Re: [libvirt] [PATCH v2 2/2] Allow PCI virtio on ARM "virt" machine
Hello!
Unfortunately thinking about this some more, the current patch
approach might
not be acceptable as is, since current distros as a guest don't support -M
virt with PCI... for example Fedora 21 or 22.
How can this be?
If qemu version is new enough, virt machine should have a PCI controller. You do not have
to supply
any extra options, it's just there. It's in mainstream. Or do your distros
artificially raise
version number?
Or are you talking about distros themselves? But... Again, how? Do you have "Generic
PCI
controller" and virtio-PCI drivers disabled in .config of your kernel? Why?
Shouldn't this be fixed
then?
virtio-PCI has much better performance than virtio-mmio, because you can use vhost-net
with irqfds
on it.
Kind regards,
Pavel Fedin
Expert Engineer
Samsung Electronics Research center Russia