Difference x86 and x86_64

[Gaurav Jain]

x86 is a 32-bit Processor architecture. x86_64 is the 64-bit Processor
architecture. Software (including Linux kernel) designed for a 32-bit
processor can run on both a 64-bit as well as a 32-bit processor, however
software designed for 64-bit processor can't be executed on a 32-bit
processor.

~Gaurav


On Sun, Dec 23, 2012 at 4:58 PM, Shraddha Kamat <sh2008ka at gmail.com> wrote:

> I used x86 - bzImage to boot my machine and 'uname -a' shows this :-
>
> Linux phx4 3.7.1 #3 SMP Sun Dec 23 16:28:20 IST 2012 x86_64 x86_64
> x86_64 GNU/Linux
>
> where I see x86_64 arch (and not x86_64) ???
>
> What is the difference between arch/x86 and arch/x86_64 ?
>
>
> -- Shraddha
>
>
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-- 
Gaurav Jain
Associate Software Engineer
VxVM Escalations Team, SAMG
Symantec Software India Pvt. Ltd.
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