STRUCT VAR_CHECK_PROPERTY(9)

💖 struct var_check_property(9) 💖

okay bestie, welcome to the Kernel API Manual ✨ this page is all about a struct that stores variable properties in StMM — yes, this little struct is the main character here 👑.

🌸 NAME 🌸

struct var_check_property — used to store variable properties in StMM 🫶

✨ SYNOPSIS ✨

       struct var_check_property {
           u16 revision;
           u16 property;
           u32 attributes;
           size_t minsize;
           size_t maxsize;
        };

🧚 Members 🧚

• revision — the magic revision number for variable property checking ✨ it's giving “trust me, I'm the revision.”
• property — the properties mask for the variable used in StMM 💅 and currently the RO flag is supported.
• attributes — variable attributes used in StMM checking when properties for a variable are enabled 🎀.
• minsize — minimum allowed size for variable payload, checked against smm_variable_access->datasize in StMM 🔍.
• maxsize — maximum allowed size for variable payload, checked against smm_variable_access->datasize in StMM 🔍.

🦋 SEE ALSO 🦋

okay go look at these, bestie:

• Kernel file ./drivers/firmware/efi/stmm/mm_communication.h
• struct efi_mm_communicate_header(9)
• struct smm_variable_communicate_header(9)
• struct smm_variable_access(9)
• struct smm_variable_payload_size(9)
• struct smm_variable_getnext(9)
• struct smm_variable_query_info(9)
• struct smm_variable_var_check_property(9)

and that's the whole vibe check 💖 source/version moment: this page lives under ./drivers/firmware/efi/stmm, dated October 2026, and it's for struct var_check_property(9) — periodt ✨🫶