From: Timur Tabi <ttabi@interactivesi.com>
To: linux-mm@kvack.org
Subject: Re: ioremap_nocache problem?
Date: Fri, 26 Jan 2001 13:22:18 -0600 [thread overview]
Message-ID: <20010126191943Z131183-223+58@kanga.kvack.org> (raw)
In-Reply-To: <m1itn2e0jp.fsf@frodo.biederman.org>
** Reply to message from Eric W. Biederman <ebiederm@xmission.com> on 26 Jan
2001 09:32:58 -0700
> 1) set mem=yyy where yyy = real_ram but is smaller than your device.
> make certain your device isn't on any mtrr.
That won't work, because the BIOS will enable MTRR regardless if it sees the
RAM. Besides, I can't set mem=yyy because the device could sit in the LOWER
memory areas, not the higher ones. I could have two DIMMs in the computer, and
the first one could have our device. Or, both could have our device. Not only
that, but the interleaving will determine exactly where the device sits.
> 2) Disable SPD on your device.
> Do the setup of the pseudo dimm yourself.
That won't work either, because I'd have to know how to program the memory
controller, and each machine is different.
Thanks for the ideas, though.
--
Timur Tabi - ttabi@interactivesi.com
Interactive Silicon - http://www.interactivesi.com
When replying to a mailing-list message, please direct the reply to the mailing list only. Don't send another copy to me.
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next prev parent reply other threads:[~2001-01-26 19:22 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-01-23 10:30 Mark Mokryn
2001-01-23 16:53 ` Timur Tabi
2001-01-25 15:16 ` Stephen C. Tweedie
2001-01-25 15:56 ` Timur Tabi
2001-01-25 16:44 ` Roman Zippel
2001-01-25 16:49 ` Timur Tabi
2001-01-26 10:39 ` Stephen C. Tweedie
[not found] ` <20010125165001Z132264-460+11@vger.kernel.org>
2001-01-25 17:04 ` Jeff Hartmann
2001-01-25 17:11 ` Timur Tabi
[not found] ` <E14LpvQ-0008Pw-00@mail.valinux.com>
2001-01-25 17:47 ` Jeff Hartmann
2001-01-25 17:53 ` Timur Tabi
2001-01-26 10:43 ` Stephen C. Tweedie
2001-01-26 16:32 ` Eric W. Biederman
2001-01-26 19:22 ` Timur Tabi [this message]
[not found] ` <20010125175308Z130507-460+45@vger.kernel.org>
2001-01-25 18:13 ` Jeff Hartmann
2001-01-25 18:18 ` Timur Tabi
[not found] ` <E14Lqyt-0003z6-00@mail.valinux.com>
2001-01-25 18:46 ` Jeff Hartmann
[not found] ` <200101251556.f0PFuPd01743@mail.redhat.com>
2001-01-26 10:37 ` Stephen C. Tweedie
2001-01-23 18:12 ` Roman Zippel
2001-01-23 18:38 ` Timur Tabi
2001-01-24 0:50 ` David Wragg, David Wragg
2001-01-24 15:14 ` Timur Tabi
[not found] ` <E14LRce-0008FU-00@diver.doc.ic.ac.uk>
2001-01-24 15:39 ` David Wragg
[not found] ` <20010123183847Z131216-18594+636@vger.kernel.org>
2001-01-24 1:01 ` David Wragg
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