xe_bo_sg_is_contiguous(9)

💖 xe_bo_sg_is_contiguous(9) 💖

okay so this is a page from the Kernel API Manual bestie, and it's literally all about xe_bo_sg_is_contiguous — the tiny little helper that does a vibe check on your BO's DMA address space 🦋

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✨ NAME ✨

xe_bo_sg_is_contiguous — check if a BO's DMA address space is contiguous, no cap 🔥

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🎀 SYNOPSIS 🎀

bool xe_bo_sg_is_contiguous (struct xe_bo *bo , size_t len );

it's giving "one function, two arguments, one bool," and honestly? iconic 👑

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🌸 ARGUMENTS 🌸

• bo — the BO you wanna check 👀 it must have a valid sg table, i.e. !xe_bo_is_vram — so like, if that's not your situation, this is not the function for you bestie, read the room 💅
• len — the required contiguous length in bytes 📏 like how much of it you actually need to be one big happy contiguous chunk

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💜 DESCRIPTION 💜

returns true if the first len bytes of the BO are mapped to a contiguous DMA address range ✨

that's it. that's the whole lore. it checks, it returns a bool, it slays 🫶

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🧚 SEE ALSO 🧚

kernel file ./drivers/gpu/drm/xe/xe_bo.h enum ✨ plus the whole friend group:

• xe_madv_purgeable_state(9)
• xe_bo_is_purged(9)
• xe_bo_madv_is_dontneed(9)
• xe_bo_willneed_get_locked(9)
• xe_bo_willneed_put_locked(9)
• xe_bo_vma_count_inc_locked(9)
• xe_bo_vma_count_dec_locked(9)
• xe_bo_size(9)
• xe_bo_has_valid_ccs_bb(9)
• xe_bo_put_deferred(9)
• xe_bo_put_async(9)
• struct xe_bo_shrink_flags(9)
• xe_bo_is_mem_type(9)

like, the entire squad shows up. main character energy all around 😭💖

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🌈 reminder: bo has to have a valid sg table (!xe_bo_is_vram) — don't come at this function with a VRAM BO and expect contiguity tea, it's not built for that 🙈

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that's the page!! brought to you by ./drivers/gpu/drm/xe, October 2026 edition, xe_bo_sg_is_contiguous(9) — periodt 💅⭐🍓