linux-kernel - Re: [PATCH] riscv: fix build with binutils 2.38

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Message-ID: <20220401065309.dizbkleyw44auhbo@pengutronix.de>
Date:   Fri, 1 Apr 2022 08:53:09 +0200
From:   Marc Kleine-Budde <mkl@...gutronix.de>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     Aurelien Jarno <aurelien@...el32.net>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        stable <stable@...r.kernel.org>,
        Kito Cheng <kito.cheng@...il.com>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        "open list:RISC-V ARCHITECTURE" <linux-riscv@...ts.infradead.org>,
        Sparse Mailing-list <linux-sparse@...r.kernel.org>,
        ukl@...gutronix.de,
        Luc Van Oostenryck <luc.vanoostenryck@...il.com>
Subject: Re: [PATCH] riscv: fix build with binutils 2.38

On 31.03.2022 11:16:53, Linus Torvalds wrote:
> On Thu, Mar 31, 2022 at 3:51 AM Marc Kleine-Budde <mkl@...gutronix.de> wrote:
> >
> > Cc += linux-sparse, Uwe, Luc Van Oostenryck
> >
> > tl;dr:
> >
> > A recent change in the kernel regarding the riscv -march handling breaks
> > current sparse.
> 
> Gaah. Normally sparse doesn't even look at the -march flag, but for
> riscv it does, because it's meaningful for the predefined macros.
> 
> Maybe that 'die()' shouldn't be so fatal. And maybe add a few more
> extensions (but ignore them) to the parsing.
> 
> Something ENTIRELY UNTESTED like the attached.

Works-for-me:

|   CHECK   /srv/work/frogger/socketcan/linux/drivers/net/can/usb/etas_es58x/es58x_core.c
| WARNING: invalid argument to '-march': 'zicsr_zifencei'

Tested-by: Marc Kleine-Budde <mkl@...gutronix.de>

Regards,
Marc

-- 
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