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Date:   Thu, 4 Jan 2018 09:49:30 +0100
From:   Christoph Hellwig <hch@lst.de>
To:     Michael Ellerman <mpe@ellerman.id.au>
Cc:     Christoph Hellwig <hch@lst.de>, iommu@lists.linux-foundation.org,
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Subject: Re: [PATCH 16/67] powerpc: rename dma_direct_ to dma_nommu_
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References: <20171229081911.2802-1-hch@lst.de> <20171229081911.2802-17-hch@lst.de> <878tdgtwzp.fsf@concordia.ellerman.id.au>
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On Tue, Jan 02, 2018 at 08:45:30PM +1100, Michael Ellerman wrote:
> Christoph Hellwig <hch@lst.de> writes:
> 
> > We want to use the dma_direct_ namespace for a generic implementation,
> > so rename powerpc to the second best choice: dma_nommu_.
> 
> I'm not a fan of "nommu". Some of the users of direct ops *are* using an
> IOMMU, they're just setting up a 1:1 mapping once at init time, rather
> than mapping dynamically.
> 
> Though I don't have a good idea for a better name, maybe "1to1",
> "linear", "premapped" ?

It seems like a nice counter part to the dma_iommu_ops used just about
anywhere else in ppc.

But I'll happily take any maintainer bike shed decision for the next
series.  Remember that in a merge window or two it will hopefully
go away in favor of the new generic dma_direct ops.