From owner-freebsd-arch Tue Nov 21 23:46:36 2000 Delivered-To: freebsd-arch@freebsd.org Received: from anchor-post-33.mail.demon.net (anchor-post-33.mail.demon.net [194.217.242.91]) by hub.freebsd.org (Postfix) with ESMTP id DCC2337B657; Tue, 21 Nov 2000 23:46:29 -0800 (PST) Received: from nlsys.demon.co.uk ([158.152.125.33] helo=herring.nlsystems.com) by anchor-post-33.mail.demon.net with esmtp (Exim 2.12 #1) id 13yUbr-000O0F-0X; Wed, 22 Nov 2000 07:46:28 +0000 Received: from salmon.nlsystems.com (salmon.nlsystems.com [10.0.0.3]) by herring.nlsystems.com (8.9.3/8.8.8) with ESMTP id HAA90239; Wed, 22 Nov 2000 07:49:19 GMT (envelope-from dfr@nlsystems.com) Date: Wed, 22 Nov 2000 07:47:03 +0000 (GMT) From: Doug Rabson To: John Baldwin Cc: Daniel Eischen , Jonathan Lemon , arch@freebsd.org Subject: Re: Thread-specific data and KSEs In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-arch@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Tue, 21 Nov 2000, John Baldwin wrote: > Well, %gs would cover x86 and k64. I think ia64 has several application > registers that are available for OS use and we could steal one of those. I'm > not sure about the alpha though. On ia64, we already use r13 (defined by the ABI as the 'thread pointer') to point at per-cpu locals. In user-mode, r13 should also be reserved. -- Doug Rabson Mail: dfr@nlsystems.com Phone: +44 20 8348 6160 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-arch" in the body of the message