DragonFly kernel List (threaded) for 2007-07
DragonFly BSD
DragonFly kernel List (threaded) for 2007-07
[Date Prev][Date Next]  [Thread Prev][Thread Next]  [Date Index][Thread Index]

[no subject]


de> <46995FB0.1080108@netphreax.net>
From: Joerg Sonnenberger <joerg@britannica.bec.de>
Mail-Followup-To: kernel@crater.dragonflybsd.org
Subject: Re: 4mb PAGES for mbuf clusters
Date: Sun, 15 Jul 2007 01:50:36 +0200
BestServHost: crater.dragonflybsd.org
List-Post: <mailto:kernel@crater.dragonflybsd.org>
List-Subscribe: <mailto:kernel-request@crater.dragonflybsd.org?body=subscribe>
List-Unsubscribe: <mailto:kernel-request@crater.dragonflybsd.org?body=unsubscribe>
List-Help: <mailto:kernel-request@crater.dragonflybsd.org?body=help>
List-Owner: <mailto:owner-kernel@crater.dragonflybsd.org>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <46995FB0.1080108@netphreax.net>
Sender: kernel-errors@crater.dragonflybsd.org
Errors-To: kernel-errors@crater.dragonflybsd.org
Lines: 15
X-Trace: 1184457470 crater_reader.dragonflybsd.org 796
Xref: crater_reader.dragonflybsd.org dragonfly.kernel:11252

On Sat, Jul 14, 2007 at 11:43:44PM +0000, Thomas E. Spanjaard wrote:
> >no.  and PAE is stupid, so we won't do that.  it's really stupid.  really.
> Actually, we will do that. Perhaps not on x86-32, but it sure is a 
> requirement for 64bit long mode on x86-64...

PAE for long mode is quite different for PAE for 32bit mode.

The question is whether the VM subsystem and many lower parts of the
kernel have to deal with kernel addresses being larger than pointers or
not. That's opening the box of Pandora for no real gain -- if you need
more than 3.x GB RAM, switch to long mode. That doesn't have this


[Date Prev][Date Next]  [Thread Prev][Thread Next]  [Date Index][Thread Index]