mtrr_save_state(9)

💅 mtrr_save_state(9) — like, the Kernel API Manual page, bestie ✨

Okay so real talk, this is a page straight outta the Kernel API Manual and it's about one tiny little function that does one tiny little thing. No cap, it's short. But it ate, and we're gonna read it together 🫶

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✨ NAME ✨

mtrr_save_state — saves the current fixed-range MTRR state of the first cpu in cpu_online_mask 💖

That's it. That's the whole job. First CPU in the mask, fixed-range MTRR state, snatched and saved. Iconic behaviour honestly.

🌸 SYNOPSIS 🌸

void mtrr_save_state (void );

Look at her. No args, no return, just vibes and a void. 👑

🎀 ARGUMENTS 🎀

• void — no arguments. Zero. None. She takes nothing and she gives... well, she saves state. That's the gift. 🎁

Ngl it's giving "I don't need input, I am the input" energy. Main character function fr fr 💀

🦋 SEE ALSO 🦋

The kernel file where she lives, in all her glory:

./arch/x86/kernel/cpu/mtrr/mtrr.c

And her whole friend group, all mutuals, all slaying in their own lane:

• mtrr_rendezvous_handler(9)
• set_mtrr(9)
• mtrr_add_page(9)
• mtrr_add(9)
• mtrr_del_page(9)
• mtrr_del(9)
• arch_phys_wc_add(9)
• mtrr_bp_init(9)

Go read them too, iykyk 🌈 — the whole MTRR cinematic universe is right there waiting for you bestie.

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No warnings, no bugs, no exit statuses on this one — she's a clean little function and we respect her for it 💜

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And that's the page!! Sourced from ./arch/x86/kernel/cpu/mtrr, dated October 2026, and honestly? October 2026 could never be as iconic as this function. Periodt. 🍓✨🎀