linux-kernel - Re: bisected boot regression post 2.6.25-rc3.. please revert

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Date:	Mon, 3 Mar 2008 18:55:57 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Nish Aravamudan <nish.aravamudan@...il.com>
Cc:	Arjan van de Ven <arjan@...ux.intel.com>,
	torvalds@...ux-foundation.org, hans.rosenfeld@....com,
	linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>
Subject: Re: bisected boot regression post 2.6.25-rc3.. please revert


* Nish Aravamudan <nish.aravamudan@...il.com> wrote:

> >  in any case, the commit has to be reverted as it clearly isnt a NOP 
> >  on your box as it was intended to be. (it should only have made a 
> >  difference in a rare hugetlbfs case)
> 
> On x86/{,_64}, _PAGE_PSE and _PAGE_PROTNONE are the same bit. Would 
> that have any effect here? We encountered that collision when adding 
> mprotect() support for hugepages.

well, this is the PMD, and PROTNONE is a pte property.

	Ingo
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