Re: [Qemu-devel] [PATCH] virtio: unbreak virtio-pci with IOMMU after caching ring translations

[Jason Wang]

On 2017年03月02日 18:30, Paolo Bonzini wrote:
> On 02/03/2017 08:47, Jason Wang wrote:
> > > > Fixes: c611c76417f5 ("virtio: add MemoryListener to cache ring
> > > > translations")
> > > > Cc: Paolo Bonzini <address@hidden>
> > > > Signed-off-by: Jason Wang <address@hidden>
> > > This is very ugly. I guess it's better than broken IOMMU ...
> > > Paolo?
> > Maybe we can delay the registering of memory listener on bus master
> > enabling or status setting.
> Can we add a callback to PCIDeviceClass, and invoke it from
> pci_init_bus_master?
>
> Paolo

This looks pci specific, I post a fix that reset the dma_as during 
status set which can solve this issue too. Please have a look.

Thanks