drm/amdgpu: Add EXT_COHERENT memory allocation flags

Browse source

These flags (for GEM and SVM allocations) allocate
memory that allows for system-scope atomic semantics.

On GFX943 these flags cause caches to be avoided on
non-local memory.

On all other ASICs they are identical in functionality to the
equivalent COHERENT flags.

Corresponding Thunk patch is at
https://github.com/RadeonOpenCompute/ROCT-Thunk-Interface/pull/88

Reviewed-by: David Yat Sin <David.YatSin@amd.com>
Signed-off-by: David Francis <David.Francis@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

David Francis 2023-07-21 11:14:24 -04:00 • committed by Alex Deucher

parent d92e55565c

commit 5f248462c6

8 changed files with 30 additions and 3 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

2

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

View file

1

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

View file

1

drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c

View file

1

drivers/gpu/drm/amd/amdgpu/gmc_v11_0.c

View file

5

drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c

View file

10

drivers/gpu/drm/amd/amdkfd/kfd_svm.c

View file

10

include/uapi/drm/amdgpu_drm.h

View file

3

include/uapi/linux/kfd_ioctl.h

View file