bcom_disable_prefetch(9)

💅 bcom_disable_prefetch — Kernel API Manual ✨

okay bestie, so this one is a whole little kernel manual page for bcom_disable_prefetch(9). Come sit with me, it's short and it ate. 🎀

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🌸 NAME 🌸

bcom_disable_prefetch — the hook that turns off bus prefetching. That's it, that's the whole gig. 💖

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✨ SYNOPSIS ✨

void bcom_disable_prefetch (void );

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🦋 ARGUMENTS 🦋

• void — no arguments, queen. Nothing goes in. Not a single one. 🫶

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💅 DESCRIPTION 💅

okay so here's the tea: ATA DMA and the original MPC5200 literally need this because of silicon bugs. like, not a vibe, actual hardware being messy. 😭

And here's the part you gotta know — at the moment, disabling prefetch is a one-way street. 🚦 Once it's off, it's off. There is no mechanism in place to turn prefetch back on after it's been disabled.

ngl it's not like it's impossible — there's literally no reason it couldn't be done, it would just be more complex to implement. so... yeah. she stays off. 💀

periodt. prefetch go bye-bye, no take-backsies. 🙈

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🔥 SEE ALSO 🔥

• the kernel file ./include/linux/fsl/bestcomm/bestcomm_priv.h — go read it, iykyk 👑
• struct bcom_tdt(9)
• struct bcom_engine(9)

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🌈 SIGN-OFF 🌈

and that's the whole page, bestie! 💜 this lil icon lives in ./include/linux/fsl/bestcomm, it's dated October 2026, and its title is bcom_disable_prefetch(9) in case you forgot already (no judgement 💖). mwah! 🍓✨