc_set_pvr(vcpu, vcpu->arch.pvr); 976 vcpu->arch.slb_nr = 64; 977 978 vcpu->arch.shadow_msr = MSR_USER64; 979 980 err = kvmppc_mmu_init(vcpu); 981 if (err < 0) 982 goto uninit_vcpu; 983 984 return vcpu; 985 986 uninit_vcpu: 987 kvm_vcpu_uninit(vcpu); 988 free_shadow_vcpu: 989 kfree(vcpu_book3s->shadow_vcpu); 990 free_vcpu: 991 vfree(vcpu_book3s); 992 out: 993 return ERR_PTR(err); 994 } 995 996 void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu) 997 { 998 struct kvmppc_vcpu_book3s *vcpu_book3s = to_book3s(vcpu); 999 1000 free_page((unsigned long)vcpu->arch.shared & PAGE_MASK); 1001 kvm_vcpu_uninit(vcpu); 1002 kfree(vcpu_book3s->shadow_vcpu); 1003 vfree(vcpu_book3s); 1004 } 1005 1006 int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu) 1007 { 1008 int ret; 1009 double fpr[32][TS_FPRWIDTH]; 1010 unsigned int fpscr; 1011 int fpexc_mode; 1012 #ifdef CONFIG_ALTIVEC 1013 vector128 vr[32]; 1014 vector128 vscr; 1015 unsigned long uninitialized_var(vrsave); 1016 int used_vr; 1017 #endif 1018 #ifdef CONFIG_VSX 1019 int used_vsr; 1020 #endif 1021 ulong ext_msr; 1022 1023 preempt_disable(); 1024 1025 /* Check if we can run the vcpu at all */ 1026 if (!vcpu->arch.sane) { 1027 kvm_run->exit_reason = KVM_EXIT_INTERNAL_ERROR; 1028 ret = -EINVAL; 1029 goto out; 1030 } 1031 1032 kvmppc_core_prepare_to_enter(vcpu); 1033 1034 /* 1035 * Interrupts could be timers for the guest which we have to inject 1036 * again, so let's postpone them until we're in the guest and if we 1037 * really did time things so badly, then we just exit again due to 1038 * a host external interrupt. 1039 */ 1040 __hard_irq_disable(); 1041 1042 /* No need to go into the guest when all we do is going out */ 1043 if (signal_pending(current)) { 1044 __hard_irq_enable(); 1045 kvm_run->exit_reason = KVM_EXIT_INTR; 1046 ret = -EINTR; 1047 goto out; 1048 } 1049 1050 /* Save FPU state in stack */ 1051 if (current->thread.regs->msr & MSR_FP) 1052 giveup_fpu(current); 1053 memcpy(fpr, current->thread.fpr, sizeof(current->thread.fpr)); 1054 fpscr = current->thread.fpscr.val; 1055 fpexc_mode = current->thread.fpexc_mode; 1056 1057 #ifdef CONFIG_ALTIVEC 1058 /* Save Altivec state in stack */ 1059 used_vr = current->thread.used_vr; 1060 if (used_vr) { 1061 if (current->thread.regs->msr & MSR_VEC) 1062 giveup_altivec(current); 1063 memcpy(vr, current->thread.vr, sizeof(current->thread.vr)); 1064 vscr = current->thread.vscr; 1065 vrsave = current->thread.vrsave; 1066 } 1067 #endif 1068 1069 #ifdef CONFIG_VSX 1070 /* Save VSX state in stack */ 1071 used_vsr = current->thread.used_vsr; 1072 if (used_vsr && (current->thread.regs->msr & MSR_VSX)) 1073 __giveup_vsx(current); 1074 #endif 1075 1076 /* Remember the MSR with disabled extensions */ 1077 ext_msr = current->thread.regs->msr; 1078 1079 /* Preload FPU if it's enabled */ 1080 if (vcpu->arch.shared->msr & MSR_FP) 1081 kvmppc_handle_ext(vcpu, BOOK3S_INTERRUPT_FP_UNAVAIL, MSR_FP); 1082 1083 kvm_guest_enter(); 1084 1085 ret = __kvmppc_vcpu_run(kvm_run, vcpu); 1086 1087 kvm_guest_exit(); 1088 1089 current->thread.regs->msr = ext_msr; 1090 1091 /* Make sure we save the guest FPU/Altivec/VSX state */ 1092 kvmppc_giveup_ext(vcpu, MSR_FP); 1093 kvmppc_giveup_ext(vcpu, MSR_VEC); 1094 kvmppc_giveup_ext(vcpu, MSR_VSX); 1095 1096 /* Restore FPU state from stack */ 1097 memcpy(current->thread.fpr, fpr, sizeof(current->thread.fpr)); 1098 current->thread.fpscr.val = fpscr; 1099 current->thread.fpexc_mode = fpexc_mode; 1100 1101 #ifdef CONFIG_ALTIVEC 1102 /* Restore Altivec state from stack */ 1103 if (used_vr && current->thread.used_vr) { 1104 memcpy(current->thread.vr, vr, sizeof(current->thread.vr)); 1105 current->thread.vscr = vscr; 1106 current->thread.vrsave = vrsave; 1107 } 1108 current->thread.used_vr = used_vr; 1109 #endif 1110 1111 #ifdef CONFIG_VSX 1112 current->thread.used_vsr = used_vsr; 1113 #endif 1114 1115 out: 1116 preempt_enable(); 1117 return ret; 1118 } 1119 1120 /* 1121 * Get (and clear) the dirty memory log for a memory slot. 1122 */ 1123 int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, 1124 struct kvm_dirty_log *log) 1125 { 1126 struct kvm_memory_slot *memslot; 1127 struct kvm_vcpu *vcpu; 1128 ulong ga, ga_end; 1129 int is_dirty = 0; 1130 int r; 1131 unsigned long n; 1132 1133 mutex_lock(&kvm->slots_lock); 1134 1135 r = kvm_get_dirty_log(kvm, log, &is_dirty); 1136 if (r) 1137 goto out; 1138 1139 /* If nothing is dirty, don't bother messing with page tables. */ 1140 if (is_dirty) { 1141 memslot = id_to_memslot(kvm->memslots, log->slot); 1142 1143 ga = memslot->base_gfn << PAGE_SHIFT; 1144 ga_end = ga + (memslot->npages << PAGE_SHIFT); 1145 1146 kvm_for_each_vcpu(n, vcpu, kvm) 1147 kvmppc_mmu_pte_pflush(vcpu, ga, ga_end); 1148 1149 n = kvm_dirty_bitmap_bytes(memslot); 1150 memset(memslot->dirty_bitmap, 0, n); 1151 } 1152 1153 r = 0; 1154 out: 1155 mutex_unlock(&kvm->slots_lock); 1156 return r; 1157 } 1158 1159 #ifdef CONFIG_PPC64 1160 int kvm_vm_ioctl_get_smmu_info(struct kvm *kvm, struct kvm_ppc_smmu_info *info) 1161 { 1162 /* No flags */ 1163 info->flags = 0; 1164 1165 /* SLB is always 64 entries */ 1166 info->slb_size = 64; 1167 1168 /* Standard 4k base page size segment */ 1169 info->sps[0].page_shift = 12; 1170 info->sps[0].slb_enc = 0; 1171 info->sps[0].enc[0].page_shift = 12; 1172 info->sps[0].enc[0].pte_enc = 0; 1173 1174 /* Standard 16M large page size segment */ 1175 info->sps[1].page_shift = 24; 1176 info->sps[1].slb_enc = SLB_VSID_L; 1177 info->sps[1].enc[0].page_shift = 24; 1178 info->sps[1].enc[0].pte_enc = 0; 1179 1180 return 0; 1181 } 1182 #endif /* CONFIG_PPC64 */ 1183 1184 int kvmppc_core_prepare_memory_region(struct kvm *kvm, 1185 struct kvm_userspace_memory_region *mem) 1186 { 1187 return 0; 1188 } 1189 1190 void kvmppc_core_commit_memory_region(struct kvm *kvm, 1191 struct kvm_userspace_memory_region *mem) 1192 { 1193 } 1194 1195 int kvmppc_core_init_vm(struct kvm *kvm) 1196 { 1197 #ifdef CONFIG_PPC64 1198 INIT_LIST_HEAD(&kvm->arch.spapr_tce_tables); 1199 #endif 1200 1201 return 0; 1202 } 1203 1204 void kvmppc_core_destroy_vm(struct kvm *kvm) 1205 { 1206 #ifdef CONFIG_PPC64 1207 WARN_ON(!list_empty(&kvm->arch.spapr_tce_tables)); 1208 #endif 1209 } 1210 1211 static int kvmppc_book3s_init(void) 1212 { 1213 int r; 1214 1215 r = kvm_init(NULL, sizeof(struct kvmppc_vcpu_book3s), 0, 1216 THIS_MODULE); 1217 1218 if (r) 1219 return r; 1220 1221 r = kvmppc_mmu_hpte_sysinit(); 1222 1223 return r; 1224 } 1225 1226 static void kvmppc_book3s_exit(void) 1227 { 1228 kvmppc_mmu_hpte_sysexit(); 1229 kvm_exit(); 1230 } 1231 1232 module_init(kvmppc_book3s_init); 1233 module_exit(kvmppc_book3s_exit); 1234