amdgpu_hmm_range_alloc(9)

✨ amdgpu_hmm_range_alloc(9) ✨

okay so bestie, welcome to the Kernel API Manual 💅 this one's all about amdgpu_hmm_range_alloc — the little function that gets your AMDGPU HMM range born and ready 🎀

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🌸 NAME 🌸

amdgpu_hmm_range_alloc — allocate and initialize an AMDGPU HMM range ✨

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🦋 SYNOPSIS 🦋

struct amdgpu_hmm_range * amdgpu_hmm_range_alloc (struct amdgpu_bo *bo
);

literally that's the whole signature, no cap 🫶

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💖 ARGUMENTS 💖

• bo — an optional buffer object to associate with this HMM range. yes bestie, it's optional, nobody's forcing you 💅

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👑 DESCRIPTION 👑

so what does it actually do? it allocates memory for amdgpu_hmm_range and associates it with the bo you passed in. and here's the part you gotta remember: the reference count of the bo gets incremented 🔥 so like, it's holding a ref for you, don't forget that.

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⭐ RETURN ⭐

it hands you back a pointer to a newly allocated struct amdgpu_hmm_range on success 💖 or NULL if the memory allocation fails 😭 (yeah, allocation can just... not happen. rude but true.)

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🌈 SEE ALSO 🌈

• Kernel file ./drivers/gpu/drm/amd/amdgpu/amdgpu_hmm.c
• MMU Notifier(9)
• amdgpu_hmm_invalidate_gfx(9)
• amdgpu_hmm_invalidate_hsa(9)
• amdgpu_hmm_register(9)
• amdgpu_hmm_unregister(9)
• amdgpu_hmm_range_valid(9)
• amdgpu_hmm_range_free(9)

like, the whole friend group fr fr 🫶 go read them too, iykyk

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and that's the page bestie!! this gem lives in ./drivers/gpu/drm/amd/amdgpu, dated October 2026, and it's page amdgpu_hmm_range_alloc(9) of the Kernel API Manual 🌸 slay, go allocate responsibly 💜🧚‍♀️