pci_dev_reset_iommu_done(9)

🎀 NAME 🎀

Okay so this page is pci_dev_reset_iommu_done(9) from the Kernel API Manual, and the whole name vibe is: pci_dev_reset_iommu_done — restore IOMMU after a PCI device reset is done. 💅

✨ SYNOPSIS ✨

The signature is giving one-line wonder:

void pci_dev_reset_iommu_done (struct pci_dev *pdev );

🫶 ARGUMENTS 🫶

• pdev — PCI device that has finished a reset routine. 🫶

💖 DESCRIPTION 💖

So picture it: a PCIe device has just finished a reset routine, and it wants to restore its IOMMU activity — including new translation and cache invalidation — by re-attaching all RID/PASID of the device back to the domains retained in the core-level structure. ✨

Caller rule, no skipping: you must pair this with a successful pci_dev_reset_iommu_prepare. 🫶

Heads up bestie: even though it’s unlikely, there is a risk that re-attaching domains might fail due to some unexpected happening like OOM. 😭 So yeah, not every attach era is guaranteed-slay.

🌈 SEE ALSO 🌈

Kernel file: ./drivers/iommu/iommu.c — and the whole SEE ALSO squad is:

• iommu_device_register(9)
• iommu_insert_resv_region(9)
• iommu_group_alloc(9)
• iommu_group_get_iommudata(9)
• iommu_group_set_iommudata(9)
• iommu_group_set_name(9)
• iommu_group_add_device(9)
• iommu_group_remove_device(9)
• iommu_group_mutex_assert(9)
• iommu_group_for_each_dev(9)
• iommu_group_get(9)
• iommu_group_ref_get(9)
• iommu_group_put(9)
• iommu_group_id(9)
• device_iommu_capable(9)
• iommu_group_has_isolated_msi(9)
• iommu_set_fault_handler(9)
• iommu_paging_domain_alloc_flags(9)
• iommu_attach_device(9)
• iommu_get_domain_for_dev(9)
• iommu_driver_get_domain_for_dev(9)
• iommu_attach_group(9)
• iommu_unmap(9)
• iommu_unmap_fast(9)
• report_iommu_fault(9)
• iommu_get_resv_regions(9)
• iommu_put_resv_regions(9)
• iommu_setup_default_domain(9)
• iommu_device_use_default_domain(9)
• iommu_device_unuse_default_domain(9)
• iommu_group_claim_dma_owner(9)
• iommu_device_claim_dma_owner(9)
• iommu_group_release_dma_owner(9)
• iommu_device_release_dma_owner(9)
• iommu_group_dma_owner_claimed(9)
• iommu_replace_device_pasid(9)
• iommu_attach_handle_get(9)
• iommu_attach_group_handle(9)
• iommu_detach_group_handle(9)
• iommu_replace_group_handle(9)
• pci_dev_reset_iommu_prepare(9)
• iommu_dma_prepare_msi(9)

Okay that’s the whole page! Signing off from ./drivers/iommu, dated October 2026, on pci_dev_reset_iommu_done(9) in the Kernel API Manual. Stay slay, bestie. 🎀✨