We found an issue that the ENETC network port of our i.MX95 platform (arm64) does not work based the latest linux-next tree. According to my observation, the MSI-X interrupts statistics from "cat /proc/interrupts" are all 0. root@imx95evk:~# cat /proc/interrupts | grep eth0 123: 0 0 0 0 0 0 ITS-PCI-MSIX-0002:00:00.0 1 Edge eth0-rxtx0 124: 0 0 0 0 0 0 ITS-PCI-MSIX-0002:00:00.0 2 Edge eth0-rxtx1 125: 0 0 0 0 0 0 ITS-PCI-MSIX-0002:00:00.0 3 Edge eth0-rxtx2 126: 0 0 0 0 0 0 ITS-PCI-MSIX-0002:00:00.0 4 Edge eth0-rxtx3 127: 0 0 0 0 0 0 ITS-PCI-MSIX-0002:00:00.0 5 Edge eth0-rxtx4 128: 0 0 0 0 0 0 ITS-PCI-MSIX-0002:00:00.0 6 Edge eth0-rxtx5 So I reverted this patch and then the MSI-X interrupts return to normal. root@imx95evk:~# cat /proc/interrupts | grep eth0 123: 4365 0 0 0 0 0 ITS-PCI-MSIX-0002:00:00.0 1 Edge eth0-rxtx0 124: 0 194 0 0 0 0 ITS-PCI-MSIX-0002:00:00.0 2 Edge eth0-rxtx1 125: 0 0 227 0 0 0 ITS-PCI-MSIX-0002:00:00.0 3 Edge eth0-rxtx2 126: 0 0 0 219 0 0 ITS-PCI-MSIX-0002:00:00.0 4 Edge eth0-rxtx3 127: 0 0 0 0 176 0 ITS-PCI-MSIX-0002:00:00.0 5 Edge eth0-rxtx4 128: 0 0 0 0 0 233 ITS-PCI-MSIX-0002:00:00.0 6 Edge eth0-rxtx5 It looks like that this patch causes this issue, but I don't know about the PCI MSI driver, so please help investigate this issue, thanks.
