From mboxrd@z Thu Jan  1 00:00:00 1970
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Subject: Re: [PATCH 3/4] KVM: PPC: Add support for IOMMU in-kernel handling
Date: Mon, 24 Jun 2013 13:58:20 +1000
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Cc: Alex Williamson <alex.williamson@redhat.com>,
	Alexey Kardashevskiy <aik@ozlabs.ru>,
	Alexander Graf <agraf@suse.de>, linuxppc-dev@lists.ozlabs.org,
	Paul Mackerras <paulus@samba.org>,
	"kvm@vger.kernel.org mailing list" <kvm@vger.kernel.org>,
	open list <linux-kernel@vger.kernel.org>,
	kvm-ppc@vger.kernel.org, Rusty Russell <rusty@rustcorp.com.au>,
	Joerg Roedel <joro@8bytes.org>
To: David Gibson <david@gibson.dropbear.id.au>
Return-path: <kvm-ppc-owner@vger.kernel.org>
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Sender: kvm-ppc-owner@vger.kernel.org
List-Id: kvm.vger.kernel.org

On Mon, 2013-06-24 at 13:54 +1000, David Gibson wrote:
> > DDW means an API by which the guest can request the creation of
> > additional iommus for a given device (typically, in addition to the
> > default smallish 32-bit one using 4k pages, the guest can request
> > a larger window in 64-bit space using a larger page size).
> 
> So, would a PAPR gest requesting this expect the new window to have
> a new liobn, or an existing liobn?

New liobn or there is no way to H_PUT_TCE it (it exists in addition
to the legacy window).

Cheers,
Ben.