linux-kernel - Re: [PATCH 4/7] dma-mapping: Always provide dma_default

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Message-ID: <20230221175813.GC15247@lst.de>
Date:   Tue, 21 Feb 2023 18:58:13 +0100
From:   Christoph Hellwig <hch@....de>
To:     Jiaxun Yang <jiaxun.yang@...goat.com>
Cc:     linux-mips@...r.kernel.org, linux-kernel@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org, tsbogend@...ha.franken.de,
        mpe@...erman.id.au, paul.walmsley@...ive.com, palmer@...belt.com,
        robh+dt@...nel.org, hch@....de, m.szyprowski@...sung.com,
        robin.murphy@....com
Subject: Re: [PATCH 4/7] dma-mapping: Always provide dma_default_coherent

On Tue, Feb 21, 2023 at 12:46:10PM +0000, Jiaxun Yang wrote:
> dma_default_coherent can be useful for determine default coherency
> even on arches without noncoherent support.

How?