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Date:   Fri, 20 Mar 2020 16:02:08 +0100
From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     Christoph Hellwig <hch@lst.de>
Cc:     iommu@lists.linux-foundation.org,
        Alexey Kardashevskiy <aik@ozlabs.ru>,
        linuxppc-dev@lists.ozlabs.org, Lu Baolu <baolu.lu@linux.intel.com>,
        Joerg Roedel <joro@8bytes.org>,
        Robin Murphy <robin.murphy@arm.com>,
        linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/2] dma-mapping: add a dma_ops_bypass flag to struct
 device
Message-ID: <20200320150208.GA761915@kroah.com>
References: <20200320141640.366360-1-hch@lst.de>
 <20200320141640.366360-2-hch@lst.de>
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On Fri, Mar 20, 2020 at 03:16:39PM +0100, Christoph Hellwig wrote:
> Several IOMMU drivers have a bypass mode where they can use a direct
> mapping if the devices DMA mask is large enough.  Add generic support
> to the core dma-mapping code to do that to switch those drivers to
> a common solution.
> 
> Signed-off-by: Christoph Hellwig <hch@lst.de>
> ---
>  include/linux/device.h      |  6 ++++++
>  include/linux/dma-mapping.h | 30 ++++++++++++++++++------------
>  kernel/dma/mapping.c        | 36 +++++++++++++++++++++++++++---------
>  3 files changed, 51 insertions(+), 21 deletions(-)

Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>