Alex Waterman 0566aee853 gpu: nvgpu: WAR for simulator bug ...

On linsim, when the push buffers are allowed to be allocated with small
pages above 4GB the simulator crashes. This patch ensures that for
linsim all small page allocations are forced to be below 4GB in the
GPU VA space. By doing so the simulator no longer crashes.

This bug has come up because the GPU buddy allocator work generates
allocations at the top of the address space first. Thus push buffers
were located at between 12GB and 16GB in the GPU VA space.

Change-Id: Iaef0af3fda3f37ac09a66b5e1179527d6fe08ccc
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: http://git-master/r/740728
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>

2015-05-11 08:52:09 -07:00

..

nvgpu

gpu: nvgpu: WAR for simulator bug

2015-05-11 08:52:09 -07:00