From: Masahiro Yamada <yamada.masahiro@socionext.com>
To: Ingo Molnar <mingo@kernel.org>
Cc: Nadav Amit <namit@vmware.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
X86 ML <x86@kernel.org>, Ingo Molnar <mingo@redhat.com>,
Thomas Gleixner <tglx@linutronix.de>,
Sam Ravnborg <sam@ravnborg.org>,
Alok Kataria <akataria@vmware.com>,
Christopher Li <sparse@chrisli.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
"H. Peter Anvin" <hpa@zytor.com>, Jan Beulich <JBeulich@suse.com>,
Josh Poimboeuf <jpoimboe@redhat.com>,
Juergen Gross <jgross@suse.com>,
Kate Stewart <kstewart@linuxfoundation.org>,
Kees Cook <keescook@chromium.org>,
"linux-sparse@vger.kernel.org" <linux-sparse@vger.kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
Philippe Ombredanne <pombredanne@nexb.com>,
"virtualization@lists.linux-foundation.org"
<virtualization@lists.linux-foundation.org>,
Linus Torvalds <torvalds@linux-foundation.org>
Subject: Re: [kbuild ack?] Re: [PATCH v6 0/9] x86: macrofying inline asm for better compilation
Date: Wed, 18 Jul 2018 10:47:10 +0900 [thread overview]
Message-ID: <CAK7LNAQT02gDD8-1FuWd8Cv7pMTP-wg-9DNYDo4+Y3MGOxsnmg@mail.gmail.com> (raw)
In-Reply-To: <20180715215452.GA14040@gmail.com>
2018-07-16 6:54 GMT+09:00 Ingo Molnar <mingo@kernel.org>:
>
> * Nadav Amit <namit@vmware.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.
Sorry for delay.
I've issued Acked-by to 1/9 now.
Thanks.
> Thanks,
>
> Ingo
--
Best Regards
Masahiro Yamada
prev parent reply other threads:[~2018-07-18 1:48 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-22 17:22 [PATCH v6 0/9] x86: macrofying inline asm for better compilation Nadav Amit
2018-06-22 17:22 ` [PATCH v6 1/9] Makefile: Prepare for using macros for inline asm Nadav Amit
2018-07-18 1:46 ` Masahiro Yamada
2018-07-24 11:14 ` Ingo Molnar
2018-07-24 18:04 ` Nadav Amit
2018-06-22 17:22 ` [PATCH v6 2/9] x86: objtool: use asm macro for better compiler decisions Nadav Amit
2018-06-22 17:22 ` [PATCH v6 3/9] x86: refcount: prevent gcc distortions Nadav Amit
2018-06-22 17:22 ` [PATCH v6 4/9] x86: alternatives: macrofy locks for better inlining Nadav Amit
2018-06-22 17:22 ` [PATCH v6 5/9] x86: bug: prevent gcc distortions Nadav Amit
2018-06-22 17:22 ` [PATCH v6 6/9] x86: prevent inline distortion by paravirt ops Nadav Amit
2018-06-22 17:22 ` [PATCH v6 7/9] x86: extable: use macros instead of inline assembly Nadav Amit
2018-06-22 17:22 ` [PATCH v6 8/9] x86: cpufeature: " Nadav Amit
2018-06-22 17:22 ` [PATCH v6 9/9] x86: jump-labels: " Nadav Amit
2018-07-24 14:26 ` Ingo Molnar
2018-07-24 16:29 ` Nadav Amit
2018-07-24 19:49 ` Ingo Molnar
2018-07-11 1:59 ` [PATCH v6 0/9] x86: macrofying inline asm for better compilation Nadav Amit
2018-07-15 21:54 ` [kbuild ack?] " Ingo Molnar
2018-07-18 1:47 ` Masahiro Yamada [this message]
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