From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: "H. Peter Anvin" <hpa@zytor.com>
Cc: Pavel Machek <pavel@ucw.cz>, Matteo Croce <technoboy85@gmail.com>,
Sven-Haegar Koch <haegar@sdinet.de>, Ingo Molnar <mingo@elte.hu>,
linux-kernel@vger.kernel.org
Subject: Re: i686 quirk for AMD Geode
Date: Mon, 9 Nov 2009 00:22:32 +0000 [thread overview]
Message-ID: <20091109002232.587c569a@lxorguk.ukuu.org.uk> (raw)
In-Reply-To: <ucic9k3e5xq3s3pl2w4mae7a.1257718224112@email.android.com>
On Sun, 08 Nov 2009 14:10:24 -0800
"H. Peter Anvin" <hpa@zytor.com> wrote:
> Keep in mind that if we end up running that on code with any kind of significant fraction of CMOV it will utterly suck.
cmov is pretty useless anyway and not a good scheduling choice generally
speaking on a real CPU - so in fact gcc generates very few of them, but a
few is enough to make 686 break on C3
next prev parent reply other threads:[~2009-11-09 0:20 UTC|newest]
Thread overview: 135+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-11-08 22:10 H. Peter Anvin
2009-11-09 0:22 ` Alan Cox [this message]
-- strict thread matches above, loose matches on Subject: below --
2009-11-06 15:49 Martin Schleier
2009-11-06 15:59 ` Alan Cox
2009-11-06 16:42 ` Matteo Croce
2009-11-06 16:57 ` Martin Schleier
2009-11-06 18:22 ` Alan Cox
2009-11-06 20:06 ` Martin Schleier
[not found] ` <20091106210259.290b281a@lxorguk.ukuu.org.uk>
2009-11-06 22:33 ` Martin Schleier
2009-11-06 23:05 ` Krzysztof Halasa
2009-11-07 0:05 ` Martin Schleier
2009-11-07 10:37 ` Krzysztof Halasa
2009-11-07 11:11 ` Matteo Croce
2009-11-08 2:14 ` H. Peter Anvin
2009-11-08 16:05 ` Andres Salomon
2009-11-08 18:04 ` Matteo Croce
2009-11-08 18:46 ` Andres Salomon
2009-11-08 18:22 ` Matteo Croce
2009-11-08 18:47 ` Andres Salomon
2009-11-10 5:58 ` Willy Tarreau
2009-10-03 2:12 Matteo Croce
2009-10-03 2:34 ` H. Peter Anvin
2009-10-03 3:08 ` Matteo Croce
2009-10-03 2:35 ` H. Peter Anvin
2009-10-03 7:21 ` Ingo Molnar
2009-10-03 9:53 ` Matteo Croce
2009-10-03 14:12 ` H. Peter Anvin
2009-10-03 14:56 ` Matteo Croce
2009-11-06 14:59 ` Matteo Croce
2009-11-06 16:44 ` H. Peter Anvin
2009-11-06 22:18 ` Matteo Croce
2009-11-07 0:49 ` Alan Cox
2009-11-08 17:37 ` Pavel Machek
2009-11-08 17:40 ` Matteo Croce
2009-11-08 18:10 ` Pavel Machek
2009-11-08 18:13 ` Matteo Croce
2009-11-08 19:29 ` Sven-Haegar Koch
2009-11-08 19:36 ` Pavel Machek
2009-11-08 19:47 ` Matteo Croce
2009-11-08 19:51 ` Pavel Machek
2009-11-08 20:08 ` Alan Cox
2009-11-10 5:27 ` Willy Tarreau
2009-11-10 6:02 ` H. Peter Anvin
2009-11-10 10:41 ` Avi Kivity
2009-11-10 10:56 ` Alan Cox
2009-11-10 17:08 ` H. Peter Anvin
2009-11-10 17:24 ` Alan Cox
2009-11-10 18:49 ` H. Peter Anvin
2009-11-10 19:50 ` Avi Kivity
2009-11-10 20:01 ` H. Peter Anvin
2009-11-10 20:16 ` Willy Tarreau
2009-11-10 20:25 ` H. Peter Anvin
2009-11-10 20:34 ` Willy Tarreau
2009-11-10 20:54 ` Pavel Machek
2009-11-10 21:12 ` Willy Tarreau
2009-11-10 21:19 ` H. Peter Anvin
2009-11-10 22:06 ` Willy Tarreau
2009-11-10 22:15 ` H. Peter Anvin
2009-11-10 22:20 ` Ingo Molnar
2009-11-10 22:42 ` Willy Tarreau
2009-11-10 22:47 ` H. Peter Anvin
2009-11-11 5:52 ` Willy Tarreau
2009-11-11 6:15 ` H. Peter Anvin
2009-11-11 6:36 ` Willy Tarreau
2009-11-11 7:57 ` H. Peter Anvin
2009-11-11 9:32 ` Willy Tarreau
2009-11-12 2:23 ` Matt Thrailkill
2009-11-12 5:27 ` Willy Tarreau
2009-11-12 5:31 ` H. Peter Anvin
2009-11-12 5:40 ` Willy Tarreau
2009-11-23 19:27 ` Eric W. Biederman
2009-11-23 19:35 ` H. Peter Anvin
2009-11-23 20:03 ` Eric W. Biederman
2009-11-11 10:03 ` Alan Cox
2009-11-11 8:17 ` Pavel Machek
2009-11-10 22:21 ` Willy Tarreau
2009-11-11 10:21 ` Alan Cox
2009-11-11 10:43 ` Willy Tarreau
2009-11-11 16:15 ` H. Peter Anvin
2009-11-10 22:27 ` Lennart Sorensen
2009-11-10 22:29 ` H. Peter Anvin
2009-11-10 22:34 ` Lennart Sorensen
2009-11-10 22:38 ` H. Peter Anvin
2009-11-10 22:54 ` Lennart Sorensen
2009-11-11 8:03 ` Pavel Machek
2009-11-11 9:35 ` Willy Tarreau
2009-11-10 21:21 ` Matt Thrailkill
2009-11-10 21:26 ` H. Peter Anvin
2009-11-10 22:01 ` Matteo Croce
2009-11-10 22:10 ` Willy Tarreau
2009-11-11 10:54 ` Bernd Petrovitsch
2009-11-12 0:51 ` Daniel Pittman
2009-11-12 1:00 ` H. Peter Anvin
2009-11-10 16:29 ` H. Peter Anvin
2009-11-08 19:46 ` Matteo Croce
2009-11-08 19:50 ` Pavel Machek
2009-11-08 20:41 ` Krzysztof Halasa
2009-11-08 18:42 ` Matteo Croce
2009-11-09 20:16 ` Lennart Sorensen
2009-11-09 21:03 ` Matteo Croce
2009-11-09 21:17 ` H. Peter Anvin
2009-11-09 21:23 ` Lennart Sorensen
2009-11-12 12:18 ` Pavel Machek
2009-11-13 2:03 ` Andres Salomon
2009-11-13 10:50 ` Alan Cox
2009-11-13 16:23 ` Lennart Sorensen
2009-11-13 16:57 ` Alan Cox
2009-11-13 19:24 ` Lennart Sorensen
2009-11-13 21:21 ` Alan Cox
2009-11-16 17:50 ` Lennart Sorensen
2009-11-17 11:59 ` Alan Cox
2009-11-17 14:34 ` Lennart Sorensen
2009-11-17 16:43 ` H. Peter Anvin
2009-11-17 17:10 ` Lennart Sorensen
2009-11-17 16:48 ` Valdis.Kletnieks
2009-11-17 17:25 ` Lennart Sorensen
2009-11-17 17:33 ` H. Peter Anvin
2009-11-17 18:33 ` Lennart Sorensen
2009-11-18 20:21 ` Lennart Sorensen
2009-11-18 20:59 ` H. Peter Anvin
2009-11-18 21:11 ` Lennart Sorensen
2009-11-19 0:41 ` Lennart Sorensen
2009-11-13 5:55 ` Yuhong Bao
2009-11-13 16:24 ` Lennart Sorensen
2009-11-13 13:33 ` Pádraig Brady
2009-11-13 16:25 ` Lennart Sorensen
2009-11-08 17:35 ` Pavel Machek
2009-10-03 18:05 ` Arjan van de Ven
2009-10-03 22:04 ` Matteo Croce
2009-10-03 22:32 ` Gabor Gombas
2009-10-03 22:54 ` Matteo Croce
2009-10-04 7:29 ` Gabor Gombas
2009-10-04 2:25 ` Arjan van de Ven
2009-10-04 14:58 ` Alan Cox
2009-11-09 21:14 ` H. Peter Anvin
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