On May 21, 2007, at 10:30 AM, drew einhorn wrote:
Thanks, Is there a guide somewhere on how to read the cpu info.
Not that I know of, but there's always the source:
* http://lxr.linux.no/ident?i=cpuinfo_op
* http://lxr.linux.no/source/arch/i386/kernel/cpu/proc.c#L11
* http://lxr.linux.no/source/include/asm-i386/cpufeature.h
In particular, "lm" (a.k.a. X86_FEATURE_LM) appears to indicate 64-
bit support.
I do remember seeing stuff about hyperthreading on this box.
Does hyperthreading imply 64 bit.
No.
Here's the cpu from another box that has hyperthreading, but I
was assuming it was not 64 bit. Can I run a 64-bit kernel on this
one?
processor : 0
vendor_id : GenuineIntel
cpu family : 15
model : 2
model name : Intel(R) Pentium(R) 4 CPU 3.40GHz
stepping : 5
cpu MHz : 3392.058
cache size : 2048 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 2
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe up
No. It doesn't have "lm", so it must not support 64-bit.
--
Scott Lamb <http://www.slamb.org/>
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