linux-kernel - [kbuild ack?] Re: [PATCH v6 0/9] x86: macrofying inline asm for better compilation

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Message-ID: <20180715215452.GA14040@gmail.com>
Date:   Sun, 15 Jul 2018 23:54:52 +0200
From:   Ingo Molnar <mingo@...nel.org>
To:     Nadav Amit <namit@...are.com>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        X86 ML <x86@...nel.org>, Ingo Molnar <mingo@...hat.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        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>, 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" <linux-sparse@...r.kernel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Philippe Ombredanne <pombredanne@...b.com>,
        "virtualization@...ts.linux-foundation.org" 
        <virtualization@...ts.linux-foundation.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>
Subject: [kbuild ack?] Re: [PATCH v6 0/9] x86: macrofying inline asm for
 better compilation


* Nadav Amit <namit@...are.com> wrote:

> > I ran some limited number of benchmarks, and in general the performance
> > impact is not very notable. You can still see >10 cycles shaved off some
> > syscalls that manipulate page-tables (e.g., mprotect()), in which
> > paravirt caused many functions not to be inlined. In addition this
> > patch-set can prevent issues such as [1], and improves code readability
> > and maintainability.

Ok, that's good enough as a benefit, I suppose.

> > Nadav Amit (9):
> >  Makefile: Prepare for using macros for inline asm

This non-trivial kbuild patch needs an Acked-by from Masahiro.

Thanks,

	Ingo