xe_validation_ctx_init(9)

💅 xe_validation_ctx_init(9) — like, the iconic kernel API manual moment

okay so bestie, welcome to the xe_validation_ctx_init page from the Kernel API Manual — yes, that one. grab a strawberry 🍓 and let's go, because this function is lowkey the main character of starting a validation transaction.

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✨ NAME ✨

xe_validation_ctx_init — literally just "Initialize an xe_validation_ctx". that's the whole vibe. no cap.

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🦋 SYNOPSIS 🦋

int xe_validation_ctx_init (struct xe_validation_ctx *ctx , struct
xe_validation_device *val , struct drm_exec *exec , const struct
xe_val_flags flags );

four arguments, one int coming back at you. she's serving function signature realness. 💅

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🎀 ARGUMENTS 🎀

• ctx — the xe_validation_ctx you're about to initialize. this is her moment, give her the glow-up.
• val — the xe_validation_device that represents the validation domain. think of it as the group chat everyone's trying to get into.
• exec — the struct drm_exec to use for the transaction. may be NULL, bestie. it's optional, she's flexible. 🙈
• flags — the flags used for initialization. the little settings menu of this whole operation.

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💖 DESCRIPTION 💖

so what does she actually do? 🫶

she initializes and locks an xe_validation transaction using the validation domain that val represents. that's the core slay. 🔥

she also initializes the drm_exec object, forwarding parts of flags along to the drm_exec initialization — so yeah, the flags get passed through, not all of them, parts of them, okurrr.

now the important bit, and i need you to actually read this one: the flags.exclusive flag should typically be set to false so you don't lock out all your other validators from the domain until an OOM is hit. like, sharing is caring, bestie. ✨

for testing- or final attempt purposes it can, however, be set to true. dramatic times call for dramatic flags.

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🌈 RETURN 🌈

• 0 — success, we ate. 👑
• -EINTR — if the interruptible initial locking failed with a signal pending. 😭 signal said "not today."
• -EWOULDBLOCK — returned by a failed trylock if flags.no_block is set to true. so only in that specific no-block situation, iykyk.

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🧚 SEE ALSO 🧚

• Kernel file ./drivers/gpu/drm/xe/xe_validation.c — go read the source, she's right there.
• xe_validation_assert_exec(9)
• xe_validation_exec_lock(9)
• xe_validation_ctx_fini(9)
• xe_validation_should_retry(9)

all the besties in the same friend group, fr fr. 💜

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and that's the page!! 🎀 source and version live at ./drivers/gpu/drm/xe, dated October 2026 — so go forth, init that context, and remember: exclusive = false unless it's a test or a final attempt. periodt. 💅✨🦋