Hi everyone, isolcpus has the option `managed_irq`, which supposedly assigns the IRQs to housekeeping CPUs if possible. According to the description of isolcpus, the affinity of managed IRQs can not be changed via /proc/irq. I've searched the kernel documentation and the kernel source code for more information about managed IRQs / managed interrupts, but haven't found any documentation (aside from isolcpus). Specifically, I'm interested in what makes managed IRQs different (as in why can't the affinity be changed via procfs), and what kind of IRQs are "managed"? Also, I'd like to verify if the cmdline parameter `irqaffinity` affects managed IRQs, or if it only modifies the default affinity for IRQs which can be changed via procfs. Thanks Jonathan
