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 <asm/firmware.h> 38 #include <asm/setup.h> 39 #include <linux/gfp.h> 40 #include <linux/sched.h> 41 #include <linux/vmalloc.h> 42 #include <linux/highmem.h> 43 #include <linux/module.h> 44 #include <linux/miscdevice.h> 45 46 #include "book3s.h" 47 48 #define CREATE_TRACE_POINTS 49 #include "trace_pr.h" 50 51 /* #define EXIT_DEBUG */ 52 /* #define DEBUG_EXT */ 53 54 static int kvmppc_handle_ext(struct kvm_vcpu *vcpu, unsigned int exit_nr, 55 ulong msr); 56 static void kvmppc_giveup_fac(struct kvm_vcpu *vcpu, ulong fac); 57 58 /* Some compatibility defines */ 59 #ifdef CONFIG_PPC_BOOK3S_32 60 #define MSR_USER32 MSR_USER 61 #define MSR_USER64 MSR_USER 62 #define HW_PAGE_SIZE PAGE_SIZE 63 #endif 64 65 static bool kvmppc_is_split_real(struct kvm_vcpu *vcpu) 66 { 67 ulong msr = kvmppc_get_msr(vcpu); 68 return (msr & (MSR_IR|MSR_DR)) == MSR_DR; 69 } 70 71 static void kvmppc_fixup_split_real(struct kvm_vcpu *vcpu) 72 { 73 ulong msr = kvmppc_get_msr(vcpu); 74 ulong pc = kvmppc_get_pc(vcpu); 75 76 /* We are in DR only split real mode */ 77 if ((msr & (MSR_IR|MSR_DR)) != MSR_DR) 78 return; 79 80 /* We have not fixed up the guest already */ 81 if (vcpu->arch.hflags & BOOK3S_HFLAG_SPLIT_HACK) 82 return; 83 84 /* The code is in fixupable address space */ 85 if (pc & SPLIT_HACK_MASK) 86 return; 87 88 vcpu->arch.hflags |= BOOK3S_HFLAG_SPLIT_HACK; 89 kvmppc_set_pc(vcpu, pc | SPLIT_HACK_OFFS); 90 } 91 92 void kvmppc_unfixup_split_real(struct kvm_vcpu *vcpu); 93 94 static void kvmppc_core_vcpu_load_pr(struct kvm_vcpu *vcpu, int cpu) 95 { 96 #ifdef CONFIG_PPC_BOOK3S_64 97 struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu); 98 memcpy(svcpu->slb, to_book3s(vcpu)->slb_shadow, sizeof(svcpu->slb)); 99 svcpu->slb_max = to_book3s(vcpu)->slb_shadow_max; 100 svcpu->in_use = 0; 101 svcpu_put(svcpu); 102 #endif 103 104 /* Disable AIL if supported */ 105 if (cpu_has_feature(CPU_FTR_HVMODE) && 106 cpu_has_feature(CPU_FTR_ARCH_207S)) 107 mtspr(SPRN_LPCR, mfspr(SPRN_LPCR) & ~LPCR_AIL); 108 109 vcpu->cpu = smp_processor_id(); 110 #ifdef CONFIG_PPC_BOOK3S_32 111 current->thread.kvm_shadow_vcpu = vcpu->arch.shadow_vcpu; 112 #endif 113 114 if (kvmppc_is_split_real(vcpu)) 115 kvmppc_fixup_split_real(vcpu); 116 } 117 118 static void kvmppc_core_vcpu_put_pr(struct kvm_vcpu *vcpu) 119 { 120 #ifdef CONFIG_PPC_BOOK3S_64 121 struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu); 122 if (svcpu->in_use) { 123 kvmppc_copy_from_svcpu(vcpu, svcpu); 124 } 125 memcpy(to_book3s(vcpu)->slb_shadow, svcpu->slb, sizeof(svcpu->slb)); 126 to_book3s(vcpu)->slb_shadow_max = svcpu->slb_max; 127 svcpu_put(svcpu); 128 #endif 129 130 if (kvmppc_is_split_real(vcpu)) 131 kvmppc_unfixup_split_real(vcpu); 132 133 kvmppc_giveup_ext(vcpu, MSR_FP | MSR_VEC | MSR_VSX); 134 kvmppc_giveup_fac(vcpu, FSCR_TAR_LG); 135 136 /* Enable AIL if supported */ 137 if (cpu_has_feature(CPU_FTR_HVMODE) && 138 cpu_has_feature(CPU_FTR_ARCH_207S)) 139 mtspr(SPRN_LPCR, mfspr(SPRN_LPCR) | LPCR_AIL_3); 140 141 vcpu->cpu = -1; 142 } 143 144 /* Copy data needed by real-mode code from vcpu to shadow vcpu */ 145 void kvmppc_copy_to_svcpu(struct kvmppc_book3s_shadow_vcpu *svcpu, 146 struct kvm_vcpu *vcpu) 147 { 148 svcpu->gpr[0] = vcpu->arch.gpr[0]; 149 svcpu->gpr[1] = vcpu->arch.gpr[1]; 150 svcpu->gpr[2] = vcpu->arch.gpr[2]; 151 svcpu->gpr[3] = vcpu->arch.gpr[3]; 152 svcpu->gpr[4] = vcpu->arch.gpr[4]; 153 svcpu->gpr[5] = vcpu->arch.gpr[5]; 154 svcpu->gpr[6] = vcpu->arch.gpr[6]; 155 svcpu->gpr[7] = vcpu->arch.gpr[7]; 156 svcpu->gpr[8] = vcpu->arch.gpr[8]; 157 svcpu->gpr[9] = vcpu->arch.gpr[9]; 158 svcpu->gpr[10] = vcpu->arch.gpr[10]; 159 svcpu->gpr[11] = vcpu->arch.gpr[11]; 160 svcpu->gpr[12] = vcpu->arch.gpr[12]; 161 svcpu->gpr[13] = vcpu->arch.gpr[13]; 162 svcpu->cr = vcpu->arch.cr; 163 svcpu->xer = vcpu->arch.xer; 164 svcpu->ctr = vcpu->arch.ctr; 165 svcpu->lr = vcpu->arch.lr; 166 svcpu->pc = vcpu->arch.pc; 167 #ifdef CONFIG_PPC_BOOK3S_64 168 svcpu->shadow_fscr = vcpu->arch.shadow_fscr; 169 #endif 170 /* 171 * Now also save the current time base value. We use this 172 * to find the guest purr and spurr value. 173 */ 174 vcpu->arch.entry_tb = get_tb(); 175 vcpu->arch.entry_vtb = get_vtb(); 176 if (cpu_has_feature(CPU_FTR_ARCH_207S)) 177 vcpu->arch.entry_ic = mfspr(SPRN_IC); 178 svcpu->in_use = true; 179 } 180 181 /* Copy data touched by real-mode code from shadow vcpu back to vcpu */ 182 void kvmppc_copy_from_svcpu(struct kvm_vcpu *vcpu, 183 struct kvmppc_book3s_shadow_vcpu *svcpu) 184 { 185 /* 186 * vcpu_put would just call us again because in_use hasn't 187 * been updated yet. 188 */ 189 preempt_disable(); 190 191 /* 192 * Maybe we were already preempted and synced the svcpu from 193 * our preempt notifiers. Don't bother touching this svcpu then. 194 */ 195 if (!svcpu->in_use) 196 goto out; 197 198 vcpu->arch.gpr[0] = svcpu->gpr[0]; 199 vcpu->arch.gpr[1] = svcpu->gpr[1]; 200 vcpu->arch.gpr[2] = svcpu->gpr[2]; 201 vcpu->arch.gpr[3] = svcpu->gpr[3]; 202 vcpu->arch.gpr[4] = svcpu->gpr[4]; 203 vcpu->arch.gpr[5] = svcpu->gpr[5]; 204 vcpu->arch.gpr[6] = svcpu->gpr[6]; 205 vcpu->arch.gpr[7] = svcpu->gpr[7]; 206 vcpu->arch.gpr[8] = svcpu->gpr[8]; 207 vcpu->arch.gpr[9] = svcpu->gpr[9]; 208 vcpu->arch.gpr[10] = svcpu->gpr[10]; 209 vcpu->arch.gpr[11] = svcpu->gpr[11]; 210 vcpu->arch.gpr[12] = svcpu->gpr[12]; 211 vcpu->arch.gpr[13] = svcpu->gpr[13]; 212 vcpu->arch.cr = svcpu->cr; 213 vcpu->arch.xer = svcpu->xer; 214 vcpu->arch.ctr = svcpu->ctr; 215 vcpu->arch.lr = svcpu->lr; 216 vcpu->arch.pc = svcpu->pc; 217 vcpu->arch.shadow_srr1 = svcpu->shadow_srr1; 218 vcpu->arch.fault_dar = svcpu->fault_dar; 219 vcpu->arch.fault_dsisr = svcpu->fault_dsisr; 220 vcpu->arch.last_inst = svcpu->last_inst; 221 #ifdef CONFIG_PPC_BOOK3S_64 222 vcpu->arch.shadow_fscr = svcpu->shadow_fscr; 223 #endif 224 /* 225 * Update purr and spurr using time base on exit. 226 */ 227 vcpu->arch.purr += get_tb() - vcpu->arch.entry_tb; 228 vcpu->arch.spurr += get_tb() - vcpu->arch.entry_tb; 229 to_book3s(vcpu)->vtb += get_vtb() - vcpu->arch.entry_vtb; 230 if (cpu_has_feature(CPU_FTR_ARCH_207S)) 231 vcpu->arch.ic += mfspr(SPRN_IC) - vcpu->arch.entry_ic; 232 svcpu->in_use = false; 233 234 out: 235 preempt_enable(); 236 } 237 238 static int kvmppc_core_check_requests_pr(struct kvm_vcpu *vcpu) 239 { 240 int r = 1; /* Indicate we want to get back into the guest */ 241 242 /* We misuse TLB_FLUSH to indicate that we want to clear 243 all shadow cache entries */ 244 if (kvm_check_request(KVM_REQ_TLB_FLUSH, vcpu)) 245 kvmppc_mmu_pte_flush(vcpu, 0, 0); 246 247 return r; 248 } 249 250 /************* MMU Notifiers *************/ 251 static void do_kvm_unmap_hva(struct kvm *kvm, unsigned long start, 252 unsigned long end) 253 { 254 long i; 255 struct kvm_vcpu *vcpu; 256 struct kvm_memslots *slots; 257 struct kvm_memory_slot *memslot; 258 259 slots = kvm_memslots(kvm); 260 kvm_for_each_memslot(memslot, slots) { 261 unsigned long hva_start, hva_end; 262 gfn_t gfn, gfn_end; 263 264 hva_start = max(start, memslot->userspace_addr); 265 hva_end = min(end, memslot->userspace_addr + 266 (memslot->npages << PAGE_SHIFT)); 267 if (hva_start >= hva_end) 268 continue; 269 /* 270 * {gfn(page) | page intersects with [hva_start, hva_end)} = 271 * {gfn, gfn+1, ..., gfn_end-1}. 272 */ 273 gfn = hva_to_gfn_memslot(hva_start, memslot); 274 gfn_end = hva_to_gfn_memslot(hva_end + PAGE_SIZE - 1, memslot); 275 kvm_for_each_vcpu(i, vcpu, kvm) 276 kvmppc_mmu_pte_pflush(vcpu, gfn << PAGE_SHIFT, 277 gfn_end << PAGE_SHIFT); 278 } 279 } 280 281 static int kvm_unmap_hva_pr(struct kvm *kvm, unsigned long hva) 282 { 283 trace_kvm_unmap_hva(hva); 284 285 do_kvm_unmap_hva(kvm, hva, hva + PAGE_SIZE); 286 287 return 0; 288 } 289 290 static int kvm_unmap_hva_range_pr(struct kvm *kvm, unsigned long start, 291 unsigned long end) 292 { 293 do_kvm_unmap_hva(kvm, start, end); 294 295 return 0; 296 } 297 298 static int kvm_age_hva_pr(struct kvm *kvm, unsigned long start, 299 unsigned long end) 300 { 301 /* XXX could be more clever ;) */ 302 return 0; 303 } 304 305 static int kvm_test_age_hva_pr(struct kvm *kvm, unsigned long hva) 306 { 307 /* XXX could be more clever ;) */ 308 return 0; 309 } 310 311 static void kvm_set_spte_hva_pr(struct kvm *kvm, unsigned long hva, pte_t pte) 312 { 313 /* The page will get remapped properly on its next fault */ 314 do_kvm_unmap_hva(kvm, hva, hva + PAGE_SIZE); 315 } 316 317 /*****************************************/ 318 319 static void kvmppc_recalc_shadow_msr(struct kvm_vcpu *vcpu) 320 { 321 ulong guest_msr = kvmppc_get_msr(vcpu); 322 ulong smsr = guest_msr; 323 324 /* Guest MSR values */ 325 smsr &= MSR_FE0 | MSR_FE1 | MSR_SF | MSR_SE | MSR_BE | MSR_LE; 326 /* Process MSR values */ 327 smsr |= MSR_ME | MSR_RI | MSR_IR | MSR_DR | MSR_PR | MSR_EE; 328 /* External providers the guest reserved */ 329 smsr |= (guest_msr & vcpu->arch.guest_owned_ext); 330 /* 64-bit Process MSR values */ 331 #ifdef CONFIG_PPC_BOOK3S_64 332 smsr |= MSR_ISF | MSR_HV; 333 #endif 334 vcpu->arch.shadow_msr = smsr; 335 } 336 337 static void kvmppc_set_msr_pr(struct kvm_vcpu *vcpu, u64 msr) 338 { 339 ulong old_msr = kvmppc_get_msr(vcpu); 340 341 #ifdef EXIT_DEBUG 342 printk(KERN_INFO "KVM: Set MSR to 0x%llx\n", msr); 343 #endif 344 345 msr &= to_book3s(vcpu)->msr_mask; 346 kvmppc_set_msr_fast(vcpu, msr); 347 kvmppc_recalc_shadow_msr(vcpu); 348 349 if (msr & MSR_POW) { 350 if (!vcpu->arch.pending_exceptions) { 351 kvm_vcpu_block(vcpu); 352 clear_bit(KVM_REQ_UNHALT, &vcpu->requests); 353 vcpu->stat.halt_wakeup++; 354 355 /* Unset POW bit after we woke up */ 356 msr &= ~MSR_POW; 357 kvmppc_set_msr_fast(vcpu, msr); 358 } 359 } 360 361 if (kvmppc_is_split_real(vcpu)) 362 kvmppc_fixup_split_real(vcpu); 363 else 364 kvmppc_unfixup_split_real(vcpu); 365 366 if ((kvmppc_get_msr(vcpu) & (MSR_PR|MSR_IR|MSR_DR)) != 367 (old_msr & (MSR_PR|MSR_IR|MSR_DR))) { 368 kvmppc_mmu_flush_segments(vcpu); 369 kvmppc_mmu_map_segment(vcpu, kvmppc_get_pc(vcpu)); 370 371 /* Preload magic page segment when in kernel mode */ 372 if (!(msr & MSR_PR) && vcpu->arch.magic_page_pa) { 373 struct kvm_vcpu_arch *a = &vcpu->arch; 374 375 if (msr & MSR_DR) 376 kvmppc_mmu_map_segment(vcpu, a->magic_page_ea); 377 else 378 kvmppc_mmu_map_segment(vcpu, a->magic_page_pa); 379 } 380 } 381 382 /* 383 * When switching from 32 to 64-bit, we may have a stale 32-bit 384 * magic page around, we need to flush it. Typically 32-bit magic 385 * page will be instanciated when calling into RTAS. Note: We 386 * assume that such transition only happens while in kernel mode, 387 * ie, we never transition from user 32-bit to kernel 64-bit with 388 * a 32-bit magic page around. 389 */ 390 if (vcpu->arch.magic_page_pa && 391 !(old_msr & MSR_PR) && !(old_msr & MSR_SF) && (msr & MSR_SF)) { 392 /* going from RTAS to normal kernel code */ 393 kvmppc_mmu_pte_flush(vcpu, (uint32_t)vcpu->arch.magic_page_pa, 394 ~0xFFFUL); 395 } 396 397 /* Preload FPU if it's enabled */ 398 if (kvmppc_get_msr(vcpu) & MSR_FP) 399 kvmppc_handle_ext(vcpu, BOOK3S_INTERRUPT_FP_UNAVAIL, MSR_FP); 400 } 401 402 void kvmppc_set_pvr_pr(struct kvm_vcpu *vcpu, u32 pvr) 403 { 404 u32 host_pvr; 405 406 vcpu->arch.hflags &= ~BOOK3S_HFLAG_SLB; 407 vcpu->arch.pvr = pvr; 408 #ifdef CONFIG_PPC_BOOK3S_64 409 if ((pvr >= 0x330000) && (pvr < 0x70330000)) { 410 kvmppc_mmu_book3s_64_init(vcpu); 411 if (!to_book3s(vcpu)->hior_explicit) 412 to_book3s(vcpu)->hior = 0xfff00000; 413 to_book3s(vcpu)->msr_mask = 0xffffffffffffffffULL; 414 vcpu->arch.cpu_type = KVM_CPU_3S_64; 415 } else 416 #endif 417 { 418 kvmppc_mmu_book3s_32_init(vcpu); 419 if (!to_book3s(vcpu)->hior_explicit) 420 to_book3s(vcpu)->hior = 0; 421 to_book3s(vcpu)->msr_mask = 0xffffffffULL; 422 vcpu->arch.cpu_type = KVM_CPU_3S_32; 423 } 424 425 kvmppc_sanity_check(vcpu); 426 427 /* If we are in hypervisor level on 970, we can tell the CPU to 428 * treat DCBZ as 32 bytes store */ 429 vcpu->arch.hflags &= ~BOOK3S_HFLAG_DCBZ32; 430 if (vcpu->arch.mmu.is_dcbz32(vcpu) && (mfmsr() & MSR_HV) && 431 !strcmp(cur_cpu_spec->platform, "ppc970")) 432 vcpu->arch.hflags |= BOOK3S_HFLAG_DCBZ32; 433 434 /* Cell performs badly if MSR_FEx are set. So let's hope nobody 435 really needs them in a VM on Cell and force disable them. */ 436 if (!strcmp(cur_cpu_spec->platform, "ppc-cell-be")) 437 to_book3s(vcpu)->msr_mask &= ~(MSR_FE0 | MSR_FE1); 438 439 /* 440 * If they're asking for POWER6 or later, set the flag 441 * indicating that we can do multiple large page sizes 442 * and 1TB segments. 443 * Also set the flag that indicates that tlbie has the large 444 * page bit in the RB operand instead of the instruction. 445 */ 446 switch (PVR_VER(pvr)) { 447 case PVR_POWER6: 448 case PVR_POWER7: 449 case PVR_POWER7p: 450 case PVR_POWER8: 451 case PVR_POWER8E: 452 case PVR_POWER8NVL: 453 vcpu->arch.hflags |= BOOK3S_HFLAG_MULTI_PGSIZE | 454 BOOK3S_HFLAG_NEW_TLBIE; 455 break; 456 } 457 458 #ifdef CONFIG_PPC_BOOK3S_32 459 /* 32 bit Book3S always has 32 byte dcbz */ 460 vcpu->arch.hflags |= BOOK3S_HFLAG_DCBZ32; 461 #endif 462 463 /* On some CPUs we can execute paired single operations natively */ 464 asm ( "mfpvr %0" : "=r"(host_pvr)); 465 switch (host_pvr) { 466 case 0x00080200: /* lonestar 2.0 */ 467 case 0x00088202: /* lonestar 2.2 */ 468 case 0x70000100: /* gekko 1.0 */ 469 case 0x00080100: /* gekko 2.0 */ 470 case 0x00083203: /* gekko 2.3a */ 471 case 0x00083213: /* gekko 2.3b */ 472 case 0x00083204: /* gekko 2.4 */ 473 case 0x00083214: /* gekko 2.4e (8SE) - retail HW2 */ 474 case 0x00087200: /* broadway */ 475 vcpu->arch.hflags |= BOOK3S_HFLAG_NATIVE_PS; 476 /* Enable HID2.PSE - in case we need it later */ 477 mtspr(SPRN_HID2_GEKKO, mfspr(SPRN_HID2_GEKKO) | (1 << 29)); 478 } 479 } 480 481 /* Book3s_32 CPUs always have 32 bytes cache line size, which Linux assumes. To 482 * make Book3s_32 Linux work on Book3s_64, we have to make sure we trap dcbz to 483 * emulate 32 bytes dcbz length. 484 * 485 * The Book3s_64 inventors also realized this case and implemented a special bit 486 * in the HID5 register, which is a hypervisor ressource. Thus we can't use it. 487 * 488 * My approach here is to patch the dcbz instruction on executing pages. 489 */ 490 static void kvmppc_patch_dcbz(struct kvm_vcpu *vcpu, struct kvmppc_pte *pte) 491 { 492 struct page *hpage; 493 u64 hpage_offset; 494 u32 *page; 495 int i; 496 497 hpage = gfn_to_page(vcpu->kvm, pte->raddr >> PAGE_SHIFT); 498 if (is_error_page(hpage)) 499 return; 500 501 hpage_offset = pte->raddr & ~PAGE_MASK; 502 hpage_offset &= ~0xFFFULL; 503 hpage_offset /= 4; 504 505 get_page(hpage); 506 page = kmap_atomic(hpage); 507 508 /* patch dcbz into reserved instruction, so we trap */ 509 for (i=hpage_offset; i < hpage_offset + (HW_PAGE_SIZE / 4); i++) 510 if ((be32_to_cpu(page[i]) & 0xff0007ff) == INS_DCBZ) 511 page[i] &= cpu_to_be32(0xfffffff7); 512 513 kunmap_atomic(page); 514 put_page(hpage); 515 } 516 517 static bool kvmppc_visible_gpa(struct kvm_vcpu *vcpu, gpa_t gpa) 518 { 519 ulong mp_pa = vcpu->arch.magic_page_pa; 520 521 if (!(kvmppc_get_msr(vcpu) & MSR_SF)) 522 mp_pa = (uint32_t)mp_pa; 523 524 gpa &= ~0xFFFULL; 525 if (unlikely(mp_pa) && unlikely((mp_pa & KVM_PAM) == (gpa & KVM_PAM))) { 526 return true; 527 } 528 529 return kvm_is_visible_gfn(vcpu->kvm, gpa >> PAGE_SHIFT); 530 } 531 532 int kvmppc_handle_pagefault(struct kvm_run *run, struct kvm_vcpu *vcpu, 533 ulong eaddr, int vec) 534 { 535 bool data = (vec == BOOK3S_INTERRUPT_DATA_STORAGE); 536 bool iswrite = false; 537 int r = RESUME_GUEST; 538 int relocated; 539 int page_found = 0; 540 struct kvmppc_pte pte; 541 bool is_mmio = false; 542 bool dr = (kvmppc_get_msr(vcpu) & MSR_DR) ? true : false; 543 bool ir = (kvmppc_get_msr(vcpu) & MSR_IR) ? true : false; 544 u64 vsid; 545 546 relocated = data ? dr : ir; 547 if (data && (vcpu->arch.fault_dsisr & DSISR_ISSTORE)) 548 iswrite = true; 549 550 /* Resolve real address if translation turned on */ 551 if (relocated) { 552 page_found = vcpu->arch.mmu.xlate(vcpu, eaddr, &pte, data, iswrite); 553 } else { 554 pte.may_execute = true; 555 pte.may_read = true; 556 pte.may_write = true; 557 pte.raddr = eaddr & KVM_PAM; 558 pte.eaddr = eaddr; 559 pte.vpage = eaddr >> 12; 560 pte.page_size = MMU_PAGE_64K; 561 } 562 563 switch (kvmppc_get_msr(vcpu) & (MSR_DR|MSR_IR)) { 564 case 0: 565 pte.vpage |= ((u64)VSID_REAL << (SID_SHIFT - 12)); 566 break; 567 case MSR_DR: 568 if (!data && 569 (vcpu->arch.hflags & BOOK3S_HFLAG_SPLIT_HACK) && 570 ((pte.raddr & SPLIT_HACK_MASK) == SPLIT_HACK_OFFS)) 571 pte.raddr &= ~SPLIT_HACK_MASK; 572 /* fall through */ 573 case MSR_IR: 574 vcpu->arch.mmu.esid_to_vsid(vcpu, eaddr >> SID_SHIFT, &vsid); 575 576 if ((kvmppc_get_msr(vcpu) & (MSR_DR|MSR_IR)) == MSR_DR) 577 pte.vpage |= ((u64)VSID_REAL_DR << (SID_SHIFT - 12)); 578 else 579 pte.vpage |= ((u64)VSID_REAL_IR << (SID_SHIFT - 12)); 580 pte.vpage |= vsid; 581 582 if (vsid == -1) 583 page_found = -EINVAL; 584 break; 585 } 586 587 if (vcpu->arch.mmu.is_dcbz32(vcpu) && 588 (!(vcpu->arch.hflags & BOOK3S_HFLAG_DCBZ32))) { 589 /* 590 * If we do the dcbz hack, we have to NX on every execution, 591 * so we can patch the executing code. This renders our guest 592 * NX-less. 593 */ 594 pte.may_execute = !data; 595 } 596 597 if (page_found == -ENOENT) { 598 /* Page not found in guest PTE entries */ 599 u64 ssrr1 = vcpu->arch.shadow_srr1; 600 u64 msr = kvmppc_get_msr(vcpu); 601 kvmppc_set_dar(vcpu, kvmppc_get_fault_dar(vcpu)); 602 kvmppc_set_dsisr(vcpu, vcpu->arch.fault_dsisr); 603 kvmppc_set_msr_fast(vcpu, msr | (ssrr1 & 0xf8000000ULL)); 604 kvmppc_book3s_queue_irqprio(vcpu, vec); 605 } else if (page_found == -EPERM) { 606 /* Storage protection */ 607 u32 dsisr = vcpu->arch.fault_dsisr; 608 u64 ssrr1 = vcpu->arch.shadow_srr1; 609 u64 msr = kvmppc_get_msr(vcpu); 610 kvmppc_set_dar(vcpu, kvmppc_get_fault_dar(vcpu)); 611 dsisr = (dsisr & ~DSISR_NOHPTE) | DSISR_PROTFAULT; 612 kvmppc_set_dsisr(vcpu, dsisr); 613 kvmppc_set_msr_fast(vcpu, msr | (ssrr1 & 0xf8000000ULL)); 614 kvmppc_book3s_queue_irqprio(vcpu, vec); 615 } else if (page_found == -EINVAL) { 616 /* Page not found in guest SLB */ 617 kvmppc_set_dar(vcpu, kvmppc_get_fault_dar(vcpu)); 618 kvmppc_book3s_queue_irqprio(vcpu, vec + 0x80); 619 } else if (!is_mmio && 620 kvmppc_visible_gpa(vcpu, pte.raddr)) { 621 if (data && !(vcpu->arch.fault_dsisr & DSISR_NOHPTE)) { 622 /* 623 * There is already a host HPTE there, presumably 624 * a read-only one for a page the guest thinks 625 * is writable, so get rid of it first. 626 */ 627 kvmppc_mmu_unmap_page(vcpu, &pte); 628 } 629 /* The guest's PTE is not mapped yet. Map on the host */ 630 kvmppc_mmu_map_page(vcpu, &pte, iswrite); 631 if (data) 632 vcpu->stat.sp_storage++; 633 else if (vcpu->arch.mmu.is_dcbz32(vcpu) && 634 (!(vcpu->arch.hflags & BOOK3S_HFLAG_DCBZ32))) 635 kvmppc_patch_dcbz(vcpu, &pte); 636 } else { 637 /* MMIO */ 638 vcpu->stat.mmio_exits++; 639 vcpu->arch.paddr_accessed = pte.raddr; 640 vcpu->arch.vaddr_accessed = pte.eaddr; 641 r = kvmppc_emulate_mmio(run, vcpu); 642 if ( r == RESUME_HOST_NV ) 643 r = RESUME_HOST; 644 } 645 646 return r; 647 } 648 649 /* Give up external provider (FPU, Altivec, VSX) */ 650 void kvmppc_giveup_ext(struct kvm_vcpu *vcpu, ulong msr) 651 { 652 struct thread_struct *t = ¤t->thread; 653 654 /* 655 * VSX instructions can access FP and vector registers, so if 656 * we are giving up VSX, make sure we give up FP and VMX as well. 657 */ 658 if (msr & MSR_VSX) 659 msr |= MSR_FP | MSR_VEC; 660 661 msr &= vcpu->arch.guest_owned_ext; 662 if (!msr) 663 return; 664 665 #ifdef DEBUG_EXT 666 printk(KERN_INFO "Giving up ext 0x%lx\n", msr); 667 #endif 668 669 if (msr & MSR_FP) { 670 /* 671 * Note that on CPUs with VSX, giveup_fpu stores 672 * both the traditional FP registers and the added VSX 673 * registers into thread.fp_state.fpr[]. 674 */ 675 if (t->regs->msr & MSR_FP) 676 giveup_fpu(current); 677 t->fp_save_area = NULL; 678 } 679 680 #ifdef CONFIG_ALTIVEC 681 if (msr & MSR_VEC) { 682 if (current->thread.regs->msr & MSR_VEC) 683 giveup_altivec(current); 684 t->vr_save_area = NULL; 685 } 686 #endif 687 688 vcpu->arch.guest_owned_ext &= ~(msr | MSR_VSX); 689 kvmppc_recalc_shadow_msr(vcpu); 690 } 691 692 /* Give up facility (TAR / EBB / DSCR) */ 693 static void kvmppc_giveup_fac(struct kvm_vcpu *vcpu, ulong fac) 694 { 695 #ifdef CONFIG_PPC_BOOK3S_64 696 if (!(vcpu->arch.shadow_fscr & (1ULL << fac))) { 697 /* Facility not available to the guest, ignore giveup request*/ 698 return; 699 } 700 701 switch (fac) { 702 case FSCR_TAR_LG: 703 vcpu->arch.tar = mfspr(SPRN_TAR); 704 mtspr(SPRN_TAR, current->thread.tar); 705 vcpu->arch.shadow_fscr &= ~FSCR_TAR; 706 break; 707 } 708 #endif 709 } 710 711 /* Handle external providers (FPU, Altivec, VSX) */ 712 static int kvmppc_handle_ext(struct kvm_vcpu *vcpu, unsigned int exit_nr, 713 ulong msr) 714 { 715 struct thread_struct *t = ¤t->thread; 716 717 /* When we have paired singles, we emulate in software */ 718 if (vcpu->arch.hflags & BOOK3S_HFLAG_PAIRED_SINGLE) 719 return RESUME_GUEST; 720 721 if (!(kvmppc_get_msr(vcpu) & msr)) { 722 kvmppc_book3s_queue_irqprio(vcpu, exit_nr); 723 return RESUME_GUEST; 724 } 725 726 if (msr == MSR_VSX) { 727 /* No VSX? Give an illegal instruction interrupt */ 728 #ifdef CONFIG_VSX 729 if (!cpu_has_feature(CPU_FTR_VSX)) 730 #endif 731 { 732 kvmppc_core_queue_program(vcpu, SRR1_PROGILL); 733 return RESUME_GUEST; 734 } 735 736 /* 737 * We have to load up all the FP and VMX registers before 738 * we can let the guest use VSX instructions. 739 */ 740 msr = MSR_FP | MSR_VEC | MSR_VSX; 741 } 742 743 /* See if we already own all the ext(s) needed */ 744 msr &= ~vcpu->arch.guest_owned_ext; 745 if (!msr) 746 return RESUME_GUEST; 747 748 #ifdef DEBUG_EXT 749 printk(KERN_INFO "Loading up ext 0x%lx\n", msr); 750 #endif 751 752 if (msr & MSR_FP) { 753 preempt_disable(); 754 enable_kernel_fp(); 755 load_fp_state(&vcpu->arch.fp); 756 disable_kernel_fp(); 757 t->fp_save_area = &vcpu->arch.fp; 758 preempt_enable(); 759 } 760 761 if (msr & MSR_VEC) { 762 #ifdef CONFIG_ALTIVEC 763 preempt_disable(); 764 enable_kernel_altivec(); 765 load_vr_state(&vcpu->arch.vr); 766 disable_kernel_altivec(); 767 t->vr_save_area = &vcpu->arch.vr; 768 preempt_enable(); 769 #endif 770 } 771 772 t->regs->msr |= msr; 773 vcpu->arch.guest_owned_ext |= msr; 774 kvmppc_recalc_shadow_msr(vcpu); 775 776 return RESUME_GUEST; 777 } 778 779 /* 780 * Kernel code using FP or VMX could have flushed guest state to 781 * the thread_struct; if so, get it back now. 782 */ 783 static void kvmppc_handle_lost_ext(struct kvm_vcpu *vcpu) 784 { 785 unsigned long lost_ext; 786 787 lost_ext = vcpu->arch.guest_owned_ext & ~current->thread.regs->msr; 788 if (!lost_ext) 789 return; 790 791 if (lost_ext & MSR_FP) { 792 preempt_disable(); 793 enable_kernel_fp(); 794 load_fp_state(&vcpu->arch.fp); 795 disable_kernel_fp(); 796 preempt_enable(); 797 } 798 #ifdef CONFIG_ALTIVEC 799 if (lost_ext & MSR_VEC) { 800 preempt_disable(); 801 enable_kernel_altivec(); 802 load_vr_state(&vcpu->arch.vr); 803 disable_kernel_altivec(); 804 preempt_enable(); 805 } 806 #endif 807 current->thread.regs->msr |= lost_ext; 808 } 809 810 #ifdef CONFIG_PPC_BOOK3S_64 811 812 static void kvmppc_trigger_fac_interrupt(struct kvm_vcpu *vcpu, ulong fac) 813 { 814 /* Inject the Interrupt Cause field and trigger a guest interrupt */ 815 vcpu->arch.fscr &= ~(0xffULL << 56); 816 vcpu->arch.fscr |= (fac << 56); 817 kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_FAC_UNAVAIL); 818 } 819 820 static void kvmppc_emulate_fac(struct kvm_vcpu *vcpu, ulong fac) 821 { 822 enum emulation_result er = EMULATE_FAIL; 823 824 if (!(kvmppc_get_msr(vcpu) & MSR_PR)) 825 er = kvmppc_emulate_instruction(vcpu->run, vcpu); 826 827 if ((er != EMULATE_DONE) && (er != EMULATE_AGAIN)) { 828 /* Couldn't emulate, trigger interrupt in guest */ 829 kvmppc_trigger_fac_interrupt(vcpu, fac); 830 } 831 } 832 833 /* Enable facilities (TAR, EBB, DSCR) for the guest */ 834 static int kvmppc_handle_fac(struct kvm_vcpu *vcpu, ulong fac) 835 { 836 bool guest_fac_enabled; 837 BUG_ON(!cpu_has_feature(CPU_FTR_ARCH_207S)); 838 839 /* 840 * Not every facility is enabled by FSCR bits, check whether the 841 * guest has this facility enabled at all. 842 */ 843 switch (fac) { 844 case FSCR_TAR_LG: 845 case FSCR_EBB_LG: 846 guest_fac_enabled = (vcpu->arch.fscr & (1ULL << fac)); 847 break; 848 case FSCR_TM_LG: 849 guest_fac_enabled = kvmppc_get_msr(vcpu) & MSR_TM; 850 break; 851 default: 852 guest_fac_enabled = false; 853 break; 854 } 855 856 if (!guest_fac_enabled) { 857 /* Facility not enabled by the guest */ 858 kvmppc_trigger_fac_interrupt(vcpu, fac); 859 return RESUME_GUEST; 860 } 861 862 switch (fac) { 863 case FSCR_TAR_LG: 864 /* TAR switching isn't lazy in Linux yet */ 865 current->thread.tar = mfspr(SPRN_TAR); 866 mtspr(SPRN_TAR, vcpu->arch.tar); 867 vcpu->arch.shadow_fscr |= FSCR_TAR; 868 break; 869 default: 870 kvmppc_emulate_fac(vcpu, fac); 871 break; 872 } 873 874 return RESUME_GUEST; 875 } 876 877 void kvmppc_set_fscr(struct kvm_vcpu *vcpu, u64 fscr) 878 { 879 if ((vcpu->arch.fscr & FSCR_TAR) && !(fscr & FSCR_TAR)) { 880 /* TAR got dropped, drop it in shadow too */ 881 kvmppc_giveup_fac(vcpu, FSCR_TAR_LG); 882 } 883 vcpu->arch.fscr = fscr; 884 } 885 #endif 886 887 static void kvmppc_setup_debug(struct kvm_vcpu *vcpu) 888 { 889 if (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP) { 890 u64 msr = kvmppc_get_msr(vcpu); 891 892 kvmppc_set_msr(vcpu, msr | MSR_SE); 893 } 894 } 895 896 static void kvmppc_clear_debug(struct kvm_vcpu *vcpu) 897 { 898 if (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP) { 899 u64 msr = kvmppc_get_msr(vcpu); 900 901 kvmppc_set_msr(vcpu, msr & ~MSR_SE); 902 } 903 } 904 905 int kvmppc_handle_exit_pr(struct kvm_run *run, struct kvm_vcpu *vcpu, 906 unsigned int exit_nr) 907 { 908 int r = RESUME_HOST; 909 int s; 910 911 vcpu->stat.sum_exits++; 912 913 run->exit_reason = KVM_EXIT_UNKNOWN; 914 run->ready_for_interrupt_injection = 1; 915 916 /* We get here with MSR.EE=1 */ 917 918 trace_kvm_exit(exit_nr, vcpu); 919 guest_exit(); 920 921 switch (exit_nr) { 922 case BOOK3S_INTERRUPT_INST_STORAGE: 923 { 924 ulong shadow_srr1 = vcpu->arch.shadow_srr1; 925 vcpu->stat.pf_instruc++; 926 927 if (kvmppc_is_split_real(vcpu)) 928 kvmppc_fixup_split_real(vcpu); 929 930 #ifdef CONFIG_PPC_BOOK3S_32 931 /* We set segments as unused segments when invalidating them. So 932 * treat the respective fault as segment fault. */ 933 { 934 struct kvmppc_book3s_shadow_vcpu *svcpu; 935 u32 sr; 936 937 svcpu = svcpu_get(vcpu); 938 sr = svcpu->sr[kvmppc_get_pc(vcpu) >> SID_SHIFT]; 939 svcpu_put(svcpu); 940 if (sr == SR_INVALID) { 941 kvmppc_mmu_map_segment(vcpu, kvmppc_get_pc(vcpu)); 942 r = RESUME_GUEST; 943 break; 944 } 945 } 946 #endif 947 948 /* only care about PTEG not found errors, but leave NX alone */ 949 if (shadow_srr1 & 0x40000000) { 950 int idx = srcu_read_lock(&vcpu->kvm->srcu); 951 r = kvmppc_handle_pagefault(run, vcpu, kvmppc_get_pc(vcpu), exit_nr); 952 srcu_read_unlock(&vcpu->kvm->srcu, idx); 953 vcpu->stat.sp_instruc++; 954 } else if (vcpu->arch.mmu.is_dcbz32(vcpu) && 955 (!(vcpu->arch.hflags & BOOK3S_HFLAG_DCBZ32))) { 956 /* 957 * XXX If we do the dcbz hack we use the NX bit to flush&patch the page, 958 * so we can't use the NX bit inside the guest. Let's cross our fingers, 959 * that no guest that needs the dcbz hack does NX. 960 */ 961 kvmppc_mmu_pte_flush(vcpu, kvmppc_get_pc(vcpu), ~0xFFFUL); 962 r = RESUME_GUEST; 963 } else { 964 u64 msr = kvmppc_get_msr(vcpu); 965 msr |= shadow_srr1 & 0x58000000; 966 kvmppc_set_msr_fast(vcpu, msr); 967 kvmppc_book3s_queue_irqprio(vcpu, exit_nr); 968 r = RESUME_GUEST; 969 } 970 break; 971 } 972 case BOOK3S_INTERRUPT_DATA_STORAGE: 973 { 974 ulong dar = kvmppc_get_fault_dar(vcpu); 975 u32 fault_dsisr = vcpu->arch.fault_dsisr; 976 vcpu->stat.pf_storage++; 977 978 #ifdef CONFIG_PPC_BOOK3S_32 979 /* We set segments as unused segments when invalidating them. So 980 * treat the respective fault as segment fault. */ 981 { 982 struct kvmppc_book3s_shadow_vcpu *svcpu; 983 u32 sr; 984 985 svcpu = svcpu_get(vcpu); 986 sr = svcpu->sr[dar >> SID_SHIFT]; 987 svcpu_put(svcpu); 988 if (sr == SR_INVALID) { 989 kvmppc_mmu_map_segment(vcpu, dar); 990 r = RESUME_GUEST; 991 break; 992 } 993 } 994 #endif 995 996 /* 997 * We need to handle missing shadow PTEs, and 998 * protection faults due to us mapping a page read-only 999 * when the guest thinks it is writable. 1000 */ 1001 if (fault_dsisr & (DSISR_NOHPTE | DSISR_PROTFAULT)) { 1002 int idx = srcu_read_lock(&vcpu->kvm->srcu); 1003 r = kvmppc_handle_pagefault(run, vcpu, dar, exit_nr); 1004 srcu_read_unlock(&vcpu->kvm->srcu, idx); 1005 } else { 1006 kvmppc_set_dar(vcpu, dar); 1007 kvmppc_set_dsisr(vcpu, fault_dsisr); 1008 kvmppc_book3s_queue_irqprio(vcpu, exit_nr); 1009 r = RESUME_GUEST; 1010 } 1011 break; 1012 } 1013 case BOOK3S_INTERRUPT_DATA_SEGMENT: 1014 if (kvmppc_mmu_map_segment(vcpu, kvmppc_get_fault_dar(vcpu)) < 0) { 1015 kvmppc_set_dar(vcpu, kvmppc_get_fault_dar(vcpu)); 1016 kvmppc_book3s_queue_irqprio(vcpu, 1017 BOOK3S_INTERRUPT_DATA_SEGMENT); 1018 } 1019 r = RESUME_GUEST; 1020 break; 1021 case BOOK3S_INTERRUPT_INST_SEGMENT: 1022 if (kvmppc_mmu_map_segment(vcpu, kvmppc_get_pc(vcpu)) < 0) { 1023 kvmppc_book3s_queue_irqprio(vcpu, 1024 BOOK3S_INTERRUPT_INST_SEGMENT); 1025 } 1026 r = RESUME_GUEST; 1027 break; 1028 /* We're good on these - the host merely wanted to get our attention */ 1029 case BOOK3S_INTERRUPT_DECREMENTER: 1030 case BOOK3S_INTERRUPT_HV_DECREMENTER: 1031 case BOOK3S_INTERRUPT_DOORBELL: 1032 case BOOK3S_INTERRUPT_H_DOORBELL: 1033 vcpu->stat.dec_exits++; 1034 r = RESUME_GUEST; 1035 break; 1036 case BOOK3S_INTERRUPT_EXTERNAL: 1037 case BOOK3S_INTERRUPT_EXTERNAL_LEVEL: 1038 case BOOK3S_INTERRUPT_EXTERNAL_HV: 1039 vcpu->stat.ext_intr_exits++; 1040 r = RESUME_GUEST; 1041 break; 1042 case BOOK3S_INTERRUPT_PERFMON: 1043 r = RESUME_GUEST; 1044 break; 1045 case BOOK3S_INTERRUPT_PROGRAM: 1046 case BOOK3S_INTERRUPT_H_EMUL_ASSIST: 1047 { 1048 enum emulation_result er; 1049 ulong flags; 1050 u32 last_inst; 1051 int emul; 1052 1053 program_interrupt: 1054 /* 1055 * shadow_srr1 only contains valid flags if we came here via 1056 * a program exception. The other exceptions (emulation assist, 1057 * FP unavailable, etc.) do not provide flags in SRR1, so use 1058 * an illegal-instruction exception when injecting a program 1059 * interrupt into the guest. 1060 */ 1061 if (exit_nr == BOOK3S_INTERRUPT_PROGRAM) 1062 flags = vcpu->arch.shadow_srr1 & 0x1f0000ull; 1063 else 1064 flags = SRR1_PROGILL; 1065 1066 emul = kvmppc_get_last_inst(vcpu, INST_GENERIC, &last_inst); 1067 if (emul != EMULATE_DONE) { 1068 r = RESUME_GUEST; 1069 break; 1070 } 1071 1072 if (kvmppc_get_msr(vcpu) & MSR_PR) { 1073 #ifdef EXIT_DEBUG 1074 pr_info("Userspace triggered 0x700 exception at\n 0x%lx (0x%x)\n", 1075 kvmppc_get_pc(vcpu), last_inst); 1076 #endif 1077 if ((last_inst & 0xff0007ff) != 1078 (INS_DCBZ & 0xfffffff7)) { 1079 kvmppc_core_queue_program(vcpu, flags); 1080 r = RESUME_GUEST; 1081 break; 1082 } 1083 } 1084 1085 vcpu->stat.emulated_inst_exits++; 1086 er = kvmppc_emulate_instruction(run, vcpu); 1087 switch (er) { 1088 case EMULATE_DONE: 1089 r = RESUME_GUEST_NV; 1090 break; 1091 case EMULATE_AGAIN: 1092 r = RESUME_GUEST; 1093 break; 1094 case EMULATE_FAIL: 1095 printk(KERN_CRIT "%s: emulation at %lx failed (%08x)\n", 1096 __func__, kvmppc_get_pc(vcpu), last_inst); 1097 kvmppc_core_queue_program(vcpu, flags); 1098 r = RESUME_GUEST; 1099 break; 1100 case EMULATE_DO_MMIO: 1101 run->exit_reason = KVM_EXIT_MMIO; 1102 r = RESUME_HOST_NV; 1103 break; 1104 case EMULATE_EXIT_USER: 1105 r = RESUME_HOST_NV; 1106 break; 1107 default: 1108 BUG(); 1109 } 1110 break; 1111 } 1112 case BOOK3S_INTERRUPT_SYSCALL: 1113 { 1114 u32 last_sc; 1115 int emul; 1116 1117 /* Get last sc for papr */ 1118 if (vcpu->arch.papr_enabled) { 1119 /* The sc instuction points SRR0 to the next inst */ 1120 emul = kvmppc_get_last_inst(vcpu, INST_SC, &last_sc); 1121 if (emul != EMULATE_DONE) { 1122 kvmppc_set_pc(vcpu, kvmppc_get_pc(vcpu) - 4); 1123 r = RESUME_GUEST; 1124 break; 1125 } 1126 } 1127 1128 if (vcpu->arch.papr_enabled && 1129 (last_sc == 0x44000022) && 1130 !(kvmppc_get_msr(vcpu) & MSR_PR)) { 1131 /* SC 1 papr hypercalls */ 1132 ulong cmd = kvmppc_get_gpr(vcpu, 3); 1133 int i; 1134 1135 #ifdef CONFIG_PPC_BOOK3S_64 1136 if (kvmppc_h_pr(vcpu, cmd) == EMULATE_DONE) { 1137 r = RESUME_GUEST; 1138 break; 1139 } 1140 #endif 1141 1142 run->papr_hcall.nr = cmd; 1143 for (i = 0; i < 9; ++i) { 1144 ulong gpr = kvmppc_get_gpr(vcpu, 4 + i); 1145 run->papr_hcall.args[i] = gpr; 1146 } 1147 run->exit_reason = KVM_EXIT_PAPR_HCALL; 1148 vcpu->arch.hcall_needed = 1; 1149 r = RESUME_HOST; 1150 } else if (vcpu->arch.osi_enabled && 1151 (((u32)kvmppc_get_gpr(vcpu, 3)) == OSI_SC_MAGIC_R3) && 1152 (((u32)kvmppc_get_gpr(vcpu, 4)) == OSI_SC_MAGIC_R4)) { 1153 /* MOL hypercalls */ 1154 u64 *gprs = run->osi.gprs; 1155 int i; 1156 1157 run->exit_reason = KVM_EXIT_OSI; 1158 for (i = 0; i < 32; i++) 1159 gprs[i] = kvmppc_get_gpr(vcpu, i); 1160 vcpu->arch.osi_needed = 1; 1161 r = RESUME_HOST_NV; 1162 } else if (!(kvmppc_get_msr(vcpu) & MSR_PR) && 1163 (((u32)kvmppc_get_gpr(vcpu, 0)) == KVM_SC_MAGIC_R0)) { 1164 /* KVM PV hypercalls */ 1165 kvmppc_set_gpr(vcpu, 3, kvmppc_kvm_pv(vcpu)); 1166 r = RESUME_GUEST; 1167 } else { 1168 /* Guest syscalls */ 1169 vcpu->stat.syscall_exits++; 1170 kvmppc_book3s_queue_irqprio(vcpu, exit_nr); 1171 r = RESUME_GUEST; 1172 } 1173 break; 1174 } 1175 case BOOK3S_INTERRUPT_FP_UNAVAIL: 1176 case BOOK3S_INTERRUPT_ALTIVEC: 1177 case BOOK3S_INTERRUPT_VSX: 1178 { 1179 int ext_msr = 0; 1180 int emul; 1181 u32 last_inst; 1182 1183 if (vcpu->arch.hflags & BOOK3S_HFLAG_PAIRED_SINGLE) { 1184 /* Do paired single instruction emulation */ 1185 emul = kvmppc_get_last_inst(vcpu, INST_GENERIC, 1186 &last_inst); 1187 if (emul == EMULATE_DONE) 1188 goto program_interrupt; 1189 else 1190 r = RESUME_GUEST; 1191 1192 break; 1193 } 1194 1195 /* Enable external provider */ 1196 switch (exit_nr) { 1197 case BOOK3S_INTERRUPT_FP_UNAVAIL: 1198 ext_msr = MSR_FP; 1199 break; 1200 1201 case BOOK3S_INTERRUPT_ALTIVEC: 1202 ext_msr = MSR_VEC; 1203 break; 1204 1205 case BOOK3S_INTERRUPT_VSX: 1206 ext_msr = MSR_VSX; 1207 break; 1208 } 1209 1210 r = kvmppc_handle_ext(vcpu, exit_nr, ext_msr); 1211 break; 1212 } 1213 case BOOK3S_INTERRUPT_ALIGNMENT: 1214 { 1215 u32 last_inst; 1216 int emul = kvmppc_get_last_inst(vcpu, INST_GENERIC, &last_inst); 1217 1218 if (emul == EMULATE_DONE) { 1219 u32 dsisr; 1220 u64 dar; 1221 1222 dsisr = kvmppc_alignment_dsisr(vcpu, last_inst); 1223 dar = kvmppc_alignment_dar(vcpu, last_inst); 1224 1225 kvmppc_set_dsisr(vcpu, dsisr); 1226 kvmppc_set_dar(vcpu, dar); 1227 1228 kvmppc_book3s_queue_irqprio(vcpu, exit_nr); 1229 } 1230 r = RESUME_GUEST; 1231 break; 1232 } 1233 #ifdef CONFIG_PPC_BOOK3S_64 1234 case BOOK3S_INTERRUPT_FAC_UNAVAIL: 1235 kvmppc_handle_fac(vcpu, vcpu->arch.shadow_fscr >> 56); 1236 r = RESUME_GUEST; 1237 break; 1238 #endif 1239 case BOOK3S_INTERRUPT_MACHINE_CHECK: 1240 kvmppc_book3s_queue_irqprio(vcpu, exit_nr); 1241 r = RESUME_GUEST; 1242 break; 1243 case BOOK3S_INTERRUPT_TRACE: 1244 if (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP) { 1245 run->exit_reason = KVM_EXIT_DEBUG; 1246 r = RESUME_HOST; 1247 } else { 1248 kvmppc_book3s_queue_irqprio(vcpu, exit_nr); 1249 r = RESUME_GUEST; 1250 } 1251 break; 1252 default: 1253 { 1254 ulong shadow_srr1 = vcpu->arch.shadow_srr1; 1255 /* Ugh - bork here! What did we get? */ 1256 printk(KERN_EMERG "exit_nr=0x%x | pc=0x%lx | msr=0x%lx\n", 1257 exit_nr, kvmppc_get_pc(vcpu), shadow_srr1); 1258 r = RESUME_HOST; 1259 BUG(); 1260 break; 1261 } 1262 } 1263 1264 if (!(r & RESUME_HOST)) { 1265 /* To avoid clobbering exit_reason, only check for signals if 1266 * we aren't already exiting to userspace for some other 1267 * reason. */ 1268 1269 /* 1270 * Interrupts could be timers for the guest which we have to 1271 * inject again, so let's postpone them until we're in the guest 1272 * and if we really did time things so badly, then we just exit 1273 * again due to a host external interrupt. 1274 */ 1275 s = kvmppc_prepare_to_enter(vcpu); 1276 if (s <= 0) 1277 r = s; 1278 else { 1279 /* interrupts now hard-disabled */ 1280 kvmppc_fix_ee_before_entry(); 1281 } 1282 1283 kvmppc_handle_lost_ext(vcpu); 1284 } 1285 1286 trace_kvm_book3s_reenter(r, vcpu); 1287 1288 return r; 1289 } 1290 1291 static int kvm_arch_vcpu_ioctl_get_sregs_pr(struct kvm_vcpu *vcpu, 1292 struct kvm_sregs *sregs) 1293 { 1294 struct kvmppc_vcpu_book3s *vcpu3s = to_book3s(vcpu); 1295 int i; 1296 1297 sregs->pvr = vcpu->arch.pvr; 1298 1299 sregs->u.s.sdr1 = to_book3s(vcpu)->sdr1; 1300 if (vcpu->arch.hflags & BOOK3S_HFLAG_SLB) { 1301 for (i = 0; i < 64; i++) { 1302 sregs->u.s.ppc64.slb[i].slbe = vcpu->arch.slb[i].orige | i; 1303 sregs->u.s.ppc64.slb[i].slbv = vcpu->arch.slb[i].origv; 1304 } 1305 } else { 1306 for (i = 0; i < 16; i++) 1307 sregs->u.s.ppc32.sr[i] = kvmppc_get_sr(vcpu, i); 1308 1309 for (i = 0; i < 8; i++) { 1310 sregs->u.s.ppc32.ibat[i] = vcpu3s->ibat[i].raw; 1311 sregs->u.s.ppc32.dbat[i] = vcpu3s->dbat[i].raw; 1312 } 1313 } 1314 1315 return 0; 1316 } 1317 1318 static int kvm_arch_vcpu_ioctl_set_sregs_pr(struct kvm_vcpu *vcpu, 1319 struct kvm_sregs *sregs) 1320 { 1321 struct kvmppc_vcpu_book3s *vcpu3s = to_book3s(vcpu); 1322 int i; 1323 1324 kvmppc_set_pvr_pr(vcpu, sregs->pvr); 1325 1326 vcpu3s->sdr1 = sregs->u.s.sdr1; 1327 if (vcpu->arch.hflags & BOOK3S_HFLAG_SLB) { 1328 for (i = 0; i < 64; i++) { 1329 vcpu->arch.mmu.slbmte(vcpu, sregs->u.s.ppc64.slb[i].slbv, 1330 sregs->u.s.ppc64.slb[i].slbe); 1331 } 1332 } else { 1333 for (i = 0; i < 16; i++) { 1334 vcpu->arch.mmu.mtsrin(vcpu, i, sregs->u.s.ppc32.sr[i]); 1335 } 1336 for (i = 0; i < 8; i++) { 1337 kvmppc_set_bat(vcpu, &(vcpu3s->ibat[i]), false, 1338 (u32)sregs->u.s.ppc32.ibat[i]); 1339 kvmppc_set_bat(vcpu, &(vcpu3s->ibat[i]), true, 1340 (u32)(sregs->u.s.ppc32.ibat[i] >> 32)); 1341 kvmppc_set_bat(vcpu, &(vcpu3s->dbat[i]), false, 1342 (u32)sregs->u.s.ppc32.dbat[i]); 1343 kvmppc_set_bat(vcpu, &(vcpu3s->dbat[i]), true, 1344 (u32)(sregs->u.s.ppc32.dbat[i] >> 32)); 1345 } 1346 } 1347 1348 /* Flush the MMU after messing with the segments */ 1349 kvmppc_mmu_pte_flush(vcpu, 0, 0); 1350 1351 return 0; 1352 } 1353 1354 static int kvmppc_get_one_reg_pr(struct kvm_vcpu *vcpu, u64 id, 1355 union kvmppc_one_reg *val) 1356 { 1357 int r = 0; 1358 1359 switch (id) { 1360 case KVM_REG_PPC_DEBUG_INST: 1361 *val = get_reg_val(id, KVMPPC_INST_SW_BREAKPOINT); 1362 break; 1363 case KVM_REG_PPC_HIOR: 1364 *val = get_reg_val(id, to_book3s(vcpu)->hior); 1365 break; 1366 case KVM_REG_PPC_VTB: 1367 *val = get_reg_val(id, to_book3s(vcpu)->vtb); 1368 break; 1369 case KVM_REG_PPC_LPCR: 1370 case KVM_REG_PPC_LPCR_64: 1371 /* 1372 * We are only interested in the LPCR_ILE bit 1373 */ 1374 if (vcpu->arch.intr_msr & MSR_LE) 1375 *val = get_reg_val(id, LPCR_ILE); 1376 else 1377 *val = get_reg_val(id, 0); 1378 break; 1379 default: 1380 r = -EINVAL; 1381 break; 1382 } 1383 1384 return r; 1385 } 1386 1387 static void kvmppc_set_lpcr_pr(struct kvm_vcpu *vcpu, u64 new_lpcr) 1388 { 1389 if (new_lpcr & LPCR_ILE) 1390 vcpu->arch.intr_msr |= MSR_LE; 1391 else 1392 vcpu->arch.intr_msr &= ~MSR_LE; 1393 } 1394 1395 static int kvmppc_set_one_reg_pr(struct kvm_vcpu *vcpu, u64 id, 1396 union kvmppc_one_reg *val) 1397 { 1398 int r = 0; 1399 1400 switch (id) { 1401 case KVM_REG_PPC_HIOR: 1402 to_book3s(vcpu)->hior = set_reg_val(id, *val); 1403 to_book3s(vcpu)->hior_explicit = true; 1404 break; 1405 case KVM_REG_PPC_VTB: 1406 to_book3s(vcpu)->vtb = set_reg_val(id, *val); 1407 break; 1408 case KVM_REG_PPC_LPCR: 1409 case KVM_REG_PPC_LPCR_64: 1410 kvmppc_set_lpcr_pr(vcpu, set_reg_val(id, *val)); 1411 break; 1412 default: 1413 r = -EINVAL; 1414 break; 1415 } 1416 1417 return r; 1418 } 1419 1420 static struct kvm_vcpu *kvmppc_core_vcpu_create_pr(struct kvm *kvm, 1421 unsigned int id) 1422 { 1423 struct kvmppc_vcpu_book3s *vcpu_book3s; 1424 struct kvm_vcpu *vcpu; 1425 int err = -ENOMEM; 1426 unsigned long p; 1427 1428 vcpu = kmem_cache_zalloc(kvm_vcpu_cache, GFP_KERNEL); 1429 if (!vcpu) 1430 goto out; 1431 1432 vcpu_book3s = vzalloc(sizeof(struct kvmppc_vcpu_book3s)); 1433 if (!vcpu_book3s) 1434 goto free_vcpu; 1435 vcpu->arch.book3s = vcpu_book3s; 1436 1437 #ifdef CONFIG_KVM_BOOK3S_32_HANDLER 1438 vcpu->arch.shadow_vcpu = 1439 kzalloc(sizeof(*vcpu->arch.shadow_vcpu), GFP_KERNEL); 1440 if (!vcpu->arch.shadow_vcpu) 1441 goto free_vcpu3s; 1442 #endif 1443 1444 err = kvm_vcpu_init(vcpu, kvm, id); 1445 if (err) 1446 goto free_shadow_vcpu; 1447 1448 err = -ENOMEM; 1449 p = __get_free_page(GFP_KERNEL|__GFP_ZERO); 1450 if (!p) 1451 goto uninit_vcpu; 1452 vcpu->arch.shared = (void *)p; 1453 #ifdef CONFIG_PPC_BOOK3S_64 1454 /* Always start the shared struct in native endian mode */ 1455 #ifdef __BIG_ENDIAN__ 1456 vcpu->arch.shared_big_endian = true; 1457 #else 1458 vcpu->arch.shared_big_endian = false; 1459 #endif 1460 1461 /* 1462 * Default to the same as the host if we're on sufficiently 1463 * recent machine that we have 1TB segments; 1464 * otherwise default to PPC970FX. 1465 */ 1466 vcpu->arch.pvr = 0x3C0301; 1467 if (mmu_has_feature(MMU_FTR_1T_SEGMENT)) 1468 vcpu->arch.pvr = mfspr(SPRN_PVR); 1469 vcpu->arch.intr_msr = MSR_SF; 1470 #else 1471 /* default to book3s_32 (750) */ 1472 vcpu->arch.pvr = 0x84202; 1473 #endif 1474 kvmppc_set_pvr_pr(vcpu, vcpu->arch.pvr); 1475 vcpu->arch.slb_nr = 64; 1476 1477 vcpu->arch.shadow_msr = MSR_USER64 & ~MSR_LE; 1478 1479 err = kvmppc_mmu_init(vcpu); 1480 if (err < 0) 1481 goto uninit_vcpu; 1482 1483 return vcpu; 1484 1485 uninit_vcpu: 1486 kvm_vcpu_uninit(vcpu); 1487 free_shadow_vcpu: 1488 #ifdef CONFIG_KVM_BOOK3S_32_HANDLER 1489 kfree(vcpu->arch.shadow_vcpu); 1490 free_vcpu3s: 1491 #endif 1492 vfree(vcpu_book3s); 1493 free_vcpu: 1494 kmem_cache_free(kvm_vcpu_cache, vcpu); 1495 out: 1496 return ERR_PTR(err); 1497 } 1498 1499 static void kvmppc_core_vcpu_free_pr(struct kvm_vcpu *vcpu) 1500 { 1501 struct kvmppc_vcpu_book3s *vcpu_book3s = to_book3s(vcpu); 1502 1503 free_page((unsigned long)vcpu->arch.shared & PAGE_MASK); 1504 kvm_vcpu_uninit(vcpu); 1505 #ifdef CONFIG_KVM_BOOK3S_32_HANDLER 1506 kfree(vcpu->arch.shadow_vcpu); 1507 #endif 1508 vfree(vcpu_book3s); 1509 kmem_cache_free(kvm_vcpu_cache, vcpu); 1510 } 1511 1512 static int kvmppc_vcpu_run_pr(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu) 1513 { 1514 int ret; 1515 #ifdef CONFIG_ALTIVEC 1516 unsigned long uninitialized_var(vrsave); 1517 #endif 1518 1519 /* Check if we can run the vcpu at all */ 1520 if (!vcpu->arch.sane) { 1521 kvm_run->exit_reason = KVM_EXIT_INTERNAL_ERROR; 1522 ret = -EINVAL; 1523 goto out; 1524 } 1525 1526 kvmppc_setup_debug(vcpu); 1527 1528 /* 1529 * Interrupts could be timers for the guest which we have to inject 1530 * again, so let's postpone them until we're in the guest and if we 1531 * really did time things so badly, then we just exit again due to 1532 * a host external interrupt. 1533 */ 1534 ret = kvmppc_prepare_to_enter(vcpu); 1535 if (ret <= 0) 1536 goto out; 1537 /* interrupts now hard-disabled */ 1538 1539 /* Save FPU, Altivec and VSX state */ 1540 giveup_all(current); 1541 1542 /* Preload FPU if it's enabled */ 1543 if (kvmppc_get_msr(vcpu) & MSR_FP) 1544 kvmppc_handle_ext(vcpu, BOOK3S_INTERRUPT_FP_UNAVAIL, MSR_FP); 1545 1546 kvmppc_fix_ee_before_entry(); 1547 1548 ret = __kvmppc_vcpu_run(kvm_run, vcpu); 1549 1550 kvmppc_clear_debug(vcpu); 1551 1552 /* No need for guest_exit. It's done in handle_exit. 1553 We also get here with interrupts enabled. */ 1554 1555 /* Make sure we save the guest FPU/Altivec/VSX state */ 1556 kvmppc_giveup_ext(vcpu, MSR_FP | MSR_VEC | MSR_VSX); 1557 1558 /* Make sure we save the guest TAR/EBB/DSCR state */ 1559 kvmppc_giveup_fac(vcpu, FSCR_TAR_LG); 1560 1561 out: 1562 vcpu->mode = OUTSIDE_GUEST_MODE; 1563 return ret; 1564 } 1565 1566 /* 1567 * Get (and clear) the dirty memory log for a memory slot. 1568 */ 1569 static int kvm_vm_ioctl_get_dirty_log_pr(struct kvm *kvm, 1570 struct kvm_dirty_log *log) 1571 { 1572 struct kvm_memslots *slots; 1573 struct kvm_memory_slot *memslot; 1574 struct kvm_vcpu *vcpu; 1575 ulong ga, ga_end; 1576 int is_dirty = 0; 1577 int r; 1578 unsigned long n; 1579 1580 mutex_lock(&kvm->slots_lock); 1581 1582 r = kvm_get_dirty_log(kvm, log, &is_dirty); 1583 if (r) 1584 goto out; 1585 1586 /* If nothing is dirty, don't bother messing with page tables. */ 1587 if (is_dirty) { 1588 slots = kvm_memslots(kvm); 1589 memslot = id_to_memslot(slots, log->slot); 1590 1591 ga = memslot->base_gfn << PAGE_SHIFT; 1592 ga_end = ga + (memslot->npages << PAGE_SHIFT); 1593 1594 kvm_for_each_vcpu(n, vcpu, kvm) 1595 kvmppc_mmu_pte_pflush(vcpu, ga, ga_end); 1596 1597 n = kvm_dirty_bitmap_bytes(memslot); 1598 memset(memslot->dirty_bitmap, 0, n); 1599 } 1600 1601 r = 0; 1602 out: 1603 mutex_unlock(&kvm->slots_lock); 1604 return r; 1605 } 1606 1607 static void kvmppc_core_flush_memslot_pr(struct kvm *kvm, 1608 struct kvm_memory_slot *memslot) 1609 { 1610 return; 1611 } 1612 1613 static int kvmppc_core_prepare_memory_region_pr(struct kvm *kvm, 1614 struct kvm_memory_slot *memslot, 1615 const struct kvm_userspace_memory_region *mem) 1616 { 1617 return 0; 1618 } 1619 1620 static void kvmppc_core_commit_memory_region_pr(struct kvm *kvm, 1621 const struct kvm_userspace_memory_region *mem, 1622 const struct kvm_memory_slot *old, 1623 const struct kvm_memory_slot *new) 1624 { 1625 return; 1626 } 1627 1628 static void kvmppc_core_free_memslot_pr(struct kvm_memory_slot *free, 1629 struct kvm_memory_slot *dont) 1630 { 1631 return; 1632 } 1633 1634 static int kvmppc_core_create_memslot_pr(struct kvm_memory_slot *slot, 1635 unsigned long npages) 1636 { 1637 return 0; 1638 } 1639 1640 1641 #ifdef CONFIG_PPC64 1642 static int kvm_vm_ioctl_get_smmu_info_pr(struct kvm *kvm, 1643 struct kvm_ppc_smmu_info *info) 1644 { 1645 long int i; 1646 struct kvm_vcpu *vcpu; 1647 1648 info->flags = 0; 1649 1650 /* SLB is always 64 entries */ 1651 info->slb_size = 64; 1652 1653 /* Standard 4k base page size segment */ 1654 info->sps[0].page_shift = 12; 1655 info->sps[0].slb_enc = 0; 1656 info->sps[0].enc[0].page_shift = 12; 1657 info->sps[0].enc[0].pte_enc = 0; 1658 1659 /* 1660 * 64k large page size. 1661 * We only want to put this in if the CPUs we're emulating 1662 * support it, but unfortunately we don't have a vcpu easily 1663 * to hand here to test. Just pick the first vcpu, and if 1664 * that doesn't exist yet, report the minimum capability, 1665 * i.e., no 64k pages. 1666 * 1T segment support goes along with 64k pages. 1667 */ 1668 i = 1; 1669 vcpu = kvm_get_vcpu(kvm, 0); 1670 if (vcpu && (vcpu->arch.hflags & BOOK3S_HFLAG_MULTI_PGSIZE)) { 1671 info->flags = KVM_PPC_1T_SEGMENTS; 1672 info->sps[i].page_shift = 16; 1673 info->sps[i].slb_enc = SLB_VSID_L | SLB_VSID_LP_01; 1674 info->sps[i].enc[0].page_shift = 16; 1675 info->sps[i].enc[0].pte_enc = 1; 1676 ++i; 1677 } 1678 1679 /* Standard 16M large page size segment */ 1680 info->sps[i].page_shift = 24; 1681 info->sps[i].slb_enc = SLB_VSID_L; 1682 info->sps[i].enc[0].page_shift = 24; 1683 info->sps[i].enc[0].pte_enc = 0; 1684 1685 return 0; 1686 } 1687 #else 1688 static int kvm_vm_ioctl_get_smmu_info_pr(struct kvm *kvm, 1689 struct kvm_ppc_smmu_info *info) 1690 { 1691 /* We should not get called */ 1692 BUG(); 1693 } 1694 #endif /* CONFIG_PPC64 */ 1695 1696 static unsigned int kvm_global_user_count = 0; 1697 static DEFINE_SPINLOCK(kvm_global_user_count_lock); 1698 1699 static int kvmppc_core_init_vm_pr(struct kvm *kvm) 1700 { 1701 mutex_init(&kvm->arch.hpt_mutex); 1702 1703 #ifdef CONFIG_PPC_BOOK3S_64 1704 /* Start out with the default set of hcalls enabled */ 1705 kvmppc_pr_init_default_hcalls(kvm); 1706 #endif 1707 1708 if (firmware_has_feature(FW_FEATURE_SET_MODE)) { 1709 spin_lock(&kvm_global_user_count_lock); 1710 if (++kvm_global_user_count == 1) 1711 pseries_disable_reloc_on_exc(); 1712 spin_unlock(&kvm_global_user_count_lock); 1713 } 1714 return 0; 1715 } 1716 1717 static void kvmppc_core_destroy_vm_pr(struct kvm *kvm) 1718 { 1719 #ifdef CONFIG_PPC64 1720 WARN_ON(!list_empty(&kvm->arch.spapr_tce_tables)); 1721 #endif 1722 1723 if (firmware_has_feature(FW_FEATURE_SET_MODE)) { 1724 spin_lock(&kvm_global_user_count_lock); 1725 BUG_ON(kvm_global_user_count == 0); 1726 if (--kvm_global_user_count == 0) 1727 pseries_enable_reloc_on_exc(); 1728 spin_unlock(&kvm_global_user_count_lock); 1729 } 1730 } 1731 1732 static int kvmppc_core_check_processor_compat_pr(void) 1733 { 1734 /* 1735 * Disable KVM for Power9 untill the required bits merged. 1736 */ 1737 if (cpu_has_feature(CPU_FTR_ARCH_300)) 1738 return -EIO; 1739 return 0; 1740 } 1741 1742 static long kvm_arch_vm_ioctl_pr(struct file *filp, 1743 unsigned int ioctl, unsigned long arg) 1744 { 1745 return -ENOTTY; 1746 } 1747 1748 static struct kvmppc_ops kvm_ops_pr = { 1749 .get_sregs = kvm_arch_vcpu_ioctl_get_sregs_pr, 1750 .set_sregs = kvm_arch_vcpu_ioctl_set_sregs_pr, 1751 .get_one_reg = kvmppc_get_one_reg_pr, 1752 .set_one_reg = kvmppc_set_one_reg_pr, 1753 .vcpu_load = kvmppc_core_vcpu_load_pr, 1754 .vcpu_put = kvmppc_core_vcpu_put_pr, 1755 .set_msr = kvmppc_set_msr_pr, 1756 .vcpu_run = kvmppc_vcpu_run_pr, 1757 .vcpu_create = kvmppc_core_vcpu_create_pr, 1758 .vcpu_free = kvmppc_core_vcpu_free_pr, 1759 .check_requests = kvmppc_core_check_requests_pr, 1760 .get_dirty_log = kvm_vm_ioctl_get_dirty_log_pr, 1761 .flush_memslot = kvmppc_core_flush_memslot_pr, 1762 .prepare_memory_region = kvmppc_core_prepare_memory_region_pr, 1763 .commit_memory_region = kvmppc_core_commit_memory_region_pr, 1764 .unmap_hva = kvm_unmap_hva_pr, 1765 .unmap_hva_range = kvm_unmap_hva_range_pr, 1766 .age_hva = kvm_age_hva_pr, 1767 .test_age_hva = kvm_test_age_hva_pr, 1768 .set_spte_hva = kvm_set_spte_hva_pr, 1769 .mmu_destroy = kvmppc_mmu_destroy_pr, 1770 .free_memslot = kvmppc_core_free_memslot_pr, 1771 .create_memslot = kvmppc_core_create_memslot_pr, 1772 .init_vm = kvmppc_core_init_vm_pr, 1773 .destroy_vm = kvmppc_core_destroy_vm_pr, 1774 .get_smmu_info = kvm_vm_ioctl_get_smmu_info_pr, 1775 .emulate_op = kvmppc_core_emulate_op_pr, 1776 .emulate_mtspr = kvmppc_core_emulate_mtspr_pr, 1777 .emulate_mfspr = kvmppc_core_emulate_mfspr_pr, 1778 .fast_vcpu_kick = kvm_vcpu_kick, 1779 .arch_vm_ioctl = kvm_arch_vm_ioctl_pr, 1780 #ifdef CONFIG_PPC_BOOK3S_64 1781 .hcall_implemented = kvmppc_hcall_impl_pr, 1782 #endif 1783 }; 1784 1785 1786 int kvmppc_book3s_init_pr(void) 1787 { 1788 int r; 1789 1790 r = kvmppc_core_check_processor_compat_pr(); 1791 if (r < 0) 1792 return r; 1793 1794 kvm_ops_pr.owner = THIS_MODULE; 1795 kvmppc_pr_ops = &kvm_ops_pr; 1796 1797 r = kvmppc_mmu_hpte_sysinit(); 1798 return r; 1799 } 1800 1801 void kvmppc_book3s_exit_pr(void) 1802 { 1803 kvmppc_pr_ops = NULL; 1804 kvmppc_mmu_hpte_sysexit(); 1805 } 1806 1807 /* 1808 * We only support separate modules for book3s 64 1809 */ 1810 #ifdef CONFIG_PPC_BOOK3S_64 1811 1812 module_init(kvmppc_book3s_init_pr); 1813 module_exit(kvmppc_book3s_exit_pr); 1814 1815 MODULE_LICENSE("GPL"); 1816 MODULE_ALIAS_MISCDEV(KVM_MINOR); 1817 MODULE_ALIAS("devname:kvm"); 1818 #endif 1819