xe_pci_sriov_configure(9)

💖 xe_pci_sriov_configure(9) 💖

okay bestie, welcome to the Kernel API Manual ✨ this one's a little function with main character energy — it's the Xe driver's hook for turning SR-IOV virtual functions on and off. let's get into it 🫶

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✨ SYNOPSIS ✨

int xe_pci_sriov_configure (struct pci_dev *pdev , int num_vfs );

like, that's the whole signature. cute, right? 🎀

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🌸 ARGUMENTS 🌸

• pdev — the pci_dev. literally the PCI device we're doing all this for 💅
• num_vfs — the number of VFs to enable, or zero to disable all VFs. zero = bye bye, all of them 🙈

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🦋 DESCRIPTION 🦋

so this is the Xe implementation of the struct pci_driver.sriov_configure callback. no cap, that's exactly what it is 🔥

and here's the vibe: this callback gets called by the PCI subsystem to enable or disable SR-IOV Virtual Functions (VFs) — as requested by the user via the PCI sysfs interface. so like, the user pokes sysfs, the PCI subsystem goes "say less", and it rings this function up 📞✨

ngl, this is the plug-in point — the whole VF enable/disable pipeline runs through here, so it's kind of a big deal 👑

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⭐ RETURN ⭐

returns the number of configured VFs 🎉 …or a negative error code on failure 😭 (iykyk, always check your error codes, bestie)

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🌈 SEE ALSO 🌈

• Kernel file ./drivers/gpu/drm/xe/xe_pci_sriov.c
• xe_pci_sriov_get_vf_pdev(9)

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that's the whole page, bestie, you ate that 💅

okay and for the cute little sign-off: this icon lives over in ./drivers/gpu/drm/xe 🧚 and the version/date stamp on it is October 2026 ⭐ so yeah, future-coded fr fr. mwah, go configure some VFs responsibly 💖🎀🦋