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radv: rewrite a comment explaining why PFP waits for ME with streamout

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Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/40327>
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Samuel Pitoiset 2026-03-10 18:21:58 +01:00 • committed by Marge Bot
parent d9420eed9e
commit dfdaf6a277
1 changed files with 2 additions and 2 deletions
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4
src/amd/vulkan/radv_cmd_buffer.c
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@ -15543,8 +15543,8 @@ radv_emit_strmout_buffer(struct radv_cmd_buffer *cmd_buffer, const struct radv_d
radeon_end();
if (gfx_level >= GFX10) {
/* Emitting a COPY_DATA packet should be enough because RADV doesn't support preemption
* (shadow memory) but for unknown reasons, it can lead to GPU hangs on GFX10+.
/* Make sure that PFP waits for ME to avoid a race condition because the data is written by
* STRMOUT_BUFFER_UPDATE in ME, but LOAD_CONTEXT_REG_INDEX is in PFP.
*/
ac_emit_cp_pfp_sync_me(cs->b, false);