linux-kernel - Re: [PATCH v5] random: remove CONFIG_ARCH

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Message-ID: <877d4aeg4t.fsf@mpe.ellerman.id.au>
Date:   Mon, 18 Jul 2022 22:53:38 +1000
From:   Michael Ellerman <mpe@...erman.id.au>
To:     "Jason A. Donenfeld" <Jason@...c4.com>,
        Borislav Petkov <bp@...en8.de>,
        "H. Peter Anvin" <hpa@...or.com>,
        linux-arm-kernel@...ts.infradead.org,
        linuxppc-dev@...ts.ozlabs.org, linux-s390@...r.kernel.org,
        linux-kernel@...r.kernel.org, x86@...nel.org,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        Heiko Carstens <hca@...ux.ibm.com>,
        Alexander Gordeev <agordeev@...ux.ibm.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Arnd Bergmann <arnd@...db.de>, Borislav Petkov <bp@...e.de>
Cc:     "Jason A. Donenfeld" <Jason@...c4.com>
Subject: Re: [PATCH v5] random: remove CONFIG_ARCH_RANDOM

"Jason A. Donenfeld" <Jason@...c4.com> writes:
> When RDRAND was introduced, there was much discussion on whether it
> should be trusted and how the kernel should handle that. Initially, two
> mechanisms cropped up, CONFIG_ARCH_RANDOM, a compile time switch, and
> "nordrand", a boot-time switch.
...
>
>  arch/arm/include/asm/archrandom.h             |  2 ++
>  arch/arm64/Kconfig                            |  8 ------
>  arch/arm64/include/asm/archrandom.h           | 10 --------
>  arch/arm64/kernel/cpufeature.c                |  2 --
>  arch/powerpc/Kconfig                          |  3 ---
>  arch/powerpc/include/asm/archrandom.h         |  3 ---
>  arch/powerpc/include/asm/machdep.h            |  2 --
>  arch/powerpc/platforms/microwatt/Kconfig      |  1 -
>  arch/powerpc/platforms/powernv/Kconfig        |  1 -
>  arch/powerpc/platforms/pseries/Kconfig        |  1 -

Acked-by: Michael Ellerman <mpe@...erman.id.au> (powerpc)

cheers