Re: [Qemu-devel] e1000 autoneg timing, piix/osx

[Alexander Graf]

On 03.07.2014, at 15:17, Gabriel L. Somlo <address@hidden> 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