Re: [PATCH v3 2/3] virtio: document feature bit 42

On 6/26/2025 7:45 PM, Parav Pandit wrote:

>> From: Zhu Lingshan <[email protected]>
>> Sent: 23 June 2025 02:07 PM
>>
>> This commit documents feture bit 42
>> VIRTIO_NET_F_GUEST_RSC6
>>
>> Fixes: 94384142 ("content: Declare virtio-net legacy feature bits 41-42")
>> Signed-off-by: Zhu Lingshan <[email protected]>
>> ---
>>   content.tex | 4 ++--
>>   1 file changed, 2 insertions(+), 2 deletions(-)
>>
>> diff --git a/content.tex b/content.tex
>> index 1efc2a5..2e8da46 100644
>> --- a/content.tex
>> +++ b/content.tex
>> @@ -99,10 +99,10 @@ \section{Feature Bits}\label{sec:Basic Facilities of a
>> Virtio Device / Feature B  \begin{description}
>>   \item[0 to 23, and 50 to 127] Feature bits for the specific device type
>>
>> -\item[24 to 41] Feature bits reserved for extensions to the queue and
>> +\item[24 to 42] Feature bits reserved for extensions to the queue and
>>     feature negotiation mechanisms, see \ref{sec:Reserved Feature Bits}
>>
> This does not look accurate.
> Bits 41 and 42 are used by the device specific type and not generic queue related mechanism.
> In this case it is used by the net device.
>
> So right documentation should be,
>
> 0 to 23, 41, 42 and 50 to 127 Feature bits for the specific device type
>
> 24 to 40 Feature bits reserved for extensions to the queue and feature negotiation mechanisms
>
> 43 to 49, and 128 and above Feature bits reserved for future extensions.
OK, this looks better
>
>> -\item[42 to 49, and 128 and above] Feature bits reserved for future
>> extensions.
>> +\item[43 to 49, and 128 and above] Feature bits reserved for future
>> extensions.
>>   \end{description}
>>
>>   \begin{note}
>> --
>> 2.49.0
>>