linux-kernel - Re: [PATCH v3 1/2] x86/mm: Identify the end of the kernel area to be reserved

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Date:   Wed, 24 Jul 2019 17:57:35 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Thomas Gleixner <tglx@...utronix.de>
Cc:     "H.J. Lu" <hjl.tools@...il.com>,
        Mike Lothian <mike@...eburn.co.uk>,
        Tom Lendacky <thomas.lendacky@....com>, bhe@...hat.com,
        Borislav Petkov <bp@...en8.de>,
        Dave Hansen <dave.hansen@...ux.intel.com>, lijiang@...hat.com,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Andy Lutomirski <luto@...nel.org>,
        Ingo Molnar <mingo@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        the arch/x86 maintainers <x86@...nel.org>
Subject: Re: [PATCH v3 1/2] x86/mm: Identify the end of the kernel area to be
 reserved

On Wed, Jul 24, 2019 at 05:49:45PM +0200, Thomas Gleixner wrote:
> On Wed, 24 Jul 2019, Greg KH wrote:
> > On Tue, Jul 23, 2019 at 03:44:54PM +0200, Greg KH wrote:
> > > Sorry, I saw that after writing that.  You are right, if the others
> > > don't object, that's fine with me.  I'll go poke the various build
> > > systems that are failing right now on 5.3-rc1 and try to get them fixed
> > > for this reason.
> > 
> > Ok, I dug around and the gold linker is not being used here, only clang
> > to build the source and GNU ld to link, and I am still seeing this
> > error.
> 
> Odd combo.

I'm not disagreeing :)

Wait, does clang link things itself and not need ld?

> > Hm, clang 8 does not cause this error, but clang 9 does.  Let me go poke
> > the people who are providing this version of clang to see if there's
> > something they can figure out.
> 
> Let me try that with my clang variant. Which version of GNU ld are you
> using?

I think it is 2.27:
$ ./ld --version
GNU ld (binutils-2.27-44492f8) 2.27.0.20170315

Which does feel old to me.

I know 2.32 works fine.

Gotta love old tool-chains :(

greg k-h