sev_module_init(9)

💖 sev_module_init(9) — the Kernel API Manual glow-up 🎀

okay so bestie, we're in the Kernel API Manual today and the star of the show is sev_module_init(9) — yes that's a section-9 manpage, yes we're reading kernel API docs for fun now, that's just the era we're in 💅

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✨ NAME ✨

sev_module_init — perform PSP SEV module initialization

like, literally the function that kicks off the whole PSP SEV module init situation 🔥

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🦋 SYNOPSIS 🦋

int sev_module_init (void );

no cap, that's the whole signature. int goes in, void goes in the parens, good vibes come out (hopefully) 🌸

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🎀 ARGUMENTS 🎀

• void — no arguments. none. zero. the void is the vibe. she takes nothing and she gives everything 🫶

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⭐ RETURN ⭐

• 0 — if the PSP module is successfully initialized. slay 💖
• negative value — if the PSP module initialization fails 😭 not the vibe, but at least you know

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🌈 SEE ALSO 🌈

so many friends, so many structs, it's giving family reunion 👑

The kernel file ./include/linux/psp-sev.h — go say hi to her:

• 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_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)

and the function besties:

• 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)

periodt. that's the whole friend group 💜

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ngl bestie, this is kernel-land API documentation — read it, love it, but don't expect it to do your laundry 🙈

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this iconic little page lives at ./include/linux, dated October 2026, and it's part of the Kernel API Manual — mwah, go read the source, ily, bye 🧚💖✨