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Date: Tue, 2 Sep 2008 15:46:20 -0700
From: Andrew Morton <akpm@linux-foundation.org>
To: Bob Tracy <rct@gherkin.frus.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [BUG] /proc/mtrr I/O error
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On Fri, 29 Aug 2008 16:38:24 -0500
Bob Tracy <rct@gherkin.frus.com> wrote:

> With 2.6.27-rc4 and possibly earlier kernels, I see the following:
> 
> $ cat /proc/mtrr
> cat: /proc/mtrr: Input/output error
> 
> Processor is an AMD K6-III/450.
> 

static int mtrr_open(struct inode *inode, struct file *file)
{
	if (!mtrr_if) 
		return -EIO;



Beats me.  Perhaps something broke in mtrr_bp_init().

It would be useful to know if 2.6.26 worked OK.

Thanks.