From owner-freebsd-stable@FreeBSD.ORG Sat May 3 08:18:48 2003 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id DB2AB37B401 for ; Sat, 3 May 2003 08:18:48 -0700 (PDT) Received: from flood.ping.uio.no (flood.ping.uio.no [129.240.78.31]) by mx1.FreeBSD.org (Postfix) with ESMTP id 4435243F75 for ; Sat, 3 May 2003 08:18:48 -0700 (PDT) (envelope-from des@ofug.org) Received: by flood.ping.uio.no (Postfix, from userid 2602) id 6A13D530E; Sat, 3 May 2003 17:18:45 +0200 (CEST) X-URL: http://www.ofug.org/~des/ X-Disclaimer: The views expressed in this message do not necessarily coincide with those of any organisation or company with which I am or have been affiliated. To: Steve Joynt From: Dag-Erling Smorgrav Date: Sat, 03 May 2003 17:18:45 +0200 In-Reply-To: <20030503132725.D7983@mocha.cable.nu> (Steve Joynt's message of "Sat, 3 May 2003 13:32:25 +1000 (EST)") Message-ID: User-Agent: Gnus/5.090015 (Oort Gnus v0.15) Emacs/21.3 References: <20030503132725.D7983@mocha.cable.nu> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii cc: freebsd-stable@freebsd.org Subject: Re: Hyperthreading in non-SMP systems X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 03 May 2003 15:18:49 -0000 Steve Joynt writes: > Is it possible to have Hyperthreading enabled in non-SMP systems? If you mean "non-SMP kernel", what good would it do? > According > to LINT the HTT option requires SMP and APIC_IO, but when I include both of > those in my P4 3.06GHz system it panics on startup with: > > panic: pmap_bootstrap: no local apic! > mp_lock = 0000000c; cpuid = 0; lapic.id = 00000000 Try removing APIC_IO. DES -- Dag-Erling Smorgrav - des@ofug.org