drm/amdgpu: Control NPA DMA-buf importing

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NPA DMA-Bufs can only be imported on the same device as the
original BO. In source-identification mode NPA addresses are
importer-specific. Each GPU needs to import the UALink handle
by themselves. Sharing the NPA addresses between devices is
meaningless and potentially dangerous. Put controls to ensure
this is not violated.

Signed-off-by: Mukul Joshi <mukul.joshi@amd.com>
Reviewed-by: Felix Kuehling <felix.kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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Mukul Joshi 2025-11-12 14:00:01 -05:00 • committed by Alex Deucher

parent 42cb7c53fa

commit 89496dcdca

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

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