[PATCH] i386: Add support for compilation for Core2

gcc doesn't support -mtune=core2 yet, but will be soon. Use -mtune=generic or -mtune=i686
as fallback

TBD need benchmarking for INTEL_USERCOPY etc. So far I used the same defaults as MPENTIUMM

Signed-off-by: Andi Kleen <ak@suse.de>

diff --git a/arch/i386/Kconfig.cpu b/arch/i386/Kconfig.cpu
index fc4f2ab..821fd26 100644 (file)
--- a/arch/i386/Kconfig.cpu
+++ b/arch/i386/Kconfig.cpu
@@ -103,8 +103,15 @@ config MPENTIUMM
          Select this for Intel Pentium M (not Pentium-4 M)
          notebook chips.
 
+config MCORE2
+       bool "Core 2/newer Xeon"
+       help
+         Select this for Intel Core 2 and newer Core 2 Xeons (Xeon 51xx and 53xx)
+         CPUs. You can distingush newer from older Xeons by the CPU family
+         in /proc/cpuinfo. Newer ones have 6.
+
 config MPENTIUM4
-       bool "Pentium-4/Celeron(P4-based)/Pentium-4 M/Xeon"
+       bool "Pentium-4/Celeron(P4-based)/Pentium-4 M/older Xeon"
        help
          Select this for Intel Pentium 4 chips.  This includes the
          Pentium 4, P4-based Celeron and Xeon, and Pentium-4 M
@@ -229,7 +236,7 @@ config X86_L1_CACHE_SHIFT
        default "7" if MPENTIUM4 || X86_GENERIC
        default "4" if X86_ELAN || M486 || M386 || MGEODEGX1
        default "5" if MWINCHIP3D || MWINCHIP2 || MWINCHIPC6 || MCRUSOE || MEFFICEON || MCYRIXIII || MK6 || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || M586 || MVIAC3_2 || MGEODE_LX
-       default "6" if MK7 || MK8 || MPENTIUMM
+       default "6" if MK7 || MK8 || MPENTIUMM || MCORE2
 
 config RWSEM_GENERIC_SPINLOCK
        bool
@@ -287,17 +294,17 @@ config X86_ALIGNMENT_16
 
 config X86_GOOD_APIC
        bool
-       depends on MK7 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || MK8 || MEFFICEON
+       depends on MK7 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || MK8 || MEFFICEON || MCORE2
        default y
 
 config X86_INTEL_USERCOPY
        bool
-       depends on MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M586MMX || X86_GENERIC || MK8 || MK7 || MEFFICEON
+       depends on MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M586MMX || X86_GENERIC || MK8 || MK7 || MEFFICEON || MCORE2
        default y
 
 config X86_USE_PPRO_CHECKSUM
        bool
-       depends on MWINCHIP3D || MWINCHIP2 || MWINCHIPC6 || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MK8 || MVIAC3_2 || MEFFICEON || MGEODE_LX
+       depends on MWINCHIP3D || MWINCHIP2 || MWINCHIPC6 || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MK8 || MVIAC3_2 || MEFFICEON || MGEODE_LX || MCORE2
        default y
 
 config X86_USE_3DNOW
@@ -312,5 +319,5 @@ config X86_OOSTORE
 
 config X86_TSC
        bool
-       depends on (MWINCHIP3D || MWINCHIP2 || MCRUSOE || MEFFICEON || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || MK8 || MVIAC3_2 || MGEODEGX1 || MGEODE_LX) && !X86_NUMAQ
+       depends on (MWINCHIP3D || MWINCHIP2 || MCRUSOE || MEFFICEON || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || MK8 || MVIAC3_2 || MGEODEGX1 || MGEODE_LX || MCORE2) && !X86_NUMAQ
        default y

diff --git a/arch/i386/Makefile.cpu b/arch/i386/Makefile.cpu
index a11befb..a32c031 100644 (file)
--- a/arch/i386/Makefile.cpu
+++ b/arch/i386/Makefile.cpu
@@ -32,6 +32,7 @@ cflags-$(CONFIG_MWINCHIP2)    += $(call cc-option,-march=winchip2,-march=i586)
 cflags-$(CONFIG_MWINCHIP3D)    += $(call cc-option,-march=winchip2,-march=i586)
 cflags-$(CONFIG_MCYRIXIII)     += $(call cc-option,-march=c3,-march=i486) $(align)-functions=0 $(align)-jumps=0 $(align)-loops=0
 cflags-$(CONFIG_MVIAC3_2)      += $(call cc-option,-march=c3-2,-march=i686)
+cflags-$(CONFIG_MCORE2)                += -march=i686 $(call cc-option,-mtune=core2,$(call cc-option,-mtune=generic,-mtune=i686))
 
 # AMD Elan support
 cflags-$(CONFIG_X86_ELAN)      += -march=i486

diff --git a/include/asm-i386/module.h b/include/asm-i386/module.h
index 424661d..fe5ae42 100644 (file)
--- a/include/asm-i386/module.h
+++ b/include/asm-i386/module.h
@@ -20,6 +20,8 @@ struct mod_arch_specific
 #define MODULE_PROC_FAMILY "586TSC "
 #elif defined CONFIG_M586MMX
 #define MODULE_PROC_FAMILY "586MMX "
+#elif defined CONFIG_MCORE2
+#define MODULE_PROC_FAMILY "CORE2 "
 #elif defined CONFIG_M686
 #define MODULE_PROC_FAMILY "686 "
 #elif defined CONFIG_MPENTIUMII