Hi All, When I tested mainline qemu(commit 7b87a25f49), it reports smmuv3 event 0x10 during kernel booting up.
qemu command which I use is as below: qemu-system-aarch64 -machine virt,kernel_irqchip=on,gic-version=3,iommu=smmuv3 \ -kernel Image -initrd minifs.cpio.gz \ -enable-kvm -net none -nographic -m 3G -smp 6 -cpu host \ -append 'rdinit=init console=ttyAMA0 ealycon=pl0ll,0x90000000 maxcpus=3' \ -device pcie-root-port,port=0x8,chassis=0,id=pci.0,bus=pcie.0,multifunction=on,addr=0x2 \ -device pcie-root-port,port=0x9,chassis=1,id=pci.1,bus=pcie.0,addr=0x2.0x1 \ -device virtio-blk-pci,drive=drive0,id=virtblk0,num-queues=8,packed=on,bus=pci.1 \ -drive file=/home/boot.img,if=none,id=drive0,format=raw smmuv3 event 0x10 log: [...] [ 1.962656] virtio-pci 0000:02:00.0: Adding to iommu group 0 [ 1.963150] virtio-pci 0000:02:00.0: enabling device (0000 -> 0002) [ 1.964707] virtio_blk virtio0: 6/0/0 default/read/poll queues [ 1.965759] virtio_blk virtio0: [vda] 2097152 512-byte logical blocks (1.07 GB/1.00 GiB) [ 1.966934] arm-smmu-v3 9050000.smmuv3: event 0x10 received: [ 1.967442] input: gpio-keys as /devices/platform/gpio-keys/input/input0 [ 1.967478] arm-smmu-v3 9050000.smmuv3: 0x0000020000000010 [ 1.968381] clk: Disabling unused clocks [ 1.968677] arm-smmu-v3 9050000.smmuv3: 0x0000020000000000 [ 1.968990] PM: genpd: Disabling unused power domains [ 1.969424] arm-smmu-v3 9050000.smmuv3: 0x0000000000000000 [ 1.969814] ALSA device list: [ 1.970240] arm-smmu-v3 9050000.smmuv3: 0x0000000000000000 [ 1.970471] No soundcards found. [ 1.970902] arm-smmu-v3 9050000.smmuv3: event 0x10 received: [ 1.971600] arm-smmu-v3 9050000.smmuv3: 0x0000020000000010 [ 1.971601] arm-smmu-v3 9050000.smmuv3: 0x0000020000000000 [ 1.971601] arm-smmu-v3 9050000.smmuv3: 0x0000000000000000 [ 1.971602] arm-smmu-v3 9050000.smmuv3: 0x0000000000000000 [ 1.971606] arm-smmu-v3 9050000.smmuv3: event 0x10 received: [ 1.971607] arm-smmu-v3 9050000.smmuv3: 0x0000020000000010 [ 1.974202] arm-smmu-v3 9050000.smmuv3: 0x0000020000000000 [ 1.974634] arm-smmu-v3 9050000.smmuv3: 0x0000000000000000 [ 1.975005] Freeing unused kernel memory: 10112K [ 1.975062] arm-smmu-v3 9050000.smmuv3: 0x0000000000000000 [ 1.975442] Run init as init process Another information is that if "maxcpus=3" is removed from the kernel command line, it will be OK. I am not sure if there is a bug about vsmmu. It will be very appreciated if anyone know this issue or can take a look at it. Thanks, Zhou
