From: Peter Zijlstra <a.p.zijlstra@chello.nl>
To: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Andi Kleen <andi@firstfloor.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Ingo Molnar <mingo@elte.hu>, Jack Steiner <steiner@sgi.com>,
Jan Beulich <JBeulich@novell.com>, Borislav Petkov <bp@amd64.org>,
Nick Piggin <npiggin@kernel.dk>,
"x86@kernel.org" <x86@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
Andrew Morton <akpm@linux-foundation.org>,
Ingo Molnar <mingo@redhat.com>,
tee@sgi.com, Nikanth Karthikesan <knikanth@suse.de>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"H. Peter Anvin" <hpa@zytor.com>
Subject: Re: [PATCH RFC] x86: avoid atomic operation in test_and_set_bit_lock if possible
Date: Fri, 25 Mar 2011 21:29:40 +0100 [thread overview]
Message-ID: <1301084980.2250.305.camel@laptop> (raw)
In-Reply-To: <1301045882.3268.2.camel@edumazet-laptop>
On Fri, 2011-03-25 at 10:38 +0100, Eric Dumazet wrote:
>
> BIOS : Version: I27 Release Date: 09/30/2010
>
> [ 0.021849] CPU0: Intel(R) Xeon(R) CPU E5640 @ 2.67GHz stepping 02
> [ 0.123904] Performance Events: PEBS fmt1+, Westmere events, Broken BIOS detected, using software events only.
> [ 0.124125] [Firmware Bug]: the BIOS has corrupted hw-PMU resources (MSR 38d is 330)
Do the below instructions yield a working system?:
> > On the BL460c G6/G7, one could perform the following steps:
> >
> > To configure BIOS low-latency options using RBSU
> > 1. Press F9 during POST to enter RBSU.
> > 2. Press CTRL-A to open the menu.
> > 3. Select Service Options.
> > 4. Disable either or both of the following options:
> > o Processor Power and Utilization Monitoring
> > o Memory Pre-Failure Notification
> >
> > By doing the above the BIOS should release the performance counter, and the
> > kernel's "perf" should not encounter a conflict.
> >
> > The document that you are looking for is here: (please see page 8 and later):
> > http://h20000.www2.hp.com/bc/docs/support/SupportManual/c01804533/c01804533.pdf
next prev parent reply other threads:[~2011-03-25 20:27 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-03-24 4:56 [PATCH RFC] x86: avoid atomic operation in test_and_set_bit_lock if possible Nikanth Karthikesan
2011-03-24 8:52 ` Jan Beulich
2011-03-24 8:56 ` Ingo Molnar
2011-03-24 14:52 ` Borislav Petkov
2011-03-24 16:48 ` Jan Beulich
2011-03-24 17:19 ` Ingo Molnar
2011-03-25 10:06 ` Jan Beulich
2011-03-25 11:10 ` Ingo Molnar
2011-03-25 12:04 ` Nikanth Karthikesan
2011-03-25 13:12 ` Jack Steiner
2011-03-25 16:29 ` Linus Torvalds
2011-03-25 16:47 ` Jan Beulich
2011-03-25 16:49 ` Jack Steiner
2011-03-24 17:30 ` Jack Steiner
2011-03-24 20:00 ` Ingo Molnar
2011-03-24 20:40 ` Andi Kleen
2011-03-24 20:50 ` Ingo Molnar
2011-03-24 21:37 ` Andi Kleen
2011-03-24 20:48 ` Eric Dumazet
2011-03-24 20:54 ` Ingo Molnar
2011-03-24 21:02 ` Eric Dumazet
2011-03-24 21:42 ` Andi Kleen
2011-03-24 23:26 ` Linus Torvalds
2011-03-24 23:56 ` Andi Kleen
2011-03-25 5:47 ` Eric Dumazet
2011-03-25 9:32 ` Ingo Molnar
2011-03-25 9:44 ` Eric Dumazet
2011-03-25 9:59 ` Ingo Molnar
2011-03-25 10:50 ` Borislav Petkov
2011-03-25 11:10 ` Peter Zijlstra
2011-03-25 11:11 ` Ingo Molnar
2011-03-25 16:16 ` Robert Richter
2011-03-25 17:22 ` Andi Kleen
2011-03-25 19:26 ` Ingo Molnar
2011-03-25 9:38 ` Eric Dumazet
2011-03-25 20:29 ` Peter Zijlstra [this message]
2011-03-26 8:15 ` Eric Dumazet
2011-03-26 9:44 ` Peter Zijlstra
2011-03-26 9:57 ` Ingo Molnar
2011-03-25 9:22 ` Ingo Molnar
2011-03-25 10:21 ` Peter Zijlstra
2011-03-25 16:08 ` Robert Richter
2011-03-25 19:31 ` Ingo Molnar
2011-03-25 17:15 ` Andi Kleen
2011-03-25 19:21 ` Ingo Molnar
2011-03-25 9:35 ` Ingo Molnar
2011-03-24 17:01 ` Linus Torvalds
2011-03-24 17:13 ` Jack Steiner
2011-03-24 18:38 ` Andi Kleen
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=1301084980.2250.305.camel@laptop \
--to=a.p.zijlstra@chello.nl \
--cc=JBeulich@novell.com \
--cc=akpm@linux-foundation.org \
--cc=andi@firstfloor.org \
--cc=bp@amd64.org \
--cc=eric.dumazet@gmail.com \
--cc=hpa@zytor.com \
--cc=knikanth@suse.de \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@elte.hu \
--cc=mingo@redhat.com \
--cc=npiggin@kernel.dk \
--cc=steiner@sgi.com \
--cc=tee@sgi.com \
--cc=tglx@linutronix.de \
--cc=torvalds@linux-foundation.org \
--cc=x86@kernel.org \
/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