STRUCT SEV_DATA_SEND_START(9)

💖 struct sev_data_send_start(9) 💖

Okay so welcome to the struct sev_data_send_start page from the Kernel API Manual, section 9, bestie. This is the whole vibe for the SEND_START command parameters — yes, that SEND_START, capital letters and all. Buckle up. 🫶

🌸 NAME 🌸

struct sev_data_send_start — the parameters for the SEND_START command. Literally the name, no cap. 💅

✨ SYNOPSIS ✨

       struct sev_data_send_start {
           u32 handle;
           u32 policy;
           u64 pdh_cert_address;
           u32 pdh_cert_len;
           u32 reserved1;
           u64 plat_certs_address;
           u32 plat_certs_len;
           u32 reserved2;
           u64 amd_certs_address;
           u32 amd_certs_len;
           u32 reserved3;
           u64 session_address;
           u32 session_len;
        };

💖 Members 💖

• handle — handle of the VM to process. Like, which VM are we even processing? This one. 👑
• policy — policy information for the VM. The policy vibes, if you will. ✨
• pdh_cert_address — physical address containing PDH certificate. The physical address where the PDH cert is hanging out. 📍
• pdh_cert_len — len of PDH certificate. Yep, the length. 📏
• plat_certs_address — physical address containing platform certificate. Physical address, platform cert, say less. 🦋
• plat_certs_len — len of platform certificate. The length of that platform cert. 🎀
• amd_certs_address — physical address containing AMD certificate. The physical address holding the AMD cert. 💜
• amd_certs_len — len of AMD certificate. Length of the AMD cert, periodt. 🌸
• session_address — physical address containing Session data. Physical address with the Session data. 🔥
• session_len — len of session data. The session data length. 💅

Also sitting in the struct are reserved1, reserved2, and reserved3 — the manpage doesn't give them their own member blurbs, so I'm not inventing any lore here. 🙈

🌈 SEE ALSO 🌈

Kernel file: ./include/linux/psp-sev.h.

If you wanna spiral into the whole SEV cinematic universe, tap these pages:

• 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_start(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_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)

That's the tea, bestie — source/version ./include/linux, date October 2026, page struct sev_data_send_start(9). Bye! 💖✨