linux-kernel - Re: [PATCH] x86/mm/init: respect memblock reserved regions when destroying mappings

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Message-ID: <4D547962.8040403@goop.org>
Date:	Thu, 10 Feb 2011 15:48:50 -0800
From:	Jeremy Fitzhardinge <jeremy@...p.org>
To:	"H. Peter Anvin" <hpa@...or.com>
CC:	Yinghai Lu <yinghai@...nel.org>,
	Stefano Stabellini <stefano.stabellini@...citrix.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"tglx@...utronix.de" <tglx@...utronix.de>,
	"x86@...nel.org" <x86@...nel.org>,
	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	Jan Beulich <JBeulich@...ell.com>
Subject: Re: [PATCH] x86/mm/init: respect memblock reserved regions when destroying
 mappings

On 02/08/2011 11:34 AM, H. Peter Anvin wrote:
> On 02/07/2011 07:12 PM, Yinghai Lu wrote:
>> why punishing native path with those checking?
>>
> What happens if you end up with a reserved range in an unfortunate place
> on real hardware?

Yes, exactly.  The reserved region code isn't very useful if you can't
rely on it to reserve stuff.

    J
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