Date: Wed, 28 Jan 2004 10:42:50 -0500 From: John Baldwin <jhb@FreeBSD.org> To: Andrew Gallatin <gallatin@cs.duke.edu>, Tom Ponsford <tponsford@theriver.com> Cc: freebsd-alpha@freebsd.org Subject: Re: Same problem, new year 2100A machine check Message-ID: <200401281042.50762.jhb@FreeBSD.org> In-Reply-To: <16407.1903.816168.318651@grasshopper.cs.duke.edu> References: <4011B6F6.5040306@theriver.com> <40143372.8090207@theriver.com> <16407.1903.816168.318651@grasshopper.cs.duke.edu>
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On Tuesday 27 January 2004 07:50 pm, Andrew Gallatin wrote: > Tom Ponsford writes: > > It DOES NOT boot: > > > > FreeBSD 4.xx MP kernel -machine check as it probes PCI/EISA bus > > Interesting. FreeBSD 4 never supported MP on alpha. > > > FreeBSD 5.0, 5.2 uniprocessor kernel or MP kernel--machine check as it > > probes > > Here are some things to do/try. > > 1) Build a kernel with ddb and get a stack trace. > When the machine crashes and you land at the "db>" prompt, type 'tr' > > This might not be incredibly helpful because machine checks > are not synchronous, but it may narrow things down a little bit. > > 2) Disable all but CPU0 from the SRM console. There's a bitmask > you can set from SRM (I don't remember off the top of my head what it > is, but its probably set to 0xfff now). You can also do 'kern.smp.disabled=1' -- John Baldwin <jhb@FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve" = http://www.FreeBSD.org
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