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

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Date:	Tue, 6 May 2008 12:15:30 -0700
From:	"Yinghai Lu" <yhlu.kernel@...il.com>
To:	"H. Peter Anvin" <hpa@...or.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

On Tue, May 6, 2008 at 12:08 PM, H. Peter Anvin <hpa@...or.com> wrote:
> Yinghai Lu wrote:
>
> >
> > >
> > > >
> > > >
> > >  Then you would have to add a method to pass it into the kernel if you
> want
> > > it to be generally useful.
> > >
> >
> > but how about old stock kernel in RHEL3U9?
> >
> >
>
>  There is nothing you can do about those that will work on any platform.  If
> you have knowledge of the firmware you can of course break those rules.
>
thanks. I will try to allocate 4k page for mpc and copy the old mpc to
it..., and reuse the old mpf.

YH
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