[dpdk-dev] Having troubles binding an SR-IOV VF to uio_pci_generic on Amazon instance

[Michael S. Tsirkin]

On Thu, Oct 01, 2015 at 12:22:46PM +0300, Avi Kivity wrote:
> even when they are some users
> prefer to avoid the performance penalty.

I don't think there's a measureable penalty from passing through the
IOMMU, as long as mappings are mostly static (i.e. iommu=pt).  I sure
never saw any numbers that show such.

-- 
MST