[Qemu-devel] Re: [RFC PATCH 0/5] QEMU VFIO device assignment

[Avi Kivity]

On 07/11/2010 11:24 PM, Alex Williamson wrote:
> One other thing to be aware of is that vfio requires devices to be
> PCI-2.3 compliant in order to support DisINTx.  This allows vfio to
> support devices making use of shared INTx interrupts, but excludes older
> devices that users maybe managed to get assigned to an exclusive
> interrupt for kvm style assignment.
>
> I suppose we might be able to make vfio work with either pci 2.3 devices
> or older devices with exclusive interrupts if that ends up affecting
> many users.
>    

PCI 2.3 is already old enough (6-7 years?) that I believe we can require it.

--
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.