iommu_copy_s...l_user_array(9)

🌸 NAME 🌸

iommu_copy_struct_from_full_user_array — Copy iommu driver specific user space data from an iommu_user_data_array 💅

okay so this is the Kernel API Manual page for iommu_copy_s...l_user_array(9), and it's literally about copying a whole user array into your driver's data holder. Bestie, the vibes are "kernel plumbing but make it cute" 🎀

✨ SYNOPSIS ✨

int iommu_copy_struct_from_full_user_array (void *kdst , size_t
kdst_entry_size , struct iommu_user_data_array *user_array , unsigned
int data_type );

🦋 ARGUMENTS 🦋

• kdst — Pointer to an iommu driver specific user data that is defined in include/uapi/linux/iommufd.h 👑
• kdst_entry_size — sizeof(*kdst) — like, literally that. 🫶
• user_array — Pointer to a struct iommu_user_data_array for a user space array 🍓
• data_type — The data type of the kdst. Must match with user_array->type — no cap, they gotta match. 💅

💖 DESCRIPTION 💖

Copy the entire user array. ✨ kdst must have room for kdst_entry_size * user_array->entry_num bytes. Return 0 for success, otherwise -error. That's the whole tea, bestie — don't forget the room math or it's giving sadness 😭

🌈 SEE ALSO 🌈

The kernel file is ./include/linux/iommu.h — and here's the whole bestie squad of references, every single one:

• struct iommu_fault_page_request(9)
• struct iommu_fault(9)
• enum iommu_page_response_code(9)
• struct iommu_page_response(9)
• struct iopf_queue(9)
• struct iommu_resv_region(9)
• struct iommu_iotlb_gather(9)
• struct iommu_dirty_bitmap(9)
• struct iommu_dirty_ops(9)
• struct iommu_user_data(9)
• struct iommu_user_data_array(9)
• __iommu_copy_struct_from_user(9)
• iommu_copy_struct_from_user(9)
• __iommu_copy_struct_from_user_array(9)
• iommu_copy_struct_from_user_array(9)
• __iommu_copy_struct_to_user(9)
• iommu_copy_struct_to_user(9)
• struct iommu_ops(9)
• struct iommu_domain_ops(9)
• struct iommu_device(9)
• struct iommu_fault_param(9)
• struct dev_iommu(9)
• iommu_iotlb_gather_is_disjoint(9)
• iommu_iotlb_gather_add_range(9)
• iommu_iotlb_gather_add_page(9)
• struct iommu_fwspec(9)
• struct iommu_sva(9)
• iommu_map_sgtable(9)

mwah 💖 that's the whole page! This one lives in ./include/linux, is dated October 2026, and its footer name is iommu_copy_s...l_user_array(9) — bye bestie, go copy those arrays responsibly 🫶✨