[dpdk-dev] [PATCH 00/10] igb_uio patches

[Stephen Hemminger]

On Tue, 10 Jun 2014 19:26:08 +0000
"Carew, Alan" <alan.carew at intel.com> wrote:

> One alternative for us is then to take Neil Horman's idea of scanning /sys/bus/pci/devices/<D:B:D.F>/msi_irqs/
> This gives us at least (MSI | MSI-X) | INT-X, however the Virtio specification mentions MSI-X explicitly for determining the correct offset and might not address the underlying problem my patch set was addressing, I have not tried Virtio with MSI.

MSI doesn't work with virtio. pci_enable_msi() returns error. The device
does not report MSI capability.