Hi all, I am trying to use QEMU vIOMMU for virtio DMA remapping. When I run the VM, I get the following messages in stderr:
qemu-system-x86_64: vtd_iommu_translate: detected translation failure (dev=01:00:00, iova=0x0) qemu-system-x86_64: New fault is not recorded due to compression of faults qemu-system-x86_64: virtio: zero sized buffers are not allowed My QEMU configuration is: ./qemu-system-x86_64 -M accel=kvm -cpu host -smp 2 -m 4G \ -enable-kvm -machine q35,accel=kvm,kernel-irqchip=split \ -device intel-iommu,x-aw-bits=48,device-iotlb=on,pt=false \ -device ioh3420,id=pcie.1,chassis=1 \ -device virtio-scsi-pci,bus=pcie.1,id=scsi0,iommu_platform=on,ats=on, disable-legacy=on,disable-modern=off \ [...] I use QEMU 3.0.50 and host kernel 4.4.0. I followed the instructions here: https://wiki.qemu.org/Features/VT-d#With_Virtio_Devices to enable DMAR for the virtio-scsi device. I see there is a related thread about this error here: http://qemu.11.n7.nabble.com/PATCH-0-2-virtio-scsi-Fix-QEMU-hang-with-vIOMMU-and-ATS-td598736.html#a599086 Is this still an open issue or it has been solved? Please let me know. Thanks, Nikos
