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Date: Fri, 9 Aug 2002 01:52:34 -0700
From: David Bronaugh <dbronaugh@linuxboxen.org>
To: linux-kernel@vger.kernel.org
Subject: Patch to enable K6-2 and K6-3 processor optimizations
Message-Id: <20020809015234.2010ebac.dbronaugh@linuxboxen.org>
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Hi,

Well, I said I was new to this; forgot to include the patch, and what kernel version it was against.

It's against 2.4.19, but doesn't really change much, so should apply to most kernel revisions.

Patch follows: 

diff -Naur -X dontdiff linux/arch/i386/Makefile linux-2.4/arch/i386/Makefile
--- linux/arch/i386/Makefile    2001-04-12 12:20:31.000000000 -0700
+++ linux-2.4/arch/i386/Makefile        2002-08-09 01:16:40.000000000 -0700
@@ -62,6 +62,16 @@
 CFLAGS += $(shell if $(CC) -march=k6 -S -o /dev/null -xc /dev/null >/dev/null 2>&1; then echo "-march=k6"; else echo "-march=i586"; fi)
 endif
 
+ifdef CONFIG_MK6_2
+CFLAGS += $(shell if $(CC) -march=k6-2 -S -o /dev/null -xc /dev/null >/dev/null 2>&1; then echo "-march=k6-2"; else if $(CC) -march=k6 -S -o /dev/null -xc /dev/null >/dev/null 2>&1; then echo "-march=k6"; else echo "-march=i586"; fi; fi)
+endif
+
+ifdef CONFIG_MK6_3
+CFLAGS += $(shell if $(CC) -march=k6-3 -S -o /dev/null -xc /dev/null >/dev/null 2>&1; then echo "-march=k6-3"; else if $(CC) -march=k6 -S -o /dev/null -xc /dev/null >/dev/null 2>&1; then echo "-march=k6"; else echo "-march=i586"; fi; fi)
+endif
+
+
+
 ifdef CONFIG_MK7
 CFLAGS += $(shell if $(CC) -march=athlon -S -o /dev/null -xc /dev/null >/dev/null 2>&1; then echo "-march=athlon"; else echo "-march=i686 -malign-functions=4"; fi) 
 endif
diff -Naur -X dontdiff linux/arch/i386/config.in linux-2.4/arch/i386/config.in
--- linux/arch/i386/config.in   2002-08-09 01:21:03.000000000 -0700
+++ linux-2.4/arch/i386/config.in       2002-08-09 01:11:39.000000000 -0700
@@ -35,7 +35,9 @@
         Pentium-Pro/Celeron/Pentium-II         CONFIG_M686 \
         Pentium-III/Celeron(Coppermine)        CONFIG_MPENTIUMIII \
         Pentium-4                              CONFIG_MPENTIUM4 \
-        K6/K6-II/K6-III                        CONFIG_MK6 \
+        K6                                     CONFIG_MK6 \
+        K6-II                                  CONFIG_MK6_2 \
+        K6-III                                 CONFIG_MK6_3 \
         Athlon/Duron/K7                        CONFIG_MK7 \
         Elan                                   CONFIG_MELAN \
         Crusoe                                 CONFIG_MCRUSOE \
@@ -119,6 +121,20 @@
    define_bool CONFIG_X86_TSC y
    define_bool CONFIG_X86_USE_PPRO_CHECKSUM y
 fi
+# Since I don't know whether CONFIG_X86_USE_3DNOW means 3dnowext or not, I'm playing it safe
+if [ "$CONFIG_MK6_2" = "y" ]; then
+   define_int  CONFIG_X86_L1_CACHE_SHIFT 5
+   define_bool CONFIG_X86_ALIGNMENT_16 y
+   define_bool CONFIG_X86_TSC y
+   define_bool CONFIG_X86_USE_PPRO_CHECKSUM y
+fi
+if [ "$CONFIG_MK6_3" = "y" ]; then
+   define_int  CONFIG_X86_L1_CACHE_SHIFT 5
+   define_bool CONFIG_X86_ALIGNMENT_16 y
+   define_bool CONFIG_X86_TSC y

+   define_bool CONFIG_X86_USE_PPRO_CHECKSUM y
+   define_bool CONFIG_X86_USE_3DNOW y
+fi
 if [ "$CONFIG_MK7" = "y" ]; then
    define_int  CONFIG_X86_L1_CACHE_SHIFT 6
    define_bool CONFIG_X86_TSC y