check_xtile...ainst_struct(9)

check_xtile_data_against_struct(9) 💅✨

okay so bestie, welcome to the Kernel API Manual — the header up top is stylized as check_xtile...ainst_struct(9), dots and all, and we are simply obsessed 🫶

NAME 🎀

check_xtile_data_against_struct — Check tile data state size.

SYNOPSIS ✨

int check_xtile_data_against_struct (int size );

ARGUMENTS 🦋

• size — The tile data state size.

DESCRIPTION 🌸

Okay so picture this: it calculates the state size by multiplying the single tile size — the one recorded in a C struct — by the number of tiles that the CPU informs. Then it compares the provided size with that calculation. That's the whole vibe, no cap 💅

RETURN 🌈

• 0 on success 🎉
• -EINVAL on mismatch 😭

SEE ALSO 👑

• Kernel file ./arch/x86/kernel/fpu/xstate.c
• __copy_xstate_to_uabi_buf(9)
• copy_xstate_to_uabi_buf(9)
• copy_uabi_to_xstate(9)
• xsaves(9)
• xrstors(9)
• fpstate_realloc(9)
• fpu_xstate_prctl(9)

that's the whole page, bestie 💖 this lil' slice of docs comes from ./arch/x86/kernel/fpu, dated October 2026, and the footer title is still doing its check_xtile...ainst_struct(9) thing. slay 🎀✨