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28fe416466
For userptr bo, if adev is not in IOMMU isolation mode, RAM direct map to GPU, multiple GPUs use same system memory dma mapping address, they can share the original mem->bo in attachment to reduce dma address array memory usage. Signed-off-by: Philip Yang <Philip.Yang@amd.com> Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> |
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