Re: [PATCH V13 4/6] mdev: introduce mediated virtio bus

From: Jason Wang <jasowang@redhat.com>
To: Jason Gunthorpe <jgg@mellanox.com>,
	"Michael S. Tsirkin" <mst@redhat.com>
Cc: "rdunlap@infradead.org" <rdunlap@infradead.org>,
	"jakub.kicinski@netronome.com" <jakub.kicinski@netronome.com>,
	"christophe.de.dinechin@gmail.com"
	<christophe.de.dinechin@gmail.com>,
	"kvm@vger.kernel.org" <kvm@vger.kernel.org>,
	"hch@infradead.org" <hch@infradead.org>,
	"airlied@linux.ie" <airlied@linux.ie>,
	"heiko.carstens@de.ibm.com" <heiko.carstens@de.ibm.com>,
	"dri-devel@lists.freedesktop.org"
	<dri-devel@lists.freedesktop.org>,
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	"borntraeger@de.ibm.com" <borntraeger@de.ibm.com>,
	haotian.wang
Subject: Re: [PATCH V13 4/6] mdev: introduce mediated virtio bus
Date: Tue, 19 Nov 2019 10:41:31 +0800	[thread overview]
Message-ID: <a09f528f-cfca-69cf-4728-91ff33c5caa7@redhat.com> (raw)
In-Reply-To: <20191118202843.GN3873@mellanox.com>

On 2019/11/19 上午4:28, Jason Gunthorpe wrote:
> On Mon, Nov 18, 2019 at 03:27:13PM -0500, Michael S. Tsirkin wrote:
>> On Mon, Nov 18, 2019 at 01:41:00PM +0000, Jason Gunthorpe wrote:
>>> On Mon, Nov 18, 2019 at 06:59:21PM +0800, Jason Wang wrote:
>>>> +struct bus_type mdev_virtio_bus_type;
>>>> +
>>>> +struct mdev_virtio_device {
>>>> +	struct mdev_device mdev;
>>>> +	const struct mdev_virtio_ops *ops;
>>>> +	u16 class_id;
>>>> +};
>>> This seems to share nothing with mdev (ie mdev-vfio), why is it on the
>>> same bus?
>> I must be missing something - which bus do they share?
> mdev_bus_type ?
>
> Jason

Note: virtio has its own bus: mdev_virtio_bus_type. So they are not the 
same bus.

Thanks

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