drm/amdkfd: Add DMABuf import functionality

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This is used for interoperability between ROCm compute and graphics
APIs. It allows importing graphics driver BOs into the ROCm SVM
address space for zero-copy GPU access.

The API is split into two steps (query and import) to allow user mode
to manage the virtual address space allocation for the imported buffer.

Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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Felix Kuehling 2018-11-20 21:00:29 -05:00 • committed by Alex Deucher

parent 3704d56e1a

commit 1dde0ea95b

9 changed files with 287 additions and 5 deletions

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26

include/uapi/linux/kfd_ioctl.h

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