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
