Messages in this thread | | | Date | Wed, 3 Jun 2009 13:31:56 -0400 | Subject | Re: Security fix for remapping of page 0 (was [PATCH] Change ZERO_SIZE_PTR to point at unmapped space) | From | Eric Paris <> |
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On Wed, Jun 3, 2009 at 1:28 PM, Linus Torvalds <torvalds@linux-foundation.org> wrote: > > > On Wed, 3 Jun 2009, Eric Paris wrote: >> >> I am at least interested in hearing about the 'performance plummet.' > > It's perhaps not so much SElinux itself, but the AUDIT support (which it > requires) that is really _very_ noticeable on microbenchmarks. > > Last time I ran lmbench on a Fedora kernel it was horrible. Turning off > AUDIT (which also turns off SElinux) fixes it. > > It may be crazy distro auditing rules or whatever, but that doesn't change > the basic issue.
Probably AUDITSYSCALL, not AUDIT. SELinux only needs AUDIT. I'll poke that too someday, thanks.
-Eric
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