iopf_queue_flush_dev(9)

🌸 NAME 🌸

okay bestie, welcome to iopf_queue_flush_dev(9) from the Kernel API Manual — this one is literally about making sure that all queued faults have been processed. No cap, the name is the whole assignment. 💅✨

🦋 SYNOPSIS 🦋

int iopf_queue_flush_dev (struct device *dev );

🎀 ARGUMENTS 🎀

• dev — the endpoint whose faults need to be flushed. That's the main character here, fr fr. 🫶

💖 DESCRIPTION 💖

So here's the tea: the IOMMU driver calls this before releasing a PASID, to ensure that all pending faults for this PASID have been handled, and won't hit the address space of the next process that uses this PASID. It's giving cleanup era, and honestly? iconic. 🌈

The driver must make sure that no new fault is added to the queue. 🚨

bestie, this part is not optional: in particular it must flush its low-level queue before calling this function. That's a hard requirement, not a vibe suggestion. 💀💅

⭐ RETURN ⭐

0 on success and <0 on error. Short, sweet, and to the point — periodt. 💜

🔥 SEE ALSO 🔥

Kernel file ./drivers/iommu/io-pgfault.c is the home base, and the whole friend group is:

• iommu_report_device_fault(9)
• iopf_group_response(9)
• iopf_group_dequeue(9)
• iopf_queue_discard_partial(9)
• iopf_queue_add_device(9)
• iopf_queue_remove_device(9)
• iopf_queue_alloc(9)
• iopf_queue_free(9)

byeee 🎀 this page comes from ./drivers/iommu, and the version/date on the original footer is October 2026 — mention done, mwah. 💖✨