xe_pxp_key_assign(9)

💅 xe_pxp_key_assign — Kernel API Manual 🎀

okay bestie, so this is a page from the Kernel API Manual and it's all about one lil function that's honestly doing the most important background job ever: marking a BO as "yeah babe, I'm on the current PXP key iteration" ✨

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🌸 NAME 🌸

xe_pxp_key_assign — lowkey just flags a BO as using the current PXP key iteration, no cap 👑

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🦋 SYNOPSIS 🦋

int xe_pxp_key_assign (struct xe_pxp *pxp , struct xe_bo *bo );

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💖 ARGUMENTS 💖

• pxp — the xe->pxp pointer, bestie. And heads up: it's gonna be NULL if PXP is disabled, so like… vibe check it first 🙈
• bo — the BO you're marking. this is the main character of the whole function tbh 💅

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⭐ RETURN ⭐

• -ENODEV if PXP is disabled 😭 (it's giving "not today")
• 0 otherwise 🫶 slay

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🌈 SEE ALSO 🌈

• Kernel file ./drivers/gpu/drm/xe/xe_pxp.c — the source, iykyk
• PXP(9)
• xe_pxp_get_readiness_status(9)
• xe_pxp_irq_handler(9)
• xe_pxp_init(9)
• xe_pxp_exec_queue_set_type(9)
• xe_pxp_exec_queue_add(9)
• xe_pxp_exec_queue_remove(9)
• xe_pxp_bo_key_check(9)
• xe_pxp_obj_key_check(9)
• xe_pxp_pm_suspend(9)
• xe_pxp_pm_resume(9)

like, the whole PXP friend group fr fr 🧚 go read them all, they're iconic 💜

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ngl this one's short but it's important — if pxp is NULL you're getting -ENODEV and that's that, no cap 💀

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and that's the whole page bestie!! source/version is ./drivers/gpu/drm/xe, dated October 2026, and the footer title is xe_pxp_key_assign(9) — mwah, drink some water, and go mark those BOs 💖✨🎀