[dpdk-dev] [PATCH v2 10/16] Added support for selecting VFIO interrupt type from EAL command-line

[Stephen Hemminger]

Originally igb_uio had code for MSI, but it was broken.
See my patches which fixed that and several other bugs.


On Tue, May 20, 2014 at 8:26 PM, Burakov, Anatoly <anatoly.burakov at intel.com
> wrote:

> Hi Stephen,
>
> > I am not sure that MSI-X has any advantage with only one IRQ, so MSI
> would
> > do.
>
> Igb_uio doesn't support MSI, so I never included MSI support. It can be
> added though, but I don't see much point.
>
> > Then have the code look at the PCI capability of device and fallback to
> INTX if
> > needed. It should also check if INTX works, see kernel for details,
> since some
> > PCI emulation like VMware is broken.
>
> I believe VFIO itself does that already when it sets up interrupts.
>
> Best regards,
> Anatoly Burakov
> DPDK SW Engineer
>
>
>
>