From: Ingo Molnar <mingo@kernel.org>
To: Richard Biener <rguenther@suse.de>
Cc: Kate Stewart <kstewart@linuxfoundation.org>,
Peter Zijlstra <peterz@infradead.org>,
Christopher Li <sparse@chrisli.org>,
virtualization@lists.linux-foundation.org,
Masahiro Yamada <yamada.masahiro@socionext.com>,
Nadav Amit <namit@vmware.com>, Jan Beulich <JBeulich@suse.com>,
"H. Peter Anvin" <hpa@zytor.com>, Sam Ravnborg <sam@ravnborg.org>,
Thomas Gleixner <tglx@linutronix.de>,
x86@kernel.org, linux-sparse@vger.kernel.org,
Ingo Molnar <mingo@redhat.com>,
linux-xtensa@linux-xtensa.org, Kees Cook <keescook@chromium.org>,
Segher Boessenkool <segher@kernel.crashing.org>,
Chris Zankel <chris@zankel.net>, Michael Matz <matz@suse.de>,
Borislav Petkov <bp@alien8.de>,
Josh Poimboeuf <jpoimboe@redhat.com>,
Alok Kataria <akataria@vmware.com>,
Juergen Gross <jgross@suse.com>,
gcc@gcc.gnu.org, Max Filippov <jcmvbkbc@gmail.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>lin
Subject: Re: PROPOSAL: Extend inline asm syntax with size spec
Date: Wed, 10 Oct 2018 09:22:40 +0200 [thread overview]
Message-ID: <20181010072240.GB103159@gmail.com> (raw)
In-Reply-To: <alpine.LSU.2.20.1810100909140.16707@zhemvz.fhfr.qr>
* Richard Biener <rguenther@suse.de> wrote:
> Can kernel folks give this a second and third thought please so we
> don't implement sth that in the end won't satisfy you guys?
So this basically passes '0 size' to the inliner, which should be better
than passing in the explicit size, as we'd inevitably get it wrong
in cases.
I also like 'size 0' for the reason that we tend to write assembly code
and mark it 'inline' if we really think it matters to performance,
so making it more likely to be inlined when used within another inline
function is a plus as well.
Does anyone have any concerns about this?
Thanks,
Ingo
next prev parent reply other threads:[~2018-10-10 7:22 UTC|newest]
Thread overview: 85+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-03 21:30 [PATCH v9 00/10] x86: macrofying inline asm Nadav Amit
2018-10-03 21:30 ` [PATCH v9 02/10] Makefile: Prepare for using macros for " Nadav Amit
2018-11-06 18:57 ` Logan Gunthorpe
2018-11-06 19:18 ` Nadav Amit
2018-11-06 20:01 ` Logan Gunthorpe
2018-11-07 18:01 ` Nadav Amit
2018-11-07 18:53 ` Logan Gunthorpe
2018-11-07 18:56 ` Nadav Amit
2018-11-07 21:43 ` Logan Gunthorpe
2018-11-07 21:50 ` hpa
2018-11-08 6:18 ` Nadav Amit
2018-11-08 17:14 ` Logan Gunthorpe
2018-11-08 19:54 ` Nadav Amit
2018-11-08 20:00 ` Logan Gunthorpe
2018-11-08 20:18 ` Nadav Amit
2018-11-10 22:04 ` Nadav Amit
2018-11-13 4:56 ` Logan Gunthorpe
2018-10-03 21:30 ` [PATCH v9 03/10] x86: objtool: use asm macro for better compiler decisions Nadav Amit
2018-10-07 9:18 ` PROPOSAL: Extend inline asm syntax with size spec Borislav Petkov
2018-10-07 13:22 ` Segher Boessenkool
2018-10-07 14:13 ` Borislav Petkov
2018-10-07 15:14 ` Segher Boessenkool
2018-10-08 5:58 ` Ingo Molnar
2018-10-08 5:58 ` Ingo Molnar
2018-10-08 7:53 ` Segher Boessenkool
2018-10-07 14:13 ` Borislav Petkov
2018-10-07 15:53 ` Michael Matz
2018-10-08 6:13 ` Ingo Molnar
2018-10-08 8:18 ` Segher Boessenkool
2018-10-08 7:31 ` Segher Boessenkool
2018-10-08 9:07 ` Richard Biener
2018-10-08 10:02 ` Segher Boessenkool
2018-10-09 14:53 ` Segher Boessenkool
2018-10-10 6:35 ` Ingo Molnar
2018-10-10 7:12 ` Richard Biener
2018-10-10 7:22 ` Ingo Molnar [this message]
2018-10-10 8:03 ` Segher Boessenkool
2018-10-10 8:19 ` Borislav Petkov
2018-10-10 8:19 ` Borislav Petkov
2018-10-10 8:35 ` Richard Biener
2018-10-10 18:54 ` Segher Boessenkool
2018-10-10 19:14 ` Borislav Petkov
2018-10-10 19:14 ` Borislav Petkov
2018-10-13 19:33 ` Borislav Petkov
2018-10-13 21:14 ` Alexander Monakov
2018-10-13 21:30 ` Borislav Petkov
2018-10-25 10:24 ` Borislav Petkov
2018-10-25 10:24 ` Borislav Petkov
2018-10-31 12:55 ` Peter Zijlstra
2018-10-31 13:11 ` Peter Zijlstra
2018-10-31 16:31 ` Segher Boessenkool
2018-11-01 5:20 ` Joe Perches
2018-11-01 5:20 ` Joe Perches
2018-11-01 9:01 ` Peter Zijlstra
2018-11-01 9:20 ` Joe Perches
2018-11-01 11:15 ` Peter Zijlstra
2018-11-01 9:20 ` Joe Perches
2018-12-27 4:47 ` Masahiro Yamada
2018-10-10 10:29 ` Richard Biener
2018-10-10 7:53 ` Segher Boessenkool
2018-10-10 16:31 ` Nadav Amit
2018-10-10 19:21 ` Segher Boessenkool
2018-10-11 7:04 ` Richard Biener
2018-11-29 11:46 ` Masahiro Yamada
2018-11-29 11:46 ` Masahiro Yamada
2018-11-29 12:25 ` Segher Boessenkool
2018-11-30 9:06 ` Boris Petkov
2018-11-30 13:16 ` Segher Boessenkool
2018-12-10 8:16 ` Masahiro Yamada
2018-12-10 8:16 ` Masahiro Yamada
2018-11-30 9:06 ` Boris Petkov via Virtualization
2018-11-29 13:07 ` Borislav Petkov via Virtualization
2018-11-29 13:09 ` Richard Biener
2018-11-29 13:16 ` Borislav Petkov
2018-11-29 13:24 ` Richard Biener
2018-11-29 13:16 ` Borislav Petkov via Virtualization
2018-10-08 16:24 ` David Laight
2018-10-08 16:24 ` David Laight
2018-10-07 16:09 ` Nadav Amit
2018-10-07 16:13 ` [RESEND] " Nadav Amit
2018-10-07 16:46 ` Richard Biener
2018-10-07 19:06 ` Nadav Amit
2018-10-07 19:52 ` Jeff Law
2018-10-08 7:46 ` Richard Biener
2018-10-07 9:18 ` Borislav Petkov
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