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Message-ID: <20180605042229-mutt-send-email-mst@kernel.org>
Date: Tue, 5 Jun 2018 04:25:37 +0300
From: "Michael S. Tsirkin" <mst@...hat.com>
To: Benjamin Herrenschmidt <benh@...nel.crashing.org>
Cc: Anshuman Khandual <khandual@...ux.vnet.ibm.com>,
virtualization@...ts.linux-foundation.org,
linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
aik@...abs.ru, robh@...nel.org, joe@...ches.com,
elfring@...rs.sourceforge.net, david@...son.dropbear.id.au,
jasowang@...hat.com, mpe@...erman.id.au, hch@...radead.org
Subject: Re: [RFC V2] virtio: Add platform specific DMA API translation for
virito devices
On Tue, Jun 05, 2018 at 09:26:56AM +1000, Benjamin Herrenschmidt wrote:
> I would like to keep however the ability to bypass the iommu for
> performance reasons
So that's easy, clear the IOMMU flag and this means "bypass the IOMMU".
--
MST
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