On 03/12/16 08:41, Benjamin Herrenschmidt wrote: > On Fri, 2016-12-02 at 16:50 +1100, David Gibson wrote: >> >> Uh.. I don't entirely follow you. From the host point of view there >> are multiple iommu groups (PEs), but from the guest point of view >> there's only one. On the guest side iommu granularity is always >> per-vPHB. > > Ok so the H_PUT_TCE calls affect all the underlying tables ?
Yes, it updates all hardware tables attached to the same guest's LIOBN (which in reality can only be seen on power7 as power8 shares tables between PEs). -- Alexey
