arch/powerpc/kvm/booke.c

   1 /*
   2  * This program is free software; you can redistribute it and/or modify
   3  * it under the terms of the GNU General Public License, version 2, as
   4  * published by the Free Software Foundation.
   5  *
   6  * This program is distributed in the hope that it will be useful,
   7  * but WITHOUT ANY WARRANTY; without even the implied warranty of
   8  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   9  * GNU General Public License for more details.
  10  *
  11  * You should have received a copy of the GNU General Public License
  12  * along with this program; if not, write to the Free Software
  13  * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  14  *
  15  * Copyright IBM Corp. 2007
  16  * Copyright 2010-2011 Freescale Semiconductor, Inc.
  17  *
  18  * Authors: Hollis Blanchard <hollisb@us.ibm.com>
  19  *          Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
  20  *          Scott Wood <scottwood@freescale.com>
  21  *          Varun Sethi <varun.sethi@freescale.com>
  22  */
  23
  24 #include <linux/errno.h>
  25 #include <linux/err.h>
  26 #include <linux/kvm_host.h>
  27 #include <linux/gfp.h>
  28 #include <linux/module.h>
  29 #include <linux/vmalloc.h>
  30 #include <linux/fs.h>
  31
  32 #include <asm/cputable.h>
  33 #include <linux/uaccess.h>
  34 #include <asm/kvm_ppc.h>
  35 #include <asm/cacheflush.h>
  36 #include <asm/dbell.h>
  37 #include <asm/hw_irq.h>
  38 #include <asm/irq.h>
  39 #include <asm/time.h>
  40
  41 #include "timing.h"
  42 #include "booke.h"
  43
  44 #define CREATE_TRACE_POINTS
  45 #include "trace_booke.h"
  46
  47 unsigned long kvmppc_booke_handlers;
  48
  49 #define VM_STAT(x) offsetof(struct kvm, stat.x), KVM_STAT_VM
  50 #define VCPU_STAT(x) offsetof(struct kvm_vcpu, stat.x), KVM_STAT_VCPU
  51
  52 struct kvm_stats_debugfs_item debugfs_entries[] = {
  53         { "mmio",       VCPU_STAT(mmio_exits) },
  54         { "sig",        VCPU_STAT(signal_exits) },
  55         { "itlb_r",     VCPU_STAT(itlb_real_miss_exits) },
  56         { "itlb_v",     VCPU_STAT(itlb_virt_miss_exits) },
  57         { "dtlb_r",     VCPU_STAT(dtlb_real_miss_exits) },
  58         { "dtlb_v",     VCPU_STAT(dtlb_virt_miss_exits) },
  59         { "sysc",       VCPU_STAT(syscall_exits) },
  60         { "isi",        VCPU_STAT(isi_exits) },
  61         { "dsi",        VCPU_STAT(dsi_exits) },
  62         { "inst_emu",   VCPU_STAT(emulated_inst_exits) },
  63         { "dec",        VCPU_STAT(dec_exits) },
  64         { "ext_intr",   VCPU_STAT(ext_intr_exits) },
  65         { "halt_successful_poll", VCPU_STAT(halt_successful_poll) },
  66         { "halt_attempted_poll", VCPU_STAT(halt_attempted_poll) },
  67         { "halt_poll_invalid", VCPU_STAT(halt_poll_invalid) },
  68         { "halt_wakeup", VCPU_STAT(halt_wakeup) },
  69         { "doorbell", VCPU_STAT(dbell_exits) },
  70         { "guest doorbell", VCPU_STAT(gdbell_exits) },
  71         { "remote_tlb_flush", VM_STAT(remote_tlb_flush) },
  72         { NULL }
  73 };
  74
  75 /* TODO: use vcpu_printf() */
  76 void kvmppc_dump_vcpu(struct kvm_vcpu *vcpu)
  77 {
  78         int i;
  79
  80         printk("pc:   %08lx msr:  %08llx\n", vcpu->arch.regs.nip,
  81                         vcpu->arch.shared->msr);
  82         printk("lr:   %08lx ctr:  %08lx\n", vcpu->arch.regs.link,
  83                         vcpu->arch.regs.ctr);
  84         printk("srr0: %08llx srr1: %08llx\n", vcpu->arch.shared->srr0,
  85                                             vcpu->arch.shared->srr1);
  86
  87         printk("exceptions: %08lx\n", vcpu->arch.pending_exceptions);
  88
  89         for (i = 0; i < 32; i += 4) {
  90                 printk("gpr%02d: %08lx %08lx %08lx %08lx\n", i,
  91                        kvmppc_get_gpr(vcpu, i),
  92                        kvmppc_get_gpr(vcpu, i+1),
  93                        kvmppc_get_gpr(vcpu, i+2),
  94                        kvmppc_get_gpr(vcpu, i+3));
  95         }
  96 }
  97
  98 #ifdef CONFIG_SPE
  99 void kvmppc_vcpu_disable_spe(struct kvm_vcpu *vcpu)
 100 {
 101         preempt_disable();
 102         enable_kernel_spe();
 103         kvmppc_save_guest_spe(vcpu);
 104         disable_kernel_spe();
 105         vcpu->arch.shadow_msr &= ~MSR_SPE;
 106         preempt_enable();
 107 }
 108
 109 static void kvmppc_vcpu_enable_spe(struct kvm_vcpu *vcpu)
 110 {
 111         preempt_disable();
 112         enable_kernel_spe();
 113         kvmppc_load_guest_spe(vcpu);
 114         disable_kernel_spe();
 115         vcpu->arch.shadow_msr |= MSR_SPE;
 116         preempt_enable();
 117 }
 118
 119 static void kvmppc_vcpu_sync_spe(struct kvm_vcpu *vcpu)
 120 {
 121         if (vcpu->arch.shared->msr & MSR_SPE) {
 122                 if (!(vcpu->arch.shadow_msr & MSR_SPE))
 123                         kvmppc_vcpu_enable_spe(vcpu);
 124         } else if (vcpu->arch.shadow_msr & MSR_SPE) {
 125                 kvmppc_vcpu_disable_spe(vcpu);
 126         }
 127 }
 128 #else
 129 static void kvmppc_vcpu_sync_spe(struct kvm_vcpu *vcpu)
 130 {
 131 }
 132 #endif
 133
 134 /*
 135  * Load up guest vcpu FP state if it's needed.
 136  * It also set the MSR_FP in thread so that host know
 137  * we're holding FPU, and then host can help to save
 138  * guest vcpu FP state if other threads require to use FPU.
 139  * This simulates an FP unavailable fault.
 140  *
 141  * It requires to be called with preemption disabled.
 142  */
 143 static inline void kvmppc_load_guest_fp(struct kvm_vcpu *vcpu)
 144 {
 145 #ifdef CONFIG_PPC_FPU
 146         if (!(current->thread.regs->msr & MSR_FP)) {
 147                 enable_kernel_fp();
 148                 load_fp_state(&vcpu->arch.fp);
 149                 disable_kernel_fp();
 150                 current->thread.fp_save_area = &vcpu->arch.fp;
 151                 current->thread.regs->msr |= MSR_FP;
 152         }
 153 #endif
 154 }
 155
 156 /*
 157  * Save guest vcpu FP state into thread.
 158  * It requires to be called with preemption disabled.
 159  */
 160 static inline void kvmppc_save_guest_fp(struct kvm_vcpu *vcpu)
 161 {
 162 #ifdef CONFIG_PPC_FPU
 163         if (current->thread.regs->msr & MSR_FP)
 164                 giveup_fpu(current);
 165         current->thread.fp_save_area = NULL;
 166 #endif
 167 }
 168
 169 static void kvmppc_vcpu_sync_fpu(struct kvm_vcpu *vcpu)
 170 {
 171 #if defined(CONFIG_PPC_FPU) && !defined(CONFIG_KVM_BOOKE_HV)
 172         /* We always treat the FP bit as enabled from the host
 173            perspective, so only need to adjust the shadow MSR */
 174         vcpu->arch.shadow_msr &= ~MSR_FP;
 175         vcpu->arch.shadow_msr |= vcpu->arch.shared->msr & MSR_FP;
 176 #endif
 177 }
 178
 179 /*
 180  * Simulate AltiVec unavailable fault to load guest state
 181  * from thread to AltiVec unit.
 182  * It requires to be called with preemption disabled.
 183  */
 184 static inline void kvmppc_load_guest_altivec(struct kvm_vcpu *vcpu)
 185 {
 186 #ifdef CONFIG_ALTIVEC
 187         if (cpu_has_feature(CPU_FTR_ALTIVEC)) {
 188                 if (!(current->thread.regs->msr & MSR_VEC)) {
 189                         enable_kernel_altivec();
 190                         load_vr_state(&vcpu->arch.vr);
 191                         disable_kernel_altivec();
 192                         current->thread.vr_save_area = &vcpu->arch.vr;
 193                         current->thread.regs->msr |= MSR_VEC;
 194                 }
 195         }
 196 #endif
 197 }
 198
 199 /*
 200  * Save guest vcpu AltiVec state into thread.
 201  * It requires to be called with preemption disabled.
 202  */
 203 static inline void kvmppc_save_guest_altivec(struct kvm_vcpu *vcpu)
 204 {
 205 #ifdef CONFIG_ALTIVEC
 206         if (cpu_has_feature(CPU_FTR_ALTIVEC)) {
 207                 if (current->thread.regs->msr & MSR_VEC)
 208                         giveup_altivec(current);
 209                 current->thread.vr_save_area = NULL;
 210         }
 211 #endif
 212 }
 213
 214 static void kvmppc_vcpu_sync_debug(struct kvm_vcpu *vcpu)
 215 {
 216         /* Synchronize guest's desire to get debug interrupts into shadow MSR */
 217 #ifndef CONFIG_KVM_BOOKE_HV
 218         vcpu->arch.shadow_msr &= ~MSR_DE;
 219         vcpu->arch.shadow_msr |= vcpu->arch.shared->msr & MSR_DE;
 220 #endif
 221
 222         /* Force enable debug interrupts when user space wants to debug */
 223         if (vcpu->guest_debug) {
 224 #ifdef CONFIG_KVM_BOOKE_HV
 225                 /*
 226                  * Since there is no shadow MSR, sync MSR_DE into the guest
 227                  * visible MSR.
 228                  */
 229                 vcpu->arch.shared->msr |= MSR_DE;
 230 #else
 231                 vcpu->arch.shadow_msr |= MSR_DE;
 232                 vcpu->arch.shared->msr &= ~MSR_DE;
 233 #endif
 234         }
 235 }
 236
 237 /*
 238  * Helper function for "full" MSR writes.  No need to call this if only
 239  * EE/CE/ME/DE/RI are changing.
 240  */
 241 void kvmppc_set_msr(struct kvm_vcpu *vcpu, u32 new_msr)
 242 {
 243         u32 old_msr = vcpu->arch.shared->msr;
 244
 245 #ifdef CONFIG_KVM_BOOKE_HV
 246         new_msr |= MSR_GS;
 247 #endif
 248
 249         vcpu->arch.shared->msr = new_msr;
 250
 251         kvmppc_mmu_msr_notify(vcpu, old_msr);
 252         kvmppc_vcpu_sync_spe(vcpu);
 253         kvmppc_vcpu_sync_fpu(vcpu);
 254         kvmppc_vcpu_sync_debug(vcpu);
 255 }
 256
 257 static void kvmppc_booke_queue_irqprio(struct kvm_vcpu *vcpu,
 258                                        unsigned int priority)
 259 {
 260         trace_kvm_booke_queue_irqprio(vcpu, priority);
 261         set_bit(priority, &vcpu->arch.pending_exceptions);
 262 }
 263
 264 void kvmppc_core_queue_dtlb_miss(struct kvm_vcpu *vcpu,
 265                                  ulong dear_flags, ulong esr_flags)
 266 {
 267         vcpu->arch.queued_dear = dear_flags;
 268         vcpu->arch.queued_esr = esr_flags;
 269         kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_DTLB_MISS);
 270 }
 271
 272 void kvmppc_core_queue_data_storage(struct kvm_vcpu *vcpu,
 273                                     ulong dear_flags, ulong esr_flags)
 274 {
 275         vcpu->arch.queued_dear = dear_flags;
 276         vcpu->arch.queued_esr = esr_flags;
 277         kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_DATA_STORAGE);
 278 }
 279
 280 void kvmppc_core_queue_itlb_miss(struct kvm_vcpu *vcpu)
 281 {
 282         kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_ITLB_MISS);
 283 }
 284
 285 void kvmppc_core_queue_inst_storage(struct kvm_vcpu *vcpu, ulong esr_flags)
 286 {
 287         vcpu->arch.queued_esr = esr_flags;
 288         kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_INST_STORAGE);
 289 }
 290
 291 static void kvmppc_core_queue_alignment(struct kvm_vcpu *vcpu, ulong dear_flags,
 292                                         ulong esr_flags)
 293 {
 294         vcpu->arch.queued_dear = dear_flags;
 295         vcpu->arch.queued_esr = esr_flags;
 296         kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_ALIGNMENT);
 297 }
 298
 299 void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong esr_flags)
 300 {
 301         vcpu->arch.queued_esr = esr_flags;
 302         kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_PROGRAM);
 303 }
 304
 305 void kvmppc_core_queue_fpunavail(struct kvm_vcpu *vcpu)
 306 {
 307         kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_FP_UNAVAIL);
 308 }
 309
 310 #ifdef CONFIG_ALTIVEC
 311 void kvmppc_core_queue_vec_unavail(struct kvm_vcpu *vcpu)
 312 {
 313         kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_ALTIVEC_UNAVAIL);
 314 }
 315 #endif
 316
 317 void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu)
 318 {
 319         kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_DECREMENTER);
 320 }
 321
 322 int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu)
 323 {
 324         return test_bit(BOOKE_IRQPRIO_DECREMENTER, &vcpu->arch.pending_exceptions);
 325 }
 326
 327 void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu)
 328 {
 329         clear_bit(BOOKE_IRQPRIO_DECREMENTER, &vcpu->arch.pending_exceptions);
 330 }
 331
 332 void kvmppc_core_queue_external(struct kvm_vcpu *vcpu,
 333                                 struct kvm_interrupt *irq)
 334 {
 335         unsigned int prio = BOOKE_IRQPRIO_EXTERNAL;
 336
 337         if (irq->irq == KVM_INTERRUPT_SET_LEVEL)
 338                 prio = BOOKE_IRQPRIO_EXTERNAL_LEVEL;
 339
 340         kvmppc_booke_queue_irqprio(vcpu, prio);
 341 }
 342
 343 void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu)
 344 {
 345         clear_bit(BOOKE_IRQPRIO_EXTERNAL, &vcpu->arch.pending_exceptions);
 346         clear_bit(BOOKE_IRQPRIO_EXTERNAL_LEVEL, &vcpu->arch.pending_exceptions);
 347 }
 348
 349 static void kvmppc_core_queue_watchdog(struct kvm_vcpu *vcpu)
 350 {
 351         kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_WATCHDOG);
 352 }
 353
 354 static void kvmppc_core_dequeue_watchdog(struct kvm_vcpu *vcpu)
 355 {
 356         clear_bit(BOOKE_IRQPRIO_WATCHDOG, &vcpu->arch.pending_exceptions);
 357 }
 358
 359 void kvmppc_core_queue_debug(struct kvm_vcpu *vcpu)
 360 {
 361         kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_DEBUG);
 362 }
 363
 364 void kvmppc_core_dequeue_debug(struct kvm_vcpu *vcpu)
 365 {
 366         clear_bit(BOOKE_IRQPRIO_DEBUG, &vcpu->arch.pending_exceptions);
 367 }
 368
 369 static void set_guest_srr(struct kvm_vcpu *vcpu, unsigned long srr0, u32 srr1)
 370 {
 371         kvmppc_set_srr0(vcpu, srr0);
 372         kvmppc_set_srr1(vcpu, srr1);
 373 }
 374
 375 static void set_guest_csrr(struct kvm_vcpu *vcpu, unsigned long srr0, u32 srr1)
 376 {
 377         vcpu->arch.csrr0 = srr0;
 378         vcpu->arch.csrr1 = srr1;
 379 }
 380
 381 static void set_guest_dsrr(struct kvm_vcpu *vcpu, unsigned long srr0, u32 srr1)
 382 {
 383         if (cpu_has_feature(CPU_FTR_DEBUG_LVL_EXC)) {
 384                 vcpu->arch.dsrr0 = srr0;
 385                 vcpu->arch.dsrr1 = srr1;
 386         } else {
 387                 set_guest_csrr(vcpu, srr0, srr1);
 388         }
 389 }
 390
 391 static void set_guest_mcsrr(struct kvm_vcpu *vcpu, unsigned long srr0, u32 srr1)
 392 {
 393         vcpu->arch.mcsrr0 = srr0;
 394         vcpu->arch.mcsrr1 = srr1;
 395 }
 396
 397 /* Deliver the interrupt of the corresponding priority, if possible. */
 398 static int kvmppc_booke_irqprio_deliver(struct kvm_vcpu *vcpu,
 399                                         unsigned int priority)
 400 {
 401         int allowed = 0;
 402         ulong msr_mask = 0;
 403         bool update_esr = false, update_dear = false, update_epr = false;
 404         ulong crit_raw = vcpu->arch.shared->critical;
 405         ulong crit_r1 = kvmppc_get_gpr(vcpu, 1);
 406         bool crit;
 407         bool keep_irq = false;
 408         enum int_class int_class;
 409         ulong new_msr = vcpu->arch.shared->msr;
 410
 411         /* Truncate crit indicators in 32 bit mode */
 412         if (!(vcpu->arch.shared->msr & MSR_SF)) {
 413                 crit_raw &= 0xffffffff;
 414                 crit_r1 &= 0xffffffff;
 415         }
 416
 417         /* Critical section when crit == r1 */
 418         crit = (crit_raw == crit_r1);
 419         /* ... and we're in supervisor mode */
 420         crit = crit && !(vcpu->arch.shared->msr & MSR_PR);
 421
 422         if (priority == BOOKE_IRQPRIO_EXTERNAL_LEVEL) {
 423                 priority = BOOKE_IRQPRIO_EXTERNAL;
 424                 keep_irq = true;
 425         }
 426
 427         if ((priority == BOOKE_IRQPRIO_EXTERNAL) && vcpu->arch.epr_flags)
 428                 update_epr = true;
 429
 430         switch (priority) {
 431         case BOOKE_IRQPRIO_DTLB_MISS:
 432         case BOOKE_IRQPRIO_DATA_STORAGE:
 433         case BOOKE_IRQPRIO_ALIGNMENT:
 434                 update_dear = true;
 435                 /* fall through */
 436         case BOOKE_IRQPRIO_INST_STORAGE:
 437         case BOOKE_IRQPRIO_PROGRAM:
 438                 update_esr = true;
 439                 /* fall through */
 440         case BOOKE_IRQPRIO_ITLB_MISS:
 441         case BOOKE_IRQPRIO_SYSCALL:
 442         case BOOKE_IRQPRIO_FP_UNAVAIL:
 443 #ifdef CONFIG_SPE_POSSIBLE
 444         case BOOKE_IRQPRIO_SPE_UNAVAIL:
 445         case BOOKE_IRQPRIO_SPE_FP_DATA:
 446         case BOOKE_IRQPRIO_SPE_FP_ROUND:
 447 #endif
 448 #ifdef CONFIG_ALTIVEC
 449         case BOOKE_IRQPRIO_ALTIVEC_UNAVAIL:
 450         case BOOKE_IRQPRIO_ALTIVEC_ASSIST:
 451 #endif
 452         case BOOKE_IRQPRIO_AP_UNAVAIL:
 453                 allowed = 1;
 454                 msr_mask = MSR_CE | MSR_ME | MSR_DE;
 455                 int_class = INT_CLASS_NONCRIT;
 456                 break;
 457         case BOOKE_IRQPRIO_WATCHDOG:
 458         case BOOKE_IRQPRIO_CRITICAL:
 459         case BOOKE_IRQPRIO_DBELL_CRIT:
 460                 allowed = vcpu->arch.shared->msr & MSR_CE;
 461                 allowed = allowed && !crit;
 462                 msr_mask = MSR_ME;
 463                 int_class = INT_CLASS_CRIT;
 464                 break;
 465         case BOOKE_IRQPRIO_MACHINE_CHECK:
 466                 allowed = vcpu->arch.shared->msr & MSR_ME;
 467                 allowed = allowed && !crit;
 468                 int_class = INT_CLASS_MC;
 469                 break;
 470         case BOOKE_IRQPRIO_DECREMENTER:
 471         case BOOKE_IRQPRIO_FIT:
 472                 keep_irq = true;
 473                 /* fall through */
 474         case BOOKE_IRQPRIO_EXTERNAL:
 475         case BOOKE_IRQPRIO_DBELL:
 476                 allowed = vcpu->arch.shared->msr & MSR_EE;
 477                 allowed = allowed && !crit;
 478                 msr_mask = MSR_CE | MSR_ME | MSR_DE;
 479                 int_class = INT_CLASS_NONCRIT;
 480                 break;
 481         case BOOKE_IRQPRIO_DEBUG:
 482                 allowed = vcpu->arch.shared->msr & MSR_DE;
 483                 allowed = allowed && !crit;
 484                 msr_mask = MSR_ME;
 485                 if (cpu_has_feature(CPU_FTR_DEBUG_LVL_EXC))
 486                         int_class = INT_CLASS_DBG;
 487                 else
 488                         int_class = INT_CLASS_CRIT;
 489
 490                 break;
 491         }
 492
 493         if (allowed) {
 494                 switch (int_class) {
 495                 case INT_CLASS_NONCRIT:
 496                         set_guest_srr(vcpu, vcpu->arch.regs.nip,
 497                                       vcpu->arch.shared->msr);
 498                         break;
 499                 case INT_CLASS_CRIT:
 500                         set_guest_csrr(vcpu, vcpu->arch.regs.nip,
 501                                        vcpu->arch.shared->msr);
 502                         break;
 503                 case INT_CLASS_DBG:
 504                         set_guest_dsrr(vcpu, vcpu->arch.regs.nip,
 505                                        vcpu->arch.shared->msr);
 506                         break;
 507                 case INT_CLASS_MC:
 508                         set_guest_mcsrr(vcpu, vcpu->arch.regs.nip,
 509                                         vcpu->arch.shared->msr);
 510                         break;
 511                 }
 512
 513                 vcpu->arch.regs.nip = vcpu->arch.ivpr |
 514                                         vcpu->arch.ivor[priority];
 515                 if (update_esr == true)
 516                         kvmppc_set_esr(vcpu, vcpu->arch.queued_esr);
 517                 if (update_dear == true)
 518                         kvmppc_set_dar(vcpu, vcpu->arch.queued_dear);
 519                 if (update_epr == true) {
 520                         if (vcpu->arch.epr_flags & KVMPPC_EPR_USER)
 521                                 kvm_make_request(KVM_REQ_EPR_EXIT, vcpu);
 522                         else if (vcpu->arch.epr_flags & KVMPPC_EPR_KERNEL) {
 523                                 BUG_ON(vcpu->arch.irq_type != KVMPPC_IRQ_MPIC);
 524                                 kvmppc_mpic_set_epr(vcpu);
 525                         }
 526                 }
 527
 528                 new_msr &= msr_mask;
 529 #if defined(CONFIG_64BIT)
 530                 if (vcpu->arch.epcr & SPRN_EPCR_ICM)
 531                         new_msr |= MSR_CM;
 532 #endif
 533                 kvmppc_set_msr(vcpu, new_msr);
 534
 535                 if (!keep_irq)
 536                         clear_bit(priority, &vcpu->arch.pending_exceptions);
 537         }
 538
 539 #ifdef CONFIG_KVM_BOOKE_HV
 540         /*
 541          * If an interrupt is pending but masked, raise a guest doorbell
 542          * so that we are notified when the guest enables the relevant
 543          * MSR bit.
 544          */
 545         if (vcpu->arch.pending_exceptions & BOOKE_IRQMASK_EE)
 546                 kvmppc_set_pending_interrupt(vcpu, INT_CLASS_NONCRIT);
 547         if (vcpu->arch.pending_exceptions & BOOKE_IRQMASK_CE)
 548                 kvmppc_set_pending_interrupt(vcpu, INT_CLASS_CRIT);
 549         if (vcpu->arch.pending_exceptions & BOOKE_IRQPRIO_MACHINE_CHECK)
 550                 kvmppc_set_pending_interrupt(vcpu, INT_CLASS_MC);
 551 #endif
 552
 553         return allowed;
 554 }
 555
 556 /*
 557  * Return the number of jiffies until the next timeout.  If the timeout is
 558  * longer than the NEXT_TIMER_MAX_DELTA, then return NEXT_TIMER_MAX_DELTA
 559  * because the larger value can break the timer APIs.
 560  */
 561 static unsigned long watchdog_next_timeout(struct kvm_vcpu *vcpu)
 562 {
 563         u64 tb, wdt_tb, wdt_ticks = 0;
 564         u64 nr_jiffies = 0;
 565         u32 period = TCR_GET_WP(vcpu->arch.tcr);
 566
 567         wdt_tb = 1ULL << (63 - period);
 568         tb = get_tb();
 569         /*
 570          * The watchdog timeout will hapeen when TB bit corresponding
 571          * to watchdog will toggle from 0 to 1.
 572          */
 573         if (tb & wdt_tb)
 574                 wdt_ticks = wdt_tb;
 575
 576         wdt_ticks += wdt_tb - (tb & (wdt_tb - 1));
 577
 578         /* Convert timebase ticks to jiffies */
 579         nr_jiffies = wdt_ticks;
 580
 581         if (do_div(nr_jiffies, tb_ticks_per_jiffy))
 582                 nr_jiffies++;
 583
 584         return min_t(unsigned long long, nr_jiffies, NEXT_TIMER_MAX_DELTA);
 585 }
 586
 587 static void arm_next_watchdog(struct kvm_vcpu *vcpu)
 588 {
 589         unsigned long nr_jiffies;
 590         unsigned long flags;
 591
 592         /*
 593          * If TSR_ENW and TSR_WIS are not set then no need to exit to
 594          * userspace, so clear the KVM_REQ_WATCHDOG request.
 595          */
 596         if ((vcpu->arch.tsr & (TSR_ENW | TSR_WIS)) != (TSR_ENW | TSR_WIS))
 597                 kvm_clear_request(KVM_REQ_WATCHDOG, vcpu);
 598
 599         spin_lock_irqsave(&vcpu->arch.wdt_lock, flags);
 600         nr_jiffies = watchdog_next_timeout(vcpu);
 601         /*
 602          * If the number of jiffies of watchdog timer >= NEXT_TIMER_MAX_DELTA
 603          * then do not run the watchdog timer as this can break timer APIs.
 604          */
 605         if (nr_jiffies < NEXT_TIMER_MAX_DELTA)
 606                 mod_timer(&vcpu->arch.wdt_timer, jiffies + nr_jiffies);
 607         else
 608                 del_timer(&vcpu->arch.wdt_timer);
 609         spin_unlock_irqrestore(&vcpu->arch.wdt_lock, flags);
 610 }
 611
 612 void kvmppc_watchdog_func(struct timer_list *t)
 613 {
 614         struct kvm_vcpu *vcpu = from_timer(vcpu, t, arch.wdt_timer);
 615         u32 tsr, new_tsr;
 616         int final;
 617
 618         do {
 619                 new_tsr = tsr = vcpu->arch.tsr;
 620                 final = 0;
 621
 622                 /* Time out event */
 623                 if (tsr & TSR_ENW) {
 624                         if (tsr & TSR_WIS)
 625                                 final = 1;
 626                         else
 627                                 new_tsr = tsr | TSR_WIS;
 628                 } else {
 629                         new_tsr = tsr | TSR_ENW;
 630                 }
 631         } while (cmpxchg(&vcpu->arch.tsr, tsr, new_tsr) != tsr);
 632
 633         if (new_tsr & TSR_WIS) {
 634                 smp_wmb();
 635                 kvm_make_request(KVM_REQ_PENDING_TIMER, vcpu);
 636                 kvm_vcpu_kick(vcpu);
 637         }
 638
 639         /*
 640          * If this is final watchdog expiry and some action is required
 641          * then exit to userspace.
 642          */
 643         if (final && (vcpu->arch.tcr & TCR_WRC_MASK) &&
 644             vcpu->arch.watchdog_enabled) {
 645                 smp_wmb();
 646                 kvm_make_request(KVM_REQ_WATCHDOG, vcpu);
 647                 kvm_vcpu_kick(vcpu);
 648         }
 649
 650         /*
 651          * Stop running the watchdog timer after final expiration to
 652          * prevent the host from being flooded with timers if the
 653          * guest sets a short period.
 654          * Timers will resume when TSR/TCR is updated next time.
 655          */
 656         if (!final)
 657                 arm_next_watchdog(vcpu);
 658 }
 659
 660 static void update_timer_ints(struct kvm_vcpu *vcpu)
 661 {
 662         if ((vcpu->arch.tcr & TCR_DIE) && (vcpu->arch.tsr & TSR_DIS))
 663                 kvmppc_core_queue_dec(vcpu);
 664         else
 665                 kvmppc_core_dequeue_dec(vcpu);
 666
 667         if ((vcpu->arch.tcr & TCR_WIE) && (vcpu->arch.tsr & TSR_WIS))
 668                 kvmppc_core_queue_watchdog(vcpu);
 669         else
 670                 kvmppc_core_dequeue_watchdog(vcpu);
 671 }
 672
 673 static void kvmppc_core_check_exceptions(struct kvm_vcpu *vcpu)
 674 {
 675         unsigned long *pending = &vcpu->arch.pending_exceptions;
 676         unsigned int priority;
 677
 678         priority = __ffs(*pending);
 679         while (priority < BOOKE_IRQPRIO_MAX) {
 680                 if (kvmppc_booke_irqprio_deliver(vcpu, priority))
 681                         break;
 682
 683                 priority = find_next_bit(pending,
 684                                          BITS_PER_BYTE * sizeof(*pending),
 685                                          priority + 1);
 686         }
 687
 688         /* Tell the guest about our interrupt status */
 689         vcpu->arch.shared->int_pending = !!*pending;
 690 }
 691
 692 /* Check pending exceptions and deliver one, if possible. */
 693 int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu)
 694 {
 695         int r = 0;
 696         WARN_ON_ONCE(!irqs_disabled());
 697
 698         kvmppc_core_check_exceptions(vcpu);
 699
 700         if (kvm_request_pending(vcpu)) {
 701                 /* Exception delivery raised request; start over */
 702                 return 1;
 703         }
 704
 705         if (vcpu->arch.shared->msr & MSR_WE) {
 706                 local_irq_enable();
 707                 kvm_vcpu_block(vcpu);
 708                 kvm_clear_request(KVM_REQ_UNHALT, vcpu);
 709                 hard_irq_disable();
 710
 711                 kvmppc_set_exit_type(vcpu, EMULATED_MTMSRWE_EXITS);
 712                 r = 1;
 713         };
 714
 715         return r;
 716 }
 717
 718 int kvmppc_core_check_requests(struct kvm_vcpu *vcpu)
 719 {
 720         int r = 1; /* Indicate we want to get back into the guest */
 721
 722         if (kvm_check_request(KVM_REQ_PENDING_TIMER, vcpu))
 723                 update_timer_ints(vcpu);
 724 #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC)
 725         if (kvm_check_request(KVM_REQ_TLB_FLUSH, vcpu))
 726                 kvmppc_core_flush_tlb(vcpu);
 727 #endif
 728
 729         if (kvm_check_request(KVM_REQ_WATCHDOG, vcpu)) {
 730                 vcpu->run->exit_reason = KVM_EXIT_WATCHDOG;
 731                 r = 0;
 732         }
 733
 734         if (kvm_check_request(KVM_REQ_EPR_EXIT, vcpu)) {
 735                 vcpu->run->epr.epr = 0;
 736                 vcpu->arch.epr_needed = true;
 737                 vcpu->run->exit_reason = KVM_EXIT_EPR;
 738                 r = 0;
 739         }
 740
 741         return r;
 742 }
 743
 744 int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
 745 {
 746         int ret, s;
 747         struct debug_reg debug;
 748
 749         if (!vcpu->arch.sane) {
 750                 kvm_run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
 751                 return -EINVAL;
 752         }
 753
 754         s = kvmppc_prepare_to_enter(vcpu);
 755         if (s <= 0) {
 756                 ret = s;
 757                 goto out;
 758         }
 759         /* interrupts now hard-disabled */
 760
 761 #ifdef CONFIG_PPC_FPU
 762         /* Save userspace FPU state in stack */
 763         enable_kernel_fp();
 764
 765         /*
 766          * Since we can't trap on MSR_FP in GS-mode, we consider the guest
 767          * as always using the FPU.
 768          */
 769         kvmppc_load_guest_fp(vcpu);
 770 #endif
 771
 772 #ifdef CONFIG_ALTIVEC
 773         /* Save userspace AltiVec state in stack */
 774         if (cpu_has_feature(CPU_FTR_ALTIVEC))
 775                 enable_kernel_altivec();
 776         /*
 777          * Since we can't trap on MSR_VEC in GS-mode, we consider the guest
 778          * as always using the AltiVec.
 779          */
 780         kvmppc_load_guest_altivec(vcpu);
 781 #endif
 782
 783         /* Switch to guest debug context */
 784         debug = vcpu->arch.dbg_reg;
 785         switch_booke_debug_regs(&debug);
 786         debug = current->thread.debug;
 787         current->thread.debug = vcpu->arch.dbg_reg;
 788
 789         vcpu->arch.pgdir = current->mm->pgd;
 790         kvmppc_fix_ee_before_entry();
 791
 792         ret = __kvmppc_vcpu_run(kvm_run, vcpu);
 793
 794         /* No need for guest_exit. It's done in handle_exit.
 795            We also get here with interrupts enabled. */
 796
 797         /* Switch back to user space debug context */
 798         switch_booke_debug_regs(&debug);
 799         current->thread.debug = debug;
 800
 801 #ifdef CONFIG_PPC_FPU
 802         kvmppc_save_guest_fp(vcpu);
 803 #endif
 804
 805 #ifdef CONFIG_ALTIVEC
 806         kvmppc_save_guest_altivec(vcpu);
 807 #endif
 808
 809 out:
 810         vcpu->mode = OUTSIDE_GUEST_MODE;
 811         return ret;
 812 }
 813
 814 static int emulation_exit(struct kvm_run *run, struct kvm_vcpu *vcpu)
 815 {
 816         enum emulation_result er;
 817
 818         er = kvmppc_emulate_instruction(run, vcpu);
 819         switch (er) {
 820         case EMULATE_DONE:
 821                 /* don't overwrite subtypes, just account kvm_stats */
 822                 kvmppc_account_exit_stat(vcpu, EMULATED_INST_EXITS);
 823                 /* Future optimization: only reload non-volatiles if
 824                  * they were actually modified by emulation. */
 825                 return RESUME_GUEST_NV;
 826
 827         case EMULATE_AGAIN:
 828                 return RESUME_GUEST;
 829
 830         case EMULATE_FAIL:
 831                 printk(KERN_CRIT "%s: emulation at %lx failed (%08x)\n",
 832                        __func__, vcpu->arch.regs.nip, vcpu->arch.last_inst);
 833                 /* For debugging, encode the failing instruction and
 834                  * report it to userspace. */
 835                 run->hw.hardware_exit_reason = ~0ULL << 32;
 836                 run->hw.hardware_exit_reason |= vcpu->arch.last_inst;
 837                 kvmppc_core_queue_program(vcpu, ESR_PIL);
 838                 return RESUME_HOST;
 839
 840         case EMULATE_EXIT_USER:
 841                 return RESUME_HOST;
 842
 843         default:
 844                 BUG();
 845         }
 846 }
 847
 848 static int kvmppc_handle_debug(struct kvm_run *run, struct kvm_vcpu *vcpu)
 849 {
 850         struct debug_reg *dbg_reg = &(vcpu->arch.dbg_reg);
 851         u32 dbsr = vcpu->arch.dbsr;
 852
 853         if (vcpu->guest_debug == 0) {
 854                 /*
 855                  * Debug resources belong to Guest.
 856                  * Imprecise debug event is not injected
 857                  */
 858                 if (dbsr & DBSR_IDE) {
 859                         dbsr &= ~DBSR_IDE;
 860                         if (!dbsr)
 861                                 return RESUME_GUEST;
 862                 }
 863
 864                 if (dbsr && (vcpu->arch.shared->msr & MSR_DE) &&
 865                             (vcpu->arch.dbg_reg.dbcr0 & DBCR0_IDM))
 866                         kvmppc_core_queue_debug(vcpu);
 867
 868                 /* Inject a program interrupt if trap debug is not allowed */
 869                 if ((dbsr & DBSR_TIE) && !(vcpu->arch.shared->msr & MSR_DE))
 870                         kvmppc_core_queue_program(vcpu, ESR_PTR);
 871
 872                 return RESUME_GUEST;
 873         }
 874
 875         /*
 876          * Debug resource owned by userspace.
 877          * Clear guest dbsr (vcpu->arch.dbsr)
 878          */
 879         vcpu->arch.dbsr = 0;
 880         run->debug.arch.status = 0;
 881         run->debug.arch.address = vcpu->arch.regs.nip;
 882
 883         if (dbsr & (DBSR_IAC1 | DBSR_IAC2 | DBSR_IAC3 | DBSR_IAC4)) {
 884                 run->debug.arch.status |= KVMPPC_DEBUG_BREAKPOINT;
 885         } else {
 886                 if (dbsr & (DBSR_DAC1W | DBSR_DAC2W))
 887                         run->debug.arch.status |= KVMPPC_DEBUG_WATCH_WRITE;
 888                 else if (dbsr & (DBSR_DAC1R | DBSR_DAC2R))
 889                         run->debug.arch.status |= KVMPPC_DEBUG_WATCH_READ;
 890                 if (dbsr & (DBSR_DAC1R | DBSR_DAC1W))
 891                         run->debug.arch.address = dbg_reg->dac1;
 892                 else if (dbsr & (DBSR_DAC2R | DBSR_DAC2W))
 893                         run->debug.arch.address = dbg_reg->dac2;
 894         }
 895
 896         return RESUME_HOST;
 897 }
 898
 899 static void kvmppc_fill_pt_regs(struct pt_regs *regs)
 900 {
 901         ulong r1, ip, msr, lr;
 902
 903         asm("mr %0, 1" : "=r"(r1));
 904         asm("mflr %0" : "=r"(lr));
 905         asm("mfmsr %0" : "=r"(msr));
 906         asm("bl 1f; 1: mflr %0" : "=r"(ip));
 907
 908         memset(regs, 0, sizeof(*regs));
 909         regs->gpr[1] = r1;
 910         regs->nip = ip;
 911         regs->msr = msr;
 912         regs->link = lr;
 913 }
 914
 915 /*
 916  * For interrupts needed to be handled by host interrupt handlers,
 917  * corresponding host handler are called from here in similar way
 918  * (but not exact) as they are called from low level handler
 919  * (such as from arch/powerpc/kernel/head_fsl_booke.S).
 920  */
 921 static void kvmppc_restart_interrupt(struct kvm_vcpu *vcpu,
 922                                      unsigned int exit_nr)
 923 {
 924         struct pt_regs regs;
 925
 926         switch (exit_nr) {
 927         case BOOKE_INTERRUPT_EXTERNAL:
 928                 kvmppc_fill_pt_regs(&regs);
 929                 do_IRQ(&regs);
 930                 break;
 931         case BOOKE_INTERRUPT_DECREMENTER:
 932                 kvmppc_fill_pt_regs(&regs);
 933                 timer_interrupt(&regs);
 934                 break;
 935 #if defined(CONFIG_PPC_DOORBELL)
 936         case BOOKE_INTERRUPT_DOORBELL:
 937                 kvmppc_fill_pt_regs(&regs);
 938                 doorbell_exception(&regs);
 939                 break;
 940 #endif
 941         case BOOKE_INTERRUPT_MACHINE_CHECK:
 942                 /* FIXME */
 943                 break;
 944         case BOOKE_INTERRUPT_PERFORMANCE_MONITOR:
 945                 kvmppc_fill_pt_regs(&regs);
 946                 performance_monitor_exception(&regs);
 947                 break;
 948         case BOOKE_INTERRUPT_WATCHDOG:
 949                 kvmppc_fill_pt_regs(&regs);
 950 #ifdef CONFIG_BOOKE_WDT
 951                 WatchdogException(&regs);
 952 #else
 953                 unknown_exception(&regs);
 954 #endif
 955                 break;
 956         case BOOKE_INTERRUPT_CRITICAL:
 957                 kvmppc_fill_pt_regs(&regs);
 958                 unknown_exception(&regs);
 959                 break;
 960         case BOOKE_INTERRUPT_DEBUG:
 961                 /* Save DBSR before preemption is enabled */
 962                 vcpu->arch.dbsr = mfspr(SPRN_DBSR);
 963                 kvmppc_clear_dbsr();
 964                 break;
 965         }
 966 }
 967
 968 static int kvmppc_resume_inst_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
 969                                   enum emulation_result emulated, u32 last_inst)
 970 {
 971         switch (emulated) {
 972         case EMULATE_AGAIN:
 973                 return RESUME_GUEST;
 974
 975         case EMULATE_FAIL:
 976                 pr_debug("%s: load instruction from guest address %lx failed\n",
 977                        __func__, vcpu->arch.regs.nip);
 978                 /* For debugging, encode the failing instruction and
 979                  * report it to userspace. */
 980                 run->hw.hardware_exit_reason = ~0ULL << 32;
 981                 run->hw.hardware_exit_reason |= last_inst;
 982                 kvmppc_core_queue_program(vcpu, ESR_PIL);
 983                 return RESUME_HOST;
 984
 985         default:
 986                 BUG();
 987         }
 988 }
 989
 990 /**
 991  * kvmppc_handle_exit
 992  *
 993  * Return value is in the form (errcode<<2 | RESUME_FLAG_HOST | RESUME_FLAG_NV)
 994  */
 995 int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu,
 996                        unsigned int exit_nr)
 997 {
 998         int r = RESUME_HOST;
 999         int s;
1000         int idx;
1001         u32 last_inst = KVM_INST_FETCH_FAILED;
1002         enum emulation_result emulated = EMULATE_DONE;
1003
1004         /* update before a new last_exit_type is rewritten */
1005         kvmppc_update_timing_stats(vcpu);
1006
1007         /* restart interrupts if they were meant for the host */
1008         kvmppc_restart_interrupt(vcpu, exit_nr);
1009
1010         /*
1011          * get last instruction before being preempted
1012          * TODO: for e6500 check also BOOKE_INTERRUPT_LRAT_ERROR & ESR_DATA
1013          */
1014         switch (exit_nr) {
1015         case BOOKE_INTERRUPT_DATA_STORAGE:
1016         case BOOKE_INTERRUPT_DTLB_MISS:
1017         case BOOKE_INTERRUPT_HV_PRIV:
1018                 emulated = kvmppc_get_last_inst(vcpu, INST_GENERIC, &last_inst);
1019                 break;
1020         case BOOKE_INTERRUPT_PROGRAM:
1021                 /* SW breakpoints arrive as illegal instructions on HV */
1022                 if (vcpu->guest_debug & KVM_GUESTDBG_USE_SW_BP)
1023                         emulated = kvmppc_get_last_inst(vcpu, INST_GENERIC, &last_inst);
1024                 break;
1025         default:
1026                 break;
1027         }
1028
1029         trace_kvm_exit(exit_nr, vcpu);
1030         guest_exit_irqoff();
1031
1032         local_irq_enable();
1033
1034         run->exit_reason = KVM_EXIT_UNKNOWN;
1035         run->ready_for_interrupt_injection = 1;
1036
1037         if (emulated != EMULATE_DONE) {
1038                 r = kvmppc_resume_inst_load(run, vcpu, emulated, last_inst);
1039                 goto out;
1040         }
1041
1042         switch (exit_nr) {
1043         case BOOKE_INTERRUPT_MACHINE_CHECK:
1044                 printk("MACHINE CHECK: %lx\n", mfspr(SPRN_MCSR));
1045                 kvmppc_dump_vcpu(vcpu);
1046                 /* For debugging, send invalid exit reason to user space */
1047                 run->hw.hardware_exit_reason = ~1ULL << 32;
1048                 run->hw.hardware_exit_reason |= mfspr(SPRN_MCSR);
1049                 r = RESUME_HOST;
1050                 break;
1051
1052         case BOOKE_INTERRUPT_EXTERNAL:
1053                 kvmppc_account_exit(vcpu, EXT_INTR_EXITS);
1054                 r = RESUME_GUEST;
1055                 break;
1056
1057         case BOOKE_INTERRUPT_DECREMENTER:
1058                 kvmppc_account_exit(vcpu, DEC_EXITS);
1059                 r = RESUME_GUEST;
1060                 break;
1061
1062         case BOOKE_INTERRUPT_WATCHDOG:
1063                 r = RESUME_GUEST;
1064                 break;
1065
1066         case BOOKE_INTERRUPT_DOORBELL:
1067                 kvmppc_account_exit(vcpu, DBELL_EXITS);
1068                 r = RESUME_GUEST;
1069                 break;
1070
1071         case BOOKE_INTERRUPT_GUEST_DBELL_CRIT:
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_CE or MSR_ME was not
1077                  * set.  Once we break from here we will retry delivery.
1078                  */
1079                 r = RESUME_GUEST;
1080                 break;
1081
1082         case BOOKE_INTERRUPT_GUEST_DBELL:
1083                 kvmppc_account_exit(vcpu, GDBELL_EXITS);
1084
1085                 /*
1086                  * We are here because there is a pending guest interrupt
1087                  * which could not be delivered as MSR_EE was not set.  Once
1088                  * we break from here we will retry delivery.
1089                  */
1090                 r = RESUME_GUEST;
1091                 break;
1092
1093         case BOOKE_INTERRUPT_PERFORMANCE_MONITOR:
1094                 r = RESUME_GUEST;
1095                 break;
1096
1097         case BOOKE_INTERRUPT_HV_PRIV:
1098                 r = emulation_exit(run, vcpu);
1099                 break;
1100
1101         case BOOKE_INTERRUPT_PROGRAM:
1102                 if ((vcpu->guest_debug & KVM_GUESTDBG_USE_SW_BP) &&
1103                         (last_inst == KVMPPC_INST_SW_BREAKPOINT)) {
1104                         /*
1105                          * We are here because of an SW breakpoint instr,
1106                          * so lets return to host to handle.
1107                          */
1108                         r = kvmppc_handle_debug(run, vcpu);
1109                         run->exit_reason = KVM_EXIT_DEBUG;
1110                         kvmppc_account_exit(vcpu, DEBUG_EXITS);
1111                         break;
1112                 }
1113
1114                 if (vcpu->arch.shared->msr & (MSR_PR | MSR_GS)) {
1115                         /*
1116                          * Program traps generated by user-level software must
1117                          * be handled by the guest kernel.
1118                          *
1119                          * In GS mode, hypervisor privileged instructions trap
1120                          * on BOOKE_INTERRUPT_HV_PRIV, not here, so these are
1121                          * actual program interrupts, handled by the guest.
1122                          */
1123                         kvmppc_core_queue_program(vcpu, vcpu->arch.fault_esr);
1124                         r = RESUME_GUEST;
1125                         kvmppc_account_exit(vcpu, USR_PR_INST);
1126                         break;
1127                 }
1128
1129                 r = emulation_exit(run, vcpu);
1130                 break;
1131
1132         case BOOKE_INTERRUPT_FP_UNAVAIL:
1133                 kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_FP_UNAVAIL);
1134                 kvmppc_account_exit(vcpu, FP_UNAVAIL);
1135                 r = RESUME_GUEST;
1136                 break;
1137
1138 #ifdef CONFIG_SPE
1139         case BOOKE_INTERRUPT_SPE_UNAVAIL: {
1140                 if (vcpu->arch.shared->msr & MSR_SPE)
1141                         kvmppc_vcpu_enable_spe(vcpu);
1142                 else
1143                         kvmppc_booke_queue_irqprio(vcpu,
1144                                                    BOOKE_IRQPRIO_SPE_UNAVAIL);
1145                 r = RESUME_GUEST;
1146                 break;
1147         }
1148
1149         case BOOKE_INTERRUPT_SPE_FP_DATA:
1150                 kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_SPE_FP_DATA);
1151                 r = RESUME_GUEST;
1152                 break;
1153
1154         case BOOKE_INTERRUPT_SPE_FP_ROUND:
1155                 kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_SPE_FP_ROUND);
1156                 r = RESUME_GUEST;
1157                 break;
1158 #elif defined(CONFIG_SPE_POSSIBLE)
1159         case BOOKE_INTERRUPT_SPE_UNAVAIL:
1160                 /*
1161                  * Guest wants SPE, but host kernel doesn't support it.  Send
1162                  * an "unimplemented operation" program check to the guest.
1163                  */
1164                 kvmppc_core_queue_program(vcpu, ESR_PUO | ESR_SPV);
1165                 r = RESUME_GUEST;
1166                 break;
1167
1168         /*
1169          * These really should never happen without CONFIG_SPE,
1170          * as we should never enable the real MSR[SPE] in the guest.
1171          */
1172         case BOOKE_INTERRUPT_SPE_FP_DATA:
1173         case BOOKE_INTERRUPT_SPE_FP_ROUND:
1174                 printk(KERN_CRIT "%s: unexpected SPE interrupt %u at %08lx\n",
1175                        __func__, exit_nr, vcpu->arch.regs.nip);
1176                 run->hw.hardware_exit_reason = exit_nr;
1177                 r = RESUME_HOST;
1178                 break;
1179 #endif /* CONFIG_SPE_POSSIBLE */
1180
1181 /*
1182  * On cores with Vector category, KVM is loaded only if CONFIG_ALTIVEC,
1183  * see kvmppc_core_check_processor_compat().
1184  */
1185 #ifdef CONFIG_ALTIVEC
1186         case BOOKE_INTERRUPT_ALTIVEC_UNAVAIL:
1187                 kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_ALTIVEC_UNAVAIL);
1188                 r = RESUME_GUEST;
1189                 break;
1190
1191         case BOOKE_INTERRUPT_ALTIVEC_ASSIST:
1192                 kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_ALTIVEC_ASSIST);
1193                 r = RESUME_GUEST;
1194                 break;
1195 #endif
1196
1197         case BOOKE_INTERRUPT_DATA_STORAGE:
1198                 kvmppc_core_queue_data_storage(vcpu, vcpu->arch.fault_dear,
1199                                                vcpu->arch.fault_esr);
1200                 kvmppc_account_exit(vcpu, DSI_EXITS);
1201                 r = RESUME_GUEST;
1202                 break;
1203
1204         case BOOKE_INTERRUPT_INST_STORAGE:
1205                 kvmppc_core_queue_inst_storage(vcpu, vcpu->arch.fault_esr);
1206                 kvmppc_account_exit(vcpu, ISI_EXITS);
1207                 r = RESUME_GUEST;
1208                 break;
1209
1210         case BOOKE_INTERRUPT_ALIGNMENT:
1211                 kvmppc_core_queue_alignment(vcpu, vcpu->arch.fault_dear,
1212                                             vcpu->arch.fault_esr);
1213                 r = RESUME_GUEST;
1214                 break;
1215
1216 #ifdef CONFIG_KVM_BOOKE_HV
1217         case BOOKE_INTERRUPT_HV_SYSCALL:
1218                 if (!(vcpu->arch.shared->msr & MSR_PR)) {
1219                         kvmppc_set_gpr(vcpu, 3, kvmppc_kvm_pv(vcpu));
1220                 } else {
1221                         /*
1222                          * hcall from guest userspace -- send privileged
1223                          * instruction program check.
1224                          */
1225                         kvmppc_core_queue_program(vcpu, ESR_PPR);
1226                 }
1227
1228                 r = RESUME_GUEST;
1229                 break;
1230 #else
1231         case BOOKE_INTERRUPT_SYSCALL:
1232                 if (!(vcpu->arch.shared->msr & MSR_PR) &&
1233                     (((u32)kvmppc_get_gpr(vcpu, 0)) == KVM_SC_MAGIC_R0)) {
1234                         /* KVM PV hypercalls */
1235                         kvmppc_set_gpr(vcpu, 3, kvmppc_kvm_pv(vcpu));
1236                         r = RESUME_GUEST;
1237                 } else {
1238                         /* Guest syscalls */
1239                         kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_SYSCALL);
1240                 }
1241                 kvmppc_account_exit(vcpu, SYSCALL_EXITS);
1242                 r = RESUME_GUEST;
1243                 break;
1244 #endif
1245
1246         case BOOKE_INTERRUPT_DTLB_MISS: {
1247                 unsigned long eaddr = vcpu->arch.fault_dear;
1248                 int gtlb_index;
1249                 gpa_t gpaddr;
1250                 gfn_t gfn;
1251
1252 #ifdef CONFIG_KVM_E500V2
1253                 if (!(vcpu->arch.shared->msr & MSR_PR) &&
1254                     (eaddr & PAGE_MASK) == vcpu->arch.magic_page_ea) {
1255                         kvmppc_map_magic(vcpu);
1256                         kvmppc_account_exit(vcpu, DTLB_VIRT_MISS_EXITS);
1257                         r = RESUME_GUEST;
1258
1259                         break;
1260                 }
1261 #endif
1262
1263                 /* Check the guest TLB. */
1264                 gtlb_index = kvmppc_mmu_dtlb_index(vcpu, eaddr);
1265                 if (gtlb_index < 0) {
1266                         /* The guest didn't have a mapping for it. */
1267                         kvmppc_core_queue_dtlb_miss(vcpu,
1268                                                     vcpu->arch.fault_dear,
1269                                                     vcpu->arch.fault_esr);
1270                         kvmppc_mmu_dtlb_miss(vcpu);
1271                         kvmppc_account_exit(vcpu, DTLB_REAL_MISS_EXITS);
1272                         r = RESUME_GUEST;
1273                         break;
1274                 }
1275
1276                 idx = srcu_read_lock(&vcpu->kvm->srcu);
1277
1278                 gpaddr = kvmppc_mmu_xlate(vcpu, gtlb_index, eaddr);
1279                 gfn = gpaddr >> PAGE_SHIFT;
1280
1281                 if (kvm_is_visible_gfn(vcpu->kvm, gfn)) {
1282                         /* The guest TLB had a mapping, but the shadow TLB
1283                          * didn't, and it is RAM. This could be because:
1284                          * a) the entry is mapping the host kernel, or
1285                          * b) the guest used a large mapping which we're faking
1286                          * Either way, we need to satisfy the fault without
1287                          * invoking the guest. */
1288                         kvmppc_mmu_map(vcpu, eaddr, gpaddr, gtlb_index);
1289                         kvmppc_account_exit(vcpu, DTLB_VIRT_MISS_EXITS);
1290                         r = RESUME_GUEST;
1291                 } else {
1292                         /* Guest has mapped and accessed a page which is not
1293                          * actually RAM. */
1294                         vcpu->arch.paddr_accessed = gpaddr;
1295                         vcpu->arch.vaddr_accessed = eaddr;
1296                         r = kvmppc_emulate_mmio(run, vcpu);
1297                         kvmppc_account_exit(vcpu, MMIO_EXITS);
1298                 }
1299
1300                 srcu_read_unlock(&vcpu->kvm->srcu, idx);
1301                 break;
1302         }
1303
1304         case BOOKE_INTERRUPT_ITLB_MISS: {
1305                 unsigned long eaddr = vcpu->arch.regs.nip;
1306                 gpa_t gpaddr;
1307                 gfn_t gfn;
1308                 int gtlb_index;
1309
1310                 r = RESUME_GUEST;
1311
1312                 /* Check the guest TLB. */
1313                 gtlb_index = kvmppc_mmu_itlb_index(vcpu, eaddr);
1314                 if (gtlb_index < 0) {
1315                         /* The guest didn't have a mapping for it. */
1316                         kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_ITLB_MISS);
1317                         kvmppc_mmu_itlb_miss(vcpu);
1318                         kvmppc_account_exit(vcpu, ITLB_REAL_MISS_EXITS);
1319                         break;
1320                 }
1321
1322                 kvmppc_account_exit(vcpu, ITLB_VIRT_MISS_EXITS);
1323
1324                 idx = srcu_read_lock(&vcpu->kvm->srcu);
1325
1326                 gpaddr = kvmppc_mmu_xlate(vcpu, gtlb_index, eaddr);
1327                 gfn = gpaddr >> PAGE_SHIFT;
1328
1329                 if (kvm_is_visible_gfn(vcpu->kvm, gfn)) {
1330                         /* The guest TLB had a mapping, but the shadow TLB
1331                          * didn't. This could be because:
1332                          * a) the entry is mapping the host kernel, or
1333                          * b) the guest used a large mapping which we're faking
1334                          * Either way, we need to satisfy the fault without
1335                          * invoking the guest. */
1336                         kvmppc_mmu_map(vcpu, eaddr, gpaddr, gtlb_index);
1337                 } else {
1338                         /* Guest mapped and leaped at non-RAM! */
1339                         kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_MACHINE_CHECK);
1340                 }
1341
1342                 srcu_read_unlock(&vcpu->kvm->srcu, idx);
1343                 break;
1344         }
1345
1346         case BOOKE_INTERRUPT_DEBUG: {
1347                 r = kvmppc_handle_debug(run, vcpu);
1348                 if (r == RESUME_HOST)
1349                         run->exit_reason = KVM_EXIT_DEBUG;
1350                 kvmppc_account_exit(vcpu, DEBUG_EXITS);
1351                 break;
1352         }
1353
1354         default:
1355                 printk(KERN_EMERG "exit_nr %d\n", exit_nr);
1356                 BUG();
1357         }
1358
1359 out:
1360         /*
1361          * To avoid clobbering exit_reason, only check for signals if we
1362          * aren't already exiting to userspace for some other reason.
1363          */
1364         if (!(r & RESUME_HOST)) {
1365                 s = kvmppc_prepare_to_enter(vcpu);
1366                 if (s <= 0)
1367                         r = (s << 2) | RESUME_HOST | (r & RESUME_FLAG_NV);
1368                 else {
1369                         /* interrupts now hard-disabled */
1370                         kvmppc_fix_ee_before_entry();
1371                         kvmppc_load_guest_fp(vcpu);
1372                         kvmppc_load_guest_altivec(vcpu);
1373                 }
1374         }
1375
1376         return r;
1377 }
1378
1379 static void kvmppc_set_tsr(struct kvm_vcpu *vcpu, u32 new_tsr)
1380 {
1381         u32 old_tsr = vcpu->arch.tsr;
1382
1383         vcpu->arch.tsr = new_tsr;
1384
1385         if ((old_tsr ^ vcpu->arch.tsr) & (TSR_ENW | TSR_WIS))
1386                 arm_next_watchdog(vcpu);
1387
1388         update_timer_ints(vcpu);
1389 }
1390
1391 /* Initial guest state: 16MB mapping 0 -> 0, PC = 0, MSR = 0, R1 = 16MB */
1392 int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu)
1393 {
1394         int i;
1395         int r;
1396
1397         vcpu->arch.regs.nip = 0;
1398         vcpu->arch.shared->pir = vcpu->vcpu_id;
1399         kvmppc_set_gpr(vcpu, 1, (16<<20) - 8); /* -8 for the callee-save LR slot */
1400         kvmppc_set_msr(vcpu, 0);
1401
1402 #ifndef CONFIG_KVM_BOOKE_HV
1403         vcpu->arch.shadow_msr = MSR_USER | MSR_IS | MSR_DS;
1404         vcpu->arch.shadow_pid = 1;
1405         vcpu->arch.shared->msr = 0;
1406 #endif
1407
1408         /* Eye-catching numbers so we know if the guest takes an interrupt
1409          * before it's programmed its own IVPR/IVORs. */
1410         vcpu->arch.ivpr = 0x55550000;
1411         for (i = 0; i < BOOKE_IRQPRIO_MAX; i++)
1412                 vcpu->arch.ivor[i] = 0x7700 | i * 4;
1413
1414         kvmppc_init_timing_stats(vcpu);
1415
1416         r = kvmppc_core_vcpu_setup(vcpu);
1417         kvmppc_sanity_check(vcpu);
1418         return r;
1419 }
1420
1421 int kvmppc_subarch_vcpu_init(struct kvm_vcpu *vcpu)
1422 {
1423         /* setup watchdog timer once */
1424         spin_lock_init(&vcpu->arch.wdt_lock);
1425         timer_setup(&vcpu->arch.wdt_timer, kvmppc_watchdog_func, 0);
1426
1427         /*
1428          * Clear DBSR.MRR to avoid guest debug interrupt as
1429          * this is of host interest
1430          */
1431         mtspr(SPRN_DBSR, DBSR_MRR);
1432         return 0;
1433 }
1434
1435 void kvmppc_subarch_vcpu_uninit(struct kvm_vcpu *vcpu)
1436 {
1437         del_timer_sync(&vcpu->arch.wdt_timer);
1438 }
1439
1440 int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
1441 {
1442         int i;
1443
1444         vcpu_load(vcpu);
1445
1446         regs->pc = vcpu->arch.regs.nip;
1447         regs->cr = kvmppc_get_cr(vcpu);
1448         regs->ctr = vcpu->arch.regs.ctr;
1449         regs->lr = vcpu->arch.regs.link;
1450         regs->xer = kvmppc_get_xer(vcpu);
1451         regs->msr = vcpu->arch.shared->msr;
1452         regs->srr0 = kvmppc_get_srr0(vcpu);
1453         regs->srr1 = kvmppc_get_srr1(vcpu);
1454         regs->pid = vcpu->arch.pid;
1455         regs->sprg0 = kvmppc_get_sprg0(vcpu);
1456         regs->sprg1 = kvmppc_get_sprg1(vcpu);
1457         regs->sprg2 = kvmppc_get_sprg2(vcpu);
1458         regs->sprg3 = kvmppc_get_sprg3(vcpu);
1459         regs->sprg4 = kvmppc_get_sprg4(vcpu);
1460         regs->sprg5 = kvmppc_get_sprg5(vcpu);
1461         regs->sprg6 = kvmppc_get_sprg6(vcpu);
1462         regs->sprg7 = kvmppc_get_sprg7(vcpu);
1463
1464         for (i = 0; i < ARRAY_SIZE(regs->gpr); i++)
1465                 regs->gpr[i] = kvmppc_get_gpr(vcpu, i);
1466
1467         vcpu_put(vcpu);
1468         return 0;
1469 }
1470
1471 int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
1472 {
1473         int i;
1474
1475         vcpu_load(vcpu);
1476
1477         vcpu->arch.regs.nip = regs->pc;
1478         kvmppc_set_cr(vcpu, regs->cr);
1479         vcpu->arch.regs.ctr = regs->ctr;
1480         vcpu->arch.regs.link = regs->lr;
1481         kvmppc_set_xer(vcpu, regs->xer);
1482         kvmppc_set_msr(vcpu, regs->msr);
1483         kvmppc_set_srr0(vcpu, regs->srr0);
1484         kvmppc_set_srr1(vcpu, regs->srr1);
1485         kvmppc_set_pid(vcpu, regs->pid);
1486         kvmppc_set_sprg0(vcpu, regs->sprg0);
1487         kvmppc_set_sprg1(vcpu, regs->sprg1);
1488         kvmppc_set_sprg2(vcpu, regs->sprg2);
1489         kvmppc_set_sprg3(vcpu, regs->sprg3);
1490         kvmppc_set_sprg4(vcpu, regs->sprg4);
1491         kvmppc_set_sprg5(vcpu, regs->sprg5);
1492         kvmppc_set_sprg6(vcpu, regs->sprg6);
1493         kvmppc_set_sprg7(vcpu, regs->sprg7);
1494
1495         for (i = 0; i < ARRAY_SIZE(regs->gpr); i++)
1496                 kvmppc_set_gpr(vcpu, i, regs->gpr[i]);
1497
1498         vcpu_put(vcpu);
1499         return 0;
1500 }
1501
1502 static void get_sregs_base(struct kvm_vcpu *vcpu,
1503                            struct kvm_sregs *sregs)
1504 {
1505         u64 tb = get_tb();
1506
1507         sregs->u.e.features |= KVM_SREGS_E_BASE;
1508
1509         sregs->u.e.csrr0 = vcpu->arch.csrr0;
1510         sregs->u.e.csrr1 = vcpu->arch.csrr1;
1511         sregs->u.e.mcsr = vcpu->arch.mcsr;
1512         sregs->u.e.esr = kvmppc_get_esr(vcpu);
1513         sregs->u.e.dear = kvmppc_get_dar(vcpu);
1514         sregs->u.e.tsr = vcpu->arch.tsr;
1515         sregs->u.e.tcr = vcpu->arch.tcr;
1516         sregs->u.e.dec = kvmppc_get_dec(vcpu, tb);
1517         sregs->u.e.tb = tb;
1518         sregs->u.e.vrsave = vcpu->arch.vrsave;
1519 }
1520
1521 static int set_sregs_base(struct kvm_vcpu *vcpu,
1522                           struct kvm_sregs *sregs)
1523 {
1524         if (!(sregs->u.e.features & KVM_SREGS_E_BASE))
1525                 return 0;
1526
1527         vcpu->arch.csrr0 = sregs->u.e.csrr0;
1528         vcpu->arch.csrr1 = sregs->u.e.csrr1;
1529         vcpu->arch.mcsr = sregs->u.e.mcsr;
1530         kvmppc_set_esr(vcpu, sregs->u.e.esr);
1531         kvmppc_set_dar(vcpu, sregs->u.e.dear);
1532         vcpu->arch.vrsave = sregs->u.e.vrsave;
1533         kvmppc_set_tcr(vcpu, sregs->u.e.tcr);
1534
1535         if (sregs->u.e.update_special & KVM_SREGS_E_UPDATE_DEC) {
1536                 vcpu->arch.dec = sregs->u.e.dec;
1537                 kvmppc_emulate_dec(vcpu);
1538         }
1539
1540         if (sregs->u.e.update_special & KVM_SREGS_E_UPDATE_TSR)
1541                 kvmppc_set_tsr(vcpu, sregs->u.e.tsr);
1542
1543         return 0;
1544 }
1545
1546 static void get_sregs_arch206(struct kvm_vcpu *vcpu,
1547                               struct kvm_sregs *sregs)
1548 {
1549         sregs->u.e.features |= KVM_SREGS_E_ARCH206;
1550
1551         sregs->u.e.pir = vcpu->vcpu_id;
1552         sregs->u.e.mcsrr0 = vcpu->arch.mcsrr0;
1553         sregs->u.e.mcsrr1 = vcpu->arch.mcsrr1;
1554         sregs->u.e.decar = vcpu->arch.decar;
1555         sregs->u.e.ivpr = vcpu->arch.ivpr;
1556 }
1557
1558 static int set_sregs_arch206(struct kvm_vcpu *vcpu,
1559                              struct kvm_sregs *sregs)
1560 {
1561         if (!(sregs->u.e.features & KVM_SREGS_E_ARCH206))
1562                 return 0;
1563
1564         if (sregs->u.e.pir != vcpu->vcpu_id)
1565                 return -EINVAL;
1566
1567         vcpu->arch.mcsrr0 = sregs->u.e.mcsrr0;
1568         vcpu->arch.mcsrr1 = sregs->u.e.mcsrr1;
1569         vcpu->arch.decar = sregs->u.e.decar;
1570         vcpu->arch.ivpr = sregs->u.e.ivpr;
1571
1572         return 0;
1573 }
1574
1575 int kvmppc_get_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs)
1576 {
1577         sregs->u.e.features |= KVM_SREGS_E_IVOR;
1578
1579         sregs->u.e.ivor_low[0] = vcpu->arch.ivor[BOOKE_IRQPRIO_CRITICAL];
1580         sregs->u.e.ivor_low[1] = vcpu->arch.ivor[BOOKE_IRQPRIO_MACHINE_CHECK];
1581         sregs->u.e.ivor_low[2] = vcpu->arch.ivor[BOOKE_IRQPRIO_DATA_STORAGE];
1582         sregs->u.e.ivor_low[3] = vcpu->arch.ivor[BOOKE_IRQPRIO_INST_STORAGE];
1583         sregs->u.e.ivor_low[4] = vcpu->arch.ivor[BOOKE_IRQPRIO_EXTERNAL];
1584         sregs->u.e.ivor_low[5] = vcpu->arch.ivor[BOOKE_IRQPRIO_ALIGNMENT];
1585         sregs->u.e.ivor_low[6] = vcpu->arch.ivor[BOOKE_IRQPRIO_PROGRAM];
1586         sregs->u.e.ivor_low[7] = vcpu->arch.ivor[BOOKE_IRQPRIO_FP_UNAVAIL];
1587         sregs->u.e.ivor_low[8] = vcpu->arch.ivor[BOOKE_IRQPRIO_SYSCALL];
1588         sregs->u.e.ivor_low[9] = vcpu->arch.ivor[BOOKE_IRQPRIO_AP_UNAVAIL];
1589         sregs->u.e.ivor_low[10] = vcpu->arch.ivor[BOOKE_IRQPRIO_DECREMENTER];
1590         sregs->u.e.ivor_low[11] = vcpu->arch.ivor[BOOKE_IRQPRIO_FIT];
1591         sregs->u.e.ivor_low[12] = vcpu->arch.ivor[BOOKE_IRQPRIO_WATCHDOG];
1592         sregs->u.e.ivor_low[13] = vcpu->arch.ivor[BOOKE_IRQPRIO_DTLB_MISS];
1593         sregs->u.e.ivor_low[14] = vcpu->arch.ivor[BOOKE_IRQPRIO_ITLB_MISS];
1594         sregs->u.e.ivor_low[15] = vcpu->arch.ivor[BOOKE_IRQPRIO_DEBUG];
1595         return 0;
1596 }
1597
1598 int kvmppc_set_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs)
1599 {
1600         if (!(sregs->u.e.features & KVM_SREGS_E_IVOR))
1601                 return 0;
1602
1603         vcpu->arch.ivor[BOOKE_IRQPRIO_CRITICAL] = sregs->u.e.ivor_low[0];
1604         vcpu->arch.ivor[BOOKE_IRQPRIO_MACHINE_CHECK] = sregs->u.e.ivor_low[1];
1605         vcpu->arch.ivor[BOOKE_IRQPRIO_DATA_STORAGE] = sregs->u.e.ivor_low[2];
1606         vcpu->arch.ivor[BOOKE_IRQPRIO_INST_STORAGE] = sregs->u.e.ivor_low[3];
1607         vcpu->arch.ivor[BOOKE_IRQPRIO_EXTERNAL] = sregs->u.e.ivor_low[4];
1608         vcpu->arch.ivor[BOOKE_IRQPRIO_ALIGNMENT] = sregs->u.e.ivor_low[5];
1609         vcpu->arch.ivor[BOOKE_IRQPRIO_PROGRAM] = sregs->u.e.ivor_low[6];
1610         vcpu->arch.ivor[BOOKE_IRQPRIO_FP_UNAVAIL] = sregs->u.e.ivor_low[7];
1611         vcpu->arch.ivor[BOOKE_IRQPRIO_SYSCALL] = sregs->u.e.ivor_low[8];
1612         vcpu->arch.ivor[BOOKE_IRQPRIO_AP_UNAVAIL] = sregs->u.e.ivor_low[9];
1613         vcpu->arch.ivor[BOOKE_IRQPRIO_DECREMENTER] = sregs->u.e.ivor_low[10];
1614         vcpu->arch.ivor[BOOKE_IRQPRIO_FIT] = sregs->u.e.ivor_low[11];
1615         vcpu->arch.ivor[BOOKE_IRQPRIO_WATCHDOG] = sregs->u.e.ivor_low[12];
1616         vcpu->arch.ivor[BOOKE_IRQPRIO_DTLB_MISS] = sregs->u.e.ivor_low[13];
1617         vcpu->arch.ivor[BOOKE_IRQPRIO_ITLB_MISS] = sregs->u.e.ivor_low[14];
1618         vcpu->arch.ivor[BOOKE_IRQPRIO_DEBUG] = sregs->u.e.ivor_low[15];
1619
1620         return 0;
1621 }
1622
1623 int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
1624                                   struct kvm_sregs *sregs)
1625 {
1626         int ret;
1627
1628         vcpu_load(vcpu);
1629
1630         sregs->pvr = vcpu->arch.pvr;
1631
1632         get_sregs_base(vcpu, sregs);
1633         get_sregs_arch206(vcpu, sregs);
1634         ret = vcpu->kvm->arch.kvm_ops->get_sregs(vcpu, sregs);
1635
1636         vcpu_put(vcpu);
1637         return ret;
1638 }
1639
1640 int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
1641                                   struct kvm_sregs *sregs)
1642 {
1643         int ret = -EINVAL;
1644
1645         vcpu_load(vcpu);
1646         if (vcpu->arch.pvr != sregs->pvr)
1647                 goto out;
1648
1649         ret = set_sregs_base(vcpu, sregs);
1650         if (ret < 0)
1651                 goto out;
1652
1653         ret = set_sregs_arch206(vcpu, sregs);
1654         if (ret < 0)
1655                 goto out;
1656
1657         ret = vcpu->kvm->arch.kvm_ops->set_sregs(vcpu, sregs);
1658
1659 out:
1660         vcpu_put(vcpu);
1661         return ret;
1662 }
1663
1664 int kvmppc_get_one_reg(struct kvm_vcpu *vcpu, u64 id,
1665                         union kvmppc_one_reg *val)
1666 {
1667         int r = 0;
1668
1669         switch (id) {
1670         case KVM_REG_PPC_IAC1:
1671                 *val = get_reg_val(id, vcpu->arch.dbg_reg.iac1);
1672                 break;
1673         case KVM_REG_PPC_IAC2:
1674                 *val = get_reg_val(id, vcpu->arch.dbg_reg.iac2);
1675                 break;
1676 #if CONFIG_PPC_ADV_DEBUG_IACS > 2
1677         case KVM_REG_PPC_IAC3:
1678                 *val = get_reg_val(id, vcpu->arch.dbg_reg.iac3);
1679                 break;
1680         case KVM_REG_PPC_IAC4:
1681                 *val = get_reg_val(id, vcpu->arch.dbg_reg.iac4);
1682                 break;
1683 #endif
1684         case KVM_REG_PPC_DAC1:
1685                 *val = get_reg_val(id, vcpu->arch.dbg_reg.dac1);
1686                 break;
1687         case KVM_REG_PPC_DAC2:
1688                 *val = get_reg_val(id, vcpu->arch.dbg_reg.dac2);
1689                 break;
1690         case KVM_REG_PPC_EPR: {
1691                 u32 epr = kvmppc_get_epr(vcpu);
1692                 *val = get_reg_val(id, epr);
1693                 break;
1694         }
1695 #if defined(CONFIG_64BIT)
1696         case KVM_REG_PPC_EPCR:
1697                 *val = get_reg_val(id, vcpu->arch.epcr);
1698                 break;
1699 #endif
1700         case KVM_REG_PPC_TCR:
1701                 *val = get_reg_val(id, vcpu->arch.tcr);
1702                 break;
1703         case KVM_REG_PPC_TSR:
1704                 *val = get_reg_val(id, vcpu->arch.tsr);
1705                 break;
1706         case KVM_REG_PPC_DEBUG_INST:
1707                 *val = get_reg_val(id, KVMPPC_INST_SW_BREAKPOINT);
1708                 break;
1709         case KVM_REG_PPC_VRSAVE:
1710                 *val = get_reg_val(id, vcpu->arch.vrsave);
1711                 break;
1712         default:
1713                 r = vcpu->kvm->arch.kvm_ops->get_one_reg(vcpu, id, val);
1714                 break;
1715         }
1716
1717         return r;
1718 }
1719
1720 int kvmppc_set_one_reg(struct kvm_vcpu *vcpu, u64 id,
1721                         union kvmppc_one_reg *val)
1722 {
1723         int r = 0;
1724
1725         switch (id) {
1726         case KVM_REG_PPC_IAC1:
1727                 vcpu->arch.dbg_reg.iac1 = set_reg_val(id, *val);
1728                 break;
1729         case KVM_REG_PPC_IAC2:
1730                 vcpu->arch.dbg_reg.iac2 = set_reg_val(id, *val);
1731                 break;
1732 #if CONFIG_PPC_ADV_DEBUG_IACS > 2
1733         case KVM_REG_PPC_IAC3:
1734                 vcpu->arch.dbg_reg.iac3 = set_reg_val(id, *val);
1735                 break;
1736         case KVM_REG_PPC_IAC4:
1737                 vcpu->arch.dbg_reg.iac4 = set_reg_val(id, *val);
1738                 break;
1739 #endif
1740         case KVM_REG_PPC_DAC1:
1741                 vcpu->arch.dbg_reg.dac1 = set_reg_val(id, *val);
1742                 break;
1743         case KVM_REG_PPC_DAC2:
1744                 vcpu->arch.dbg_reg.dac2 = set_reg_val(id, *val);
1745                 break;
1746         case KVM_REG_PPC_EPR: {
1747                 u32 new_epr = set_reg_val(id, *val);
1748                 kvmppc_set_epr(vcpu, new_epr);
1749                 break;
1750         }
1751 #if defined(CONFIG_64BIT)
1752         case KVM_REG_PPC_EPCR: {
1753                 u32 new_epcr = set_reg_val(id, *val);
1754                 kvmppc_set_epcr(vcpu, new_epcr);
1755                 break;
1756         }
1757 #endif
1758         case KVM_REG_PPC_OR_TSR: {
1759                 u32 tsr_bits = set_reg_val(id, *val);
1760                 kvmppc_set_tsr_bits(vcpu, tsr_bits);
1761                 break;
1762         }
1763         case KVM_REG_PPC_CLEAR_TSR: {
1764                 u32 tsr_bits = set_reg_val(id, *val);
1765                 kvmppc_clr_tsr_bits(vcpu, tsr_bits);
1766                 break;
1767         }
1768         case KVM_REG_PPC_TSR: {
1769                 u32 tsr = set_reg_val(id, *val);
1770                 kvmppc_set_tsr(vcpu, tsr);
1771                 break;
1772         }
1773         case KVM_REG_PPC_TCR: {
1774                 u32 tcr = set_reg_val(id, *val);
1775                 kvmppc_set_tcr(vcpu, tcr);
1776                 break;
1777         }
1778         case KVM_REG_PPC_VRSAVE:
1779                 vcpu->arch.vrsave = set_reg_val(id, *val);
1780                 break;
1781         default:
1782                 r = vcpu->kvm->arch.kvm_ops->set_one_reg(vcpu, id, val);
1783                 break;
1784         }
1785
1786         return r;
1787 }
1788
1789 int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
1790 {
1791         return -ENOTSUPP;
1792 }
1793
1794 int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
1795 {
1796         return -ENOTSUPP;
1797 }
1798
1799 int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
1800                                   struct kvm_translation *tr)
1801 {
1802         int r;
1803
1804         vcpu_load(vcpu);
1805         r = kvmppc_core_vcpu_translate(vcpu, tr);
1806         vcpu_put(vcpu);
1807         return r;
1808 }
1809
1810 int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, struct kvm_dirty_log *log)
1811 {
1812         return -ENOTSUPP;
1813 }
1814
1815 void kvmppc_core_free_memslot(struct kvm *kvm, struct kvm_memory_slot *free,
1816                               struct kvm_memory_slot *dont)
1817 {
1818 }
1819
1820 int kvmppc_core_create_memslot(struct kvm *kvm, struct kvm_memory_slot *slot,
1821                                unsigned long npages)
1822 {
1823         return 0;
1824 }
1825
1826 int kvmppc_core_prepare_memory_region(struct kvm *kvm,
1827                                       struct kvm_memory_slot *memslot,
1828                                       const struct kvm_userspace_memory_region *mem)
1829 {
1830         return 0;
1831 }
1832
1833 void kvmppc_core_commit_memory_region(struct kvm *kvm,
1834                                 const struct kvm_userspace_memory_region *mem,
1835                                 const struct kvm_memory_slot *old,
1836                                 const struct kvm_memory_slot *new)
1837 {
1838 }
1839
1840 void kvmppc_core_flush_memslot(struct kvm *kvm, struct kvm_memory_slot *memslot)
1841 {
1842 }
1843
1844 void kvmppc_set_epcr(struct kvm_vcpu *vcpu, u32 new_epcr)
1845 {
1846 #if defined(CONFIG_64BIT)
1847         vcpu->arch.epcr = new_epcr;
1848 #ifdef CONFIG_KVM_BOOKE_HV
1849         vcpu->arch.shadow_epcr &= ~SPRN_EPCR_GICM;
1850         if (vcpu->arch.epcr  & SPRN_EPCR_ICM)
1851                 vcpu->arch.shadow_epcr |= SPRN_EPCR_GICM;
1852 #endif
1853 #endif
1854 }
1855
1856 void kvmppc_set_tcr(struct kvm_vcpu *vcpu, u32 new_tcr)
1857 {
1858         vcpu->arch.tcr = new_tcr;
1859         arm_next_watchdog(vcpu);
1860         update_timer_ints(vcpu);
1861 }
1862
1863 void kvmppc_set_tsr_bits(struct kvm_vcpu *vcpu, u32 tsr_bits)
1864 {
1865         set_bits(tsr_bits, &vcpu->arch.tsr);
1866         smp_wmb();
1867         kvm_make_request(KVM_REQ_PENDING_TIMER, vcpu);
1868         kvm_vcpu_kick(vcpu);
1869 }
1870
1871 void kvmppc_clr_tsr_bits(struct kvm_vcpu *vcpu, u32 tsr_bits)
1872 {
1873         clear_bits(tsr_bits, &vcpu->arch.tsr);
1874
1875         /*
1876          * We may have stopped the watchdog due to
1877          * being stuck on final expiration.
1878          */
1879         if (tsr_bits & (TSR_ENW | TSR_WIS))
1880                 arm_next_watchdog(vcpu);
1881
1882         update_timer_ints(vcpu);
1883 }
1884
1885 void kvmppc_decrementer_func(struct kvm_vcpu *vcpu)
1886 {
1887         if (vcpu->arch.tcr & TCR_ARE) {
1888                 vcpu->arch.dec = vcpu->arch.decar;
1889                 kvmppc_emulate_dec(vcpu);
1890         }
1891
1892         kvmppc_set_tsr_bits(vcpu, TSR_DIS);
1893 }
1894
1895 static int kvmppc_booke_add_breakpoint(struct debug_reg *dbg_reg,
1896                                        uint64_t addr, int index)
1897 {
1898         switch (index) {
1899         case 0:
1900                 dbg_reg->dbcr0 |= DBCR0_IAC1;
1901                 dbg_reg->iac1 = addr;
1902                 break;
1903         case 1:
1904                 dbg_reg->dbcr0 |= DBCR0_IAC2;
1905                 dbg_reg->iac2 = addr;
1906                 break;
1907 #if CONFIG_PPC_ADV_DEBUG_IACS > 2
1908         case 2:
1909                 dbg_reg->dbcr0 |= DBCR0_IAC3;
1910                 dbg_reg->iac3 = addr;
1911                 break;
1912         case 3:
1913                 dbg_reg->dbcr0 |= DBCR0_IAC4;
1914                 dbg_reg->iac4 = addr;
1915                 break;
1916 #endif
1917         default:
1918                 return -EINVAL;
1919         }
1920
1921         dbg_reg->dbcr0 |= DBCR0_IDM;
1922         return 0;
1923 }
1924
1925 static int kvmppc_booke_add_watchpoint(struct debug_reg *dbg_reg, uint64_t addr,
1926                                        int type, int index)
1927 {
1928         switch (index) {
1929         case 0:
1930                 if (type & KVMPPC_DEBUG_WATCH_READ)
1931                         dbg_reg->dbcr0 |= DBCR0_DAC1R;
1932                 if (type & KVMPPC_DEBUG_WATCH_WRITE)
1933                         dbg_reg->dbcr0 |= DBCR0_DAC1W;
1934                 dbg_reg->dac1 = addr;
1935                 break;
1936         case 1:
1937                 if (type & KVMPPC_DEBUG_WATCH_READ)
1938                         dbg_reg->dbcr0 |= DBCR0_DAC2R;
1939                 if (type & KVMPPC_DEBUG_WATCH_WRITE)
1940                         dbg_reg->dbcr0 |= DBCR0_DAC2W;
1941                 dbg_reg->dac2 = addr;
1942                 break;
1943         default:
1944                 return -EINVAL;
1945         }
1946
1947         dbg_reg->dbcr0 |= DBCR0_IDM;
1948         return 0;
1949 }
1950 void kvm_guest_protect_msr(struct kvm_vcpu *vcpu, ulong prot_bitmap, bool set)
1951 {
1952         /* XXX: Add similar MSR protection for BookE-PR */
1953 #ifdef CONFIG_KVM_BOOKE_HV
1954         BUG_ON(prot_bitmap & ~(MSRP_UCLEP | MSRP_DEP | MSRP_PMMP));
1955         if (set) {
1956                 if (prot_bitmap & MSR_UCLE)
1957                         vcpu->arch.shadow_msrp |= MSRP_UCLEP;
1958                 if (prot_bitmap & MSR_DE)
1959                         vcpu->arch.shadow_msrp |= MSRP_DEP;
1960                 if (prot_bitmap & MSR_PMM)
1961                         vcpu->arch.shadow_msrp |= MSRP_PMMP;
1962         } else {
1963                 if (prot_bitmap & MSR_UCLE)
1964                         vcpu->arch.shadow_msrp &= ~MSRP_UCLEP;
1965                 if (prot_bitmap & MSR_DE)
1966                         vcpu->arch.shadow_msrp &= ~MSRP_DEP;
1967                 if (prot_bitmap & MSR_PMM)
1968                         vcpu->arch.shadow_msrp &= ~MSRP_PMMP;
1969         }
1970 #endif
1971 }
1972
1973 int kvmppc_xlate(struct kvm_vcpu *vcpu, ulong eaddr, enum xlate_instdata xlid,
1974                  enum xlate_readwrite xlrw, struct kvmppc_pte *pte)
1975 {
1976         int gtlb_index;
1977         gpa_t gpaddr;
1978
1979 #ifdef CONFIG_KVM_E500V2
1980         if (!(vcpu->arch.shared->msr & MSR_PR) &&
1981             (eaddr & PAGE_MASK) == vcpu->arch.magic_page_ea) {
1982                 pte->eaddr = eaddr;
1983                 pte->raddr = (vcpu->arch.magic_page_pa & PAGE_MASK) |
1984                              (eaddr & ~PAGE_MASK);
1985                 pte->vpage = eaddr >> PAGE_SHIFT;
1986                 pte->may_read = true;
1987                 pte->may_write = true;
1988                 pte->may_execute = true;
1989
1990                 return 0;
1991         }
1992 #endif
1993
1994         /* Check the guest TLB. */
1995         switch (xlid) {
1996         case XLATE_INST:
1997                 gtlb_index = kvmppc_mmu_itlb_index(vcpu, eaddr);
1998                 break;
1999         case XLATE_DATA:
2000                 gtlb_index = kvmppc_mmu_dtlb_index(vcpu, eaddr);
2001                 break;
2002         default:
2003                 BUG();
2004         }
2005
2006         /* Do we have a TLB entry at all? */
2007         if (gtlb_index < 0)
2008                 return -ENOENT;
2009
2010         gpaddr = kvmppc_mmu_xlate(vcpu, gtlb_index, eaddr);
2011
2012         pte->eaddr = eaddr;
2013         pte->raddr = (gpaddr & PAGE_MASK) | (eaddr & ~PAGE_MASK);
2014         pte->vpage = eaddr >> PAGE_SHIFT;
2015
2016         /* XXX read permissions from the guest TLB */
2017         pte->may_read = true;
2018         pte->may_write = true;
2019         pte->may_execute = true;
2020
2021         return 0;
2022 }
2023
2024 int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
2025                                          struct kvm_guest_debug *dbg)
2026 {
2027         struct debug_reg *dbg_reg;
2028         int n, b = 0, w = 0;
2029         int ret = 0;
2030
2031         vcpu_load(vcpu);
2032
2033         if (!(dbg->control & KVM_GUESTDBG_ENABLE)) {
2034                 vcpu->arch.dbg_reg.dbcr0 = 0;
2035                 vcpu->guest_debug = 0;
2036                 kvm_guest_protect_msr(vcpu, MSR_DE, false);
2037                 goto out;
2038         }
2039
2040         kvm_guest_protect_msr(vcpu, MSR_DE, true);
2041         vcpu->guest_debug = dbg->control;
2042         vcpu->arch.dbg_reg.dbcr0 = 0;
2043
2044         if (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP)
2045                 vcpu->arch.dbg_reg.dbcr0 |= DBCR0_IDM | DBCR0_IC;
2046
2047         /* Code below handles only HW breakpoints */
2048         dbg_reg = &(vcpu->arch.dbg_reg);
2049
2050 #ifdef CONFIG_KVM_BOOKE_HV
2051         /*
2052          * On BookE-HV (e500mc) the guest is always executed with MSR.GS=1
2053          * DBCR1 and DBCR2 are set to trigger debug events when MSR.PR is 0
2054          */
2055         dbg_reg->dbcr1 = 0;
2056         dbg_reg->dbcr2 = 0;
2057 #else
2058         /*
2059          * On BookE-PR (e500v2) the guest is always executed with MSR.PR=1
2060          * We set DBCR1 and DBCR2 to only trigger debug events when MSR.PR
2061          * is set.
2062          */
2063         dbg_reg->dbcr1 = DBCR1_IAC1US | DBCR1_IAC2US | DBCR1_IAC3US |
2064                           DBCR1_IAC4US;
2065         dbg_reg->dbcr2 = DBCR2_DAC1US | DBCR2_DAC2US;
2066 #endif
2067
2068         if (!(vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP))
2069                 goto out;
2070
2071         ret = -EINVAL;
2072         for (n = 0; n < (KVMPPC_BOOKE_IAC_NUM + KVMPPC_BOOKE_DAC_NUM); n++) {
2073                 uint64_t addr = dbg->arch.bp[n].addr;
2074                 uint32_t type = dbg->arch.bp[n].type;
2075
2076                 if (type == KVMPPC_DEBUG_NONE)
2077                         continue;
2078
2079                 if (type & ~(KVMPPC_DEBUG_WATCH_READ |
2080                              KVMPPC_DEBUG_WATCH_WRITE |
2081                              KVMPPC_DEBUG_BREAKPOINT))
2082                         goto out;
2083
2084                 if (type & KVMPPC_DEBUG_BREAKPOINT) {
2085                         /* Setting H/W breakpoint */
2086                         if (kvmppc_booke_add_breakpoint(dbg_reg, addr, b++))
2087                                 goto out;
2088                 } else {
2089                         /* Setting H/W watchpoint */
2090                         if (kvmppc_booke_add_watchpoint(dbg_reg, addr,
2091                                                         type, w++))
2092                                 goto out;
2093                 }
2094         }
2095
2096         ret = 0;
2097 out:
2098         vcpu_put(vcpu);
2099         return ret;
2100 }
2101
2102 void kvmppc_booke_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
2103 {
2104         vcpu->cpu = smp_processor_id();
2105         current->thread.kvm_vcpu = vcpu;
2106 }
2107
2108 void kvmppc_booke_vcpu_put(struct kvm_vcpu *vcpu)
2109 {
2110         current->thread.kvm_vcpu = NULL;
2111         vcpu->cpu = -1;
2112
2113         /* Clear pending debug event in DBSR */
2114         kvmppc_clear_dbsr();
2115 }
2116
2117 void kvmppc_mmu_destroy(struct kvm_vcpu *vcpu)
2118 {
2119         vcpu->kvm->arch.kvm_ops->mmu_destroy(vcpu);
2120 }
2121
2122 int kvmppc_core_init_vm(struct kvm *kvm)
2123 {
2124         return kvm->arch.kvm_ops->init_vm(kvm);
2125 }
2126
2127 struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm, unsigned int id)
2128 {
2129         return kvm->arch.kvm_ops->vcpu_create(kvm, id);
2130 }
2131
2132 void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu)
2133 {
2134         vcpu->kvm->arch.kvm_ops->vcpu_free(vcpu);
2135 }
2136
2137 void kvmppc_core_destroy_vm(struct kvm *kvm)
2138 {
2139         kvm->arch.kvm_ops->destroy_vm(kvm);
2140 }
2141
2142 void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
2143 {
2144         vcpu->kvm->arch.kvm_ops->vcpu_load(vcpu, cpu);
2145 }
2146
2147 void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu)
2148 {
2149         vcpu->kvm->arch.kvm_ops->vcpu_put(vcpu);
2150 }
2151
2152 int __init kvmppc_booke_init(void)
2153 {
2154 #ifndef CONFIG_KVM_BOOKE_HV
2155         unsigned long ivor[16];
2156         unsigned long *handler = kvmppc_booke_handler_addr;
2157         unsigned long max_ivor = 0;
2158         unsigned long handler_len;
2159         int i;
2160
2161         /* We install our own exception handlers by hijacking IVPR. IVPR must
2162          * be 16-bit aligned, so we need a 64KB allocation. */
2163         kvmppc_booke_handlers = __get_free_pages(GFP_KERNEL | __GFP_ZERO,
2164                                                  VCPU_SIZE_ORDER);
2165         if (!kvmppc_booke_handlers)
2166                 return -ENOMEM;
2167
2168         /* XXX make sure our handlers are smaller than Linux's */
2169
2170         /* Copy our interrupt handlers to match host IVORs. That way we don't
2171          * have to swap the IVORs on every guest/host transition. */
2172         ivor[0] = mfspr(SPRN_IVOR0);
2173         ivor[1] = mfspr(SPRN_IVOR1);
2174         ivor[2] = mfspr(SPRN_IVOR2);
2175         ivor[3] = mfspr(SPRN_IVOR3);
2176         ivor[4] = mfspr(SPRN_IVOR4);
2177         ivor[5] = mfspr(SPRN_IVOR5);
2178         ivor[6] = mfspr(SPRN_IVOR6);
2179         ivor[7] = mfspr(SPRN_IVOR7);
2180         ivor[8] = mfspr(SPRN_IVOR8);
2181         ivor[9] = mfspr(SPRN_IVOR9);
2182         ivor[10] = mfspr(SPRN_IVOR10);
2183         ivor[11] = mfspr(SPRN_IVOR11);
2184         ivor[12] = mfspr(SPRN_IVOR12);
2185         ivor[13] = mfspr(SPRN_IVOR13);
2186         ivor[14] = mfspr(SPRN_IVOR14);
2187         ivor[15] = mfspr(SPRN_IVOR15);
2188
2189         for (i = 0; i < 16; i++) {
2190                 if (ivor[i] > max_ivor)
2191                         max_ivor = i;
2192
2193                 handler_len = handler[i + 1] - handler[i];
2194                 memcpy((void *)kvmppc_booke_handlers + ivor[i],
2195                        (void *)handler[i], handler_len);
2196         }
2197
2198         handler_len = handler[max_ivor + 1] - handler[max_ivor];
2199         flush_icache_range(kvmppc_booke_handlers, kvmppc_booke_handlers +
2200                            ivor[max_ivor] + handler_len);
2201 #endif /* !BOOKE_HV */
2202         return 0;
2203 }
2204
2205 void __exit kvmppc_booke_exit(void)
2206 {
2207         free_pages(kvmppc_booke_handlers, VCPU_SIZE_ORDER);
2208         kvm_exit();
2209 }