linux-kernel - Re: [PATCH v6 4/7] treewide: use get_random

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Message-ID: <Y0U+jRHiYFXTYIN7@osiris>
Date:   Tue, 11 Oct 2022 11:59:41 +0200
From:   Heiko Carstens <hca@...ux.ibm.com>
To:     "Jason A. Donenfeld" <Jason@...c4.com>
Cc:     linux-kernel@...r.kernel.org, patches@...ts.linux.dev,
        Andreas Noever <andreas.noever@...il.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
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        Christoph Böhmwalder 
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Subject: Re: [PATCH v6 4/7] treewide: use get_random_{u8,u16}() when
 possible, part 2

On Mon, Oct 10, 2022 at 05:06:10PM -0600, Jason A. Donenfeld wrote:
> Rather than truncate a 32-bit value to a 16-bit value or an 8-bit value,
> simply use the get_random_{u8,u16}() functions, which are faster than
> wasting the additional bytes from a 32-bit value. This was done by hand,
> identifying all of the places where one of the random integer functions
> was used in a non-32-bit context.
> 
> Reviewed-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> Reviewed-by: Kees Cook <keescook@...omium.org>
> Reviewed-by: Yury Norov <yury.norov@...il.com>
> Signed-off-by: Jason A. Donenfeld <Jason@...c4.com>
> ---
>  arch/s390/kernel/process.c     | 2 +-

For s390:
Acked-by: Heiko Carstens <hca@...ux.ibm.com>