[dpdk-dev] [PATCH v2] mem: revert page locking when not using hugepages

Thomas Monjalon thomas.monjalon at 6wind.com
Thu Jun 30 19:17:12 CEST 2016


2016-06-27 17:58, Olivier Matz:
> This reverts commit 593a084afc2b441895aeca78a2c4465e450d0ef5.
> 
> Since recently [1], it is not possible to run the dpdk with
> non-root privileges and the --no-huge option. This is because the eal
> layer tries to lock the memory. Using locked memory is mandatory for
> physical devices because they reference physical addresses.
> 
> But a user may want to start the dpdk without locked memory, because he
> does not have the permission to do so, and/or does not have this need,
> for instance because he uses virtual drivers.
> 
> So this commit reverts the use of MAP_LOCKED in mmap() flags.
> 
> [1] http://www.dpdk.org/ml/archives/dev/2016-May/039404.html
> 
> Fixes: 593a084afc2b ("mem: lock pages when not using hugepages")
> Reported-by: Panu Matilainen <pmatilai at redhat.com>
> Signed-off-by: Olivier Matz <olivier.matz at 6wind.com>

Applied, thanks

Let's keep in mind to make things working with --no-huge.


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