linux-kernel - Re: [PATCH 2/2] virtio/virtio_ring: Fix the dma_max_mapping

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Date:   Thu, 25 Jul 2019 07:25:29 +0200
From:   Christoph Hellwig <hch@....de>
To:     "Michael S. Tsirkin" <mst@...hat.com>
Cc:     Christoph Hellwig <hch@....de>,
        Robin Murphy <robin.murphy@....com>,
        Eric Auger <eric.auger@...hat.com>, eric.auger.pro@...il.com,
        m.szyprowski@...sung.com, jasowang@...hat.com,
        virtualization@...ts.linux-foundation.org,
        iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] virtio/virtio_ring: Fix the dma_max_mapping_size
 call

On Wed, Jul 24, 2019 at 06:10:53PM -0400, Michael S. Tsirkin wrote:
> Christoph - would a documented API wrapping dma_mask make sense?
> With the documentation explaining how users must
> desist from using DMA APIs if that returns false ...

We have some bigger changes in this are planned, including turning
dma_mask into a scalar instead of a pointer, please stay tuned.