drm/amdgpu: Add ioctl infra for exporting/importing UALink handles

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Add the ioctl infrastructure to support exporting and importing BOs
to facilitate NPA based memory sharing across GPUs in a rack scale
setup.

Proposed userspace:
35959f8e12/projects/rocr-runtime/libhsakmt/src/memory.c (L971)
35959f8e12/projects/rocr-runtime/libhsakmt/src/memory.c (L1036)

v2: Move the ioctl wire-up to the end of the series.

Signed-off-by: Mukul Joshi <mukul.joshi@amd.com>
Signed-off-by: Horatio Zhang <hongkun.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

Mukul Joshi 2026-08-20 22:40:53 +08:00 • committed by Alex Deucher

parent b67d2d039f

commit 15d1c306d8

4 changed files with 78 additions and 0 deletions

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2

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

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44

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

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2

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

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30

include/uapi/drm/amdgpu_drm.h

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