linux-kernel - Re: [PATCH 3/5] x86: Only direct map addresses that are marked as E820

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Date:	Mon, 27 Aug 2012 13:16:23 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Jacob Shin <jacob.shin@....com>
CC:	Yinghai Lu <yinghai@...nel.org>, X86-ML <x86@...nel.org>,
	LKML <linux-kernel@...r.kernel.org>, Tejun Heo <tj@...nel.org>,
	Dave Young <dyoung@...hat.com>,
	Chao Wang <chaowang@...hat.com>,
	Vivek Goyal <vgoyal@...hat.com>,
	Andreas Herrmann <andreas.herrmann3@....com>,
	Borislav Petkov <borislav.petkov@....com>
Subject: Re: [PATCH 3/5] x86: Only direct map addresses that are marked as
 E820_RAM

On 08/27/2012 11:49 AM, Jacob Shin wrote:
> 
> Yinghai, another question, what about hotplug? Are we guaranteed that
> we will always be adding memory above max_pfn_mapped?

I don't think we can rely on this...

> And hotplug will also update e820 to mark the range as E820_RAM as well?

This is really should.

	-hpa

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