From: Jan-Benedict Glaw <jbglaw@lug-owl.de>
To: Marcelo Tosatti <marcelo@conectiva.com.br>
Cc: lkml <linux-kernel@vger.kernel.org>
Subject: TSCs are a no-no on i386
Date: Wed, 30 Jul 2003 15:56:23 +0200 [thread overview]
Message-ID: <20030730135623.GA1873@lug-owl.de> (raw)
Hi!
This small patch fixes a long-standing problem for bare i386 CPUs. These
don't have TSCs and so, a recent 2.4.x kernel will simply halt the
machine leaving a text like "This CPU has no TSC feature (ie was
compiled for Pentium+) but I do depend on it".
Please apply. Worst to say, even Debian seems to start using i486+
features (ie. libstdc++5 is SIGILLed on Am386 because there's no
"lock" insn available)...
MfG, JBG
--- linux-2.4.22-pre9/arch/i386/config.in.orig 2003-07-30 15:00:27.000000000 +0200
+++ linux-2.4.22-pre9/arch/i386/config.in 2003-07-30 15:01:56.000000000 +0200
@@ -56,6 +56,7 @@
define_bool CONFIG_RWSEM_XCHGADD_ALGORITHM n
define_bool CONFIG_X86_PPRO_FENCE y
define_bool CONFIG_X86_F00F_WORKS_OK n
+ define_bool CONFIG_X86_HAS_TSC n
else
define_bool CONFIG_X86_WP_WORKS_OK y
define_bool CONFIG_X86_INVLPG y
--
Jan-Benedict Glaw jbglaw@lug-owl.de . +49-172-7608481
"Eine Freie Meinung in einem Freien Kopf | Gegen Zensur | Gegen Krieg
fuer einen Freien Staat voll Freier Bürger" | im Internet! | im Irak!
ret = do_actions((curr | FREE_SPEECH) & ~(IRAQ_WAR_2 | DRM | TCPA));
next reply other threads:[~2003-07-30 13:56 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-07-30 13:56 Jan-Benedict Glaw [this message]
2003-07-30 14:18 ` TSCs are a no-no on i386 Maciej W. Rozycki
2003-07-30 14:44 ` Jan-Benedict Glaw
2003-07-30 16:58 ` Matthew Garrett
2003-07-30 17:19 ` Alan Cox
2003-07-30 18:10 ` Adrian Bunk
2003-07-30 18:30 ` Mike Fedyk
2003-07-30 18:45 ` Adrian Bunk
2003-07-30 20:01 ` Alan Cox
2003-07-30 20:33 ` Jan-Benedict Glaw
2003-07-30 22:19 ` J.A. Magallon
2003-07-31 6:11 ` Jan-Benedict Glaw
2003-07-30 23:05 ` Alan Cox
2003-07-31 11:11 ` Richard B. Johnson
2003-07-31 11:26 ` Emulating i486+ insn on i386 (was: TSCs are a no-no on i386) Jan-Benedict Glaw
2003-07-31 11:41 ` TSCs are a no-no on i386 Jan-Benedict Glaw
2003-07-31 0:22 ` Adrian Bunk
2003-07-31 6:22 ` Jan-Benedict Glaw
2003-07-31 7:17 ` Willy Tarreau
2003-07-31 11:38 ` Emulating i486 on i386 (was: TSCs are a no-no on i386) Jan-Benedict Glaw
2003-07-31 11:51 ` Alan Cox
2003-07-31 12:14 ` Jan-Benedict Glaw
2003-07-31 13:01 ` Jan-Benedict Glaw
2003-07-31 15:09 ` Martin Schlemmer
2003-07-31 15:33 ` Jan-Benedict Glaw
2003-08-01 5:37 ` Martin Schlemmer
2003-07-31 15:12 ` Jamie Lokier
2003-07-31 15:32 ` Jan-Benedict Glaw
2003-07-31 15:07 ` TSCs are a no-no on i386 Jamie Lokier
2003-07-31 15:23 ` Willy Tarreau
2003-07-31 15:50 ` Richard B. Johnson
2003-07-31 16:24 ` Jan-Benedict Glaw
2003-08-06 11:08 ` Pavel Machek
2003-08-06 14:33 ` Maciej W. Rozycki
2003-07-30 20:28 ` Jan-Benedict Glaw
2003-07-30 21:50 ` Petr Vandrovec
2003-07-30 23:10 ` Alan Cox
2003-07-31 15:10 ` Jamie Lokier
2003-07-31 16:01 ` Alan Cox
2003-07-31 18:37 ` Jamie Lokier
2003-07-31 19:10 ` Alan Cox
2003-07-31 6:29 ` Jan-Benedict Glaw
2003-07-30 20:27 ` Jan-Benedict Glaw
2003-08-06 16:41 James Bottomley
2003-08-06 16:45 James Bottomley
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