On Mon, Jul 23, 2018 at 07:46:09AM +0530, Anshuman Khandual wrote:

There is a redundant definition of virtio_has_iommu_quirk in the tools
directory (tools/virtio/linux/virtio_config.h) which does not seem to
be used any where. I guess that can be removed without problem.

It's there just to make tools/virtio build.
Try
	make -C tools/virtio/
In fact I see there's a missing definition for
dma_rmb/dma_wmb there, I'll post a patch.

-- 
MST