si_dma_vm_write_pages(9)

si_dma_vm_write_pages(9) 💅✨

okay so bestie, this page is from the Kernel API Manual, and the function is literally si_dma_vm_write_pages. It’s giving “manual PTE-writing, but make it DMA” energy, and I’m obsessed. 🫶

💖 NAME 💖

si_dma_vm_write_pages — update PTEs by writing them manually. no cap, that’s the whole vibe. ✨

✨ SYNOPSIS ✨

void si_dma_vm_write_pages (struct radeon_device *rdev , struct
radeon_ib *ib , uint64_t pe , uint64_t addr , unsigned count , uint32_t
incr , uint32_t flags );

🎀 ARGUMENTS 🎀

• rdev — a radeon_device pointer. literally the first thing it asks for. 💖
• ib — indirect buffer to fill with commands. bestie, it’s getting filled. 🫶
• pe — addr of the page entry. yes, that pe. periodt. 💅
• addr — dst addr to write into pe. direct, no detours. 🌸
• count — number of page entries to update. count ’em and update ’em. 🔥
• incr — increase next addr by incr bytes. math is mathing. ✨
• flags — access flags. iconic little flags. 🎀

🌸 DESCRIPTION 🌸

Update PTEs by writing them manually using the DMA (SI). That’s it, that’s the function — the manual-writing part is the main character here. 💅

👑 SEE ALSO 👑

• Kernel file ./drivers/gpu/drm/radeon/si_dma.c
• si_dma_is_lockup(9)
• si_dma_vm_copy_pages(9)
• si_dma_vm_set_pages(9)
• si_copy_dma(9)

mwah 💋 bye bestie — source/version: ./drivers/gpu/drm/radeon, date: October 2026. 🦋💖