From: Stefan Richter <stefanr@s5r6.in-berlin.de>
To: Jeff Chua <jeff.chua.linux@gmail.com>
Cc: Robert Hancock <hancockr@shaw.ca>, lkml <linux-kernel@vger.kernel.org>
Subject: Re: 4GB Physical. Less than 3GB in Linux.
Date: Mon, 16 Apr 2007 21:56:10 +0200 [thread overview]
Message-ID: <4623D4DA.60600@s5r6.in-berlin.de> (raw)
In-Reply-To: <b6a2187b0704160752u1c837f33p652c0d431b66459@mail.gmail.com>
Jeff Chua wrote:
> On 4/16/07, Robert Hancock <hancockr@shaw.ca> wrote:
>> Chipset limitation. It uses up most of the MMIO region above 3GB
>> preventing RAM from being mapped there, and doesn't support remapping
>> the covered RAM to above 4GB. Nothing the kernel can do about it.
>
> Well, I guess I learned the hard way. So it's better not to buy 4GB
> ... it turns out to be the same as buying one with just 3GB RAM.
Except for minimal performance differences if the 3GB configuration
doesn't support dual-channel mode. (Not worth the price difference to 4GB.)
--
Stefan Richter
-=====-=-=== -=-- =----
http://arcgraph.de/sr/
next prev parent reply other threads:[~2007-04-16 19:56 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <fa.wZS4ieAkOMvNOj61QiUn9aS+YeM@ifi.uio.no>
2007-04-16 14:33 ` Robert Hancock
2007-04-16 14:52 ` Jeff Chua
2007-04-16 19:56 ` Stefan Richter [this message]
2007-04-17 18:26 ` Jasper Spaans
2007-04-18 0:28 ` Jeff Chua
2007-04-16 7:28 Jeff Chua
2007-04-16 13:12 ` Fortier,Vincent [Montreal]
2007-04-16 14:17 ` Stefan Richter
2007-04-16 14:47 ` Jeff Chua
2007-04-16 18:25 ` Stefan Richter
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=4623D4DA.60600@s5r6.in-berlin.de \
--to=stefanr@s5r6.in-berlin.de \
--cc=hancockr@shaw.ca \
--cc=jeff.chua.linux@gmail.com \
--cc=linux-kernel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
Powered by JetHome