Thread (11 messages) 11 messages, 4 authors, 2012-08-10

Re: xtensa port maintenance

From: Max Filippov <jcmvbkbc@gmail.com>
Date: 2012-08-07 15:34:31
Also in: lkml

On Tue, Aug 7, 2012 at 6:35 PM, Geert Uytterhoeven [off-list ref] wrote:
Hi Max,

On Tue, Aug 7, 2012 at 1:56 PM, Max Filippov [off-list ref] wrote:
quoted
On Tue, Aug 7, 2012 at 3:36 PM, Geert Uytterhoeven [off-list ref] wrote:
quoted
On Tue, Aug 7, 2012 at 7:40 AM, Chris Zankel [off-list ref] wrote:
quoted
On 08/06/2012 04:38 PM, Max Filippov wrote:
quoted
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?
Not sure what you mean... You can get raw commitdiff by adding
'.patch' to the URL above:

https://github.com/jcmvbkbc/linux-xtensa/commit/edd7c14132388d5c09c57cf12c76c6631a1e0277.patch

-- 
Thanks.
-- Max
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