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author | Jay Cornwall <jay.cornwall@amd.com> | 2015-01-19 17:47:34 (GMT) |
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committer | Oded Gabbay <oded.gabbay@amd.com> | 2015-01-19 17:47:34 (GMT) |
commit | d752f95e55ed36648fc2bcbca348f5113920c357 (patch) | |
tree | 15b70eedfca815c542742354c5099e9c760984d7 /tools/lib | |
parent | b6819cec29cc0088e7398db9ed8377ab8328e012 (diff) | |
download | linux-d752f95e55ed36648fc2bcbca348f5113920c357.tar.xz |
drm/amdkfd: Preserve CP_MQD_IQ_RPTR internal state
CP microcode uses undocumented bits in this register to record queue
state information. The KFD zeroes these bits in update_mqd, when invoked
through the UPDATE_QUEUE ioctl, causing incoherent state when the ioctl
is used to successively unmap and map a queue.
Since the queue type cannot be changed in this path, move the MQD write
to init_mqd.
Signed-off-by: Jay Cornwall <jay.cornwall@amd.com>
Reviewed-by: Ben Goz <ben.goz@amd.com>
Signed-off-by: Oded Gabbay <oded.gabbay@amd.com>
Diffstat (limited to 'tools/lib')
0 files changed, 0 insertions, 0 deletions