From owner-freebsd-current Wed Jan 17 9:40:16 2001 Delivered-To: freebsd-current@freebsd.org Received: from twister.domainfactory.de (twister.domainfactory.de [212.84.255.3]) by hub.freebsd.org (Postfix) with SMTP id 7EF0B37B400 for ; Wed, 17 Jan 2001 09:39:58 -0800 (PST) Received: (qmail 24388 invoked from network); 17 Jan 2001 17:39:35 -0000 Received: from blndi4-145-253-141-213.arcor-ip.net (HELO gizmo.quizbot.org) ([145.253.141.213]) (envelope-sender ) by twister.domainfactory.de (qmail-ldap-1.03) with SMTP for ; 17 Jan 2001 17:39:35 -0000 Message-ID: <3A65D810.6304785A@gizmo.quizbot.org> Date: Wed, 17 Jan 2001 18:36:16 +0100 From: Robert Drehmel X-Mailer: Mozilla 4.08 [en] (X11; I; FreeBSD 5.0-CURRENT i386) MIME-Version: 1.0 To: John Baldwin Cc: Garrett Wollman , current@FreeBSD.org, Peter Jeremy Subject: Re: Atomic breakage? References: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG In , John Baldwin wrote: > Early Pentiums (<= P90) don't support CX8 or so I've heard, which make this > slightly more complicated, as for a pentium we would have to use a function > pointer that we setup during probe. Also, during a SMP boot we would have to > panic if CX8 wasn't enabled on all CPU's. P75 (stepping 5): cmpxchg8 was actually introduced with the Pentium processors, as Mr. Wollman already wrote. -- Robert S. F. Drehmel Real hackers run -current from punchcards. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message