drm/amdgpu: add mem_reserved_info sysfs attribute

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Expose the cached MEM_RESERVED_INFO discovery table via a per-device
sysfs file:

    /sys/class/drm/cardX/device/mem_reserved_info

The file is read-only and dumps every region as:

    list_num=<N>
    [<i>] id=<id> (<name>) size=0x<size> start=0x<start>

Only created when the table was successfully resolved at discovery
init time.

Suggested-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Feifei Xu <Feifei.Xu@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

Feifei Xu 2026-05-12 09:04:46 +08:00 • committed by Alex Deucher

parent 1380b7be58

commit e59206f393

3 changed files with 64 additions and 0 deletions

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5

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

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56

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

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3

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

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