arch/powerpc/kvm/booke.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  *
   4  * Copyright IBM Corp. 2007
   5  * Copyright 2010-2011 Freescale Semiconductor, Inc.
   6  *
   7  * Authors: Hollis Blanchard <hollisb@us.ibm.com>
   8  *          Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
   9  *          Scott Wood <scottwood@freescale.com>
  10  *          Varun Sethi <varun.sethi@freescale.com>
  11  */
  12
  13 #include <linux/errno.h>
  14 #include <linux/err.h>
  15 #include <linux/kvm_host.h>
  16 #include <linux/gfp.h>
  17 #include <linux/module.h>
  18 #include <linux/vmalloc.h>
  19 #include <linux/fs.h>
  20
  21 #include <asm/cputable.h>
  22 #include <linux/uaccess.h>
  23 #include <asm/kvm_ppc.h>
  24 #include <asm/cacheflush.h>
  25 #include <asm/dbell.h>
  26 #include <asm/hw_irq.h>
  27 #include <asm/irq.h>
  28 #include <asm/time.h>
  29
  30 #include "timing.h"
  31 #include "booke.h"
  32
  33 #define CREATE_TRACE_POINTS
  34 #include "trace_booke.h"
  35
  36 unsigned long kvmppc_booke_handlers;
  37
  38 #define VM_STAT(x) offsetof(struct kvm, stat.x), KVM_STAT_VM
  39 #define VCPU_STAT(x) offsetof(struct kvm_vcpu, stat.x), KVM_STAT_VCPU
  40
  41 struct kvm_stats_debugfs_item debugfs_entries[] = {
  42         { "mmio",       VCPU_STAT(mmio_exits) },
  43         { "sig",        VCPU_STAT(signal_exits) },
  44         { "itlb_r",     VCPU_STAT(itlb_real_miss_exits) },
  45         { "itlb_v",     VCPU_STAT(itlb_virt_miss_exits) },
  46         { "dtlb_r",     VCPU_STAT(dtlb_real_miss_exits) },
  47         { "dtlb_v",     VCPU_STAT(dtlb_virt_miss_exits) },
  48         { "sysc",       VCPU_STAT(syscall_exits) },
  49         { "isi",        VCPU_STAT(isi_exits) },
  50         { "dsi",        VCPU_STAT(dsi_exits) },
  51         { "inst_emu",   VCPU_STAT(emulated_inst_exits) },
  52         { "dec",        VCPU_STAT(dec_exits) },
  53         { "ext_intr",   VCPU_STAT(ext_intr_exits) },
  54         { "halt_successful_poll", VCPU_STAT(halt_successful_poll) },
  55         { "halt_attempted_poll", VCPU_STAT(halt_attempted_poll) },
  56         { "halt_poll_invalid", VCPU_STAT(halt_poll_invalid) },
  57         { "halt_wakeup", VCPU_STAT(halt_wakeup) },
  58         { "doorbell", VCPU_STAT(dbell_exits) },
  59         { "guest doorbell", VCPU_STAT(gdbell_exits) },
  60         { "remote_tlb_flush", VM_STAT(remote_tlb_flush) },
  61         { NULL }
  62 };
  63
  64 /* TODO: use vcpu_printf() */
  65 void kvmppc_dump_vcpu(struct kvm_vcpu *vcpu)
  66 {
  67         int i;
  68
  69         printk("pc:   %08lx msr:  %08llx\n", vcpu->arch.regs.nip,
  70                         vcpu->arch.shared->msr);
  71         printk("lr:   %08lx ctr:  %08lx\n", vcpu->arch.regs.link,
  72                         vcpu->arch.regs.ctr);
  73         printk("srr0: %08llx srr1: %08llx\n", vcpu->arch.shared->srr0,
  74                                             vcpu->arch.shared->srr1);
  75
  76         printk("exceptions: %08lx\n", vcpu->arch.pending_exceptions);
  77
  78         for (i = 0; i < 32; i += 4) {
  79                 printk("gpr%02d: %08lx %08lx %08lx %08lx\n", i,
  80                        kvmppc_get_gpr(vcpu, i),
  81                        kvmppc_get_gpr(vcpu, i+1),
  82                        kvmppc_get_gpr(vcpu, i+2),
  83                        kvmppc_get_gpr(vcpu, i+3));
  84         }
  85 }
  86
  87 #ifdef CONFIG_SPE
  88 void kvmppc_vcpu_disable_spe(struct kvm_vcpu *vcpu)
  89 {
  90         preempt_disable();
  91         enable_kernel_spe();
  92         kvmppc_save_guest_spe(vcpu);
  93         disable_kernel_spe();
  94         vcpu->arch.shadow_msr &= ~MSR_SPE;
  95         preempt_enable();
  96 }
  97
  98 static void kvmppc_vcpu_enable_spe(struct kvm_vcpu *vcpu)
  99 {
 100         preempt_disable();
 101         enable_kernel_spe();
 102         kvmppc_load_guest_spe(vcpu);
 103         disable_kernel_spe();
 104         vcpu->arch.shadow_msr |= MSR_SPE;
 105         preempt_enable();
 106 }
 107
 108 static void kvmppc_vcpu_sync_spe(struct kvm_vcpu *vcpu)
 109 {
 110         if (vcpu->arch.shared->msr & MSR_SPE) {
 111                 if (!(vcpu->arch.shadow_msr & MSR_SPE))
 112                         kvmppc_vcpu_enable_spe(vcpu);
 113         } else if (vcpu->arch.shadow_msr & MSR_SPE) {
 114                 kvmppc_vcpu_disable_spe(vcpu);
 115         }
 116 }
 117 #else
 118 static void kvmppc_vcpu_sync_spe(struct kvm_vcpu *vcpu)
 119 {
 120 }
 121 #endif
 122
 123 /*
 124  * Load up guest vcpu FP state if it's needed.
 125  * It also set the MSR_FP in thread so that host know
 126  * we're holding FPU, and then host can help to save
 127  * guest vcpu FP state if other threads require to use FPU.
 128  * This simulates an FP unavailable fault.
 129  *
 130  * It requires to be called with preemption disabled.
 131  */
 132 static inline void kvmppc_load_guest_fp(struct kvm_vcpu *vcpu)
 133 {
 134 #ifdef CONFIG_PPC_FPU
 135         if (!(current->thread.regs->msr & MSR_FP)) {
 136                 enable_kernel_fp();
 137                 load_fp_state(&vcpu->arch.fp);
 138                 disable_kernel_fp();
 139                 current->thread.fp_save_area = &vcpu->arch.fp;
 140                 current->thread.regs->msr |= MSR_FP;
 141         }
 142 #endif
 143 }
 144
 145 /*
 146  * Save guest vcpu FP state into thread.
 147  * It requires to be called with preemption disabled.
 148  */
 149 static inline void kvmppc_save_guest_fp(struct kvm_vcpu *vcpu)
 150 {
 151 #ifdef CONFIG_PPC_FPU
 152         if (current->thread.regs->msr & MSR_FP)
 153                 giveup_fpu(current);
 154         current->thread.fp_save_area = NULL;
 155 #endif
 156 }
 157
 158 static void kvmppc_vcpu_sync_fpu(struct kvm_vcpu *vcpu)
 159 {
 160 #if defined(CONFIG_PPC_FPU) && !defined(CONFIG_KVM_BOOKE_HV)
 161         /* We always treat the FP bit as enabled from the host
 162            perspective, so only need to adjust the shadow MSR */
 163         vcpu->arch.shadow_msr &= ~MSR_FP;
 164         vcpu->arch.shadow_msr |= vcpu->arch.shared->msr & MSR_FP;
 165 #endif
 166 }
 167
 168 /*
 169  * Simulate AltiVec unavailable fault to load guest state
 170  * from thread to AltiVec unit.
 171  * It requires to be called with preemption disabled.
 172  */
 173 static inline void kvmppc_load_guest_altivec(struct kvm_vcpu *vcpu)
 174 {
 175 #ifdef CONFIG_ALTIVEC
 176         if (cpu_has_feature(CPU_FTR_ALTIVEC)) {
 177                 if (!(current->thread.regs->msr & MSR_VEC)) {
 178                         enable_kernel_altivec();
 179                         load_vr_state(&vcpu->arch.vr);
 180                         disable_kernel_altivec();
 181                         current->thread.vr_save_area = &vcpu->arch.vr;
 182                         current->thread.regs->msr |= MSR_VEC;
 183                 }
 184         }
 185 #endif
 186 }
 187
 188 /*
 189  * Save guest vcpu AltiVec state into thread.
 190  * It requires to be called with preemption disabled.
 191  */
 192 static inline void kvmppc_save_guest_altivec(struct kvm_vcpu *vcpu)
 193 {
 194 #ifdef CONFIG_ALTIVEC
 195         if (cpu_has_feature(CPU_FTR_ALTIVEC)) {
 196                 if (current->thread.regs->msr & MSR_VEC)
 197                         giveup_altivec(current);
 198                 current->thread.vr_save_area = NULL;
 199         }
 200 #endif
 201 }
 202
 203 static void kvmppc_vcpu_sync_debug(struct kvm_vcpu *vcpu)
 204 {
 205         /* Synchronize guest's desire to get debug interrupts into shadow MSR */
 206 #ifndef CONFIG_KVM_BOOKE_HV
 207         vcpu->arch.shadow_msr &= ~MSR_DE;
 208         vcpu->arch.shadow_msr |= vcpu->arch.shared->msr & MSR_DE;
 209 #endif
 210
 211         /* Force enable debug interrupts when user space wants to debug */
 212         if (vcpu->guest_debug) {
 213 #ifdef CONFIG_KVM_BOOKE_HV
 214                 /*
 215                  * Since there is no shadow MSR, sync MSR_DE into the guest
 216                  * visible MSR.
 217                  */
 218                 vcpu->arch.shared->msr |= MSR_DE;
 219 #else
 220                 vcpu->arch.shadow_msr |= MSR_DE;
 221                 vcpu->arch.shared->msr &= ~MSR_DE;
 222 #endif
 223         }
 224 }
 225
 226 /*
 227  * Helper function for "full" MSR writes.  No need to call this if only
 228  * EE/CE/ME/DE/RI are changing.
 229  */
 230 void kvmppc_set_msr(struct kvm_vcpu *vcpu, u32 new_msr)
 231 {
 232         u32 old_msr = vcpu->arch.shared->msr;
 233
 234 #ifdef CONFIG_KVM_BOOKE_HV
 235         new_msr |= MSR_GS;
 236 #endif
 237
 238         vcpu->arch.shared->msr = new_msr;
 239
 240         kvmppc_mmu_msr_notify(vcpu, old_msr);
 241         kvmppc_vcpu_sync_spe(vcpu);
 242         kvmppc_vcpu_sync_fpu(vcpu);
 243         kvmppc_vcpu_sync_debug(vcpu);
 244 }
 245
 246 static void kvmppc_booke_queue_irqprio(struct kvm_vcpu *vcpu,
 247                                        unsigned int priority)
 248 {
 249         trace_kvm_booke_queue_irqprio(vcpu, priority);
 250         set_bit(priority, &vcpu->arch.pending_exceptions);
 251 }
 252
 253 void kvmppc_core_queue_dtlb_miss(struct kvm_vcpu *vcpu,
 254                                  ulong dear_flags, ulong esr_flags)
 255 {
 256         vcpu->arch.queued_dear = dear_flags;
 257         vcpu->arch.queued_esr = esr_flags;
 258         kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_DTLB_MISS);
 259 }
 260
 261 void kvmppc_core_queue_data_storage(struct kvm_vcpu *vcpu,
 262                                     ulong dear_flags, ulong esr_flags)
 263 {
 264         vcpu->arch.queued_dear = dear_flags;
 265         vcpu->arch.queued_esr = esr_flags;
 266         kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_DATA_STORAGE);
 267 }
 268
 269 void kvmppc_core_queue_itlb_miss(struct kvm_vcpu *vcpu)
 270 {
 271         kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_ITLB_MISS);
 272 }
 273
 274 void kvmppc_core_queue_inst_storage(struct kvm_vcpu *vcpu, ulong esr_flags)
 275 {
 276         vcpu->arch.queued_esr = esr_flags;
 277         kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_INST_STORAGE);
 278 }
 279
 280 static void kvmppc_core_queue_alignment(struct kvm_vcpu *vcpu, ulong dear_flags,
 281                                         ulong esr_flags)
 282 {
 283         vcpu->arch.queued_dear = dear_flags;
 284         vcpu->arch.queued_esr = esr_flags;
 285         kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_ALIGNMENT);
 286 }
 287
 288 void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong esr_flags)
 289 {
 290         vcpu->arch.queued_esr = esr_flags;
 291         kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_PROGRAM);
 292 }
 293
 294 void kvmppc_core_queue_fpunavail(struct kvm_vcpu *vcpu)
 295 {
 296         kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_FP_UNAVAIL);
 297 }
 298
 299 #ifdef CONFIG_ALTIVEC
 300 void kvmppc_core_queue_vec_unavail(struct kvm_vcpu *vcpu)
 301 {
 302         kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_ALTIVEC_UNAVAIL);
 303 }
 304 #endif
 305
 306 void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu)
 307 {
 308         kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_DECREMENTER);
 309 }
 310
 311 int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu)
 312 {
 313         return test_bit(BOOKE_IRQPRIO_DECREMENTER, &vcpu->arch.pending_exceptions);
 314 }
 315
 316 void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu)
 317 {
 318         clear_bit(BOOKE_IRQPRIO_DECREMENTER, &vcpu->arch.pending_exceptions);
 319 }
 320
 321 void kvmppc_core_queue_external(struct kvm_vcpu *vcpu,
 322                                 struct kvm_interrupt *irq)
 323 {
 324         unsigned int prio = BOOKE_IRQPRIO_EXTERNAL;
 325
 326         if (irq->irq == KVM_INTERRUPT_SET_LEVEL)
 327                 prio = BOOKE_IRQPRIO_EXTERNAL_LEVEL;
 328
 329         kvmppc_booke_queue_irqprio(vcpu, prio);
 330 }
 331
 332 void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu)
 333 {
 334         clear_bit(BOOKE_IRQPRIO_EXTERNAL, &vcpu->arch.pending_exceptions);
 335         clear_bit(BOOKE_IRQPRIO_EXTERNAL_LEVEL, &vcpu->arch.pending_exceptions);
 336 }
 337
 338 static void kvmppc_core_queue_watchdog(struct kvm_vcpu *vcpu)
 339 {
 340         kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_WATCHDOG);
 341 }
 342
 343 static void kvmppc_core_dequeue_watchdog(struct kvm_vcpu *vcpu)
 344 {
 345         clear_bit(BOOKE_IRQPRIO_WATCHDOG, &vcpu->arch.pending_exceptions);
 346 }
 347
 348 void kvmppc_core_queue_debug(struct kvm_vcpu *vcpu)
 349 {
 350         kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_DEBUG);
 351 }
 352
 353 void kvmppc_core_dequeue_debug(struct kvm_vcpu *vcpu)
 354 {
 355         clear_bit(BOOKE_IRQPRIO_DEBUG, &vcpu->arch.pending_exceptions);
 356 }
 357
 358 static void set_guest_srr(struct kvm_vcpu *vcpu, unsigned long srr0, u32 srr1)
 359 {
 360         kvmppc_set_srr0(vcpu, srr0);
 361         kvmppc_set_srr1(vcpu, srr1);
 362 }
 363
 364 static void set_guest_csrr(struct kvm_vcpu *vcpu, unsigned long srr0, u32 srr1)
 365 {
 366         vcpu->arch.csrr0 = srr0;
 367         vcpu->arch.csrr1 = srr1;
 368 }
 369
 370 static void set_guest_dsrr(struct kvm_vcpu *vcpu, unsigned long srr0, u32 srr1)
 371 {
 372         if (cpu_has_feature(CPU_FTR_DEBUG_LVL_EXC)) {
 373                 vcpu->arch.dsrr0 = srr0;
 374                 vcpu->arch.dsrr1 = srr1;
 375         } else {
 376                 set_guest_csrr(vcpu, srr0, srr1);
 377         }
 378 }
 379
 380 static void set_guest_mcsrr(struct kvm_vcpu *vcpu, unsigned long srr0, u32 srr1)
 381 {
 382         vcpu->arch.mcsrr0 = srr0;
 383         vcpu->arch.mcsrr1 = srr1;
 384 }
 385
 386 /* Deliver the interrupt of the corresponding priority, if possible. */
 387 static int kvmppc_booke_irqprio_deliver(struct kvm_vcpu *vcpu,
 388                                         unsigned int priority)
 389 {
 390         int allowed = 0;
 391         ulong msr_mask = 0;
 392         bool update_esr = false, update_dear = false, update_epr = false;
 393         ulong crit_raw = vcpu->arch.shared->critical;
 394         ulong crit_r1 = kvmppc_get_gpr(vcpu, 1);
 395         bool crit;
 396         bool keep_irq = false;
 397         enum int_class int_class;
 398         ulong new_msr = vcpu->arch.shared->msr;
 399
 400         /* Truncate crit indicators in 32 bit mode */
 401         if (!(vcpu->arch.shared->msr & MSR_SF)) {
 402                 crit_raw &= 0xffffffff;
 403                 crit_r1 &= 0xffffffff;
 404         }
 405
 406         /* Critical section when crit == r1 */
 407         crit = (crit_raw == crit_r1);
 408         /* ... and we're in supervisor mode */
 409         crit = crit && !(vcpu->arch.shared->msr & MSR_PR);
 410
 411         if (priority == BOOKE_IRQPRIO_EXTERNAL_LEVEL) {
 412                 priority = BOOKE_IRQPRIO_EXTERNAL;
 413                 keep_irq = true;
 414         }
 415
 416         if ((priority == BOOKE_IRQPRIO_EXTERNAL) && vcpu->arch.epr_flags)
 417                 update_epr = true;
 418
 419         switch (priority) {
 420         case BOOKE_IRQPRIO_DTLB_MISS:
 421         case BOOKE_IRQPRIO_DATA_STORAGE:
 422         case BOOKE_IRQPRIO_ALIGNMENT:
 423                 update_dear = true;
 424                 /* fall through */
 425         case BOOKE_IRQPRIO_INST_STORAGE:
 426         case BOOKE_IRQPRIO_PROGRAM:
 427                 update_esr = true;
 428                 /* fall through */
 429         case BOOKE_IRQPRIO_ITLB_MISS:
 430         case BOOKE_IRQPRIO_SYSCALL:
 431         case BOOKE_IRQPRIO_FP_UNAVAIL:
 432 #ifdef CONFIG_SPE_POSSIBLE
 433         case BOOKE_IRQPRIO_SPE_UNAVAIL:
 434         case BOOKE_IRQPRIO_SPE_FP_DATA:
 435         case BOOKE_IRQPRIO_SPE_FP_ROUND:
 436 #endif
 437 #ifdef CONFIG_ALTIVEC
 438         case BOOKE_IRQPRIO_ALTIVEC_UNAVAIL:
 439         case BOOKE_IRQPRIO_ALTIVEC_ASSIST:
 440 #endif
 441         case BOOKE_IRQPRIO_AP_UNAVAIL:
 442                 allowed = 1;
 443                 msr_mask = MSR_CE | MSR_ME | MSR_DE;
 444                 int_class = INT_CLASS_NONCRIT;
 445                 break;
 446         case BOOKE_IRQPRIO_WATCHDOG:
 447         case BOOKE_IRQPRIO_CRITICAL:
 448         case BOOKE_IRQPRIO_DBELL_CRIT:
 449                 allowed = vcpu->arch.shared->msr & MSR_CE;
 450                 allowed = allowed && !crit;
 451                 msr_mask = MSR_ME;
 452                 int_class = INT_CLASS_CRIT;
 453                 break;
 454         case BOOKE_IRQPRIO_MACHINE_CHECK:
 455                 allowed = vcpu->arch.shared->msr & MSR_ME;
 456                 allowed = allowed && !crit;
 457                 int_class = INT_CLASS_MC;
 458                 break;
 459         case BOOKE_IRQPRIO_DECREMENTER:
 460         case BOOKE_IRQPRIO_FIT:
 461                 keep_irq = true;
 462                 /* fall through */
 463         case BOOKE_IRQPRIO_EXTERNAL:
 464         case BOOKE_IRQPRIO_DBELL:
 465                 allowed = vcpu->arch.shared->msr & MSR_EE;
 466                 allowed = allowed && !crit;
 467                 msr_mask = MSR_CE | MSR_ME | MSR_DE;
 468                 int_class = INT_CLASS_NONCRIT;
 469                 break;
 470         case BOOKE_IRQPRIO_DEBUG:
 471                 allowed = vcpu->arch.shared->msr & MSR_DE;
 472                 allowed = allowed && !crit;
 473                 msr_mask = MSR_ME;
 474                 if (cpu_has_feature(CPU_FTR_DEBUG_LVL_EXC))
 475                         int_class = INT_CLASS_DBG;
 476                 else
 477                         int_class = INT_CLASS_CRIT;
 478
 479                 break;
 480         }
 481
 482         if (allowed) {
 483                 switch (int_class) {
 484                 case INT_CLASS_NONCRIT:
 485                         set_guest_srr(vcpu, vcpu->arch.regs.nip,
 486                                       vcpu->arch.shared->msr);
 487                         break;
 488                 case INT_CLASS_CRIT:
 489                         set_guest_csrr(vcpu, vcpu->arch.regs.nip,
 490                                        vcpu->arch.shared->msr);
 491                         break;
 492                 case INT_CLASS_DBG:
 493                         set_guest_dsrr(vcpu, vcpu->arch.regs.nip,
 494                                        vcpu->arch.shared->msr);
 495                         break;
 496                 case INT_CLASS_MC:
 497                         set_guest_mcsrr(vcpu, vcpu->arch.regs.nip,
 498                                         vcpu->arch.shared->msr);
 499                         break;
 500                 }
 501
 502                 vcpu->arch.regs.nip = vcpu->arch.ivpr |
 503                                         vcpu->arch.ivor[priority];
 504                 if (update_esr == true)
 505                         kvmppc_set_esr(vcpu, vcpu->arch.queued_esr);
 506                 if (update_dear == true)
 507                         kvmppc_set_dar(vcpu, vcpu->arch.queued_dear);
 508                 if (update_epr == true) {
 509                         if (vcpu->arch.epr_flags & KVMPPC_EPR_USER)
 510                                 kvm_make_request(KVM_REQ_EPR_EXIT, vcpu);
 511                         else if (vcpu->arch.epr_flags & KVMPPC_EPR_KERNEL) {
 512                                 BUG_ON(vcpu->arch.irq_type != KVMPPC_IRQ_MPIC);
 513                                 kvmppc_mpic_set_epr(vcpu);
 514                         }
 515                 }
 516
 517                 new_msr &= msr_mask;
 518 #if defined(CONFIG_64BIT)
 519                 if (vcpu->arch.epcr & SPRN_EPCR_ICM)
 520                         new_msr |= MSR_CM;
 521 #endif
 522                 kvmppc_set_msr(vcpu, new_msr);
 523
 524                 if (!keep_irq)
 525                         clear_bit(priority, &vcpu->arch.pending_exceptions);
 526         }
 527
 528 #ifdef CONFIG_KVM_BOOKE_HV
 529         /*
 530          * If an interrupt is pending but masked, raise a guest doorbell
 531          * so that we are notified when the guest enables the relevant
 532          * MSR bit.
 533          */
 534         if (vcpu->arch.pending_exceptions & BOOKE_IRQMASK_EE)
 535                 kvmppc_set_pending_interrupt(vcpu, INT_CLASS_NONCRIT);
 536         if (vcpu->arch.pending_exceptions & BOOKE_IRQMASK_CE)
 537                 kvmppc_set_pending_interrupt(vcpu, INT_CLASS_CRIT);
 538         if (vcpu->arch.pending_exceptions & BOOKE_IRQPRIO_MACHINE_CHECK)
 539                 kvmppc_set_pending_interrupt(vcpu, INT_CLASS_MC);
 540 #endif
 541
 542         return allowed;
 543 }
 544
 545 /*
 546  * Return the number of jiffies until the next timeout.  If the timeout is
 547  * longer than the NEXT_TIMER_MAX_DELTA, then return NEXT_TIMER_MAX_DELTA
 548  * because the larger value can break the timer APIs.
 549  */
 550 static unsigned long watchdog_next_timeout(struct kvm_vcpu *vcpu)
 551 {
 552         u64 tb, wdt_tb, wdt_ticks = 0;
 553         u64 nr_jiffies = 0;
 554         u32 period = TCR_GET_WP(vcpu->arch.tcr);
 555
 556         wdt_tb = 1ULL << (63 - period);
 557         tb = get_tb();
 558         /*
 559          * The watchdog timeout will hapeen when TB bit corresponding
 560          * to watchdog will toggle from 0 to 1.
 561          */
 562         if (tb & wdt_tb)
 563                 wdt_ticks = wdt_tb;
 564
 565         wdt_ticks += wdt_tb - (tb & (wdt_tb - 1));
 566
 567         /* Convert timebase ticks to jiffies */
 568         nr_jiffies = wdt_ticks;
 569
 570         if (do_div(nr_jiffies, tb_ticks_per_jiffy))
 571                 nr_jiffies++;
 572
 573         return min_t(unsigned long long, nr_jiffies, NEXT_TIMER_MAX_DELTA);
 574 }
 575
 576 static void arm_next_watchdog(struct kvm_vcpu *vcpu)
 577 {
 578         unsigned long nr_jiffies;
 579         unsigned long flags;
 580
 581         /*
 582          * If TSR_ENW and TSR_WIS are not set then no need to exit to
 583          * userspace, so clear the KVM_REQ_WATCHDOG request.
 584          */
 585         if ((vcpu->arch.tsr & (TSR_ENW | TSR_WIS)) != (TSR_ENW | TSR_WIS))
 586                 kvm_clear_request(KVM_REQ_WATCHDOG, vcpu);
 587
 588         spin_lock_irqsave(&vcpu->arch.wdt_lock, flags);
 589         nr_jiffies = watchdog_next_timeout(vcpu);
 590         /*
 591          * If the number of jiffies of watchdog timer >= NEXT_TIMER_MAX_DELTA
 592          * then do not run the watchdog timer as this can break timer APIs.
 593          */
 594         if (nr_jiffies < NEXT_TIMER_MAX_DELTA)
 595                 mod_timer(&vcpu->arch.wdt_timer, jiffies + nr_jiffies);
 596         else
 597                 del_timer(&vcpu->arch.wdt_timer);
 598         spin_unlock_irqrestore(&vcpu->arch.wdt_lock, flags);
 599 }
 600
 601 void kvmppc_watchdog_func(struct timer_list *t)
 602 {
 603         struct kvm_vcpu *vcpu = from_timer(vcpu, t, arch.wdt_timer);
 604         u32 tsr, new_tsr;
 605         int final;
 606
 607         do {
 608                 new_tsr = tsr = vcpu->arch.tsr;
 609                 final = 0;
 610
 611                 /* Time out event */
 612                 if (tsr & TSR_ENW) {
 613                         if (tsr & TSR_WIS)
 614                                 final = 1;
 615                         else
 616                                 new_tsr = tsr | TSR_WIS;
 617                 } else {
 618                         new_tsr = tsr | TSR_ENW;
 619                 }
 620         } while (cmpxchg(&vcpu->arch.tsr, tsr, new_tsr) != tsr);
 621
 622         if (new_tsr & TSR_WIS) {
 623                 smp_wmb();
 624                 kvm_make_request(KVM_REQ_PENDING_TIMER, vcpu);
 625                 kvm_vcpu_kick(vcpu);
 626         }
 627
 628         /*
 629          * If this is final watchdog expiry and some action is required
 630          * then exit to userspace.
 631          */
 632         if (final && (vcpu->arch.tcr & TCR_WRC_MASK) &&
 633             vcpu->arch.watchdog_enabled) {
 634                 smp_wmb();
 635                 kvm_make_request(KVM_REQ_WATCHDOG, vcpu);
 636                 kvm_vcpu_kick(vcpu);
 637         }
 638
 639         /*
 640          * Stop running the watchdog timer after final expiration to
 641          * prevent the host from being flooded with timers if the
 642          * guest sets a short period.
 643          * Timers will resume when TSR/TCR is updated next time.
 644          */
 645         if (!final)
 646                 arm_next_watchdog(vcpu);
 647 }
 648
 649 static void update_timer_ints(struct kvm_vcpu *vcpu)
 650 {
 651         if ((vcpu->arch.tcr & TCR_DIE) && (vcpu->arch.tsr & TSR_DIS))
 652                 kvmppc_core_queue_dec(vcpu);
 653         else
 654                 kvmppc_core_dequeue_dec(vcpu);
 655
 656         if ((vcpu->arch.tcr & TCR_WIE) && (vcpu->arch.tsr & TSR_WIS))
 657                 kvmppc_core_queue_watchdog(vcpu);
 658         else
 659                 kvmppc_core_dequeue_watchdog(vcpu);
 660 }
 661
 662 static void kvmppc_core_check_exceptions(struct kvm_vcpu *vcpu)
 663 {
 664         unsigned long *pending = &vcpu->arch.pending_exceptions;
 665         unsigned int priority;
 666
 667         priority = __ffs(*pending);
 668         while (priority < BOOKE_IRQPRIO_MAX) {
 669                 if (kvmppc_booke_irqprio_deliver(vcpu, priority))
 670                         break;
 671
 672                 priority = find_next_bit(pending,
 673                                          BITS_PER_BYTE * sizeof(*pending),
 674                                          priority + 1);
 675         }
 676
 677         /* Tell the guest about our interrupt status */
 678         vcpu->arch.shared->int_pending = !!*pending;
 679 }
 680
 681 /* Check pending exceptions and deliver one, if possible. */
 682 int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu)
 683 {
 684         int r = 0;
 685         WARN_ON_ONCE(!irqs_disabled());
 686
 687         kvmppc_core_check_exceptions(vcpu);
 688
 689         if (kvm_request_pending(vcpu)) {
 690                 /* Exception delivery raised request; start over */
 691                 return 1;
 692         }
 693
 694         if (vcpu->arch.shared->msr & MSR_WE) {
 695                 local_irq_enable();
 696                 kvm_vcpu_block(vcpu);
 697                 kvm_clear_request(KVM_REQ_UNHALT, vcpu);
 698                 hard_irq_disable();
 699
 700                 kvmppc_set_exit_type(vcpu, EMULATED_MTMSRWE_EXITS);
 701                 r = 1;
 702         };
 703
 704         return r;
 705 }
 706
 707 int kvmppc_core_check_requests(struct kvm_vcpu *vcpu)
 708 {
 709         int r = 1; /* Indicate we want to get back into the guest */
 710
 711         if (kvm_check_request(KVM_REQ_PENDING_TIMER, vcpu))
 712                 update_timer_ints(vcpu);
 713 #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC)
 714         if (kvm_check_request(KVM_REQ_TLB_FLUSH, vcpu))
 715                 kvmppc_core_flush_tlb(vcpu);
 716 #endif
 717
 718         if (kvm_check_request(KVM_REQ_WATCHDOG, vcpu)) {
 719                 vcpu->run->exit_reason = KVM_EXIT_WATCHDOG;
 720                 r = 0;
 721         }
 722
 723         if (kvm_check_request(KVM_REQ_EPR_EXIT, vcpu)) {
 724                 vcpu->run->epr.epr = 0;
 725                 vcpu->arch.epr_needed = true;
 726                 vcpu->run->exit_reason = KVM_EXIT_EPR;
 727                 r = 0;
 728         }
 729
 730         return r;
 731 }
 732
 733 int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
 734 {
 735         int ret, s;
 736         struct debug_reg debug;
 737
 738         if (!vcpu->arch.sane) {
 739                 kvm_run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
 740                 return -EINVAL;
 741         }
 742
 743         s = kvmppc_prepare_to_enter(vcpu);
 744         if (s <= 0) {
 745                 ret = s;
 746                 goto out;
 747         }
 748         /* interrupts now hard-disabled */
 749
 750 #ifdef CONFIG_PPC_FPU
 751         /* Save userspace FPU state in stack */
 752         enable_kernel_fp();
 753
 754         /*
 755          * Since we can't trap on MSR_FP in GS-mode, we consider the guest
 756          * as always using the FPU.
 757          */
 758         kvmppc_load_guest_fp(vcpu);
 759 #endif
 760
 761 #ifdef CONFIG_ALTIVEC
 762         /* Save userspace AltiVec state in stack */
 763         if (cpu_has_feature(CPU_FTR_ALTIVEC))
 764                 enable_kernel_altivec();
 765         /*
 766          * Since we can't trap on MSR_VEC in GS-mode, we consider the guest
 767          * as always using the AltiVec.
 768          */
 769         kvmppc_load_guest_altivec(vcpu);
 770 #endif
 771
 772         /* Switch to guest debug context */
 773         debug = vcpu->arch.dbg_reg;
 774         switch_booke_debug_regs(&debug);
 775         debug = current->thread.debug;
 776         current->thread.debug = vcpu->arch.dbg_reg;
 777
 778         vcpu->arch.pgdir = current->mm->pgd;
 779         kvmppc_fix_ee_before_entry();
 780
 781         ret = __kvmppc_vcpu_run(kvm_run, vcpu);
 782
 783         /* No need for guest_exit. It's done in handle_exit.
 784            We also get here with interrupts enabled. */
 785
 786         /* Switch back to user space debug context */
 787         switch_booke_debug_regs(&debug);
 788         current->thread.debug = debug;
 789
 790 #ifdef CONFIG_PPC_FPU
 791         kvmppc_save_guest_fp(vcpu);
 792 #endif
 793
 794 #ifdef CONFIG_ALTIVEC
 795         kvmppc_save_guest_altivec(vcpu);
 796 #endif
 797
 798 out:
 799         vcpu->mode = OUTSIDE_GUEST_MODE;
 800         return ret;
 801 }
 802
 803 static int emulation_exit(struct kvm_run *run, struct kvm_vcpu *vcpu)
 804 {
 805         enum emulation_result er;
 806
 807         er = kvmppc_emulate_instruction(run, vcpu);
 808         switch (er) {
 809         case EMULATE_DONE:
 810                 /* don't overwrite subtypes, just account kvm_stats */
 811                 kvmppc_account_exit_stat(vcpu, EMULATED_INST_EXITS);
 812                 /* Future optimization: only reload non-volatiles if
 813                  * they were actually modified by emulation. */
 814                 return RESUME_GUEST_NV;
 815
 816         case EMULATE_AGAIN:
 817                 return RESUME_GUEST;
 818
 819         case EMULATE_FAIL:
 820                 printk(KERN_CRIT "%s: emulation at %lx failed (%08x)\n",
 821                        __func__, vcpu->arch.regs.nip, vcpu->arch.last_inst);
 822                 /* For debugging, encode the failing instruction and
 823                  * report it to userspace. */
 824                 run->hw.hardware_exit_reason = ~0ULL << 32;
 825                 run->hw.hardware_exit_reason |= vcpu->arch.last_inst;
 826                 kvmppc_core_queue_program(vcpu, ESR_PIL);
 827                 return RESUME_HOST;
 828
 829         case EMULATE_EXIT_USER:
 830                 return RESUME_HOST;
 831
 832         default:
 833                 BUG();
 834         }
 835 }
 836
 837 static int kvmppc_handle_debug(struct kvm_run *run, struct kvm_vcpu *vcpu)
 838 {
 839         struct debug_reg *dbg_reg = &(vcpu->arch.dbg_reg);
 840         u32 dbsr = vcpu->arch.dbsr;
 841
 842         if (vcpu->guest_debug == 0) {
 843                 /*
 844                  * Debug resources belong to Guest.
 845                  * Imprecise debug event is not injected
 846                  */
 847                 if (dbsr & DBSR_IDE) {
 848                         dbsr &= ~DBSR_IDE;
 849                         if (!dbsr)
 850                                 return RESUME_GUEST;
 851                 }
 852
 853                 if (dbsr && (vcpu->arch.shared->msr & MSR_DE) &&
 854                             (vcpu->arch.dbg_reg.dbcr0 & DBCR0_IDM))
 855                         kvmppc_core_queue_debug(vcpu);
 856
 857                 /* Inject a program interrupt if trap debug is not allowed */
 858                 if ((dbsr & DBSR_TIE) && !(vcpu->arch.shared->msr & MSR_DE))
 859                         kvmppc_core_queue_program(vcpu, ESR_PTR);
 860
 861                 return RESUME_GUEST;
 862         }
 863
 864         /*
 865          * Debug resource owned by userspace.
 866          * Clear guest dbsr (vcpu->arch.dbsr)
 867          */
 868         vcpu->arch.dbsr = 0;
 869         run->debug.arch.status = 0;
 870         run->debug.arch.address = vcpu->arch.regs.nip;
 871
 872         if (dbsr & (DBSR_IAC1 | DBSR_IAC2 | DBSR_IAC3 | DBSR_IAC4)) {
 873                 run->debug.arch.status |= KVMPPC_DEBUG_BREAKPOINT;
 874         } else {
 875                 if (dbsr & (DBSR_DAC1W | DBSR_DAC2W))
 876                         run->debug.arch.status |= KVMPPC_DEBUG_WATCH_WRITE;
 877                 else if (dbsr & (DBSR_DAC1R | DBSR_DAC2R))
 878                         run->debug.arch.status |= KVMPPC_DEBUG_WATCH_READ;
 879                 if (dbsr & (DBSR_DAC1R | DBSR_DAC1W))
 880                         run->debug.arch.address = dbg_reg->dac1;
 881                 else if (dbsr & (DBSR_DAC2R | DBSR_DAC2W))
 882                         run->debug.arch.address = dbg_reg->dac2;
 883         }
 884
 885         return RESUME_HOST;
 886 }
 887
 888 static void kvmppc_fill_pt_regs(struct pt_regs *regs)
 889 {
 890         ulong r1, ip, msr, lr;
 891
 892         asm("mr %0, 1" : "=r"(r1));
 893         asm("mflr %0" : "=r"(lr));
 894         asm("mfmsr %0" : "=r"(msr));
 895         asm("bl 1f; 1: mflr %0" : "=r"(ip));
 896
 897         memset(regs, 0, sizeof(*regs));
 898         regs->gpr[1] = r1;
 899         regs->nip = ip;
 900         regs->msr = msr;
 901         regs->link = lr;
 902 }
 903
 904 /*
 905  * For interrupts needed to be handled by host interrupt handlers,
 906  * corresponding host handler are called from here in similar way
 907  * (but not exact) as they are called from low level handler
 908  * (such as from arch/powerpc/kernel/head_fsl_booke.S).
 909  */
 910 static void kvmppc_restart_interrupt(struct kvm_vcpu *vcpu,
 911                                      unsigned int exit_nr)
 912 {
 913         struct pt_regs regs;
 914
 915         switch (exit_nr) {
 916         case BOOKE_INTERRUPT_EXTERNAL:
 917                 kvmppc_fill_pt_regs(&regs);
 918                 do_IRQ(&regs);
 919                 break;
 920         case BOOKE_INTERRUPT_DECREMENTER:
 921                 kvmppc_fill_pt_regs(&regs);
 922                 timer_interrupt(&regs);
 923                 break;
 924 #if defined(CONFIG_PPC_DOORBELL)
 925         case BOOKE_INTERRUPT_DOORBELL:
 926                 kvmppc_fill_pt_regs(&regs);
 927                 doorbell_exception(&regs);
 928                 break;
 929 #endif
 930         case BOOKE_INTERRUPT_MACHINE_CHECK:
 931                 /* FIXME */
 932                 break;
 933         case BOOKE_INTERRUPT_PERFORMANCE_MONITOR:
 934                 kvmppc_fill_pt_regs(&regs);
 935                 performance_monitor_exception(&regs);
 936                 break;
 937         case BOOKE_INTERRUPT_WATCHDOG:
 938                 kvmppc_fill_pt_regs(&regs);
 939 #ifdef CONFIG_BOOKE_WDT
 940                 WatchdogException(&regs);
 941 #else
 942                 unknown_exception(&regs);
 943 #endif
 944                 break;
 945         case BOOKE_INTERRUPT_CRITICAL:
 946                 kvmppc_fill_pt_regs(&regs);
 947                 unknown_exception(&regs);
 948                 break;
 949         case BOOKE_INTERRUPT_DEBUG:
 950                 /* Save DBSR before preemption is enabled */
 951                 vcpu->arch.dbsr = mfspr(SPRN_DBSR);
 952                 kvmppc_clear_dbsr();
 953                 break;
 954         }
 955 }
 956
 957 static int kvmppc_resume_inst_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
 958                                   enum emulation_result emulated, u32 last_inst)
 959 {
 960         switch (emulated) {
 961         case EMULATE_AGAIN:
 962                 return RESUME_GUEST;
 963
 964         case EMULATE_FAIL:
 965                 pr_debug("%s: load instruction from guest address %lx failed\n",
 966                        __func__, vcpu->arch.regs.nip);
 967                 /* For debugging, encode the failing instruction and
 968                  * report it to userspace. */
 969                 run->hw.hardware_exit_reason = ~0ULL << 32;
 970                 run->hw.hardware_exit_reason |= last_inst;
 971                 kvmppc_core_queue_program(vcpu, ESR_PIL);
 972                 return RESUME_HOST;
 973
 974         default:
 975                 BUG();
 976         }
 977 }
 978
 979 /**
 980  * kvmppc_handle_exit
 981  *
 982  * Return value is in the form (errcode<<2 | RESUME_FLAG_HOST | RESUME_FLAG_NV)
 983  */
 984 int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu,
 985                        unsigned int exit_nr)
 986 {
 987         int r = RESUME_HOST;
 988         int s;
 989         int idx;
 990         u32 last_inst = KVM_INST_FETCH_FAILED;
 991         enum emulation_result emulated = EMULATE_DONE;
 992
 993         /* update before a new last_exit_type is rewritten */
 994         kvmppc_update_timing_stats(vcpu);
 995
 996         /* restart interrupts if they were meant for the host */
 997         kvmppc_restart_interrupt(vcpu, exit_nr);
 998
 999         /*
1000          * get last instruction before being preempted
1001          * TODO: for e6500 check also BOOKE_INTERRUPT_LRAT_ERROR & ESR_DATA
1002          */
1003         switch (exit_nr) {
1004         case BOOKE_INTERRUPT_DATA_STORAGE:
1005         case BOOKE_INTERRUPT_DTLB_MISS:
1006         case BOOKE_INTERRUPT_HV_PRIV:
1007                 emulated = kvmppc_get_last_inst(vcpu, INST_GENERIC, &last_inst);
1008                 break;
1009         case BOOKE_INTERRUPT_PROGRAM:
1010                 /* SW breakpoints arrive as illegal instructions on HV */
1011                 if (vcpu->guest_debug & KVM_GUESTDBG_USE_SW_BP)
1012                         emulated = kvmppc_get_last_inst(vcpu, INST_GENERIC, &last_inst);
1013                 break;
1014         default:
1015                 break;
1016         }
1017
1018         trace_kvm_exit(exit_nr, vcpu);
1019         guest_exit_irqoff();
1020
1021         local_irq_enable();
1022
1023         run->exit_reason = KVM_EXIT_UNKNOWN;
1024         run->ready_for_interrupt_injection = 1;
1025
1026         if (emulated != EMULATE_DONE) {
1027                 r = kvmppc_resume_inst_load(run, vcpu, emulated, last_inst);
1028                 goto out;
1029         }
1030
1031         switch (exit_nr) {
1032         case BOOKE_INTERRUPT_MACHINE_CHECK:
1033                 printk("MACHINE CHECK: %lx\n", mfspr(SPRN_MCSR));
1034                 kvmppc_dump_vcpu(vcpu);
1035                 /* For debugging, send invalid exit reason to user space */
1036                 run->hw.hardware_exit_reason = ~1ULL << 32;
1037                 run->hw.hardware_exit_reason |= mfspr(SPRN_MCSR);
1038                 r = RESUME_HOST;
1039                 break;
1040
1041         case BOOKE_INTERRUPT_EXTERNAL:
1042                 kvmppc_account_exit(vcpu, EXT_INTR_EXITS);
1043                 r = RESUME_GUEST;
1044                 break;
1045
1046         case BOOKE_INTERRUPT_DECREMENTER:
1047                 kvmppc_account_exit(vcpu, DEC_EXITS);
1048                 r = RESUME_GUEST;
1049                 break;
1050
1051         case BOOKE_INTERRUPT_WATCHDOG:
1052                 r = RESUME_GUEST;
1053                 break;
1054
1055         case BOOKE_INTERRUPT_DOORBELL:
1056                 kvmppc_account_exit(vcpu, DBELL_EXITS);
1057                 r = RESUME_GUEST;
1058                 break;
1059
1060         case BOOKE_INTERRUPT_GUEST_DBELL_CRIT:
1061                 kvmppc_account_exit(vcpu, GDBELL_EXITS);
1062
1063                 /*
1064                  * We are here because there is a pending guest interrupt
1065                  * which could not be delivered as MSR_CE or MSR_ME was not
1066                  * set.  Once we break from here we will retry delivery.
1067                  */
1068                 r = RESUME_GUEST;
1069                 break;
1070
1071         case BOOKE_INTERRUPT_GUEST_DBELL:
1072                 kvmppc_account_exit(vcpu, GDBELL_EXITS);
1073
1074                 /*
1075                  * We are here because there is a pending guest interrupt
1076                  * which could not be delivered as MSR_EE was not set.  Once
1077                  * we break from here we will retry delivery.
1078                  */
1079                 r = RESUME_GUEST;
1080                 break;
1081
1082         case BOOKE_INTERRUPT_PERFORMANCE_MONITOR:
1083                 r = RESUME_GUEST;
1084                 break;
1085
1086         case BOOKE_INTERRUPT_HV_PRIV:
1087                 r = emulation_exit(run, vcpu);
1088                 break;
1089
1090         case BOOKE_INTERRUPT_PROGRAM:
1091                 if ((vcpu->guest_debug & KVM_GUESTDBG_USE_SW_BP) &&
1092                         (last_inst == KVMPPC_INST_SW_BREAKPOINT)) {
1093                         /*
1094                          * We are here because of an SW breakpoint instr,
1095                          * so lets return to host to handle.
1096                          */
1097                         r = kvmppc_handle_debug(run, vcpu);
1098                         run->exit_reason = KVM_EXIT_DEBUG;
1099                         kvmppc_account_exit(vcpu, DEBUG_EXITS);
1100                         break;
1101                 }
1102
1103                 if (vcpu->arch.shared->msr & (MSR_PR | MSR_GS)) {
1104                         /*
1105                          * Program traps generated by user-level software must
1106                          * be handled by the guest kernel.
1107                          *
1108                          * In GS mode, hypervisor privileged instructions trap
1109                          * on BOOKE_INTERRUPT_HV_PRIV, not here, so these are
1110                          * actual program interrupts, handled by the guest.
1111                          */
1112                         kvmppc_core_queue_program(vcpu, vcpu->arch.fault_esr);
1113                         r = RESUME_GUEST;
1114                         kvmppc_account_exit(vcpu, USR_PR_INST);
1115                         break;
1116                 }
1117
1118                 r = emulation_exit(run, vcpu);
1119                 break;
1120
1121         case BOOKE_INTERRUPT_FP_UNAVAIL:
1122                 kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_FP_UNAVAIL);
1123                 kvmppc_account_exit(vcpu, FP_UNAVAIL);
1124                 r = RESUME_GUEST;
1125                 break;
1126
1127 #ifdef CONFIG_SPE
1128         case BOOKE_INTERRUPT_SPE_UNAVAIL: {
1129                 if (vcpu->arch.shared->msr & MSR_SPE)
1130                         kvmppc_vcpu_enable_spe(vcpu);
1131                 else
1132                         kvmppc_booke_queue_irqprio(vcpu,
1133                                                    BOOKE_IRQPRIO_SPE_UNAVAIL);
1134                 r = RESUME_GUEST;
1135                 break;
1136         }
1137
1138         case BOOKE_INTERRUPT_SPE_FP_DATA:
1139                 kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_SPE_FP_DATA);
1140                 r = RESUME_GUEST;
1141                 break;
1142
1143         case BOOKE_INTERRUPT_SPE_FP_ROUND:
1144                 kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_SPE_FP_ROUND);
1145                 r = RESUME_GUEST;
1146                 break;
1147 #elif defined(CONFIG_SPE_POSSIBLE)
1148         case BOOKE_INTERRUPT_SPE_UNAVAIL:
1149                 /*
1150                  * Guest wants SPE, but host kernel doesn't support it.  Send
1151                  * an "unimplemented operation" program check to the guest.
1152                  */
1153                 kvmppc_core_queue_program(vcpu, ESR_PUO | ESR_SPV);
1154                 r = RESUME_GUEST;
1155                 break;
1156
1157         /*
1158          * These really should never happen without CONFIG_SPE,
1159          * as we should never enable the real MSR[SPE] in the guest.
1160          */
1161         case BOOKE_INTERRUPT_SPE_FP_DATA:
1162         case BOOKE_INTERRUPT_SPE_FP_ROUND:
1163                 printk(KERN_CRIT "%s: unexpected SPE interrupt %u at %08lx\n",
1164                        __func__, exit_nr, vcpu->arch.regs.nip);
1165                 run->hw.hardware_exit_reason = exit_nr;
1166                 r = RESUME_HOST;
1167                 break;
1168 #endif /* CONFIG_SPE_POSSIBLE */
1169
1170 /*
1171  * On cores with Vector category, KVM is loaded only if CONFIG_ALTIVEC,
1172  * see kvmppc_core_check_processor_compat().
1173  */
1174 #ifdef CONFIG_ALTIVEC
1175         case BOOKE_INTERRUPT_ALTIVEC_UNAVAIL:
1176                 kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_ALTIVEC_UNAVAIL);
1177                 r = RESUME_GUEST;
1178                 break;
1179
1180         case BOOKE_INTERRUPT_ALTIVEC_ASSIST:
1181                 kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_ALTIVEC_ASSIST);
1182                 r = RESUME_GUEST;
1183                 break;
1184 #endif
1185
1186         case BOOKE_INTERRUPT_DATA_STORAGE:
1187                 kvmppc_core_queue_data_storage(vcpu, vcpu->arch.fault_dear,
1188                                                vcpu->arch.fault_esr);
1189                 kvmppc_account_exit(vcpu, DSI_EXITS);
1190                 r = RESUME_GUEST;
1191                 break;
1192
1193         case BOOKE_INTERRUPT_INST_STORAGE:
1194                 kvmppc_core_queue_inst_storage(vcpu, vcpu->arch.fault_esr);
1195                 kvmppc_account_exit(vcpu, ISI_EXITS);
1196                 r = RESUME_GUEST;
1197                 break;
1198
1199         case BOOKE_INTERRUPT_ALIGNMENT:
1200                 kvmppc_core_queue_alignment(vcpu, vcpu->arch.fault_dear,
1201                                             vcpu->arch.fault_esr);
1202                 r = RESUME_GUEST;
1203                 break;
1204
1205 #ifdef CONFIG_KVM_BOOKE_HV
1206         case BOOKE_INTERRUPT_HV_SYSCALL:
1207                 if (!(vcpu->arch.shared->msr & MSR_PR)) {
1208                         kvmppc_set_gpr(vcpu, 3, kvmppc_kvm_pv(vcpu));
1209                 } else {
1210                         /*
1211                          * hcall from guest userspace -- send privileged
1212                          * instruction program check.
1213                          */
1214                         kvmppc_core_queue_program(vcpu, ESR_PPR);
1215                 }
1216
1217                 r = RESUME_GUEST;
1218                 break;
1219 #else
1220         case BOOKE_INTERRUPT_SYSCALL:
1221                 if (!(vcpu->arch.shared->msr & MSR_PR) &&
1222                     (((u32)kvmppc_get_gpr(vcpu, 0)) == KVM_SC_MAGIC_R0)) {
1223                         /* KVM PV hypercalls */
1224                         kvmppc_set_gpr(vcpu, 3, kvmppc_kvm_pv(vcpu));
1225                         r = RESUME_GUEST;
1226                 } else {
1227                         /* Guest syscalls */
1228                         kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_SYSCALL);
1229                 }
1230                 kvmppc_account_exit(vcpu, SYSCALL_EXITS);
1231                 r = RESUME_GUEST;
1232                 break;
1233 #endif
1234
1235         case BOOKE_INTERRUPT_DTLB_MISS: {
1236                 unsigned long eaddr = vcpu->arch.fault_dear;
1237                 int gtlb_index;
1238                 gpa_t gpaddr;
1239                 gfn_t gfn;
1240
1241 #ifdef CONFIG_KVM_E500V2
1242                 if (!(vcpu->arch.shared->msr & MSR_PR) &&
1243                     (eaddr & PAGE_MASK) == vcpu->arch.magic_page_ea) {
1244                         kvmppc_map_magic(vcpu);
1245                         kvmppc_account_exit(vcpu, DTLB_VIRT_MISS_EXITS);
1246                         r = RESUME_GUEST;
1247
1248                         break;
1249                 }
1250 #endif
1251
1252                 /* Check the guest TLB. */
1253                 gtlb_index = kvmppc_mmu_dtlb_index(vcpu, eaddr);
1254                 if (gtlb_index < 0) {
1255                         /* The guest didn't have a mapping for it. */
1256                         kvmppc_core_queue_dtlb_miss(vcpu,
1257                                                     vcpu->arch.fault_dear,
1258                                                     vcpu->arch.fault_esr);
1259                         kvmppc_mmu_dtlb_miss(vcpu);
1260                         kvmppc_account_exit(vcpu, DTLB_REAL_MISS_EXITS);
1261                         r = RESUME_GUEST;
1262                         break;
1263                 }
1264
1265                 idx = srcu_read_lock(&vcpu->kvm->srcu);
1266
1267                 gpaddr = kvmppc_mmu_xlate(vcpu, gtlb_index, eaddr);
1268                 gfn = gpaddr >> PAGE_SHIFT;
1269
1270                 if (kvm_is_visible_gfn(vcpu->kvm, gfn)) {
1271                         /* The guest TLB had a mapping, but the shadow TLB
1272                          * didn't, and it is RAM. This could be because:
1273                          * a) the entry is mapping the host kernel, or
1274                          * b) the guest used a large mapping which we're faking
1275                          * Either way, we need to satisfy the fault without
1276                          * invoking the guest. */
1277                         kvmppc_mmu_map(vcpu, eaddr, gpaddr, gtlb_index);
1278                         kvmppc_account_exit(vcpu, DTLB_VIRT_MISS_EXITS);
1279                         r = RESUME_GUEST;
1280                 } else {
1281                         /* Guest has mapped and accessed a page which is not
1282                          * actually RAM. */
1283                         vcpu->arch.paddr_accessed = gpaddr;
1284                         vcpu->arch.vaddr_accessed = eaddr;
1285                         r = kvmppc_emulate_mmio(run, vcpu);
1286                         kvmppc_account_exit(vcpu, MMIO_EXITS);
1287                 }
1288
1289                 srcu_read_unlock(&vcpu->kvm->srcu, idx);
1290                 break;
1291         }
1292
1293         case BOOKE_INTERRUPT_ITLB_MISS: {
1294                 unsigned long eaddr = vcpu->arch.regs.nip;
1295                 gpa_t gpaddr;
1296                 gfn_t gfn;
1297                 int gtlb_index;
1298
1299                 r = RESUME_GUEST;
1300
1301                 /* Check the guest TLB. */
1302                 gtlb_index = kvmppc_mmu_itlb_index(vcpu, eaddr);
1303                 if (gtlb_index < 0) {
1304                         /* The guest didn't have a mapping for it. */
1305                         kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_ITLB_MISS);
1306                         kvmppc_mmu_itlb_miss(vcpu);
1307                         kvmppc_account_exit(vcpu, ITLB_REAL_MISS_EXITS);
1308                         break;
1309                 }
1310
1311                 kvmppc_account_exit(vcpu, ITLB_VIRT_MISS_EXITS);
1312
1313                 idx = srcu_read_lock(&vcpu->kvm->srcu);
1314
1315                 gpaddr = kvmppc_mmu_xlate(vcpu, gtlb_index, eaddr);
1316                 gfn = gpaddr >> PAGE_SHIFT;
1317
1318                 if (kvm_is_visible_gfn(vcpu->kvm, gfn)) {
1319                         /* The guest TLB had a mapping, but the shadow TLB
1320                          * didn't. This could be because:
1321                          * a) the entry is mapping the host kernel, or
1322                          * b) the guest used a large mapping which we're faking
1323                          * Either way, we need to satisfy the fault without
1324                          * invoking the guest. */
1325                         kvmppc_mmu_map(vcpu, eaddr, gpaddr, gtlb_index);
1326                 } else {
1327                         /* Guest mapped and leaped at non-RAM! */
1328                         kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_MACHINE_CHECK);
1329                 }
1330
1331                 srcu_read_unlock(&vcpu->kvm->srcu, idx);
1332                 break;
1333         }
1334
1335         case BOOKE_INTERRUPT_DEBUG: {
1336                 r = kvmppc_handle_debug(run, vcpu);
1337                 if (r == RESUME_HOST)
1338                         run->exit_reason = KVM_EXIT_DEBUG;
1339                 kvmppc_account_exit(vcpu, DEBUG_EXITS);
1340                 break;
1341         }
1342
1343         default:
1344                 printk(KERN_EMERG "exit_nr %d\n", exit_nr);
1345                 BUG();
1346         }
1347
1348 out:
1349         /*
1350          * To avoid clobbering exit_reason, only check for signals if we
1351          * aren't already exiting to userspace for some other reason.
1352          */
1353         if (!(r & RESUME_HOST)) {
1354                 s = kvmppc_prepare_to_enter(vcpu);
1355                 if (s <= 0)
1356                         r = (s << 2) | RESUME_HOST | (r & RESUME_FLAG_NV);
1357                 else {
1358                         /* interrupts now hard-disabled */
1359                         kvmppc_fix_ee_before_entry();
1360                         kvmppc_load_guest_fp(vcpu);
1361                         kvmppc_load_guest_altivec(vcpu);
1362                 }
1363         }
1364
1365         return r;
1366 }
1367
1368 static void kvmppc_set_tsr(struct kvm_vcpu *vcpu, u32 new_tsr)
1369 {
1370         u32 old_tsr = vcpu->arch.tsr;
1371
1372         vcpu->arch.tsr = new_tsr;
1373
1374         if ((old_tsr ^ vcpu->arch.tsr) & (TSR_ENW | TSR_WIS))
1375                 arm_next_watchdog(vcpu);
1376
1377         update_timer_ints(vcpu);
1378 }
1379
1380 int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu)
1381 {
1382         return 0;
1383 }
1384
1385 int kvmppc_subarch_vcpu_init(struct kvm_vcpu *vcpu)
1386 {
1387         /* setup watchdog timer once */
1388         spin_lock_init(&vcpu->arch.wdt_lock);
1389         timer_setup(&vcpu->arch.wdt_timer, kvmppc_watchdog_func, 0);
1390
1391         /*
1392          * Clear DBSR.MRR to avoid guest debug interrupt as
1393          * this is of host interest
1394          */
1395         mtspr(SPRN_DBSR, DBSR_MRR);
1396         return 0;
1397 }
1398
1399 void kvmppc_subarch_vcpu_uninit(struct kvm_vcpu *vcpu)
1400 {
1401         del_timer_sync(&vcpu->arch.wdt_timer);
1402 }
1403
1404 int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
1405 {
1406         int i;
1407
1408         vcpu_load(vcpu);
1409
1410         regs->pc = vcpu->arch.regs.nip;
1411         regs->cr = kvmppc_get_cr(vcpu);
1412         regs->ctr = vcpu->arch.regs.ctr;
1413         regs->lr = vcpu->arch.regs.link;
1414         regs->xer = kvmppc_get_xer(vcpu);
1415         regs->msr = vcpu->arch.shared->msr;
1416         regs->srr0 = kvmppc_get_srr0(vcpu);
1417         regs->srr1 = kvmppc_get_srr1(vcpu);
1418         regs->pid = vcpu->arch.pid;
1419         regs->sprg0 = kvmppc_get_sprg0(vcpu);
1420         regs->sprg1 = kvmppc_get_sprg1(vcpu);
1421         regs->sprg2 = kvmppc_get_sprg2(vcpu);
1422         regs->sprg3 = kvmppc_get_sprg3(vcpu);
1423         regs->sprg4 = kvmppc_get_sprg4(vcpu);
1424         regs->sprg5 = kvmppc_get_sprg5(vcpu);
1425         regs->sprg6 = kvmppc_get_sprg6(vcpu);
1426         regs->sprg7 = kvmppc_get_sprg7(vcpu);
1427
1428         for (i = 0; i < ARRAY_SIZE(regs->gpr); i++)
1429                 regs->gpr[i] = kvmppc_get_gpr(vcpu, i);
1430
1431         vcpu_put(vcpu);
1432         return 0;
1433 }
1434
1435 int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
1436 {
1437         int i;
1438
1439         vcpu_load(vcpu);
1440
1441         vcpu->arch.regs.nip = regs->pc;
1442         kvmppc_set_cr(vcpu, regs->cr);
1443         vcpu->arch.regs.ctr = regs->ctr;
1444         vcpu->arch.regs.link = regs->lr;
1445         kvmppc_set_xer(vcpu, regs->xer);
1446         kvmppc_set_msr(vcpu, regs->msr);
1447         kvmppc_set_srr0(vcpu, regs->srr0);
1448         kvmppc_set_srr1(vcpu, regs->srr1);
1449         kvmppc_set_pid(vcpu, regs->pid);
1450         kvmppc_set_sprg0(vcpu, regs->sprg0);
1451         kvmppc_set_sprg1(vcpu, regs->sprg1);
1452         kvmppc_set_sprg2(vcpu, regs->sprg2);
1453         kvmppc_set_sprg3(vcpu, regs->sprg3);
1454         kvmppc_set_sprg4(vcpu, regs->sprg4);
1455         kvmppc_set_sprg5(vcpu, regs->sprg5);
1456         kvmppc_set_sprg6(vcpu, regs->sprg6);
1457         kvmppc_set_sprg7(vcpu, regs->sprg7);
1458
1459         for (i = 0; i < ARRAY_SIZE(regs->gpr); i++)
1460                 kvmppc_set_gpr(vcpu, i, regs->gpr[i]);
1461
1462         vcpu_put(vcpu);
1463         return 0;
1464 }
1465
1466 static void get_sregs_base(struct kvm_vcpu *vcpu,
1467                            struct kvm_sregs *sregs)
1468 {
1469         u64 tb = get_tb();
1470
1471         sregs->u.e.features |= KVM_SREGS_E_BASE;
1472
1473         sregs->u.e.csrr0 = vcpu->arch.csrr0;
1474         sregs->u.e.csrr1 = vcpu->arch.csrr1;
1475         sregs->u.e.mcsr = vcpu->arch.mcsr;
1476         sregs->u.e.esr = kvmppc_get_esr(vcpu);
1477         sregs->u.e.dear = kvmppc_get_dar(vcpu);
1478         sregs->u.e.tsr = vcpu->arch.tsr;
1479         sregs->u.e.tcr = vcpu->arch.tcr;
1480         sregs->u.e.dec = kvmppc_get_dec(vcpu, tb);
1481         sregs->u.e.tb = tb;
1482         sregs->u.e.vrsave = vcpu->arch.vrsave;
1483 }
1484
1485 static int set_sregs_base(struct kvm_vcpu *vcpu,
1486                           struct kvm_sregs *sregs)
1487 {
1488         if (!(sregs->u.e.features & KVM_SREGS_E_BASE))
1489                 return 0;
1490
1491         vcpu->arch.csrr0 = sregs->u.e.csrr0;
1492         vcpu->arch.csrr1 = sregs->u.e.csrr1;
1493         vcpu->arch.mcsr = sregs->u.e.mcsr;
1494         kvmppc_set_esr(vcpu, sregs->u.e.esr);
1495         kvmppc_set_dar(vcpu, sregs->u.e.dear);
1496         vcpu->arch.vrsave = sregs->u.e.vrsave;
1497         kvmppc_set_tcr(vcpu, sregs->u.e.tcr);
1498
1499         if (sregs->u.e.update_special & KVM_SREGS_E_UPDATE_DEC) {
1500                 vcpu->arch.dec = sregs->u.e.dec;
1501                 kvmppc_emulate_dec(vcpu);
1502         }
1503
1504         if (sregs->u.e.update_special & KVM_SREGS_E_UPDATE_TSR)
1505                 kvmppc_set_tsr(vcpu, sregs->u.e.tsr);
1506
1507         return 0;
1508 }
1509
1510 static void get_sregs_arch206(struct kvm_vcpu *vcpu,
1511                               struct kvm_sregs *sregs)
1512 {
1513         sregs->u.e.features |= KVM_SREGS_E_ARCH206;
1514
1515         sregs->u.e.pir = vcpu->vcpu_id;
1516         sregs->u.e.mcsrr0 = vcpu->arch.mcsrr0;
1517         sregs->u.e.mcsrr1 = vcpu->arch.mcsrr1;
1518         sregs->u.e.decar = vcpu->arch.decar;
1519         sregs->u.e.ivpr = vcpu->arch.ivpr;
1520 }
1521
1522 static int set_sregs_arch206(struct kvm_vcpu *vcpu,
1523                              struct kvm_sregs *sregs)
1524 {
1525         if (!(sregs->u.e.features & KVM_SREGS_E_ARCH206))
1526                 return 0;
1527
1528         if (sregs->u.e.pir != vcpu->vcpu_id)
1529                 return -EINVAL;
1530
1531         vcpu->arch.mcsrr0 = sregs->u.e.mcsrr0;
1532         vcpu->arch.mcsrr1 = sregs->u.e.mcsrr1;
1533         vcpu->arch.decar = sregs->u.e.decar;
1534         vcpu->arch.ivpr = sregs->u.e.ivpr;
1535
1536         return 0;
1537 }
1538
1539 int kvmppc_get_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs)
1540 {
1541         sregs->u.e.features |= KVM_SREGS_E_IVOR;
1542
1543         sregs->u.e.ivor_low[0] = vcpu->arch.ivor[BOOKE_IRQPRIO_CRITICAL];
1544         sregs->u.e.ivor_low[1] = vcpu->arch.ivor[BOOKE_IRQPRIO_MACHINE_CHECK];
1545         sregs->u.e.ivor_low[2] = vcpu->arch.ivor[BOOKE_IRQPRIO_DATA_STORAGE];
1546         sregs->u.e.ivor_low[3] = vcpu->arch.ivor[BOOKE_IRQPRIO_INST_STORAGE];
1547         sregs->u.e.ivor_low[4] = vcpu->arch.ivor[BOOKE_IRQPRIO_EXTERNAL];
1548         sregs->u.e.ivor_low[5] = vcpu->arch.ivor[BOOKE_IRQPRIO_ALIGNMENT];
1549         sregs->u.e.ivor_low[6] = vcpu->arch.ivor[BOOKE_IRQPRIO_PROGRAM];
1550         sregs->u.e.ivor_low[7] = vcpu->arch.ivor[BOOKE_IRQPRIO_FP_UNAVAIL];
1551         sregs->u.e.ivor_low[8] = vcpu->arch.ivor[BOOKE_IRQPRIO_SYSCALL];
1552         sregs->u.e.ivor_low[9] = vcpu->arch.ivor[BOOKE_IRQPRIO_AP_UNAVAIL];
1553         sregs->u.e.ivor_low[10] = vcpu->arch.ivor[BOOKE_IRQPRIO_DECREMENTER];
1554         sregs->u.e.ivor_low[11] = vcpu->arch.ivor[BOOKE_IRQPRIO_FIT];
1555         sregs->u.e.ivor_low[12] = vcpu->arch.ivor[BOOKE_IRQPRIO_WATCHDOG];
1556         sregs->u.e.ivor_low[13] = vcpu->arch.ivor[BOOKE_IRQPRIO_DTLB_MISS];
1557         sregs->u.e.ivor_low[14] = vcpu->arch.ivor[BOOKE_IRQPRIO_ITLB_MISS];
1558         sregs->u.e.ivor_low[15] = vcpu->arch.ivor[BOOKE_IRQPRIO_DEBUG];
1559         return 0;
1560 }
1561
1562 int kvmppc_set_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs)
1563 {
1564         if (!(sregs->u.e.features & KVM_SREGS_E_IVOR))
1565                 return 0;
1566
1567         vcpu->arch.ivor[BOOKE_IRQPRIO_CRITICAL] = sregs->u.e.ivor_low[0];
1568         vcpu->arch.ivor[BOOKE_IRQPRIO_MACHINE_CHECK] = sregs->u.e.ivor_low[1];
1569         vcpu->arch.ivor[BOOKE_IRQPRIO_DATA_STORAGE] = sregs->u.e.ivor_low[2];
1570         vcpu->arch.ivor[BOOKE_IRQPRIO_INST_STORAGE] = sregs->u.e.ivor_low[3];
1571         vcpu->arch.ivor[BOOKE_IRQPRIO_EXTERNAL] = sregs->u.e.ivor_low[4];
1572         vcpu->arch.ivor[BOOKE_IRQPRIO_ALIGNMENT] = sregs->u.e.ivor_low[5];
1573         vcpu->arch.ivor[BOOKE_IRQPRIO_PROGRAM] = sregs->u.e.ivor_low[6];
1574         vcpu->arch.ivor[BOOKE_IRQPRIO_FP_UNAVAIL] = sregs->u.e.ivor_low[7];
1575         vcpu->arch.ivor[BOOKE_IRQPRIO_SYSCALL] = sregs->u.e.ivor_low[8];
1576         vcpu->arch.ivor[BOOKE_IRQPRIO_AP_UNAVAIL] = sregs->u.e.ivor_low[9];
1577         vcpu->arch.ivor[BOOKE_IRQPRIO_DECREMENTER] = sregs->u.e.ivor_low[10];
1578         vcpu->arch.ivor[BOOKE_IRQPRIO_FIT] = sregs->u.e.ivor_low[11];
1579         vcpu->arch.ivor[BOOKE_IRQPRIO_WATCHDOG] = sregs->u.e.ivor_low[12];
1580         vcpu->arch.ivor[BOOKE_IRQPRIO_DTLB_MISS] = sregs->u.e.ivor_low[13];
1581         vcpu->arch.ivor[BOOKE_IRQPRIO_ITLB_MISS] = sregs->u.e.ivor_low[14];
1582         vcpu->arch.ivor[BOOKE_IRQPRIO_DEBUG] = sregs->u.e.ivor_low[15];
1583
1584         return 0;
1585 }
1586
1587 int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
1588                                   struct kvm_sregs *sregs)
1589 {
1590         int ret;
1591
1592         vcpu_load(vcpu);
1593
1594         sregs->pvr = vcpu->arch.pvr;
1595
1596         get_sregs_base(vcpu, sregs);
1597         get_sregs_arch206(vcpu, sregs);
1598         ret = vcpu->kvm->arch.kvm_ops->get_sregs(vcpu, sregs);
1599
1600         vcpu_put(vcpu);
1601         return ret;
1602 }
1603
1604 int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
1605                                   struct kvm_sregs *sregs)
1606 {
1607         int ret = -EINVAL;
1608
1609         vcpu_load(vcpu);
1610         if (vcpu->arch.pvr != sregs->pvr)
1611                 goto out;
1612
1613         ret = set_sregs_base(vcpu, sregs);
1614         if (ret < 0)
1615                 goto out;
1616
1617         ret = set_sregs_arch206(vcpu, sregs);
1618         if (ret < 0)
1619                 goto out;
1620
1621         ret = vcpu->kvm->arch.kvm_ops->set_sregs(vcpu, sregs);
1622
1623 out:
1624         vcpu_put(vcpu);
1625         return ret;
1626 }
1627
1628 int kvmppc_get_one_reg(struct kvm_vcpu *vcpu, u64 id,
1629                         union kvmppc_one_reg *val)
1630 {
1631         int r = 0;
1632
1633         switch (id) {
1634         case KVM_REG_PPC_IAC1:
1635                 *val = get_reg_val(id, vcpu->arch.dbg_reg.iac1);
1636                 break;
1637         case KVM_REG_PPC_IAC2:
1638                 *val = get_reg_val(id, vcpu->arch.dbg_reg.iac2);
1639                 break;
1640 #if CONFIG_PPC_ADV_DEBUG_IACS > 2
1641         case KVM_REG_PPC_IAC3:
1642                 *val = get_reg_val(id, vcpu->arch.dbg_reg.iac3);
1643                 break;
1644         case KVM_REG_PPC_IAC4:
1645                 *val = get_reg_val(id, vcpu->arch.dbg_reg.iac4);
1646                 break;
1647 #endif
1648         case KVM_REG_PPC_DAC1:
1649                 *val = get_reg_val(id, vcpu->arch.dbg_reg.dac1);
1650                 break;
1651         case KVM_REG_PPC_DAC2:
1652                 *val = get_reg_val(id, vcpu->arch.dbg_reg.dac2);
1653                 break;
1654         case KVM_REG_PPC_EPR: {
1655                 u32 epr = kvmppc_get_epr(vcpu);
1656                 *val = get_reg_val(id, epr);
1657                 break;
1658         }
1659 #if defined(CONFIG_64BIT)
1660         case KVM_REG_PPC_EPCR:
1661                 *val = get_reg_val(id, vcpu->arch.epcr);
1662                 break;
1663 #endif
1664         case KVM_REG_PPC_TCR:
1665                 *val = get_reg_val(id, vcpu->arch.tcr);
1666                 break;
1667         case KVM_REG_PPC_TSR:
1668                 *val = get_reg_val(id, vcpu->arch.tsr);
1669                 break;
1670         case KVM_REG_PPC_DEBUG_INST:
1671                 *val = get_reg_val(id, KVMPPC_INST_SW_BREAKPOINT);
1672                 break;
1673         case KVM_REG_PPC_VRSAVE:
1674                 *val = get_reg_val(id, vcpu->arch.vrsave);
1675                 break;
1676         default:
1677                 r = vcpu->kvm->arch.kvm_ops->get_one_reg(vcpu, id, val);
1678                 break;
1679         }
1680
1681         return r;
1682 }
1683
1684 int kvmppc_set_one_reg(struct kvm_vcpu *vcpu, u64 id,
1685                         union kvmppc_one_reg *val)
1686 {
1687         int r = 0;
1688
1689         switch (id) {
1690         case KVM_REG_PPC_IAC1:
1691                 vcpu->arch.dbg_reg.iac1 = set_reg_val(id, *val);
1692                 break;
1693         case KVM_REG_PPC_IAC2:
1694                 vcpu->arch.dbg_reg.iac2 = set_reg_val(id, *val);
1695                 break;
1696 #if CONFIG_PPC_ADV_DEBUG_IACS > 2
1697         case KVM_REG_PPC_IAC3:
1698                 vcpu->arch.dbg_reg.iac3 = set_reg_val(id, *val);
1699                 break;
1700         case KVM_REG_PPC_IAC4:
1701                 vcpu->arch.dbg_reg.iac4 = set_reg_val(id, *val);
1702                 break;
1703 #endif
1704         case KVM_REG_PPC_DAC1:
1705                 vcpu->arch.dbg_reg.dac1 = set_reg_val(id, *val);
1706                 break;
1707         case KVM_REG_PPC_DAC2:
1708                 vcpu->arch.dbg_reg.dac2 = set_reg_val(id, *val);
1709                 break;
1710         case KVM_REG_PPC_EPR: {
1711                 u32 new_epr = set_reg_val(id, *val);
1712                 kvmppc_set_epr(vcpu, new_epr);
1713                 break;
1714         }
1715 #if defined(CONFIG_64BIT)
1716         case KVM_REG_PPC_EPCR: {
1717                 u32 new_epcr = set_reg_val(id, *val);
1718                 kvmppc_set_epcr(vcpu, new_epcr);
1719                 break;
1720         }
1721 #endif
1722         case KVM_REG_PPC_OR_TSR: {
1723                 u32 tsr_bits = set_reg_val(id, *val);
1724                 kvmppc_set_tsr_bits(vcpu, tsr_bits);
1725                 break;
1726         }
1727         case KVM_REG_PPC_CLEAR_TSR: {
1728                 u32 tsr_bits = set_reg_val(id, *val);
1729                 kvmppc_clr_tsr_bits(vcpu, tsr_bits);
1730                 break;
1731         }
1732         case KVM_REG_PPC_TSR: {
1733                 u32 tsr = set_reg_val(id, *val);
1734                 kvmppc_set_tsr(vcpu, tsr);
1735                 break;
1736         }
1737         case KVM_REG_PPC_TCR: {
1738                 u32 tcr = set_reg_val(id, *val);
1739                 kvmppc_set_tcr(vcpu, tcr);
1740                 break;
1741         }
1742         case KVM_REG_PPC_VRSAVE:
1743                 vcpu->arch.vrsave = set_reg_val(id, *val);
1744                 break;
1745         default:
1746                 r = vcpu->kvm->arch.kvm_ops->set_one_reg(vcpu, id, val);
1747                 break;
1748         }
1749
1750         return r;
1751 }
1752
1753 int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
1754 {
1755         return -ENOTSUPP;
1756 }
1757
1758 int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
1759 {
1760         return -ENOTSUPP;
1761 }
1762
1763 int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
1764                                   struct kvm_translation *tr)
1765 {
1766         int r;
1767
1768         vcpu_load(vcpu);
1769         r = kvmppc_core_vcpu_translate(vcpu, tr);
1770         vcpu_put(vcpu);
1771         return r;
1772 }
1773
1774 int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, struct kvm_dirty_log *log)
1775 {
1776         return -ENOTSUPP;
1777 }
1778
1779 void kvmppc_core_free_memslot(struct kvm *kvm, struct kvm_memory_slot *free,
1780                               struct kvm_memory_slot *dont)
1781 {
1782 }
1783
1784 int kvmppc_core_create_memslot(struct kvm *kvm, struct kvm_memory_slot *slot,
1785                                unsigned long npages)
1786 {
1787         return 0;
1788 }
1789
1790 int kvmppc_core_prepare_memory_region(struct kvm *kvm,
1791                                       struct kvm_memory_slot *memslot,
1792                                       const struct kvm_userspace_memory_region *mem)
1793 {
1794         return 0;
1795 }
1796
1797 void kvmppc_core_commit_memory_region(struct kvm *kvm,
1798                                 const struct kvm_userspace_memory_region *mem,
1799                                 const struct kvm_memory_slot *old,
1800                                 const struct kvm_memory_slot *new,
1801                                 enum kvm_mr_change change)
1802 {
1803 }
1804
1805 void kvmppc_core_flush_memslot(struct kvm *kvm, struct kvm_memory_slot *memslot)
1806 {
1807 }
1808
1809 void kvmppc_set_epcr(struct kvm_vcpu *vcpu, u32 new_epcr)
1810 {
1811 #if defined(CONFIG_64BIT)
1812         vcpu->arch.epcr = new_epcr;
1813 #ifdef CONFIG_KVM_BOOKE_HV
1814         vcpu->arch.shadow_epcr &= ~SPRN_EPCR_GICM;
1815         if (vcpu->arch.epcr  & SPRN_EPCR_ICM)
1816                 vcpu->arch.shadow_epcr |= SPRN_EPCR_GICM;
1817 #endif
1818 #endif
1819 }
1820
1821 void kvmppc_set_tcr(struct kvm_vcpu *vcpu, u32 new_tcr)
1822 {
1823         vcpu->arch.tcr = new_tcr;
1824         arm_next_watchdog(vcpu);
1825         update_timer_ints(vcpu);
1826 }
1827
1828 void kvmppc_set_tsr_bits(struct kvm_vcpu *vcpu, u32 tsr_bits)
1829 {
1830         set_bits(tsr_bits, &vcpu->arch.tsr);
1831         smp_wmb();
1832         kvm_make_request(KVM_REQ_PENDING_TIMER, vcpu);
1833         kvm_vcpu_kick(vcpu);
1834 }
1835
1836 void kvmppc_clr_tsr_bits(struct kvm_vcpu *vcpu, u32 tsr_bits)
1837 {
1838         clear_bits(tsr_bits, &vcpu->arch.tsr);
1839
1840         /*
1841          * We may have stopped the watchdog due to
1842          * being stuck on final expiration.
1843          */
1844         if (tsr_bits & (TSR_ENW | TSR_WIS))
1845                 arm_next_watchdog(vcpu);
1846
1847         update_timer_ints(vcpu);
1848 }
1849
1850 void kvmppc_decrementer_func(struct kvm_vcpu *vcpu)
1851 {
1852         if (vcpu->arch.tcr & TCR_ARE) {
1853                 vcpu->arch.dec = vcpu->arch.decar;
1854                 kvmppc_emulate_dec(vcpu);
1855         }
1856
1857         kvmppc_set_tsr_bits(vcpu, TSR_DIS);
1858 }
1859
1860 static int kvmppc_booke_add_breakpoint(struct debug_reg *dbg_reg,
1861                                        uint64_t addr, int index)
1862 {
1863         switch (index) {
1864         case 0:
1865                 dbg_reg->dbcr0 |= DBCR0_IAC1;
1866                 dbg_reg->iac1 = addr;
1867                 break;
1868         case 1:
1869                 dbg_reg->dbcr0 |= DBCR0_IAC2;
1870                 dbg_reg->iac2 = addr;
1871                 break;
1872 #if CONFIG_PPC_ADV_DEBUG_IACS > 2
1873         case 2:
1874                 dbg_reg->dbcr0 |= DBCR0_IAC3;
1875                 dbg_reg->iac3 = addr;
1876                 break;
1877         case 3:
1878                 dbg_reg->dbcr0 |= DBCR0_IAC4;
1879                 dbg_reg->iac4 = addr;
1880                 break;
1881 #endif
1882         default:
1883                 return -EINVAL;
1884         }
1885
1886         dbg_reg->dbcr0 |= DBCR0_IDM;
1887         return 0;
1888 }
1889
1890 static int kvmppc_booke_add_watchpoint(struct debug_reg *dbg_reg, uint64_t addr,
1891                                        int type, int index)
1892 {
1893         switch (index) {
1894         case 0:
1895                 if (type & KVMPPC_DEBUG_WATCH_READ)
1896                         dbg_reg->dbcr0 |= DBCR0_DAC1R;
1897                 if (type & KVMPPC_DEBUG_WATCH_WRITE)
1898                         dbg_reg->dbcr0 |= DBCR0_DAC1W;
1899                 dbg_reg->dac1 = addr;
1900                 break;
1901         case 1:
1902                 if (type & KVMPPC_DEBUG_WATCH_READ)
1903                         dbg_reg->dbcr0 |= DBCR0_DAC2R;
1904                 if (type & KVMPPC_DEBUG_WATCH_WRITE)
1905                         dbg_reg->dbcr0 |= DBCR0_DAC2W;
1906                 dbg_reg->dac2 = addr;
1907                 break;
1908         default:
1909                 return -EINVAL;
1910         }
1911
1912         dbg_reg->dbcr0 |= DBCR0_IDM;
1913         return 0;
1914 }
1915 void kvm_guest_protect_msr(struct kvm_vcpu *vcpu, ulong prot_bitmap, bool set)
1916 {
1917         /* XXX: Add similar MSR protection for BookE-PR */
1918 #ifdef CONFIG_KVM_BOOKE_HV
1919         BUG_ON(prot_bitmap & ~(MSRP_UCLEP | MSRP_DEP | MSRP_PMMP));
1920         if (set) {
1921                 if (prot_bitmap & MSR_UCLE)
1922                         vcpu->arch.shadow_msrp |= MSRP_UCLEP;
1923                 if (prot_bitmap & MSR_DE)
1924                         vcpu->arch.shadow_msrp |= MSRP_DEP;
1925                 if (prot_bitmap & MSR_PMM)
1926                         vcpu->arch.shadow_msrp |= MSRP_PMMP;
1927         } else {
1928                 if (prot_bitmap & MSR_UCLE)
1929                         vcpu->arch.shadow_msrp &= ~MSRP_UCLEP;
1930                 if (prot_bitmap & MSR_DE)
1931                         vcpu->arch.shadow_msrp &= ~MSRP_DEP;
1932                 if (prot_bitmap & MSR_PMM)
1933                         vcpu->arch.shadow_msrp &= ~MSRP_PMMP;
1934         }
1935 #endif
1936 }
1937
1938 int kvmppc_xlate(struct kvm_vcpu *vcpu, ulong eaddr, enum xlate_instdata xlid,
1939                  enum xlate_readwrite xlrw, struct kvmppc_pte *pte)
1940 {
1941         int gtlb_index;
1942         gpa_t gpaddr;
1943
1944 #ifdef CONFIG_KVM_E500V2
1945         if (!(vcpu->arch.shared->msr & MSR_PR) &&
1946             (eaddr & PAGE_MASK) == vcpu->arch.magic_page_ea) {
1947                 pte->eaddr = eaddr;
1948                 pte->raddr = (vcpu->arch.magic_page_pa & PAGE_MASK) |
1949                              (eaddr & ~PAGE_MASK);
1950                 pte->vpage = eaddr >> PAGE_SHIFT;
1951                 pte->may_read = true;
1952                 pte->may_write = true;
1953                 pte->may_execute = true;
1954
1955                 return 0;
1956         }
1957 #endif
1958
1959         /* Check the guest TLB. */
1960         switch (xlid) {
1961         case XLATE_INST:
1962                 gtlb_index = kvmppc_mmu_itlb_index(vcpu, eaddr);
1963                 break;
1964         case XLATE_DATA:
1965                 gtlb_index = kvmppc_mmu_dtlb_index(vcpu, eaddr);
1966                 break;
1967         default:
1968                 BUG();
1969         }
1970
1971         /* Do we have a TLB entry at all? */
1972         if (gtlb_index < 0)
1973                 return -ENOENT;
1974
1975         gpaddr = kvmppc_mmu_xlate(vcpu, gtlb_index, eaddr);
1976
1977         pte->eaddr = eaddr;
1978         pte->raddr = (gpaddr & PAGE_MASK) | (eaddr & ~PAGE_MASK);
1979         pte->vpage = eaddr >> PAGE_SHIFT;
1980
1981         /* XXX read permissions from the guest TLB */
1982         pte->may_read = true;
1983         pte->may_write = true;
1984         pte->may_execute = true;
1985
1986         return 0;
1987 }
1988
1989 int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
1990                                          struct kvm_guest_debug *dbg)
1991 {
1992         struct debug_reg *dbg_reg;
1993         int n, b = 0, w = 0;
1994         int ret = 0;
1995
1996         vcpu_load(vcpu);
1997
1998         if (!(dbg->control & KVM_GUESTDBG_ENABLE)) {
1999                 vcpu->arch.dbg_reg.dbcr0 = 0;
2000                 vcpu->guest_debug = 0;
2001                 kvm_guest_protect_msr(vcpu, MSR_DE, false);
2002                 goto out;
2003         }
2004
2005         kvm_guest_protect_msr(vcpu, MSR_DE, true);
2006         vcpu->guest_debug = dbg->control;
2007         vcpu->arch.dbg_reg.dbcr0 = 0;
2008
2009         if (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP)
2010                 vcpu->arch.dbg_reg.dbcr0 |= DBCR0_IDM | DBCR0_IC;
2011
2012         /* Code below handles only HW breakpoints */
2013         dbg_reg = &(vcpu->arch.dbg_reg);
2014
2015 #ifdef CONFIG_KVM_BOOKE_HV
2016         /*
2017          * On BookE-HV (e500mc) the guest is always executed with MSR.GS=1
2018          * DBCR1 and DBCR2 are set to trigger debug events when MSR.PR is 0
2019          */
2020         dbg_reg->dbcr1 = 0;
2021         dbg_reg->dbcr2 = 0;
2022 #else
2023         /*
2024          * On BookE-PR (e500v2) the guest is always executed with MSR.PR=1
2025          * We set DBCR1 and DBCR2 to only trigger debug events when MSR.PR
2026          * is set.
2027          */
2028         dbg_reg->dbcr1 = DBCR1_IAC1US | DBCR1_IAC2US | DBCR1_IAC3US |
2029                           DBCR1_IAC4US;
2030         dbg_reg->dbcr2 = DBCR2_DAC1US | DBCR2_DAC2US;
2031 #endif
2032
2033         if (!(vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP))
2034                 goto out;
2035
2036         ret = -EINVAL;
2037         for (n = 0; n < (KVMPPC_BOOKE_IAC_NUM + KVMPPC_BOOKE_DAC_NUM); n++) {
2038                 uint64_t addr = dbg->arch.bp[n].addr;
2039                 uint32_t type = dbg->arch.bp[n].type;
2040
2041                 if (type == KVMPPC_DEBUG_NONE)
2042                         continue;
2043
2044                 if (type & ~(KVMPPC_DEBUG_WATCH_READ |
2045                              KVMPPC_DEBUG_WATCH_WRITE |
2046                              KVMPPC_DEBUG_BREAKPOINT))
2047                         goto out;
2048
2049                 if (type & KVMPPC_DEBUG_BREAKPOINT) {
2050                         /* Setting H/W breakpoint */
2051                         if (kvmppc_booke_add_breakpoint(dbg_reg, addr, b++))
2052                                 goto out;
2053                 } else {
2054                         /* Setting H/W watchpoint */
2055                         if (kvmppc_booke_add_watchpoint(dbg_reg, addr,
2056                                                         type, w++))
2057                                 goto out;
2058                 }
2059         }
2060
2061         ret = 0;
2062 out:
2063         vcpu_put(vcpu);
2064         return ret;
2065 }
2066
2067 void kvmppc_booke_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
2068 {
2069         vcpu->cpu = smp_processor_id();
2070         current->thread.kvm_vcpu = vcpu;
2071 }
2072
2073 void kvmppc_booke_vcpu_put(struct kvm_vcpu *vcpu)
2074 {
2075         current->thread.kvm_vcpu = NULL;
2076         vcpu->cpu = -1;
2077
2078         /* Clear pending debug event in DBSR */
2079         kvmppc_clear_dbsr();
2080 }
2081
2082 void kvmppc_mmu_destroy(struct kvm_vcpu *vcpu)
2083 {
2084         vcpu->kvm->arch.kvm_ops->mmu_destroy(vcpu);
2085 }
2086
2087 int kvmppc_core_init_vm(struct kvm *kvm)
2088 {
2089         return kvm->arch.kvm_ops->init_vm(kvm);
2090 }
2091
2092 int kvmppc_core_vcpu_create(struct kvm_vcpu *vcpu)
2093 {
2094         int i;
2095         int r;
2096
2097         r = vcpu->kvm->arch.kvm_ops->vcpu_create(vcpu);
2098         if (r)
2099                 return r;
2100
2101         /* Initial guest state: 16MB mapping 0 -> 0, PC = 0, MSR = 0, R1 = 16MB */
2102         vcpu->arch.regs.nip = 0;
2103         vcpu->arch.shared->pir = vcpu->vcpu_id;
2104         kvmppc_set_gpr(vcpu, 1, (16<<20) - 8); /* -8 for the callee-save LR slot */
2105         kvmppc_set_msr(vcpu, 0);
2106
2107 #ifndef CONFIG_KVM_BOOKE_HV
2108         vcpu->arch.shadow_msr = MSR_USER | MSR_IS | MSR_DS;
2109         vcpu->arch.shadow_pid = 1;
2110         vcpu->arch.shared->msr = 0;
2111 #endif
2112
2113         /* Eye-catching numbers so we know if the guest takes an interrupt
2114          * before it's programmed its own IVPR/IVORs. */
2115         vcpu->arch.ivpr = 0x55550000;
2116         for (i = 0; i < BOOKE_IRQPRIO_MAX; i++)
2117                 vcpu->arch.ivor[i] = 0x7700 | i * 4;
2118
2119         kvmppc_init_timing_stats(vcpu);
2120
2121         r = kvmppc_core_vcpu_setup(vcpu);
2122         if (r)
2123                 vcpu->kvm->arch.kvm_ops->vcpu_free(vcpu);
2124         kvmppc_sanity_check(vcpu);
2125         return r;
2126 }
2127
2128 void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu)
2129 {
2130         vcpu->kvm->arch.kvm_ops->vcpu_free(vcpu);
2131 }
2132
2133 void kvmppc_core_destroy_vm(struct kvm *kvm)
2134 {
2135         kvm->arch.kvm_ops->destroy_vm(kvm);
2136 }
2137
2138 void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
2139 {
2140         vcpu->kvm->arch.kvm_ops->vcpu_load(vcpu, cpu);
2141 }
2142
2143 void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu)
2144 {
2145         vcpu->kvm->arch.kvm_ops->vcpu_put(vcpu);
2146 }
2147
2148 int __init kvmppc_booke_init(void)
2149 {
2150 #ifndef CONFIG_KVM_BOOKE_HV
2151         unsigned long ivor[16];
2152         unsigned long *handler = kvmppc_booke_handler_addr;
2153         unsigned long max_ivor = 0;
2154         unsigned long handler_len;
2155         int i;
2156
2157         /* We install our own exception handlers by hijacking IVPR. IVPR must
2158          * be 16-bit aligned, so we need a 64KB allocation. */
2159         kvmppc_booke_handlers = __get_free_pages(GFP_KERNEL | __GFP_ZERO,
2160                                                  VCPU_SIZE_ORDER);
2161         if (!kvmppc_booke_handlers)
2162                 return -ENOMEM;
2163
2164         /* XXX make sure our handlers are smaller than Linux's */
2165
2166         /* Copy our interrupt handlers to match host IVORs. That way we don't
2167          * have to swap the IVORs on every guest/host transition. */
2168         ivor[0] = mfspr(SPRN_IVOR0);
2169         ivor[1] = mfspr(SPRN_IVOR1);
2170         ivor[2] = mfspr(SPRN_IVOR2);
2171         ivor[3] = mfspr(SPRN_IVOR3);
2172         ivor[4] = mfspr(SPRN_IVOR4);
2173         ivor[5] = mfspr(SPRN_IVOR5);
2174         ivor[6] = mfspr(SPRN_IVOR6);
2175         ivor[7] = mfspr(SPRN_IVOR7);
2176         ivor[8] = mfspr(SPRN_IVOR8);
2177         ivor[9] = mfspr(SPRN_IVOR9);
2178         ivor[10] = mfspr(SPRN_IVOR10);
2179         ivor[11] = mfspr(SPRN_IVOR11);
2180         ivor[12] = mfspr(SPRN_IVOR12);
2181         ivor[13] = mfspr(SPRN_IVOR13);
2182         ivor[14] = mfspr(SPRN_IVOR14);
2183         ivor[15] = mfspr(SPRN_IVOR15);
2184
2185         for (i = 0; i < 16; i++) {
2186                 if (ivor[i] > max_ivor)
2187                         max_ivor = i;
2188
2189                 handler_len = handler[i + 1] - handler[i];
2190                 memcpy((void *)kvmppc_booke_handlers + ivor[i],
2191                        (void *)handler[i], handler_len);
2192         }
2193
2194         handler_len = handler[max_ivor + 1] - handler[max_ivor];
2195         flush_icache_range(kvmppc_booke_handlers, kvmppc_booke_handlers +
2196                            ivor[max_ivor] + handler_len);
2197 #endif /* !BOOKE_HV */
2198         return 0;
2199 }
2200
2201 void __exit kvmppc_booke_exit(void)
2202 {
2203         free_pages(kvmppc_booke_handlers, VCPU_SIZE_ORDER);
2204         kvm_exit();
2205 }