Date: Wed, 10 Feb 2010 05:16:58 -0800 From: Randall Stewart <rrs@lakerest.net> To: "C. Jayachandran" <c.jayachandran@gmail.com> Cc: freebsd-mips@freebsd.org Subject: Re: Fix for buildworld hang on XLR Message-ID: <0EA6F9BC-9F31-42F9-8759-683A7B9A8721@lakerest.net> In-Reply-To: <98a59be81002092358u1765b9efp640adc8a606a2963@mail.gmail.com> References: <98a59be81002092343w74ef718l148f0f6d683285c4@mail.gmail.com> <dffe84831002092353l5ad44eb2ufef6e5db697a27f7@mail.gmail.com> <98a59be81002092358u1765b9efp640adc8a606a2963@mail.gmail.com>
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JC: Ok I got the buildworld running... It is getting further.. hopefully if it will crash for me I can have a look and see if I can recognize whats going wrong with the above 512M issues... I am sure thats what it is ;-) Probably another left over from that hack I did way back to get pages over 512Meg used ;-) If I get to the pentry crash I will commit your change R On Feb 9, 2010, at 11:58 PM, C. Jayachandran wrote: > On Wed, Feb 10, 2010 at 1:23 PM, Neel Natu <neelnatu@gmail.com> wrote: >> On Tue, Feb 9, 2010 at 11:43 PM, C. Jayachandran >> <c.jayachandran@gmail.com> wrote: >>> Hi Randall, >>> >>> Looks like the buildworld hang was caused by a bug in the GMAC >>> driver. >>> In some cases an additional zero length descriptor was getting added >>> to the descriptor list which makes the GMAC go into underrun >>> condition. Can you see if this fix works for you? >>> >>> The patch is at http://sites.google.com/site/cjayachandran/files/rge.c.diff >>> >>> I still get a crash in pmap_enter during buildworld after quite a >>> long >>> time. It seems that de-referencing the pte in some cases crashes. >>> I'm >>> looking at it. >>> >> >> How much memory do you have installed on your system? Is any of that >> memory mapped above 512MB (physical)? > > It is a 4GB memory system, and there is memory over 512MB. I'm sill > new to this pmap subsystem, so will need some to understand this. > > JC. > ------------------------------ Randall Stewart 803-317-4952 (cell) 803-345-0391(direct)
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