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authorAndi Kleen <ak@suse.de>2006-12-07 02:14:09 +0100
committerAndi Kleen <andi@basil.nowhere.org>2006-12-07 02:14:09 +0100
commit713819989aa4dd141a37074dbc369e7c620bc619 (patch)
tree31a9166ffb2f767fbe1b20cd294dbffe74e0d675 /arch/x86_64/Kconfig
parent8542b200cbe5609edd7aae0c304c091a1c290452 (diff)
downloadlinux-linaro-stable-713819989aa4dd141a37074dbc369e7c620bc619.tar.gz
[PATCH] x86-64: Add option to compile for Core2
Add an option to compile for Intel's Core 2 The Kconfig help is a mouthful due to the inventiveness of Intel's product naming department. Mainly for the 64bit cache line sizes because gcc doesn't support optimizing for core2 yet. However it will and then the kernel should be ready by passing the right option Also fix the old MPSC help text to confirm better to reality. Signed-off-by: Andi Kleen <ak@suse.de>
Diffstat (limited to 'arch/x86_64/Kconfig')
-rw-r--r--arch/x86_64/Kconfig27
1 files changed, 21 insertions, 6 deletions
diff --git a/arch/x86_64/Kconfig b/arch/x86_64/Kconfig
index 5cb509dbffe4..6eece27d579c 100644
--- a/arch/x86_64/Kconfig
+++ b/arch/x86_64/Kconfig
@@ -122,7 +122,7 @@ endchoice
choice
prompt "Processor family"
- default MK8
+ default GENERIC_CPU
config MK8
bool "AMD-Opteron/Athlon64"
@@ -130,16 +130,31 @@ config MK8
Optimize for AMD Opteron/Athlon64/Hammer/K8 CPUs.
config MPSC
- bool "Intel EM64T"
+ bool "Intel P4 / older Netburst based Xeon"
help
- Optimize for Intel Pentium 4 and Xeon CPUs with Intel
- Extended Memory 64 Technology(EM64T). For details see
+ Optimize for Intel Pentium 4 and older Nocona/Dempsey Xeon CPUs
+ with Intel Extended Memory 64 Technology(EM64T). For details see
<http://www.intel.com/technology/64bitextensions/>.
+ Note the the latest Xeons (Xeon 51xx and 53xx) are not based on the
+ Netburst core and shouldn't use this option. You can distingush them
+ using the cpu family field
+ in /proc/cpuinfo. Family 15 is a older Xeon, Family 6 a newer one
+ (this rule only applies to system that support EM64T)
+
+config MCORE2
+ bool "Intel Core2 / newer Xeon"
+ help
+ Optimize for Intel Core2 and newer Xeons (51xx)
+ You can distingush the newer Xeons from the older ones using
+ the cpu family field in /proc/cpuinfo. 15 is a older Xeon
+ (use CONFIG_MPSC then), 6 is a newer one. This rule only
+ applies to CPUs that support EM64T.
config GENERIC_CPU
bool "Generic-x86-64"
help
Generic x86-64 CPU.
+ Run equally well on all x86-64 CPUs.
endchoice
@@ -149,12 +164,12 @@ endchoice
config X86_L1_CACHE_BYTES
int
default "128" if GENERIC_CPU || MPSC
- default "64" if MK8
+ default "64" if MK8 || MCORE2
config X86_L1_CACHE_SHIFT
int
default "7" if GENERIC_CPU || MPSC
- default "6" if MK8
+ default "6" if MK8 || MCORE2
config X86_INTERNODE_CACHE_BYTES
int