xe_validation_assert_exec(9)

okay so bestie, welcome to xe_validation_assert_exec — a little page straight out of the ✨ Kernel API Manual ✨, and honestly? it's giving "tiny function, big opinions." let's get into it 💅

🎀 NAME 🎀

xe_validation_assert_exec — it asserts that the drm_exec pointer is actually suitable for validation. that's the whole gig. no cap 💖

🌸 SYNOPSIS 🌸

void xe_validation_assert_exec (const struct xe_device *xe , const
       struct drm_exec *exec , const struct drm_gem_object *obj );

🦋 ARGUMENTS 🦋

• xe — pointer to the xe device. your main character device, fr fr.
• exec — the drm_exec pointer we're checking. this is the one on trial 👀
• obj — pointer to the object that's subject to validation.

💜 DESCRIPTION 💜

first things first: NULL exec pointers are not allowed. like, at all. don't even try it 🙈

now for the vibes-per-flag breakdown:

• for XE_VALIDATION_UNIMPLEMENTED, there is no checking. zero. none. we simply do not look ✨
• for XE_VLIDATION_OPT_OUT, we check that the caller is a kunit test. (yes, that's literally how it's spelled in the source — not me, i promise 💀)
• for XE_VALIDATION_UNSUPPORTED, we check that the object subject to validation is a dma-buf — because support for ww locking is not in place in the dma-buf layer, iykyk 😭

so like, the function doesn't really do anything to your data — it just vibes-checks your arguments and asserts. very "i'm not mad, i'm just disappointed" energy 🫶

🌈 SEE ALSO 🌈

• Kernel file ./drivers/gpu/drm/xe/xe_validation.c — the source of truth, go read it bestie 📖
• xe_validation_ctx_init(9)
• xe_validation_exec_lock(9)
• xe_validation_ctx_fini(9)
• xe_validation_should_retry(9)

and that's the page!! brought to you by the fine folks over at ./drivers/gpu/drm/xe, dated October 2026, living its best life as xe_validation_assert_exec(9). slay, stay validated, mwah 💖🎀🦋✨