si_dma_vm_copy_pages(9)

✨ si_dma_vm_copy_pages(9) ✨

okay so bestie, welcome to the si_dma_vm_copy_pages page — it's in section 9 of the kernel API manual, and it's honestly a little baddie that just moves page table entries around 💅

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💖 NAME 💖

si_dma_vm_copy_pages — update PTEs by copying them from the GART 🫶

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🌸 SYNOPSIS 🌸

void si_dma_vm_copy_pages (struct radeon_device *rdev , struct radeon_ib
*ib , uint64_t pe , uint64_t src , unsigned count );

like, it literally returns void, no cap — it's not coming back to tell you how it went 😭

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🎀 ARGUMENTS 🎀

• rdev — a radeon_device pointer, the whole device vibe check 👑
• ib — the indirect buffer you're filling with commands, it's giving "the actual to-do list" ✨
• pe — addr of the page entry, that's where we're writing, periodt
• src — src addr where to copy from, the origin story 🦋
• count — number of page entries to update, so like how many we're doing 💀

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🔥 DESCRIPTION 🔥

Update PTEs by copying them from the GART using the DMA (SI). 🧚

That's the whole thing bestie, that's the assignment — copy the page table entries straight out of the GART with the DMA on SI. iconic, lowkey efficient, ate 🌈

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⭐ SEE ALSO ⭐

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

go read those too, iykyk 💜

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ngl the source lives in ./drivers/gpu/drm/radeon and this one's dated October 2026 — so like, future girlie things fr fr. anyway that's the whole si_dma_vm_copy_pages(9) page, mwah 💋 🍓