On 03.07.2014, at 15:17, Gabriel L. Somlo <gso...@gmail.com> wrote: > On Thu, Jul 03, 2014 at 10:04:55AM +0200, Alexander Graf wrote: >>> so Ethernet, SATA, and USB, all sharing IRQ 11. Is there an easy way >>> to force one of those to use a different IRQ ? > > Oh, and on Q35, while Ethernet (and one of the USBs) is still on IRQ 11, > SATA ended up on IRQ 10, and things are fine there... > >> IIRC if you plug the device in a different slot, the irq distribution >> should be different :). > > Sorry for being thick, but I'm still trying to figure out if there's a > command-line way of making that happen. Re-ordering the "-device" > arguments to qemu obviously doesn't make a difference in how they're > assigned...
The magic word is "devfn" :). It's basically the token PCI uses to find out which slot and function id a device is on. You can set "devfn" with the "addr" attribute on -device. Alex
