linux-kernel - Re: [RFC V2] virtio: Add platform specific DMA API translation for virito devices

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Message-ID: <20180604125530.GA16378@infradead.org>
Date:   Mon, 4 Jun 2018 05:55:30 -0700
From:   Christoph Hellwig <hch@...radead.org>
To:     "Michael S. Tsirkin" <mst@...hat.com>
Cc:     Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        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 Mon, Jun 04, 2018 at 03:43:09PM +0300, Michael S. Tsirkin wrote:
> Another is that given the basic functionality is in there, optimizations
> can possibly wait until per-device quirks in DMA API are supported.

We have had per-device dma_ops for quite a while.