target/s390x/machine.c

   1 /*
   2  * S390x machine definitions and functions
   3  *
   4  * Copyright IBM Corp. 2014, 2018
   5  *
   6  * Authors:
   7  *   Thomas Huth <thuth@linux.vnet.ibm.com>
   8  *   Christian Borntraeger <borntraeger@de.ibm.com>
   9  *   Jason J. Herne <jjherne@us.ibm.com>
  10  *
  11  * This work is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License as published
  13  * by the Free Software Foundation; either version 2 of the License,
  14  * or (at your option) any later version.
  15  */
  16
  17 #include "qemu/osdep.h"
  18 #include "cpu.h"
  19 #include "internal.h"
  20 #include "kvm_s390x.h"
  21 #include "migration/vmstate.h"
  22 #include "tcg_s390x.h"
  23 #include "sysemu/kvm.h"
  24 #include "sysemu/tcg.h"
  25
  26 static int cpu_post_load(void *opaque, int version_id)
  27 {
  28     S390CPU *cpu = opaque;
  29
  30     /*
  31      * As the cpu state is pushed to kvm via kvm_set_mp_state rather
  32      * than via cpu_synchronize_state, we need update kvm here.
  33      */
  34     if (kvm_enabled()) {
  35         kvm_s390_set_cpu_state(cpu, cpu->env.cpu_state);
  36         return kvm_s390_vcpu_interrupt_post_load(cpu);
  37     }
  38
  39     if (tcg_enabled()) {
  40         /* Rearm the CKC timer if necessary */
  41         tcg_s390_tod_updated(CPU(cpu), RUN_ON_CPU_NULL);
  42     }
  43
  44     return 0;
  45 }
  46
  47 static int cpu_pre_save(void *opaque)
  48 {
  49     S390CPU *cpu = opaque;
  50
  51     if (kvm_enabled()) {
  52         kvm_s390_vcpu_interrupt_pre_save(cpu);
  53     }
  54
  55     return 0;
  56 }
  57
  58 static inline bool fpu_needed(void *opaque)
  59 {
  60     /* This looks odd, but we might want to NOT transfer fprs in the future */
  61     return true;
  62 }
  63
  64 static const VMStateDescription vmstate_fpu = {
  65     .name = "cpu/fpu",
  66     .version_id = 1,
  67     .minimum_version_id = 1,
  68     .needed = fpu_needed,
  69     .fields = (VMStateField[]) {
  70         VMSTATE_UINT64(env.vregs[0][0], S390CPU),
  71         VMSTATE_UINT64(env.vregs[1][0], S390CPU),
  72         VMSTATE_UINT64(env.vregs[2][0], S390CPU),
  73         VMSTATE_UINT64(env.vregs[3][0], S390CPU),
  74         VMSTATE_UINT64(env.vregs[4][0], S390CPU),
  75         VMSTATE_UINT64(env.vregs[5][0], S390CPU),
  76         VMSTATE_UINT64(env.vregs[6][0], S390CPU),
  77         VMSTATE_UINT64(env.vregs[7][0], S390CPU),
  78         VMSTATE_UINT64(env.vregs[8][0], S390CPU),
  79         VMSTATE_UINT64(env.vregs[9][0], S390CPU),
  80         VMSTATE_UINT64(env.vregs[10][0], S390CPU),
  81         VMSTATE_UINT64(env.vregs[11][0], S390CPU),
  82         VMSTATE_UINT64(env.vregs[12][0], S390CPU),
  83         VMSTATE_UINT64(env.vregs[13][0], S390CPU),
  84         VMSTATE_UINT64(env.vregs[14][0], S390CPU),
  85         VMSTATE_UINT64(env.vregs[15][0], S390CPU),
  86         VMSTATE_UINT32(env.fpc, S390CPU),
  87         VMSTATE_END_OF_LIST()
  88     }
  89 };
  90
  91 static bool vregs_needed(void *opaque)
  92 {
  93     return s390_has_feat(S390_FEAT_VECTOR);
  94 }
  95
  96 static const VMStateDescription vmstate_vregs = {
  97     .name = "cpu/vregs",
  98     .version_id = 1,
  99     .minimum_version_id = 1,
 100     .needed = vregs_needed,
 101     .fields = (VMStateField[]) {
 102         /* vregs[0][0] -> vregs[15][0] and fregs are overlays */
 103         VMSTATE_UINT64(env.vregs[16][0], S390CPU),
 104         VMSTATE_UINT64(env.vregs[17][0], S390CPU),
 105         VMSTATE_UINT64(env.vregs[18][0], S390CPU),
 106         VMSTATE_UINT64(env.vregs[19][0], S390CPU),
 107         VMSTATE_UINT64(env.vregs[20][0], S390CPU),
 108         VMSTATE_UINT64(env.vregs[21][0], S390CPU),
 109         VMSTATE_UINT64(env.vregs[22][0], S390CPU),
 110         VMSTATE_UINT64(env.vregs[23][0], S390CPU),
 111         VMSTATE_UINT64(env.vregs[24][0], S390CPU),
 112         VMSTATE_UINT64(env.vregs[25][0], S390CPU),
 113         VMSTATE_UINT64(env.vregs[26][0], S390CPU),
 114         VMSTATE_UINT64(env.vregs[27][0], S390CPU),
 115         VMSTATE_UINT64(env.vregs[28][0], S390CPU),
 116         VMSTATE_UINT64(env.vregs[29][0], S390CPU),
 117         VMSTATE_UINT64(env.vregs[30][0], S390CPU),
 118         VMSTATE_UINT64(env.vregs[31][0], S390CPU),
 119         VMSTATE_UINT64(env.vregs[0][1], S390CPU),
 120         VMSTATE_UINT64(env.vregs[1][1], S390CPU),
 121         VMSTATE_UINT64(env.vregs[2][1], S390CPU),
 122         VMSTATE_UINT64(env.vregs[3][1], S390CPU),
 123         VMSTATE_UINT64(env.vregs[4][1], S390CPU),
 124         VMSTATE_UINT64(env.vregs[5][1], S390CPU),
 125         VMSTATE_UINT64(env.vregs[6][1], S390CPU),
 126         VMSTATE_UINT64(env.vregs[7][1], S390CPU),
 127         VMSTATE_UINT64(env.vregs[8][1], S390CPU),
 128         VMSTATE_UINT64(env.vregs[9][1], S390CPU),
 129         VMSTATE_UINT64(env.vregs[10][1], S390CPU),
 130         VMSTATE_UINT64(env.vregs[11][1], S390CPU),
 131         VMSTATE_UINT64(env.vregs[12][1], S390CPU),
 132         VMSTATE_UINT64(env.vregs[13][1], S390CPU),
 133         VMSTATE_UINT64(env.vregs[14][1], S390CPU),
 134         VMSTATE_UINT64(env.vregs[15][1], S390CPU),
 135         VMSTATE_UINT64(env.vregs[16][1], S390CPU),
 136         VMSTATE_UINT64(env.vregs[17][1], S390CPU),
 137         VMSTATE_UINT64(env.vregs[18][1], S390CPU),
 138         VMSTATE_UINT64(env.vregs[19][1], S390CPU),
 139         VMSTATE_UINT64(env.vregs[20][1], S390CPU),
 140         VMSTATE_UINT64(env.vregs[21][1], S390CPU),
 141         VMSTATE_UINT64(env.vregs[22][1], S390CPU),
 142         VMSTATE_UINT64(env.vregs[23][1], S390CPU),
 143         VMSTATE_UINT64(env.vregs[24][1], S390CPU),
 144         VMSTATE_UINT64(env.vregs[25][1], S390CPU),
 145         VMSTATE_UINT64(env.vregs[26][1], S390CPU),
 146         VMSTATE_UINT64(env.vregs[27][1], S390CPU),
 147         VMSTATE_UINT64(env.vregs[28][1], S390CPU),
 148         VMSTATE_UINT64(env.vregs[29][1], S390CPU),
 149         VMSTATE_UINT64(env.vregs[30][1], S390CPU),
 150         VMSTATE_UINT64(env.vregs[31][1], S390CPU),
 151         VMSTATE_END_OF_LIST()
 152     }
 153 };
 154
 155 static bool riccb_needed(void *opaque)
 156 {
 157     return s390_has_feat(S390_FEAT_RUNTIME_INSTRUMENTATION);
 158 }
 159
 160 const VMStateDescription vmstate_riccb = {
 161     .name = "cpu/riccb",
 162     .version_id = 1,
 163     .minimum_version_id = 1,
 164     .needed = riccb_needed,
 165     .fields = (VMStateField[]) {
 166         VMSTATE_UINT8_ARRAY(env.riccb, S390CPU, 64),
 167         VMSTATE_END_OF_LIST()
 168     }
 169 };
 170
 171 static bool exval_needed(void *opaque)
 172 {
 173     S390CPU *cpu = opaque;
 174     return cpu->env.ex_value != 0;
 175 }
 176
 177 const VMStateDescription vmstate_exval = {
 178     .name = "cpu/exval",
 179     .version_id = 1,
 180     .minimum_version_id = 1,
 181     .needed = exval_needed,
 182     .fields = (VMStateField[]) {
 183         VMSTATE_UINT64(env.ex_value, S390CPU),
 184         VMSTATE_END_OF_LIST()
 185     }
 186 };
 187
 188 static bool gscb_needed(void *opaque)
 189 {
 190     return s390_has_feat(S390_FEAT_GUARDED_STORAGE);
 191 }
 192
 193 const VMStateDescription vmstate_gscb = {
 194     .name = "cpu/gscb",
 195     .version_id = 1,
 196     .minimum_version_id = 1,
 197     .needed = gscb_needed,
 198     .fields = (VMStateField[]) {
 199         VMSTATE_UINT64_ARRAY(env.gscb, S390CPU, 4),
 200         VMSTATE_END_OF_LIST()
 201         }
 202 };
 203
 204 static bool bpbc_needed(void *opaque)
 205 {
 206     return s390_has_feat(S390_FEAT_BPB);
 207 }
 208
 209 const VMStateDescription vmstate_bpbc = {
 210     .name = "cpu/bpbc",
 211     .version_id = 1,
 212     .minimum_version_id = 1,
 213     .needed = bpbc_needed,
 214     .fields = (VMStateField[]) {
 215         VMSTATE_BOOL(env.bpbc, S390CPU),
 216         VMSTATE_END_OF_LIST()
 217     }
 218 };
 219
 220 static bool etoken_needed(void *opaque)
 221 {
 222     return s390_has_feat(S390_FEAT_ETOKEN);
 223 }
 224
 225 const VMStateDescription vmstate_etoken = {
 226     .name = "cpu/etoken",
 227     .version_id = 1,
 228     .minimum_version_id = 1,
 229     .needed = etoken_needed,
 230     .fields = (VMStateField[]) {
 231         VMSTATE_UINT64(env.etoken, S390CPU),
 232         VMSTATE_UINT64(env.etoken_extension, S390CPU),
 233         VMSTATE_END_OF_LIST()
 234     }
 235 };
 236
 237 const VMStateDescription vmstate_s390_cpu = {
 238     .name = "cpu",
 239     .post_load = cpu_post_load,
 240     .pre_save = cpu_pre_save,
 241     .version_id = 4,
 242     .minimum_version_id = 3,
 243     .fields      = (VMStateField[]) {
 244         VMSTATE_UINT64_ARRAY(env.regs, S390CPU, 16),
 245         VMSTATE_UINT64(env.psw.mask, S390CPU),
 246         VMSTATE_UINT64(env.psw.addr, S390CPU),
 247         VMSTATE_UINT64(env.psa, S390CPU),
 248         VMSTATE_UINT32(env.todpr, S390CPU),
 249         VMSTATE_UINT64(env.pfault_token, S390CPU),
 250         VMSTATE_UINT64(env.pfault_compare, S390CPU),
 251         VMSTATE_UINT64(env.pfault_select, S390CPU),
 252         VMSTATE_UINT64(env.cputm, S390CPU),
 253         VMSTATE_UINT64(env.ckc, S390CPU),
 254         VMSTATE_UINT64(env.gbea, S390CPU),
 255         VMSTATE_UINT64(env.pp, S390CPU),
 256         VMSTATE_UINT32_ARRAY(env.aregs, S390CPU, 16),
 257         VMSTATE_UINT64_ARRAY(env.cregs, S390CPU, 16),
 258         VMSTATE_UINT8(env.cpu_state, S390CPU),
 259         VMSTATE_UINT8(env.sigp_order, S390CPU),
 260         VMSTATE_UINT32_V(irqstate_saved_size, S390CPU, 4),
 261         VMSTATE_VBUFFER_UINT32(irqstate, S390CPU, 4, NULL,
 262                                irqstate_saved_size),
 263         VMSTATE_END_OF_LIST()
 264     },
 265     .subsections = (const VMStateDescription*[]) {
 266         &vmstate_fpu,
 267         &vmstate_vregs,
 268         &vmstate_riccb,
 269         &vmstate_exval,
 270         &vmstate_gscb,
 271         &vmstate_bpbc,
 272         &vmstate_etoken,
 273         NULL
 274     },
 275 };