Linas Vepstas writes: > Err .. it was cpu 0 that was spinlocked. Are interrupts not > distributed?
We have some bogosities in the xics code that I noticed a couple of days ago. Basically we only set the xics to distribute interrupts to all cpus if (a) the affinity mask is equal to CPU_MASK_ALL (which has ones in every bit position from 0 to NR_CPUS-1) and (b) all present cpus are online (cpu_online_map == cpu_present_map). Otherwise we direct interrupts to the first cpu in the affinity map. So you can easily have the affinity mask containing all the online cpus and still not get distributed interrupts. So in your case it's quite possible that all interrupts were directed to cpu 0. Paul. _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
