[CentOS] Re: 32/48-bit virtual addressing in 20/32/36/52-bit physical addressing -- last addition ...

On Tue, 2005-06-28 at 22:50 -0500, Bryan J. Smith wrote:
> AMD Architecture Programmer's Manual Volume 2:  System Programming
> http://www.amd.com/us-
> en/assets/content_type/white_papers_and_tech_docs/24593.pdf
>   ...  
> [ SIDE NOTE:  A future x86-64 processor will offer a full 52-bit
> physical addressing.  For now, it's 40-bit -- i.e., the physical
> limitation of the EV6 interconnect.  ;-> ]

Before someone screams I didn't back that last part up ...

Page 31 (and countless other parts of the manual):  

  "Implementations can support fewer than 52 physical-address
   bits.  The first implementation of the x86-64 architecture, for
   example, supports 40-bit physical addressing in both long mode
   and legacy mode."


-- 
Bryan J. Smith                                     b.j.smith at ieee.org 
--------------------------------------------------------------------- 
It is mathematically impossible for someone who makes more than you
to be anything but richer than you.  Any tax rate that penalizes them
will also penalize you similarly (to those below you, and then below
them).  Linear algebra, let alone differential calculus or even ele-
mentary concepts of limits, is mutually exclusive with US journalism.
So forget even attempting to explain how tax cuts work.  ;->