Date: Tue, 10 Feb 2009 12:20:39 -0800 From: Mark Atkinson <atkin901@yahoo.com> To: freebsd-current@freebsd.org Subject: Re: memory alignment problems with -current on amd64? [Found Cause] Message-ID: <gmsnin$qg9$1@ger.gmane.org> References: <gl7hu4$q7k$1@ger.gmane.org> <gmqbv1$jhe$1@ger.gmane.org>
next in thread | previous in thread | raw e-mail | index | archive | help
Mark Atkinson wrote: > Mark Atkinson wrote: >> With recent kernels on HAMMER/amd64 I cannot complete a buildworld. The >> compilation keeps failing with problems like: [...] >> /usr/src/gnu/usr.bin/binutils/as/../../../../contrib/binutils/gas/subsegs.c:205: >> internal compiler error: Bus error: 10 Please submit a full bug report, >> with preprocessed source if appropriate. See >> <URL:http://gcc.gnu.org/bugs.html>; for instructions. *** Error code 1 1 [...] >> If I boot back to a kernel from sources Oct 15th 2008, I can complete a >> buildworld on this machine no problem. >> >> * This is a HP DL385G5 with 1 quad core AMD 2100 and 10G of memory. >> * This the amd64 GENERIC kernel >> * I've tried reducing hw.physmem to 2G, but that didn't make any >> difference. * I will recieve bus errors when running buildworld w/ -j1 >> * If I run buildworld with a larger number the machine will reset w/ no >> panic. [...] > Since I can go back to the Oct 15th kernel and do a complete buildworld, I > can only assume -current has changed since then for amd64 sizing to maybe > access something other than what the e820 method would return? Well, taking the information I knew -- OCT 15th == good, Mid DEC == BAD, I trolled every commit logged between. Eventually I found this one: http://svn.freebsd.org/viewvc/base?view=revision&revision=185715 http://docs.freebsd.org/cgi/mid.cgi?200812061937.mB6JbqAI003273 I set vm.pmap.pg_ps_enabled="0" in /boot/loader.conf, and was able to complete buildworld and -j16 buildworld and -j8 buildkernel no problem. It appears superpage mapping causes alignment problems on this box. -- Mark Atkinson atkin901@yahoo.com (!wired)?(coffee++):(wired);
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?gmsnin$qg9$1>