Re: [PATCH v5 2/3] virtio_pci: Use the DMA API for virtqueues when possible

Il 30/09/2014 17:38, Michael S. Tsirkin ha scritto:

I think that is true but it seems that this will be true for x86 for
QEMU 2.2 unless we make some changes there.
Which we might not have the time for since 2.2 is feature frozen
from tomorrow.
Maybe we should disable the IOMMU in 2.2, this is worth considering.

It is disabled by default, no?  And only supported by Q35 which does not
yet have migration compatibility (though we are versioning it, not sure
why that is the case).

Paolo