determining processor

[Michael Havens]

Thanks Kevin. I see in my cpuinfo flags that I support long mode too. But
why, when I tried to install that in the kernel, did it complain until I
put in the 32 bit version?

On Thu, Dec 1, 2011 at 12:52 PM, Kevin Fries <kevin at fries-biro.com> wrote:

> Michael,
>
> Linux is nothing if not a chatty beast ;-)
>
> To find out everything you every wanted to know about your CPU, you can
> look at /proc/cpuinfo.
>
> My system I am on right now is a System76 Lemur, and it runs a I3
> mobile.  If I look in that file, I will see:
>
> vendor_id       : GenuineIntel
> model name      : Intel(R) Core(TM) i3 CPU       U 330  @ 1.20GHz
> cpu MHz         : 1199.000
>
> among other things.  But the real keys to the kingdom is a field called
> FLAGS.
>
> 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 syscall nx
> rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl 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
>
> You Google those flags and you will find out EXACTLY what your CPU does
> and does not support.  So, to answer your question specifically, I look
> in the flags and see a flag "lm", which stands for "long mode" which is
> uber-geek speak for 64bit mode.
>
> And sure enough, my system is running Ubuntu 11.10 in 64 bit mode.
>
> Hope this Helps
> Kevin
>
>
>
> On Thu, 2011-12-01 at 12:38 -0700, Michael Havens wrote:
> > 1- I D/L a distribution
> > 2- because I have no RW DVDs I burn the CD version
> > 3- I install the CD version
> > 4- After running the the install there is an ICON that says 'upgrade
> > to the DVD' so I upgrade
> > 5- my system starts to panic when running off of the battery so it is
> > wisely suggested to upgrade  my kernel.  So I am doing so it asks me
> > what kernel I am running. It had been said on the list that my kernel
> > is the 64 bit kind but when I tried to upgrade to the 64bit kernel the
> > computer complained and said 'wrong architecture'.
> > 6- I installed the kernel for the i386 and have been happily running
> > it now for a couple of days
> >
> > Questions:
> > Was I supposed to do something to make it see that it is a 64?
> > Would it run if an i386 was installed on a 64?
> > Does it really matter?
> > --
> > :-)~MIKE~(-:
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>
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-- 
:-)~MIKE~(-:
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