sdma_v5_0_ri...mit_vm_flush(9)
sdma_v5_0_ri...mit_vm_flush(9) π β¨
okay so bestie, this page lives in the Kernel API Manual (yes that's the manual name, we're fancy) and the header got cut off mid-word like it was too excited to finish β sdma_v5_0_ri...mit_vm_flush(9), iconic honestly. Anyway. Let's get into it π«Ά
πΈ NAME πΈ
sdma_v5_0_ring_emit_vm_flush β vm flush using sDMA
like, it emits a VM flush through sDMA. that's the whole vibe. β¨
π¦ SYNOPSIS π¦
void sdma_v5_0_ring_emit_vm_flush (struct amdgpu_ring *ring , unsigned
vmid , uint64_t pd_addr );
no cap, that's the signature, copy it exactly, don't be weird about it π
π ARGUMENTS π
ringβ anamdgpu_ringpointer. it's the ring, bestie. the ring!! πvmidβ the vmid number to use. yes, to use. that's the assignment. πpd_addrβ an address. that's it. that's the whole description. giving minimal main character energy π
π DESCRIPTION π
so what does it actually do? it updates the page table base and then flushes the VM TLB using sDMA, specifically on NAVI10. that's the tea, and honestly? slay. two jobs, one function, no notes π
π§ SEE ALSO π§
first up, the file this whole thing lives in:
Kernel file ./drivers/gpu/drm/amd/amdgpu/sdma_v5_0.c
and now the whole friend group β every single one, because we do not leave anyone out of the group chat π―ββοΈ:
sdma_v5_0_init_microcode(9)sdma_v5_0_ring_get_rptr(9)sdma_v5_0_ring_get_wptr(9)sdma_v5_0_ring_set_wptr(9)sdma_v5_0_ring_emit_ib(9)sdma_v5_0_ring_emit_mem_sync(9)sdma_v5_0_ring_emit_hdp_flush(9)sdma_v5_0_ring_emit_fence(9)sdma_v5_0_gfx_stop(9)sdma_v5_0_rlc_stop(9)sdma_v5_0_ctx_switch_enable(9)sdma_v5_0_enable(9)sdma_v5_0_gfx_resume_instance(9)sdma_v5_0_gfx_resume(9)sdma_v5_0_rlc_resume(9)sdma_v5_0_load_microcode(9)sdma_v5_0_start(9)sdma_v5_0_ring_test_ring(9)sdma_v5_0_ring_test_ib(9)sdma_v5_0_vm_copy_pte(9)sdma_v5_0_vm_write_pte(9)sdma_v5_0_vm_set_pte_pde(9)sdma_v5_0_ring_pad_ib(9)sdma_v5_0_ring_emit_pipeline_sync(9)sdma_v5_0_emit_copy_buffer(9)sdma_v5_0_emit_fill_buffer(9)
lowkey that's a lot of cross-references and every single one matters, so don't skip a single one when you're hopping around. iykyk π
okay that's the whole page!! shoutout to the source tree at ./drivers/gpu/drm/amd/amdgpu, dated October 2026, and the page name is sdma_v5_0_ri...mit_vm_flush(9) β yes it's still truncated, no i will not fix it, it's part of the brand now ππ bye bestie, go flush those TLBs!! πππ₯
π¦ where this page comes from
- nixpkgs unstable: linux-manual 7.3.1
- π girlified by deepseek-ai/DeepSeek-V4.1-Flash-1017 on : a language model's rewrite of the original, under its terms