linux-kernel - Re: BUG: 1bbbbe7 (x86: Exclude E820_RESERVED regions...) PANIC on boot

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Message-ID: <5085B3F6.4060906@zytor.com>
Date:	Mon, 22 Oct 2012 14:00:38 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Yinghai Lu <yinghai@...nel.org>
CC:	"H. Peter Anvin" <hpa@...ux.intel.com>,
	Jacob Shin <jacob.shin@....com>, Tom Rini <trini@...com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"stable@...nel.org" <stable@...nel.org>
Subject: Re: BUG: 1bbbbe7 (x86: Exclude E820_RESERVED regions...) PANIC on
 boot

On 10/22/2012 01:50 PM, Yinghai Lu wrote:
>>
>> We should not map a partial page at the end of RAM; it is functionally
>> lost.
> 
> Now we did not, we have max_low_pfn, and max_pfn to cap out end partial page.
> 

Well, it is not just end of RAM, which is where the entire current
implementation falls apart, obviously.

	-hpa

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