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drm/amdgpu: disable MCBP by default

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Disable MCBP(mid command buffer preemption) by default as old Mesa
hangs with it. We shall not enable the feature that breaks old usermode
driver.

Fixes: 50a7c8765c ("drm/amdgpu: enable mcbp by default on gfx9")
Signed-off-by: Jiadong Zhu <Jiadong.Zhu@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
This commit is contained in:
Jiadong Zhu
2023-12-01 08:38:15 +08:00
committed by Alex Deucher
parent 3392432849
commit d6a5758866
1 changed files with 0 additions and 4 deletions
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4
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
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@@ -3791,10 +3791,6 @@ static void amdgpu_device_set_mcbp(struct amdgpu_device *adev)
adev->gfx.mcbp = true;
else if (amdgpu_mcbp == 0)
adev->gfx.mcbp = false;
else if ((amdgpu_ip_version(adev, GC_HWIP, 0) >= IP_VERSION(9, 0, 0)) &&
(amdgpu_ip_version(adev, GC_HWIP, 0) < IP_VERSION(10, 0, 0)) &&
adev->gfx.num_gfx_rings)
adev->gfx.mcbp = true;
if (amdgpu_sriov_vf(adev))
adev->gfx.mcbp = true;