linux-kernel - Re: [PATCH] virtio-blk: Fix kconfig option

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Date:	Wed, 5 Sep 2012 09:04:41 +0300
From:	"Michael S. Tsirkin" <mst@...hat.com>
To:	Asias He <asias@...hat.com>
Cc:	Rusty Russell <rusty@...tcorp.com.au>,
	Kent Overstreet <koverstreet@...gle.com>,
	linux-kernel@...r.kernel.org,
	virtualization@...ts.linux-foundation.org
Subject: Re: [PATCH] virtio-blk: Fix kconfig option

On Wed, Sep 05, 2012 at 01:54:07PM +0800, Asias He wrote:
> On 09/05/2012 01:48 PM, Michael S. Tsirkin wrote:
> > On Wed, Sep 05, 2012 at 12:22:58PM +0800, Asias He wrote:
> >> On 09/04/2012 02:23 PM, Rusty Russell wrote:
> >>> Kent Overstreet <koverstreet@...gle.com> writes:
> >>>
> >>>> CONFIG_VIRTIO isn't exposed, everything else is supposed to select it
> >>>> instead.
> >>>
> >>> This is a slight mis-understanding.  It's supposed to be selected by
> >>> the particular driver, probably virtio_pci in your case.
> >>
> >> virtio_mmio selects virtio as well.
> >>
> >> drivers/virtio/Kconfig
> >> config VIRTIO_MMIO
> >>        select VIRTIO
> >> config VIRTIO_PCI
> >>        select VIRTIO
> >>
> >> How about this:
> >> config VIRTIO_BLK
> >>        depends on EXPERIMENTAL && (VIRTIO_PCI || VIRTIO_MMIO)
> > 
> > Isn't this exactly what depends on VIRTIO achieves?
> 
> Yes. But this gives the information that virtio_blk depends on one of
> the virtio transport: virito_pci or virtio_mmio.

It can work with any transport.

> -- 
> Asias
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