linux-kernel - Re: [PATCH] x86: fixed mtrr change WP to WB

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Message-ID: <4820A6DF.7010607@zytor.com>
Date:	Tue, 06 May 2008 11:43:43 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Yinghai Lu <yhlu.kernel@...il.com>
CC:	Ingo Molnar <mingo@...e.hu>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] x86: fixed mtrr change WP to WB

Yinghai Lu wrote:
>
>>  Obviously, if you have already modified a table, you should save a pointer
>> to it, and not rely on the kernel scanning later.
> 
> that modified mptable is for second kernel that is kexeced.
> 

Then you would have to add a method to pass it into the kernel if you 
want it to be generally useful.

	-hpa
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