Re: [PATCH] IB/qib: Change lkey table allocation to support more MRs

[Doug Ledford <dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>]

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On 07/21/2015 08:36 AM, Mike Marciniszyn wrote:
> The lkey table is allocated with with a get_user_pages() with an
> order based on a number of index bits from a module parameter.
> 
> The underlying kernel code cannot allocate that many contiguous pages.
> 
> There is no reason the underlying memory needs to be physically
> contiguous.
> 
> This patch:
> - switches the allocation/deallocation to vmalloc/vfree
> - caps the number of bits to 23 to insure at least 1 generation bit
>   o this matches the module parameter description
> 
> Cc: stable-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
> Reviewed-by: Vinit Agnihotri <vinit.abhay.agnihotri-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
> Signed-off-by: Mike Marciniszyn <mike.marciniszyn-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>

Thanks, I've picked this up for 4.3.


-- 
Doug Ledford <dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
              GPG KeyID: 0E572FDD



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