Re: [Qemu-devel] [PATCH 4/4] s390x/pci: add iommu replay callback

[Yi Min Zhao]

在 2017/8/29 下午5:49, Cornelia Huck 写道:
> On Tue, 29 Aug 2017 11:33:53 +0200
> Cornelia Huck <address@hidden> wrote:
>
> > My question was whether virtio-pci works with your patches on top at
> > all - last time I checked on master, virtio-pci devices failed to
> > realize with a "msi-x is mandatory" message.
> Just checked again, I still get
>
> qemu-system-s390x: -device virtio-rng-pci: MSI-X support is mandatory in the 
> S390 architecture
>
> Any clue to what is missing?
virtio-rng-pci doesn't support msix. But msix is required on s390 arch.
So we avoid plugging any pci device without msix support.