linux-kernel - Re: [PATCH v2] x86/speculation: Use DECLARE_PER_CPU for x86_spec_ctrl

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Message-ID: <20220714145652.22cf4878@kernel.org>
Date:   Thu, 14 Jul 2022 14:56:52 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     Nathan Chancellor <nathan@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Borislav Petkov <bp@...e.de>,
        "the arch/x86 maintainers" <x86@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Josh Poimboeuf <jpoimboe@...nel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        clang-built-linux <llvm@...ts.linux.dev>,
        stable <stable@...r.kernel.org>,
        kernel test robot <lkp@...el.com>
Subject: Re: [PATCH v2] x86/speculation: Use DECLARE_PER_CPU for
 x86_spec_ctrl_current

On Thu, 14 Jul 2022 14:51:52 -0700 Linus Torvalds wrote:
> On Thu, Jul 14, 2022 at 2:30 PM Jakub Kicinski <kuba@...nel.org> wrote:
> > Hi, sorry to bother, any idea on the ETA for this fix getting into
> > Linus's tree? I'm trying to figure out if we should wait with
> > forwarding the networking trees or this will take a while.  
> 
> Well, I have that patch by now in my own clang tree, but was holding
> it off just because I was expecting a few other fixes for the fallout.
> 
> But if this particular one causes problems for maintainers, I can
> easily just take it right away just cherry-pick it from my own
> test-tree to my "main" tree.

I have clang 13, let me double check this fix is enough for the build
to complete without disabling WERROR. If it's not a hassle it'd
certainly make my life easier if the fix gotten applied now...