dma_sb_region_create(9)

💅 dma_sb_region_create(9) — from the Kernel API Manual, bestie 🎀

okay so picture this: you're down in the ps3 part of the kernel tree, you need a device DMA region to exist, and you've got exactly one function to call. that's her. that's the girl. ✨

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🌸 NAME 🌸

dma_sb_region_create — literally just Create a device dma region. 💖 no cap, that's the whole pitch.

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🦋 SYNOPSIS 🦋

int dma_sb_region_create (struct ps3_dma_region *r );

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✨ ARGUMENTS ✨

• r — Pointer to a struct ps3_dma_region. that's it. hand her the pointer and let her cook 🫶

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👑 DESCRIPTION 👑

so this is the lowest level dma region create routine — like, the ground floor, no layers underneath, nothing cute hiding behind it 👀. she's the one that will make the HV call to create the region. yes, that HV call. main character energy fr fr 🔥

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💜 SEE ALSO 💜

bestie, the lore is deep. go read the kernel file ./arch/powerpc/platforms/ps3/mm.c and then take a little tour through:

• struct mem_region(9)
• struct map(9)
• ps3_mm_phys_to_lpar(9)
• ps3_mm_vas_create(9)
• ps3_mm_vas_destroy(9)
• ps3_mm_region_create(9)
• ps3_mm_region_destroy(9)
• dma_sb_lpar_to_bus(9)
• dma_sb_map_pages(9)
• dma_sb_map_area(9)
• dma_sb_unmap_area(9)
• dma_sb_region_create_linear(9)
• dma_sb_region_free_linear(9)
• dma_sb_map_area_linear(9)
• ps3_mm_init(9)
• ps3_mm_shutdown(9)

like a whole friend group of functions, and you will be meeting all of them 💀🌈

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that's the whole page!! mwah 💋 this one came from ./arch/powerpc/platforms/ps3 and it's dated October 2026 — so mark your calendar, she's a libra or whatever ⭐🍓 hope this helped bestie, ily, go create some regions 💖🎀🦋