> Both igb (recently posted) and ixgbe (also recently posted) support both > MSI and MSI-X. Right now when we try to request MSI-X vectors, if we > fail to acquire what we've asked for, we fall back to MSI support. If > MSI fails to initialize, we fall back to legacy interrupts. So it needs > to be there in case MSI-X allocation fails for the NIC driver.
Hmm, I see I don't understand what this driver is doing. What is a "struct ioatdma_device"? Is this driver requesting interrupts that come from the NIC or the IOAT DMA engine? Anyway, if the NICs support MSI-X, is there any chance of failing to get one MSI-X vectors but then succeeding in getting MSI enabled? How could that happen? I don't see what falling back to MSI buys you beyond more code. - R. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
