linux-kernel - Re: [PATCH RESEND V2] vdpa: introduce virtio pci driver

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Date:   Wed, 10 Jun 2020 14:16:26 +0800
From:   Jason Wang <jasowang@...hat.com>
To:     "Michael S. Tsirkin" <mst@...hat.com>
Cc:     linux-kernel@...r.kernel.org,
        virtualization@...ts.linux-foundation.org, rob.miller@...adcom.com,
        lingshan.zhu@...el.com, eperezma@...hat.com, lulu@...hat.com,
        shahafs@...lanox.com, hanand@...inx.com, mhabets@...arflare.com,
        gdawar@...inx.com, saugatm@...inx.com, vmireyno@...vell.com,
        zhangweining@...jie.com.cn, eli@...lanox.com
Subject: Re: [PATCH RESEND V2] vdpa: introduce virtio pci driver


On 2020/6/10 下午2:07, Michael S. Tsirkin wrote:
> On Wed, Jun 10, 2020 at 01:49:51PM +0800, Jason Wang wrote:
>> This patch introduce a vDPA driver for virtio-pci device. It bridges
>> the virtio-pci control command to the vDPA bus. This will be used for
>> developing new features for both software vDPA framework and hardware
>> vDPA feature.
>>
>> Compared to vdpa_sim, it has several advantages:
>>
>> - it's a real device driver which allow us to play with real hardware
>>    features
>> - type independent instead of networking specific
>>
>> Note that since virtio specification does not support get/restore
>> virtqueue state. So we can not use this driver for VM. This can be
>> addressed by extending the virtio specification.
>>
>> Consider the driver is mainly for testing and development for vDPA
>> features, it can only be bound via dynamic ids to make sure it's not
>> conflict with the drivers like virtio-pci or IFCVF.
>>
>> Signed-off-by: Jason Wang<jasowang@...hat.com>
> error: sha1 information is lacking or useless (drivers/vdpa/Kconfig).
>
> which tree is this on top of?


Your vhost.git vhost branch, HEAD is bbea3bcfd1d6 vdpa: fix typos in the 
comments for __vdpa_alloc_device()

Do I need to use other branch?

Thanks


>