jerome lacoste writes: > I have a VIA Epia M10000 board that crashes very badly (and pretty > often, especially when using DMA). I want to fix that. > > Serial console + magic SysRQ didn't help so I am going the nmi > watchdog way. But in order to have nmi watchdog I need APIC, right? > > The C3 processor seems to support IOAPIC. > (http://www.via.com.tw/en/products/processors/c3/specs.jsp) > > But: > - I don't see anything in the BIOS related to APIC. > - grep APIC /lib/modules/`uname -r`/build/.config shows me that all > APIC options are 'y'. > - dmesg | grep APIC tells me "no local APIC present or hardware disabled". > - adding lapic kernel parameter doesn't change that. > - and of course, nmi_watchdog=1 or 2 gives me NMI count 0 in > /proc/interrupts. > > Did I miss something when it comes to enabling IOAPIC support on C3 > processor?
Unless you have a pre-release engineering part for a future product, then your C3 has no local APIC, and hence no I/O APIC functionality. I know some C3 specs pages list I/O APIC support, but if you look in the datasheets for current products you find zero APIC support. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
