linux-kernel - Re: 2.6.26, PAT and AMD family 6

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Message-ID: <48224930.9030901@keyaccess.nl>
Date:	Thu, 08 May 2008 02:28:32 +0200
From:	Rene Herman <rene.herman@...access.nl>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
CC:	"H. Peter Anvin" <hpa@...or.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Adrian Bunk <bunk@...nel.org>,
	Yinghai Lu <yhlu.kernel@...il.com>,
	Ingo Molnar <mingo@...e.hu>,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	akpm@...ux-foundation.org, Pavel Machek <pavel@...e.cz>
Subject: Re: 2.6.26, PAT and AMD family 6

On 08-05-08 02:19, Linus Torvalds wrote:
> 
> On Thu, 8 May 2008, Rene Herman wrote:
>> And again, the kernel DOES see that my CPU features PAT, it just refuses
>> to use it.
> 
> Umm, and this is different how from clearing the PSE bit when we decide 
> not to use large-page support? 

It's not. That one's bad also. It's just that this one is the first one I
notice due to them blasted people screwing over my lowly Duron.

I completely and fully agree with your new flag suggestion. Was just in a
git bisect and am actually on the lowly thing in question so I'm not fast
but was looking already. X86_FEATURE_PAT_GOOD. Is it safe to reuse bit 14
now?

Rene.


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