linux-kernel - Re: [tip:master 19/19] include/linux/irq-entry-common.h:201:2: error: unexpected token

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Message-ID: <20250702145425.GS1613376@noisy.programming.kicks-ass.net>
Date: Wed, 2 Jul 2025 16:54:25 +0200
From: Peter Zijlstra <peterz@...radead.org>
To: Mark Rutland <mark.rutland@....com>
Cc: Borislav Petkov <bp@...en8.de>, kernel test robot <lkp@...el.com>,
	Thomas Gleixner <tglx@...utronix.de>, llvm@...ts.linux.dev,
	oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
	x86@...nel.org, Linus Walleij <linus.walleij@...aro.org>,
	Jinjie Ruan <ruanjinjie@...wei.com>
Subject: Re: [tip:master 19/19] include/linux/irq-entry-common.h:201:2:
 error: unexpected token

On Wed, Jul 02, 2025 at 03:16:01PM +0100, Mark Rutland wrote:
> On Wed, Jul 02, 2025 at 03:24:15PM +0200, Borislav Petkov wrote:
> > On Wed, Jul 02, 2025 at 02:16:15PM +0100, Mark Rutland wrote:
> > > Sounds like a plan.
> > 
> > As we figured out on IRC:
> > 
> > https://lore.kernel.org/all/20250616-loongarch-fix-warn-cond-llvm-ias-v1-1-6c6d90bb4466@kernel.org/
> > 
> > "clang's integrated assembler only supports concatenating strings with
> > '.ascii'. There was discussion of allowing '.string' / '.asciz' but it
> > was decided against [1] because it was undesirable to match the behavior
> > of released binutils at the time, where"
> > 
> > and this seems to fix it here:
> > 
> > ---
> > diff --git a/arch/s390/include/asm/bug.h b/arch/s390/include/asm/bug.h
> > index a185855ab158..46d9eb64bd18 100644
> > --- a/arch/s390/include/asm/bug.h
> > +++ b/arch/s390/include/asm/bug.h
> > @@ -9,7 +9,7 @@
> >  #else
> >  #define __BUGVERBOSE_LOCATION(file, line)			\
> >  		.pushsection .rodata.str, "aMS", @progbits, 1;	\
> > -	10002:	.string file;					\
> > +	10002:	.ascii file;					\
> >  		.popsection;					\
> >  								\
> >  		.long 10002b - .;				\
> > 
> 
> IIUC this also needs a trailing "\0" as per the link above, or this
> won't get a NUL-terminator (but will build just fine).

Yup, I ran into this before. Let me go fix that commit.