Re: [Qemu-ppc] [RFC PATCH qemu] spapr_pci: Create PCI-express root bus by default

[Alexey Kardashevskiy]

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