xe_memirq_init(9)

💅 xe_memirq_init — kernel API manual, but make it cute ✨

okay so real talk, bestie, we're looking at xe_memirq_init from the kernel API manual (section 9, the driver-facing one 🎀). lowkey this little function is doing a lot of behind-the-scenes work and honestly? she's kind of the backbone of the whole memory-based interrupt situation. let's get into it 🫶

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✨ SYNOPSIS ✨

int xe_memirq_init (struct xe_memirq *memirq );

that's it. one function, one argument, returns an int. slay. 💅

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🎀 ARGUMENTS 🎀

• memirq — the xe_memirq you're initializing 💖 this is the thing getting all the setup love.

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🌸 DESCRIPTION 🌸

so what does she actually do? she allocates the Interrupt Source Report Page and the Interrupt Status Report Page — both of which are the pages used by Memory Based Interrupts. two pages, one purpose, main character energy fr fr ✨

and the best part? these allocations are managed, which means they get implicitly released on unload. no manual cleanup era, we love a self-sufficient queen 👑

⚠️ ok but listen — if this function fails, the driver won't be able to operate correctly. that's not a vibe. that's a whole problem. 💀

and if Memory Based Interrupts aren't used at all? she just returns 0 and minds her business. iconic, honestly. 🌈

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⭐ RETURN ⭐

• 0 on success 🎉
• a negative error code on failure 😭

that's the whole contract. simple, clean, no cap.

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🦋 SEE ALSO 🦋

the whole friend group, gathered for you:

• Kernel file ./drivers/gpu/drm/xe/xe_memirq.c
• Memory Based Interrupts(9)
• Memory Based Interrupts Page Layout(9)
• xe_memirq_source_ptr(9)
• xe_memirq_status_ptr(9)
• xe_memirq_enable_ptr(9)
• xe_memirq_init_guc(9)
• xe_memirq_reset(9)
• xe_memirq_postinstall(9)
• xe_memirq_hwe_handler(9)
• xe_memirq_guc_sw_int_0_irq_pending(9)
• xe_memirq_handler(9)

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and that's the page, bestie 💜 brought to you by the good people over in ./drivers/gpu/drm/xe, dated October 2026, page xe_memirq_init(9). go forth and initialize responsibly 🧚✨🍓