xe_hw_error_irq_handler(9)

💅 xe_hw_error_irq_handler(9) 💅

okay bestie, so this little icon is from the Kernel API Manual and it's genuinely one of those "small function, big responsibility" situations 🫶 she handles the irq for hw errors, and honestly? she ate.

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✨ NAME ✨

xe_hw_error_irq_handler — irq handling for hw errors 🔥

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🎀 SYNOPSIS 🎀

void xe_hw_error_irq_handler (struct xe_tile *tile , const u32 master_ctl );

like, that's the whole signature. no notes. iconic.

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🌸 ARGUMENTS 🌸

• tile — the tile instance 💖 (yes, a tile, as in one of those, you know the one)
• master_ctl — the value read from the master interrupt register ⭐

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🦋 DESCRIPTION 🦋

so. Xe platforms are extra and add three error bits to the master interrupt register to support error handling 👑

these three bits are literally there to convey the class of error, and the classes are:

• FATAL 💀
• NONFATAL 😭
• CORRECTABLE ✨

to actually process the interrupt, you determine the source of the error by reading the Device Error Source Register — and bestie, you read the one that corresponds to the class of error being serviced 🎯 like, match the register to the class, no cap.

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🌈 SEE ALSO 🌈

• Kernel file ./drivers/gpu/drm/xe/xe_hw_error.c
• xe_hw_error_init(9) 🧚

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ngl, if you're deep in the error path at 3am, this page is your bestie fr fr 💜

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okay that's the whole vibe check, mwah 💅 source/version is ./drivers/gpu/drm/xe, dated October 2026 — she's fresh, she's giving main character energy, periodt 🍓👑