Re: [PATCH] x86/sfi: fix ioapic gsi range

From: Alan Cox
Date: Tue Jun 08 2010 - 04:01:54 EST

> > You may not use a 1-1 mapping if you don't have legacy irqs. Linux
> > irqs 0-15 are the ISA irqs you may not use those irq numbers for

Linux IRQ 0 is "no IRQ assigned", except buried in certain bits of arch
specific historical knowledge.

Also calling 1-15 ISA IRQ lines is also somewhat misleading given they
are almost certainly routing for PCI devices. "PIC IRQ routing" maybe -
but even that is not really true on a lot of PC hardware today except by
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at
Please read the FAQ at