From: Linus Torvalds <torvalds@linux-foundation.org>
To: Ingo Molnar <mingo@kernel.org>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Josh Poimboeuf <jpoimboe@redhat.com>,
Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [GIT PULL] core kernel fixes
Date: Sun, 5 Nov 2017 10:09:59 -0800 [thread overview]
Message-ID: <CA+55aFy+w_T2RB+wO6KhT=ocwYUJvyC=zjkuoQQLfCTWmozsLg@mail.gmail.com> (raw)
In-Reply-To: <20171105143346.c6idowugfpvkhd2k@gmail.com>
On Sun, Nov 5, 2017 at 6:33 AM, Ingo Molnar <mingo@kernel.org> wrote:
>
> Please note that this pull request is RFC due to the top commit:
>
> ec1e1b610917: objtool: Prevent GCC from merging annotate_unreachable(), take 2
>
> ... which is admittedly somewhat of an ad-hoc workaround for something the
> compiler should have done - if there's another solution we can try that.
So I'm certainly ok with that workaround since apparently "asm
volatile" doesn't do it.
That said, I think that if that asm needs to not be merged, it should
_also_ be marked as "volatile" - since that's the documented bit for
"not moved significantly". Of course, then because apparently that
isn't enough, the __COUNTER__ games are ok, but might really mention
an explicit comment in the code as to why they exist. Because right
now they look just odd and nonsensical.
Linus
next prev parent reply other threads:[~2017-11-05 18:10 UTC|newest]
Thread overview: 97+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-11-05 14:33 [GIT PULL] core kernel fixes Ingo Molnar
2017-11-05 18:09 ` Linus Torvalds [this message]
2017-11-05 19:53 ` Josh Poimboeuf
2017-11-05 20:12 ` Linus Torvalds
2017-11-05 21:01 ` Josh Poimboeuf
-- strict thread matches above, loose matches on Subject: below --
2020-01-29 11:53 Ingo Molnar
2020-01-29 19:10 ` pr-tracker-bot
2019-05-18 8:51 Ingo Molnar
2019-05-19 17:45 ` pr-tracker-bot
2019-05-16 15:51 Ingo Molnar
2019-05-16 18:20 ` pr-tracker-bot
2018-07-21 11:58 Ingo Molnar
2017-12-06 22:01 Ingo Molnar
2017-07-21 10:01 Ingo Molnar
2016-10-18 10:14 Ingo Molnar
2016-07-13 10:55 Ingo Molnar
2016-04-03 10:45 Ingo Molnar
2015-02-06 18:28 Ingo Molnar
2012-10-23 10:57 Ingo Molnar
2012-08-03 16:31 Ingo Molnar
2012-08-03 16:55 ` Darren Hart
2012-08-03 17:01 ` Ingo Molnar
2012-08-03 17:24 ` Darren Hart
2012-06-15 18:45 Ingo Molnar
2012-01-26 18:05 Ingo Molnar
2011-08-04 20:45 Ingo Molnar
2011-04-02 10:21 Ingo Molnar
2011-03-25 12:52 Ingo Molnar
2011-01-21 2:11 Ingo Molnar
2011-01-15 15:15 Ingo Molnar
2010-10-05 19:12 Ingo Molnar
2010-10-05 20:15 ` Linus Torvalds
2010-10-05 21:09 ` Paul E. McKenney
2010-10-05 21:45 ` Linus Torvalds
2010-10-05 22:05 ` Paul E. McKenney
2010-10-06 2:56 ` Eric Dumazet
2010-10-06 4:59 ` Paul E. McKenney
2010-10-06 18:20 ` Ingo Molnar
2010-10-06 21:27 ` Paul E. McKenney
2010-10-07 8:11 ` Ingo Molnar
2010-10-07 17:42 ` Paul E. McKenney
2010-09-08 13:04 Ingo Molnar
2010-03-26 14:53 Ingo Molnar
2010-03-13 16:35 Ingo Molnar
2009-12-18 18:52 Ingo Molnar
2009-11-10 17:53 Ingo Molnar
2009-10-23 14:53 Ingo Molnar
2009-10-13 18:29 Ingo Molnar
2009-10-08 19:06 Ingo Molnar
2009-10-08 19:16 ` Linus Torvalds
2009-10-08 19:20 ` Ingo Molnar
2009-09-21 13:13 Ingo Molnar
2009-08-13 18:54 Ingo Molnar
2009-08-09 16:07 Ingo Molnar
2009-08-09 18:41 ` Darren Hart
2009-07-10 16:28 Ingo Molnar
2009-07-10 19:06 ` Linus Torvalds
2009-07-10 19:31 ` Ingo Molnar
2009-07-10 19:52 ` Linus Torvalds
2009-07-10 20:02 ` Ingo Molnar
2009-07-13 14:52 ` Joerg Roedel
2009-06-20 17:30 Ingo Molnar
2009-06-20 18:49 ` Linus Torvalds
2009-06-20 19:01 ` Linus Torvalds
2009-06-20 20:27 ` Ingo Molnar
2009-06-21 17:12 ` Thomas Gleixner
2009-06-21 17:37 ` Linus Torvalds
2009-06-21 17:57 ` Linus Torvalds
2009-06-21 19:26 ` Thomas Gleixner
2009-05-18 14:23 Ingo Molnar
2009-05-18 15:48 ` Linus Torvalds
2009-05-18 19:20 ` Thomas Gleixner
2009-05-19 20:52 ` Linus Torvalds
2009-05-19 21:45 ` Thomas Gleixner
2009-05-19 22:20 ` Darren Hart
2009-05-05 9:33 Ingo Molnar
2009-01-30 23:12 [git pull] " Ingo Molnar
2009-01-26 17:24 Ingo Molnar
2009-01-11 14:36 Ingo Molnar
2008-12-04 19:39 Ingo Molnar
2008-11-29 19:36 Ingo Molnar
2008-11-18 14:14 Ingo Molnar
2008-11-07 16:28 Ingo Molnar
2008-10-30 23:29 Ingo Molnar
2008-10-15 12:50 [git pull] core kernel updates for v2.6.28 Ingo Molnar
2008-10-16 22:32 ` Linus Torvalds
2008-10-17 6:23 ` [git pull] core kernel fixes Ingo Molnar
2008-08-28 11:44 Ingo Molnar
2008-08-18 18:35 Ingo Molnar
2008-07-24 15:13 Ingo Molnar
2008-06-30 15:32 Ingo Molnar
2008-06-30 17:02 ` Vegard Nossum
2008-06-30 18:20 ` Ingo Molnar
2008-06-30 18:43 ` Vegard Nossum
2008-06-30 19:46 ` Thomas Gleixner
2008-06-30 19:51 ` Vegard Nossum
2008-06-30 19:54 ` Thomas Gleixner
2008-06-23 19:45 Ingo Molnar
2008-06-19 15:16 Ingo Molnar
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