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From: Jung-uk Kim <jkim@FreeBSD.org>
To: Patrick Lamaiziere <patfbsd@davenulle.org>
Date: Tue, 16 Nov 2010 15:05:05 -0500
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Subject: Re: [Call for Tests] PAT issue on Apple hardware
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On Tuesday 16 November 2010 02:33 pm, Patrick Lamaiziere wrote:
> Le Mon, 15 Nov 2010 20:36:42 -0500,
>
> Jung-uk Kim <jkim@FreeBSD.org> a écrit :
> > Often times I hear complaints like "my Mac hangs after upgrading
> > to 8.1" or "snapshot CD hangs on my brand new Mac".  I know some
> > of these complaints started happening when we switched to new PAT
> > layout.  It is so puzzling because it never happened on non-Apple
> > hardware, AFAIK.  I really like to fix this problem but I cannot
> > afford a Mac. :-P
>
> Thanks.
>
> > If you are one of those lucky people, please test the attached
> > patch and report your hardware model and any improvement or
> > regression.
>
> Shall we test if the model is not listed in the patch and already
> works fine? (I'm using a MacBookPro3,1 on FreeBSD 8.1)
>
> if (strncmp(sysenv, "MacBook5,1", 10)
> strncmp(sysenv, "MacBookPro5,5",
> strncmp(sysenv, "Macmini3,1", 10)
> strncmp(sysenv, "iMac9,1", 7) == 0)

There's no need if it already works fine.  It seems the new PAT layout 
only broke recent models with NVidia chipset.  Also, this patch won't 
apply to stable pmap.c.

Actually, I am working on more complex version now.  When I am done, 
I'll make patches for both branches.

Thanks,

Jung-uk Kim