From owner-freebsd-questions Thu Nov 11 1:27:10 1999 Delivered-To: freebsd-questions@freebsd.org Received: from mayn.de (airbus.mayn.de [194.145.150.13]) by hub.freebsd.org (Postfix) with SMTP id 5DE5F14C8E for ; Thu, 11 Nov 1999 01:27:07 -0800 (PST) (envelope-from token@wuff.mayn.de) Received: (qmail 12441 invoked from network); 11 Nov 1999 09:27:02 -0000 Received: from wuff.mayn.de (qmailr@194.145.150.17) by airbus.mayn.de with SMTP; 11 Nov 1999 09:27:02 -0000 Received: (qmail 11221 invoked by uid 603); 11 Nov 1999 09:25:57 -0000 Message-ID: <19991111102557.A10195@wuff.mayn.de> Date: Thu, 11 Nov 1999 10:25:57 +0100 From: Matthias Buelow To: freebsd-questions@freebsd.org Subject: amd k6 syscall/sysret instructions Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.93.1i Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Hi, in some idle minutes I browsed the amd k6 techdocs and found out that it's obviously offering a neat feature for optimizing system calls/returns with two instructions, SYSCALL and SYSRET (http://www.amd.com/K6/k6docs/pdf/21086.pdf). I was wondering if FreeBSD is making use of them or if they are useful beyond marketing purposes at all? mkb To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message