linux-kernel - Re: your mail

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Date:   Thu, 7 May 2020 13:00:36 +0200
From:   Thomas Bogendoerfer <tsbogend@...ha.franken.de>
To:     Jiaxun Yang <jiaxun.yang@...goat.com>
Cc:     linux-mips@...r.kernel.org, clang-built-linux@...glegroups.com,
        "Maciej W . Rozycki" <macro@...ux-mips.org>,
        Fangrui Song <maskray@...gle.com>,
        Kees Cook <keescook@...omium.org>,
        Nathan Chancellor <natechancellor@...il.com>,
        Paul Burton <paulburton@...nel.org>,
        Masahiro Yamada <masahiroy@...nel.org>,
        Jouni Hogander <jouni.hogander@...kie.com>,
        Kevin Darbyshire-Bryant <ldir@...byshire-bryant.me.uk>,
        Borislav Petkov <bp@...e.de>,
        Heiko Carstens <heiko.carstens@...ibm.com>,
        linux-kernel@...r.kernel.org
Subject: Re: your mail

On Wed, May 06, 2020 at 01:52:45PM +0800, Jiaxun Yang wrote:
> Subject: [PATCH v6] MIPS: Truncate link address into 32bit for 32bit kernel
> In-Reply-To: <20200413062651.3992652-1-jiaxun.yang@...goat.com>
> 
> LLD failed to link vmlinux with 64bit load address for 32bit ELF
> while bfd will strip 64bit address into 32bit silently.
> To fix LLD build, we should truncate load address provided by platform
> into 32bit for 32bit kernel.
> 
> Signed-off-by: Jiaxun Yang <jiaxun.yang@...goat.com>
> Link: https://github.com/ClangBuiltLinux/linux/issues/786
> Link: https://sourceware.org/bugzilla/show_bug.cgi?id=25784
> Reviewed-by: Fangrui Song <maskray@...gle.com>
> Reviewed-by: Kees Cook <keescook@...omium.org>
> Tested-by: Nathan Chancellor <natechancellor@...il.com>
> Cc: Maciej W. Rozycki <macro@...ux-mips.org>
> ---
> V2: Take MaskRay's shell magic.
> 
> V3: After spent an hour on dealing with special character issue in
> Makefile, I gave up to do shell hacks and write a util in C instead.
> Thanks Maciej for pointing out Makefile variable problem.
> 
> v4: Finally we managed to find a Makefile method to do it properly
> thanks to Kees. As it's too far from the initial version, I removed
> Review & Test tag from Nick and Fangrui and Cc instead.
> 
> v5: Care vmlinuz as well.
> 
> v6: Rename to LIKER_LOAD_ADDRESS 
> ---
>  arch/mips/Makefile                 | 13 ++++++++++++-
>  arch/mips/boot/compressed/Makefile |  2 +-
>  arch/mips/kernel/vmlinux.lds.S     |  2 +-
>  3 files changed, 14 insertions(+), 3 deletions(-)

applied to mips-next.

Thomas.

-- 
Crap can work. Given enough thrust pigs will fly, but it's not necessarily a
good idea.                                                [ RFC1925, 2.3 ]