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

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Message-ID: <CAKwvOdnvyVapAJBchivu8SxoQriKEu1bAimm8688EH=uq5YMqA@mail.gmail.com>
Date:   Tue, 11 Aug 2020 16:04:40 -0700
From:   Nick Desaulniers <ndesaulniers@...gle.com>
To:     Arvind Sankar <nivedita@...m.mit.edu>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>
Cc:     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 3:44 PM Arvind Sankar <nivedita@...m.mit.edu> wrote:
>
> 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.

Cool, sounds good.  I'll keep an eye out for when stable goes to pick this up.

tglx, Ingo, BP, can we pretty please get this in tip/urgent for
inclusion into 5.9?
-- 
Thanks,
~Nick Desaulniers