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

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Date: Wed, 14 Feb 2024 23:00:40 -0800
From: Christoph Hellwig <hch@...radead.org>
To: Jakub Kicinski <kuba@...nel.org>
Cc: Christoph Hellwig <hch@...radead.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

On Wed, Feb 14, 2024 at 07:48:32AM -0800, Jakub Kicinski wrote:
> Overreach is unfortunate, I'd love to say "please do merge it as part 
> of RDMA". You probably don't trust my opinion but Jason admitted himself
> this is primarily for RDMA. RDMA is what it is in terms of openness and
> all vendors trying to sell their secret magic sauce.

Common.  RDMA has two important open standards, one of them even done
in IETF that most open of all standards organizations.

> > 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.