Date: Fri, 19 Nov 2010 13:54:21 -0500 From: Jung-uk Kim <jkim@FreeBSD.org> To: freebsd-current@FreeBSD.org Cc: Ed Schouten <ed@80386.nl>, freebsd-stable@freebsd.org, Hans Petter Selasky <hselasky@c2i.net> Subject: Re: [Call for Tests] PAT issue on Apple hardware Message-ID: <201011191354.25486.jkim@FreeBSD.org> In-Reply-To: <201011161530.20165.jkim@FreeBSD.org> References: <201011152036.48181.jkim@FreeBSD.org> <201011161530.20165.jkim@FreeBSD.org>
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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. :-( Jung-uk Kim
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