Strange SMP/HTT issue

[Stephen Montgomery-Smith]

Brooks Davis wrote:
> On Thu, May 19, 2005 at 07:39:17PM -0500, Stephen Montgomery-Smith wrote:
> 
>>I just upgraded to a very recent RELENG_5 (like 2 days ago).  I have a 
>>dual Xeon with HTT enabled.  The funny thing is that top only displays 
>>'C' as '0' or '2' suggesting that some of the 4 logical CPU's are not 
>>running.  Also, my multiply running programs only run half as fast.
>>
>>I went back to an older RELENG_5 (as of May 2), and the problem cleared 
>>itself up.
>>
>>Maybe someone has already fixed this issue.  Just thought you guys 
> 
> 
> You might want to consider subscribing to security-announce so you can
> see security advisories.  HTT has been disabled by default.  For
> details, see:
> 
> ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-05:09.htt.asc

I do feel a fool.  I had seen that advisory, but since this security 
problem did not bother me (i.e. I don't care about any local security 
breaches) I had simply ignored it.

Thanks very much.

Stephen