[dpdk-dev] [PATCH v2 2/2] mem: unmap unneeded space

Thomas Monjalon thomas at monjalon.net
Mon May 14 01:33:50 CEST 2018


08/05/2018 22:20, Thomas Monjalon:
> 02/05/2018 23:00, Thomas Monjalon:
> > 30/04/2018 14:50, Bruce Richardson:
> > > On Mon, Apr 30, 2018 at 12:21:43PM +0100, Anatoly Burakov wrote:
> > > > When we ask to reserve virtual areas, we usually include
> > > > alignment in the mapping size, and that memory ends up
> > > > being wasted. Wasting a gigabyte of VA space while trying to
> > > > reserve one gigabyte is pretty expensive on 32-bit, so after
> > > > we're done mapping, unmap unneeded space.
> > > > 
> > > > Signed-off-by: Anatoly Burakov <anatoly.burakov at intel.com>
> > > > ---
> > > > 
> > > > Notes:
> > > >     v2:
> > > >     - Split fix for size_t overflow into separate patch
> > > >     - Improve readability of unmapping code
> > > >     - Added comment explaining why unmapping is done
> > > > 
> > > Acked-by: Bruce Richardson <bruce.richardson at intel.com>
> > 
> > I am not confident pushing this change post-rc1.
> > Please can we have more validation tests with this patch?
> 
> Any news about validation tests?

No news, but I've decided to push it anyway.

Series applied




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