linux-kernel - Re: [PATCH 1/7] ARM: disallow combining XIP and LTO

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Message-ID: <CAK8P3a128iw+HB5Fp6ZOBCyuK0LypqSXqnkNPQs8sWR1pc8x3g@mail.gmail.com>
Date:   Mon, 12 Mar 2018 17:46:12 +0100
From:   Arnd Bergmann <arnd@...db.de>
To:     Nicolas Pitre <nicolas.pitre@...aro.org>
Cc:     Andi Kleen <ak@...ux.intel.com>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/7] ARM: disallow combining XIP and LTO

On Mon, Mar 12, 2018 at 2:52 PM, Arnd Bergmann <arnd@...db.de> wrote:
> On Mon, Mar 12, 2018 at 3:40 AM, Nicolas Pitre <nicolas.pitre@...aro.org> wrote:
>> On Tue, 20 Feb 2018, Arnd Bergmann wrote:
>
>>> Obviously we want to make the combination work, no idea why it doesn't.
>>
>> Well, it does work regardless of the noise. Here the nm output is piped
>> into sed, and the later exits early when it finds what it is looking
>> for, causing nm to complain about the broken pipe.
>>
>> Here's a patch silencing this bogus error message and fixing other minor
>> issues.
>>
>> ----- >8
>> Subject: [PATCH] ARM: deflate_xip_data.sh: minor fixes
>>
>> Send nm complaints about broken pipe (when sed exits early) to /dev/null.
>> All errors should be printed to stderr.
>> Don't trap on normal exit so the trap can return an error code.
>>
>> Signed-off-by: Nicolas Pitre <nico@...aro.org>
>
> Ah, that explains it, thanks!
>
> Tested-by: Arnd Bergmann <arnd@...db.de>


Nevermind, I confused it with a different problem that I'm running into
with randconfig builds:

arm-linux-gnueabi-nm: 'arch/arm/boot/compressed/../../../../vmlinux':
No such file

I applied your patch, and it did not happen for a couple of randconfigs,
but that is now back. So I did not test the bug you are fixing, and the
thing that I thought you fixed is still there.

        Arnd