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

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Message-ID: <47FD76C0.4010603@zytor.com>
Date:	Wed, 09 Apr 2008 19:09:04 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Kasper Sandberg <lkml@...anurb.dk>
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?

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.

	-hpa
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