From: Pavel Machek <pavel@denx.de>
To: Dave Hansen <dave@linux.vnet.ibm.com>
Cc: Phil Turmel <philip@turmel.org>, "H. Peter Anvin" <hpa@zytor.com>,
paul.szabo@sydney.edu.au, ben@decadent.org.uk,
linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: PAE problems was [RFC] Reproducible OOM with just a few sleeps
Date: Sun, 10 Feb 2013 20:09:21 +0100 [thread overview]
Message-ID: <20130210190921.GA18384@amd.pavel.ucw.cz> (raw)
In-Reply-To: <5112F518.3020003@linux.vnet.ibm.com>
On Wed 2013-02-06 16:28:08, Dave Hansen wrote:
> On 02/01/2013 02:25 AM, Pavel Machek wrote:
> > Ouch, and... IIRC (hpa should know for sure), PAE is neccessary for
> > R^X support on x86, thus getting more common, not less. If it does not
> > work, that's bad news.
>
> Dare I ask what "R^X" is?
Read xor Execute, aka NX.... support for executable but not readable
pages. Usefull for making exploits harder iirc.
Pavel
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next prev parent reply other threads:[~2013-02-10 19:09 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-12 3:31 paul.szabo
2013-01-14 15:00 ` Dave Hansen
2013-01-14 20:36 ` paul.szabo
2013-01-15 0:34 ` Bug#695182: " Ben Hutchings
2013-01-15 0:56 ` Dave Hansen
2013-01-15 2:16 ` paul.szabo
2013-01-30 12:51 ` Pavel Machek
2013-01-30 15:32 ` Dave Hansen
2013-01-30 19:40 ` paul.szabo
2013-01-31 5:15 ` Bug#695182: " Ben Hutchings
2013-01-31 9:07 ` paul.szabo
2013-01-31 13:38 ` Ben Hutchings
2013-01-31 23:06 ` paul.szabo
2013-02-01 1:07 ` Ben Hutchings
2013-02-01 2:12 ` paul.szabo
2013-02-01 2:57 ` Ben Hutchings
2013-02-01 3:13 ` paul.szabo
2013-02-01 4:38 ` Phil Turmel
2013-02-01 10:20 ` Pavel Machek
2013-02-01 10:25 ` PAE problems was " Pavel Machek
2013-02-01 16:57 ` H. Peter Anvin
2013-02-01 17:45 ` Ben Hutchings
2013-02-07 0:28 ` Dave Hansen
2013-02-10 19:09 ` Pavel Machek [this message]
2013-02-17 9:10 ` Simon Jeons
2013-02-24 22:10 ` paul.szabo
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