linux-kernel - Re: [PATCH v2 11/12] retpoline/objtool: Disable some objtool warnings

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Message-ID: <1515077175.12987.118.camel@infradead.org>
Date:   Thu, 04 Jan 2018 14:46:15 +0000
From:   David Woodhouse <dwmw2@...radead.org>
To:     Josh Poimboeuf <jpoimboe@...hat.com>,
        Andi Kleen <andi@...stfloor.org>
Cc:     tglx@...utronix.de, torvalds@...ux-foundation.org,
        gregkh@...ux-foundation.org, linux-kernel@...r.kernel.org,
        tim.c.chen@...ux.intel.com, Andi Kleen <ak@...ux.intel.com>
Subject: Re: [PATCH v2 11/12] retpoline/objtool: Disable some objtool
 warnings

On Thu, 2018-01-04 at 08:38 -0600, Josh Poimboeuf wrote:
> 
> NAK.  We can't blindly disable objtool warnings, that will break
> livepatch and the ORC unwinder.  If you share a .o file (or the GCC
> code) I can look at adding retpoline support.

http://git.infradead.org/users/dwmw2/gcc-retpoline.git/shortlog/refs/heads/gcc-7_2_0-retpoline-20171219

I put packages for Fedora 27 at ftp://ftp.infradead.org/pub/retpoline/
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