netdev - Re: [PATCH net-next 0/7] Remove three Sun net drivers

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Date:   Fri, 6 Jan 2023 15:10:55 -0800
From:   Anirudh Venkataramanan <anirudh.venkataramanan@...el.com>
To:     <karl.volz@...cle.com>, <netdev@...r.kernel.org>
CC:     <linux-pci@...r.kernel.org>, <linuxppc-dev@...ts.ozlabs.org>,
        <linux-mips@...r.kernel.org>, <linux-trace-kernel@...r.kernel.org>,
        <sparclinux@...r.kernel.org>, Leon Romanovsky <leon@...nel.org>
Subject: Re: [PATCH net-next 0/7] Remove three Sun net drivers

On 1/6/2023 2:44 PM, Karl Volz wrote:
> 
> 
> On 1/6/23 15:00, Anirudh Venkataramanan wrote:
>> This series removes the Sun Cassini, LDOM vswitch and sunvnet drivers.
>>
>> In a recent patch series that touched these drivers [1], it was suggested
>> that these drivers should be removed completely. git logs suggest that
>> there hasn't been any significant feature addition, improvement or fixes
>> to user-visible bugs in a while. A web search didn't indicate any recent
>> discussions or any evidence that there are users out there who care about
>> these drivers.
>>
>> The idea behind putting out this series is to either establish that these
>> drivers are used and should be maintained, or remove them.
> Anirudh,
> 
> The Sun LDOM vswitch and sunvnet drivers are still in use, please do not 
> remove them or the event tracing.
> We use them internally and you don't see any discussions because they 
> generally work fine (AFAIK).

Hello Karl,

Thanks for chiming in.

Are there recent platforms where these drivers are used? If yes, do you 
know which ones? Or are these drivers useful in old/legacy platforms 
that are still around but perhaps no longer in production?

> I think you are also going to break things by removing Sun Cassini 
> support, but I am not using it personally.

You suspect there are users for this driver as well?

> What user visible bugs are you referring to here?

I was saying I don't see any evidence of recent bug fixes, which would 
make sense if these drivers "just work".

Ani