linux-kernel - Re: [PATCH] dma-mapping: clear mark DMA ops as an architecture feature

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Message-ID: <ZsmSj6ZBZqBtjALU@kekkonen.localdomain>
Date: Sat, 24 Aug 2024 07:58:07 +0000
From: Sakari Ailus <sakari.ailus@...ux.intel.com>
To: Christoph Hellwig <hch@....de>
Cc: iommu@...ts.linux.dev, Marek Szyprowski <m.szyprowski@...sung.com>,
	Robin Murphy <robin.murphy@....com>,
	Bingbu Cao <bingbu.cao@...el.com>,
	"Michael S . Tsirkin " <mst@...hat.com>,
	Jason Wang <jasowang@...hat.com>, linux-kernel@...r.kernel.org,
	linux-alpha@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-mips@...r.kernel.org, linux-parisc@...r.kernel.org,
	linuxppc-dev@...ts.ozlabs.org, linux-s390@...r.kernel.org,
	sparclinux@...r.kernel.org, linux-media@...r.kernel.org,
	virtualization@...ts.linux.dev, xen-devel@...ts.xenproject.org
Subject: Re: [PATCH] dma-mapping: clear mark DMA ops as an architecture
 feature

Hi Christoph,

On Sat, Aug 24, 2024 at 05:57:58AM +0200, Christoph Hellwig wrote:
> DMA ops are a helper for architectures and not for drivers to override
> the DMA implementation.  Unfortunately driver authors keep ignoring
> this.  Make this more clear by renaming the symbol to ARCH_DMA_OPS,
> have the three drivers overriding it depend on that.  They should
> probably also be marked broken, but we can give them a bit of a grace
> period for that.
> 
> Signed-off-by: Christoph Hellwig <hch@....de>

Acked-by: Sakari Ailus <sakari.ailus@...ux.intel.com> # for IPU6

We'll address this for IPU6 but I can't give a timeline for that right now.

-- 
Kind regards,

Sakari Ailus