Date: Tue, 16 Nov 2010 15:30:18 -0500 From: Jung-uk Kim <jkim@FreeBSD.org> To: freebsd-current@FreeBSD.org, freebsd-stable@FreeBSD.org Cc: Ed Schouten <ed@80386.nl>, Hans Petter Selasky <hselasky@c2i.net> Subject: Re: [Call for Tests] PAT issue on Apple hardware Message-ID: <201011161530.20165.jkim@FreeBSD.org> In-Reply-To: <201011152036.48181.jkim@FreeBSD.org> References: <201011152036.48181.jkim@FreeBSD.org>
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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 Thanks! Jung-uk Kim
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