mmu_invalidate_cache(9)

💅 mmu_invalidate_cache(9) 💅

okay so this is a page from the Kernel API Manual, section 9 — bestie, you're in the kernel-functions-for-drivers part of the handbook, and the star of this page is mmu_invalidate_cache. Let's get into it 🫶

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✨ NAME ✨

mmu_invalidate_cache — she invalidates the page table cache of MMU[ID] ✨ like literally that's her whole job and she ate 💅

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🌸 SYNOPSIS 🌸

void mmu_invalidate_cache (const mmu_ID_t ID );

look at her. no return value. no drama. just vibes and one argument 🎀

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🦋 ARGUMENTS 🦋

• ID — the MMU identifier, i.e. which MMU you're talking to. that's it, that's the whole parameter 🐝

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👑 RETURN 👑

none. ngl she gives you nothing back — void is her whole personality and honestly? iconic 💀

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🔥 SEE ALSO 🔥

• Kernel file: ./drivers/staging/media/atomisp/pci/hive_isp_css_include/host/mmu_public.h — go read the header, it's giving source of truth 📖
• mmu_set_page_table_base_index(9)
• mmu_get_page_table_base_index(9)
• mmu_invalidate_cache_all(9) — the "do the whole group chat" version of this function fr fr
• mmu_reg_store(9)
• mmu_reg_load(9)

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lowkey a tiny function, highkey important — she's just one line of purpose in the NAME, one argument in the SYNOPSIS, and zero return value. no cap, that's the entire page 💖

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and that's the whole thing bestie!! 🌈 this came out of ./drivers/staging/media/atomis... (yes it's truncated in the footer, don't come for me 😭), dated October 2026, and you can find her filed under mmu_invalidate_cache(9) in the Kernel API Manual 🎀✨ slay, go invalidate some caches 💜🧚