static void initiate_domain_create(libxl__egc *egc, libxl__domain_create_state *dcs) { STATE_AO_GC(dcs->ao); libxl_ctx *ctx = libxl__gc_owner(gc); uint32_t domid; int i, ret; /* convenience aliases */ libxl_domain_config *const d_config = dcs->guest_config; const int restore_fd = dcs->restore_fd; memset(&dcs->build_state, 0, sizeof(dcs->build_state)); domid = 0; ret = libxl__domain_create_info_setdefault(gc, &d_config->c_info); if (ret) goto error_out; ret = libxl__domain_make(gc, &d_config->c_info, &domid); if (ret) { LIBXL__LOG(ctx, LIBXL__LOG_ERROR, "cannot make domain: %d", ret); dcs->guest_domid = domid; ret = ERROR_FAIL; goto error_out; } dcs->guest_domid = domid; dcs->dmss.dm.guest_domid = 0; /* means we haven't spawned */ ret = libxl__domain_build_info_setdefault(gc, &d_config->b_info); if (ret) goto error_out; if (!sched_params_valid(gc, domid, &d_config->b_info.sched_params)) { LOG(ERROR, "Invalid scheduling parameters\n"); ret = ERROR_INVAL; goto error_out; } for (i = 0; i < d_config->num_disks; i++) { ret = libxl__device_disk_setdefault(gc, &d_config->disks[i]); if (ret) goto error_out; } dcs->bl.ao = ao; libxl_device_disk *bootdisk = d_config->num_disks > 0 ? &d_config->disks[0] : NULL; if (restore_fd >= 0) { LOG(DEBUG, "restoring, not running bootloader\n"); domcreate_bootloader_done(egc, &dcs->bl, 0); } else { LOG(DEBUG, "running bootloader"); dcs->bl.callback = domcreate_bootloader_done; dcs->bl.console_available = domcreate_bootloader_console_available; dcs->bl.info = &d_config->b_info; dcs->bl.disk = bootdisk; dcs->bl.domid = dcs->guest_domid; dcs->bl.kernel = &dcs->build_state.pv_kernel; dcs->bl.ramdisk = &dcs->build_state.pv_ramdisk; libxl__bootloader_run(egc, &dcs->bl); } return; error_out: assert(ret); domcreate_complete(egc, dcs, ret); }
static void initiate_domain_create(libxl__egc *egc, libxl__domain_create_state *dcs) { STATE_AO_GC(dcs->ao); libxl_ctx *ctx = libxl__gc_owner(gc); uint32_t domid; int i, ret; size_t last_devid = -1; bool pod_enabled = false; /* convenience aliases */ libxl_domain_config *const d_config = dcs->guest_config; const int restore_fd = dcs->restore_fd; memset(&dcs->build_state, 0, sizeof(dcs->build_state)); domid = 0; /* If target_memkb is smaller than max_memkb, the subsequent call * to libxc when building HVM domain will enable PoD mode. */ pod_enabled = (d_config->c_info.type == LIBXL_DOMAIN_TYPE_HVM) && (d_config->b_info.target_memkb < d_config->b_info.max_memkb); /* We cannot have PoD and PCI device assignment at the same time * for HVM guest. It was reported that IOMMU cannot work with PoD * enabled because it needs to populated entire page table for * guest. To stay on the safe side, we disable PCI device * assignment when PoD is enabled. */ if (d_config->c_info.type == LIBXL_DOMAIN_TYPE_HVM && d_config->num_pcidevs && pod_enabled) { ret = ERROR_INVAL; LOG(ERROR, "PCI device assignment for HVM guest failed due to PoD enabled"); goto error_out; } ret = libxl__domain_create_info_setdefault(gc, &d_config->c_info); if (ret) goto error_out; ret = libxl__domain_make(gc, &d_config->c_info, &domid); if (ret) { LIBXL__LOG(ctx, LIBXL__LOG_ERROR, "cannot make domain: %d", ret); dcs->guest_domid = domid; ret = ERROR_FAIL; goto error_out; } dcs->guest_domid = domid; dcs->dmss.dm.guest_domid = 0; /* means we haven't spawned */ ret = libxl__domain_build_info_setdefault(gc, &d_config->b_info); if (ret) goto error_out; if (!sched_params_valid(gc, domid, &d_config->b_info.sched_params)) { LOG(ERROR, "Invalid scheduling parameters\n"); ret = ERROR_INVAL; goto error_out; } for (i = 0; i < d_config->num_disks; i++) { ret = libxl__device_disk_setdefault(gc, &d_config->disks[i]); if (ret) goto error_out; } dcs->bl.ao = ao; libxl_device_disk *bootdisk = d_config->num_disks > 0 ? &d_config->disks[0] : NULL; /* * The devid has to be set before launching the device model. For the * hotplug case this is done in libxl_device_nic_add but on domain * creation this is called too late. * Make two runs over configured NICs in order to avoid duplicate IDs * in case the caller partially assigned IDs. */ for (i = 0; i < d_config->num_nics; i++) { /* We have to init the nic here, because we still haven't * called libxl_device_nic_add when domcreate_launch_dm gets called, * but qemu needs the nic information to be complete. */ ret = libxl__device_nic_setdefault(gc, &d_config->nics[i], domid); if (ret) goto error_out; if (d_config->nics[i].devid > last_devid) last_devid = d_config->nics[i].devid; } for (i = 0; i < d_config->num_nics; i++) { if (d_config->nics[i].devid < 0) d_config->nics[i].devid = ++last_devid; } if (restore_fd >= 0) { LOG(DEBUG, "restoring, not running bootloader\n"); domcreate_bootloader_done(egc, &dcs->bl, 0); } else { LOG(DEBUG, "running bootloader"); dcs->bl.callback = domcreate_bootloader_done; dcs->bl.console_available = domcreate_bootloader_console_available; dcs->bl.info = &d_config->b_info; dcs->bl.disk = bootdisk; dcs->bl.domid = dcs->guest_domid; dcs->bl.kernel = &dcs->build_state.pv_kernel; dcs->bl.ramdisk = &dcs->build_state.pv_ramdisk; libxl__bootloader_run(egc, &dcs->bl); } return; error_out: assert(ret); domcreate_complete(egc, dcs, ret); }