drm/amdgpu: Handle local GPUs in UALink import

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When the remote GPU is part of the local_accels array (same physical
pod), bypass the HELLO/NPA-REQ messaging protocol and directly look up
the exported BO in the peer's exporter xarray. Export it as a DMA-buf
and return the fd to user-space without creating an importer xarray
entry.

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 2026-04-22 18:56:04 -04:00 • committed by Alex Deucher

parent 003da01f20

commit ec1087853e

1 changed files with 85 additions and 15 deletions

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

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