STRUCT SEV_USER_DATA_SNP_STATUS(9)

💅 struct sev_user_data_snp_status(9) 💅

okay so this is a page from the Kernel API Manual, and bestie, it's literally the glow-up tour of struct sev_user_data_snp_status — the SNP status struct, no cap. It's giving "firmware receipts, but make it a C struct" ✨

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🌸 NAME 🌸

struct sev_user_data_snp_status — SNP status. that's it, that's the whole vibe check 🎀

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✨ SYNOPSIS ✨

struct sev_user_data_snp_status {
    __u8 api_major;
    __u8 api_minor;
    __u8 state;
    __u8 is_rmp_initialized:1;
    __u8 rsvd:7;
    __u32 build_id;
    __u32 mask_chip_id:1;
    __u32 mask_chip_key:1;
    __u32 vlek_en:1;
    __u32 feature_info:1;
    __u32 rapl_dis:1;
    __u32 ciphertext_hiding_cap:1;
    __u32 ciphertext_hiding_en:1;
    __u32 rsvd1:25;
    __u32 guest_count;
    __u64 current_tcb_version;
    __u64 reported_tcb_version;
 };

like, look at all those bitfields. the way they packed everything in there? iconic. bitfield packing is so main character energy 💅

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🦋 Members 🦋

okay so let's go through every single member one by one, because we do NOT skip details in this house 🫶

• api_major — the API major version. the big number. the "era" of the API, iykyk 💖
• api_minor — the API minor version. the little number that rides along with the major one ✨
• state — the current platform state. where the platform is at, emotionally. (no but fr, it's the current platform state) 🎀
• is_rmp_initialized — whether RMP is initialized or not. one single bit deciding its whole fate 😭
• rsvd — reserved. do not touch, she's not for you 🙈
• build_id — the firmware build id for the API version. the firmware's birth certificate fr fr 🦋
• mask_chip_id — whether chip id is present in attestation reports or not ⭐
• mask_chip_key — whether attestation reports are signed or not 🔥
• vlek_en — VLEK (Version Loaded Endorsement Key) hashstick is loaded. yes that's the actual name. yes it's a lot. we love her anyway 👑
• feature_info — whether SNP_FEATURE_INFO command is available. a whole command hidden behind one bit, lowkey iconic 💜
• rapl_dis — whether RAPL is disabled 🌈
• ciphertext_hiding_cap — whether the platform has ciphertext hiding capability. capability, bestie, not the actual hiding — that's the next one 👀
• ciphertext_hiding_en — whether ciphertext hiding is enabled. and there's the follow-through 💫
• rsvd1 — reserved. again. she's got 25 bits of "mind your business" 💀
• guest_count — the number of guest currently managed by the firmware. yes, "guest", singular, that's literally what the original says, don't come for me 🙈
• current_tcb_version — current TCB version 👑
• reported_tcb_version — reported TCB version. two versions, one struct, they're sisters not twins 🎀

ngl the bitfields are doing a lot of heavy lifting here and honestly? ate. no crumbs. ✨

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🧚 SEE ALSO 🧚

• Kernel file ./include/uapi/linux/psp-sev.h struct
• sev_user_data_status(9)
• struct sev_user_data_pek_csr(9)
• struct sev_user_data_pdh_cert_export(9)
• struct sev_user_data_get_id(9)
• struct sev_user_data_get_id2(9)
• struct sev_user_data_snp_config(9)
• sev_issue_cmd(9)

like, go read her friends too, they're all in the same group chat 🫶

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and that's the whole page, bestie!! mwah 💖 this little number lives in ./include/uapi/linux and it's dated October 2026 — remember us when you're deep in the bitfields, okay? slay, stay hydrated, and don't touch the reserved bits 🎀✨💅