target-s390x/kvm.c

   1 /*
   2  * QEMU S390x KVM implementation
   3  *
   4  * Copyright (c) 2009 Alexander Graf <agraf@suse.de>
   5  * Copyright IBM Corp. 2012
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * Contributions after 2012-10-29 are licensed under the terms of the
  18  * GNU GPL, version 2 or (at your option) any later version.
  19  *
  20  * You should have received a copy of the GNU (Lesser) General Public
  21  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  22  */
  23
  24 #include <sys/types.h>
  25 #include <sys/ioctl.h>
  26 #include <sys/mman.h>
  27
  28 #include <linux/kvm.h>
  29 #include <asm/ptrace.h>
  30
  31 #include "qemu-common.h"
  32 #include "qemu/timer.h"
  33 #include "sysemu/sysemu.h"
  34 #include "sysemu/kvm.h"
  35 #include "hw/hw.h"
  36 #include "cpu.h"
  37 #include "sysemu/device_tree.h"
  38 #include "qapi/qmp/qjson.h"
  39 #include "monitor/monitor.h"
  40 #include "exec/gdbstub.h"
  41 #include "exec/address-spaces.h"
  42 #include "trace.h"
  43 #include "qapi-event.h"
  44 #include "hw/s390x/s390-pci-inst.h"
  45 #include "hw/s390x/s390-pci-bus.h"
  46 #include "hw/s390x/ipl.h"
  47
  48 /* #define DEBUG_KVM */
  49
  50 #ifdef DEBUG_KVM
  51 #define DPRINTF(fmt, ...) \
  52     do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0)
  53 #else
  54 #define DPRINTF(fmt, ...) \
  55     do { } while (0)
  56 #endif
  57
  58 #define IPA0_DIAG                       0x8300
  59 #define IPA0_SIGP                       0xae00
  60 #define IPA0_B2                         0xb200
  61 #define IPA0_B9                         0xb900
  62 #define IPA0_EB                         0xeb00
  63 #define IPA0_E3                         0xe300
  64
  65 #define PRIV_B2_SCLP_CALL               0x20
  66 #define PRIV_B2_CSCH                    0x30
  67 #define PRIV_B2_HSCH                    0x31
  68 #define PRIV_B2_MSCH                    0x32
  69 #define PRIV_B2_SSCH                    0x33
  70 #define PRIV_B2_STSCH                   0x34
  71 #define PRIV_B2_TSCH                    0x35
  72 #define PRIV_B2_TPI                     0x36
  73 #define PRIV_B2_SAL                     0x37
  74 #define PRIV_B2_RSCH                    0x38
  75 #define PRIV_B2_STCRW                   0x39
  76 #define PRIV_B2_STCPS                   0x3a
  77 #define PRIV_B2_RCHP                    0x3b
  78 #define PRIV_B2_SCHM                    0x3c
  79 #define PRIV_B2_CHSC                    0x5f
  80 #define PRIV_B2_SIGA                    0x74
  81 #define PRIV_B2_XSCH                    0x76
  82
  83 #define PRIV_EB_SQBS                    0x8a
  84 #define PRIV_EB_PCISTB                  0xd0
  85 #define PRIV_EB_SIC                     0xd1
  86
  87 #define PRIV_B9_EQBS                    0x9c
  88 #define PRIV_B9_CLP                     0xa0
  89 #define PRIV_B9_PCISTG                  0xd0
  90 #define PRIV_B9_PCILG                   0xd2
  91 #define PRIV_B9_RPCIT                   0xd3
  92
  93 #define PRIV_E3_MPCIFC                  0xd0
  94 #define PRIV_E3_STPCIFC                 0xd4
  95
  96 #define DIAG_IPL                        0x308
  97 #define DIAG_KVM_HYPERCALL              0x500
  98 #define DIAG_KVM_BREAKPOINT             0x501
  99
 100 #define ICPT_INSTRUCTION                0x04
 101 #define ICPT_PROGRAM                    0x08
 102 #define ICPT_EXT_INT                    0x14
 103 #define ICPT_WAITPSW                    0x1c
 104 #define ICPT_SOFT_INTERCEPT             0x24
 105 #define ICPT_CPU_STOP                   0x28
 106 #define ICPT_IO                         0x40
 107
 108 static CPUWatchpoint hw_watchpoint;
 109 /*
 110  * We don't use a list because this structure is also used to transmit the
 111  * hardware breakpoints to the kernel.
 112  */
 113 static struct kvm_hw_breakpoint *hw_breakpoints;
 114 static int nb_hw_breakpoints;
 115
 116 const KVMCapabilityInfo kvm_arch_required_capabilities[] = {
 117     KVM_CAP_LAST_INFO
 118 };
 119
 120 static int cap_sync_regs;
 121 static int cap_async_pf;
 122
 123 static void *legacy_s390_alloc(size_t size, uint64_t *align);
 124
 125 static int kvm_s390_supports_mem_limit(KVMState *s)
 126 {
 127     struct kvm_device_attr attr = {
 128         .group = KVM_S390_VM_MEM_CTRL,
 129         .attr = KVM_S390_VM_MEM_LIMIT_SIZE,
 130     };
 131
 132     return (kvm_vm_ioctl(s, KVM_HAS_DEVICE_ATTR, &attr) == 0);
 133 }
 134
 135 static int kvm_s390_query_mem_limit(KVMState *s, uint64_t *memory_limit)
 136 {
 137     struct kvm_device_attr attr = {
 138         .group = KVM_S390_VM_MEM_CTRL,
 139         .attr = KVM_S390_VM_MEM_LIMIT_SIZE,
 140         .addr = (uint64_t) memory_limit,
 141     };
 142
 143     return kvm_vm_ioctl(s, KVM_GET_DEVICE_ATTR, &attr);
 144 }
 145
 146 int kvm_s390_set_mem_limit(KVMState *s, uint64_t new_limit, uint64_t *hw_limit)
 147 {
 148     int rc;
 149
 150     struct kvm_device_attr attr = {
 151         .group = KVM_S390_VM_MEM_CTRL,
 152         .attr = KVM_S390_VM_MEM_LIMIT_SIZE,
 153         .addr = (uint64_t) &new_limit,
 154     };
 155
 156     if (!kvm_s390_supports_mem_limit(s)) {
 157         return 0;
 158     }
 159
 160     rc = kvm_s390_query_mem_limit(s, hw_limit);
 161     if (rc) {
 162         return rc;
 163     } else if (*hw_limit < new_limit) {
 164         return -E2BIG;
 165     }
 166
 167     return kvm_vm_ioctl(s, KVM_SET_DEVICE_ATTR, &attr);
 168 }
 169
 170 static int kvm_s390_check_clear_cmma(KVMState *s)
 171 {
 172     struct kvm_device_attr attr = {
 173         .group = KVM_S390_VM_MEM_CTRL,
 174         .attr = KVM_S390_VM_MEM_CLR_CMMA,
 175     };
 176
 177     return kvm_vm_ioctl(s, KVM_HAS_DEVICE_ATTR, &attr);
 178 }
 179
 180 static int kvm_s390_check_enable_cmma(KVMState *s)
 181 {
 182     struct kvm_device_attr attr = {
 183         .group = KVM_S390_VM_MEM_CTRL,
 184         .attr = KVM_S390_VM_MEM_ENABLE_CMMA,
 185     };
 186
 187     return kvm_vm_ioctl(s, KVM_HAS_DEVICE_ATTR, &attr);
 188 }
 189
 190 void kvm_s390_clear_cmma_callback(void *opaque)
 191 {
 192     int rc;
 193     KVMState *s = opaque;
 194     struct kvm_device_attr attr = {
 195         .group = KVM_S390_VM_MEM_CTRL,
 196         .attr = KVM_S390_VM_MEM_CLR_CMMA,
 197     };
 198
 199     rc = kvm_vm_ioctl(s, KVM_SET_DEVICE_ATTR, &attr);
 200     trace_kvm_clear_cmma(rc);
 201 }
 202
 203 static void kvm_s390_enable_cmma(KVMState *s)
 204 {
 205     int rc;
 206     struct kvm_device_attr attr = {
 207         .group = KVM_S390_VM_MEM_CTRL,
 208         .attr = KVM_S390_VM_MEM_ENABLE_CMMA,
 209     };
 210
 211     if (kvm_s390_check_enable_cmma(s) || kvm_s390_check_clear_cmma(s)) {
 212         return;
 213     }
 214
 215     rc = kvm_vm_ioctl(s, KVM_SET_DEVICE_ATTR, &attr);
 216     if (!rc) {
 217         qemu_register_reset(kvm_s390_clear_cmma_callback, s);
 218     }
 219     trace_kvm_enable_cmma(rc);
 220 }
 221
 222 int kvm_arch_init(KVMState *s)
 223 {
 224     cap_sync_regs = kvm_check_extension(s, KVM_CAP_SYNC_REGS);
 225     cap_async_pf = kvm_check_extension(s, KVM_CAP_ASYNC_PF);
 226
 227     if (kvm_check_extension(s, KVM_CAP_VM_ATTRIBUTES)) {
 228         kvm_s390_enable_cmma(s);
 229     }
 230
 231     if (!kvm_check_extension(s, KVM_CAP_S390_GMAP)
 232         || !kvm_check_extension(s, KVM_CAP_S390_COW)) {
 233         phys_mem_set_alloc(legacy_s390_alloc);
 234     }
 235
 236     kvm_vm_enable_cap(s, KVM_CAP_S390_USER_SIGP, 0);
 237
 238     return 0;
 239 }
 240
 241 unsigned long kvm_arch_vcpu_id(CPUState *cpu)
 242 {
 243     return cpu->cpu_index;
 244 }
 245
 246 int kvm_arch_init_vcpu(CPUState *cs)
 247 {
 248     S390CPU *cpu = S390_CPU(cs);
 249     kvm_s390_set_cpu_state(cpu, cpu->env.cpu_state);
 250     return 0;
 251 }
 252
 253 void kvm_s390_reset_vcpu(S390CPU *cpu)
 254 {
 255     CPUState *cs = CPU(cpu);
 256
 257     /* The initial reset call is needed here to reset in-kernel
 258      * vcpu data that we can't access directly from QEMU
 259      * (i.e. with older kernels which don't support sync_regs/ONE_REG).
 260      * Before this ioctl cpu_synchronize_state() is called in common kvm
 261      * code (kvm-all) */
 262     if (kvm_vcpu_ioctl(cs, KVM_S390_INITIAL_RESET, NULL)) {
 263         error_report("Initial CPU reset failed on CPU %i", cs->cpu_index);
 264     }
 265 }
 266
 267 static int can_sync_regs(CPUState *cs, int regs)
 268 {
 269     return cap_sync_regs && (cs->kvm_run->kvm_valid_regs & regs) == regs;
 270 }
 271
 272 int kvm_arch_put_registers(CPUState *cs, int level)
 273 {
 274     S390CPU *cpu = S390_CPU(cs);
 275     CPUS390XState *env = &cpu->env;
 276     struct kvm_sregs sregs;
 277     struct kvm_regs regs;
 278     struct kvm_fpu fpu = {};
 279     int r;
 280     int i;
 281
 282     /* always save the PSW  and the GPRS*/
 283     cs->kvm_run->psw_addr = env->psw.addr;
 284     cs->kvm_run->psw_mask = env->psw.mask;
 285
 286     if (can_sync_regs(cs, KVM_SYNC_GPRS)) {
 287         for (i = 0; i < 16; i++) {
 288             cs->kvm_run->s.regs.gprs[i] = env->regs[i];
 289             cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_GPRS;
 290         }
 291     } else {
 292         for (i = 0; i < 16; i++) {
 293             regs.gprs[i] = env->regs[i];
 294         }
 295         r = kvm_vcpu_ioctl(cs, KVM_SET_REGS, &regs);
 296         if (r < 0) {
 297             return r;
 298         }
 299     }
 300
 301     /* Floating point */
 302     for (i = 0; i < 16; i++) {
 303         fpu.fprs[i] = env->fregs[i].ll;
 304     }
 305     fpu.fpc = env->fpc;
 306
 307     r = kvm_vcpu_ioctl(cs, KVM_SET_FPU, &fpu);
 308     if (r < 0) {
 309         return r;
 310     }
 311
 312     /* Do we need to save more than that? */
 313     if (level == KVM_PUT_RUNTIME_STATE) {
 314         return 0;
 315     }
 316
 317     if (can_sync_regs(cs, KVM_SYNC_ARCH0)) {
 318         cs->kvm_run->s.regs.cputm = env->cputm;
 319         cs->kvm_run->s.regs.ckc = env->ckc;
 320         cs->kvm_run->s.regs.todpr = env->todpr;
 321         cs->kvm_run->s.regs.gbea = env->gbea;
 322         cs->kvm_run->s.regs.pp = env->pp;
 323         cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_ARCH0;
 324     } else {
 325         /*
 326          * These ONE_REGS are not protected by a capability. As they are only
 327          * necessary for migration we just trace a possible error, but don't
 328          * return with an error return code.
 329          */
 330         kvm_set_one_reg(cs, KVM_REG_S390_CPU_TIMER, &env->cputm);
 331         kvm_set_one_reg(cs, KVM_REG_S390_CLOCK_COMP, &env->ckc);
 332         kvm_set_one_reg(cs, KVM_REG_S390_TODPR, &env->todpr);
 333         kvm_set_one_reg(cs, KVM_REG_S390_GBEA, &env->gbea);
 334         kvm_set_one_reg(cs, KVM_REG_S390_PP, &env->pp);
 335     }
 336
 337     /* pfault parameters */
 338     if (can_sync_regs(cs, KVM_SYNC_PFAULT)) {
 339         cs->kvm_run->s.regs.pft = env->pfault_token;
 340         cs->kvm_run->s.regs.pfs = env->pfault_select;
 341         cs->kvm_run->s.regs.pfc = env->pfault_compare;
 342         cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_PFAULT;
 343     } else if (cap_async_pf) {
 344         r = kvm_set_one_reg(cs, KVM_REG_S390_PFTOKEN, &env->pfault_token);
 345         if (r < 0) {
 346             return r;
 347         }
 348         r = kvm_set_one_reg(cs, KVM_REG_S390_PFCOMPARE, &env->pfault_compare);
 349         if (r < 0) {
 350             return r;
 351         }
 352         r = kvm_set_one_reg(cs, KVM_REG_S390_PFSELECT, &env->pfault_select);
 353         if (r < 0) {
 354             return r;
 355         }
 356     }
 357
 358     /* access registers and control registers*/
 359     if (can_sync_regs(cs, KVM_SYNC_ACRS | KVM_SYNC_CRS)) {
 360         for (i = 0; i < 16; i++) {
 361             cs->kvm_run->s.regs.acrs[i] = env->aregs[i];
 362             cs->kvm_run->s.regs.crs[i] = env->cregs[i];
 363         }
 364         cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_ACRS;
 365         cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_CRS;
 366     } else {
 367         for (i = 0; i < 16; i++) {
 368             sregs.acrs[i] = env->aregs[i];
 369             sregs.crs[i] = env->cregs[i];
 370         }
 371         r = kvm_vcpu_ioctl(cs, KVM_SET_SREGS, &sregs);
 372         if (r < 0) {
 373             return r;
 374         }
 375     }
 376
 377     /* Finally the prefix */
 378     if (can_sync_regs(cs, KVM_SYNC_PREFIX)) {
 379         cs->kvm_run->s.regs.prefix = env->psa;
 380         cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_PREFIX;
 381     } else {
 382         /* prefix is only supported via sync regs */
 383     }
 384     return 0;
 385 }
 386
 387 int kvm_arch_get_registers(CPUState *cs)
 388 {
 389     S390CPU *cpu = S390_CPU(cs);
 390     CPUS390XState *env = &cpu->env;
 391     struct kvm_sregs sregs;
 392     struct kvm_regs regs;
 393     struct kvm_fpu fpu;
 394     int i, r;
 395
 396     /* get the PSW */
 397     env->psw.addr = cs->kvm_run->psw_addr;
 398     env->psw.mask = cs->kvm_run->psw_mask;
 399
 400     /* the GPRS */
 401     if (can_sync_regs(cs, KVM_SYNC_GPRS)) {
 402         for (i = 0; i < 16; i++) {
 403             env->regs[i] = cs->kvm_run->s.regs.gprs[i];
 404         }
 405     } else {
 406         r = kvm_vcpu_ioctl(cs, KVM_GET_REGS, &regs);
 407         if (r < 0) {
 408             return r;
 409         }
 410          for (i = 0; i < 16; i++) {
 411             env->regs[i] = regs.gprs[i];
 412         }
 413     }
 414
 415     /* The ACRS and CRS */
 416     if (can_sync_regs(cs, KVM_SYNC_ACRS | KVM_SYNC_CRS)) {
 417         for (i = 0; i < 16; i++) {
 418             env->aregs[i] = cs->kvm_run->s.regs.acrs[i];
 419             env->cregs[i] = cs->kvm_run->s.regs.crs[i];
 420         }
 421     } else {
 422         r = kvm_vcpu_ioctl(cs, KVM_GET_SREGS, &sregs);
 423         if (r < 0) {
 424             return r;
 425         }
 426          for (i = 0; i < 16; i++) {
 427             env->aregs[i] = sregs.acrs[i];
 428             env->cregs[i] = sregs.crs[i];
 429         }
 430     }
 431
 432     /* Floating point */
 433     r = kvm_vcpu_ioctl(cs, KVM_GET_FPU, &fpu);
 434     if (r < 0) {
 435         return r;
 436     }
 437     for (i = 0; i < 16; i++) {
 438         env->fregs[i].ll = fpu.fprs[i];
 439     }
 440     env->fpc = fpu.fpc;
 441
 442     /* The prefix */
 443     if (can_sync_regs(cs, KVM_SYNC_PREFIX)) {
 444         env->psa = cs->kvm_run->s.regs.prefix;
 445     }
 446
 447     if (can_sync_regs(cs, KVM_SYNC_ARCH0)) {
 448         env->cputm = cs->kvm_run->s.regs.cputm;
 449         env->ckc = cs->kvm_run->s.regs.ckc;
 450         env->todpr = cs->kvm_run->s.regs.todpr;
 451         env->gbea = cs->kvm_run->s.regs.gbea;
 452         env->pp = cs->kvm_run->s.regs.pp;
 453     } else {
 454         /*
 455          * These ONE_REGS are not protected by a capability. As they are only
 456          * necessary for migration we just trace a possible error, but don't
 457          * return with an error return code.
 458          */
 459         kvm_get_one_reg(cs, KVM_REG_S390_CPU_TIMER, &env->cputm);
 460         kvm_get_one_reg(cs, KVM_REG_S390_CLOCK_COMP, &env->ckc);
 461         kvm_get_one_reg(cs, KVM_REG_S390_TODPR, &env->todpr);
 462         kvm_get_one_reg(cs, KVM_REG_S390_GBEA, &env->gbea);
 463         kvm_get_one_reg(cs, KVM_REG_S390_PP, &env->pp);
 464     }
 465
 466     /* pfault parameters */
 467     if (can_sync_regs(cs, KVM_SYNC_PFAULT)) {
 468         env->pfault_token = cs->kvm_run->s.regs.pft;
 469         env->pfault_select = cs->kvm_run->s.regs.pfs;
 470         env->pfault_compare = cs->kvm_run->s.regs.pfc;
 471     } else if (cap_async_pf) {
 472         r = kvm_get_one_reg(cs, KVM_REG_S390_PFTOKEN, &env->pfault_token);
 473         if (r < 0) {
 474             return r;
 475         }
 476         r = kvm_get_one_reg(cs, KVM_REG_S390_PFCOMPARE, &env->pfault_compare);
 477         if (r < 0) {
 478             return r;
 479         }
 480         r = kvm_get_one_reg(cs, KVM_REG_S390_PFSELECT, &env->pfault_select);
 481         if (r < 0) {
 482             return r;
 483         }
 484     }
 485
 486     return 0;
 487 }
 488
 489 /*
 490  * Legacy layout for s390:
 491  * Older S390 KVM requires the topmost vma of the RAM to be
 492  * smaller than an system defined value, which is at least 256GB.
 493  * Larger systems have larger values. We put the guest between
 494  * the end of data segment (system break) and this value. We
 495  * use 32GB as a base to have enough room for the system break
 496  * to grow. We also have to use MAP parameters that avoid
 497  * read-only mapping of guest pages.
 498  */
 499 static void *legacy_s390_alloc(size_t size, uint64_t *align)
 500 {
 501     void *mem;
 502
 503     mem = mmap((void *) 0x800000000ULL, size,
 504                PROT_EXEC|PROT_READ|PROT_WRITE,
 505                MAP_SHARED | MAP_ANONYMOUS | MAP_FIXED, -1, 0);
 506     return mem == MAP_FAILED ? NULL : mem;
 507 }
 508
 509 /* DIAG 501 is used for sw breakpoints */
 510 static const uint8_t diag_501[] = {0x83, 0x24, 0x05, 0x01};
 511
 512 int kvm_arch_insert_sw_breakpoint(CPUState *cs, struct kvm_sw_breakpoint *bp)
 513 {
 514
 515     if (cpu_memory_rw_debug(cs, bp->pc, (uint8_t *)&bp->saved_insn,
 516                             sizeof(diag_501), 0) ||
 517         cpu_memory_rw_debug(cs, bp->pc, (uint8_t *)diag_501,
 518                             sizeof(diag_501), 1)) {
 519         return -EINVAL;
 520     }
 521     return 0;
 522 }
 523
 524 int kvm_arch_remove_sw_breakpoint(CPUState *cs, struct kvm_sw_breakpoint *bp)
 525 {
 526     uint8_t t[sizeof(diag_501)];
 527
 528     if (cpu_memory_rw_debug(cs, bp->pc, t, sizeof(diag_501), 0)) {
 529         return -EINVAL;
 530     } else if (memcmp(t, diag_501, sizeof(diag_501))) {
 531         return -EINVAL;
 532     } else if (cpu_memory_rw_debug(cs, bp->pc, (uint8_t *)&bp->saved_insn,
 533                                    sizeof(diag_501), 1)) {
 534         return -EINVAL;
 535     }
 536
 537     return 0;
 538 }
 539
 540 static struct kvm_hw_breakpoint *find_hw_breakpoint(target_ulong addr,
 541                                                     int len, int type)
 542 {
 543     int n;
 544
 545     for (n = 0; n < nb_hw_breakpoints; n++) {
 546         if (hw_breakpoints[n].addr == addr && hw_breakpoints[n].type == type &&
 547             (hw_breakpoints[n].len == len || len == -1)) {
 548             return &hw_breakpoints[n];
 549         }
 550     }
 551
 552     return NULL;
 553 }
 554
 555 static int insert_hw_breakpoint(target_ulong addr, int len, int type)
 556 {
 557     int size;
 558
 559     if (find_hw_breakpoint(addr, len, type)) {
 560         return -EEXIST;
 561     }
 562
 563     size = (nb_hw_breakpoints + 1) * sizeof(struct kvm_hw_breakpoint);
 564
 565     if (!hw_breakpoints) {
 566         nb_hw_breakpoints = 0;
 567         hw_breakpoints = (struct kvm_hw_breakpoint *)g_try_malloc(size);
 568     } else {
 569         hw_breakpoints =
 570             (struct kvm_hw_breakpoint *)g_try_realloc(hw_breakpoints, size);
 571     }
 572
 573     if (!hw_breakpoints) {
 574         nb_hw_breakpoints = 0;
 575         return -ENOMEM;
 576     }
 577
 578     hw_breakpoints[nb_hw_breakpoints].addr = addr;
 579     hw_breakpoints[nb_hw_breakpoints].len = len;
 580     hw_breakpoints[nb_hw_breakpoints].type = type;
 581
 582     nb_hw_breakpoints++;
 583
 584     return 0;
 585 }
 586
 587 int kvm_arch_insert_hw_breakpoint(target_ulong addr,
 588                                   target_ulong len, int type)
 589 {
 590     switch (type) {
 591     case GDB_BREAKPOINT_HW:
 592         type = KVM_HW_BP;
 593         break;
 594     case GDB_WATCHPOINT_WRITE:
 595         if (len < 1) {
 596             return -EINVAL;
 597         }
 598         type = KVM_HW_WP_WRITE;
 599         break;
 600     default:
 601         return -ENOSYS;
 602     }
 603     return insert_hw_breakpoint(addr, len, type);
 604 }
 605
 606 int kvm_arch_remove_hw_breakpoint(target_ulong addr,
 607                                   target_ulong len, int type)
 608 {
 609     int size;
 610     struct kvm_hw_breakpoint *bp = find_hw_breakpoint(addr, len, type);
 611
 612     if (bp == NULL) {
 613         return -ENOENT;
 614     }
 615
 616     nb_hw_breakpoints--;
 617     if (nb_hw_breakpoints > 0) {
 618         /*
 619          * In order to trim the array, move the last element to the position to
 620          * be removed - if necessary.
 621          */
 622         if (bp != &hw_breakpoints[nb_hw_breakpoints]) {
 623             *bp = hw_breakpoints[nb_hw_breakpoints];
 624         }
 625         size = nb_hw_breakpoints * sizeof(struct kvm_hw_breakpoint);
 626         hw_breakpoints =
 627              (struct kvm_hw_breakpoint *)g_realloc(hw_breakpoints, size);
 628     } else {
 629         g_free(hw_breakpoints);
 630         hw_breakpoints = NULL;
 631     }
 632
 633     return 0;
 634 }
 635
 636 void kvm_arch_remove_all_hw_breakpoints(void)
 637 {
 638     nb_hw_breakpoints = 0;
 639     g_free(hw_breakpoints);
 640     hw_breakpoints = NULL;
 641 }
 642
 643 void kvm_arch_update_guest_debug(CPUState *cpu, struct kvm_guest_debug *dbg)
 644 {
 645     int i;
 646
 647     if (nb_hw_breakpoints > 0) {
 648         dbg->arch.nr_hw_bp = nb_hw_breakpoints;
 649         dbg->arch.hw_bp = hw_breakpoints;
 650
 651         for (i = 0; i < nb_hw_breakpoints; ++i) {
 652             hw_breakpoints[i].phys_addr = s390_cpu_get_phys_addr_debug(cpu,
 653                                                        hw_breakpoints[i].addr);
 654         }
 655         dbg->control |= KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_USE_HW_BP;
 656     } else {
 657         dbg->arch.nr_hw_bp = 0;
 658         dbg->arch.hw_bp = NULL;
 659     }
 660 }
 661
 662 void kvm_arch_pre_run(CPUState *cpu, struct kvm_run *run)
 663 {
 664 }
 665
 666 void kvm_arch_post_run(CPUState *cpu, struct kvm_run *run)
 667 {
 668 }
 669
 670 int kvm_arch_process_async_events(CPUState *cs)
 671 {
 672     return cs->halted;
 673 }
 674
 675 static int s390_kvm_irq_to_interrupt(struct kvm_s390_irq *irq,
 676                                      struct kvm_s390_interrupt *interrupt)
 677 {
 678     int r = 0;
 679
 680     interrupt->type = irq->type;
 681     switch (irq->type) {
 682     case KVM_S390_INT_VIRTIO:
 683         interrupt->parm = irq->u.ext.ext_params;
 684         /* fall through */
 685     case KVM_S390_INT_PFAULT_INIT:
 686     case KVM_S390_INT_PFAULT_DONE:
 687         interrupt->parm64 = irq->u.ext.ext_params2;
 688         break;
 689     case KVM_S390_PROGRAM_INT:
 690         interrupt->parm = irq->u.pgm.code;
 691         break;
 692     case KVM_S390_SIGP_SET_PREFIX:
 693         interrupt->parm = irq->u.prefix.address;
 694         break;
 695     case KVM_S390_INT_SERVICE:
 696         interrupt->parm = irq->u.ext.ext_params;
 697         break;
 698     case KVM_S390_MCHK:
 699         interrupt->parm = irq->u.mchk.cr14;
 700         interrupt->parm64 = irq->u.mchk.mcic;
 701         break;
 702     case KVM_S390_INT_EXTERNAL_CALL:
 703         interrupt->parm = irq->u.extcall.code;
 704         break;
 705     case KVM_S390_INT_EMERGENCY:
 706         interrupt->parm = irq->u.emerg.code;
 707         break;
 708     case KVM_S390_SIGP_STOP:
 709     case KVM_S390_RESTART:
 710         break; /* These types have no parameters */
 711     case KVM_S390_INT_IO_MIN...KVM_S390_INT_IO_MAX:
 712         interrupt->parm = irq->u.io.subchannel_id << 16;
 713         interrupt->parm |= irq->u.io.subchannel_nr;
 714         interrupt->parm64 = (uint64_t)irq->u.io.io_int_parm << 32;
 715         interrupt->parm64 |= irq->u.io.io_int_word;
 716         break;
 717     default:
 718         r = -EINVAL;
 719         break;
 720     }
 721     return r;
 722 }
 723
 724 void kvm_s390_vcpu_interrupt(S390CPU *cpu, struct kvm_s390_irq *irq)
 725 {
 726     struct kvm_s390_interrupt kvmint = {};
 727     CPUState *cs = CPU(cpu);
 728     int r;
 729
 730     r = s390_kvm_irq_to_interrupt(irq, &kvmint);
 731     if (r < 0) {
 732         fprintf(stderr, "%s called with bogus interrupt\n", __func__);
 733         exit(1);
 734     }
 735
 736     r = kvm_vcpu_ioctl(cs, KVM_S390_INTERRUPT, &kvmint);
 737     if (r < 0) {
 738         fprintf(stderr, "KVM failed to inject interrupt\n");
 739         exit(1);
 740     }
 741 }
 742
 743 static void __kvm_s390_floating_interrupt(struct kvm_s390_irq *irq)
 744 {
 745     struct kvm_s390_interrupt kvmint = {};
 746     int r;
 747
 748     r = s390_kvm_irq_to_interrupt(irq, &kvmint);
 749     if (r < 0) {
 750         fprintf(stderr, "%s called with bogus interrupt\n", __func__);
 751         exit(1);
 752     }
 753
 754     r = kvm_vm_ioctl(kvm_state, KVM_S390_INTERRUPT, &kvmint);
 755     if (r < 0) {
 756         fprintf(stderr, "KVM failed to inject interrupt\n");
 757         exit(1);
 758     }
 759 }
 760
 761 void kvm_s390_floating_interrupt(struct kvm_s390_irq *irq)
 762 {
 763     static bool use_flic = true;
 764     int r;
 765
 766     if (use_flic) {
 767         r = kvm_s390_inject_flic(irq);
 768         if (r == -ENOSYS) {
 769             use_flic = false;
 770         }
 771         if (!r) {
 772             return;
 773         }
 774     }
 775     __kvm_s390_floating_interrupt(irq);
 776 }
 777
 778 void kvm_s390_virtio_irq(int config_change, uint64_t token)
 779 {
 780     struct kvm_s390_irq irq = {
 781         .type = KVM_S390_INT_VIRTIO,
 782         .u.ext.ext_params = config_change,
 783         .u.ext.ext_params2 = token,
 784     };
 785
 786     kvm_s390_floating_interrupt(&irq);
 787 }
 788
 789 void kvm_s390_service_interrupt(uint32_t parm)
 790 {
 791     struct kvm_s390_irq irq = {
 792         .type = KVM_S390_INT_SERVICE,
 793         .u.ext.ext_params = parm,
 794     };
 795
 796     kvm_s390_floating_interrupt(&irq);
 797 }
 798
 799 static void enter_pgmcheck(S390CPU *cpu, uint16_t code)
 800 {
 801     struct kvm_s390_irq irq = {
 802         .type = KVM_S390_PROGRAM_INT,
 803         .u.pgm.code = code,
 804     };
 805
 806     kvm_s390_vcpu_interrupt(cpu, &irq);
 807 }
 808
 809 void kvm_s390_access_exception(S390CPU *cpu, uint16_t code, uint64_t te_code)
 810 {
 811     struct kvm_s390_irq irq = {
 812         .type = KVM_S390_PROGRAM_INT,
 813         .u.pgm.code = code,
 814         .u.pgm.trans_exc_code = te_code,
 815         .u.pgm.exc_access_id = te_code & 3,
 816     };
 817
 818     kvm_s390_vcpu_interrupt(cpu, &irq);
 819 }
 820
 821 static int kvm_sclp_service_call(S390CPU *cpu, struct kvm_run *run,
 822                                  uint16_t ipbh0)
 823 {
 824     CPUS390XState *env = &cpu->env;
 825     uint64_t sccb;
 826     uint32_t code;
 827     int r = 0;
 828
 829     cpu_synchronize_state(CPU(cpu));
 830     sccb = env->regs[ipbh0 & 0xf];
 831     code = env->regs[(ipbh0 & 0xf0) >> 4];
 832
 833     r = sclp_service_call(env, sccb, code);
 834     if (r < 0) {
 835         enter_pgmcheck(cpu, -r);
 836     } else {
 837         setcc(cpu, r);
 838     }
 839
 840     return 0;
 841 }
 842
 843 static int handle_b2(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1)
 844 {
 845     CPUS390XState *env = &cpu->env;
 846     int rc = 0;
 847     uint16_t ipbh0 = (run->s390_sieic.ipb & 0xffff0000) >> 16;
 848
 849     cpu_synchronize_state(CPU(cpu));
 850
 851     switch (ipa1) {
 852     case PRIV_B2_XSCH:
 853         ioinst_handle_xsch(cpu, env->regs[1]);
 854         break;
 855     case PRIV_B2_CSCH:
 856         ioinst_handle_csch(cpu, env->regs[1]);
 857         break;
 858     case PRIV_B2_HSCH:
 859         ioinst_handle_hsch(cpu, env->regs[1]);
 860         break;
 861     case PRIV_B2_MSCH:
 862         ioinst_handle_msch(cpu, env->regs[1], run->s390_sieic.ipb);
 863         break;
 864     case PRIV_B2_SSCH:
 865         ioinst_handle_ssch(cpu, env->regs[1], run->s390_sieic.ipb);
 866         break;
 867     case PRIV_B2_STCRW:
 868         ioinst_handle_stcrw(cpu, run->s390_sieic.ipb);
 869         break;
 870     case PRIV_B2_STSCH:
 871         ioinst_handle_stsch(cpu, env->regs[1], run->s390_sieic.ipb);
 872         break;
 873     case PRIV_B2_TSCH:
 874         /* We should only get tsch via KVM_EXIT_S390_TSCH. */
 875         fprintf(stderr, "Spurious tsch intercept\n");
 876         break;
 877     case PRIV_B2_CHSC:
 878         ioinst_handle_chsc(cpu, run->s390_sieic.ipb);
 879         break;
 880     case PRIV_B2_TPI:
 881         /* This should have been handled by kvm already. */
 882         fprintf(stderr, "Spurious tpi intercept\n");
 883         break;
 884     case PRIV_B2_SCHM:
 885         ioinst_handle_schm(cpu, env->regs[1], env->regs[2],
 886                            run->s390_sieic.ipb);
 887         break;
 888     case PRIV_B2_RSCH:
 889         ioinst_handle_rsch(cpu, env->regs[1]);
 890         break;
 891     case PRIV_B2_RCHP:
 892         ioinst_handle_rchp(cpu, env->regs[1]);
 893         break;
 894     case PRIV_B2_STCPS:
 895         /* We do not provide this instruction, it is suppressed. */
 896         break;
 897     case PRIV_B2_SAL:
 898         ioinst_handle_sal(cpu, env->regs[1]);
 899         break;
 900     case PRIV_B2_SIGA:
 901         /* Not provided, set CC = 3 for subchannel not operational */
 902         setcc(cpu, 3);
 903         break;
 904     case PRIV_B2_SCLP_CALL:
 905         rc = kvm_sclp_service_call(cpu, run, ipbh0);
 906         break;
 907     default:
 908         rc = -1;
 909         DPRINTF("KVM: unhandled PRIV: 0xb2%x\n", ipa1);
 910         break;
 911     }
 912
 913     return rc;
 914 }
 915
 916 static uint64_t get_base_disp_rxy(S390CPU *cpu, struct kvm_run *run)
 917 {
 918     CPUS390XState *env = &cpu->env;
 919     uint32_t x2 = (run->s390_sieic.ipa & 0x000f);
 920     uint32_t base2 = run->s390_sieic.ipb >> 28;
 921     uint32_t disp2 = ((run->s390_sieic.ipb & 0x0fff0000) >> 16) +
 922                      ((run->s390_sieic.ipb & 0xff00) << 4);
 923
 924     if (disp2 & 0x80000) {
 925         disp2 += 0xfff00000;
 926     }
 927
 928     return (base2 ? env->regs[base2] : 0) +
 929            (x2 ? env->regs[x2] : 0) + (long)(int)disp2;
 930 }
 931
 932 static uint64_t get_base_disp_rsy(S390CPU *cpu, struct kvm_run *run)
 933 {
 934     CPUS390XState *env = &cpu->env;
 935     uint32_t base2 = run->s390_sieic.ipb >> 28;
 936     uint32_t disp2 = ((run->s390_sieic.ipb & 0x0fff0000) >> 16) +
 937                      ((run->s390_sieic.ipb & 0xff00) << 4);
 938
 939     if (disp2 & 0x80000) {
 940         disp2 += 0xfff00000;
 941     }
 942
 943     return (base2 ? env->regs[base2] : 0) + (long)(int)disp2;
 944 }
 945
 946 static int kvm_clp_service_call(S390CPU *cpu, struct kvm_run *run)
 947 {
 948     uint8_t r2 = (run->s390_sieic.ipb & 0x000f0000) >> 16;
 949
 950     return clp_service_call(cpu, r2);
 951 }
 952
 953 static int kvm_pcilg_service_call(S390CPU *cpu, struct kvm_run *run)
 954 {
 955     uint8_t r1 = (run->s390_sieic.ipb & 0x00f00000) >> 20;
 956     uint8_t r2 = (run->s390_sieic.ipb & 0x000f0000) >> 16;
 957
 958     return pcilg_service_call(cpu, r1, r2);
 959 }
 960
 961 static int kvm_pcistg_service_call(S390CPU *cpu, struct kvm_run *run)
 962 {
 963     uint8_t r1 = (run->s390_sieic.ipb & 0x00f00000) >> 20;
 964     uint8_t r2 = (run->s390_sieic.ipb & 0x000f0000) >> 16;
 965
 966     return pcistg_service_call(cpu, r1, r2);
 967 }
 968
 969 static int kvm_stpcifc_service_call(S390CPU *cpu, struct kvm_run *run)
 970 {
 971     uint8_t r1 = (run->s390_sieic.ipa & 0x00f0) >> 4;
 972     uint64_t fiba;
 973
 974     cpu_synchronize_state(CPU(cpu));
 975     fiba = get_base_disp_rxy(cpu, run);
 976
 977     return stpcifc_service_call(cpu, r1, fiba);
 978 }
 979
 980 static int kvm_sic_service_call(S390CPU *cpu, struct kvm_run *run)
 981 {
 982     /* NOOP */
 983     return 0;
 984 }
 985
 986 static int kvm_rpcit_service_call(S390CPU *cpu, struct kvm_run *run)
 987 {
 988     uint8_t r1 = (run->s390_sieic.ipb & 0x00f00000) >> 20;
 989     uint8_t r2 = (run->s390_sieic.ipb & 0x000f0000) >> 16;
 990
 991     return rpcit_service_call(cpu, r1, r2);
 992 }
 993
 994 static int kvm_pcistb_service_call(S390CPU *cpu, struct kvm_run *run)
 995 {
 996     uint8_t r1 = (run->s390_sieic.ipa & 0x00f0) >> 4;
 997     uint8_t r3 = run->s390_sieic.ipa & 0x000f;
 998     uint64_t gaddr;
 999
1000     cpu_synchronize_state(CPU(cpu));
1001     gaddr = get_base_disp_rsy(cpu, run);
1002
1003     return pcistb_service_call(cpu, r1, r3, gaddr);
1004 }
1005
1006 static int kvm_mpcifc_service_call(S390CPU *cpu, struct kvm_run *run)
1007 {
1008     uint8_t r1 = (run->s390_sieic.ipa & 0x00f0) >> 4;
1009     uint64_t fiba;
1010
1011     cpu_synchronize_state(CPU(cpu));
1012     fiba = get_base_disp_rxy(cpu, run);
1013
1014     return mpcifc_service_call(cpu, r1, fiba);
1015 }
1016
1017 static int handle_b9(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1)
1018 {
1019     int r = 0;
1020
1021     switch (ipa1) {
1022     case PRIV_B9_CLP:
1023         r = kvm_clp_service_call(cpu, run);
1024         break;
1025     case PRIV_B9_PCISTG:
1026         r = kvm_pcistg_service_call(cpu, run);
1027         break;
1028     case PRIV_B9_PCILG:
1029         r = kvm_pcilg_service_call(cpu, run);
1030         break;
1031     case PRIV_B9_RPCIT:
1032         r = kvm_rpcit_service_call(cpu, run);
1033         break;
1034     case PRIV_B9_EQBS:
1035         /* just inject exception */
1036         r = -1;
1037         break;
1038     default:
1039         r = -1;
1040         DPRINTF("KVM: unhandled PRIV: 0xb9%x\n", ipa1);
1041         break;
1042     }
1043
1044     return r;
1045 }
1046
1047 static int handle_eb(S390CPU *cpu, struct kvm_run *run, uint8_t ipbl)
1048 {
1049     int r = 0;
1050
1051     switch (ipbl) {
1052     case PRIV_EB_PCISTB:
1053         r = kvm_pcistb_service_call(cpu, run);
1054         break;
1055     case PRIV_EB_SIC:
1056         r = kvm_sic_service_call(cpu, run);
1057         break;
1058     case PRIV_EB_SQBS:
1059         /* just inject exception */
1060         r = -1;
1061         break;
1062     default:
1063         r = -1;
1064         DPRINTF("KVM: unhandled PRIV: 0xeb%x\n", ipbl);
1065         break;
1066     }
1067
1068     return r;
1069 }
1070
1071 static int handle_e3(S390CPU *cpu, struct kvm_run *run, uint8_t ipbl)
1072 {
1073     int r = 0;
1074
1075     switch (ipbl) {
1076     case PRIV_E3_MPCIFC:
1077         r = kvm_mpcifc_service_call(cpu, run);
1078         break;
1079     case PRIV_E3_STPCIFC:
1080         r = kvm_stpcifc_service_call(cpu, run);
1081         break;
1082     default:
1083         r = -1;
1084         DPRINTF("KVM: unhandled PRIV: 0xe3%x\n", ipbl);
1085         break;
1086     }
1087
1088     return r;
1089 }
1090
1091 static int handle_hypercall(S390CPU *cpu, struct kvm_run *run)
1092 {
1093     CPUS390XState *env = &cpu->env;
1094     int ret;
1095
1096     cpu_synchronize_state(CPU(cpu));
1097     ret = s390_virtio_hypercall(env);
1098     if (ret == -EINVAL) {
1099         enter_pgmcheck(cpu, PGM_SPECIFICATION);
1100         return 0;
1101     }
1102
1103     return ret;
1104 }
1105
1106 static void kvm_handle_diag_308(S390CPU *cpu, struct kvm_run *run)
1107 {
1108     uint64_t r1, r3;
1109
1110     cpu_synchronize_state(CPU(cpu));
1111     r1 = (run->s390_sieic.ipa & 0x00f0) >> 4;
1112     r3 = run->s390_sieic.ipa & 0x000f;
1113     handle_diag_308(&cpu->env, r1, r3);
1114 }
1115
1116 static int handle_sw_breakpoint(S390CPU *cpu, struct kvm_run *run)
1117 {
1118     CPUS390XState *env = &cpu->env;
1119     unsigned long pc;
1120
1121     cpu_synchronize_state(CPU(cpu));
1122
1123     pc = env->psw.addr - 4;
1124     if (kvm_find_sw_breakpoint(CPU(cpu), pc)) {
1125         env->psw.addr = pc;
1126         return EXCP_DEBUG;
1127     }
1128
1129     return -ENOENT;
1130 }
1131
1132 #define DIAG_KVM_CODE_MASK 0x000000000000ffff
1133
1134 static int handle_diag(S390CPU *cpu, struct kvm_run *run, uint32_t ipb)
1135 {
1136     int r = 0;
1137     uint16_t func_code;
1138
1139     /*
1140      * For any diagnose call we support, bits 48-63 of the resulting
1141      * address specify the function code; the remainder is ignored.
1142      */
1143     func_code = decode_basedisp_rs(&cpu->env, ipb) & DIAG_KVM_CODE_MASK;
1144     switch (func_code) {
1145     case DIAG_IPL:
1146         kvm_handle_diag_308(cpu, run);
1147         break;
1148     case DIAG_KVM_HYPERCALL:
1149         r = handle_hypercall(cpu, run);
1150         break;
1151     case DIAG_KVM_BREAKPOINT:
1152         r = handle_sw_breakpoint(cpu, run);
1153         break;
1154     default:
1155         DPRINTF("KVM: unknown DIAG: 0x%x\n", func_code);
1156         enter_pgmcheck(cpu, PGM_SPECIFICATION);
1157         break;
1158     }
1159
1160     return r;
1161 }
1162
1163 typedef struct SigpInfo {
1164     S390CPU *cpu;
1165     uint64_t param;
1166     int cc;
1167     uint64_t *status_reg;
1168 } SigpInfo;
1169
1170 static void set_sigp_status(SigpInfo *si, uint64_t status)
1171 {
1172     *si->status_reg &= 0xffffffff00000000ULL;
1173     *si->status_reg |= status;
1174     si->cc = SIGP_CC_STATUS_STORED;
1175 }
1176
1177 static void sigp_start(void *arg)
1178 {
1179     SigpInfo *si = arg;
1180
1181     if (s390_cpu_get_state(si->cpu) != CPU_STATE_STOPPED) {
1182         si->cc = SIGP_CC_ORDER_CODE_ACCEPTED;
1183         return;
1184     }
1185
1186     s390_cpu_set_state(CPU_STATE_OPERATING, si->cpu);
1187     si->cc = SIGP_CC_ORDER_CODE_ACCEPTED;
1188 }
1189
1190 static void sigp_stop(void *arg)
1191 {
1192     SigpInfo *si = arg;
1193     struct kvm_s390_irq irq = {
1194         .type = KVM_S390_SIGP_STOP,
1195     };
1196
1197     if (s390_cpu_get_state(si->cpu) != CPU_STATE_OPERATING) {
1198         si->cc = SIGP_CC_ORDER_CODE_ACCEPTED;
1199         return;
1200     }
1201
1202     /* disabled wait - sleeping in user space */
1203     if (CPU(si->cpu)->halted) {
1204         s390_cpu_set_state(CPU_STATE_STOPPED, si->cpu);
1205     } else {
1206         /* execute the stop function */
1207         si->cpu->env.sigp_order = SIGP_STOP;
1208         kvm_s390_vcpu_interrupt(si->cpu, &irq);
1209     }
1210     si->cc = SIGP_CC_ORDER_CODE_ACCEPTED;
1211 }
1212
1213 #define KVM_S390_STORE_STATUS_DEF_ADDR offsetof(LowCore, floating_pt_save_area)
1214 #define SAVE_AREA_SIZE 512
1215 static int kvm_s390_store_status(S390CPU *cpu, hwaddr addr, bool store_arch)
1216 {
1217     static const uint8_t ar_id = 1;
1218     uint64_t ckc = cpu->env.ckc >> 8;
1219     void *mem;
1220     hwaddr len = SAVE_AREA_SIZE;
1221
1222     mem = cpu_physical_memory_map(addr, &len, 1);
1223     if (!mem) {
1224         return -EFAULT;
1225     }
1226     if (len != SAVE_AREA_SIZE) {
1227         cpu_physical_memory_unmap(mem, len, 1, 0);
1228         return -EFAULT;
1229     }
1230
1231     if (store_arch) {
1232         cpu_physical_memory_write(offsetof(LowCore, ar_access_id), &ar_id, 1);
1233     }
1234     memcpy(mem, &cpu->env.fregs, 128);
1235     memcpy(mem + 128, &cpu->env.regs, 128);
1236     memcpy(mem + 256, &cpu->env.psw, 16);
1237     memcpy(mem + 280, &cpu->env.psa, 4);
1238     memcpy(mem + 284, &cpu->env.fpc, 4);
1239     memcpy(mem + 292, &cpu->env.todpr, 4);
1240     memcpy(mem + 296, &cpu->env.cputm, 8);
1241     memcpy(mem + 304, &ckc, 8);
1242     memcpy(mem + 320, &cpu->env.aregs, 64);
1243     memcpy(mem + 384, &cpu->env.cregs, 128);
1244
1245     cpu_physical_memory_unmap(mem, len, 1, len);
1246
1247     return 0;
1248 }
1249
1250 static void sigp_stop_and_store_status(void *arg)
1251 {
1252     SigpInfo *si = arg;
1253     struct kvm_s390_irq irq = {
1254         .type = KVM_S390_SIGP_STOP,
1255     };
1256
1257     /* disabled wait - sleeping in user space */
1258     if (s390_cpu_get_state(si->cpu) == CPU_STATE_OPERATING &&
1259         CPU(si->cpu)->halted) {
1260         s390_cpu_set_state(CPU_STATE_STOPPED, si->cpu);
1261     }
1262
1263     switch (s390_cpu_get_state(si->cpu)) {
1264     case CPU_STATE_OPERATING:
1265         si->cpu->env.sigp_order = SIGP_STOP_STORE_STATUS;
1266         kvm_s390_vcpu_interrupt(si->cpu, &irq);
1267         /* store will be performed when handling the stop intercept */
1268         break;
1269     case CPU_STATE_STOPPED:
1270         /* already stopped, just store the status */
1271         cpu_synchronize_state(CPU(si->cpu));
1272         kvm_s390_store_status(si->cpu, KVM_S390_STORE_STATUS_DEF_ADDR, true);
1273         break;
1274     }
1275     si->cc = SIGP_CC_ORDER_CODE_ACCEPTED;
1276 }
1277
1278 static void sigp_store_status_at_address(void *arg)
1279 {
1280     SigpInfo *si = arg;
1281     uint32_t address = si->param & 0x7ffffe00u;
1282
1283     /* cpu has to be stopped */
1284     if (s390_cpu_get_state(si->cpu) != CPU_STATE_STOPPED) {
1285         set_sigp_status(si, SIGP_STAT_INCORRECT_STATE);
1286         return;
1287     }
1288
1289     cpu_synchronize_state(CPU(si->cpu));
1290
1291     if (kvm_s390_store_status(si->cpu, address, false)) {
1292         set_sigp_status(si, SIGP_STAT_INVALID_PARAMETER);
1293         return;
1294     }
1295     si->cc = SIGP_CC_ORDER_CODE_ACCEPTED;
1296 }
1297
1298 static void sigp_restart(void *arg)
1299 {
1300     SigpInfo *si = arg;
1301     struct kvm_s390_irq irq = {
1302         .type = KVM_S390_RESTART,
1303     };
1304
1305     switch (s390_cpu_get_state(si->cpu)) {
1306     case CPU_STATE_STOPPED:
1307         /* the restart irq has to be delivered prior to any other pending irq */
1308         cpu_synchronize_state(CPU(si->cpu));
1309         do_restart_interrupt(&si->cpu->env);
1310         s390_cpu_set_state(CPU_STATE_OPERATING, si->cpu);
1311         break;
1312     case CPU_STATE_OPERATING:
1313         kvm_s390_vcpu_interrupt(si->cpu, &irq);
1314         break;
1315     }
1316     si->cc = SIGP_CC_ORDER_CODE_ACCEPTED;
1317 }
1318
1319 int kvm_s390_cpu_restart(S390CPU *cpu)
1320 {
1321     SigpInfo si = {
1322         .cpu = cpu,
1323     };
1324
1325     run_on_cpu(CPU(cpu), sigp_restart, &si);
1326     DPRINTF("DONE: KVM cpu restart: %p\n", &cpu->env);
1327     return 0;
1328 }
1329
1330 static void sigp_initial_cpu_reset(void *arg)
1331 {
1332     SigpInfo *si = arg;
1333     CPUState *cs = CPU(si->cpu);
1334     S390CPUClass *scc = S390_CPU_GET_CLASS(si->cpu);
1335
1336     cpu_synchronize_state(cs);
1337     scc->initial_cpu_reset(cs);
1338     cpu_synchronize_post_reset(cs);
1339     si->cc = SIGP_CC_ORDER_CODE_ACCEPTED;
1340 }
1341
1342 static void sigp_cpu_reset(void *arg)
1343 {
1344     SigpInfo *si = arg;
1345     CPUState *cs = CPU(si->cpu);
1346     S390CPUClass *scc = S390_CPU_GET_CLASS(si->cpu);
1347
1348     cpu_synchronize_state(cs);
1349     scc->cpu_reset(cs);
1350     cpu_synchronize_post_reset(cs);
1351     si->cc = SIGP_CC_ORDER_CODE_ACCEPTED;
1352 }
1353
1354 static void sigp_set_prefix(void *arg)
1355 {
1356     SigpInfo *si = arg;
1357     uint32_t addr = si->param & 0x7fffe000u;
1358
1359     cpu_synchronize_state(CPU(si->cpu));
1360
1361     if (!address_space_access_valid(&address_space_memory, addr,
1362                                     sizeof(struct LowCore), false)) {
1363         set_sigp_status(si, SIGP_STAT_INVALID_PARAMETER);
1364         return;
1365     }
1366
1367     /* cpu has to be stopped */
1368     if (s390_cpu_get_state(si->cpu) != CPU_STATE_STOPPED) {
1369         set_sigp_status(si, SIGP_STAT_INCORRECT_STATE);
1370         return;
1371     }
1372
1373     si->cpu->env.psa = addr;
1374     cpu_synchronize_post_init(CPU(si->cpu));
1375     si->cc = SIGP_CC_ORDER_CODE_ACCEPTED;
1376 }
1377
1378 static int handle_sigp_single_dst(S390CPU *dst_cpu, uint8_t order,
1379                                   uint64_t param, uint64_t *status_reg)
1380 {
1381     SigpInfo si = {
1382         .cpu = dst_cpu,
1383         .param = param,
1384         .status_reg = status_reg,
1385     };
1386
1387     /* cpu available? */
1388     if (dst_cpu == NULL) {
1389         return SIGP_CC_NOT_OPERATIONAL;
1390     }
1391
1392     /* only resets can break pending orders */
1393     if (dst_cpu->env.sigp_order != 0 &&
1394         order != SIGP_CPU_RESET &&
1395         order != SIGP_INITIAL_CPU_RESET) {
1396         return SIGP_CC_BUSY;
1397     }
1398
1399     switch (order) {
1400     case SIGP_START:
1401         run_on_cpu(CPU(dst_cpu), sigp_start, &si);
1402         break;
1403     case SIGP_STOP:
1404         run_on_cpu(CPU(dst_cpu), sigp_stop, &si);
1405         break;
1406     case SIGP_RESTART:
1407         run_on_cpu(CPU(dst_cpu), sigp_restart, &si);
1408         break;
1409     case SIGP_STOP_STORE_STATUS:
1410         run_on_cpu(CPU(dst_cpu), sigp_stop_and_store_status, &si);
1411         break;
1412     case SIGP_STORE_STATUS_ADDR:
1413         run_on_cpu(CPU(dst_cpu), sigp_store_status_at_address, &si);
1414         break;
1415     case SIGP_SET_PREFIX:
1416         run_on_cpu(CPU(dst_cpu), sigp_set_prefix, &si);
1417         break;
1418     case SIGP_INITIAL_CPU_RESET:
1419         run_on_cpu(CPU(dst_cpu), sigp_initial_cpu_reset, &si);
1420         break;
1421     case SIGP_CPU_RESET:
1422         run_on_cpu(CPU(dst_cpu), sigp_cpu_reset, &si);
1423         break;
1424     default:
1425         DPRINTF("KVM: unknown SIGP: 0x%x\n", order);
1426         set_sigp_status(&si, SIGP_STAT_INVALID_ORDER);
1427     }
1428
1429     return si.cc;
1430 }
1431
1432 static int sigp_set_architecture(S390CPU *cpu, uint32_t param,
1433                                  uint64_t *status_reg)
1434 {
1435     CPUState *cur_cs;
1436     S390CPU *cur_cpu;
1437
1438     /* due to the BQL, we are the only active cpu */
1439     CPU_FOREACH(cur_cs) {
1440         cur_cpu = S390_CPU(cur_cs);
1441         if (cur_cpu->env.sigp_order != 0) {
1442             return SIGP_CC_BUSY;
1443         }
1444         cpu_synchronize_state(cur_cs);
1445         /* all but the current one have to be stopped */
1446         if (cur_cpu != cpu &&
1447             s390_cpu_get_state(cur_cpu) != CPU_STATE_STOPPED) {
1448             *status_reg &= 0xffffffff00000000ULL;
1449             *status_reg |= SIGP_STAT_INCORRECT_STATE;
1450             return SIGP_CC_STATUS_STORED;
1451         }
1452     }
1453
1454     switch (param & 0xff) {
1455     case SIGP_MODE_ESA_S390:
1456         /* not supported */
1457         return SIGP_CC_NOT_OPERATIONAL;
1458     case SIGP_MODE_Z_ARCH_TRANS_ALL_PSW:
1459     case SIGP_MODE_Z_ARCH_TRANS_CUR_PSW:
1460         CPU_FOREACH(cur_cs) {
1461             cur_cpu = S390_CPU(cur_cs);
1462             cur_cpu->env.pfault_token = -1UL;
1463         }
1464         break;
1465     default:
1466         *status_reg &= 0xffffffff00000000ULL;
1467         *status_reg |= SIGP_STAT_INVALID_PARAMETER;
1468         return SIGP_CC_STATUS_STORED;
1469     }
1470
1471     return SIGP_CC_ORDER_CODE_ACCEPTED;
1472 }
1473
1474 #define SIGP_ORDER_MASK 0x000000ff
1475
1476 static int handle_sigp(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1)
1477 {
1478     CPUS390XState *env = &cpu->env;
1479     const uint8_t r1 = ipa1 >> 4;
1480     const uint8_t r3 = ipa1 & 0x0f;
1481     int ret;
1482     uint8_t order;
1483     uint64_t *status_reg;
1484     uint64_t param;
1485     S390CPU *dst_cpu = NULL;
1486
1487     cpu_synchronize_state(CPU(cpu));
1488
1489     /* get order code */
1490     order = decode_basedisp_rs(env, run->s390_sieic.ipb) & SIGP_ORDER_MASK;
1491     status_reg = &env->regs[r1];
1492     param = (r1 % 2) ? env->regs[r1] : env->regs[r1 + 1];
1493
1494     switch (order) {
1495     case SIGP_SET_ARCH:
1496         ret = sigp_set_architecture(cpu, param, status_reg);
1497         break;
1498     default:
1499         /* all other sigp orders target a single vcpu */
1500         dst_cpu = s390_cpu_addr2state(env->regs[r3]);
1501         ret = handle_sigp_single_dst(dst_cpu, order, param, status_reg);
1502     }
1503
1504     trace_kvm_sigp_finished(order, CPU(cpu)->cpu_index,
1505                             dst_cpu ? CPU(dst_cpu)->cpu_index : -1, ret);
1506
1507     if (ret >= 0) {
1508         setcc(cpu, ret);
1509         return 0;
1510     }
1511
1512     return ret;
1513 }
1514
1515 static int handle_instruction(S390CPU *cpu, struct kvm_run *run)
1516 {
1517     unsigned int ipa0 = (run->s390_sieic.ipa & 0xff00);
1518     uint8_t ipa1 = run->s390_sieic.ipa & 0x00ff;
1519     int r = -1;
1520
1521     DPRINTF("handle_instruction 0x%x 0x%x\n",
1522             run->s390_sieic.ipa, run->s390_sieic.ipb);
1523     switch (ipa0) {
1524     case IPA0_B2:
1525         r = handle_b2(cpu, run, ipa1);
1526         break;
1527     case IPA0_B9:
1528         r = handle_b9(cpu, run, ipa1);
1529         break;
1530     case IPA0_EB:
1531         r = handle_eb(cpu, run, run->s390_sieic.ipb & 0xff);
1532         break;
1533     case IPA0_E3:
1534         r = handle_e3(cpu, run, run->s390_sieic.ipb & 0xff);
1535         break;
1536     case IPA0_DIAG:
1537         r = handle_diag(cpu, run, run->s390_sieic.ipb);
1538         break;
1539     case IPA0_SIGP:
1540         r = handle_sigp(cpu, run, ipa1);
1541         break;
1542     }
1543
1544     if (r < 0) {
1545         r = 0;
1546         enter_pgmcheck(cpu, 0x0001);
1547     }
1548
1549     return r;
1550 }
1551
1552 static bool is_special_wait_psw(CPUState *cs)
1553 {
1554     /* signal quiesce */
1555     return cs->kvm_run->psw_addr == 0xfffUL;
1556 }
1557
1558 static void guest_panicked(void)
1559 {
1560     qapi_event_send_guest_panicked(GUEST_PANIC_ACTION_PAUSE,
1561                                    &error_abort);
1562     vm_stop(RUN_STATE_GUEST_PANICKED);
1563 }
1564
1565 static void unmanageable_intercept(S390CPU *cpu, const char *str, int pswoffset)
1566 {
1567     CPUState *cs = CPU(cpu);
1568
1569     error_report("Unmanageable %s! CPU%i new PSW: 0x%016lx:%016lx",
1570                  str, cs->cpu_index, ldq_phys(cs->as, cpu->env.psa + pswoffset),
1571                  ldq_phys(cs->as, cpu->env.psa + pswoffset + 8));
1572     s390_cpu_halt(cpu);
1573     guest_panicked();
1574 }
1575
1576 static int handle_intercept(S390CPU *cpu)
1577 {
1578     CPUState *cs = CPU(cpu);
1579     struct kvm_run *run = cs->kvm_run;
1580     int icpt_code = run->s390_sieic.icptcode;
1581     int r = 0;
1582
1583     DPRINTF("intercept: 0x%x (at 0x%lx)\n", icpt_code,
1584             (long)cs->kvm_run->psw_addr);
1585     switch (icpt_code) {
1586         case ICPT_INSTRUCTION:
1587             r = handle_instruction(cpu, run);
1588             break;
1589         case ICPT_PROGRAM:
1590             unmanageable_intercept(cpu, "program interrupt",
1591                                    offsetof(LowCore, program_new_psw));
1592             r = EXCP_HALTED;
1593             break;
1594         case ICPT_EXT_INT:
1595             unmanageable_intercept(cpu, "external interrupt",
1596                                    offsetof(LowCore, external_new_psw));
1597             r = EXCP_HALTED;
1598             break;
1599         case ICPT_WAITPSW:
1600             /* disabled wait, since enabled wait is handled in kernel */
1601             cpu_synchronize_state(cs);
1602             if (s390_cpu_halt(cpu) == 0) {
1603                 if (is_special_wait_psw(cs)) {
1604                     qemu_system_shutdown_request();
1605                 } else {
1606                     guest_panicked();
1607                 }
1608             }
1609             r = EXCP_HALTED;
1610             break;
1611         case ICPT_CPU_STOP:
1612             if (s390_cpu_set_state(CPU_STATE_STOPPED, cpu) == 0) {
1613                 qemu_system_shutdown_request();
1614             }
1615             if (cpu->env.sigp_order == SIGP_STOP_STORE_STATUS) {
1616                 kvm_s390_store_status(cpu, KVM_S390_STORE_STATUS_DEF_ADDR,
1617                                       true);
1618             }
1619             cpu->env.sigp_order = 0;
1620             r = EXCP_HALTED;
1621             break;
1622         case ICPT_SOFT_INTERCEPT:
1623             fprintf(stderr, "KVM unimplemented icpt SOFT\n");
1624             exit(1);
1625             break;
1626         case ICPT_IO:
1627             fprintf(stderr, "KVM unimplemented icpt IO\n");
1628             exit(1);
1629             break;
1630         default:
1631             fprintf(stderr, "Unknown intercept code: %d\n", icpt_code);
1632             exit(1);
1633             break;
1634     }
1635
1636     return r;
1637 }
1638
1639 static int handle_tsch(S390CPU *cpu)
1640 {
1641     CPUState *cs = CPU(cpu);
1642     struct kvm_run *run = cs->kvm_run;
1643     int ret;
1644
1645     cpu_synchronize_state(cs);
1646
1647     ret = ioinst_handle_tsch(cpu, cpu->env.regs[1], run->s390_tsch.ipb);
1648     if (ret < 0) {
1649         /*
1650          * Failure.
1651          * If an I/O interrupt had been dequeued, we have to reinject it.
1652          */
1653         if (run->s390_tsch.dequeued) {
1654             kvm_s390_io_interrupt(run->s390_tsch.subchannel_id,
1655                                   run->s390_tsch.subchannel_nr,
1656                                   run->s390_tsch.io_int_parm,
1657                                   run->s390_tsch.io_int_word);
1658         }
1659         ret = 0;
1660     }
1661     return ret;
1662 }
1663
1664 static int kvm_arch_handle_debug_exit(S390CPU *cpu)
1665 {
1666     CPUState *cs = CPU(cpu);
1667     struct kvm_run *run = cs->kvm_run;
1668
1669     int ret = 0;
1670     struct kvm_debug_exit_arch *arch_info = &run->debug.arch;
1671
1672     switch (arch_info->type) {
1673     case KVM_HW_WP_WRITE:
1674         if (find_hw_breakpoint(arch_info->addr, -1, arch_info->type)) {
1675             cs->watchpoint_hit = &hw_watchpoint;
1676             hw_watchpoint.vaddr = arch_info->addr;
1677             hw_watchpoint.flags = BP_MEM_WRITE;
1678             ret = EXCP_DEBUG;
1679         }
1680         break;
1681     case KVM_HW_BP:
1682         if (find_hw_breakpoint(arch_info->addr, -1, arch_info->type)) {
1683             ret = EXCP_DEBUG;
1684         }
1685         break;
1686     case KVM_SINGLESTEP:
1687         if (cs->singlestep_enabled) {
1688             ret = EXCP_DEBUG;
1689         }
1690         break;
1691     default:
1692         ret = -ENOSYS;
1693     }
1694
1695     return ret;
1696 }
1697
1698 int kvm_arch_handle_exit(CPUState *cs, struct kvm_run *run)
1699 {
1700     S390CPU *cpu = S390_CPU(cs);
1701     int ret = 0;
1702
1703     switch (run->exit_reason) {
1704         case KVM_EXIT_S390_SIEIC:
1705             ret = handle_intercept(cpu);
1706             break;
1707         case KVM_EXIT_S390_RESET:
1708             s390_reipl_request();
1709             break;
1710         case KVM_EXIT_S390_TSCH:
1711             ret = handle_tsch(cpu);
1712             break;
1713         case KVM_EXIT_DEBUG:
1714             ret = kvm_arch_handle_debug_exit(cpu);
1715             break;
1716         default:
1717             fprintf(stderr, "Unknown KVM exit: %d\n", run->exit_reason);
1718             break;
1719     }
1720
1721     if (ret == 0) {
1722         ret = EXCP_INTERRUPT;
1723     }
1724     return ret;
1725 }
1726
1727 bool kvm_arch_stop_on_emulation_error(CPUState *cpu)
1728 {
1729     return true;
1730 }
1731
1732 int kvm_arch_on_sigbus_vcpu(CPUState *cpu, int code, void *addr)
1733 {
1734     return 1;
1735 }
1736
1737 int kvm_arch_on_sigbus(int code, void *addr)
1738 {
1739     return 1;
1740 }
1741
1742 void kvm_s390_io_interrupt(uint16_t subchannel_id,
1743                            uint16_t subchannel_nr, uint32_t io_int_parm,
1744                            uint32_t io_int_word)
1745 {
1746     struct kvm_s390_irq irq = {
1747         .u.io.subchannel_id = subchannel_id,
1748         .u.io.subchannel_nr = subchannel_nr,
1749         .u.io.io_int_parm = io_int_parm,
1750         .u.io.io_int_word = io_int_word,
1751     };
1752
1753     if (io_int_word & IO_INT_WORD_AI) {
1754         irq.type = KVM_S390_INT_IO(1, 0, 0, 0);
1755     } else {
1756         irq.type = ((subchannel_id & 0xff00) << 24) |
1757             ((subchannel_id & 0x00060) << 22) | (subchannel_nr << 16);
1758     }
1759     kvm_s390_floating_interrupt(&irq);
1760 }
1761
1762 void kvm_s390_crw_mchk(void)
1763 {
1764     struct kvm_s390_irq irq = {
1765         .type = KVM_S390_MCHK,
1766         .u.mchk.cr14 = 1 << 28,
1767         .u.mchk.mcic = 0x00400f1d40330000ULL,
1768     };
1769     kvm_s390_floating_interrupt(&irq);
1770 }
1771
1772 void kvm_s390_enable_css_support(S390CPU *cpu)
1773 {
1774     int r;
1775
1776     /* Activate host kernel channel subsystem support. */
1777     r = kvm_vcpu_enable_cap(CPU(cpu), KVM_CAP_S390_CSS_SUPPORT, 0);
1778     assert(r == 0);
1779 }
1780
1781 void kvm_arch_init_irq_routing(KVMState *s)
1782 {
1783     /*
1784      * Note that while irqchip capabilities generally imply that cpustates
1785      * are handled in-kernel, it is not true for s390 (yet); therefore, we
1786      * have to override the common code kvm_halt_in_kernel_allowed setting.
1787      */
1788     if (kvm_check_extension(s, KVM_CAP_IRQ_ROUTING)) {
1789         kvm_gsi_routing_allowed = true;
1790         kvm_halt_in_kernel_allowed = false;
1791     }
1792 }
1793
1794 int kvm_s390_assign_subch_ioeventfd(EventNotifier *notifier, uint32_t sch,
1795                                     int vq, bool assign)
1796 {
1797     struct kvm_ioeventfd kick = {
1798         .flags = KVM_IOEVENTFD_FLAG_VIRTIO_CCW_NOTIFY |
1799         KVM_IOEVENTFD_FLAG_DATAMATCH,
1800         .fd = event_notifier_get_fd(notifier),
1801         .datamatch = vq,
1802         .addr = sch,
1803         .len = 8,
1804     };
1805     if (!kvm_check_extension(kvm_state, KVM_CAP_IOEVENTFD)) {
1806         return -ENOSYS;
1807     }
1808     if (!assign) {
1809         kick.flags |= KVM_IOEVENTFD_FLAG_DEASSIGN;
1810     }
1811     return kvm_vm_ioctl(kvm_state, KVM_IOEVENTFD, &kick);
1812 }
1813
1814 int kvm_s390_get_memslot_count(KVMState *s)
1815 {
1816     return kvm_check_extension(s, KVM_CAP_NR_MEMSLOTS);
1817 }
1818
1819 int kvm_s390_set_cpu_state(S390CPU *cpu, uint8_t cpu_state)
1820 {
1821     struct kvm_mp_state mp_state = {};
1822     int ret;
1823
1824     /* the kvm part might not have been initialized yet */
1825     if (CPU(cpu)->kvm_state == NULL) {
1826         return 0;
1827     }
1828
1829     switch (cpu_state) {
1830     case CPU_STATE_STOPPED:
1831         mp_state.mp_state = KVM_MP_STATE_STOPPED;
1832         break;
1833     case CPU_STATE_CHECK_STOP:
1834         mp_state.mp_state = KVM_MP_STATE_CHECK_STOP;
1835         break;
1836     case CPU_STATE_OPERATING:
1837         mp_state.mp_state = KVM_MP_STATE_OPERATING;
1838         break;
1839     case CPU_STATE_LOAD:
1840         mp_state.mp_state = KVM_MP_STATE_LOAD;
1841         break;
1842     default:
1843         error_report("Requested CPU state is not a valid S390 CPU state: %u",
1844                      cpu_state);
1845         exit(1);
1846     }
1847
1848     ret = kvm_vcpu_ioctl(CPU(cpu), KVM_SET_MP_STATE, &mp_state);
1849     if (ret) {
1850         trace_kvm_failed_cpu_state_set(CPU(cpu)->cpu_index, cpu_state,
1851                                        strerror(-ret));
1852     }
1853
1854     return ret;
1855 }
1856
1857 int kvm_arch_fixup_msi_route(struct kvm_irq_routing_entry *route,
1858                               uint64_t address, uint32_t data)
1859 {
1860     S390PCIBusDevice *pbdev;
1861     uint32_t fid = data >> ZPCI_MSI_VEC_BITS;
1862     uint32_t vec = data & ZPCI_MSI_VEC_MASK;
1863
1864     pbdev = s390_pci_find_dev_by_fid(fid);
1865     if (!pbdev) {
1866         DPRINTF("add_msi_route no dev\n");
1867         return -ENODEV;
1868     }
1869
1870     pbdev->routes.adapter.ind_offset = vec;
1871
1872     route->type = KVM_IRQ_ROUTING_S390_ADAPTER;
1873     route->flags = 0;
1874     route->u.adapter.summary_addr = pbdev->routes.adapter.summary_addr;
1875     route->u.adapter.ind_addr = pbdev->routes.adapter.ind_addr;
1876     route->u.adapter.summary_offset = pbdev->routes.adapter.summary_offset;
1877     route->u.adapter.ind_offset = pbdev->routes.adapter.ind_offset;
1878     route->u.adapter.adapter_id = pbdev->routes.adapter.adapter_id;
1879     return 0;
1880 }