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Date: Sat, 20 Nov 2010 14:34:04 +0100
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Cc: Ed Schouten <ed@80386.nl>, Hans Petter Selasky <hselasky@c2i.net>
Subject: Re: [Call for Tests] PAT issue on Apple hardware
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On Fri, 19 Nov 2010 19:54:21 +0100, Jung-uk Kim <jkim@freebsd.org> wrote:

> On Tuesday 16 November 2010 03:30 pm, Jung-uk Kim wrote:
>> On Monday 15 November 2010 08:36 pm, Jung-uk Kim wrote:
>> > 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
>> >
>> > If you are one of those lucky people, please test the attached
>> > patch and report your hardware model and any improvement or
>> > regression.
>> >
>> > Also, I added a new tunable "vm.pmap.pat_works" so that you can
>> > turn it off from loader (i.e., "set vm.pmap.pat_works=0") and
>> > restore old behaviour without recompiling a new kernel.
>>
>> I revised this patch to make it more robust.
>>
>> http://people.freebsd.org/~jkim/pat-current.diff
>>
>> Also, I prepared a patch for stable/8.  If you have recent Apple
>> hardware and it hangs with 8.1 or stable/8, please test this patch.
>>
>> http://people.freebsd.org/~jkim/pat-stable.diff
>
> Anyone?  I don't want to commit it blindly. :-(

It works for me ! I have an iMac9,1 (Core2 Duo 2.93 GHz and nVidia GT9200)

This is the first time it boots on FreeBSD 8.x (8.1-STABLE)

Thank you !