VFID(9)

💅 VFID 💅

okay so welcome to the Kernel API Manual, bestie — you're on the page for VFID, aka Virtual Function Identifier. It's a tiny macro and honestly it's giving “small but iconic.” Let's get into it. ✨

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🌸 NAME 🌸

VFID — Virtual Function Identifier. No cap, that's the whole name, and it's literally the moment. 🎀

🦋 SYNOPSIS 🦋

VFID (n );

That's the whole call, bestie — exactly as written. 🫶

💖 ARGUMENTS 💖

• n — the VF number. That's the one and only argument, main character energy.

🔥 DESCRIPTION 🔥

This is a helper macro to represent the Virtual Function (VF) Identifier. Think of it as a tiny little label-maker for VFs. 💅

VFID(0) is used as an alias to the PFID that represents the Physical Function. So yeah, zero is not out here doing regular VF stuff — it's the PF alias, periodt. 👑

💀 NOTE 💀

According to the PCI spec, SR-IOV VF's numbers are 1-based — so they go VF1, VF2, ... and that's the numbering vibe. No zero-based shenanigans for the VFs themselves, iykyk. 🧚

🌈 SEE ALSO 🌈

• Kernel file ./drivers/gpu/drm/xe/xe_sriov_types.h
• enum xe_sriov_mode(9)

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mwah 💋 bye bestie — this cutie was brought to you by ./drivers/gpu/drm/xe, October 2026, and VFID(9). 🫶🌸