From: "H. Peter Anvin" <hpa@zytor.com>
To: lkml@morethan.org
Cc: Harald Welte <HaraldWelte@viatech.com>,
Ingo Molnar <mingo@elte.hu>, Thomas Gleixner <tglx@linutronix.de>,
linux-kernel@vger.kernel.org, Alan Cox <alan@lxorguk.ukuu.org.uk>
Subject: Re: [BUG FIX] Make x86_32 uni-processor Atomic ops, Atomic
Date: Sun, 24 May 2009 11:00:04 -0700 [thread overview]
Message-ID: <4A198B24.9040404@zytor.com> (raw)
In-Reply-To: <200905240727.30677.lkml@morethan.org>
Michael S. Zick wrote:
>
> @hpa - I still like your suggestion that it is only one (or a few)
> uses of atomic ops that is incorrect and in general atomic ops
> should compile away on uni-processor.
>
Actually, the more I think about it the more I suspect there is a race
condition either in the chip set or in any VIA-specific drivers (if
there are any.) Putting LOCKs in random places will slow the CPU down
significantly, so it might resolve the race condition without actually
solving the problem.
-hpa
--
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel. I don't speak on their behalf.
next prev parent reply other threads:[~2009-05-24 18:00 UTC|newest]
Thread overview: 90+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-05-22 16:39 [BUG FIX] Make x86_32 uni-processor Atomic ops, Atomic Michael S. Zick
2009-05-22 18:23 ` Andi Kleen
2009-05-22 18:36 ` Ingo Molnar
2009-05-22 18:59 ` H. Peter Anvin
2009-05-22 19:20 ` Michael S. Zick
2009-05-22 22:21 ` Michael S. Zick
2009-05-22 23:30 ` H. Peter Anvin
2009-05-23 0:45 ` Michael S. Zick
2009-05-23 0:51 ` H. Peter Anvin
2009-05-23 10:44 ` Michael S. Zick
2009-05-23 11:18 ` Michael S. Zick
2009-05-24 7:04 ` Harald Welte
2009-05-24 12:48 ` Michael S. Zick
2009-05-24 15:43 ` Michael S. Zick
2009-05-27 22:13 ` Roland Dreier
2009-05-27 22:33 ` Michael S. Zick
2009-05-23 15:52 ` Michael S. Zick
2009-05-23 18:04 ` Michael S. Zick
2009-05-23 23:44 ` H. Peter Anvin
2009-05-24 6:49 ` Harald Welte
2009-05-24 12:38 ` Michael S. Zick
2009-05-24 17:31 ` Harald Welte
2009-05-27 12:18 ` Re:[VIA Support] was: " Michael S. Zick
2009-05-27 12:22 ` [VIA " Michael S. Zick
2009-05-27 12:47 ` Harald Welte
2009-05-27 13:00 ` Michael S. Zick
2009-05-29 12:06 ` Michael S. Zick
2009-05-30 15:48 ` Michael S. Zick
2009-05-24 12:27 ` Michael S. Zick
2009-05-24 17:22 ` Harald Welte
2009-05-24 18:00 ` H. Peter Anvin [this message]
2009-05-24 18:32 ` Michael S. Zick
2009-05-24 18:46 ` H. Peter Anvin
2009-05-24 19:09 ` Michael S. Zick
2009-05-25 19:03 ` Michael S. Zick
2009-05-25 19:18 ` Michael S. Zick
2009-05-25 19:46 ` Michael S. Zick
2009-05-25 21:10 ` Michael S. Zick
2009-05-25 21:17 ` H. Peter Anvin
2009-05-25 23:03 ` Michael S. Zick
2009-05-25 23:35 ` Michael S. Zick
2009-05-26 0:05 ` H. Peter Anvin
2009-05-26 12:37 ` Michael S. Zick
2009-05-26 17:13 ` H. Peter Anvin
2009-05-25 1:31 ` i2c-viapro / via-fb drivers on VIA CX700 Harald Welte
2009-05-25 12:54 ` Michael S. Zick
2009-05-27 13:36 ` Michael S. Zick
2009-05-25 16:05 ` [BUG FIX] Make x86_32 uni-processor Atomic ops, Atomic Michael S. Zick
2009-05-28 20:30 ` Pavel Machek
2009-05-28 20:54 ` Michael S. Zick
2009-05-28 23:15 ` [Futex RFC] was " Michael S. Zick
2009-05-29 2:00 ` Michael S. Zick
2009-05-27 17:01 ` LOCK prefix on uni processor has its use (was Re: [BUG FIX] Make x86_32 uni-processor Atomic ops, Atomic) Harald Welte
2009-05-27 17:10 ` Michael S. Zick
2009-05-27 17:19 ` Thomas Gleixner
2009-05-27 17:25 ` Michael S. Zick
2009-05-27 18:08 ` LOCK prefix on uni processor has its use Andi Kleen
2009-05-27 18:22 ` Michael S. Zick
2009-05-27 18:33 ` Michael S. Zick
2009-05-27 18:55 ` Michael S. Zick
2009-05-27 18:38 ` Andi Kleen
2009-06-02 12:48 ` Harald Welte
2009-06-02 13:03 ` Andi Kleen
2009-06-02 13:26 ` Michael S. Zick
2009-06-02 13:42 ` Andi Kleen
2009-06-03 11:46 ` Michael S. Zick
2009-05-28 2:56 ` LOCK prefix on uni processor has its use (was Re: [BUG FIX] Make x86_32 uni-processor Atomic ops, Atomic) H. Peter Anvin
2009-05-23 20:51 ` [BUG FIX] Make x86_32 uni-processor Atomic ops, Atomic Michael S. Zick
2009-05-28 12:48 ` Pavel Machek
2009-05-28 13:29 ` Michael S. Zick
2009-05-28 20:50 ` Pavel Machek
2009-05-28 20:58 ` Michael S. Zick
2009-05-28 21:16 ` Pavel Machek
2009-05-28 21:21 ` Michael S. Zick
2009-05-22 19:17 ` Michael S. Zick
[not found] ` <200905221343.30638.lkml@morethan.org>
[not found] ` <20090522192329.GF846@one.firstfloor.org>
2009-05-22 19:53 ` Michael S. Zick
2009-05-22 20:05 ` Samuel Thibault
2009-05-22 20:32 ` Michael S. Zick
2009-05-22 20:42 ` Andi Kleen
2009-05-22 20:57 ` Michael S. Zick
2009-05-22 20:43 ` Samuel Thibault
2009-05-22 21:59 ` Andi Kleen
2009-05-22 22:00 ` Samuel Thibault
2009-05-22 22:14 ` Andi Kleen
2009-05-22 22:14 ` Samuel Thibault
2009-05-22 20:45 ` Roland Dreier
2009-05-24 18:59 ` Robert Hancock
-- strict thread matches above, loose matches on Subject: below --
2009-05-22 18:50 Michael S. Zick
2009-05-22 19:24 ` Roland Dreier
2009-05-22 20:03 ` Michael S. Zick
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=4A198B24.9040404@zytor.com \
--to=hpa@zytor.com \
--cc=HaraldWelte@viatech.com \
--cc=alan@lxorguk.ukuu.org.uk \
--cc=linux-kernel@vger.kernel.org \
--cc=lkml@morethan.org \
--cc=mingo@elte.hu \
--cc=tglx@linutronix.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox