linux-kernel - Re: [PATCH] arm64: move --fix-cortex-a53-843419 linker test to Kconfig

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20210326143630.GD5126@arm.com>
Date:   Fri, 26 Mar 2021 14:36:30 +0000
From:   Catalin Marinas <catalin.marinas@....com>
To:     Masahiro Yamada <masahiroy@...nel.org>
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Nathan Chancellor <nathan@...nel.org>,
        Will Deacon <will@...nel.org>
Subject: Re: [PATCH] arm64: move --fix-cortex-a53-843419 linker test to
 Kconfig

Hi Masahiro,

On Wed, Mar 24, 2021 at 04:11:28PM +0900, Masahiro Yamada wrote:
> $(call ld-option, --fix-cortex-a53-843419) in arch/arm64/Makefile is
> evaluated every time even for Make targets that do not need the linker,
> such as "make ARCH=arm64 install".
> 
> Recently, the Kbuild tree queued up a patch to avoid needless
> compiler/linker flag evaluation. I beleive it is a good improvement
> itself, but causing a false-positive warning for arm64 installation
> in linux-next. (Thanks to Nathan for the report)
> 
> Kconfig can test the linker capability just once, and store it in the
> .config file. The build and installation steps that follow do not need
> to test the liniker over again.
> 
> Reported-by: Nathan Chancellor <nathan@...nel.org>
> Signed-off-by: Masahiro Yamada <masahiroy@...nel.org>
> ---
> 
> I was not sure what the preferred CONFIG option name is.
> Please suggest a one if you have a better idea.
> 
> 
>  arch/arm64/Kconfig  | 3 +++
>  arch/arm64/Makefile | 2 +-
>  2 files changed, 4 insertions(+), 1 deletion(-)

Would you like this patch to go in via the arm64 tree or you will queue
it via the kbuild tree?

Thanks.

-- 
Catalin