xe_gt_sriov_...cess_request(9)

💅 xe_gt_sriov_pf_service_process_request — like, the whole manual page but make it make sense

okay so bestie, welcome to the Kernel API Manual ✨ (yes that's the manual name, we're fancy here). Today's main character is xe_gt_sriov_pf_service_process_request, and it's giving "the PF is doing customer service for all the VFs" energy. Buckle up 🎀

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✨ NAME ✨

xe_gt_sriov_pf_service_process_request — Service GT level SR-IOV request message from the VF. 💌

Like, a VF (virtual function) slides into the PF's DMs with a request, and this function is the one who reads it and replies. No cap.

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🦋 SYNOPSIS 🦋

int xe_gt_sriov_pf_service_process_request (struct xe_gt *gt , u32
origin , const u32 *msg , u32 msg_len , u32 *response , u32 resp_size );

That's the whole signature, character for character, don't come for me 💅

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🌸 ARGUMENTS 🌸

• gt — the xe_gt that provides the service. the icon, the server, the one actually doing the work 👑
• origin — VF number that is requesting the service. i.e. which VF is in your notifications rn 🫶
• msg — request message. the actual ask 📨
• msg_len — length of the request message (in dwords). yes, dwords, not bytes, stay woke ⭐
• response — placeholder for the response message. where you drop the reply ✨
• resp_size — length of the response message buffer (in dwords). also dwords. consistency slay 🌈

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💖 DESCRIPTION 💖

So what does it actually do? It processes Relay Message_ request from the VF. that's it, that's the whole vibe — it takes the relayed message coming up from the VF and handles it at GT level 🧚

(the Relay Message_ thing is literally written with that trailing underscore in the docs, so I'm keeping it exactly like that, iykyk 🎀)

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🔥 RETURN 🔥

It returns the length of the response message, or a negative error code on failure. so, like, a happy number or a sad negative one 😭💀

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🦄 SEE ALSO 🦄

• Kernel file ./drivers/gpu/drm/xe/xe_gt_sriov_pf_service.c
• xe_gt_sriov_pf_service_init(9)
• xe_gt_sriov_pf_service_update(9)
• xe_gt_sriov_pf_service_print_runtime(9)

go read those too, they're the friend group 💜

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and that's the page bestie 🫶 this one lives in ./drivers/gpu/drm/xe and it's stamped October 2026 — so like, future vibes only ⭐💅 periodt.