drm/amdgpu: Detect if amdgpu in IOMMU direct map mode

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If host and amdgpu IOMMU is not enabled or IOMMU is pass through mode,
set adev->ram_is_direct_mapped flag which will be used to optimize
memory usage for multi GPU mappings.

Signed-off-by: Philip Yang <Philip.Yang@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>

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Philip Yang 2021-12-06 21:10:52 -05:00 • committed by Alex Deucher

parent a723c6d078

commit 4a74c38cd6

2 changed files with 21 additions and 0 deletions

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2

drivers/gpu/drm/amd/amdgpu/amdgpu.h

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19

drivers/gpu/drm/amd/amdgpu/amdgpu_device.c

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