linux-kernel - Re: Does Linux have plan to support memory hole remapping?

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Message-Id: <1207831296.1514.5.camel@localhost>
Date:	Thu, 10 Apr 2008 14:41:36 +0200
From:	Kasper Sandberg <lkml@...anurb.dk>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	Ingo Molnar <mingo@...e.hu>,
	Matti Aarnio <matti.aarnio@...iler.org>,
	Zhao Forrest <forrest.zhao@...il.com>,
	Andi Kleen <andi@...stfloor.org>, discuss@...-64.org,
	linux-kernel@...r.kernel.org, yhlu.kernel@...il.com, ak@...e.de
Subject: Re: Does Linux have plan to support memory hole remapping?

On Wed, 2008-04-09 at 19:09 -0700, H. Peter Anvin wrote:
> Kasper Sandberg wrote:
> > A somewhat related question is.. How come linux does not(as i understand
> > it) support talking to the chipsets to do these things? wouldnt this
> > also give other benefits, such as being able to more precisely control
> > interrupts and stuff?
> 
> Sure.  Plus, it's virtually guaranteed to crash or corrupt your system 
> if you try to do anything which requires ACPI or SMM.
Ah, i just thought that a specific other OS actually did this (which,
now that you mention this, makes a whole lot of sense :-))
> 
> 	-hpa
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