vmw_bo_dirty_unmap(9)

💅 vmw_bo_dirty_unmap(9) 💅

okay so this is a page from the Kernel API Manual, bestie, and it's about exactly one (1) little function. let's get into it 🫶

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✨ NAME ✨

vmw_bo_dirty_unmap — clears, like, all the ptes pointing to a range inside a bo. yes all of them. no crumbs left. 🧹

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🌸 SYNOPSIS 🌸

void vmw_bo_dirty_unmap (struct vmw_bo *vbo , pgoff_t start , pgoff_t
       end );

it's giving void, it's giving three args, it's giving absolutely no return value. iconic behavior honestly. ✨

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🎀 ARGUMENTS 🎀

• vbo — the buffer object. that's the whole vibe. the main character of this function, fr.
• start — the first page of the range you're working with, within the buffer object.
• end — the last page of the range within the buffer object + 1. yes, plus one. it's a half-open range bestie, don't come for me, that's just how it is 💀

careful with that + 1 — it is not optional and it is not a typo, i promise you 🙈

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🦋 DESCRIPTION 🦋

so this is basically ttm_bo_unmap_virtual, except — and this is the whole point — it takes a subrange instead of the whole thing. like yeah sure you could nuke everything, but we're being selective today. main character energy only for the pages in start..end. 💅

lowkey that's it. that's the function. obsessed with the efficiency honestly. 🔥

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👑 SEE ALSO 👑

here's the friend group, the whole squad, the found family:

• Kernel file ./drivers/gpu/drm/vmwgfx/vmwgfx_page_dirty.c
• struct vmw_bo_dirty(9)
• vmw_bo_dirty_scan_pagetable(9)
• vmw_bo_dirty_scan_mkwrite(9)
• vmw_bo_dirty_scan(9)
• vmw_bo_dirty_pre_unmap(9)
• vmw_bo_dirty_add(9)
• vmw_bo_dirty_release(9)
• vmw_bo_dirty_transfer_to_res(9)
• vmw_bo_dirty_clear_res(9)

go read those too, iykyk 💖

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aaaand that's the page!! this one lives over in ./drivers/gpu/drm/vmwgfx, dated October 2026, and it's literally called vmw_bo_dirty_unmap(9) in case you forgot already. mwah, go clear some ptes for me 🧚💜