On Tue, Jun 10, 2014 at 01:47:09PM -0700, Stephen Hemminger wrote: > 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. > /sys/bus/pci/devices/<device>/irq
also indicates which legacy irq is assigned to a given device Neil
