xe_sriov_probe_early(9)

💖 NAME 💖

xe_sriov_probe_early — probe a SR-IOV mode. yep, that's the whole vibe, and this is its page from the Kernel API Manual, bestie. 💅

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✨ SYNOPSIS ✨

void xe_sriov_probe_early (struct xe_device *xe );

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🎀 ARGUMENTS 🎀

• xe — the xe_device to probe mode on. like, that's the device we're checking, no cap.

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🦋 DESCRIPTION 🦋

okay so this function should be called only once and as soon as possible during driver probe, because its whole job is to detect whether we're running a SR-IOV Physical Function (PF) or a Virtual Function (VF) device. main character energy, honestly. ✨

SR-IOV PF mode detection is based on the PCI dev_is_pf function. iconic. 🫶

SR-IOV VF mode detection is based on dedicated MMIO register read. literally that's the vibe check. 🔥

bestie, the "only once" and "as soon as possible" parts are not decorative — that's the actual instruction, fr fr.

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🌈 SEE ALSO 🌈

• Kernel file ./drivers/gpu/drm/xe/xe_sriov.c
• xe_sriov_mode_to_string(9)
• xe_sriov_init(9)
• xe_sriov_print_info(9)
• xe_sriov_function_name(9)
• xe_sriov_init_late(9)

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mwah 💋 cute little sign-off: this page is serving the ./drivers/gpu/drm/xe source/version situation with an October 2026 date, and the star of the show is xe_sriov_probe_early(9) — periodt. 🎀