Subject: Re: Opteron 865 (dual-core) cpu feature B28 ?
To: Nicolas Joly <njoly@pasteur.fr>
From: Gary Duzan <gary@duzan.org>
List: port-amd64
Date: 12/07/2005 22:51:06
In Message <20051201105550.GA297182@medusa.sis.pasteur.fr> ,
   Nicolas Joly <njoly@pasteur.fr> wrote:

=>
=>Hi,
=>
=>I have some temporary access to a machine with 4 dual-core opteron 865
=>CPUs (Tyan S4882-D motherboard, 16GB, 3 70GB SCSI disks). I installed
=>-current on it (Nov 7) ... It seems to work fine, but i noticed a
=>small glitch(?) in CPU reported features. I wonder what `B28' stand
=>for ?

   Literally, "bit 28". According to the following document and
web page, bit 28 is used to indicate "Hyper-Threading Technology".

http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/24594.pdf
http://www.paradicesoftware.com/specs/cpuid/index.htm

					Gary Duzan