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drm/amdgpu/gmc11: disable AGP aperture
We've had misc reports of random IOMMU page faults when
this is used. It's just a rarely used optimization anyway, so
let's just disable it. It can still be toggled via the
module parameter for testing.
v2: leave it configurable via module parameter
Fixes: 67318cb843
("drm/amdgpu/gmc11: set gart placement GC11")
Reviewed-by: Yang Wang <kevinyang.wang@amd.com> (v1)
Acked-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Tested-by: Mario Limonciello <mario.limonciello@amd.com> # PHX & Navi33
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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1 changed files with 1 additions and 1 deletions
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@ -642,7 +642,7 @@ static void gmc_v11_0_vram_gtt_location(struct amdgpu_device *adev,
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amdgpu_gmc_gart_location(adev, mc, AMDGPU_GART_PLACEMENT_HIGH);
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if (!amdgpu_sriov_vf(adev) &&
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(amdgpu_ip_version(adev, GC_HWIP, 0) < IP_VERSION(11, 5, 0)) &&
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(amdgpu_agp != 0))
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(amdgpu_agp == 1))
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amdgpu_gmc_agp_location(adev, mc);
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/* base offset of vram pages */
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