On Sat, 2016-11-12 at 10:22 -0500, Jerry Stuckle wrote: > Ian, > > Thanks for clarifying this - I misunderstood your previous statement > and > thought it was the Wheezy kernel which supported virtio and not > Jessie. > > However, I am already running Jessie.
The logs you posted earlier contain: [ 0.000000] Linux version 3.2.0-4-vexpress (debian-ker...@lists.debian.org) (gcc version 4.6.3 (Debian 4.6.3-14) ) #1 SMP Debian 3.2.73-2+deb7u3 which is from the Wheezy kernel (vexpress flavour). You can see in http s://tracker.debian.org/pkg/linux that 3.2.x is shown as oldstable (Wheezy) while the Jessie (stable) kernel is 3.16 based. You can also see in https://packages.debian.org/search?keywords=linux-image-vexpress that the vexpress flavour went away after Wheezy, it was subsumed into https://packages.debian.org/search?keywords=linux-image-armmp in Jessie. > The only non-PCI nic QEMU supports for a bridge is the virtio_device. You seem to have inferred some linkage between the device model (the virtual/emulated device, configured with -device) and the networking backend (the virtual network infrastructure, e.g. bridge etc, configured with -netdev) where I do not believe such a linkage exists. Grabbing netboot/vmlinuz, netboot/initrd.gz and device-tree/vexpress- v2p-ca9.dtb from http://ftp.uk.debian.org/debian/dists/jessie/main/inst aller-armhf/current/images/ lets me boot and detect networking with: qemu-system-arm -M vexpress-a9 -cpu cortex-a9 -kernel vmlinuz -initrd initrd.gz -append console=ttyAMA0,115200 -dtb vexpress-v2p-ca9.dtb -net nic,model=lan9118,netdev=net0 -netdev user,id=net0 or I can switch to a tap device with (need nographic due to sudo): sudo qemu-system-arm -M vexpress-a9 -cpu cortex-a9 -kernel vmlinuz -initrd initrd.gz -append console=ttyAMA0,115200 -dtb vexpress-v2p-ca9.dtb -net nic,model=lan9118,netdev=net0 -netdev tap,id=net0 -nographic I don't have a bridge setup on this machine so I can't try that precisely but I hope that has demonstrated that the emulation and the netdev are independent. Note that I'm passing -dtb here because it is a Jessie kernel, with the Wheezy kernel this would not be necessary. > The one used for SLIRP is > not an option. Not that it would help anyway - it's a very limited > emulation, and the reason I need to get a bridge running. As I say, the emulation and the user of bridge vs slirp are independent. Although it is a bit moot since if you switch the Jessie kernel virtio net should work fine anyway and will most likely be faster. Ian.
