linux-kernel - Re: [PATCH net-next 6/8] virtio: introduce packed ring defines

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Date:   Thu, 5 Jul 2018 19:30:18 +0800
From:   Jason Wang <jasowang@...hat.com>
To:     Maxime Coquelin <maxime.coquelin@...hat.com>, mst@...hat.com,
        kvm@...r.kernel.org, virtualization@...ts.linux-foundation.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     wexu@...hat.com, tiwei.bie@...el.com, jfreimann@...hat.com
Subject: Re: [PATCH net-next 6/8] virtio: introduce packed ring defines



On 2018年07月05日 04:15, Maxime Coquelin wrote:
>
>
> On 07/03/2018 07:38 AM, Jason Wang wrote:
>> diff --git a/include/uapi/linux/virtio_ring.h 
>> b/include/uapi/linux/virtio_ring.h
>> index 6d5d5fa..71c7a46 100644
>> --- a/include/uapi/linux/virtio_ring.h
>> +++ b/include/uapi/linux/virtio_ring.h
>> @@ -43,6 +43,8 @@
>>   #define VRING_DESC_F_WRITE    2
>>   /* This means the buffer contains a list of buffer descriptors. */
>>   #define VRING_DESC_F_INDIRECT    4
>> +#define VRING_DESC_F_AVAIL      7
>> +#define VRING_DESC_F_USED    15
>
> For consistency, you may want to make VRING_DESC_F_AVAIL and 
> VRING_DESC_F_USED to represent the bit mask and not the bit position,
> as done for VRING_DESC_F_WRITE and VRING_DESC_F_INDIRECT.
>
> Regards,
> Maxime

Yes, Tiwei has the same comment.

Will fix this.

Thanks