dma_use_iova(9)

💅 dma_use_iova — the Kernel API Manual, section 9, bestie

okay so real talk, this one lives in the Kernel API Manual (that's section 9 if you're keeping score 🎀) and it's genuinely the chillest little vibe check in the whole DMA friend group. no cap.

✨ NAME ✨

dma_use_iova — the function that checks whether the IOVA API is being used for this state 👑

🦋 SYNOPSIS 🦋

bool dma_use_iova (struct dma_iova_state *state );

🌸 ARGUMENTS 🌸

• state — the IOVA state, bestie. that's it. that's the whole argument. she's lowkey self-explanatory 🫶

💖 DESCRIPTION 💖

so here's the tea: dma_use_iova returns true if the DMA transfers actually use the dma_iova_*() calls. and if they can't be used? it returns false. that's the entire plot. no plot twists, no side quests, just a clean boolean doing her little main character moment ✨

it's giving "simple but essential," fr fr 💅

🔥 SEE ALSO 🔥

• the Kernel file ./include/linux/dma-mapping.h — go read her, she's iconic 📖
• dma_unmap_sgtable(9)
• dma_sync_sgtable_for_cpu(9)
• dma_sync_sgtable_for_device(9)
• dma_get_seg_boundary_nr_pages(9)

like please, the whole friend group ate 🌈💜

and that's the page!! sign-off time: this cutie comes to you from ./include/linux, dated October 2026, and her name is dma_use_iova(9) — periodt 💀🎀🌸