linux-kernel - Re: Runtime failure running sh:qemu in -next due to 'sh: fix copy_from

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Message-ID: <20160918151734.GA15995@brightrain.aerifal.cx>
Date:   Sun, 18 Sep 2016 11:17:34 -0400
From:   Rich Felker <dalias@...c.org>
To:     Rob Landley <rob@...dley.net>
Cc:     Guenter Roeck <linux@...ck-us.net>,
        Al Viro <viro@...IV.linux.org.uk>,
        linux-kernel@...r.kernel.org,
        Yoshinori Sato <ysato@...rs.sourceforge.jp>,
        linux-sh@...r.kernel.org
Subject: Re: Runtime failure running sh:qemu in -next due to 'sh: fix
 copy_from_user()'

On Sat, Sep 17, 2016 at 11:40:28PM -0500, Rob Landley wrote:
> 
> 
> On 09/16/2016 09:23 PM, Guenter Roeck wrote:
> > On 09/16/2016 04:32 PM, Rich Felker wrote:
> >>> 4.6.3 from kernel.org.
> >>
> >> That is utterly ancient and probaby very buggy. I would recommend 5.x+
> >> or at the very least 4.7 or 4.8.
> >>
> > Unfortunately that is the latest one available from kernel.org :-(.
> > I'll try to build one myself.
> 
> Rich, you really, really need to get an actual release version of
> https://github.com/richfelker/musl-cross-make posted.

What do you mean? Binaries? There are release tags, though it would
probably be a good time to make another one.

But this project (musl-cross-make) is not needed for building kernels
-- stock gcc, any modern-ish version, should work fine. The canonical
way (from prior to my involvement) to build sh* kernels is to use a
gcc that supports any ISA level, and this can be done without multilib
libgcc since the kernel provides its own libgcc replacement functions.

Rich