linux-kernel - Re: [PATCH v5 0/9] x86: macrofying inline asm for better compilation

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Date:   Wed, 20 Jun 2018 12:11:01 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     Nadav Amit <namit@...are.com>
Cc:     linux-kernel@...r.kernel.org, x86@...nel.org,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Sam Ravnborg <sam@...nborg.org>,
        Alok Kataria <akataria@...are.com>,
        Christopher Li <sparse@...isli.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "H. Peter Anvin" <hpa@...or.com>, Ingo Molnar <mingo@...hat.com>,
        Jan Beulich <JBeulich@...e.com>,
        Josh Poimboeuf <jpoimboe@...hat.com>,
        Juergen Gross <jgross@...e.com>,
        Kate Stewart <kstewart@...uxfoundation.org>,
        Kees Cook <keescook@...omium.org>,
        linux-sparse@...r.kernel.org,
        Philippe Ombredanne <pombredanne@...b.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        virtualization@...ts.linux-foundation.org,
        Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [PATCH v5 0/9] x86: macrofying inline asm for better compilation

On Tue, Jun 19, 2018 at 12:48:45PM -0700, Nadav Amit wrote:
> Nadav Amit (9):
>   Makefile: Prepare for using macros for inline asm
>   x86: objtool: use asm macro for better compiler decisions
>   x86: refcount: prevent gcc distortions
>   x86: alternatives: macrofy locks for better inlining
>   x86: bug: prevent gcc distortions
>   x86: prevent inline distortion by paravirt ops
>   x86: extable: use macros instead of inline assembly
>   x86: cpufeature: use macros instead of inline assembly
>   x86: jump-labels: use macros instead of inline assembly
> 
>  Makefile                               |  9 ++-
>  arch/x86/Makefile                      | 11 ++-
>  arch/x86/include/asm/alternative-asm.h | 20 ++++--
>  arch/x86/include/asm/alternative.h     | 11 +--
>  arch/x86/include/asm/asm.h             | 61 +++++++---------
>  arch/x86/include/asm/bug.h             | 98 +++++++++++++++-----------
>  arch/x86/include/asm/cpufeature.h      | 82 ++++++++++++---------
>  arch/x86/include/asm/jump_label.h      | 65 ++++++++++-------
>  arch/x86/include/asm/paravirt_types.h  | 56 +++++++--------
>  arch/x86/include/asm/refcount.h        | 74 +++++++++++--------
>  arch/x86/kernel/macros.S               | 16 +++++
>  include/asm-generic/bug.h              |  8 +--
>  include/linux/compiler.h               | 56 +++++++++++----
>  scripts/Kbuild.include                 |  4 +-
>  scripts/mod/Makefile                   |  2 +
>  15 files changed, 340 insertions(+), 233 deletions(-)
>  create mode 100644 arch/x86/kernel/macros.S

Aside from the one niggle:

Acked-by: Peter Zijlstra (Intel) <peterz@...radead.org>