linux-kernel - Re: [PATCH] s390/jump_label: Correct asm contraint

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Message-Id: <20190130085350.GB5299@osiris>
Date:   Wed, 30 Jan 2019 09:53:50 +0100
From:   Heiko Carstens <heiko.carstens@...ibm.com>
To:     Laura Abbott <labbott@...hat.com>
Cc:     Andreas Krebbel <krebbel@...ux.ibm.com>,
        Ilya Leoshkevich <iii@...ux.ibm.com>,
        Martin Schwidefsky <schwidefsky@...ibm.com>,
        linux-s390@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] s390/jump_label: Correct asm contraint

On Tue, Jan 29, 2019 at 08:25:58AM +0100, Laura Abbott wrote:
> On 1/23/19 5:24 AM, Heiko Carstens wrote:
> >On Wed, Jan 23, 2019 at 01:55:13PM +0100, Laura Abbott wrote:
> >>There's a build failure with gcc9:
...
> >Hmmm, this works only for the kernel image, but not for modules, which
> >we compile with "-fPIC", which again doesn't work as described in the
> >referenced bugzilla:
> >                                       ^~~
> >./arch/s390/include/asm/jump_label.h:19:2: note: in expansion of macro 'asm_volatile_goto'
> >   asm_volatile_goto("0: brcl 0,"__stringify(JUMP_LABEL_NOP_OFFSET)"\n"
> >
> >Andreas, Ilya, any idea how to fix this?
> 
> I've had to turn off s390 in Fedora until this gets fixed :(

I assume this means you only turned off CONFIG_JUMP_LABEL on s390
until we have a fix for this?