STRUCT SEV_DATA_LAUNCH_START(9)

💖 NAME 💖

okay so bestie, this is the Kernel API Manual page for struct sev_data_launch_start(9) — and it's literally the LAUNCH_START command parameters struct, no cap ✨💅

✨ SYNOPSIS ✨

       struct sev_data_launch_start {
           u32 handle;
           u32 policy;
           u64 dh_cert_address;
           u32 dh_cert_len;
           u32 reserved;
           u64 session_address;
           u32 session_len;
        };

🌸 Members 🌸

these are the fields, and every single one is getting its moment:

• handle — the handle assigned to the VM, like its little ID badge 🫶
• policy — the guest launch policy, aka the rules for the launch vibe ✨
• dh_cert_address — physical address of the DH certificate blob 📜
• dh_cert_len — len of the DH certificate blob, literally the length bestie 🔥
• session_address — physical address of the session parameters 🔑
• session_len — len of the session parameters 💫

tiny aside: reserved is right there in the struct as u32 reserved, and the original Members list doesn't give it its own description — so I'm not inventing lore for it 🙈💀

🦋 SEE ALSO 🦋

okay bestie, if you're going on the full SEV tour, these are the pages you're gonna want in your tabs 🔥:

• Kernel file ./include/linux/psp-sev.h
• struct sev_data_init(9)
• struct sev_data_init_ex(9)
• struct sev_data_pek_csr(9)
• struct sev_data_download_firmware(9)
• struct sev_data_get_id(9)
• struct sev_data_pdh_cert_export(9)
• struct sev_data_decommission(9)
• struct sev_data_activate(9)
• struct sev_data_deactivate(9)
• struct sev_data_guest_status(9)
• struct sev_data_launch_update_data(9)
• struct sev_data_launch_update_vmsa(9)
• struct sev_data_launch_measure(9)
• struct sev_data_launch_secret(9)
• struct sev_data_launch_finish(9)
• struct sev_data_send_start(9)
• struct sev_data_send_finish(9)
• struct sev_data_send_cancel(9)
• struct sev_data_receive_start(9)
• struct sev_data_receive_update_data(9)
• struct sev_data_receive_update_vmsa(9)
• struct sev_data_receive_finish(9)
• struct sev_data_dbg(9)
• struct sev_data_attestation_report(9)
• struct sev_data_snp_download_firmware(9)
• struct sev_data_snp_activate(9)
• struct sev_data_snp_addr(9)
• struct sev_data_snp_launch_start(9)
• struct sev_data_snp_launch_update(9)
• struct sev_data_snp_launch_finish(9)
• struct sev_data_snp_guest_status(9)
• struct sev_data_snp_page_reclaim(9)
• struct sev_data_snp_page_unsmash(9)
• struct sev_data_snp_dbg(9)
• struct sev_data_snp_guest_request(9)
• struct sev_data_snp_init_ex(9)
• struct sev_data_range(9)
• struct sev_data_range_list(9)
• struct sev_data_snp_shutdown_ex(9)
• struct sev_platform_init_args(9)
• struct sev_data_snp_commit(9)
• struct sev_data_snp_feature_info(9)
• struct sev_data_snp_verify_mitigation(9)
• struct sev_data_snp_verify_mitigation_dst(9)
• struct sev_snp_tcb_version_genoa_milan(9)
• struct sev_snp_tcb_version_turin(9)
• sev_module_init(9)
• sev_platform_init(9)
• sev_platform_status(9)
• sev_issue_cmd_external_user(9)
• sev_guest_deactivate(9)
• sev_guest_activate(9)
• sev_guest_df_flush(9)
• sev_guest_decommission(9)
• sev_do_cmd(9)

🎀 sign-off time: this page's source/version is ./include/linux, its date is October 2026, and its manual tag is struct sev_d...launch_start(9). bye bestie, go launch something iconic 💖🌈