I had looked at this. It seems to be doing the opposite of what I want. That is, it routes a NMI as an SMI and I need SMI to trigger an NMI. Watchdog timer on 3100 chipset had the ability to send either an NMI or SMI when the timer fired for the first time. I used NMI to generate kernel panic. With 3400 no longer generating NMI on WDT expiry, I'm trying to figure out how I can force memory dump on watchdog expiry.
Sushanth --- On Sat, 2/11/12, Andriy Gapon <a...@freebsd.org> wrote: > From: Andriy Gapon <a...@freebsd.org> > Subject: Re: Generating NMI due to WDT expiry > To: "Sushanth Rai" <sushanth_...@yahoo.com> > Cc: freebsd-hackers@FreeBSD.org > Date: Saturday, February 11, 2012, 3:06 AM > on 11/02/2012 00:42 Sushanth Rai said > the following: > > Basically I would like to force system panic (and take > kernel dump) when > > watchdog time expires. Assuming that timer expired due > to some OS bug, kernel > > memory dump would be very useful. I'm running freebsd > 7.2 on Intel IbexPeak > > chipset. According to specs, the watchdog timer on > IbexPeak first generates > > an SMI and then resets the CPU. Since SMI is handled > within the BIOS, is > > there a way to generate NMI from within BIOS SMI > handler ? I see that kernel > > has support to either enter the debugger or force panic > upon receipt of a > > NMI. > > > > This is not necessarily a FreeBSD question, but would > like to hear any > > thoughts/pointers. > > See this: > http://www.intel.com/content/dam/doc/datasheet/5-chipset-3400-chipset-datasheet.pdf > Search for NMI2SMI_EN. Maybe it's what you want. > > > -- > Andriy Gapon > _______________________________________________ > freebsd-hackers@freebsd.org > mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-hackers > To unsubscribe, send any mail to "freebsd-hackers-unsubscr...@freebsd.org" > _______________________________________________ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "freebsd-hackers-unsubscr...@freebsd.org"
