linux-kernel - Re: clearly mark DMA_OPS support as an architecture feasture

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Message-ID: <CACGkMEvB20-iwNKepBdJBNAvxN-5+MduxnX6XDbPFsVA4hNz5A@mail.gmail.com>
Date: Mon, 26 Aug 2024 14:32:15 +0800
From: Jason Wang <jasowang@...hat.com>
To: Christoph Hellwig <hch@....de>
Cc: "Michael S . Tsirkin" <mst@...hat.com>, iommu@...ts.linux.dev, 
	Marek Szyprowski <m.szyprowski@...sung.com>, Robin Murphy <robin.murphy@....com>, 
	Sakari Ailus <sakari.ailus@...ux.intel.com>, Bingbu Cao <bingbu.cao@...el.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: clearly mark DMA_OPS support as an architecture feasture

On Mon, Aug 26, 2024 at 2:30 PM Christoph Hellwig <hch@....de> wrote:
>
> On Mon, Aug 26, 2024 at 02:27:27PM +0800, Jason Wang wrote:
> > Actually I meant, we can extend the virtio_config_ops to allow mapping
> > ops there, then simulator and VDUSE can hook the map ops there.
>
> From a quick glance that feels like the right layer of abstraction,
> although the config part of the name feels wrong at that point.

Right, or we could have a dedicated map_ops instead of trying to use
virtio_config_ops.

Thanks

>