linux-kernel - Re: [PATCH V4 0/5] mlx5 ConnectX control misc driver

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Date: Thu, 15 Feb 2024 13:08:42 +0100
From: Jiri Pirko <jiri@...nulli.us>
To: Christoph Hellwig <hch@...radead.org>
Cc: Jakub Kicinski <kuba@...nel.org>, Saeed Mahameed <saeed@...nel.org>,
	Arnd Bergmann <arnd@...db.de>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Leon Romanovsky <leonro@...dia.com>,
	Jason Gunthorpe <jgg@...dia.com>, Jiri Pirko <jiri@...dia.com>,
	Leonid Bloch <lbloch@...dia.com>, Itay Avraham <itayavr@...dia.com>,
	Saeed Mahameed <saeedm@...dia.com>,
	David Ahern <dsahern@...nel.org>,
	Aron Silverton <aron.silverton@...cle.com>,
	andrew.gospodarek@...adcom.com, linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org
Subject: Re: [PATCH V4 0/5] mlx5 ConnectX control misc driver

Thu, Feb 15, 2024 at 08:00:40AM CET, hch@...radead.org wrote:
>On Wed, Feb 14, 2024 at 07:48:32AM -0800, Jakub Kicinski wrote:

[...]


>> > I think all maintainers can and should voice the
>> > opinions, be those technical or political, but trying to block a useful
>> > feature without lots of precedence because it is vaguely related to the
>> > subsystem is not helpful. 
>> 
>> Not sure what you mean by "without lots of precedence" but you can ask
>
>Should have been with.  Just about every subsystem with complex devices
>has this kind of direct interface for observability and co in at least
>some drivers.

What about configuration? How do you ensure the direct FW/HW access
is used only for observability/debug purposes. I mean, if you can't,
I think it is incorrect to name it that way, isn't it?