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List:       qemu-discuss
Subject:    Re: [Qemu-discuss] PCI for QEMU on ARM?
From:       Mike Lovell <mike () dev-zero ! net>
Date:       2012-03-05 17:00:24
Message-ID: 4F54F128.7040903 () dev-zero ! net
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On 03/03/2012 09:22 AM, Alex Golec wrote:
> I'm trying to start QEMU on arm with kvm, and I give the following 
> invocation:
>
>  qemu-system-arm -enable-kvm -M vexpress-a9 -drive file=/arm-whee
> zy.img,if=virtio,cache=writeback -append 'root=/dev/mmcblk0 
> console=ttyAMA1 root
> wait earlyprintk' -kernel /zImage-guest -nographic
>
> The idea is to start kvm on arm with virtio, but when I do, QEMU 
> responds with:
>
> qemu-system-arm: -drive 
> file=/arm-wheezy.img,if=virtio,cache=writeback: No 'PCI' bus found for 
> device 'virtio-blk-pci'
>
> Any tips?

i haven't used qemu-arm much. but i would guess that its because you are 
using a machine type that doesn't have a PCI host controller in it. a 
quick googling of 'vexpress-a9' led me to 
https://wiki.linaro.org/PeterMaydell/QemuVersatileExpress which seems to 
indicate that the vexpress-a9 machine type doesn't have a PCI host. i'm 
also guessing that using one of the other board types would have a PCI 
host but i'm not sure which ones. hope that helps.

mike



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