i915_gem_object_is_lmem(9)

✨ i915_gem_object_is_lmem(9) ✨

okay so bestie, buckle up — this is a kernel API manual page, aka the i915_gem_object_is_lmem page from the Kernel API Manual. yes it's a mouthful, no you cannot skip it 💅

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🌸 NAME 🌸

i915_gem_object_is_lmem — literally just answers the question: is this object resident in lmem? that's it, that's the whole vibe check 🦋

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🎀 SYNOPSIS 🎀

bool i915_gem_object_is_lmem (struct drm_i915_gem_object *obj );

it returns a bool. iconic. returns a yes-or-no, a slay-or-slayn't 💖

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🫶 ARGUMENTS 🫶

• obj — the object you're checking. that's the one. the main character of this function call 👑

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🧚 DESCRIPTION 🧚

so here's the situation, ngl it's a little nuanced 🙈

even if an object is allowed to migrate and change its memory region, this function still checks whether it will always be present in lmem when valid — or, if that's not the case, whether it's currently resident in lmem. two different questions, one function, we love a multitasker ✨

for migratable and evictable objects, that second check (the "currently resident" one) only makes sense when the object is locked 🔒 — like, do not even try it unlocked, that's not the move, that's not the era 💀

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🌈 RETURN 🌈

it returns whether the object is migratable but resident in lmem, or not migratable and will be present in lmem when valid. so basically: yes in one way, or yes in the other way. either way you're getting your answer, periodt 🫶

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🔥 SEE ALSO 🔥

• Kernel file ./drivers/gpu/drm/i915/gem/i915_gem_lmem.c
• __i915_gem_object_create_lmem_with_ps(9)

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and that's the page, bestie!! 🎀✨ this little gem lives in ./drivers/gpu/drm/i915/gem, it's dated October 2026, and it's part of the Kernel API Manual — go forth and check your lmem, ily, bye 💜🦋