amd_set_mtrr(9)

💅 amd_set_mtrr(9) 💅

okay so welcome to the Kernel API Manual, bestie — this is the page for amd_set_mtrr(9), and it is literally about setting a variable MTRR register on the local CPU. iconic little kernel-function energy, no cap 🫶

🌸 NAME 🌸

amd_set_mtrr — Set variable MTRR register on the local CPU.

✨ SYNOPSIS ✨

void amd_set_mtrr (unsigned int reg , unsigned long base , unsigned long
       size , mtrr_type type );

🎀 ARGUMENTS 🎀

• reg — -- undescribed -- 🙈 the manpage says it, not me!
• base — -- undescribed -- 💀
• size — -- undescribed -- 😭
• type — -- undescribed -- 🫠

💖 DESCRIPTION 💖

okay so here's the actual tea, bestie: reg is the register to set. base is the base address of the region. size is the size of the region — and if this is 0, the region is disabled. type is the type of the region. that's the whole rundown ✨

and yeah: it returns nothing. no return value, no little gift, just vibes 💅

🔥 SEE ALSO 🔥

• Kernel file ./arch/x86/kernel/cpu/mtrr/amd.c 👀

mwah 💋 that's the whole page, bestie. source/version is ./arch/x86/kernel/cpu/mtrr, dated October 2026 — slay and goodbye 🫶✨