[PATCH 0/1] [Jaunty] LP#74179 -- support for i386 machines with >3GB RAM

Scott James Remnant scott at canonical.com
Tue Jan 27 17:46:39 UTC 2009

On Tue, 2009-01-27 at 17:09 +0100, Ante Karamatic wrote:

> On Tue, 27 Jan 2009 16:02:27 +0000
> Scott James Remnant <scott at canonical.com> wrote:
> > Which CPUs, specifically?
> Wikipedia [http://en.wikipedia.org/wiki/Physical_Address_Extension]:
This says:

As of 2008[update], many common Linux distributions come with a
PAE-enabled kernel as the distribution-specific default.

Mac OS X for Intel Macs supports PAE and the NX bit on all CPUs
supported by Apple

Solaris supports PAE beginning with Solaris version 7

Windows XP SP2 and later, by default, on processors with the no-execute
(NX) or execute-disable (XD) feature, runs in PAE mode in order to allow

This sounds like PAE is widely enabled, and people who are going to be
bitten by no PAE are firmly in the special group who can compile their
own kernel to turn it off.

Scott James Remnant
scott at canonical.com
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