From mboxrd@z Thu Jan  1 00:00:00 1970
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Subject: Re: [PATCH v3 0/3] virtio DMA API core stuff
Date: Wed, 28 Oct 2015 17:36:53 +0900
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To: Christian Borntraeger <borntraeger@de.ibm.com>, "Michael S. Tsirkin" <mst@redhat.com>, Andy Lutomirski <luto@kernel.org>
Cc: linux-s390 <linux-s390@vger.kernel.org>, Joerg Roedel <jroedel@suse.de>, KVM <kvm@vger.kernel.org>, Sebastian Ott <sebott@linux.vnet.ibm.com>, linux-kernel@vger.kernel.org, virtualization@lists.linux-foundation.org, Martin Schwidefsky <schwidefsky@de.ibm.com>, Paolo Bonzini <pbonzini@redhat.com>, dwmw2@infradead.org, Christoph Hellwig <hch@lst.de>
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On Wed, 2015-10-28 at 16:40 +0900, Christian Borntraeger wrote:
> We have discussed that at kernel summit. I will try to implement a dummy dma_ops for
> s390 that does 1:1 mapping and Ben will look into doing some quirk to handle "old"
> code in addition to also make it possible to mark devices as iommu bypass (IIRC,
> via device tree, Ben?)

Something like that yes. I'll look into it when I'm back home.

Cheers,
Ben.