linux-kernel - Re: [PATCH] x86/boot/compressed: Disable relocation relaxation for non-pie link

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Message-ID: <20200811224436.GA1302731@rani.riverdale.lan>
Date:   Tue, 11 Aug 2020 18:44:36 -0400
From:   Arvind Sankar <nivedita@...m.mit.edu>
To:     Nick Desaulniers <ndesaulniers@...gle.com>
Cc:     Arvind Sankar <nivedita@...m.mit.edu>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        Fangrui Song <maskray@...gle.com>,
        clang-built-linux <clang-built-linux@...glegroups.com>,
        e5ten.arch@...il.com,
        "maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)" <x86@...nel.org>,
        "H. Peter Anvin" <hpa@...or.com>,
        Masahiro Yamada <masahiroy@...nel.org>,
        Ard Biesheuvel <ardb@...nel.org>,
        Kees Cook <keescook@...omium.org>,
        LKML <linux-kernel@...r.kernel.org>,
        "# 3.4.x" <stable@...r.kernel.org>
Subject: Re: [PATCH] x86/boot/compressed: Disable relocation relaxation for
 non-pie link

On Tue, Aug 11, 2020 at 10:58:40AM -0700, Nick Desaulniers wrote:
> > Cc: stable@...r.kernel.org # 4.19.x
> 
> Thanks Arvind, good write up.  Just curious about this stable tag, how
> come you picked 4.19?  I can see boot failures in our CI for x86+LLD
> back to 4.9.  Can we amend that tag to use `# 4.9`? I'd be happy to
> help submit backports should they fail to apply cleanly.
> https://travis-ci.com/github/ClangBuiltLinux/continuous-integration/builds/179237488
> 

4.19 renamed LDFLAGS to KBUILD_LDFLAGS. For 4.4, 4.9 and 4.14 the patch
needs to be modified, KBUILD_LDFLAGS -> LDFLAGS, so I figured we should
submit backports separately. For 4.19 onwards, it should apply without
changes I think.

Thanks.