linux-kernel - Re: Status of 'cris' architecture support in Linux kernel

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Message-Id: <201409151549.s8FFnner005703@ignucius.se.axis.com>
Date:	Mon, 15 Sep 2014 17:49:49 +0200
From:	Hans-Peter Nilsson <hans-peter.nilsson@...s.com>
To:	linux@...ck-us.net
CC:	jespern@...s.com, linux-cris-kernel@...s.com,
	linux-kernel@...r.kernel.org, grant.likely@...aro.org,
	edgar.iglesias@...il.com
Subject: Re: Status of 'cris' architecture support in Linux kernel

Following up on Jesper's reply...

> From: Jesper Nilsson <jespern@...s.com>
> Date: Mon, 15 Sep 2014 16:52:03 +0200

> > Toolchain
> > 
> > Creating a toolchain from upstream sources required a number of patches.

> > - gcc 4.7.4
> >   Requires a backport from upstream gcc to compile.
> >   Later versions of gcc (4.8.3, 4.9.1) fail with internal compiler errors
> >   even after patching.

This sounds like PR61737 (fixed; use 4.9.2 not released yet),
but of course with the above sentence serving as your complete
bug-report (or did I miss one?) that will only be a guess.

> I'm using gcc 4.7.2, but of course, that is a locally built
> version that might have patches not upstream
> (although I doubt it knowing the gcc CRIS maintainer :-)

(oops. *blush*)  The TLS stuff is unfortunately not upstreamed
at this time.  Unimportant when building the kernel, but
mentioned for completeness.  (The bad excuse is that I
originally awaited pre-v32 kernels to get the corresponding TLS
support so I wouldn't have to do ugly pre-vs.-v32 conditionals,
then the whole thing lost priority, and now I avoid adding code
I can't/won't test - the glibc end isn't upstreamed either.
Sorry.)

brgds, H-P
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