Messages in this thread | | | Subject | Re: [PATCH 5/7] dma-mapping: Provide CONFIG_ARCH_DMA_DEFAULT_COHERENT | From | Jiaxun Yang <> | Date | Tue, 21 Feb 2023 18:18:58 +0000 |
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> 2023年2月21日 17:58,Christoph Hellwig <hch@lst.de> 写道: > > On Tue, Feb 21, 2023 at 12:46:11PM +0000, Jiaxun Yang wrote: >> Provide a kconfig option to allow arches to manipulate default >> value of dma_default_coherent in Kconfig. > > I don't see the win over just doing this by setting dma_default_coherent > in the early boot code.
I just don’t want to dig into every archs’ early boot code to decide a good timing for setting this variable.
Also as we do have a OF_DMA_DEFAULT_COHERENT before it makes more sense to me.
Thanks - Jiaxun
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