linux-kernel - Re: [PATCH v2 0/2] x86: Fix inline asm call constraints for clang

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Message-ID: <20170923130505.qmcwydhimcp35ori@gmail.com>
Date:   Sat, 23 Sep 2017 15:05:05 +0200
From:   Ingo Molnar <mingo@...nel.org>
To:     Josh Poimboeuf <jpoimboe@...hat.com>
Cc:     x86@...nel.org, linux-kernel@...r.kernel.org,
        Thomas Gleixner <tglx@...utronix.de>,
        "H. Peter Anvin" <hpa@...or.com>,
        Andy Lutomirski <luto@...nel.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Alexander Potapenko <glider@...gle.com>,
        Dmitriy Vyukov <dvyukov@...gle.com>,
        Matthias Kaehlcke <mka@...omium.org>,
        Arnd Bergmann <arnd@...db.de>,
        Peter Zijlstra <peterz@...radead.org>,
        Andrey Ryabinin <aryabinin@...tuozzo.com>,
        Miguel Bernal Marin <miguel.bernal.marin@...ux.intel.com>
Subject: Re: [PATCH v2 0/2] x86: Fix inline asm call constraints for clang


* Josh Poimboeuf <jpoimboe@...hat.com> wrote:

> On Sat, Sep 23, 2017 at 12:53:18PM +0200, Ingo Molnar wrote:
> > 
> > * Josh Poimboeuf <jpoimboe@...hat.com> wrote:
> > 
> > > Patch 1 is a bug fix for an objtool issue which was uncovered by patch 2.
> > > 
> > > Patch 2 is the last fix needed for clang to be able to compile and boot
> > > the kernel.
> > > 
> > > Josh Poimboeuf (2):
> > >   objtool: Handle another GCC stack pointer adjustment bug
> > >   x86/asm: Fix inline asm call constraints for clang
> > 
> > Have these patches been boot tested with clang?
> 
> Yes, I built and boot them using the directions at:
> 
>   https://github.com/ramosian-glider/clang-kernel-build

Great - I'll queue up these fixes in tip:x86/urgent.

Thanks,

	Ingo