From: Eric Paris <eparis@parisplace.org>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Rik van Riel <riel@redhat.com>,
"Larry H." <research@subreption.com>,
Christoph Lameter <cl@linux-foundation.org>,
Stephen Smalley <sds@tycho.nsa.gov>,
linux-mm@kvack.org, Alan Cox <alan@lxorguk.ukuu.org.uk>,
linux-kernel@vger.kernel.org, pageexec@freemail.hu
Subject: Re: Security fix for remapping of page 0 (was [PATCH] Change ZERO_SIZE_PTR to point at unmapped space)
Date: Wed, 3 Jun 2009 13:16:14 -0400 [thread overview]
Message-ID: <7e0fb38c0906031016m77416390v37fb0673e6e50501@mail.gmail.com> (raw)
In-Reply-To: <alpine.LFD.2.01.0906030944440.4880@localhost.localdomain>
On Wed, Jun 3, 2009 at 12:47 PM, Linus Torvalds
<torvalds@linux-foundation.org> wrote:
> The other mistake is to think that SELinux is sane, or should be the
> default. It's a f*cking complex disaster, and makes performance plummet on
> some things.
While I think you couldn't be more wrong I'm not going to argue that topic....
I am at least interested in hearing about the 'performance plummet.'
I don't see any performance reports on my todo list but I am
interested in banging on any that people report. Last performance
thing I heard anything about was Ingo doing some profiling of of a
network stack benchmark in which SELinux was eating a percent or two
his time. I cut the SELinux performance penalty by about 50% on my
systems in that benchmark. If others have complaints let me or the
selinux list know....
-Eric
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next prev parent reply other threads:[~2009-06-03 17:16 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-05-30 19:28 [PATCH] Change ZERO_SIZE_PTR to point at unmapped space Larry H.
2009-05-30 22:29 ` Linus Torvalds
2009-05-30 23:00 ` Larry H.
2009-05-31 2:02 ` Linus Torvalds
2009-05-31 2:21 ` Larry H.
2009-06-02 15:37 ` Christoph Lameter
2009-06-02 20:34 ` Larry H.
2009-06-03 14:50 ` Security fix for remapping of page 0 (was [PATCH] Change ZERO_SIZE_PTR to point at unmapped space) Christoph Lameter
2009-06-03 15:07 ` Linus Torvalds
2009-06-03 15:23 ` Christoph Lameter
2009-06-03 15:38 ` Linus Torvalds
2009-06-03 16:14 ` Alan Cox
2009-06-03 16:19 ` Linus Torvalds
2009-06-03 16:24 ` Eric Paris
2009-06-03 16:22 ` Eric Paris
2009-06-03 16:28 ` Linus Torvalds
2009-06-03 16:32 ` Eric Paris
2009-06-03 16:44 ` Linus Torvalds
2009-06-03 15:11 ` Stephen Smalley
2009-06-03 15:41 ` Christoph Lameter
2009-06-03 16:18 ` Linus Torvalds
2009-06-03 16:28 ` Larry H.
2009-06-03 16:36 ` Rik van Riel
2009-06-03 16:47 ` Linus Torvalds
2009-06-03 17:16 ` Eric Paris [this message]
2009-06-03 17:28 ` Linus Torvalds
2009-06-03 17:31 ` Eric Paris
2009-06-03 17:24 ` Larry H.
2009-06-03 17:21 ` Larry H.
2009-06-03 22:52 ` James Morris
2009-06-03 17:29 ` Alan Cox
2009-06-03 17:35 ` Linus Torvalds
2009-06-03 18:00 ` Larry H.
2009-06-03 18:12 ` Linus Torvalds
2009-06-03 18:39 ` Larry H.
2009-06-03 18:45 ` Linus Torvalds
2009-06-03 18:50 ` Linus Torvalds
2009-06-03 18:59 ` Christoph Lameter
2009-06-03 19:11 ` Rik van Riel
2009-06-03 19:14 ` Eric Paris
2009-06-03 19:42 ` Christoph Lameter
2009-06-03 19:51 ` Eric Paris
2009-06-03 20:04 ` Christoph Lameter
2009-06-03 20:16 ` Eric Paris
2009-06-03 20:36 ` Christoph Lameter
2009-06-03 21:20 ` Linus Torvalds
2009-06-04 2:41 ` James Morris
2009-06-03 19:21 ` Alan Cox
2009-06-03 19:45 ` Christoph Lameter
2009-06-03 21:07 ` Alan Cox
2009-06-03 19:27 ` Linus Torvalds
2009-06-03 19:50 ` Christoph Lameter
2009-06-03 20:00 ` pageexec
2009-06-03 19:41 ` pageexec
2009-06-07 10:29 ` Pavel Machek
2009-05-30 22:32 ` [PATCH] Change ZERO_SIZE_PTR to point at unmapped space Peter Zijlstra
2009-05-30 22:51 ` Larry H.
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