set_fixed_range(9)

💖 NAME 💖

okay so bestie, welcome to set_fixed_range(9) — part of the Kernel API Manual 📖✨. This page checks & updates a fixed-range MTRR if it differs from the value it should have 👀💅. That's the whole assignment, no cap.

✨ SYNOPSIS ✨

void set_fixed_range (int msr , bool *changed , unsigned int *msrwords
       );

It's void, so there's literally no return value to obsess over 💀🫶.

🎀 ARGUMENTS 🎀

• msr — the MSR address of the MTTR which should be checked and updated 🔍
• changed — pointer which indicates whether the MTRR needed to be changed 🦋
• msrwords — pointer to the MSR values which the MSR should have 💜

🌈 SEE ALSO 🌈

• Kernel file ./arch/x86/kernel/cpu/mtrr/generic.c 📂
• guest_force_mtrr_state(9)
• mtrr_type_lookup(9)
• generic_get_free_region(9)
• set_fixed_ranges(9)
• set_mtrr_state(9)
• generic_set_mtrr(9)

go check these out too, iykyk 👑✨

ok bye bestie 🫶 source/version: ./arch/x86/kernel/cpu/mtrr · date: October 2026 · page: set_fixed_range(9) 💅✨