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From: James Bottomley <James.Bottomley@HansenPartnership.com>
To: "H. Peter Anvin" <hpa@zytor.com>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	"Martin J. Bligh" <mbligh@mbligh.org>
Subject: Re: i386 subarchitectures: boot page table flags
Date: Tue, 30 May 2006 21:21:05 -0500	[thread overview]
Message-ID: <1149042065.3545.49.camel@mulgrave.il.steeleye.com> (raw)
In-Reply-To: <447CF7F5.8010709@zytor.com>

On Tue, 2006-05-30 at 18:57 -0700, H. Peter Anvin wrote:
> Does any of the i386 subarchitectures actually care about the Accessed and Dirty bits in 
> the bootup pagetables (the ones that start at pg0, used before the mm is initialized?)  If 
> not, I'd like to speed up booting by setting those bits at initialization time.

Depends what you mean by "care".  I do hijack pg0 in
voyager_memory_detect() to access the clickmap for ascertaining the
memory layout, but I don't use the accessed or dirty bits.

James



  reply	other threads:[~2006-05-31  2:21 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-05-31  1:57 H. Peter Anvin
2006-05-31  2:21 ` James Bottomley [this message]
2006-05-31  2:49   ` H. Peter Anvin

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