drm/amdgpu: Implement mechanism to revoke exported memory

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This patch adds implementation to revoke exported memory.
The exporter GPU will send a NPA-REVOKE message to inform the
importer GPUs to stop using the exported memory. Once the importers
stop using the exporter memory, they would send back a NPA-RELEASE
message to inform the exporters to free the exporter memory.

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 2026-04-27 22:18:23 -04:00 • committed by Alex Deucher

parent a9a7035e2e

commit 7cc82cd90d

2 changed files with 252 additions and 0 deletions

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249

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

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3

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

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