Date: Thu, 3 Sep 2009 16:51:47 -0400 From: Jung-uk Kim <jkim@FreeBSD.org> To: Marko Zec <zec@icir.org> Cc: svn-src-head@FreeBSD.org, svn-src-all@FreeBSD.org, src-committers@FreeBSD.org Subject: Re: svn commit: r196769 - in head/sys: amd64/amd64 i386/i386 Message-ID: <200909031651.49575.jkim@FreeBSD.org> In-Reply-To: <200909032225.50210.zec@icir.org> References: <200909021602.n82G2mpE000812@svn.freebsd.org> <200909032225.50210.zec@icir.org>
next in thread | previous in thread | raw e-mail | index | archive | help
On Thursday 03 September 2009 04:25 pm, Marko Zec wrote: > On Wednesday 02 September 2009 18:02:48 Jung-uk Kim wrote: > > Author: jkim > > Date: Wed Sep 2 16:02:48 2009 > > New Revision: 196769 > > URL: http://svn.freebsd.org/changeset/base/196769 > > > > Log: > > - Work around ACPI mode transition problem for recent NVIDIA > > 9400M chipset based Intel Macs. Since r189055, these platforms > > started freezing when ACPI is being initialized for unknown > > reason. For these platforms, we just use the old PAT layout. > > Note this change is not enough to boot fully on these platforms > > because of other problems but it makes debugging possible. Note > > MacBook5,2 may be affected as well but it was not added here > > because of lack of hardware to test. > > - Initialize PAT MSR fully instead of reading and modifying it > > for safety. > > Perhaps I'm missing something, but I fail to understand what is the > purpose / use of variable pat_tested here? Without it, bad things may happen while APs are being initialized in SMP case. Jung-uk Kim
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200909031651.49575.jkim>