From: Borislav Petkov <bp@alien8.de>
To: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Segher Boessenkool <segher@kernel.crashing.org>,
Nadav Amit <namit@vmware.com>, Ingo Molnar <mingo@redhat.com>,
"H. Peter Anvin" <hpa@zytor.com>,
rguenther@suse.de, matz@suse.de, gcc@gcc.gnu.org,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
X86 ML <x86@kernel.org>, Sam Ravnborg <sam@ravnborg.org>,
Alok Kataria <akataria@vmware.com>,
Christopher Li <sparse@chrisli.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
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,
"Peter Zijlstra (Intel)" <peterz@infradead.org>,
Philippe Ombredanne <pombredanne@nexb.com>,
Thomas Gleixner <tglx@linutronix.de>,
virtualization@lists.linux-foundation.org,
Linus Torvalds <torvalds@linux-foundation.org>,
Chris Zankel <chris@zankel.net>,
Max Filippov <jcmvbkbc@gmail.com>,
linux-xtensa@linux-xtensa.org
Subject: Re: PROPOSAL: Extend inline asm syntax with size spec
Date: Thu, 29 Nov 2018 14:07:18 +0100 [thread overview]
Message-ID: <20181129130718.GA3070@nazgul.tnic> (raw)
In-Reply-To: <CAK7LNARmrdtyE7JRAdJH_zbfvD_cej+TGLh+5KfT20o538KUcA@mail.gmail.com>
On Thu, Nov 29, 2018 at 08:46:34PM +0900, Masahiro Yamada wrote:
> But, I'd like to ask if x86 people want to keep this macros.s approach.
> Revert 77b0bf55bc675 right now
> assuming the compiler will eventually solve the issue?
Yap, considering how elegant the compiler solution is and how much
problems this macros-in-asm thing causes, I think we should patch
out the latter and wait for gcc9. I mean, the savings are not so
mind-blowing to have to deal with the fallout.
But this is just my opinion.
Thx.
--
Regards/Gruss,
Boris.
ECO tip #101: Trim your mails when you reply.
--
WARNING: multiple messages have this Message-ID (diff)
From: Borislav Petkov via Virtualization <virtualization@lists.linux-foundation.org>
To: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Kate Stewart <kstewart@linuxfoundation.org>,
"Peter Zijlstra (Intel)" <peterz@infradead.org>,
Christopher Li <sparse@chrisli.org>,
virtualization@lists.linux-foundation.org,
Max Filippov <jcmvbkbc@gmail.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 ML <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>,
matz@suse.de, Josh Poimboeuf <jpoimboe@redhat.com>,
Alok Kataria <akataria@vmware.com>,
Juergen Gross <jgross@suse.com>,
gcc@gcc.gnu.org, rguenther@suse.de,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>P
Subject: Re: PROPOSAL: Extend inline asm syntax with size spec
Date: Thu, 29 Nov 2018 14:07:18 +0100 [thread overview]
Message-ID: <20181129130718.GA3070@nazgul.tnic> (raw)
In-Reply-To: <CAK7LNARmrdtyE7JRAdJH_zbfvD_cej+TGLh+5KfT20o538KUcA@mail.gmail.com>
On Thu, Nov 29, 2018 at 08:46:34PM +0900, Masahiro Yamada wrote:
> But, I'd like to ask if x86 people want to keep this macros.s approach.
> Revert 77b0bf55bc675 right now
> assuming the compiler will eventually solve the issue?
Yap, considering how elegant the compiler solution is and how much
problems this macros-in-asm thing causes, I think we should patch
out the latter and wait for gcc9. I mean, the savings are not so
mind-blowing to have to deal with the fallout.
But this is just my opinion.
Thx.
--
Regards/Gruss,
Boris.
ECO tip #101: Trim your mails when you reply.
--
next prev parent reply other threads:[~2018-11-29 13:07 UTC|newest]
Thread overview: 186+ 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 ` Nadav Amit
2018-10-03 21:30 ` [PATCH v9 01/10] xtensa: defining LINKER_SCRIPT for the linker script Nadav Amit
2018-10-04 10:00 ` [tip:x86/build] kbuild/arch/xtensa: Define " tip-bot for Nadav Amit
2018-10-03 21:30 ` [PATCH v9 02/10] Makefile: Prepare for using macros for inline asm Nadav Amit
2018-10-03 21:30 ` Nadav Amit
2018-10-04 10:01 ` [tip:x86/build] kbuild/Makefile: Prepare for using macros in inline assembly code to work around asm() related GCC inlining bugs tip-bot for Nadav Amit
2018-11-06 18:57 ` [PATCH v9 02/10] Makefile: Prepare for using macros for inline asm 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
2018-10-03 21:30 ` Nadav Amit
2018-10-04 10:02 ` [tip:x86/build] x86/objtool: Use asm macros to work around GCC inlining bugs tip-bot for Nadav Amit
2018-10-03 21:30 ` [PATCH v9 04/10] x86: refcount: prevent gcc distortions Nadav Amit
2018-10-04 7:57 ` Ingo Molnar
2018-10-04 8:33 ` Ingo Molnar
2018-10-04 8:40 ` hpa
2018-10-04 8:56 ` Ingo Molnar
2018-10-04 8:56 ` Nadav Amit
2018-10-04 9:02 ` hpa
2018-10-04 9:16 ` Ingo Molnar
2018-10-04 19:33 ` H. Peter Anvin
2018-10-04 20:05 ` Nadav Amit
2018-10-04 20:08 ` H. Peter Anvin
2018-10-04 20:29 ` Andy Lutomirski
2018-10-04 23:11 ` H. Peter Anvin
2018-10-06 1:40 ` Rasmus Villemoes
2018-10-04 9:12 ` Ingo Molnar
2018-10-04 9:17 ` hpa
2018-10-04 9:30 ` Nadav Amit
2018-10-04 9:45 ` Ingo Molnar
2018-10-04 10:23 ` Nadav Amit
2018-10-05 9:31 ` Ingo Molnar
2018-10-05 11:20 ` Borislav Petkov
2018-10-05 12:52 ` Ingo Molnar
2018-10-05 20:27 ` [PATCH 0/3] Macrofying inline asm rebased Nadav Amit
2018-10-05 20:27 ` [PATCH 1/3] x86/extable: Macrofy inline assembly code to work around GCC inlining bugs Nadav Amit
2018-10-06 14:42 ` [tip:x86/build] " tip-bot for Nadav Amit
2018-10-05 20:27 ` [PATCH 2/3] x86/cpufeature: " Nadav Amit
2018-10-06 14:43 ` [tip:x86/build] " tip-bot for Nadav Amit
2018-10-05 20:27 ` [PATCH 3/3] x86/jump-labels: " Nadav Amit
2018-10-06 14:44 ` [tip:x86/build] " tip-bot for Nadav Amit
2018-10-08 2:17 ` [PATCH v9 04/10] x86: refcount: prevent gcc distortions Nadav Amit
2018-10-04 8:40 ` Nadav Amit
2018-10-04 9:01 ` Ingo Molnar
2018-10-04 10:02 ` [tip:x86/build] x86/refcount: Work around GCC inlining bug tip-bot for Nadav Amit
2018-10-03 21:30 ` [PATCH v9 05/10] x86: alternatives: macrofy locks for better inlining Nadav Amit
2018-10-04 10:03 ` [tip:x86/build] x86/alternatives: Macrofy lock prefixes to work around GCC inlining bugs tip-bot for Nadav Amit
2018-10-03 21:30 ` [PATCH v9 06/10] x86: bug: prevent gcc distortions Nadav Amit
2018-10-04 10:03 ` [tip:x86/build] x86/bug: Macrofy the BUG table section handling, to work around GCC inlining bugs tip-bot for Nadav Amit
2018-10-03 21:30 ` [PATCH v9 07/10] x86: prevent inline distortion by paravirt ops Nadav Amit
2018-10-04 10:04 ` [tip:x86/build] x86/paravirt: Work around GCC inlining bugs when compiling " tip-bot for Nadav Amit
2018-10-03 21:30 ` [PATCH v9 08/10] x86: extable: use macros instead of inline assembly Nadav Amit
2018-10-03 21:30 ` [PATCH v9 09/10] x86: cpufeature: " Nadav Amit
2018-10-03 21:31 ` [PATCH v9 10/10] x86: jump-labels: " Nadav Amit
2018-10-07 9:18 ` PROPOSAL: Extend inline asm syntax with size spec Borislav Petkov
2018-10-07 9:18 ` Borislav Petkov
2018-10-07 9:18 ` Borislav Petkov
2018-10-07 13:22 ` Segher Boessenkool
2018-10-07 14:13 ` Borislav Petkov
2018-10-07 14:13 ` Borislav Petkov
2018-10-07 15:14 ` Segher Boessenkool
2018-10-07 15:14 ` Segher Boessenkool
2018-10-08 5:58 ` Ingo Molnar
2018-10-08 5:58 ` Ingo Molnar
2018-10-08 5:58 ` Ingo Molnar
2018-10-08 7:53 ` Segher Boessenkool
2018-10-08 7:53 ` Segher Boessenkool
2018-10-07 14:13 ` Borislav Petkov
2018-10-07 15:53 ` Michael Matz
2018-10-07 15:53 ` Michael Matz
2018-10-08 6:13 ` Ingo Molnar
2018-10-08 6:13 ` Ingo Molnar
2018-10-08 8:18 ` Segher Boessenkool
2018-10-08 8:18 ` Segher Boessenkool
2018-10-08 7:31 ` Segher Boessenkool
2018-10-08 7:31 ` Segher Boessenkool
2018-10-08 9:07 ` Richard Biener
2018-10-08 9:07 ` Richard Biener
2018-10-08 10:02 ` Segher Boessenkool
2018-10-08 10:02 ` Segher Boessenkool
2018-10-09 14:53 ` Segher Boessenkool
2018-10-09 14:53 ` Segher Boessenkool
2018-10-10 6:35 ` Ingo Molnar
2018-10-10 6:35 ` Ingo Molnar
2018-10-10 7:12 ` Richard Biener
2018-10-10 7:12 ` Richard Biener
2018-10-10 7:22 ` Ingo Molnar
2018-10-10 7:22 ` Ingo Molnar
2018-10-10 8:03 ` Segher Boessenkool
2018-10-10 8:03 ` Segher Boessenkool
2018-10-10 8:19 ` Borislav Petkov
2018-10-10 8:19 ` Borislav Petkov
2018-10-10 8:19 ` Borislav Petkov
2018-10-10 8:35 ` Richard Biener
2018-10-10 8:35 ` Richard Biener
2018-10-10 18:54 ` Segher Boessenkool
2018-10-10 18:54 ` Segher Boessenkool
2018-10-10 19:14 ` Borislav Petkov
2018-10-10 19:14 ` Borislav Petkov
2018-10-10 19:14 ` Borislav Petkov
2018-10-13 19:33 ` Borislav Petkov
2018-10-13 19:33 ` Borislav Petkov
2018-10-13 21:14 ` Alexander Monakov
2018-10-13 21:14 ` Alexander Monakov
2018-10-13 21:30 ` Borislav Petkov
2018-10-13 21:30 ` Borislav Petkov
2018-10-25 10:24 ` 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 12:55 ` Peter Zijlstra
2018-10-31 13:11 ` Peter Zijlstra
2018-10-31 13:11 ` Peter Zijlstra
2018-10-31 16:31 ` Segher Boessenkool
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 9:01 ` Peter Zijlstra
2018-11-01 9:20 ` Joe Perches
2018-11-01 9:20 ` Joe Perches
2018-11-01 11:15 ` Peter Zijlstra
2018-11-01 11:15 ` Peter Zijlstra
2018-11-01 9:20 ` Joe Perches
2018-11-01 5:20 ` Joe Perches
2018-12-27 4:47 ` Masahiro Yamada
2018-12-27 4:47 ` Masahiro Yamada
2018-10-10 10:29 ` Richard Biener
2018-10-10 10:29 ` Richard Biener
2018-10-10 7:53 ` Segher Boessenkool
2018-10-10 7:53 ` Segher Boessenkool
2018-10-10 16:31 ` Nadav Amit
2018-10-10 16:31 ` Nadav Amit
2018-10-10 19:21 ` Segher Boessenkool
2018-10-10 19:21 ` Segher Boessenkool
2018-10-11 7:04 ` Richard Biener
2018-10-11 7:04 ` Richard Biener
2018-11-29 11:46 ` Masahiro Yamada
2018-11-29 11:46 ` Masahiro Yamada
2018-11-29 11:46 ` Masahiro Yamada
2018-11-29 12:25 ` Segher Boessenkool
2018-11-29 12:25 ` Segher Boessenkool
2018-11-30 9:06 ` Boris Petkov via Virtualization
2018-11-30 9:06 ` Boris Petkov
2018-11-30 9:06 ` Boris Petkov
2018-11-30 13:16 ` Segher Boessenkool
2018-11-30 13:16 ` Segher Boessenkool
2018-12-10 8:16 ` Masahiro Yamada
2018-12-10 8:16 ` Masahiro Yamada
2018-12-10 8:16 ` Masahiro Yamada
2018-11-29 13:07 ` Borislav Petkov [this message]
2018-11-29 13:07 ` Borislav Petkov via Virtualization
2018-11-29 13:09 ` Richard Biener
2018-11-29 13:09 ` Richard Biener
2018-11-29 13:16 ` Borislav Petkov via Virtualization
2018-11-29 13:16 ` Borislav Petkov
2018-11-29 13:16 ` Borislav Petkov
2018-11-29 13:24 ` Richard Biener
2018-11-29 13:24 ` Richard Biener
2018-10-08 16:24 ` David Laight
2018-10-08 16:24 ` David Laight
2018-10-08 16:24 ` David Laight
2018-10-07 16:09 ` Nadav Amit
2018-10-07 16:09 ` Nadav Amit
2018-10-07 16:13 ` [RESEND] " Nadav Amit
2018-10-07 16:46 ` Richard Biener
2018-10-07 16:46 ` Richard Biener
2018-10-07 19:06 ` Nadav Amit
2018-10-07 19:06 ` Nadav Amit
2018-10-07 19:52 ` Jeff Law
2018-10-07 19:52 ` Jeff Law
2018-10-08 7:46 ` Richard Biener
2018-10-08 7:46 ` Richard Biener
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