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Re: [PATCH] remove unnecessary PAE pgd set

To: Dave Hansen <haveblue@us.ibm.com>
Subject: Re: [PATCH] remove unnecessary PAE pgd set
From: William Lee Irwin III <wli@holomorphy.com>
Date: Wed, 30 Apr 2003 20:22:15 -0700
Cc: Andrew Morton <akpm@digeo.com>, linux-mm@kvack.org,Paul Larson <plars@linuxtestproject.org>
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On Wed, Apr 30, 2003 at 04:42:25PM -0700, Dave Hansen wrote:
> With PAE on, there are only 4 PGD entries.  The kernel ones never
> change, so there is no need to copy them when a vmalloc fault occurs.
> This was this was causing problems with the split pmd patches, but it is
> still correct for mainline.
> Tested with and without PAE.  I ran it in a loop turning on and off 10
> swap partitions, which is what excited the original bug.
> http://bugme.osdl.org/show_bug.cgi?id=640

I suspect this set_pgd() should go away for non-PAE also.


-- wli
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  - From: Dave Hansen <haveblue@us.ibm.com>

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