[dropped stable@ since I'm not on it and I suspect it may not accept non-member posts]
> BTW, can someone knowledgeable tell me if watchdog better > be firing SMI or NMI when it runs down? > My bet is on NMI, but who knows. It may depend on whether you want the BIOS, or FreeBSD, handling the interrupt. Unless you are running *very* old h/w, there's a good chance the BIOS intercepts SMI, even with a protected-mode OS running, and I wouldn't be surprised if the BIOS' response to a watchdog timeout were an immediate reboot. It might be good to check the motherboard and/or BIOS manuals. > Or maybe I am trying to ask a different question. > I see that NMI2SMI_EN bit of TCO1_CNT is set 1 on my machine and > our watchdog driver is careful to preserve this bit unmodified. > This means that watchdog would try to cause SMI instead of NMI. > On the other hand I see that bit GBL_SMI_EN of SMI_EN is set to > zero, which means that chipset would never generate an SMI. > So I think this is why I don't see anything happening. > > Now, would should try first - reset NMI2SMI_EN to zero or set > GBL_SMI_EN to 1? If you want to handle the interrupt in FreeBSD, I'd try resetting NMI2SMI_EN to zero. _______________________________________________ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "[EMAIL PROTECTED]"
