Re: [PATCH] objtool: Disable stack validation when CROSS_COMPILE is used

From: Stephen Rothwell
Date: Tue Mar 01 2016 - 21:27:45 EST


Hi Josh,

On Tue, 1 Mar 2016 15:54:51 -0600 Josh Poimboeuf <jpoimboe@xxxxxxxxxx> wrote:
>
> Changing it to use the host compiler would probably be an easy fix, but
> that would expose a harder bug related to endianness.

Just by luck, my PowerPC host is little endian :-)

> How about the below workaround patch to disable objtool and warn when
> CROSS_COMPILE is used? If anybody complains about lack of cross-compile
> support later, we could try to fix it then.

This seems reasonable.

> From a3c65947011a420743f308b698171c4209105d3f Mon Sep 17 00:00:00 2001
> Message-Id: <a3c65947011a420743f308b698171c4209105d3f.1456868910.git.jpoimboe@xxxxxxxxxx>
> From: Josh Poimboeuf <jpoimboe@xxxxxxxxxx>
> Date: Tue, 1 Mar 2016 13:35:51 -0600
> Subject: [PATCH] objtool: Disable stack validation when CROSS_COMPILE is used

I have applied this to the merge of the tip tree in linux-next today
and it compiles fine for me. I will continue applying it until
something better comes along or it is applied to the tip tree.

Thanks for that.
--
Cheers,
Stephen Rothwell