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    Subject[PATCH 5.13 186/266] drm/amdgpu: Update NV SIMD-per-CU to 2
    Date
    From: Joseph Greathouse <Joseph.Greathouse@amd.com>

    commit aa6158112645aae514982ad8d56df64428fcf203 upstream.

    Navi series GPUs have 2 SIMDs per CU (and then 2 CUs per WGP).
    The NV enum headers incorrectly listed this as 4, which later meant
    we were incorrectly reporting the number of SIMDs in the HSA
    topology. This could cause problems down the line for user-space
    applications that want to launch a fixed amount of work to each
    SIMD.

    Signed-off-by: Joseph Greathouse <Joseph.Greathouse@amd.com>
    Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
    Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
    Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
    Cc: stable@vger.kernel.org
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    drivers/gpu/drm/amd/include/navi10_enum.h | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    --- a/drivers/gpu/drm/amd/include/navi10_enum.h
    +++ b/drivers/gpu/drm/amd/include/navi10_enum.h
    @@ -430,7 +430,7 @@ ARRAY_2D_DEPTH
    */

    typedef enum ENUM_NUM_SIMD_PER_CU {
    -NUM_SIMD_PER_CU = 0x00000004,
    +NUM_SIMD_PER_CU = 0x00000002,
    } ENUM_NUM_SIMD_PER_CU;

    /*

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