On Wednesday 25 July 2007 10:05, John Sigler wrote: > # cat /proc/interrupts > CPU0 > 0: 37 XT-PIC-XT timer > 1: 2 XT-PIC-XT i8042 > 2: 0 XT-PIC-XT cascade > 7: 0 XT-PIC-XT acpi > 10: 175 XT-PIC-XT eth2, Dta1xx > 11: 1129 XT-PIC-XT eth0 > 12: 4 XT-PIC-XT eth1 > 14: 21482 XT-PIC-XT ide0 > NMI: 0 > LOC: 161632 > ERR: 0 > MIS: 0 > > IRQ 10 is shared between a NIC and an I/O board. > > For eth2, the kernel said: > ACPI: PCI Interrupt 0000:00:0a.0[A] -> Link [LNKC] > -> GSI 10 (level, low) -> IRQ 10 > > For Dta1xx, the kernel said: > ACPI: PCI Interrupt 0000:02:0e.0[A] -> Link [LNKC] > -> GSI 10 (level, low) -> IRQ 10 > > Is it possible to avoid the two boards sharing IRQ 10? Maybe. In this configuration, INTA of the two devices is physically connected to the same wire on the device-side of the interrupt re-mapper -- so you'd have to change the configuration. If you have an IOAPIC and can enable it, that will not hurt -- though unless something else changes, these devices are still tied together on the device-side of the mapper. So if you can physically move one of the devices to another slot that is your best bet. I'd need a bunch of info from your system to tell you what you can do ahead of time, including full dmesg, lspci -vv and acpidump. -Len - To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
