xe_sriov_vfio_data_write(9)

💖 xe_sriov_vfio_data_write(9) — the kernel API manual, bestie edition 💖

okay so this is the xe_sriov_vfio_data_write(9) page from the Kernel API Manual, and it's literally all about writing migration data to the VF device. no cap, that's the whole vibe. let's get into it 🫶

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✨ NAME ✨

xe_sriov_vfio_data_write — Write migration data to the VF device. that's it, that's the job 💅

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🌸 SYNOPSIS 🌸

ssize_t xe_sriov_vfio_data_write (struct xe_device *xe , unsigned int
vfid , const char __user *buf , size_t len );

like, copy that exactly, bestie — every type and every comma matters 🔥

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🎀 ARGUMENTS 🎀

• xe — the PF xe_device you get by calling xe_sriov_vfio_get_pf. gotta have the right device first, iykyk 💜
• vfid — the VF identifier, and it can't be 0 🚨 like, zero is not invited to this party, periodt.
• buf — start address of the userspace buffer. that's where the data lives before we write it ✨
• len — the requested write size from userspace. how many bytes are we talking about, bestie? 🦋

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⭐ RETURN ⭐

returns the number of bytes that has been successfully written, or -errno on failure. so if something goes wrong, you're getting that negative errno vibe 😭

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👑 SEE ALSO 👑

• Kernel file ./include/drm/intel/xe_sriov_vfio.h
• xe_sriov_vfio_get_pf(9)
• xe_sriov_vfio_migration_supported(9)
• xe_sriov_vfio_flr_prepare(9)
• xe_sriov_vfio_wait_flr_done(9)
• xe_sriov_vfio_suspend_device(9)
• xe_sriov_vfio_resume_device(9)
• xe_sriov_vfio_stop_copy_enter(9)
• xe_sriov_vfio_stop_copy_exit(9)
• xe_sriov_vfio_resume_data_enter(9)
• xe_sriov_vfio_resume_data_exit(9)
• xe_sriov_vfio_error(9)
• xe_sriov_vfio_data_read(9)
• xe_sriov_vfio_stop_copy_size(9)

like, that's the whole friend group right there — go read them too, they're iconic 💖

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and that's the page, bestie! signing off from ./include/drm/intel, October 2026, on the xe_sriov_vfio_data_write(9) manual page — stay slay, stay writing migration data to the VF device 🌈💅