swiotlb_free_tlb(9)

💅 swiotlb_free_tlb(9) 💅

okay bestie, welcome to the Kernel API Manual page for swiotlb_free_tlb(9) — and the vibe is literally cleanup era. no cap, freeing things is main character energy too 💖

🌸 NAME 🌸

swiotlb_free_tlb — free a dynamically allocated IO TLB buffer. periodt.

✨ SYNOPSIS ✨

void swiotlb_free_tlb (void *vaddr , size_t bytes , bool cc_shared );

🎀 ARGUMENTS 🎀

• vaddr — Virtual address of the buffer. it’s giving “where the buffer lives in virtual-address land” 🦋
• bytes — Size of the buffer. we love a measured queen 📏
• cc_shared — true if vaddr was allocated decrypted and must be re-encrypted before being freed. read that twice bestie, this is not a vibe check you can skip 💅

🦋 SEE ALSO 🦋

the whole friend group is tagged, iykyk:

• Kernel file: ./kernel/dma/swiotlb.c
• struct io_tlb_slot(9)
• struct io_tlb_area(9)
• swiotlb_adjust_nareas(9)
• limit_nareas(9)
• add_mem_pool(9)
• alloc_dma_pages(9)
• swiotlb_alloc_tlb(9)
• swiotlb_alloc_pool(9)
• swiotlb_dyn_alloc(9)
• __swiotlb_find_pool(9)
• swiotlb_del_pool(9)
• swiotlb_dev_init(9)
• swiotlb_align_offset(9)
• swiotlb_search_pool_area(9)
• swiotlb_search_area(9)
• swiotlb_find_slots(9)
• mem_pool_used(9)
• mem_used(9)
• swiotlb_tbl_map_single(9)
• swiotlb_del_transient(9)
• is_swiotlb_allocated(9)
• default_swiotlb_base(9)
• default_swiotlb_limit(9)

mwah 💋 this page’s source/version is ./kernel/dma, dated October 2026, and yes bestie it’s still swiotlb_free_tlb(9) — byeee 🫶