From: Matthew Garrett <mjg@redhat.com>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>, Ingo Molnar <mingo@elte.hu>,
Nick Piggin <npiggin@suse.de>,
Rusty Russell <rusty@rustcorp.com.au>,
Jeremy Fitzhardinge <jeremy@goop.org>,
Thomas Gleixner <tglx@linutronix.de>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Avi Kivity <avi@redhat.com>,
Arjan van de Ven <arjan@infradead.org>
Subject: Re: [benchmark] 1% performance overhead of paravirt_ops on native kernels
Date: Tue, 9 Jun 2009 23:48:58 +0100 [thread overview]
Message-ID: <20090609224858.GA18252@srcf.ucam.org> (raw)
In-Reply-To: <alpine.LFD.2.01.0906091106470.6847@localhost.localdomain>
On Tue, Jun 09, 2009 at 11:07:41AM -0700, Linus Torvalds wrote:
> Side note: intel is to blame too. I think several Atom versions were
> shipped with 64-bit mode disabled. So even "modern" CPU's are sometimes
> artifically crippled to just 32-bit mode.
And some people still want to run dosemu so they can drive their
godforsaken 80s era PIO driven data analyzer. It'd be nice to think that
nobody used vm86, but they always seem to pop out of the woodwork
whenever someone suggests 64-bit kernels by default.
--
Matthew Garrett | mjg59@srcf.ucam.org
next prev parent reply other threads:[~2009-06-09 22:50 UTC|newest]
Thread overview: 80+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-05-14 0:16 Performance overhead of paravirt_ops on native identified Jeremy Fitzhardinge
2009-05-14 1:10 ` H. Peter Anvin
2009-05-14 8:25 ` Peter Zijlstra
2009-05-14 14:05 ` H. Peter Anvin
2009-05-14 17:36 ` Jeremy Fitzhardinge
2009-05-14 17:50 ` H. Peter Anvin
2009-05-14 8:05 ` [Xen-devel] Performance overhead of paravirt_ops on nativeidentified Jan Beulich
2009-05-14 8:33 ` Peter Zijlstra
2009-05-14 17:45 ` Jeremy Fitzhardinge
2009-05-15 8:10 ` Jan Beulich
2009-05-15 18:50 ` Jeremy Fitzhardinge
2009-05-18 7:19 ` Jan Beulich
2009-05-20 22:42 ` Jeremy Fitzhardinge
2009-05-15 18:18 ` [tip:x86/urgent] x86: Fix performance regression caused by paravirt_ops on native kernels tip-bot for Jeremy Fitzhardinge
2009-05-21 22:42 ` Performance overhead of paravirt_ops on native identified Chuck Ebbert
2009-05-21 22:48 ` Jeremy Fitzhardinge
2009-05-21 23:10 ` H. Peter Anvin
2009-05-22 1:26 ` Xin, Xiaohui
2009-05-22 3:39 ` H. Peter Anvin
2009-05-22 4:27 ` Jeremy Fitzhardinge
2009-05-22 5:59 ` Xin, Xiaohui
2009-05-22 16:33 ` H. Peter Anvin
2009-05-22 22:44 ` Jeremy Fitzhardinge
2009-05-22 22:47 ` H. Peter Anvin
2009-05-25 9:15 ` [benchmark] 1% performance overhead of paravirt_ops on native kernels Ingo Molnar
2009-05-26 18:42 ` Jeremy Fitzhardinge
2009-05-28 6:17 ` Nick Piggin
2009-05-28 20:57 ` Jeremy Fitzhardinge
2009-05-30 10:23 ` Ingo Molnar
2009-06-02 14:18 ` Chris Mason
2009-06-02 14:49 ` Ulrich Drepper
2009-06-02 15:03 ` Chris Mason
2009-06-02 15:22 ` Ulrich Drepper
2009-06-02 16:20 ` Chris Mason
2009-06-02 18:13 ` Pekka Enberg
2009-06-02 18:06 ` Pekka Enberg
2009-06-02 18:27 ` Chris Mason
2009-06-03 6:33 ` Jeremy Fitzhardinge
2009-06-02 19:14 ` Thomas Gleixner
2009-06-02 19:51 ` Chris Mason
2009-06-03 12:38 ` Rusty Russell
2009-06-03 16:09 ` Linus Torvalds
[not found] ` <200906041554.37102.rusty@rustcorp.com.au>
2009-06-04 15:02 ` Linus Torvalds
2009-06-04 21:52 ` Dave McCracken
2009-06-05 7:31 ` Gerd Hoffmann
2009-06-05 14:31 ` Rusty Russell
2009-06-06 18:54 ` Anders K. Pedersen
2009-06-05 4:46 ` Rusty Russell
2009-06-05 14:54 ` Linus Torvalds
2009-06-07 0:53 ` Rusty Russell
2009-06-08 14:53 ` Linus Torvalds
2009-06-09 9:39 ` Nick Piggin
2009-06-09 11:17 ` Ingo Molnar
2009-06-09 12:10 ` Nick Piggin
2009-06-09 12:25 ` Ingo Molnar
2009-06-09 12:42 ` Nick Piggin
2009-06-09 12:56 ` Avi Kivity
2009-06-09 15:18 ` Linus Torvalds
2009-06-09 23:33 ` Paul Mackerras
2009-06-10 1:26 ` Ingo Molnar
2009-06-09 15:07 ` Linus Torvalds
2009-06-09 15:09 ` H. Peter Anvin
2009-06-09 18:06 ` Linus Torvalds
2009-06-09 18:07 ` Linus Torvalds
2009-06-09 22:48 ` Matthew Garrett [this message]
2009-06-09 22:54 ` H. Peter Anvin
2009-06-09 14:54 ` Linus Torvalds
2009-06-09 14:57 ` Ingo Molnar
2009-06-09 15:55 ` Avi Kivity
2009-06-09 15:38 ` Nick Piggin
2009-06-09 16:00 ` Linus Torvalds
2009-06-09 16:21 ` Nick Piggin
2009-06-09 16:26 ` Linus Torvalds
2009-06-09 16:45 ` Nick Piggin
2009-06-09 17:08 ` Linus Torvalds
2009-06-10 5:53 ` Nick Piggin
2009-06-17 9:40 ` Pavel Machek
2009-06-17 9:56 ` Nick Piggin
2009-06-10 6:29 ` Peter Zijlstra
-- strict thread matches above, loose matches on Subject: below --
2009-06-04 6:58 Rusty Russell
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