From: Dave Jones <davej@codemonkey.org.uk>
To: William Lee Irwin III <wli@holomorphy.com>,
linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: no more MTRRs available ?
Date: Wed, 29 Jan 2003 17:48:42 +0000 [thread overview]
Message-ID: <20030129174842.GE1856@codemonkey.org.uk> (raw)
In-Reply-To: <20030129172001.GM780@holomorphy.com>
On Wed, Jan 29, 2003 at 09:20:01AM -0800, William Lee Irwin III wrote:
> Looks better than what I'm getting on 2.5.59:
>
> curly:~# cat /proc/mtrr
> reg00: base=0xc0000000 (49152MB), size=16384MB: uncachable, count=1
> reg01: base=0x00000000 ( 0MB), size=524288MB: write-back, count=1
> reg02: base=0x800000000 (524288MB), size=262144MB: write-back, count=1
> Yes, this is standard ia32 (P-III/Coppermine cpus), and hence the
> numbers here are utter garbage.
Bizarre. The size field isn't being shifted, and your base is somewhere
off in 64bit land.
See Andi's "RED-PEN" comments in various parts of arch/i386/kernel/cpu/mtrr/
They need fixing at some point, and could be the cause of your problems.
Dave
--
| Dave Jones. http://www.codemonkey.org.uk
| SuSE Labs
next prev parent reply other threads:[~2003-01-29 17:43 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-01-29 15:23 no more MTRRs available ? Stephan von Krawczynski
[not found] ` <Pine.LNX.4.44.0301291025240.18828-100000@coffee.psychology.mcmaster.ca>
2003-01-29 15:45 ` Stephan von Krawczynski
[not found] ` <Pine.LNX.4.44.0301291046490.18828-100000@coffee.psychology.mcmaster.ca>
2003-01-29 16:05 ` Stephan von Krawczynski
2003-01-29 16:20 ` Dave Jones
2003-01-29 17:15 ` Stephan von Krawczynski
2003-01-29 16:14 ` Dave Jones
2003-01-29 16:52 ` Dave Jones
2003-01-29 17:20 ` William Lee Irwin III
2003-01-29 17:48 ` Dave Jones [this message]
2003-01-29 18:00 ` William Lee Irwin III
2003-01-29 18:12 ` Dave Jones
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