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From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Date: Sat, 03 Dec 2016 08:41:04 +1100
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Subject: Re: [Qemu-devel] [Qemu-ppc] [RFC PATCH qemu] spapr_pci: Create
 PCI-express root bus by default
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To: David Gibson <david@gibson.dropbear.id.au>
Cc: Andrea Bolognani <abologna@redhat.com>, Alexey Kardashevskiy <aik@ozlabs.ru>, Greg Kurz <groug@kaod.org>, Paolo Bonzini <pbonzini@redhat.com>, Alex Williamson <alex.williamson@redhat.com>, qemu-ppc@nongnu.org, qemu-devel@nongnu.org, libvir-list@redhat.com, Michael Roth <mdroth@linux.vnet.ibm.com>

On Fri, 2016-12-02 at 16:50 +1100, David Gibson wrote:
>=20
> Uh.. I don't entirely follow you.=C2=A0 From the host point of view the=
re
> are multiple iommu groups (PEs), but from the guest point of view
> there's only one.=C2=A0 On the guest side iommu granularity is always
> per-vPHB.

Ok so the H_PUT_TCE calls affect all the underlying tables ?

Cheers,
Ben.