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(parent: 7608867) | patch
amdkfd: Disable support for 32-bit user processes
authorOded Gabbay <oded.gabbay@amd.com>
Fri, 5 Dec 2014 08:40:34 +0000 (10:40 +0200)
committerOded Gabbay <oded.gabbay@amd.com>
Fri, 5 Dec 2014 20:01:35 +0000 (22:01 +0200)
commita18069c132cb0d065ff23c05977d06ea0c78404f
tree0801554a71620dadf55f319e2936f17f2df049fatree | snapshot
parent7608867d0c4d9da30e9efe6a53ff4ee1e6c4990bcommit | diff
amdkfd: Disable support for 32-bit user processes

This patch checks if the process that opens the /dev/kfd device is 32-bit
process. If so, it returns -EPERM and prints a warning message in dmesg.

This is done to prevent 32-bit user processes from using amdkfd, and hence, HSA
features.

AMD's HSA userspace stack will also support only 64-bit processes on Linux.

Reviewed-by: Alexey Skidanov <alexey.skidanov@amd.com>
Signed-off-by: Oded Gabbay <oded.gabbay@amd.com>
drivers/gpu/drm/amd/amdkfd/kfd_chardev.c diff | blob | history
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