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xen-devel
Re: [Xen-devel] understanding __linear_l2_table and friends
Gerd Knorr wrote:
On Sat, Apr 23, 2005 at 05:28:26PM +0200, Andi Kleen wrote:
If you bought them in the last year you very likely already got them 64bit
capable.
That the machines are 64bit capable doesn't mean that people will
actually run 64bit software on them. Note that the very good backward
compatibility of x86_64 machines to 32bit software is one of the key
features leading to the success of the processors (lesson learned from
ia64 ;)
What does that have to do with PAE support in Xen? x86_64 machines
do not support PAE, and do not need it to run 32-bit applications.
(A good decision by AMD, IMHO. The complexity of supporting PAE along with
all the other mode combinations would have been ridiculous.)
--
David Hopwood <david.nospam.hopwood@xxxxxxxxxxxxxxxx>
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