On 9 January 2014 12:25, Barak Wasserstrom <wba...@gmail.com> wrote: > Hi, > I would like to utilize virtio-net and vhost_net on an ARM Cortex A15 > machine using qemu-system-arm & KVM. > I have few questions: > 1. Do i need to build qemu-system-arm myself, or apt-get install it? When i > apt-get install it i get "KVM not supported for this target. "kvm" > accelerator does not exist. No accelerator found!".
This sounds like either: (1) you're using too old a version of QEMU and need a newer one (2) you configured QEMU without KVM support Provided you have QEMU 1.6 or later it shouldn't matter whose version you're using. > 2. Do i need to execute qemu-system-arm directly or through virsh? Does it > matter? I know nothing about virsh but I don't expect it matters. It's probably easier to get things working by running qemu-system-arm directly first, before you try to work out how to get virsh to start qemu with the correct arguments. > 3. Must i use a machine that supports PCI controller or not? And if so, > which machine supports it? I saw that 'virt' and 'vexpress' don't support > it. No. For KVM to work you need to use an A15 guest CPU; there are no A15 boards in QEMU which have a PCI controller. So instead you have to use the vexpress-a15 or virt machine's virtio-mmio support. Note that generally the command line syntax for this is different from that used by x86: you need to create virtio-*-device devices, not virtio-* or virtio-*-pci devices, and you can't rely on shorthands like if=virtio. So for instance for a block device you need -drive if=none,file=root,id=foo -device virtio-blk-device,drive=foo thanks -- PMM
