iommu_group_remove_device(9)

🎀 NAME 🎀

okay so bestie, welcome to iommu_group_remove_device(9) from the Kernel API Manual — the function whose entire iconique job is remove a device from its current group. that's the name, that's the assignment, we're slaying. 💅✨

✨ SYNOPSIS ✨

void iommu_group_remove_device (struct device *dev );

🌸 ARGUMENTS 🌸

• dev — the device to be removed. yep, that's the one getting un-grouped, no cap. 🫶

💖 DESCRIPTION 💖

okay so here's the tea ☕: this function is called by an iommu driver to remove the device from its current group. and it decrements the iommu group reference count — that refcount goes down by one, bestie. that's the whole move. ✨

it's giving "leave the group chat" energy, but make it kernel. 🦋

🦋 SEE ALSO 🦋

• Kernel file ./drivers/iommu/iommu.c
• 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_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)
• pci_dev_reset_iommu_done(9)
• iommu_dma_prepare_msi(9)

mwah 💋 — source/version: ./drivers/iommu · date: October 2026