sdma_v4_0_vm_copy_pte(9)

🌸 NAME 🌸

okay so bestie, welcome to the Kernel API Manual ✨ this page is sdma_v4_0_vm_copy_pte — update PTEs by copying them from the GART. That's the whole main-character job, no cap 💅

✨ SYNOPSIS ✨

void sdma_v4_0_vm_copy_pte (struct amdgpu_ib *ib , uint64_t pe ,
uint64_t src , unsigned count );

🎀 ARGUMENTS 🎀

• ib — the indirect buffer to fill with commands 🫶
• pe — the addr of the page entry, iykyk
• src — the src addr to copy from
• count — the number of page entries to update

💫 DESCRIPTION 💫

the way that this updates PTEs by copying them from the GART using sDMA (VEGA10) is lowkey iconic 🔥 that's literally the vibe, fr fr.

🔥 SEE ALSO 🔥

Kernel file ./drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c 🌈

the whole friend group:

• sdma_v4_0_init_microcode(9)
• sdma_v4_0_ring_get_rptr(9)
• sdma_v4_0_ring_get_wptr(9)
• sdma_v4_0_ring_set_wptr(9)
• sdma_v4_0_page_ring_get_wptr(9)
• sdma_v4_0_page_ring_set_wptr(9)
• sdma_v4_0_ring_emit_ib(9)
• sdma_v4_0_ring_emit_hdp_flush(9)
• sdma_v4_0_ring_emit_fence(9)
• sdma_v4_0_gfx_enable(9)
• sdma_v4_0_rlc_stop(9)
• sdma_v4_0_page_stop(9)
• sdma_v4_0_ctx_switch_enable(9)
• sdma_v4_0_enable(9)
• sdma_v4_0_gfx_resume(9)
• sdma_v4_0_page_resume(9)
• sdma_v4_0_rlc_resume(9)
• sdma_v4_0_load_microcode(9)
• sdma_v4_0_start(9)
• sdma_v4_0_ring_test_ring(9)
• sdma_v4_0_ring_test_ib(9)
• sdma_v4_0_vm_write_pte(9)
• sdma_v4_0_vm_set_pte_pde(9)
• sdma_v4_0_ring_pad_ib(9)
• sdma_v4_0_ring_emit_pipeline_sync(9)
• sdma_v4_0_ring_emit_vm_flush(9)
• sdma_v4_0_emit_copy_buffer(9)
• sdma_v4_0_emit_fill_buffer(9)

xoxo, your Kernel API Manual bestie 💖 source/version: ./drivers/gpu/drm/amd/amdgpu; date: October 2026. bye babes, go update those PTEs 🦋✨