>Linux does not have generic infrastructure to allow two interrupt >sources to share the same token passed to the kernel. On i386 and x86_64 io_apic.c, see irq_pin_list This advertises to support multiple pins per IRQ. I suspect this code never runs, and simply adds complexity to code that has no shortage of complexity. If somebody can explain to me what a "shared ISA-space IRQ" is supposed to be, I'm all ears. I've had a BUG() in this code for a while waiting for it to be used, and never seen it fire. If we can get rid of that concept, then we have a 1:1 mapping between irqs and apic:pin. Possibly this simplification would be helpful as we re-think how the mapping from cpu:vector -> irq works. -Len - To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
