arch/powerpc/kvm/book3s_hv_nestedv2.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Copyright 2023 Jordan Niethe, IBM Corp. <jniethe5@gmail.com>
   4  *
   5  * Authors:
   6  *    Jordan Niethe <jniethe5@gmail.com>
   7  *
   8  * Description: KVM functions specific to running on Book 3S
   9  * processors as a NESTEDv2 guest.
  10  *
  11  */
  12
  13 #include "linux/blk-mq.h"
  14 #include "linux/console.h"
  15 #include "linux/gfp_types.h"
  16 #include "linux/signal.h"
  17 #include <linux/kernel.h>
  18 #include <linux/kvm_host.h>
  19 #include <linux/pgtable.h>
  20
  21 #include <asm/kvm_ppc.h>
  22 #include <asm/kvm_book3s.h>
  23 #include <asm/hvcall.h>
  24 #include <asm/pgalloc.h>
  25 #include <asm/reg.h>
  26 #include <asm/plpar_wrappers.h>
  27 #include <asm/guest-state-buffer.h>
  28 #include "trace_hv.h"
  29
  30 struct static_key_false __kvmhv_is_nestedv2 __read_mostly;
  31 EXPORT_SYMBOL_GPL(__kvmhv_is_nestedv2);
  32
  33
  34 static size_t
  35 gs_msg_ops_kvmhv_nestedv2_config_get_size(struct kvmppc_gs_msg *gsm)
  36 {
  37         u16 ids[] = {
  38                 KVMPPC_GSID_RUN_OUTPUT_MIN_SIZE,
  39                 KVMPPC_GSID_RUN_INPUT,
  40                 KVMPPC_GSID_RUN_OUTPUT,
  41
  42         };
  43         size_t size = 0;
  44
  45         for (int i = 0; i < ARRAY_SIZE(ids); i++)
  46                 size += kvmppc_gse_total_size(kvmppc_gsid_size(ids[i]));
  47         return size;
  48 }
  49
  50 static int
  51 gs_msg_ops_kvmhv_nestedv2_config_fill_info(struct kvmppc_gs_buff *gsb,
  52                                            struct kvmppc_gs_msg *gsm)
  53 {
  54         struct kvmhv_nestedv2_config *cfg;
  55         int rc;
  56
  57         cfg = gsm->data;
  58
  59         if (kvmppc_gsm_includes(gsm, KVMPPC_GSID_RUN_OUTPUT_MIN_SIZE)) {
  60                 rc = kvmppc_gse_put_u64(gsb, KVMPPC_GSID_RUN_OUTPUT_MIN_SIZE,
  61                                         cfg->vcpu_run_output_size);
  62                 if (rc < 0)
  63                         return rc;
  64         }
  65
  66         if (kvmppc_gsm_includes(gsm, KVMPPC_GSID_RUN_INPUT)) {
  67                 rc = kvmppc_gse_put_buff_info(gsb, KVMPPC_GSID_RUN_INPUT,
  68                                               cfg->vcpu_run_input_cfg);
  69                 if (rc < 0)
  70                         return rc;
  71         }
  72
  73         if (kvmppc_gsm_includes(gsm, KVMPPC_GSID_RUN_OUTPUT)) {
  74                 rc = kvmppc_gse_put_buff_info(gsb, KVMPPC_GSID_RUN_OUTPUT,
  75                                               cfg->vcpu_run_output_cfg);
  76                 if (rc < 0)
  77                         return rc;
  78         }
  79
  80         return 0;
  81 }
  82
  83 static int
  84 gs_msg_ops_kvmhv_nestedv2_config_refresh_info(struct kvmppc_gs_msg *gsm,
  85                                               struct kvmppc_gs_buff *gsb)
  86 {
  87         struct kvmhv_nestedv2_config *cfg;
  88         struct kvmppc_gs_parser gsp = { 0 };
  89         struct kvmppc_gs_elem *gse;
  90         int rc;
  91
  92         cfg = gsm->data;
  93
  94         rc = kvmppc_gse_parse(&gsp, gsb);
  95         if (rc < 0)
  96                 return rc;
  97
  98         gse = kvmppc_gsp_lookup(&gsp, KVMPPC_GSID_RUN_OUTPUT_MIN_SIZE);
  99         if (gse)
 100                 cfg->vcpu_run_output_size = kvmppc_gse_get_u64(gse);
 101         return 0;
 102 }
 103
 104 static struct kvmppc_gs_msg_ops config_msg_ops = {
 105         .get_size = gs_msg_ops_kvmhv_nestedv2_config_get_size,
 106         .fill_info = gs_msg_ops_kvmhv_nestedv2_config_fill_info,
 107         .refresh_info = gs_msg_ops_kvmhv_nestedv2_config_refresh_info,
 108 };
 109
 110 static size_t gs_msg_ops_vcpu_get_size(struct kvmppc_gs_msg *gsm)
 111 {
 112         struct kvmppc_gs_bitmap gsbm = { 0 };
 113         size_t size = 0;
 114         u16 iden;
 115
 116         kvmppc_gsbm_fill(&gsbm);
 117         kvmppc_gsbm_for_each(&gsbm, iden)
 118         {
 119                 switch (iden) {
 120                 case KVMPPC_GSID_HOST_STATE_SIZE:
 121                 case KVMPPC_GSID_RUN_OUTPUT_MIN_SIZE:
 122                 case KVMPPC_GSID_PARTITION_TABLE:
 123                 case KVMPPC_GSID_PROCESS_TABLE:
 124                 case KVMPPC_GSID_RUN_INPUT:
 125                 case KVMPPC_GSID_RUN_OUTPUT:
 126                         break;
 127                 default:
 128                         size += kvmppc_gse_total_size(kvmppc_gsid_size(iden));
 129                 }
 130         }
 131         return size;
 132 }
 133
 134 static int gs_msg_ops_vcpu_fill_info(struct kvmppc_gs_buff *gsb,
 135                                      struct kvmppc_gs_msg *gsm)
 136 {
 137         struct kvm_vcpu *vcpu;
 138         vector128 v;
 139         int rc, i;
 140         u16 iden;
 141         u32 arch_compat = 0;
 142
 143         vcpu = gsm->data;
 144
 145         kvmppc_gsm_for_each(gsm, iden)
 146         {
 147                 rc = 0;
 148
 149                 if ((gsm->flags & KVMPPC_GS_FLAGS_WIDE) !=
 150                     (kvmppc_gsid_flags(iden) & KVMPPC_GS_FLAGS_WIDE))
 151                         continue;
 152
 153                 switch (iden) {
 154                 case KVMPPC_GSID_DSCR:
 155                         rc = kvmppc_gse_put_u64(gsb, iden, vcpu->arch.dscr);
 156                         break;
 157                 case KVMPPC_GSID_MMCRA:
 158                         rc = kvmppc_gse_put_u64(gsb, iden, vcpu->arch.mmcra);
 159                         break;
 160                 case KVMPPC_GSID_HFSCR:
 161                         rc = kvmppc_gse_put_u64(gsb, iden, vcpu->arch.hfscr);
 162                         break;
 163                 case KVMPPC_GSID_PURR:
 164                         rc = kvmppc_gse_put_u64(gsb, iden, vcpu->arch.purr);
 165                         break;
 166                 case KVMPPC_GSID_SPURR:
 167                         rc = kvmppc_gse_put_u64(gsb, iden, vcpu->arch.spurr);
 168                         break;
 169                 case KVMPPC_GSID_AMR:
 170                         rc = kvmppc_gse_put_u64(gsb, iden, vcpu->arch.amr);
 171                         break;
 172                 case KVMPPC_GSID_UAMOR:
 173                         rc = kvmppc_gse_put_u64(gsb, iden, vcpu->arch.uamor);
 174                         break;
 175                 case KVMPPC_GSID_SIAR:
 176                         rc = kvmppc_gse_put_u64(gsb, iden, vcpu->arch.siar);
 177                         break;
 178                 case KVMPPC_GSID_SDAR:
 179                         rc = kvmppc_gse_put_u64(gsb, iden, vcpu->arch.sdar);
 180                         break;
 181                 case KVMPPC_GSID_IAMR:
 182                         rc = kvmppc_gse_put_u64(gsb, iden, vcpu->arch.iamr);
 183                         break;
 184                 case KVMPPC_GSID_DAWR0:
 185                         rc = kvmppc_gse_put_u64(gsb, iden, vcpu->arch.dawr0);
 186                         break;
 187                 case KVMPPC_GSID_DAWR1:
 188                         rc = kvmppc_gse_put_u64(gsb, iden, vcpu->arch.dawr1);
 189                         break;
 190                 case KVMPPC_GSID_DAWRX0:
 191                         rc = kvmppc_gse_put_u32(gsb, iden, vcpu->arch.dawrx0);
 192                         break;
 193                 case KVMPPC_GSID_DAWRX1:
 194                         rc = kvmppc_gse_put_u32(gsb, iden, vcpu->arch.dawrx1);
 195                         break;
 196                 case KVMPPC_GSID_CIABR:
 197                         rc = kvmppc_gse_put_u64(gsb, iden, vcpu->arch.ciabr);
 198                         break;
 199                 case KVMPPC_GSID_WORT:
 200                         rc = kvmppc_gse_put_u32(gsb, iden, vcpu->arch.wort);
 201                         break;
 202                 case KVMPPC_GSID_PPR:
 203                         rc = kvmppc_gse_put_u64(gsb, iden, vcpu->arch.ppr);
 204                         break;
 205                 case KVMPPC_GSID_PSPB:
 206                         rc = kvmppc_gse_put_u32(gsb, iden, vcpu->arch.pspb);
 207                         break;
 208                 case KVMPPC_GSID_TAR:
 209                         rc = kvmppc_gse_put_u64(gsb, iden, vcpu->arch.tar);
 210                         break;
 211                 case KVMPPC_GSID_FSCR:
 212                         rc = kvmppc_gse_put_u64(gsb, iden, vcpu->arch.fscr);
 213                         break;
 214                 case KVMPPC_GSID_EBBHR:
 215                         rc = kvmppc_gse_put_u64(gsb, iden, vcpu->arch.ebbhr);
 216                         break;
 217                 case KVMPPC_GSID_EBBRR:
 218                         rc = kvmppc_gse_put_u64(gsb, iden, vcpu->arch.ebbrr);
 219                         break;
 220                 case KVMPPC_GSID_BESCR:
 221                         rc = kvmppc_gse_put_u64(gsb, iden, vcpu->arch.bescr);
 222                         break;
 223                 case KVMPPC_GSID_IC:
 224                         rc = kvmppc_gse_put_u64(gsb, iden, vcpu->arch.ic);
 225                         break;
 226                 case KVMPPC_GSID_CTRL:
 227                         rc = kvmppc_gse_put_u64(gsb, iden, vcpu->arch.ctrl);
 228                         break;
 229                 case KVMPPC_GSID_PIDR:
 230                         rc = kvmppc_gse_put_u32(gsb, iden, vcpu->arch.pid);
 231                         break;
 232                 case KVMPPC_GSID_AMOR: {
 233                         u64 amor = ~0;
 234
 235                         rc = kvmppc_gse_put_u64(gsb, iden, amor);
 236                         break;
 237                 }
 238                 case KVMPPC_GSID_VRSAVE:
 239                         rc = kvmppc_gse_put_u32(gsb, iden, vcpu->arch.vrsave);
 240                         break;
 241                 case KVMPPC_GSID_MMCR(0)... KVMPPC_GSID_MMCR(3):
 242                         i = iden - KVMPPC_GSID_MMCR(0);
 243                         rc = kvmppc_gse_put_u64(gsb, iden, vcpu->arch.mmcr[i]);
 244                         break;
 245                 case KVMPPC_GSID_SIER(0)... KVMPPC_GSID_SIER(2):
 246                         i = iden - KVMPPC_GSID_SIER(0);
 247                         rc = kvmppc_gse_put_u64(gsb, iden, vcpu->arch.sier[i]);
 248                         break;
 249                 case KVMPPC_GSID_PMC(0)... KVMPPC_GSID_PMC(5):
 250                         i = iden - KVMPPC_GSID_PMC(0);
 251                         rc = kvmppc_gse_put_u32(gsb, iden, vcpu->arch.pmc[i]);
 252                         break;
 253                 case KVMPPC_GSID_GPR(0)... KVMPPC_GSID_GPR(31):
 254                         i = iden - KVMPPC_GSID_GPR(0);
 255                         rc = kvmppc_gse_put_u64(gsb, iden,
 256                                                 vcpu->arch.regs.gpr[i]);
 257                         break;
 258                 case KVMPPC_GSID_CR:
 259                         rc = kvmppc_gse_put_u32(gsb, iden, vcpu->arch.regs.ccr);
 260                         break;
 261                 case KVMPPC_GSID_XER:
 262                         rc = kvmppc_gse_put_u64(gsb, iden, vcpu->arch.regs.xer);
 263                         break;
 264                 case KVMPPC_GSID_CTR:
 265                         rc = kvmppc_gse_put_u64(gsb, iden, vcpu->arch.regs.ctr);
 266                         break;
 267                 case KVMPPC_GSID_LR:
 268                         rc = kvmppc_gse_put_u64(gsb, iden,
 269                                                 vcpu->arch.regs.link);
 270                         break;
 271                 case KVMPPC_GSID_NIA:
 272                         rc = kvmppc_gse_put_u64(gsb, iden, vcpu->arch.regs.nip);
 273                         break;
 274                 case KVMPPC_GSID_SRR0:
 275                         rc = kvmppc_gse_put_u64(gsb, iden,
 276                                                 vcpu->arch.shregs.srr0);
 277                         break;
 278                 case KVMPPC_GSID_SRR1:
 279                         rc = kvmppc_gse_put_u64(gsb, iden,
 280                                                 vcpu->arch.shregs.srr1);
 281                         break;
 282                 case KVMPPC_GSID_SPRG0:
 283                         rc = kvmppc_gse_put_u64(gsb, iden,
 284                                                 vcpu->arch.shregs.sprg0);
 285                         break;
 286                 case KVMPPC_GSID_SPRG1:
 287                         rc = kvmppc_gse_put_u64(gsb, iden,
 288                                                 vcpu->arch.shregs.sprg1);
 289                         break;
 290                 case KVMPPC_GSID_SPRG2:
 291                         rc = kvmppc_gse_put_u64(gsb, iden,
 292                                                 vcpu->arch.shregs.sprg2);
 293                         break;
 294                 case KVMPPC_GSID_SPRG3:
 295                         rc = kvmppc_gse_put_u64(gsb, iden,
 296                                                 vcpu->arch.shregs.sprg3);
 297                         break;
 298                 case KVMPPC_GSID_DAR:
 299                         rc = kvmppc_gse_put_u64(gsb, iden,
 300                                                 vcpu->arch.shregs.dar);
 301                         break;
 302                 case KVMPPC_GSID_DSISR:
 303                         rc = kvmppc_gse_put_u32(gsb, iden,
 304                                                 vcpu->arch.shregs.dsisr);
 305                         break;
 306                 case KVMPPC_GSID_MSR:
 307                         rc = kvmppc_gse_put_u64(gsb, iden,
 308                                                 vcpu->arch.shregs.msr);
 309                         break;
 310                 case KVMPPC_GSID_VTB:
 311                         rc = kvmppc_gse_put_u64(gsb, iden,
 312                                                 vcpu->arch.vcore->vtb);
 313                         break;
 314                 case KVMPPC_GSID_LPCR:
 315                         rc = kvmppc_gse_put_u64(gsb, iden,
 316                                                 vcpu->arch.vcore->lpcr);
 317                         break;
 318                 case KVMPPC_GSID_TB_OFFSET:
 319                         rc = kvmppc_gse_put_u64(gsb, iden,
 320                                                 vcpu->arch.vcore->tb_offset);
 321                         break;
 322                 case KVMPPC_GSID_FPSCR:
 323                         rc = kvmppc_gse_put_u64(gsb, iden, vcpu->arch.fp.fpscr);
 324                         break;
 325                 case KVMPPC_GSID_VSRS(0)... KVMPPC_GSID_VSRS(31):
 326                         i = iden - KVMPPC_GSID_VSRS(0);
 327                         memcpy(&v, &vcpu->arch.fp.fpr[i],
 328                                sizeof(vcpu->arch.fp.fpr[i]));
 329                         rc = kvmppc_gse_put_vector128(gsb, iden, &v);
 330                         break;
 331 #ifdef CONFIG_VSX
 332                 case KVMPPC_GSID_VSCR:
 333                         rc = kvmppc_gse_put_u32(gsb, iden,
 334                                                 vcpu->arch.vr.vscr.u[3]);
 335                         break;
 336                 case KVMPPC_GSID_VSRS(32)... KVMPPC_GSID_VSRS(63):
 337                         i = iden - KVMPPC_GSID_VSRS(32);
 338                         rc = kvmppc_gse_put_vector128(gsb, iden,
 339                                                       &vcpu->arch.vr.vr[i]);
 340                         break;
 341 #endif
 342                 case KVMPPC_GSID_DEC_EXPIRY_TB: {
 343                         u64 dw;
 344
 345                         dw = vcpu->arch.dec_expires -
 346                              vcpu->arch.vcore->tb_offset;
 347                         rc = kvmppc_gse_put_u64(gsb, iden, dw);
 348                         break;
 349                 }
 350                 case KVMPPC_GSID_LOGICAL_PVR:
 351                         /*
 352                          * Though 'arch_compat == 0' would mean the default
 353                          * compatibility, arch_compat, being a Guest Wide
 354                          * Element, cannot be filled with a value of 0 in GSB
 355                          * as this would result into a kernel trap.
 356                          * Hence, when `arch_compat == 0`, arch_compat should
 357                          * default to L1's PVR.
 358                          */
 359                         if (!vcpu->arch.vcore->arch_compat) {
 360                                 if (cpu_has_feature(CPU_FTR_ARCH_31))
 361                                         arch_compat = PVR_ARCH_31;
 362                                 else if (cpu_has_feature(CPU_FTR_ARCH_300))
 363                                         arch_compat = PVR_ARCH_300;
 364                         } else {
 365                                 arch_compat = vcpu->arch.vcore->arch_compat;
 366                         }
 367                         rc = kvmppc_gse_put_u32(gsb, iden, arch_compat);
 368                         break;
 369                 }
 370
 371                 if (rc < 0)
 372                         return rc;
 373         }
 374
 375         return 0;
 376 }
 377
 378 static int gs_msg_ops_vcpu_refresh_info(struct kvmppc_gs_msg *gsm,
 379                                         struct kvmppc_gs_buff *gsb)
 380 {
 381         struct kvmppc_gs_parser gsp = { 0 };
 382         struct kvmhv_nestedv2_io *io;
 383         struct kvmppc_gs_bitmap *valids;
 384         struct kvm_vcpu *vcpu;
 385         struct kvmppc_gs_elem *gse;
 386         vector128 v;
 387         int rc, i;
 388         u16 iden;
 389
 390         vcpu = gsm->data;
 391
 392         rc = kvmppc_gse_parse(&gsp, gsb);
 393         if (rc < 0)
 394                 return rc;
 395
 396         io = &vcpu->arch.nestedv2_io;
 397         valids = &io->valids;
 398
 399         kvmppc_gsp_for_each(&gsp, iden, gse)
 400         {
 401                 switch (iden) {
 402                 case KVMPPC_GSID_DSCR:
 403                         vcpu->arch.dscr = kvmppc_gse_get_u64(gse);
 404                         break;
 405                 case KVMPPC_GSID_MMCRA:
 406                         vcpu->arch.mmcra = kvmppc_gse_get_u64(gse);
 407                         break;
 408                 case KVMPPC_GSID_HFSCR:
 409                         vcpu->arch.hfscr = kvmppc_gse_get_u64(gse);
 410                         break;
 411                 case KVMPPC_GSID_PURR:
 412                         vcpu->arch.purr = kvmppc_gse_get_u64(gse);
 413                         break;
 414                 case KVMPPC_GSID_SPURR:
 415                         vcpu->arch.spurr = kvmppc_gse_get_u64(gse);
 416                         break;
 417                 case KVMPPC_GSID_AMR:
 418                         vcpu->arch.amr = kvmppc_gse_get_u64(gse);
 419                         break;
 420                 case KVMPPC_GSID_UAMOR:
 421                         vcpu->arch.uamor = kvmppc_gse_get_u64(gse);
 422                         break;
 423                 case KVMPPC_GSID_SIAR:
 424                         vcpu->arch.siar = kvmppc_gse_get_u64(gse);
 425                         break;
 426                 case KVMPPC_GSID_SDAR:
 427                         vcpu->arch.sdar = kvmppc_gse_get_u64(gse);
 428                         break;
 429                 case KVMPPC_GSID_IAMR:
 430                         vcpu->arch.iamr = kvmppc_gse_get_u64(gse);
 431                         break;
 432                 case KVMPPC_GSID_DAWR0:
 433                         vcpu->arch.dawr0 = kvmppc_gse_get_u64(gse);
 434                         break;
 435                 case KVMPPC_GSID_DAWR1:
 436                         vcpu->arch.dawr1 = kvmppc_gse_get_u64(gse);
 437                         break;
 438                 case KVMPPC_GSID_DAWRX0:
 439                         vcpu->arch.dawrx0 = kvmppc_gse_get_u32(gse);
 440                         break;
 441                 case KVMPPC_GSID_DAWRX1:
 442                         vcpu->arch.dawrx1 = kvmppc_gse_get_u32(gse);
 443                         break;
 444                 case KVMPPC_GSID_CIABR:
 445                         vcpu->arch.ciabr = kvmppc_gse_get_u64(gse);
 446                         break;
 447                 case KVMPPC_GSID_WORT:
 448                         vcpu->arch.wort = kvmppc_gse_get_u32(gse);
 449                         break;
 450                 case KVMPPC_GSID_PPR:
 451                         vcpu->arch.ppr = kvmppc_gse_get_u64(gse);
 452                         break;
 453                 case KVMPPC_GSID_PSPB:
 454                         vcpu->arch.pspb = kvmppc_gse_get_u32(gse);
 455                         break;
 456                 case KVMPPC_GSID_TAR:
 457                         vcpu->arch.tar = kvmppc_gse_get_u64(gse);
 458                         break;
 459                 case KVMPPC_GSID_FSCR:
 460                         vcpu->arch.fscr = kvmppc_gse_get_u64(gse);
 461                         break;
 462                 case KVMPPC_GSID_EBBHR:
 463                         vcpu->arch.ebbhr = kvmppc_gse_get_u64(gse);
 464                         break;
 465                 case KVMPPC_GSID_EBBRR:
 466                         vcpu->arch.ebbrr = kvmppc_gse_get_u64(gse);
 467                         break;
 468                 case KVMPPC_GSID_BESCR:
 469                         vcpu->arch.bescr = kvmppc_gse_get_u64(gse);
 470                         break;
 471                 case KVMPPC_GSID_IC:
 472                         vcpu->arch.ic = kvmppc_gse_get_u64(gse);
 473                         break;
 474                 case KVMPPC_GSID_CTRL:
 475                         vcpu->arch.ctrl = kvmppc_gse_get_u64(gse);
 476                         break;
 477                 case KVMPPC_GSID_PIDR:
 478                         vcpu->arch.pid = kvmppc_gse_get_u32(gse);
 479                         break;
 480                 case KVMPPC_GSID_AMOR:
 481                         break;
 482                 case KVMPPC_GSID_VRSAVE:
 483                         vcpu->arch.vrsave = kvmppc_gse_get_u32(gse);
 484                         break;
 485                 case KVMPPC_GSID_MMCR(0)... KVMPPC_GSID_MMCR(3):
 486                         i = iden - KVMPPC_GSID_MMCR(0);
 487                         vcpu->arch.mmcr[i] = kvmppc_gse_get_u64(gse);
 488                         break;
 489                 case KVMPPC_GSID_SIER(0)... KVMPPC_GSID_SIER(2):
 490                         i = iden - KVMPPC_GSID_SIER(0);
 491                         vcpu->arch.sier[i] = kvmppc_gse_get_u64(gse);
 492                         break;
 493                 case KVMPPC_GSID_PMC(0)... KVMPPC_GSID_PMC(5):
 494                         i = iden - KVMPPC_GSID_PMC(0);
 495                         vcpu->arch.pmc[i] = kvmppc_gse_get_u32(gse);
 496                         break;
 497                 case KVMPPC_GSID_GPR(0)... KVMPPC_GSID_GPR(31):
 498                         i = iden - KVMPPC_GSID_GPR(0);
 499                         vcpu->arch.regs.gpr[i] = kvmppc_gse_get_u64(gse);
 500                         break;
 501                 case KVMPPC_GSID_CR:
 502                         vcpu->arch.regs.ccr = kvmppc_gse_get_u32(gse);
 503                         break;
 504                 case KVMPPC_GSID_XER:
 505                         vcpu->arch.regs.xer = kvmppc_gse_get_u64(gse);
 506                         break;
 507                 case KVMPPC_GSID_CTR:
 508                         vcpu->arch.regs.ctr = kvmppc_gse_get_u64(gse);
 509                         break;
 510                 case KVMPPC_GSID_LR:
 511                         vcpu->arch.regs.link = kvmppc_gse_get_u64(gse);
 512                         break;
 513                 case KVMPPC_GSID_NIA:
 514                         vcpu->arch.regs.nip = kvmppc_gse_get_u64(gse);
 515                         break;
 516                 case KVMPPC_GSID_SRR0:
 517                         vcpu->arch.shregs.srr0 = kvmppc_gse_get_u64(gse);
 518                         break;
 519                 case KVMPPC_GSID_SRR1:
 520                         vcpu->arch.shregs.srr1 = kvmppc_gse_get_u64(gse);
 521                         break;
 522                 case KVMPPC_GSID_SPRG0:
 523                         vcpu->arch.shregs.sprg0 = kvmppc_gse_get_u64(gse);
 524                         break;
 525                 case KVMPPC_GSID_SPRG1:
 526                         vcpu->arch.shregs.sprg1 = kvmppc_gse_get_u64(gse);
 527                         break;
 528                 case KVMPPC_GSID_SPRG2:
 529                         vcpu->arch.shregs.sprg2 = kvmppc_gse_get_u64(gse);
 530                         break;
 531                 case KVMPPC_GSID_SPRG3:
 532                         vcpu->arch.shregs.sprg3 = kvmppc_gse_get_u64(gse);
 533                         break;
 534                 case KVMPPC_GSID_DAR:
 535                         vcpu->arch.shregs.dar = kvmppc_gse_get_u64(gse);
 536                         break;
 537                 case KVMPPC_GSID_DSISR:
 538                         vcpu->arch.shregs.dsisr = kvmppc_gse_get_u32(gse);
 539                         break;
 540                 case KVMPPC_GSID_MSR:
 541                         vcpu->arch.shregs.msr = kvmppc_gse_get_u64(gse);
 542                         break;
 543                 case KVMPPC_GSID_VTB:
 544                         vcpu->arch.vcore->vtb = kvmppc_gse_get_u64(gse);
 545                         break;
 546                 case KVMPPC_GSID_LPCR:
 547                         vcpu->arch.vcore->lpcr = kvmppc_gse_get_u64(gse);
 548                         break;
 549                 case KVMPPC_GSID_TB_OFFSET:
 550                         vcpu->arch.vcore->tb_offset = kvmppc_gse_get_u64(gse);
 551                         break;
 552                 case KVMPPC_GSID_FPSCR:
 553                         vcpu->arch.fp.fpscr = kvmppc_gse_get_u64(gse);
 554                         break;
 555                 case KVMPPC_GSID_VSRS(0)... KVMPPC_GSID_VSRS(31):
 556                         kvmppc_gse_get_vector128(gse, &v);
 557                         i = iden - KVMPPC_GSID_VSRS(0);
 558                         memcpy(&vcpu->arch.fp.fpr[i], &v,
 559                                sizeof(vcpu->arch.fp.fpr[i]));
 560                         break;
 561 #ifdef CONFIG_VSX
 562                 case KVMPPC_GSID_VSCR:
 563                         vcpu->arch.vr.vscr.u[3] = kvmppc_gse_get_u32(gse);
 564                         break;
 565                 case KVMPPC_GSID_VSRS(32)... KVMPPC_GSID_VSRS(63):
 566                         i = iden - KVMPPC_GSID_VSRS(32);
 567                         kvmppc_gse_get_vector128(gse, &vcpu->arch.vr.vr[i]);
 568                         break;
 569 #endif
 570                 case KVMPPC_GSID_HDAR:
 571                         vcpu->arch.fault_dar = kvmppc_gse_get_u64(gse);
 572                         break;
 573                 case KVMPPC_GSID_HDSISR:
 574                         vcpu->arch.fault_dsisr = kvmppc_gse_get_u32(gse);
 575                         break;
 576                 case KVMPPC_GSID_ASDR:
 577                         vcpu->arch.fault_gpa = kvmppc_gse_get_u64(gse);
 578                         break;
 579                 case KVMPPC_GSID_HEIR:
 580                         vcpu->arch.emul_inst = kvmppc_gse_get_u64(gse);
 581                         break;
 582                 case KVMPPC_GSID_DEC_EXPIRY_TB: {
 583                         u64 dw;
 584
 585                         dw = kvmppc_gse_get_u64(gse);
 586                         vcpu->arch.dec_expires =
 587                                 dw + vcpu->arch.vcore->tb_offset;
 588                         break;
 589                 }
 590                 case KVMPPC_GSID_LOGICAL_PVR:
 591                         vcpu->arch.vcore->arch_compat = kvmppc_gse_get_u32(gse);
 592                         break;
 593                 default:
 594                         continue;
 595                 }
 596                 kvmppc_gsbm_set(valids, iden);
 597         }
 598
 599         return 0;
 600 }
 601
 602 static struct kvmppc_gs_msg_ops vcpu_message_ops = {
 603         .get_size = gs_msg_ops_vcpu_get_size,
 604         .fill_info = gs_msg_ops_vcpu_fill_info,
 605         .refresh_info = gs_msg_ops_vcpu_refresh_info,
 606 };
 607
 608 static int kvmhv_nestedv2_host_create(struct kvm_vcpu *vcpu,
 609                                       struct kvmhv_nestedv2_io *io)
 610 {
 611         struct kvmhv_nestedv2_config *cfg;
 612         struct kvmppc_gs_buff *gsb, *vcpu_run_output, *vcpu_run_input;
 613         unsigned long guest_id, vcpu_id;
 614         struct kvmppc_gs_msg *gsm, *vcpu_message, *vcore_message;
 615         int rc;
 616
 617         cfg = &io->cfg;
 618         guest_id = vcpu->kvm->arch.lpid;
 619         vcpu_id = vcpu->vcpu_id;
 620
 621         gsm = kvmppc_gsm_new(&config_msg_ops, cfg, KVMPPC_GS_FLAGS_WIDE,
 622                              GFP_KERNEL);
 623         if (!gsm) {
 624                 rc = -ENOMEM;
 625                 goto err;
 626         }
 627
 628         gsb = kvmppc_gsb_new(kvmppc_gsm_size(gsm), guest_id, vcpu_id,
 629                              GFP_KERNEL);
 630         if (!gsb) {
 631                 rc = -ENOMEM;
 632                 goto free_gsm;
 633         }
 634
 635         rc = kvmppc_gsb_receive_datum(gsb, gsm,
 636                                       KVMPPC_GSID_RUN_OUTPUT_MIN_SIZE);
 637         if (rc < 0) {
 638                 pr_err("KVM-NESTEDv2: couldn't get vcpu run output buffer minimum size\n");
 639                 goto free_gsb;
 640         }
 641
 642         vcpu_run_output = kvmppc_gsb_new(cfg->vcpu_run_output_size, guest_id,
 643                                          vcpu_id, GFP_KERNEL);
 644         if (!vcpu_run_output) {
 645                 rc = -ENOMEM;
 646                 goto free_gsb;
 647         }
 648
 649         cfg->vcpu_run_output_cfg.address = kvmppc_gsb_paddress(vcpu_run_output);
 650         cfg->vcpu_run_output_cfg.size = kvmppc_gsb_capacity(vcpu_run_output);
 651         io->vcpu_run_output = vcpu_run_output;
 652
 653         gsm->flags = 0;
 654         rc = kvmppc_gsb_send_datum(gsb, gsm, KVMPPC_GSID_RUN_OUTPUT);
 655         if (rc < 0) {
 656                 pr_err("KVM-NESTEDv2: couldn't set vcpu run output buffer\n");
 657                 goto free_gs_out;
 658         }
 659
 660         vcpu_message = kvmppc_gsm_new(&vcpu_message_ops, vcpu, 0, GFP_KERNEL);
 661         if (!vcpu_message) {
 662                 rc = -ENOMEM;
 663                 goto free_gs_out;
 664         }
 665         kvmppc_gsm_include_all(vcpu_message);
 666
 667         io->vcpu_message = vcpu_message;
 668
 669         vcpu_run_input = kvmppc_gsb_new(kvmppc_gsm_size(vcpu_message), guest_id,
 670                                         vcpu_id, GFP_KERNEL);
 671         if (!vcpu_run_input) {
 672                 rc = -ENOMEM;
 673                 goto free_vcpu_message;
 674         }
 675
 676         io->vcpu_run_input = vcpu_run_input;
 677         cfg->vcpu_run_input_cfg.address = kvmppc_gsb_paddress(vcpu_run_input);
 678         cfg->vcpu_run_input_cfg.size = kvmppc_gsb_capacity(vcpu_run_input);
 679         rc = kvmppc_gsb_send_datum(gsb, gsm, KVMPPC_GSID_RUN_INPUT);
 680         if (rc < 0) {
 681                 pr_err("KVM-NESTEDv2: couldn't set vcpu run input buffer\n");
 682                 goto free_vcpu_run_input;
 683         }
 684
 685         vcore_message = kvmppc_gsm_new(&vcpu_message_ops, vcpu,
 686                                        KVMPPC_GS_FLAGS_WIDE, GFP_KERNEL);
 687         if (!vcore_message) {
 688                 rc = -ENOMEM;
 689                 goto free_vcpu_run_input;
 690         }
 691
 692         kvmppc_gsm_include_all(vcore_message);
 693         kvmppc_gsbm_clear(&vcore_message->bitmap, KVMPPC_GSID_LOGICAL_PVR);
 694         io->vcore_message = vcore_message;
 695
 696         kvmppc_gsbm_fill(&io->valids);
 697         kvmppc_gsm_free(gsm);
 698         kvmppc_gsb_free(gsb);
 699         return 0;
 700
 701 free_vcpu_run_input:
 702         kvmppc_gsb_free(vcpu_run_input);
 703 free_vcpu_message:
 704         kvmppc_gsm_free(vcpu_message);
 705 free_gs_out:
 706         kvmppc_gsb_free(vcpu_run_output);
 707 free_gsb:
 708         kvmppc_gsb_free(gsb);
 709 free_gsm:
 710         kvmppc_gsm_free(gsm);
 711 err:
 712         return rc;
 713 }
 714
 715 /**
 716  * __kvmhv_nestedv2_mark_dirty() - mark a Guest State ID to be sent to the host
 717  * @vcpu: vcpu
 718  * @iden: guest state ID
 719  *
 720  * Mark a guest state ID as having been changed by the L1 host and thus
 721  * the new value must be sent to the L0 hypervisor. See kvmhv_nestedv2_flush_vcpu()
 722  */
 723 int __kvmhv_nestedv2_mark_dirty(struct kvm_vcpu *vcpu, u16 iden)
 724 {
 725         struct kvmhv_nestedv2_io *io;
 726         struct kvmppc_gs_bitmap *valids;
 727         struct kvmppc_gs_msg *gsm;
 728
 729         if (!iden)
 730                 return 0;
 731
 732         io = &vcpu->arch.nestedv2_io;
 733         valids = &io->valids;
 734         gsm = io->vcpu_message;
 735         kvmppc_gsm_include(gsm, iden);
 736         gsm = io->vcore_message;
 737         kvmppc_gsm_include(gsm, iden);
 738         kvmppc_gsbm_set(valids, iden);
 739         return 0;
 740 }
 741 EXPORT_SYMBOL_GPL(__kvmhv_nestedv2_mark_dirty);
 742
 743 /**
 744  * __kvmhv_nestedv2_cached_reload() - reload a Guest State ID from the host
 745  * @vcpu: vcpu
 746  * @iden: guest state ID
 747  *
 748  * Reload the value for the guest state ID from the L0 host into the L1 host.
 749  * This is cached so that going out to the L0 host only happens if necessary.
 750  */
 751 int __kvmhv_nestedv2_cached_reload(struct kvm_vcpu *vcpu, u16 iden)
 752 {
 753         struct kvmhv_nestedv2_io *io;
 754         struct kvmppc_gs_bitmap *valids;
 755         struct kvmppc_gs_buff *gsb;
 756         struct kvmppc_gs_msg gsm;
 757         int rc;
 758
 759         if (!iden)
 760                 return 0;
 761
 762         io = &vcpu->arch.nestedv2_io;
 763         valids = &io->valids;
 764         if (kvmppc_gsbm_test(valids, iden))
 765                 return 0;
 766
 767         gsb = io->vcpu_run_input;
 768         kvmppc_gsm_init(&gsm, &vcpu_message_ops, vcpu, kvmppc_gsid_flags(iden));
 769         rc = kvmppc_gsb_receive_datum(gsb, &gsm, iden);
 770         if (rc < 0) {
 771                 pr_err("KVM-NESTEDv2: couldn't get GSID: 0x%x\n", iden);
 772                 return rc;
 773         }
 774         return 0;
 775 }
 776 EXPORT_SYMBOL_GPL(__kvmhv_nestedv2_cached_reload);
 777
 778 /**
 779  * kvmhv_nestedv2_flush_vcpu() - send modified Guest State IDs to the host
 780  * @vcpu: vcpu
 781  * @time_limit: hdec expiry tb
 782  *
 783  * Send the values marked by __kvmhv_nestedv2_mark_dirty() to the L0 host.
 784  * Thread wide values are copied to the H_GUEST_RUN_VCPU input buffer. Guest
 785  * wide values need to be sent with H_GUEST_SET first.
 786  *
 787  * The hdec tb offset is always sent to L0 host.
 788  */
 789 int kvmhv_nestedv2_flush_vcpu(struct kvm_vcpu *vcpu, u64 time_limit)
 790 {
 791         struct kvmhv_nestedv2_io *io;
 792         struct kvmppc_gs_buff *gsb;
 793         struct kvmppc_gs_msg *gsm;
 794         int rc;
 795
 796         io = &vcpu->arch.nestedv2_io;
 797         gsb = io->vcpu_run_input;
 798         gsm = io->vcore_message;
 799         rc = kvmppc_gsb_send_data(gsb, gsm);
 800         if (rc < 0) {
 801                 pr_err("KVM-NESTEDv2: couldn't set guest wide elements\n");
 802                 return rc;
 803         }
 804
 805         gsm = io->vcpu_message;
 806         kvmppc_gsb_reset(gsb);
 807         rc = kvmppc_gsm_fill_info(gsm, gsb);
 808         if (rc < 0) {
 809                 pr_err("KVM-NESTEDv2: couldn't fill vcpu run input buffer\n");
 810                 return rc;
 811         }
 812
 813         rc = kvmppc_gse_put_u64(gsb, KVMPPC_GSID_HDEC_EXPIRY_TB, time_limit);
 814         if (rc < 0)
 815                 return rc;
 816         return 0;
 817 }
 818 EXPORT_SYMBOL_GPL(kvmhv_nestedv2_flush_vcpu);
 819
 820 /**
 821  * kvmhv_nestedv2_set_ptbl_entry() - send partition and process table state to
 822  * L0 host
 823  * @lpid: guest id
 824  * @dw0: partition table double word
 825  * @dw1: process table double word
 826  */
 827 int kvmhv_nestedv2_set_ptbl_entry(unsigned long lpid, u64 dw0, u64 dw1)
 828 {
 829         struct kvmppc_gs_part_table patbl;
 830         struct kvmppc_gs_proc_table prtbl;
 831         struct kvmppc_gs_buff *gsb;
 832         size_t size;
 833         int rc;
 834
 835         size = kvmppc_gse_total_size(
 836                        kvmppc_gsid_size(KVMPPC_GSID_PARTITION_TABLE)) +
 837                kvmppc_gse_total_size(
 838                        kvmppc_gsid_size(KVMPPC_GSID_PROCESS_TABLE)) +
 839                sizeof(struct kvmppc_gs_header);
 840         gsb = kvmppc_gsb_new(size, lpid, 0, GFP_KERNEL);
 841         if (!gsb)
 842                 return -ENOMEM;
 843
 844         patbl.address = dw0 & RPDB_MASK;
 845         patbl.ea_bits = ((((dw0 & RTS1_MASK) >> (RTS1_SHIFT - 3)) |
 846                           ((dw0 & RTS2_MASK) >> RTS2_SHIFT)) +
 847                          31);
 848         patbl.gpd_size = 1ul << ((dw0 & RPDS_MASK) + 3);
 849         rc = kvmppc_gse_put_part_table(gsb, KVMPPC_GSID_PARTITION_TABLE, patbl);
 850         if (rc < 0)
 851                 goto free_gsb;
 852
 853         prtbl.address = dw1 & PRTB_MASK;
 854         prtbl.gpd_size = 1ul << ((dw1 & PRTS_MASK) + 12);
 855         rc = kvmppc_gse_put_proc_table(gsb, KVMPPC_GSID_PROCESS_TABLE, prtbl);
 856         if (rc < 0)
 857                 goto free_gsb;
 858
 859         rc = kvmppc_gsb_send(gsb, KVMPPC_GS_FLAGS_WIDE);
 860         if (rc < 0) {
 861                 pr_err("KVM-NESTEDv2: couldn't set the PATE\n");
 862                 goto free_gsb;
 863         }
 864
 865         kvmppc_gsb_free(gsb);
 866         return 0;
 867
 868 free_gsb:
 869         kvmppc_gsb_free(gsb);
 870         return rc;
 871 }
 872 EXPORT_SYMBOL_GPL(kvmhv_nestedv2_set_ptbl_entry);
 873
 874 /**
 875  * kvmhv_nestedv2_set_vpa() - register L2 VPA with L0
 876  * @vcpu: vcpu
 877  * @vpa: L1 logical real address
 878  */
 879 int kvmhv_nestedv2_set_vpa(struct kvm_vcpu *vcpu, unsigned long vpa)
 880 {
 881         struct kvmhv_nestedv2_io *io;
 882         struct kvmppc_gs_buff *gsb;
 883         int rc = 0;
 884
 885         io = &vcpu->arch.nestedv2_io;
 886         gsb = io->vcpu_run_input;
 887
 888         kvmppc_gsb_reset(gsb);
 889         rc = kvmppc_gse_put_u64(gsb, KVMPPC_GSID_VPA, vpa);
 890         if (rc < 0)
 891                 goto out;
 892
 893         rc = kvmppc_gsb_send(gsb, 0);
 894         if (rc < 0)
 895                 pr_err("KVM-NESTEDv2: couldn't register the L2 VPA (rc=%d)\n", rc);
 896
 897 out:
 898         kvmppc_gsb_reset(gsb);
 899         return rc;
 900 }
 901 EXPORT_SYMBOL_GPL(kvmhv_nestedv2_set_vpa);
 902
 903 /**
 904  * kvmhv_nestedv2_parse_output() - receive values from H_GUEST_RUN_VCPU output
 905  * @vcpu: vcpu
 906  *
 907  * Parse the output buffer from H_GUEST_RUN_VCPU to update vcpu.
 908  */
 909 int kvmhv_nestedv2_parse_output(struct kvm_vcpu *vcpu)
 910 {
 911         struct kvmhv_nestedv2_io *io;
 912         struct kvmppc_gs_buff *gsb;
 913         struct kvmppc_gs_msg gsm;
 914
 915         io = &vcpu->arch.nestedv2_io;
 916         gsb = io->vcpu_run_output;
 917
 918         vcpu->arch.fault_dar = 0;
 919         vcpu->arch.fault_dsisr = 0;
 920         vcpu->arch.fault_gpa = 0;
 921         vcpu->arch.emul_inst = KVM_INST_FETCH_FAILED;
 922
 923         kvmppc_gsm_init(&gsm, &vcpu_message_ops, vcpu, 0);
 924         return kvmppc_gsm_refresh_info(&gsm, gsb);
 925 }
 926 EXPORT_SYMBOL_GPL(kvmhv_nestedv2_parse_output);
 927
 928 static void kvmhv_nestedv2_host_free(struct kvm_vcpu *vcpu,
 929                                      struct kvmhv_nestedv2_io *io)
 930 {
 931         kvmppc_gsm_free(io->vcpu_message);
 932         kvmppc_gsm_free(io->vcore_message);
 933         kvmppc_gsb_free(io->vcpu_run_input);
 934         kvmppc_gsb_free(io->vcpu_run_output);
 935 }
 936
 937 int __kvmhv_nestedv2_reload_ptregs(struct kvm_vcpu *vcpu, struct pt_regs *regs)
 938 {
 939         struct kvmhv_nestedv2_io *io;
 940         struct kvmppc_gs_bitmap *valids;
 941         struct kvmppc_gs_buff *gsb;
 942         struct kvmppc_gs_msg gsm;
 943         int rc = 0;
 944
 945
 946         io = &vcpu->arch.nestedv2_io;
 947         valids = &io->valids;
 948
 949         gsb = io->vcpu_run_input;
 950         kvmppc_gsm_init(&gsm, &vcpu_message_ops, vcpu, 0);
 951
 952         for (int i = 0; i < 32; i++) {
 953                 if (!kvmppc_gsbm_test(valids, KVMPPC_GSID_GPR(i)))
 954                         kvmppc_gsm_include(&gsm, KVMPPC_GSID_GPR(i));
 955         }
 956
 957         if (!kvmppc_gsbm_test(valids, KVMPPC_GSID_CR))
 958                 kvmppc_gsm_include(&gsm, KVMPPC_GSID_CR);
 959
 960         if (!kvmppc_gsbm_test(valids, KVMPPC_GSID_XER))
 961                 kvmppc_gsm_include(&gsm, KVMPPC_GSID_XER);
 962
 963         if (!kvmppc_gsbm_test(valids, KVMPPC_GSID_CTR))
 964                 kvmppc_gsm_include(&gsm, KVMPPC_GSID_CTR);
 965
 966         if (!kvmppc_gsbm_test(valids, KVMPPC_GSID_LR))
 967                 kvmppc_gsm_include(&gsm, KVMPPC_GSID_LR);
 968
 969         if (!kvmppc_gsbm_test(valids, KVMPPC_GSID_NIA))
 970                 kvmppc_gsm_include(&gsm, KVMPPC_GSID_NIA);
 971
 972         rc = kvmppc_gsb_receive_data(gsb, &gsm);
 973         if (rc < 0)
 974                 pr_err("KVM-NESTEDv2: couldn't reload ptregs\n");
 975
 976         return rc;
 977 }
 978 EXPORT_SYMBOL_GPL(__kvmhv_nestedv2_reload_ptregs);
 979
 980 int __kvmhv_nestedv2_mark_dirty_ptregs(struct kvm_vcpu *vcpu,
 981                                        struct pt_regs *regs)
 982 {
 983         for (int i = 0; i < 32; i++)
 984                 kvmhv_nestedv2_mark_dirty(vcpu, KVMPPC_GSID_GPR(i));
 985
 986         kvmhv_nestedv2_mark_dirty(vcpu, KVMPPC_GSID_CR);
 987         kvmhv_nestedv2_mark_dirty(vcpu, KVMPPC_GSID_XER);
 988         kvmhv_nestedv2_mark_dirty(vcpu, KVMPPC_GSID_CTR);
 989         kvmhv_nestedv2_mark_dirty(vcpu, KVMPPC_GSID_LR);
 990         kvmhv_nestedv2_mark_dirty(vcpu, KVMPPC_GSID_NIA);
 991
 992         return 0;
 993 }
 994 EXPORT_SYMBOL_GPL(__kvmhv_nestedv2_mark_dirty_ptregs);
 995
 996 /**
 997  * kvmhv_nestedv2_vcpu_create() - create nested vcpu for the NESTEDv2 API
 998  * @vcpu: vcpu
 999  * @io: NESTEDv2 nested io state
1000  *
1001  * Parse the output buffer from H_GUEST_RUN_VCPU to update vcpu.
1002  */
1003 int kvmhv_nestedv2_vcpu_create(struct kvm_vcpu *vcpu,
1004                                struct kvmhv_nestedv2_io *io)
1005 {
1006         long rc;
1007
1008         rc = plpar_guest_create_vcpu(0, vcpu->kvm->arch.lpid, vcpu->vcpu_id);
1009
1010         if (rc != H_SUCCESS) {
1011                 pr_err("KVM: Create Guest vcpu hcall failed, rc=%ld\n", rc);
1012                 switch (rc) {
1013                 case H_NOT_ENOUGH_RESOURCES:
1014                 case H_ABORTED:
1015                         return -ENOMEM;
1016                 case H_AUTHORITY:
1017                         return -EPERM;
1018                 default:
1019                         return -EINVAL;
1020                 }
1021         }
1022
1023         rc = kvmhv_nestedv2_host_create(vcpu, io);
1024
1025         return rc;
1026 }
1027 EXPORT_SYMBOL_GPL(kvmhv_nestedv2_vcpu_create);
1028
1029 /**
1030  * kvmhv_nestedv2_vcpu_free() - free the NESTEDv2 state
1031  * @vcpu: vcpu
1032  * @io: NESTEDv2 nested io state
1033  */
1034 void kvmhv_nestedv2_vcpu_free(struct kvm_vcpu *vcpu,
1035                               struct kvmhv_nestedv2_io *io)
1036 {
1037         kvmhv_nestedv2_host_free(vcpu, io);
1038 }
1039 EXPORT_SYMBOL_GPL(kvmhv_nestedv2_vcpu_free);