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drm/amdgpu: Restore uncached behaviour on GFX12
Always use MTYPE_UC if UNCACHED flag is specified. This makes kernarg region uncached and it restores usermode cache disable debug flag functionality. Do not set MTYPE_UC for COHERENT flag, on GFX12 coherence is handled by shader code. Signed-off-by: David Belanger <david.belanger@amd.com> Reviewed-by: Felix Kuehling <felix.kuehling@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> (cherry picked from commit eb6cdfb) Cc: stable@vger.kernel.org # 6.12.x
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David Belanger
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Alex Deucher
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Mar 18, 2025
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