xe_sriov_pf_migration_read(9)

✨ NAME ✨

xe_sriov_pf_migration_read — bestie, this is the one that reads migration data from the device 🫶 (it's a Kernel API Manual page, section 9, if you're keeping track 💅)

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🌸 SYNOPSIS 🌸

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

okay so that's the whole signature, ssize_t return, four args, no cap. Let's break it down 👇

🦋 ARGUMENTS 🦋

• xe — the xe_device, aka the whole device vibe check. main character energy right here 👑
• vfid — the VF identifier, so we know which virtual function we're talking to 🎀
• buf — start address of the userspace buffer. this is where the data goes, bestie ✨
• len — the requested read size, coming at us straight from userspace 📏

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💜 RETURN 💜

So what do you get back? 💖

• the number of bytes that has been successfully read 🔥
• 0 if no more migration data is available (that's your "we're done here" signal, periodt) ✋
• -errno on failure 😭

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🌈 SEE ALSO 🌈

The source file, obvi:

• Kernel file ./drivers/gpu/drm/xe/xe_sriov_pf_migration.c

and the whole friend group 💅:

• xe_sriov_pf_migration_waitqueue(9)
• xe_sriov_pf_migration_supported(9)
• xe_sriov_pf_migration_disable(9)
• xe_sriov_pf_migration_init(9)
• xe_sriov_pf_migration_save_consume(9)
• xe_sriov_pf_migration_restore_produce(9)
• xe_sriov_pf_migration_write(9)
• xe_sriov_pf_migration_size(9)

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fr fr, that's every single one of them listed — go read them all, iykyk 📚✨

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and that's a wrap, bestie!! 🎀 this iconic little page lives in ./drivers/gpu/drm/xe, dated October 2026, and it's literally called xe_sriov_pf_migration_read(9) — slay, go read some migration data 💖🦋🌸