linux-kernel - Re: [PATCH] hwspinlock: export structures that affects the KABI

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Message-ID: <aIh5K1hvk_n8cch-@infradead.org>
Date: Tue, 29 Jul 2025 00:32:59 -0700
From: Christoph Hellwig <hch@...radead.org>
To: Yu Jugen <yujugen@...wei.com>
Cc: ohad@...ery.com, bjorn.andersson@...aro.org, baolin.wang7@...il.com,
	linux-remoteproc@...r.kernel.org, linux-kernel@...r.kernel.org,
	nixiaoming@...wei.com, wangliang101@...wei.com,
	yangkangming@...wei.com
Subject: Re: [PATCH] hwspinlock: export structures that affects the KABI

On Mon, Jul 28, 2025 at 10:11:51AM +0800, Yu Jugen wrote:
> From: Jugen Yu <yujugen@...wei.com>
> 
> The member "hwlock" in struct regmap is defined with struct hwspinlock.
> Both regmap_write and regmap_read use struct regmap as a argument, so
> their KABI are affected by the hwspinlock structures.

There is no such thing as a KABI, and moving things into a header
"just because" is not acceptable.