AMD64 vs i386/x86

Chris Jones jonesc at
Thu Feb 18 15:26:03 UTC 2010

Odd wrote:
> Chris Jones wrote:
>>> Security benefits of the 64-bit kernel? What do you get from a 64-bit 
>>> Linux kernel that you do not get on a 32-bit kernel?
>> Someone in a previous discussion posted a link to a page that discussed 
>> this, but I cannot find the link now, sorry. I'll have another look.
> Must be the NX bit you are talking about. AMD implemented it in the AMD64
> architecture first, but both Intel and AMD uses  in in their respective x86
> architectures. also, afaik. Dunno what else it could be.

Yes, that was it. I found the link.

and in particular the Non-Exec Memory section.

cheers Chris

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