linux-kernel - Re: xtensa port maintenance

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Message-ID: <CAMuHMdU885PUSmqr53-UdJiVBgtMXxPk-pQ27-E=-aw=P=K+_w@mail.gmail.com>
Date:	Tue, 7 Aug 2012 16:35:05 +0200
From:	Geert Uytterhoeven <geert@...ux-m68k.org>
To:	Max Filippov <jcmvbkbc@...il.com>
Cc:	Chris Zankel <chris@...kel.net>, linux-kernel@...r.kernel.org,
	linux-xtensa@...ux-xtensa.org, linux-next@...r.kernel.org,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Greg KH <greg@...ah.com>,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	Marc Gauthier <marc@...silica.com>,
	Kirill Krinkin <kirill.krinkin@...il.com>
Subject: Re: xtensa port maintenance

Hi Max,

On Tue, Aug 7, 2012 at 1:56 PM, Max Filippov <jcmvbkbc@...il.com> wrote:
> On Tue, Aug 7, 2012 at 3:36 PM, Geert Uytterhoeven <geert@...ux-m68k.org> wrote:
>> On Tue, Aug 7, 2012 at 7:40 AM, Chris Zankel <chris@...kel.net> wrote:
>>> On 08/06/2012 04:38 PM, Max Filippov wrote:
>>>> AFAIK xtensa linux port is currently in bad shape: it doesn't work in the
>>>> mainline, it fails to build in the linux-next. The latest working kernels
>>>> for
>>>> xtensa are 2.6.29...31 trees hosted at the git.linux-xtensa.org.
>>>
>>> I wouldn't say it's in bad shape, I just built an vmlinux image from the
>>> latest tree (3.6.0-rc1), but it might not be very stable. One of the major
>>> issues is not really the kernel but  there's actually no way to build a
>>> fairly recent version of the toolchain. I have been using a somewhat more
>>> recent buildroot version than what is on xtensa-linux.org, but even that
>>> version of buildroot is rather old now and needed a few patches.
>>
>> Are the errors
>>
>> | dangerous relocation: l32r: literal placed after use: .literal.unlikely
>> (http://kisskb.ellerman.id.au/kisskb/buildresult/6845615/)
>>
>> preventing linking of vmlinux toolchain issues?
>
> They may be considered as such (toolchain now adds *.unlikely sections which
> was not the case previously), or may not, depending on what one would expect
> from the toolchain. I have a fix for that issue:
> https://github.com/jcmvbkbc/linux-xtensa/commit/edd7c14132388d5c09c57cf12c76c6631a1e0277

Thanks, that indeed fixes the link issue for me!

BTW, how do you export a "commitdiff" from the github web interface?

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds
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