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[1/1] drm/amdgpu: disable MCBP by default

Message ID 20231226081954.63103-2-aaron.ma@canonical.com
State New
Headers show
Series Fix AMDGPU crash on 6.5 kernel | expand

Commit Message

Aaron Ma Dec. 26, 2023, 8:19 a.m. UTC 
From: Jiadong Zhu <Jiadong.Zhu@amd.com>

BugLink: https://bugs.launchpad.net/bugs/2047389

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: 50a7c8765ca6 ("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
(backported from commit d6a57588666301acd9d42d3b00d74240964f07f6)
[Aaron: function name changes]
Signed-off-by: Aaron Ma <aaron.ma@canonical.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 4 ----
 1 file changed, 4 deletions(-)
diff mbox series

Patch

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 2168dc92c670..5466ed4b5565 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -3701,10 +3701,6 @@  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 ((adev->ip_versions[GC_HWIP][0] >= IP_VERSION(9, 0, 0)) &&
-		 (adev->ip_versions[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;