On Wed, Jul 31, 2013 at 11:01:11PM +0100, Peter Maydell wrote: > On 31 July 2013 22:56, Richard W.M. Jones <rjo...@redhat.com> wrote: > > It's quite exciting the virtio-mmio made it into qemu. Are extra > > guest kernel components needed too? (I'm using 3.9.9-302.fc19.armv7hl > > but could try a later kernel) > > I think you're OK there, the support's been in the kernel for > much longer than it's been in QEMU. > > > Anyway, I tried to get it to work, but can't quite work out the qemu > > command line. So far I have: > > > > $ ~/d/qemu/arm-softmmu/qemu-system-arm -M vexpress-a15 -cpu cortex-a15 \ > > -nographic -kernel kernel -initrd initrd \ > > -drive file=root,if=virtio \ > > -append "root=/dev/vda" > > qemu-system-arm: -drive file=root,if=virtio: No 'PCI' bus found for device > > 'virtio-blk-pci' > > You need to specify things longhand with the virtio-blk-device etc > devices, because the shortcuts all assume virtio is PCI. So in > this case: > > -drive if=none,file=root,id=foo \ > -device virtio-blk-device,drive=foo
Thanks. For the record, here is the final command line that boots as far as the kernel [I'm still working on my initrd ..]: ~/d/qemu/arm-softmmu/qemu-system-arm \ -m 512 -M vexpress-a9 -machine kernel_irqchip=on \ -kernel kernel -initrd initrd \ -drive if=none,file=root,id=foo -device virtio-blk-device,drive=foo \ -append "root=/dev/vda console=ttyAMA0 rootwait earlyprintk debug" \ -serial stdio Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Fedora Windows cross-compiler. Compile Windows programs, test, and build Windows installers. Over 100 libraries supported. http://fedoraproject.org/wiki/MinGW
