linux-kernel - Re: [PATCH v5 1/7] bits: split the definition of the asm and non-asm GENMASK()

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Message-ID: <Z8mdk3z7t42CWfmZ@smile.fi.intel.com>
Date: Thu, 6 Mar 2025 15:05:23 +0200
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: mailhol.vincent@...adoo.fr
Cc: Yury Norov <yury.norov@...il.com>,
	Lucas De Marchi <lucas.demarchi@...el.com>,
	Rasmus Villemoes <linux@...musvillemoes.dk>,
	Jani Nikula <jani.nikula@...ux.intel.com>,
	Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
	Rodrigo Vivi <rodrigo.vivi@...el.com>,
	Tvrtko Ursulin <tursulin@...ulin.net>,
	David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, intel-gfx@...ts.freedesktop.org,
	dri-devel@...ts.freedesktop.org,
	Andi Shyti <andi.shyti@...ux.intel.com>,
	David Laight <David.Laight@...lab.com>,
	Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Subject: Re: [PATCH v5 1/7] bits: split the definition of the asm and non-asm
 GENMASK()

On Thu, Mar 06, 2025 at 08:29:52PM +0900, Vincent Mailhol via B4 Relay wrote:
> From: Vincent Mailhol <mailhol.vincent@...adoo.fr>
> 
> In an upcoming change, GENMASK() and its friends will indirectly
> depend on sizeof() which is not available in asm.
> 
> Instead of adding further complexity to __GENMASK() to make it work
> for both asm and non asm, just split the definition of the two
> variants.

...

> -/*
> - * BUILD_BUG_ON_ZERO is not available in h files included from asm files,
> - * disable the input check if that is the case.
> - */

I believe this comment is still valid...

> +#else /* defined(__ASSEMBLY__) */


...here.

Otherwise justify its removal in the commit message.

> +#define GENMASK(h, l)		__GENMASK(h, l)
> +#define GENMASK_ULL(h, l)	__GENMASK_ULL(h, l)
> +
> +#endif /* !defined(__ASSEMBLY__) */

-- 
With Best Regards,
Andy Shevchenko