All, the new driver homed under drivers/net/ethernet/netronome/nfp/ has some direct MSI-X table manipulation which quite clearly is incompatible with Xen. According to the comment preceding the function, bypassing the Linux IRQ subsystem is intentional here. Irrespective of the question of whether that's a good idea, this also bypassing the abstractions allowing MSI to work on Xen clearly needs addressing. Does anyone have any thoughts on how to reasonably achieve this? Calling pci_msi_unmask_irq() would seem to be an option (the symbol at least is exported), but likely isn't intended to be used that way.
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