From: "David S. Miller" <davem@redhat.com>
To: ultralinux@vger.kernel.org
Subject: Re: Ultra 5 with 1GB of memory
Date: Tue, 15 Aug 2000 06:59:02 +0000 [thread overview]
Message-ID: <marc-linux-ultrasparc-96632360931274@msgid-missing> (raw)
In-Reply-To: <marc-linux-ultrasparc-96632223129402@msgid-missing>
Date: Mon, 14 Aug 2000 11:57:09 -0400
From: Daniel Bidwell <bidwell@andrews.edu>
It will not boot with more then 512MB of memory (using the memQ2m
boot option). Anything over that gives a:
WARNING: not all physical memory mapped in IOMMU
The prom-property for "virtual-dma" is c0000000 [20000000] for 512MB.
Right, Linux does not support more than 512MB of physical memory on
Ultra5/10 in the 2.2.x kernels.
Does anyone know how to change this to 80000000 [40000000] for 1024MB?
Solaris 8 knows how to do this as I have two other machines just like
this running Solaris 8.
Solaris is not changing the virtual-dma property, instead it does what
Linux-2.4.x does, use dynamic dma mapping so that the amount of
supportable memory is independant of the size of the DMA region.
2.4.x kernels are your only bet if you wish to use all 1GB of memory.
Later,
David S. Miller
davem@redhat.com
prev parent reply other threads:[~2000-08-15 6:59 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-08-14 15:57 Ultra 5 with 1GB of memory Daniel Bidwell
2000-08-15 6:59 ` David S. Miller [this message]
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=marc-linux-ultrasparc-96632360931274@msgid-missing \
--to=davem@redhat.com \
--cc=ultralinux@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;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).