[Public]
Acked-by: Alex Deucher <alexander.deuc...@amd.com>
________________________________
From: amd-gfx <amd-gfx-boun...@lists.freedesktop.org> on behalf of
jiadong....@amd.com <jiadong....@amd.com>
Sent: Thursday, November 30, 2023 7:57 PM
To: amd-gfx@lists.freedesktop.org <amd-gfx@lists.freedesktop.org>
Cc: Zhu, Jiadong <jiadong....@amd.com>
Subject: [PATCH] drm/amdgpu: disable MCBP by default
From: Jiadong Zhu <jiadong....@amd.com>
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.
Signed-off-by: Jiadong Zhu <jiadong....@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 4 ----
1 file changed, 4 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 21b8a8f2b622..280fcad9ce93 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -3690,10 +3690,6 @@ 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;
--
2.25.1
