> > but it may need update host side pci virtio driver. > Thanks, is it possible to use MSI-X as well? The virtio spec > indicates to use legacy irq or > MSI-X only. I supposed yes. It is depend MSI controller type in EP side. But not like standard PCI MSI-X, it is platform MSI-X irq. If use GIC-its, it should support MSI-X. Thomas Gleixner is working on pre-device msi irq domain. https://lore.kernel.org/all/20221121135653.208611233@xxxxxxxxxxxxx I hope Thomas can finish their work soon. so I can continue my patch upstream work. https://lore.kernel.org/imx/87wn7evql7.ffs@tglx/T/#u > > > Best, > Shunsuke.
