linux-kernel - Re: [PATCH next 11/14] bit: Strengthen compile-time tests in GENMASK() and BIT()

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Message-ID: <20260123082027.GJ3183987@ZenIV>
Date: Fri, 23 Jan 2026 08:20:27 +0000
From: Al Viro <viro@...iv.linux.org.uk>
To: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc: Vincent Mailhol <mailhol@...nel.org>, Philip Li <philip.li@...el.com>,
	Chris Li <sparse@...isli.org>,
	David Laight <david.laight.linux@...il.com>,
	kernel test robot <lkp@...el.com>,
	Nathan Chancellor <nathan@...nel.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...nel.org>,
	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
	Arnd Bergmann <arnd@...db.de>, linux-arch@...r.kernel.org,
	linux-kernel@...r.kernel.org, Yury Norov <yury.norov@...il.com>,
	Jani Nikula <jani.nikula@...el.com>,
	Kees Cook <keescook@...omium.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	oe-kbuild-all@...ts.linux.dev,
	Linux Memory Management List <linux-mm@...ck.org>
Subject: Re: [PATCH next 11/14] bit: Strengthen compile-time tests in
 GENMASK() and BIT()

On Fri, Jan 23, 2026 at 10:11:19AM +0200, Andy Shevchenko wrote:

> > Al Viro's fork just adds 8 commit on top of the upstream sparse repo.
> > Wouldn't it be possible to just merge those?
> 
> Ideally yes, but you also should kick the distro's asses to update it, and
> the sparse should bump its version...
> 
> > That would be much less confusing.
> 
> Seems Al become a sparse maintainer de facto :-)

Huh?  What happened to Chris?  FWIW, I do have some followups to that series
sitting locally; need to get that finished (mostly for proper __VA_OPT__
handling; that got stalled on the lovely corner cases where the interplay
with side effects of macro expansion is really nasty - gcc and clang do
not agree and gcc is arguably buggy) and posted.

I've done quite a bit of sparse work over the years, but I would rather
prefer somebody else as overall maintainer, TYVM...