Processor family for Intel(R) Core(TM) i3 CPU M 370?

Dezfor · 06-10-2011, 02:57 AM

I compile kernel 2.6.39.1 for Ubuntu lucid and can't decide what processor family should be selected for my Intel Core i3.

Code:

$ cat /proc/cpuinfo 
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 37
model name	: Intel(R) Core(TM) i3 CPU       M 370  @ 2.40GHz
stepping	: 5
cpu MHz		: 933.000
cache size	: 3072 KB
physical id	: 0
siblings	: 4
core id		: 0
cpu cores	: 2
apicid		: 0
initial apicid	: 0
fdiv_bug	: no
hlt_bug		: no
f00f_bug	: no
coma_bug	: no
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx rdtscp lm constant_tsc arch_perfmon pebs bts xtopology nonstop_tsc aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm sse4_1 sse4_2 popcnt lahf_lm arat dts tpr_shadow vnmi flexpriority ept vpid
bogomips	: 4787.84
clflush size	: 64
cache_alignment	: 64
address sizes	: 36 bits physical, 48 bits virtual
power management:

Is it correct to select Core 2/newer Xeon?
I found this page, but still can't find the best solution for my case.

cascade9 · 06-10-2011, 03:26 AM

Seems from that page that CFLAGS is the same for iX and Core2Duo/Quads-

CHOST="x86_64-pc-linux-gnu"
CFLAGS="-march=core2 -mtune=generic -O2 -pipe"
CXXFLAGS="${CFLAGS}"

If/when there are iX specific CFLAGS you should use them, for the moment march=core2 seems to be the best you can do.

Dezfor · 06-10-2011, 03:30 AM

cascade9, thanks for reply. I'll follow your advice