From: Rann Bar-On <rb6@duke.edu>
To: linux-kernel@vger.kernel.org
Subject: mtrr registers with >= 4GB ram
Date: Wed, 2 Jul 2008 10:55:10 -0400 (EDT) [thread overview]
Message-ID: <alpine.LNX.1.10.0807021049580.15549@localhost> (raw)
As documented at https://bugs.launchpad.net/linux/+bug/210780 and
http://www.rage3d.com/board/showthread.php?t=33821469 (as well as other
places - google 4gb mtrr bug), the kernel appears to misdetect the mtrr
registers on many machines with 4gb ram, causing all sorts of issues -
especially with video drivers in X. It is possible to rewrite the correct
registers using a pretty hackish script, but the bug should probably be
fixed at the kernel level.
Please CC me personally when replying, as I'm not on LKML. I'd be happy
to try out patches if such come along :)
Thanks,
Rann
next reply other threads:[~2008-07-02 15:07 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-02 14:55 Rann Bar-On [this message]
2008-07-02 16:49 ` mtrr registers with >= 4GB ram Yinghai Lu
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