Re: [Qemu-devel] [PATCH] IRQ sharing in PCI bus

[Fabrice Bellard]

andrzej zaborowski wrote:
> This allows multiple PCI devices on a bus to use the same IRQ lines.
> The signals from all devices are ORed. It will only work if the guest
> OS'es drivers supports that.
>
> Linux guest required that to have scsi disks and usb devices working
> at the same time on an emulated Versatile PB machine.

PCI IRQ sharing is already implemented, at least for piix3. You should 
look at that code and try to fix the related code in other PCI controllers.

Regards,

Fabrice.