kern/145385: [cpu] Logical processor cannot be disabled for some SMT-enabled Intel procs

[John Baldwin]

The following reply was made to PR kern/145385; it has been noted by GNATS.

From: John Baldwin <jhb at freebsd.org>
To: Garrett Cooper <yaneurabeya at gmail.com>
Cc: bug-followup at freebsd.org,
 gcooper at freebsd.org,
 jkim at freebsd.org,
 Attilio Rao <attilio at freebsd.org>
Subject: Re: kern/145385: [cpu] Logical processor cannot be disabled for some SMT-enabled Intel procs
Date: Mon, 23 Aug 2010 09:33:43 -0400

 On Sunday, August 22, 2010 4:17:37 am Garrett Cooper wrote:
 > 	The following trivial patch fixes the issue on my W3520 processor; AFAICS 
 it's what should be done after reading several of the specs because the 
 logical count that's tracked with ebx is exactly what is needed for 
 logical_cpus (it's an absolute quantity). I need to verify it with a multi-cpu 
 topology at work (the two r710s I was testing with E-series Xeons on aren't 
 available remotely right now).
 > Thanks!
 > -Garrett
 
 Jung-uk Kim and Attilio Rao have both been looking at this code recently and 
 are in a better position to review the patch in the PR.
 
 -- 
 John Baldwin