Date: Thu, 4 Sep 2003 09:16:23 -0400 From: Don Bowman <don@sandvine.com> To: 'Mike Silbersack' <silby@silby.com>, Don Bowman <don@sandvine.com> Cc: "'freebsd-hackers@freebsd.org'" <freebsd-hackers@freebsd.org> Subject: RE: non reliable nmi Message-ID: <FE045D4D9F7AED4CBFF1B3B813C85337027426FC@mail.sandvine.com>
next in thread | raw e-mail | index | archive | help
> From: Mike Silbersack [mailto:silby@silby.com] > On Thu, 28 Aug 2003, Don Bowman wrote: > > > I have machdep.ddb_on_nmi=1. > > I can drop into the debugger with the magic > > key sequence. However, when i hit the NMI > > jumper, i don't always go there. Sometimes > > I do. > > The system is 4-way SMP [2xHTT xeon processors] > > with 4.7. > > > > Any suggestion on where my NMI might be going? > > Is your NMI about 106K in size, and does it have the subjects > "Thank you", > "Wicked screensaver" and others? If so, I think I know where it's > going... ? it was actually a serious question. The nmi header on my board goes into the ICH-3 of my chipset, but shorting the jumper out doesn't always enter the debugger. It does sometimes. If I set the NMI_NOW bit in the ICH-3 I always enter the debugger. I was curious if anyone else had seen this behaviour. --don
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?FE045D4D9F7AED4CBFF1B3B813C85337027426FC>