Date: Wed, 25 May 2011 19:13:14 +0200 From: Patrick Lamaiziere <patfbsd@davenulle.org> To: freebsd-stable@FreeBSD.org Cc: Andriy Gapon <avg@FreeBSD.org> Subject: Re: [poll] hyperthreading_allowed, hlt_logical_cpus, mp_watchdog Message-ID: <20110525191314.62d5f7f5@davenulle.org> In-Reply-To: <4DDBB0C4.5010109@FreeBSD.org> References: <4DDBB0C4.5010109@FreeBSD.org>
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Le Tue, 24 May 2011 16:21:08 +0300, Andriy Gapon <avg@FreeBSD.org> a écrit : Hello, > I am planning on some changes in head and would like to see if people > use the following features: > - machdep.hyperthreading_allowed tunable and sysctl If I remember well, these tunables were introduced because the paper of Colin Percival about the HTT security flaw on intel processors : http://www.daemonology.net/hyperthreading-considered-harmful/ http://security.freebsd.org/advisories/FreeBSD-SA-05:09.htt.asc I guess this is still a concern?. Best regards.
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