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/hvcall.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 54static int kvmppc_handle_ext(struct kvm_vcpu *vcpu, unsigned int exit_nr, 55 ulong msr); 56static 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 65static 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 71static 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 92void kvmppc_unfixup_split_real(struct kvm_vcpu *vcpu); 93 94static 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 118static 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 */ 145void 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 */ 182void 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 vcpu->arch.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 234out: 235 preempt_enable(); 236} 237 238static 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 *************/ 251static 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 281static 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 290static 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 298static 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 305static int kvm_test_age_hva_pr(struct kvm *kvm, unsigned long hva) 306{ 307 /* XXX could be more clever ;) */ 308 return 0; 309} 310 311static 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 319static 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 337static 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 402void 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 vcpu->arch.hflags |= BOOK3S_HFLAG_MULTI_PGSIZE | 452 BOOK3S_HFLAG_NEW_TLBIE; 453 break; 454 } 455 456#ifdef CONFIG_PPC_BOOK3S_32 457 /* 32 bit Book3S always has 32 byte dcbz */ 458 vcpu->arch.hflags |= BOOK3S_HFLAG_DCBZ32; 459#endif 460 461 /* On some CPUs we can execute paired single operations natively */ 462 asm ( "mfpvr %0" : "=r"(host_pvr)); 463 switch (host_pvr) { 464 case 0x00080200: /* lonestar 2.0 */ 465 case 0x00088202: /* lonestar 2.2 */ 466 case 0x70000100: /* gekko 1.0 */ 467 case 0x00080100: /* gekko 2.0 */ 468 case 0x00083203: /* gekko 2.3a */ 469 case 0x00083213: /* gekko 2.3b */ 470 case 0x00083204: /* gekko 2.4 */ 471 case 0x00083214: /* gekko 2.4e (8SE) - retail HW2 */ 472 case 0x00087200: /* broadway */ 473 vcpu->arch.hflags |= BOOK3S_HFLAG_NATIVE_PS; 474 /* Enable HID2.PSE - in case we need it later */ 475 mtspr(SPRN_HID2_GEKKO, mfspr(SPRN_HID2_GEKKO) | (1 << 29)); 476 } 477} 478 479/* Book3s_32 CPUs always have 32 bytes cache line size, which Linux assumes. To 480 * make Book3s_32 Linux work on Book3s_64, we have to make sure we trap dcbz to 481 * emulate 32 bytes dcbz length. 482 * 483 * The Book3s_64 inventors also realized this case and implemented a special bit 484 * in the HID5 register, which is a hypervisor ressource. Thus we can't use it. 485 * 486 * My approach here is to patch the dcbz instruction on executing pages. 487 */ 488static void kvmppc_patch_dcbz(struct kvm_vcpu *vcpu, struct kvmppc_pte *pte) 489{ 490 struct page *hpage; 491 u64 hpage_offset; 492 u32 *page; 493 int i; 494 495 hpage = gfn_to_page(vcpu->kvm, pte->raddr >> PAGE_SHIFT); 496 if (is_error_page(hpage)) 497 return; 498 499 hpage_offset = pte->raddr & ~PAGE_MASK; 500 hpage_offset &= ~0xFFFULL; 501 hpage_offset /= 4; 502 503 get_page(hpage); 504 page = kmap_atomic(hpage); 505 506 /* patch dcbz into reserved instruction, so we trap */ 507 for (i=hpage_offset; i < hpage_offset + (HW_PAGE_SIZE / 4); i++) 508 if ((be32_to_cpu(page[i]) & 0xff0007ff) == INS_DCBZ) 509 page[i] &= cpu_to_be32(0xfffffff7); 510 511 kunmap_atomic(page); 512 put_page(hpage); 513} 514 515static int kvmppc_visible_gpa(struct kvm_vcpu *vcpu, gpa_t gpa) 516{ 517 ulong mp_pa = vcpu->arch.magic_page_pa; 518 519 if (!(kvmppc_get_msr(vcpu) & MSR_SF)) 520 mp_pa = (uint32_t)mp_pa; 521 522 gpa &= ~0xFFFULL; 523 if (unlikely(mp_pa) && unlikely((mp_pa & KVM_PAM) == (gpa & KVM_PAM))) { 524 return 1; 525 } 526 527 return kvm_is_visible_gfn(vcpu->kvm, gpa >> PAGE_SHIFT); 528} 529 530int kvmppc_handle_pagefault(struct kvm_run *run, struct kvm_vcpu *vcpu, 531 ulong eaddr, int vec) 532{ 533 bool data = (vec == BOOK3S_INTERRUPT_DATA_STORAGE); 534 bool iswrite = false; 535 int r = RESUME_GUEST; 536 int relocated; 537 int page_found = 0; 538 struct kvmppc_pte pte; 539 bool is_mmio = false; 540 bool dr = (kvmppc_get_msr(vcpu) & MSR_DR) ? true : false; 541 bool ir = (kvmppc_get_msr(vcpu) & MSR_IR) ? true : false; 542 u64 vsid; 543 544 relocated = data ? dr : ir; 545 if (data && (vcpu->arch.fault_dsisr & DSISR_ISSTORE)) 546 iswrite = true; 547 548 /* Resolve real address if translation turned on */ 549 if (relocated) { 550 page_found = vcpu->arch.mmu.xlate(vcpu, eaddr, &pte, data, iswrite); 551 } else { 552 pte.may_execute = true; 553 pte.may_read = true; 554 pte.may_write = true; 555 pte.raddr = eaddr & KVM_PAM; 556 pte.eaddr = eaddr; 557 pte.vpage = eaddr >> 12; 558 pte.page_size = MMU_PAGE_64K; 559 } 560 561 switch (kvmppc_get_msr(vcpu) & (MSR_DR|MSR_IR)) { 562 case 0: 563 pte.vpage |= ((u64)VSID_REAL << (SID_SHIFT - 12)); 564 break; 565 case MSR_DR: 566 if (!data && 567 (vcpu->arch.hflags & BOOK3S_HFLAG_SPLIT_HACK) && 568 ((pte.raddr & SPLIT_HACK_MASK) == SPLIT_HACK_OFFS)) 569 pte.raddr &= ~SPLIT_HACK_MASK; 570 /* fall through */ 571 case MSR_IR: 572 vcpu->arch.mmu.esid_to_vsid(vcpu, eaddr >> SID_SHIFT, &vsid); 573 574 if ((kvmppc_get_msr(vcpu) & (MSR_DR|MSR_IR)) == MSR_DR) 575 pte.vpage |= ((u64)VSID_REAL_DR << (SID_SHIFT - 12)); 576 else 577 pte.vpage |= ((u64)VSID_REAL_IR << (SID_SHIFT - 12)); 578 pte.vpage |= vsid; 579 580 if (vsid == -1) 581 page_found = -EINVAL; 582 break; 583 } 584 585 if (vcpu->arch.mmu.is_dcbz32(vcpu) && 586 (!(vcpu->arch.hflags & BOOK3S_HFLAG_DCBZ32))) { 587 /* 588 * If we do the dcbz hack, we have to NX on every execution, 589 * so we can patch the executing code. This renders our guest 590 * NX-less. 591 */ 592 pte.may_execute = !data; 593 } 594 595 if (page_found == -ENOENT) { 596 /* Page not found in guest PTE entries */ 597 u64 ssrr1 = vcpu->arch.shadow_srr1; 598 u64 msr = kvmppc_get_msr(vcpu); 599 kvmppc_set_dar(vcpu, kvmppc_get_fault_dar(vcpu)); 600 kvmppc_set_dsisr(vcpu, vcpu->arch.fault_dsisr); 601 kvmppc_set_msr_fast(vcpu, msr | (ssrr1 & 0xf8000000ULL)); 602 kvmppc_book3s_queue_irqprio(vcpu, vec); 603 } else if (page_found == -EPERM) { 604 /* Storage protection */ 605 u32 dsisr = vcpu->arch.fault_dsisr; 606 u64 ssrr1 = vcpu->arch.shadow_srr1; 607 u64 msr = kvmppc_get_msr(vcpu); 608 kvmppc_set_dar(vcpu, kvmppc_get_fault_dar(vcpu)); 609 dsisr = (dsisr & ~DSISR_NOHPTE) | DSISR_PROTFAULT; 610 kvmppc_set_dsisr(vcpu, dsisr); 611 kvmppc_set_msr_fast(vcpu, msr | (ssrr1 & 0xf8000000ULL)); 612 kvmppc_book3s_queue_irqprio(vcpu, vec); 613 } else if (page_found == -EINVAL) { 614 /* Page not found in guest SLB */ 615 kvmppc_set_dar(vcpu, kvmppc_get_fault_dar(vcpu)); 616 kvmppc_book3s_queue_irqprio(vcpu, vec + 0x80); 617 } else if (!is_mmio && 618 kvmppc_visible_gpa(vcpu, pte.raddr)) { 619 if (data && !(vcpu->arch.fault_dsisr & DSISR_NOHPTE)) { 620 /* 621 * There is already a host HPTE there, presumably 622 * a read-only one for a page the guest thinks 623 * is writable, so get rid of it first. 624 */ 625 kvmppc_mmu_unmap_page(vcpu, &pte); 626 } 627 /* The guest's PTE is not mapped yet. Map on the host */ 628 kvmppc_mmu_map_page(vcpu, &pte, iswrite); 629 if (data) 630 vcpu->stat.sp_storage++; 631 else if (vcpu->arch.mmu.is_dcbz32(vcpu) && 632 (!(vcpu->arch.hflags & BOOK3S_HFLAG_DCBZ32))) 633 kvmppc_patch_dcbz(vcpu, &pte); 634 } else { 635 /* MMIO */ 636 vcpu->stat.mmio_exits++; 637 vcpu->arch.paddr_accessed = pte.raddr; 638 vcpu->arch.vaddr_accessed = pte.eaddr; 639 r = kvmppc_emulate_mmio(run, vcpu); 640 if ( r == RESUME_HOST_NV ) 641 r = RESUME_HOST; 642 } 643 644 return r; 645} 646 647/* Give up external provider (FPU, Altivec, VSX) */ 648void kvmppc_giveup_ext(struct kvm_vcpu *vcpu, ulong msr) 649{ 650 struct thread_struct *t = ¤t->thread; 651 652 /* 653 * VSX instructions can access FP and vector registers, so if 654 * we are giving up VSX, make sure we give up FP and VMX as well. 655 */ 656 if (msr & MSR_VSX) 657 msr |= MSR_FP | MSR_VEC; 658 659 msr &= vcpu->arch.guest_owned_ext; 660 if (!msr) 661 return; 662 663#ifdef DEBUG_EXT 664 printk(KERN_INFO "Giving up ext 0x%lx\n", msr); 665#endif 666 667 if (msr & MSR_FP) { 668 /* 669 * Note that on CPUs with VSX, giveup_fpu stores 670 * both the traditional FP registers and the added VSX 671 * registers into thread.fp_state.fpr[]. 672 */ 673 if (t->regs->msr & MSR_FP) 674 giveup_fpu(current); 675 t->fp_save_area = NULL; 676 } 677 678#ifdef CONFIG_ALTIVEC 679 if (msr & MSR_VEC) { 680 if (current->thread.regs->msr & MSR_VEC) 681 giveup_altivec(current); 682 t->vr_save_area = NULL; 683 } 684#endif 685 686 vcpu->arch.guest_owned_ext &= ~(msr | MSR_VSX); 687 kvmppc_recalc_shadow_msr(vcpu); 688} 689 690/* Give up facility (TAR / EBB / DSCR) */ 691static void kvmppc_giveup_fac(struct kvm_vcpu *vcpu, ulong fac) 692{ 693#ifdef CONFIG_PPC_BOOK3S_64 694 if (!(vcpu->arch.shadow_fscr & (1ULL << fac))) { 695 /* Facility not available to the guest, ignore giveup request*/ 696 return; 697 } 698 699 switch (fac) { 700 case FSCR_TAR_LG: 701 vcpu->arch.tar = mfspr(SPRN_TAR); 702 mtspr(SPRN_TAR, current->thread.tar); 703 vcpu->arch.shadow_fscr &= ~FSCR_TAR; 704 break; 705 } 706#endif 707} 708 709/* Handle external providers (FPU, Altivec, VSX) */ 710static int kvmppc_handle_ext(struct kvm_vcpu *vcpu, unsigned int exit_nr, 711 ulong msr) 712{ 713 struct thread_struct *t = ¤t->thread; 714 715 /* When we have paired singles, we emulate in software */ 716 if (vcpu->arch.hflags & BOOK3S_HFLAG_PAIRED_SINGLE) 717 return RESUME_GUEST; 718 719 if (!(kvmppc_get_msr(vcpu) & msr)) { 720 kvmppc_book3s_queue_irqprio(vcpu, exit_nr); 721 return RESUME_GUEST; 722 } 723 724 if (msr == MSR_VSX) { 725 /* No VSX? Give an illegal instruction interrupt */ 726#ifdef CONFIG_VSX 727 if (!cpu_has_feature(CPU_FTR_VSX)) 728#endif 729 { 730 kvmppc_core_queue_program(vcpu, SRR1_PROGILL); 731 return RESUME_GUEST; 732 } 733 734 /* 735 * We have to load up all the FP and VMX registers before 736 * we can let the guest use VSX instructions. 737 */ 738 msr = MSR_FP | MSR_VEC | MSR_VSX; 739 } 740 741 /* See if we already own all the ext(s) needed */ 742 msr &= ~vcpu->arch.guest_owned_ext; 743 if (!msr) 744 return RESUME_GUEST; 745 746#ifdef DEBUG_EXT 747 printk(KERN_INFO "Loading up ext 0x%lx\n", msr); 748#endif 749 750 if (msr & MSR_FP) { 751 preempt_disable(); 752 enable_kernel_fp(); 753 load_fp_state(&vcpu->arch.fp); 754 t->fp_save_area = &vcpu->arch.fp; 755 preempt_enable(); 756 } 757 758 if (msr & MSR_VEC) { 759#ifdef CONFIG_ALTIVEC 760 preempt_disable(); 761 enable_kernel_altivec(); 762 load_vr_state(&vcpu->arch.vr); 763 t->vr_save_area = &vcpu->arch.vr; 764 preempt_enable(); 765#endif 766 } 767 768 t->regs->msr |= msr; 769 vcpu->arch.guest_owned_ext |= msr; 770 kvmppc_recalc_shadow_msr(vcpu); 771 772 return RESUME_GUEST; 773} 774 775/* 776 * Kernel code using FP or VMX could have flushed guest state to 777 * the thread_struct; if so, get it back now. 778 */ 779static void kvmppc_handle_lost_ext(struct kvm_vcpu *vcpu) 780{ 781 unsigned long lost_ext; 782 783 lost_ext = vcpu->arch.guest_owned_ext & ~current->thread.regs->msr; 784 if (!lost_ext) 785 return; 786 787 if (lost_ext & MSR_FP) { 788 preempt_disable(); 789 enable_kernel_fp(); 790 load_fp_state(&vcpu->arch.fp); 791 preempt_enable(); 792 } 793#ifdef CONFIG_ALTIVEC 794 if (lost_ext & MSR_VEC) { 795 preempt_disable(); 796 enable_kernel_altivec(); 797 load_vr_state(&vcpu->arch.vr); 798 preempt_enable(); 799 } 800#endif 801 current->thread.regs->msr |= lost_ext; 802} 803 804#ifdef CONFIG_PPC_BOOK3S_64 805 806static void kvmppc_trigger_fac_interrupt(struct kvm_vcpu *vcpu, ulong fac) 807{ 808 /* Inject the Interrupt Cause field and trigger a guest interrupt */ 809 vcpu->arch.fscr &= ~(0xffULL << 56); 810 vcpu->arch.fscr |= (fac << 56); 811 kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_FAC_UNAVAIL); 812} 813 814static void kvmppc_emulate_fac(struct kvm_vcpu *vcpu, ulong fac) 815{ 816 enum emulation_result er = EMULATE_FAIL; 817 818 if (!(kvmppc_get_msr(vcpu) & MSR_PR)) 819 er = kvmppc_emulate_instruction(vcpu->run, vcpu); 820 821 if ((er != EMULATE_DONE) && (er != EMULATE_AGAIN)) { 822 /* Couldn't emulate, trigger interrupt in guest */ 823 kvmppc_trigger_fac_interrupt(vcpu, fac); 824 } 825} 826 827/* Enable facilities (TAR, EBB, DSCR) for the guest */ 828static int kvmppc_handle_fac(struct kvm_vcpu *vcpu, ulong fac) 829{ 830 bool guest_fac_enabled; 831 BUG_ON(!cpu_has_feature(CPU_FTR_ARCH_207S)); 832 833 /* 834 * Not every facility is enabled by FSCR bits, check whether the 835 * guest has this facility enabled at all. 836 */ 837 switch (fac) { 838 case FSCR_TAR_LG: 839 case FSCR_EBB_LG: 840 guest_fac_enabled = (vcpu->arch.fscr & (1ULL << fac)); 841 break; 842 case FSCR_TM_LG: 843 guest_fac_enabled = kvmppc_get_msr(vcpu) & MSR_TM; 844 break; 845 default: 846 guest_fac_enabled = false; 847 break; 848 } 849 850 if (!guest_fac_enabled) { 851 /* Facility not enabled by the guest */ 852 kvmppc_trigger_fac_interrupt(vcpu, fac); 853 return RESUME_GUEST; 854 } 855 856 switch (fac) { 857 case FSCR_TAR_LG: 858 /* TAR switching isn't lazy in Linux yet */ 859 current->thread.tar = mfspr(SPRN_TAR); 860 mtspr(SPRN_TAR, vcpu->arch.tar); 861 vcpu->arch.shadow_fscr |= FSCR_TAR; 862 break; 863 default: 864 kvmppc_emulate_fac(vcpu, fac); 865 break; 866 } 867 868 return RESUME_GUEST; 869} 870 871void kvmppc_set_fscr(struct kvm_vcpu *vcpu, u64 fscr) 872{ 873 if ((vcpu->arch.fscr & FSCR_TAR) && !(fscr & FSCR_TAR)) { 874 /* TAR got dropped, drop it in shadow too */ 875 kvmppc_giveup_fac(vcpu, FSCR_TAR_LG); 876 } 877 vcpu->arch.fscr = fscr; 878} 879#endif 880 881int kvmppc_handle_exit_pr(struct kvm_run *run, struct kvm_vcpu *vcpu, 882 unsigned int exit_nr) 883{ 884 int r = RESUME_HOST; 885 int s; 886 887 vcpu->stat.sum_exits++; 888 889 run->exit_reason = KVM_EXIT_UNKNOWN; 890 run->ready_for_interrupt_injection = 1; 891 892 /* We get here with MSR.EE=1 */ 893 894 trace_kvm_exit(exit_nr, vcpu); 895 kvm_guest_exit(); 896 897 switch (exit_nr) { 898 case BOOK3S_INTERRUPT_INST_STORAGE: 899 { 900 ulong shadow_srr1 = vcpu->arch.shadow_srr1; 901 vcpu->stat.pf_instruc++; 902 903 if (kvmppc_is_split_real(vcpu)) 904 kvmppc_fixup_split_real(vcpu); 905 906#ifdef CONFIG_PPC_BOOK3S_32 907 /* We set segments as unused segments when invalidating them. So 908 * treat the respective fault as segment fault. */ 909 { 910 struct kvmppc_book3s_shadow_vcpu *svcpu; 911 u32 sr; 912 913 svcpu = svcpu_get(vcpu); 914 sr = svcpu->sr[kvmppc_get_pc(vcpu) >> SID_SHIFT]; 915 svcpu_put(svcpu); 916 if (sr == SR_INVALID) { 917 kvmppc_mmu_map_segment(vcpu, kvmppc_get_pc(vcpu)); 918 r = RESUME_GUEST; 919 break; 920 } 921 } 922#endif 923 924 /* only care about PTEG not found errors, but leave NX alone */ 925 if (shadow_srr1 & 0x40000000) { 926 int idx = srcu_read_lock(&vcpu->kvm->srcu); 927 r = kvmppc_handle_pagefault(run, vcpu, kvmppc_get_pc(vcpu), exit_nr); 928 srcu_read_unlock(&vcpu->kvm->srcu, idx); 929 vcpu->stat.sp_instruc++; 930 } else if (vcpu->arch.mmu.is_dcbz32(vcpu) && 931 (!(vcpu->arch.hflags & BOOK3S_HFLAG_DCBZ32))) { 932 /* 933 * XXX If we do the dcbz hack we use the NX bit to flush&patch the page, 934 * so we can't use the NX bit inside the guest. Let's cross our fingers, 935 * that no guest that needs the dcbz hack does NX. 936 */ 937 kvmppc_mmu_pte_flush(vcpu, kvmppc_get_pc(vcpu), ~0xFFFUL); 938 r = RESUME_GUEST; 939 } else { 940 u64 msr = kvmppc_get_msr(vcpu); 941 msr |= shadow_srr1 & 0x58000000; 942 kvmppc_set_msr_fast(vcpu, msr); 943 kvmppc_book3s_queue_irqprio(vcpu, exit_nr); 944 r = RESUME_GUEST; 945 } 946 break; 947 } 948 case BOOK3S_INTERRUPT_DATA_STORAGE: 949 { 950 ulong dar = kvmppc_get_fault_dar(vcpu); 951 u32 fault_dsisr = vcpu->arch.fault_dsisr; 952 vcpu->stat.pf_storage++; 953 954#ifdef CONFIG_PPC_BOOK3S_32 955 /* We set segments as unused segments when invalidating them. So 956 * treat the respective fault as segment fault. */ 957 { 958 struct kvmppc_book3s_shadow_vcpu *svcpu; 959 u32 sr; 960 961 svcpu = svcpu_get(vcpu); 962 sr = svcpu->sr[dar >> SID_SHIFT]; 963 svcpu_put(svcpu); 964 if (sr == SR_INVALID) { 965 kvmppc_mmu_map_segment(vcpu, dar); 966 r = RESUME_GUEST; 967 break; 968 } 969 } 970#endif 971 972 /* 973 * We need to handle missing shadow PTEs, and 974 * protection faults due to us mapping a page read-only 975 * when the guest thinks it is writable. 976 */ 977 if (fault_dsisr & (DSISR_NOHPTE | DSISR_PROTFAULT)) { 978 int idx = srcu_read_lock(&vcpu->kvm->srcu); 979 r = kvmppc_handle_pagefault(run, vcpu, dar, exit_nr); 980 srcu_read_unlock(&vcpu->kvm->srcu, idx); 981 } else { 982 kvmppc_set_dar(vcpu, dar); 983 kvmppc_set_dsisr(vcpu, fault_dsisr); 984 kvmppc_book3s_queue_irqprio(vcpu, exit_nr); 985 r = RESUME_GUEST; 986 } 987 break; 988 } 989 case BOOK3S_INTERRUPT_DATA_SEGMENT: 990 if (kvmppc_mmu_map_segment(vcpu, kvmppc_get_fault_dar(vcpu)) < 0) { 991 kvmppc_set_dar(vcpu, kvmppc_get_fault_dar(vcpu)); 992 kvmppc_book3s_queue_irqprio(vcpu, 993 BOOK3S_INTERRUPT_DATA_SEGMENT); 994 } 995 r = RESUME_GUEST; 996 break; 997 case BOOK3S_INTERRUPT_INST_SEGMENT: 998 if (kvmppc_mmu_map_segment(vcpu, kvmppc_get_pc(vcpu)) < 0) { 999 kvmppc_book3s_queue_irqprio(vcpu, 1000 BOOK3S_INTERRUPT_INST_SEGMENT); 1001 } 1002 r = RESUME_GUEST; 1003 break; 1004 /* We're good on these - the host merely wanted to get our attention */ 1005 case BOOK3S_INTERRUPT_DECREMENTER: 1006 case BOOK3S_INTERRUPT_HV_DECREMENTER: 1007 case BOOK3S_INTERRUPT_DOORBELL: 1008 case BOOK3S_INTERRUPT_H_DOORBELL: 1009 vcpu->stat.dec_exits++; 1010 r = RESUME_GUEST; 1011 break; 1012 case BOOK3S_INTERRUPT_EXTERNAL: 1013 case BOOK3S_INTERRUPT_EXTERNAL_LEVEL: 1014 case BOOK3S_INTERRUPT_EXTERNAL_HV: 1015 vcpu->stat.ext_intr_exits++; 1016 r = RESUME_GUEST; 1017 break; 1018 case BOOK3S_INTERRUPT_PERFMON: 1019 r = RESUME_GUEST; 1020 break; 1021 case BOOK3S_INTERRUPT_PROGRAM: 1022 case BOOK3S_INTERRUPT_H_EMUL_ASSIST: 1023 { 1024 enum emulation_result er; 1025 ulong flags; 1026 u32 last_inst; 1027 int emul; 1028 1029program_interrupt: 1030 flags = vcpu->arch.shadow_srr1 & 0x1f0000ull; 1031 1032 emul = kvmppc_get_last_inst(vcpu, INST_GENERIC, &last_inst); 1033 if (emul != EMULATE_DONE) { 1034 r = RESUME_GUEST; 1035 break; 1036 } 1037 1038 if (kvmppc_get_msr(vcpu) & MSR_PR) { 1039#ifdef EXIT_DEBUG 1040 pr_info("Userspace triggered 0x700 exception at\n 0x%lx (0x%x)\n", 1041 kvmppc_get_pc(vcpu), last_inst); 1042#endif 1043 if ((last_inst & 0xff0007ff) != 1044 (INS_DCBZ & 0xfffffff7)) { 1045 kvmppc_core_queue_program(vcpu, flags); 1046 r = RESUME_GUEST; 1047 break; 1048 } 1049 } 1050 1051 vcpu->stat.emulated_inst_exits++; 1052 er = kvmppc_emulate_instruction(run, vcpu); 1053 switch (er) { 1054 case EMULATE_DONE: 1055 r = RESUME_GUEST_NV; 1056 break; 1057 case EMULATE_AGAIN: 1058 r = RESUME_GUEST; 1059 break; 1060 case EMULATE_FAIL: 1061 printk(KERN_CRIT "%s: emulation at %lx failed (%08x)\n", 1062 __func__, kvmppc_get_pc(vcpu), last_inst); 1063 kvmppc_core_queue_program(vcpu, flags); 1064 r = RESUME_GUEST; 1065 break; 1066 case EMULATE_DO_MMIO: 1067 run->exit_reason = KVM_EXIT_MMIO; 1068 r = RESUME_HOST_NV; 1069 break; 1070 case EMULATE_EXIT_USER: 1071 r = RESUME_HOST_NV; 1072 break; 1073 default: 1074 BUG(); 1075 } 1076 break; 1077 } 1078 case BOOK3S_INTERRUPT_SYSCALL: 1079 { 1080 u32 last_sc; 1081 int emul; 1082 1083 /* Get last sc for papr */ 1084 if (vcpu->arch.papr_enabled) { 1085 /* The sc instuction points SRR0 to the next inst */ 1086 emul = kvmppc_get_last_inst(vcpu, INST_SC, &last_sc); 1087 if (emul != EMULATE_DONE) { 1088 kvmppc_set_pc(vcpu, kvmppc_get_pc(vcpu) - 4); 1089 r = RESUME_GUEST; 1090 break; 1091 } 1092 } 1093 1094 if (vcpu->arch.papr_enabled && 1095 (last_sc == 0x44000022) && 1096 !(kvmppc_get_msr(vcpu) & MSR_PR)) { 1097 /* SC 1 papr hypercalls */ 1098 ulong cmd = kvmppc_get_gpr(vcpu, 3); 1099 int i; 1100 1101#ifdef CONFIG_PPC_BOOK3S_64 1102 if (kvmppc_h_pr(vcpu, cmd) == EMULATE_DONE) { 1103 r = RESUME_GUEST; 1104 break; 1105 } 1106#endif 1107 1108 run->papr_hcall.nr = cmd; 1109 for (i = 0; i < 9; ++i) { 1110 ulong gpr = kvmppc_get_gpr(vcpu, 4 + i); 1111 run->papr_hcall.args[i] = gpr; 1112 } 1113 run->exit_reason = KVM_EXIT_PAPR_HCALL; 1114 vcpu->arch.hcall_needed = 1; 1115 r = RESUME_HOST; 1116 } else if (vcpu->arch.osi_enabled && 1117 (((u32)kvmppc_get_gpr(vcpu, 3)) == OSI_SC_MAGIC_R3) && 1118 (((u32)kvmppc_get_gpr(vcpu, 4)) == OSI_SC_MAGIC_R4)) { 1119 /* MOL hypercalls */ 1120 u64 *gprs = run->osi.gprs; 1121 int i; 1122 1123 run->exit_reason = KVM_EXIT_OSI; 1124 for (i = 0; i < 32; i++) 1125 gprs[i] = kvmppc_get_gpr(vcpu, i); 1126 vcpu->arch.osi_needed = 1; 1127 r = RESUME_HOST_NV; 1128 } else if (!(kvmppc_get_msr(vcpu) & MSR_PR) && 1129 (((u32)kvmppc_get_gpr(vcpu, 0)) == KVM_SC_MAGIC_R0)) { 1130 /* KVM PV hypercalls */ 1131 kvmppc_set_gpr(vcpu, 3, kvmppc_kvm_pv(vcpu)); 1132 r = RESUME_GUEST; 1133 } else { 1134 /* Guest syscalls */ 1135 vcpu->stat.syscall_exits++; 1136 kvmppc_book3s_queue_irqprio(vcpu, exit_nr); 1137 r = RESUME_GUEST; 1138 } 1139 break; 1140 } 1141 case BOOK3S_INTERRUPT_FP_UNAVAIL: 1142 case BOOK3S_INTERRUPT_ALTIVEC: 1143 case BOOK3S_INTERRUPT_VSX: 1144 { 1145 int ext_msr = 0; 1146 int emul; 1147 u32 last_inst; 1148 1149 if (vcpu->arch.hflags & BOOK3S_HFLAG_PAIRED_SINGLE) { 1150 /* Do paired single instruction emulation */ 1151 emul = kvmppc_get_last_inst(vcpu, INST_GENERIC, 1152 &last_inst); 1153 if (emul == EMULATE_DONE) 1154 goto program_interrupt; 1155 else 1156 r = RESUME_GUEST; 1157 1158 break; 1159 } 1160 1161 /* Enable external provider */ 1162 switch (exit_nr) { 1163 case BOOK3S_INTERRUPT_FP_UNAVAIL: 1164 ext_msr = MSR_FP; 1165 break; 1166 1167 case BOOK3S_INTERRUPT_ALTIVEC: 1168 ext_msr = MSR_VEC; 1169 break; 1170 1171 case BOOK3S_INTERRUPT_VSX: 1172 ext_msr = MSR_VSX; 1173 break; 1174 } 1175 1176 r = kvmppc_handle_ext(vcpu, exit_nr, ext_msr); 1177 break; 1178 } 1179 case BOOK3S_INTERRUPT_ALIGNMENT: 1180 { 1181 u32 last_inst; 1182 int emul = kvmppc_get_last_inst(vcpu, INST_GENERIC, &last_inst); 1183 1184 if (emul == EMULATE_DONE) { 1185 u32 dsisr; 1186 u64 dar; 1187 1188 dsisr = kvmppc_alignment_dsisr(vcpu, last_inst); 1189 dar = kvmppc_alignment_dar(vcpu, last_inst); 1190 1191 kvmppc_set_dsisr(vcpu, dsisr); 1192 kvmppc_set_dar(vcpu, dar); 1193 1194 kvmppc_book3s_queue_irqprio(vcpu, exit_nr); 1195 } 1196 r = RESUME_GUEST; 1197 break; 1198 } 1199#ifdef CONFIG_PPC_BOOK3S_64 1200 case BOOK3S_INTERRUPT_FAC_UNAVAIL: 1201 kvmppc_handle_fac(vcpu, vcpu->arch.shadow_fscr >> 56); 1202 r = RESUME_GUEST; 1203 break; 1204#endif 1205 case BOOK3S_INTERRUPT_MACHINE_CHECK: 1206 case BOOK3S_INTERRUPT_TRACE: 1207 kvmppc_book3s_queue_irqprio(vcpu, exit_nr); 1208 r = RESUME_GUEST; 1209 break; 1210 default: 1211 { 1212 ulong shadow_srr1 = vcpu->arch.shadow_srr1; 1213 /* Ugh - bork here! What did we get? */ 1214 printk(KERN_EMERG "exit_nr=0x%x | pc=0x%lx | msr=0x%lx\n", 1215 exit_nr, kvmppc_get_pc(vcpu), shadow_srr1); 1216 r = RESUME_HOST; 1217 BUG(); 1218 break; 1219 } 1220 } 1221 1222 if (!(r & RESUME_HOST)) { 1223 /* To avoid clobbering exit_reason, only check for signals if 1224 * we aren't already exiting to userspace for some other 1225 * reason. */ 1226 1227 /* 1228 * Interrupts could be timers for the guest which we have to 1229 * inject again, so let's postpone them until we're in the guest 1230 * and if we really did time things so badly, then we just exit 1231 * again due to a host external interrupt. 1232 */ 1233 s = kvmppc_prepare_to_enter(vcpu); 1234 if (s <= 0) 1235 r = s; 1236 else { 1237 /* interrupts now hard-disabled */ 1238 kvmppc_fix_ee_before_entry(); 1239 } 1240 1241 kvmppc_handle_lost_ext(vcpu); 1242 } 1243 1244 trace_kvm_book3s_reenter(r, vcpu); 1245 1246 return r; 1247} 1248 1249static int kvm_arch_vcpu_ioctl_get_sregs_pr(struct kvm_vcpu *vcpu, 1250 struct kvm_sregs *sregs) 1251{ 1252 struct kvmppc_vcpu_book3s *vcpu3s = to_book3s(vcpu); 1253 int i; 1254 1255 sregs->pvr = vcpu->arch.pvr; 1256 1257 sregs->u.s.sdr1 = to_book3s(vcpu)->sdr1; 1258 if (vcpu->arch.hflags & BOOK3S_HFLAG_SLB) { 1259 for (i = 0; i < 64; i++) { 1260 sregs->u.s.ppc64.slb[i].slbe = vcpu->arch.slb[i].orige | i; 1261 sregs->u.s.ppc64.slb[i].slbv = vcpu->arch.slb[i].origv; 1262 } 1263 } else { 1264 for (i = 0; i < 16; i++) 1265 sregs->u.s.ppc32.sr[i] = kvmppc_get_sr(vcpu, i); 1266 1267 for (i = 0; i < 8; i++) { 1268 sregs->u.s.ppc32.ibat[i] = vcpu3s->ibat[i].raw; 1269 sregs->u.s.ppc32.dbat[i] = vcpu3s->dbat[i].raw; 1270 } 1271 } 1272 1273 return 0; 1274} 1275 1276static int kvm_arch_vcpu_ioctl_set_sregs_pr(struct kvm_vcpu *vcpu, 1277 struct kvm_sregs *sregs) 1278{ 1279 struct kvmppc_vcpu_book3s *vcpu3s = to_book3s(vcpu); 1280 int i; 1281 1282 kvmppc_set_pvr_pr(vcpu, sregs->pvr); 1283 1284 vcpu3s->sdr1 = sregs->u.s.sdr1; 1285 if (vcpu->arch.hflags & BOOK3S_HFLAG_SLB) { 1286 for (i = 0; i < 64; i++) { 1287 vcpu->arch.mmu.slbmte(vcpu, sregs->u.s.ppc64.slb[i].slbv, 1288 sregs->u.s.ppc64.slb[i].slbe); 1289 } 1290 } else { 1291 for (i = 0; i < 16; i++) { 1292 vcpu->arch.mmu.mtsrin(vcpu, i, sregs->u.s.ppc32.sr[i]); 1293 } 1294 for (i = 0; i < 8; i++) { 1295 kvmppc_set_bat(vcpu, &(vcpu3s->ibat[i]), false, 1296 (u32)sregs->u.s.ppc32.ibat[i]); 1297 kvmppc_set_bat(vcpu, &(vcpu3s->ibat[i]), true, 1298 (u32)(sregs->u.s.ppc32.ibat[i] >> 32)); 1299 kvmppc_set_bat(vcpu, &(vcpu3s->dbat[i]), false, 1300 (u32)sregs->u.s.ppc32.dbat[i]); 1301 kvmppc_set_bat(vcpu, &(vcpu3s->dbat[i]), true, 1302 (u32)(sregs->u.s.ppc32.dbat[i] >> 32)); 1303 } 1304 } 1305 1306 /* Flush the MMU after messing with the segments */ 1307 kvmppc_mmu_pte_flush(vcpu, 0, 0); 1308 1309 return 0; 1310} 1311 1312static int kvmppc_get_one_reg_pr(struct kvm_vcpu *vcpu, u64 id, 1313 union kvmppc_one_reg *val) 1314{ 1315 int r = 0; 1316 1317 switch (id) { 1318 case KVM_REG_PPC_DEBUG_INST: 1319 *val = get_reg_val(id, KVMPPC_INST_SW_BREAKPOINT); 1320 break; 1321 case KVM_REG_PPC_HIOR: 1322 *val = get_reg_val(id, to_book3s(vcpu)->hior); 1323 break; 1324 case KVM_REG_PPC_LPCR: 1325 case KVM_REG_PPC_LPCR_64: 1326 /* 1327 * We are only interested in the LPCR_ILE bit 1328 */ 1329 if (vcpu->arch.intr_msr & MSR_LE) 1330 *val = get_reg_val(id, LPCR_ILE); 1331 else 1332 *val = get_reg_val(id, 0); 1333 break; 1334 default: 1335 r = -EINVAL; 1336 break; 1337 } 1338 1339 return r; 1340} 1341 1342static void kvmppc_set_lpcr_pr(struct kvm_vcpu *vcpu, u64 new_lpcr) 1343{ 1344 if (new_lpcr & LPCR_ILE) 1345 vcpu->arch.intr_msr |= MSR_LE; 1346 else 1347 vcpu->arch.intr_msr &= ~MSR_LE; 1348} 1349 1350static int kvmppc_set_one_reg_pr(struct kvm_vcpu *vcpu, u64 id, 1351 union kvmppc_one_reg *val) 1352{ 1353 int r = 0; 1354 1355 switch (id) { 1356 case KVM_REG_PPC_HIOR: 1357 to_book3s(vcpu)->hior = set_reg_val(id, *val); 1358 to_book3s(vcpu)->hior_explicit = true; 1359 break; 1360 case KVM_REG_PPC_LPCR: 1361 case KVM_REG_PPC_LPCR_64: 1362 kvmppc_set_lpcr_pr(vcpu, set_reg_val(id, *val)); 1363 break; 1364 default: 1365 r = -EINVAL; 1366 break; 1367 } 1368 1369 return r; 1370} 1371 1372static struct kvm_vcpu *kvmppc_core_vcpu_create_pr(struct kvm *kvm, 1373 unsigned int id) 1374{ 1375 struct kvmppc_vcpu_book3s *vcpu_book3s; 1376 struct kvm_vcpu *vcpu; 1377 int err = -ENOMEM; 1378 unsigned long p; 1379 1380 vcpu = kmem_cache_zalloc(kvm_vcpu_cache, GFP_KERNEL); 1381 if (!vcpu) 1382 goto out; 1383 1384 vcpu_book3s = vzalloc(sizeof(struct kvmppc_vcpu_book3s)); 1385 if (!vcpu_book3s) 1386 goto free_vcpu; 1387 vcpu->arch.book3s = vcpu_book3s; 1388 1389#ifdef CONFIG_KVM_BOOK3S_32_HANDLER 1390 vcpu->arch.shadow_vcpu = 1391 kzalloc(sizeof(*vcpu->arch.shadow_vcpu), GFP_KERNEL); 1392 if (!vcpu->arch.shadow_vcpu) 1393 goto free_vcpu3s; 1394#endif 1395 1396 err = kvm_vcpu_init(vcpu, kvm, id); 1397 if (err) 1398 goto free_shadow_vcpu; 1399 1400 err = -ENOMEM; 1401 p = __get_free_page(GFP_KERNEL|__GFP_ZERO); 1402 if (!p) 1403 goto uninit_vcpu; 1404 vcpu->arch.shared = (void *)p; 1405#ifdef CONFIG_PPC_BOOK3S_64 1406 /* Always start the shared struct in native endian mode */ 1407#ifdef __BIG_ENDIAN__ 1408 vcpu->arch.shared_big_endian = true; 1409#else 1410 vcpu->arch.shared_big_endian = false; 1411#endif 1412 1413 /* 1414 * Default to the same as the host if we're on sufficiently 1415 * recent machine that we have 1TB segments; 1416 * otherwise default to PPC970FX. 1417 */ 1418 vcpu->arch.pvr = 0x3C0301; 1419 if (mmu_has_feature(MMU_FTR_1T_SEGMENT)) 1420 vcpu->arch.pvr = mfspr(SPRN_PVR); 1421 vcpu->arch.intr_msr = MSR_SF; 1422#else 1423 /* default to book3s_32 (750) */ 1424 vcpu->arch.pvr = 0x84202; 1425#endif 1426 kvmppc_set_pvr_pr(vcpu, vcpu->arch.pvr); 1427 vcpu->arch.slb_nr = 64; 1428 1429 vcpu->arch.shadow_msr = MSR_USER64 & ~MSR_LE; 1430 1431 err = kvmppc_mmu_init(vcpu); 1432 if (err < 0) 1433 goto uninit_vcpu; 1434 1435 return vcpu; 1436 1437uninit_vcpu: 1438 kvm_vcpu_uninit(vcpu); 1439free_shadow_vcpu: 1440#ifdef CONFIG_KVM_BOOK3S_32_HANDLER 1441 kfree(vcpu->arch.shadow_vcpu); 1442free_vcpu3s: 1443#endif 1444 vfree(vcpu_book3s); 1445free_vcpu: 1446 kmem_cache_free(kvm_vcpu_cache, vcpu); 1447out: 1448 return ERR_PTR(err); 1449} 1450 1451static void kvmppc_core_vcpu_free_pr(struct kvm_vcpu *vcpu) 1452{ 1453 struct kvmppc_vcpu_book3s *vcpu_book3s = to_book3s(vcpu); 1454 1455 free_page((unsigned long)vcpu->arch.shared & PAGE_MASK); 1456 kvm_vcpu_uninit(vcpu); 1457#ifdef CONFIG_KVM_BOOK3S_32_HANDLER 1458 kfree(vcpu->arch.shadow_vcpu); 1459#endif 1460 vfree(vcpu_book3s); 1461 kmem_cache_free(kvm_vcpu_cache, vcpu); 1462} 1463 1464static int kvmppc_vcpu_run_pr(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu) 1465{ 1466 int ret; 1467#ifdef CONFIG_ALTIVEC 1468 unsigned long uninitialized_var(vrsave); 1469#endif 1470 1471 /* Check if we can run the vcpu at all */ 1472 if (!vcpu->arch.sane) { 1473 kvm_run->exit_reason = KVM_EXIT_INTERNAL_ERROR; 1474 ret = -EINVAL; 1475 goto out; 1476 } 1477 1478 /* 1479 * Interrupts could be timers for the guest which we have to inject 1480 * again, so let's postpone them until we're in the guest and if we 1481 * really did time things so badly, then we just exit again due to 1482 * a host external interrupt. 1483 */ 1484 ret = kvmppc_prepare_to_enter(vcpu); 1485 if (ret <= 0) 1486 goto out; 1487 /* interrupts now hard-disabled */ 1488 1489 /* Save FPU state in thread_struct */ 1490 if (current->thread.regs->msr & MSR_FP) 1491 giveup_fpu(current); 1492 1493#ifdef CONFIG_ALTIVEC 1494 /* Save Altivec state in thread_struct */ 1495 if (current->thread.regs->msr & MSR_VEC) 1496 giveup_altivec(current); 1497#endif 1498 1499#ifdef CONFIG_VSX 1500 /* Save VSX state in thread_struct */ 1501 if (current->thread.regs->msr & MSR_VSX) 1502 __giveup_vsx(current); 1503#endif 1504 1505 /* Preload FPU if it's enabled */ 1506 if (kvmppc_get_msr(vcpu) & MSR_FP) 1507 kvmppc_handle_ext(vcpu, BOOK3S_INTERRUPT_FP_UNAVAIL, MSR_FP); 1508 1509 kvmppc_fix_ee_before_entry(); 1510 1511 ret = __kvmppc_vcpu_run(kvm_run, vcpu); 1512 1513 /* No need for kvm_guest_exit. It's done in handle_exit. 1514 We also get here with interrupts enabled. */ 1515 1516 /* Make sure we save the guest FPU/Altivec/VSX state */ 1517 kvmppc_giveup_ext(vcpu, MSR_FP | MSR_VEC | MSR_VSX); 1518 1519 /* Make sure we save the guest TAR/EBB/DSCR state */ 1520 kvmppc_giveup_fac(vcpu, FSCR_TAR_LG); 1521 1522out: 1523 vcpu->mode = OUTSIDE_GUEST_MODE; 1524 return ret; 1525} 1526 1527/* 1528 * Get (and clear) the dirty memory log for a memory slot. 1529 */ 1530static int kvm_vm_ioctl_get_dirty_log_pr(struct kvm *kvm, 1531 struct kvm_dirty_log *log) 1532{ 1533 struct kvm_memory_slot *memslot; 1534 struct kvm_vcpu *vcpu; 1535 ulong ga, ga_end; 1536 int is_dirty = 0; 1537 int r; 1538 unsigned long n; 1539 1540 mutex_lock(&kvm->slots_lock); 1541 1542 r = kvm_get_dirty_log(kvm, log, &is_dirty); 1543 if (r) 1544 goto out; 1545 1546 /* If nothing is dirty, don't bother messing with page tables. */ 1547 if (is_dirty) { 1548 memslot = id_to_memslot(kvm->memslots, log->slot); 1549 1550 ga = memslot->base_gfn << PAGE_SHIFT; 1551 ga_end = ga + (memslot->npages << PAGE_SHIFT); 1552 1553 kvm_for_each_vcpu(n, vcpu, kvm) 1554 kvmppc_mmu_pte_pflush(vcpu, ga, ga_end); 1555 1556 n = kvm_dirty_bitmap_bytes(memslot); 1557 memset(memslot->dirty_bitmap, 0, n); 1558 } 1559 1560 r = 0; 1561out: 1562 mutex_unlock(&kvm->slots_lock); 1563 return r; 1564} 1565 1566static void kvmppc_core_flush_memslot_pr(struct kvm *kvm, 1567 struct kvm_memory_slot *memslot) 1568{ 1569 return; 1570} 1571 1572static int kvmppc_core_prepare_memory_region_pr(struct kvm *kvm, 1573 struct kvm_memory_slot *memslot, 1574 struct kvm_userspace_memory_region *mem) 1575{ 1576 return 0; 1577} 1578 1579static void kvmppc_core_commit_memory_region_pr(struct kvm *kvm, 1580 struct kvm_userspace_memory_region *mem, 1581 const struct kvm_memory_slot *old) 1582{ 1583 return; 1584} 1585 1586static void kvmppc_core_free_memslot_pr(struct kvm_memory_slot *free, 1587 struct kvm_memory_slot *dont) 1588{ 1589 return; 1590} 1591 1592static int kvmppc_core_create_memslot_pr(struct kvm_memory_slot *slot, 1593 unsigned long npages) 1594{ 1595 return 0; 1596} 1597 1598 1599#ifdef CONFIG_PPC64 1600static int kvm_vm_ioctl_get_smmu_info_pr(struct kvm *kvm, 1601 struct kvm_ppc_smmu_info *info) 1602{ 1603 long int i; 1604 struct kvm_vcpu *vcpu; 1605 1606 info->flags = 0; 1607 1608 /* SLB is always 64 entries */ 1609 info->slb_size = 64; 1610 1611 /* Standard 4k base page size segment */ 1612 info->sps[0].page_shift = 12; 1613 info->sps[0].slb_enc = 0; 1614 info->sps[0].enc[0].page_shift = 12; 1615 info->sps[0].enc[0].pte_enc = 0; 1616 1617 /* 1618 * 64k large page size. 1619 * We only want to put this in if the CPUs we're emulating 1620 * support it, but unfortunately we don't have a vcpu easily 1621 * to hand here to test. Just pick the first vcpu, and if 1622 * that doesn't exist yet, report the minimum capability, 1623 * i.e., no 64k pages. 1624 * 1T segment support goes along with 64k pages. 1625 */ 1626 i = 1; 1627 vcpu = kvm_get_vcpu(kvm, 0); 1628 if (vcpu && (vcpu->arch.hflags & BOOK3S_HFLAG_MULTI_PGSIZE)) { 1629 info->flags = KVM_PPC_1T_SEGMENTS; 1630 info->sps[i].page_shift = 16; 1631 info->sps[i].slb_enc = SLB_VSID_L | SLB_VSID_LP_01; 1632 info->sps[i].enc[0].page_shift = 16; 1633 info->sps[i].enc[0].pte_enc = 1; 1634 ++i; 1635 } 1636 1637 /* Standard 16M large page size segment */ 1638 info->sps[i].page_shift = 24; 1639 info->sps[i].slb_enc = SLB_VSID_L; 1640 info->sps[i].enc[0].page_shift = 24; 1641 info->sps[i].enc[0].pte_enc = 0; 1642 1643 return 0; 1644} 1645#else 1646static int kvm_vm_ioctl_get_smmu_info_pr(struct kvm *kvm, 1647 struct kvm_ppc_smmu_info *info) 1648{ 1649 /* We should not get called */ 1650 BUG(); 1651} 1652#endif /* CONFIG_PPC64 */ 1653 1654static unsigned int kvm_global_user_count = 0; 1655static DEFINE_SPINLOCK(kvm_global_user_count_lock); 1656 1657static int kvmppc_core_init_vm_pr(struct kvm *kvm) 1658{ 1659 mutex_init(&kvm->arch.hpt_mutex); 1660 1661#ifdef CONFIG_PPC_BOOK3S_64 1662 /* Start out with the default set of hcalls enabled */ 1663 kvmppc_pr_init_default_hcalls(kvm); 1664#endif 1665 1666 if (firmware_has_feature(FW_FEATURE_SET_MODE)) { 1667 spin_lock(&kvm_global_user_count_lock); 1668 if (++kvm_global_user_count == 1) 1669 pSeries_disable_reloc_on_exc(); 1670 spin_unlock(&kvm_global_user_count_lock); 1671 } 1672 return 0; 1673} 1674 1675static void kvmppc_core_destroy_vm_pr(struct kvm *kvm) 1676{ 1677#ifdef CONFIG_PPC64 1678 WARN_ON(!list_empty(&kvm->arch.spapr_tce_tables)); 1679#endif 1680 1681 if (firmware_has_feature(FW_FEATURE_SET_MODE)) { 1682 spin_lock(&kvm_global_user_count_lock); 1683 BUG_ON(kvm_global_user_count == 0); 1684 if (--kvm_global_user_count == 0) 1685 pSeries_enable_reloc_on_exc(); 1686 spin_unlock(&kvm_global_user_count_lock); 1687 } 1688} 1689 1690static int kvmppc_core_check_processor_compat_pr(void) 1691{ 1692 /* we are always compatible */ 1693 return 0; 1694} 1695 1696static long kvm_arch_vm_ioctl_pr(struct file *filp, 1697 unsigned int ioctl, unsigned long arg) 1698{ 1699 return -ENOTTY; 1700} 1701 1702static struct kvmppc_ops kvm_ops_pr = { 1703 .get_sregs = kvm_arch_vcpu_ioctl_get_sregs_pr, 1704 .set_sregs = kvm_arch_vcpu_ioctl_set_sregs_pr, 1705 .get_one_reg = kvmppc_get_one_reg_pr, 1706 .set_one_reg = kvmppc_set_one_reg_pr, 1707 .vcpu_load = kvmppc_core_vcpu_load_pr, 1708 .vcpu_put = kvmppc_core_vcpu_put_pr, 1709 .set_msr = kvmppc_set_msr_pr, 1710 .vcpu_run = kvmppc_vcpu_run_pr, 1711 .vcpu_create = kvmppc_core_vcpu_create_pr, 1712 .vcpu_free = kvmppc_core_vcpu_free_pr, 1713 .check_requests = kvmppc_core_check_requests_pr, 1714 .get_dirty_log = kvm_vm_ioctl_get_dirty_log_pr, 1715 .flush_memslot = kvmppc_core_flush_memslot_pr, 1716 .prepare_memory_region = kvmppc_core_prepare_memory_region_pr, 1717 .commit_memory_region = kvmppc_core_commit_memory_region_pr, 1718 .unmap_hva = kvm_unmap_hva_pr, 1719 .unmap_hva_range = kvm_unmap_hva_range_pr, 1720 .age_hva = kvm_age_hva_pr, 1721 .test_age_hva = kvm_test_age_hva_pr, 1722 .set_spte_hva = kvm_set_spte_hva_pr, 1723 .mmu_destroy = kvmppc_mmu_destroy_pr, 1724 .free_memslot = kvmppc_core_free_memslot_pr, 1725 .create_memslot = kvmppc_core_create_memslot_pr, 1726 .init_vm = kvmppc_core_init_vm_pr, 1727 .destroy_vm = kvmppc_core_destroy_vm_pr, 1728 .get_smmu_info = kvm_vm_ioctl_get_smmu_info_pr, 1729 .emulate_op = kvmppc_core_emulate_op_pr, 1730 .emulate_mtspr = kvmppc_core_emulate_mtspr_pr, 1731 .emulate_mfspr = kvmppc_core_emulate_mfspr_pr, 1732 .fast_vcpu_kick = kvm_vcpu_kick, 1733 .arch_vm_ioctl = kvm_arch_vm_ioctl_pr, 1734#ifdef CONFIG_PPC_BOOK3S_64 1735 .hcall_implemented = kvmppc_hcall_impl_pr, 1736#endif 1737}; 1738 1739 1740int kvmppc_book3s_init_pr(void) 1741{ 1742 int r; 1743 1744 r = kvmppc_core_check_processor_compat_pr(); 1745 if (r < 0) 1746 return r; 1747 1748 kvm_ops_pr.owner = THIS_MODULE; 1749 kvmppc_pr_ops = &kvm_ops_pr; 1750 1751 r = kvmppc_mmu_hpte_sysinit(); 1752 return r; 1753} 1754 1755void kvmppc_book3s_exit_pr(void) 1756{ 1757 kvmppc_pr_ops = NULL; 1758 kvmppc_mmu_hpte_sysexit(); 1759} 1760 1761/* 1762 * We only support separate modules for book3s 64 1763 */ 1764#ifdef CONFIG_PPC_BOOK3S_64 1765 1766module_init(kvmppc_book3s_init_pr); 1767module_exit(kvmppc_book3s_exit_pr); 1768 1769MODULE_LICENSE("GPL"); 1770MODULE_ALIAS_MISCDEV(KVM_MINOR); 1771MODULE_ALIAS("devname:kvm"); 1772#endif 1773