static int htab_load(QEMUFile *f, void *opaque, int version_id) { sPAPRMachineState *spapr = opaque; uint32_t section_hdr; int fd = -1; if (version_id < 1 || version_id > 1) { error_report("htab_load() bad version"); return -EINVAL; } section_hdr = qemu_get_be32(f); if (section_hdr) { Error *local_err; /* First section gives the htab size */ spapr_reallocate_hpt(spapr, section_hdr, &local_err); if (local_err) { error_report_err(local_err); return -EINVAL; } return 0; } if (!spapr->htab) { assert(kvm_enabled()); fd = kvmppc_get_htab_fd(true); if (fd < 0) { error_report("Unable to open fd to restore KVM hash table: %s", strerror(errno)); } } while (true) { uint32_t index; uint16_t n_valid, n_invalid; index = qemu_get_be32(f); n_valid = qemu_get_be16(f); n_invalid = qemu_get_be16(f); if ((index == 0) && (n_valid == 0) && (n_invalid == 0)) { /* End of Stream */ break; } if ((index + n_valid + n_invalid) > (HTAB_SIZE(spapr) / HASH_PTE_SIZE_64)) { /* Bad index in stream */ error_report( "htab_load() bad index %d (%hd+%hd entries) in htab stream (htab_shift=%d)", index, n_valid, n_invalid, spapr->htab_shift); return -EINVAL; } if (spapr->htab) { if (n_valid) { qemu_get_buffer(f, HPTE(spapr->htab, index), HASH_PTE_SIZE_64 * n_valid); } if (n_invalid) { memset(HPTE(spapr->htab, index + n_valid), 0, HASH_PTE_SIZE_64 * n_invalid); } } else { int rc; assert(fd >= 0); rc = kvmppc_load_htab_chunk(f, fd, index, n_valid, n_invalid); if (rc < 0) { return rc; } } } if (!spapr->htab) { assert(fd >= 0); close(fd); } return 0; }