mesa: Backport tu/autotune and reg_size_vec4 fixes for a702 - #3119
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kandru42 wants to merge 2 commits into
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mesa: Backport tu/autotune and reg_size_vec4 fixes for a702#3119kandru42 wants to merge 2 commits into
kandru42 wants to merge 2 commits into
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The autotuner in Mesa 26.0.5 does not disable tuning for small renderpasses (fewer than 5 draw calls). These RPs are difficult to hash stably across command buffers, causing the autotuner to make inconsistent GMEM/SYSMEM decisions that result in a GPU hang on A704 (Shikra). This hang reproduces with the following Vulkan sample applications: - computecullandlod - deferredmultisampling - indirectdraw Pull in upstream Mesa commit bf2777c013 (tu/autotune: Disable autotuning for small renderpasses by default) as an adapted backport until oe-core advances to a mesa version that already contains it. Signed-off-by: Lakshman Chandu Kondreddy <lkondred@qti.qualcomm.com>
The current mesa(26.0.5) in wrynose has reg_size_vec4 for a702 as 48, which is incorrect. Backport this commit(6a282e8f18) until oe-core advances to a newer mesa version which contains this fix. This hang reproduces with the following Vulkan sample applications: - computenbody - timelinesemaphore The upstream commit also updates src/freedreno/ci/freedreno-a702-fails.txt. This file does not exist in mesa 26.0.5 used by the wrynose branch, therefore the CI-specific hunk was omitted while preserving the functional GPU hang fix. Signed-off-by: Sahitya Kandru <kandru@qti.qualcomm.com>
Dmitry Baryshkov (lumag)
approved these changes
Sep 11, 2026
Anuj Mittal (anujm1)
approved these changes
Sep 11, 2026
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In the current freedreno driver of mesa currently shipped in wrynose branch does not have these changes which causes GPU hangs with few vulkan samples. master branch's mesa version has been updated to a newer version where these fixes are already present.
Pull the mesa commits mentioned as backport to solve the GPU hangs in current meta-qcom wrynose build.
QLI-2.0 P0 critical fix.
CR fixed: 4634531