linux-kernel - Re: [PATCH V3 0/2] uapi: Add support for GENMASK

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Message-ID: <CAAH8bW9sJmwKd19sJzpGrQ5Tr_4fYMyvLnfFyahhxxkG6r6GbA@mail.gmail.com>
Date: Thu, 1 Aug 2024 07:43:23 -0700
From: Yury Norov <yury.norov@...il.com>
To: Anshuman Khandual <anshuman.khandual@....com>
Cc: linux-kernel@...r.kernel.org, ardb@...nel.org, 
	Andrew Morton <akpm@...ux-foundation.org>, Rasmus Villemoes <linux@...musvillemoes.dk>, 
	Arnd Bergmann <arnd@...db.de>, linux-arch@...r.kernel.org
Subject: Re: [PATCH V3 0/2] uapi: Add support for GENMASK_U128()

On Thu, Aug 1, 2024 at 12:16 AM Anshuman Khandual
<anshuman.khandual@....com> wrote:
>
> This adds support for GENMASK_U128() and some corresponding tests as well.
> GENMASK_U128() generated 128 bit masks will be required later on the arm64
> platform for enabling FEAT_SYSREG128 and FEAT_D128 features.
>
> Because GENMAKS_U128() depends on __int128 data type being supported in the
> compiler, its usage needs to be protected with CONFIG_ARCH_SUPPORTS_INT128.
>
> Cc: Andrew Morton <akpm@...ux-foundation.org>
> Cc: Yury Norov <yury.norov@...il.com>
> Cc: Rasmus Villemoes <linux@...musvillemoes.dk>
> Cc: Arnd Bergmann <arnd@...db.de>>
> Cc: linux-kernel@...r.kernel.org
> Cc: linux-arch@...r.kernel.org

For the patches:

Reviewed-by: Yury Norov <yury.norov@...il.com>

This series doesn't include a real use-case for the new macros. Do you
have some?
I can take it via my branch, but I need at least one use-case to not
merge dead code.

Thanks,
Yury