Udo Wolter wrote: > > I read about an nmi-watchdog in the documentation of the kernel. > Maybe I can find more information regarding the hard lockup of the > machine when I switch this feature on. I've never done this before > (virtually I never planned to go that deep in the linux kernel *sigh*) > so please be patient until I can give you more informations.
If you get an oops message from the nmi-watchdog, please post it here. The nmi-watchdog will not catch all lockups, though. If e.g. a DMA transfer goes to the wrong address (due to a race condition), and overwrites essential data/code (like exception handlers...) the NMI won't help. > PS: What does DEBI and GPIO stands for ? What is the purpose of those > terms ? The saa7146 data sheet can be found somewhere on the net. DEBI = data bus extension interface GPIO = general purpose I/O DEBI irq is triggered after a DMA transfer from/to the dual-ported RAM (DPRAM) on the av7110-card is finished. The av7110 firmware can also request irqs to the PC via a GPIO line. It uses some locations in DPRAM (IRQ_STATE etc.) to communicate the request details. Johannes -- Info: To unsubscribe send a mail to [EMAIL PROTECTED] with "unsubscribe linux-dvb" as subject.
