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From: Christoph Hellwig <hch@lst.de>
To: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Robin Murphy <robin.murphy@arm.com>, Christoph Hellwig <hch@lst.de>,
	iommu@lists.linux.dev, Marek Szyprowski <m.szyprowski@samsung.com>,
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Subject: Re: [PATCH 1/6] dma-direct: add depdenencies to
 CONFIG_DMA_GLOBAL_POOL
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On Mon, Oct 09, 2023 at 01:10:26PM +0200, Geert Uytterhoeven wrote:
> RISCV_DMA_NONCOHERENT does not select DMA_GLOBAL_POOL,
> ARCH_R9A07G043 selects DMA_GLOBAL_POOL.
> RISCV_DMA_NONCOHERENT does select DMA_DIRECT_REMAP if MMU.

Yeah, and we'll basically need to split RISCV_DMA_NONCOHERENT into
an option for each type of non-coherent support.  This is why we
should never have added support for any of the non-standard versions,
as it's turning into a giant mess.