From: Luca Barbieri <ldb@ldb.ods.org>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Linux-Kernel ML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] [RFC] [2.5 i386] GCC 3.1 -march support, PPRO_FENCE reduction, prefetch fixes and other CPU-related changes
Date: 04 Aug 2002 16:44:41 +0200 [thread overview]
Message-ID: <1028472281.1294.519.camel@ldb> (raw)
In-Reply-To: <1028476259.14196.31.camel@irongate.swansea.linux.org.uk>
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> PPro fence is required for uniprocessor pentium pro.
This should fix this and the CONFIG_MK6(II) issue.
diff --exclude-from=/home/ldb/src/linux-exclude -urNd a/arch/i386/Config.help b/arch/i386/Config.help
--- a/arch/i386/Config.help 2002-08-04 16:39:50.000000000 +0200
+++ b/arch/i386/Config.help 2002-08-04 16:38:53.000000000 +0200
@@ -490,7 +490,7 @@
Select this for an AMD K6 processor. Enables use of some extended
instructions, and passes appropriate optimization flags to GCC.
-CONFIG_MK6
+CONFIG_MK6II
Select this for an AMD K6-2/K6-3D or K6-3. Enables use of some
extended instructions, passes appropriate optimization flags to GCC
and enables 3DNow!
@@ -528,7 +528,7 @@
can increase performance of some operations.
CONFIG_X86_PPRO_FENCE
- Allows the kernel to run on Pentium Pro SMP systems by supporting a
+ Allows the kernel to run on Pentium Pro systems by supporting a
workaround for the store ordering bug present on them.
This slows down all processors except WinChips since they already do
out-of-order stores.
diff --exclude-from=/home/ldb/src/linux-exclude -urNd a/arch/i386/config.in b/arch/i386/config.in
--- a/arch/i386/config.in 2002-08-04 16:39:50.000000000 +0200
+++ b/arch/i386/config.in 2002-08-04 16:35:24.000000000 +0200
@@ -214,7 +214,7 @@
define_bool CONFIG_X86_F00F_BUG y
fi
if [ "$CONFIG_X86_USE_SSE_PREFETCH" != "y" -a "$CONFIG_X86_USE_3DNOW" != "y" -a "$CONFIG_X86_OOSTORE" != "y" ]; then
- dep_bool 'Support Pentium Pro SMP and slow down all processors' CONFIG_X86_PPRO_FENCE $CONFIG_SMP
+ dep_bool 'Support Pentium Pro and slow down all processors' CONFIG_X86_PPRO_FENCE
fi
bool 'Symmetric multi-processing support' CONFIG_SMP
diff --exclude-from=/home/ldb/src/linux-exclude -urNd a/include/asm-i386/bugs.h b/include/asm-i386/bugs.h
--- a/include/asm-i386/bugs.h 2002-08-04 16:39:51.000000000 +0200
+++ b/include/asm-i386/bugs.h 2002-08-04 16:40:12.000000000 +0200
@@ -199,12 +199,12 @@
panic("Kernel compiled for PMMX+, assumes a local APIC without the read-before-write bug!");
#endif
-#if !defined(CONFIG_X86_PPRO_FENCE) && defined(CONFIG_SMP)
+#if !defined(CONFIG_X86_PPRO_FENCE)
if(boot_cpu_data.x86_vendor == X86_VENDOR_INTEL
&& boot_cpu_data.x86 == 6
&& boot_cpu_data.x86_model <= 1
)
- panic("Kernel compiled without Pentium Pro SMP support!");
+ panic("Kernel compiled without Pentium Pro support!");
#endif
#if defined(CONFIG_X86_USE_3DNOW)
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next prev parent reply other threads:[~2002-08-04 14:42 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-08-04 14:27 [PATCH] [RFC] [2.5 i386] GCC 3.1 -march support, PPRO_FENCE reduction, prefetch fixes and other CPU-related changes Luca Barbieri
2002-08-04 14:36 ` Thunder from the hill
2002-08-04 15:32 ` Sebastian Droege
2002-08-04 15:43 ` Luca Barbieri
2002-08-04 15:50 ` Alan Cox
2002-08-04 14:44 ` Luca Barbieri [this message]
2002-08-04 18:59 ` J.A. Magallon
2002-08-04 20:23 ` Luca Barbieri
2002-08-04 21:51 ` Alan Cox
2002-08-04 21:54 ` Alan Cox
2002-08-04 20:43 ` Luca Barbieri
2002-08-05 0:02 ` Alan Cox
2002-08-05 8:12 ` Luca Barbieri
2002-08-05 9:49 ` Alan Cox
2002-08-05 9:31 ` Luca Barbieri
2002-08-05 11:05 ` Alan Cox
2002-08-05 9:53 ` Luca Barbieri
2002-08-05 11:26 ` Alan Cox
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