linux-kernel - Re: [PATCH 03/10] x86, mm: get early page table from BRK

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Message-ID: <507753AB.2050204@zytor.com>
Date:	Fri, 12 Oct 2012 07:18:03 +0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Yinghai Lu <yinghai@...nel.org>
CC:	Konrad Rzeszutek Wilk <konrad@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...e.hu>, Jacob Shin <jacob.shin@....com>,
	Tejun Heo <tj@...nel.org>,
	Stefano Stabellini <stefano.stabellini@...citrix.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 03/10] x86, mm: get early page table from BRK

On 10/12/2012 06:55 AM, Yinghai Lu wrote:
> On Thu, Oct 11, 2012 at 7:41 AM, Konrad Rzeszutek Wilk
> <konrad@...nel.org> wrote:
>> On Wed, Oct 10, 2012 at 08:49:05AM -0700, Yinghai Lu wrote:
>>>
>>> yes that is some extreme case:
>>> assume that 2M range is [2T-2M, 2T),
>>
>> What is T in here? Terabyte? Is the '[' vs ')' a significance in your
>> explanation? Should it be '[2T-2M, 2T]' ?
> 
> yes, T is terabyte
> 
> [2T-2M, 2T) is equal to [2T-2M, 2T-1]
> 
> ) mean the boundary is not included.
> 

Right... and just to defend Yinghai here, this is a standard
mathematical notation.

	-hpa


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