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From: "H. Peter Anvin" <hpa@zytor.com>
To: Ingo Molnar <mingo@elte.hu>
Cc: Nish Aravamudan <nish.aravamudan@gmail.com>,
	Arjan van de Ven <arjan@linux.intel.com>,
	torvalds@linux-foundation.org, hans.rosenfeld@amd.com,
	linux-kernel@vger.kernel.org,
	Thomas Gleixner <tglx@linutronix.de>
Subject: Re: bisected boot regression post 2.6.25-rc3.. please revert
Date: Mon, 03 Mar 2008 09:58:10 -0800	[thread overview]
Message-ID: <47CC3C32.4000509@zytor.com> (raw)
In-Reply-To: <20080303175557.GA26718@elte.hu>

Ingo Molnar wrote:
> * Nish Aravamudan <nish.aravamudan@gmail.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.

The PSE bit in the PTE becomes the PATX bit.  It shouldn't ever be set 
in Linux.

	-hpa

  reply	other threads:[~2008-03-03 17:59 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-03-01 18:56 Arjan van de Ven
2008-03-03  7:46 ` Ingo Molnar
2008-03-03  9:13   ` Ingo Molnar
2008-03-03 16:41     ` Arjan van de Ven
2008-03-03 17:40       ` Ingo Molnar
2008-03-03 17:51         ` Nish Aravamudan
2008-03-03 17:55           ` Ingo Molnar
2008-03-03 17:58             ` H. Peter Anvin [this message]
2008-03-03 18:36         ` Arjan van de Ven
2008-03-03 18:44           ` Linus Torvalds
2008-03-03 22:00             ` Arjan van de Ven
2008-03-04  1:05               ` Arjan van de Ven
2008-03-04  6:53                 ` Ingo Molnar
2008-03-05 15:35                   ` Arjan van de Ven
2008-03-09 11:56             ` Ingo Molnar
2008-03-09 17:27               ` Linus Torvalds
2008-03-09 18:57                 ` Ingo Molnar
2008-03-10  2:45                 ` Jeremy Fitzhardinge
2008-03-10  4:35                 ` Paul Mackerras
2008-03-03 21:13           ` Segher Boessenkool
2008-03-03 21:22             ` Segher Boessenkool
2008-03-03 22:33               ` Segher Boessenkool
2008-03-03 22:55                 ` H. Peter Anvin
2008-03-03 22:56                 ` Jeremy Fitzhardinge
2008-03-03 23:04                   ` H. Peter Anvin
2008-03-04  6:58             ` Ingo Molnar
2008-03-03 17:15 ` Nish Aravamudan

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