linux-kernel - Re: [PATCH 16/33] powerpc/powernv: remove dead npu-dma code

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Message-ID: <20181015055008.GA23344@lst.de>
Date:   Mon, 15 Oct 2018 07:50:08 +0200
From:   Christoph Hellwig <hch@....de>
To:     Alexey Kardashevskiy <aik@...abs.ru>
Cc:     Christoph Hellwig <hch@....de>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        linuxppc-dev@...ts.ozlabs.org, iommu@...ts.linux-foundation.org,
        linux-mm@...ck.org, linux-arch@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 16/33] powerpc/powernv: remove dead npu-dma code

On Mon, Oct 15, 2018 at 12:34:02PM +1100, Alexey Kardashevskiy wrote:
> 
> On 10/10/2018 00:24, Christoph Hellwig wrote:
> > This code has been unused since it was merged and is in the way of
> > cleaning up the DMA code, thus remove it.
> > 
> > This effectively reverts commit 5d2aa710 ("powerpc/powernv: Add support
> > for Nvlink NPUs").
> 
> 
> This code is heavily used by the NVIDIA GPU driver.

Not by the that actually exists in the kernel tree, so it simply doesn't
matter.