I have a CX341a plugged into my motherboard with a split card. But I couldn't passthrough it to my openwrt vm, it always said that
Failed to set up TRIGGER eventfd signaling for interrupt INTX-0: VFIO_DEVICE_SET_IRQS failure: Device or resource busy. I've tried to change the options of PCIe ACS but it didn't work.
lzydiskstation-diagnostics-20230424-0840.zip