STRUCT ARM_CCA_TOKEN_INFO(9)

💅 struct arm_cca_token_info(9) — Kernel API Manual, but make it make sense

okay so bestie, welcome to the glow-up of struct arm_cca_token_info(9) from the Kernel API Manual ✨ this is literally the descriptor for the token buffer, and she's small but she's doing the work 🎀

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🌸 NAME 🌸

struct arm_cca_token_info — a descriptor for the token buffer. that's it, that's the whole vibe. she describes the token buffer. icon behavior 💅

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✨ SYNOPSIS ✨

here's the whole struct, character for character, no cap — copy it exactly pls 🙏

struct arm_cca_token_info {
    phys_addr_t granule;
    unsigned long   offset;
 };

two members. two. that's the entire squad and honestly? they ate 🫶

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🦋 Members 🦋

• granule — the PA of the granule to which the token will be written. yes, PA = physical address, she's giving low-level main character energy 🔥
• offset — the offset within the granule to the start of the buffer, and it's in bytes 🍓 don't forget the bytes, bestie, the bytes matter.

lowkey a two-field struct but highkey essential — get the granule wrong and the token goes to the wrong physical place. no pressure 😭

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👑 SEE ALSO 👑

• Kernel file ./drivers/virt/coco/arm-cca-guest/arm-cca-guest.c
• arm_cca_attestation_continue(9)
• arm_cca_report_new(9)
• arm_cca_guest_init(9)
• arm_cca_guest_exit(9)

go read the friends, they're all in the same friend group fr fr 💜

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🧚 the sign-off 🧚

that's the page, bestie 🌈 this lil slice of documentation lives in ./drivers/virt/coco/arm-cca-guest and it's dated October 2026 — so yeah, she's from the future, deal with it ⭐ anyway slay, go write some tokens to the correct granule at the correct byte offset, and drink water 💖🦋🎀