From: Mark Lord <lkml@rtr.ca>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Jan Engelhardt <jengelh@linux01.gwdg.de>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: HT not active
Date: Tue, 15 Aug 2006 10:39:42 -0400 [thread overview]
Message-ID: <44E1DCAE.9020803@rtr.ca> (raw)
In-Reply-To: <1155558984.24077.191.camel@localhost.localdomain>
Alan Cox wrote:
>
> Hyperthreading must be BIOS enabled, its not something Linux can "turn
> on". The "ht" flag merely indicates that the processor supports
> hyperthreading not that it is enabled.
Not quite. Even non-HT CPUs report the ht flag (I have one here).
As somebody else said, ht just means the system supports querying
the number of ht "siblings", even though that number might be zero.
Somewhat misleading, though technically accurate.
Cheers
next prev parent reply other threads:[~2006-08-15 14:39 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-08-14 11:38 HT not active Jan Engelhardt
2006-08-14 11:46 ` Michal Piotrowski
2006-08-14 11:55 ` Jan Engelhardt
2006-08-14 12:10 ` Keith Owens
2006-08-14 16:19 ` Len Brown
2006-08-14 12:36 ` Alan Cox
2006-08-15 14:39 ` Mark Lord [this message]
2006-08-14 15:19 ` Arjan van de Ven
2006-08-14 15:23 ` Jan Engelhardt
-- strict thread matches above, loose matches on Subject: below --
2006-08-14 12:06 Mikael Pettersson
2006-08-14 12:47 ` Jan Engelhardt
[not found] <fa.YLv8m2Uw0It/GRKxQHnEfBS+Dao@ifi.uio.no>
2006-08-14 14:23 ` Robert Hancock
2006-08-14 14:51 ` linux-os (Dick Johnson)
2006-08-14 15:32 ` Lennart Sorensen
2006-08-14 16:02 ` linux-os (Dick Johnson)
2006-08-14 17:11 ` Lennart Sorensen
2006-08-14 17:51 ` Jan Engelhardt
2006-08-15 17:47 ` H. Peter Anvin
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