linux-kernel - Re: add an API to check if a streamming mapping needs sync calls

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Message-ID: <20200629142225.GA22336@lst.de>
Date:   Mon, 29 Jun 2020 16:22:25 +0200
From:   Christoph Hellwig <hch@....de>
To:     Björn Töpel <bjorn.topel@...el.com>
Cc:     Christoph Hellwig <hch@....de>,
        Magnus Karlsson <magnus.karlsson@...el.com>,
        Jonathan Lemon <jonathan.lemon@...il.com>,
        iommu@...ts.linux-foundation.org, netdev@...r.kernel.org,
        bpf@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: add an API to check if a streamming mapping needs sync calls

On Mon, Jun 29, 2020 at 03:39:01PM +0200, Björn Töpel wrote:
> On 2020-06-29 15:03, Christoph Hellwig wrote:
>> Hi all,
>>
>> this series lifts the somewhat hacky checks in the XSK code if a DMA
>> streaming mapping needs dma_sync_single_for_{device,cpu} calls to the
>> DMA API.
>>
>
> Thanks a lot for working on, and fixing this, Christoph!
>
> I took the series for a spin, and there are (obviously) no performance
> regressions.
>
> Would the patches go through the net/bpf trees or somewhere else?

either the net tree or (my) dma-mapping tree would be fine with me.