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

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Message-Id: <20190220085809.GC3992@osiris>
Date:   Wed, 20 Feb 2019 09:58:09 +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 Sat, Feb 09, 2019 at 12:34:20PM -0800, Laura Abbott wrote:
> On 2/5/19 12:43 PM, Heiko Carstens wrote:
> >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:
> >>>>
> >>>>  ./arch/s390/include/asm/jump_label.h: Assembler messages:
> >>>>  ./arch/s390/include/asm/jump_label.h:23: Error: bad expression
> >>>>  ./arch/s390/include/asm/jump_label.h:23: Error: junk at end of line, first unrecognized character is `r'
> >>>>  make[1]: *** [scripts/Makefile.build:277: init/main.o] Error 1
> >...
> >>I've had to turn off s390 in Fedora until this gets fixed :(
> >
> >Laura, the patch below should fix this (temporarily). If possible,
> >could you give it a try? It seems to work for me.
> >
> >Subject: [PATCH] s390: disable section anchors
> Tested-by: Laura Abbott <labbott@...hat.com><

The patch won't be used. In the meantime Ilya provided a gcc 9 and
kernel patch which should fix this. The kernel patch is available here
https://git.kernel.org/pub/scm/linux/kernel/git/s390/linux.git/commit/?h=features&id=146448524bddbf6dfc62de31957e428de001cbda
and will go upstream during the next merge window.

Note: this obviously also requires to update the gcc 9 version in
Fedora, so it contains Ilya's patch, to be able to compile the kernel.

Thanks,
Heiko