linux-kernel - Re: [PATCH 02/25] dma-mapping: add a Kconfig symbol to indicated arch_dma_prep

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Message-ID: <20190503113655.GB55449@arrakis.emea.arm.com>
Date:   Fri, 3 May 2019 12:36:55 +0100
From:   Catalin Marinas <catalin.marinas@....com>
To:     Christoph Hellwig <hch@....de>
Cc:     Robin Murphy <robin.murphy@....com>,
        Joerg Roedel <joro@...tes.org>,
        Will Deacon <will.deacon@....com>,
        Tom Lendacky <thomas.lendacky@....com>,
        iommu@...ts.linux-foundation.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 02/25] dma-mapping: add a Kconfig symbol to indicated
 arch_dma_prep_coherent presence

On Tue, Apr 30, 2019 at 06:51:51AM -0400, Christoph Hellwig wrote:
> Add a Kconfig symbol that indicates an architecture provides a
> arch_dma_prep_coherent implementation, and provide a stub otherwise.
> 
> This will allow the generic dma-iommu code to use it while still
> allowing to be built for cache coherent architectures.
> 
> Signed-off-by: Christoph Hellwig <hch@....de>
> Reviewed-by: Robin Murphy <robin.murphy@....com>

Acked-by: Catalin Marinas <catalin.marinas@....com>