On Wed, May 31, 2017 at 07:18:19PM +0300, Leon Romanovsky wrote:
> I think that you are hitting the side effect of these commits
> 7d0cc6edcc70 ("IB/mlx5: Add MR cache for large UMR regions") and
> 81713d3788d2 ("IB/mlx5: Add implicit MR support")
>
> Do you have CONFIG_INFINIBAND_ON_DEMAND_PAGING on? Can you disable it
> for the test?
Eww. Please make sure mlx5 gracefully handles cases where it can't use
crazy amount of memory, including disabling features like the above
at runtime when the required resources aren't available.
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