From owner-freebsd-hackers Mon Jan 24 10:27:47 2000 Delivered-To: freebsd-hackers@freebsd.org Received: from rover.village.org (rover.village.org [204.144.255.49]) by hub.freebsd.org (Postfix) with ESMTP id 6E36A151B5; Mon, 24 Jan 2000 10:27:37 -0800 (PST) (envelope-from imp@harmony.village.org) Received: from harmony.village.org (harmony.village.org [10.0.0.6]) by rover.village.org (8.9.3/8.9.3) with ESMTP id LAA01876; Mon, 24 Jan 2000 11:27:11 -0700 (MST) (envelope-from imp@harmony.village.org) Received: from harmony.village.org (localhost.village.org [127.0.0.1]) by harmony.village.org (8.9.3/8.8.3) with ESMTP id LAA04800; Mon, 24 Jan 2000 11:26:57 -0700 (MST) Message-Id: <200001241826.LAA04800@harmony.village.org> To: Jeroen Ruigrok/Asmodai Subject: Re: Learning the FreeBSD Kernel Cc: "Daniel C. Sobral" , Bill Maniatty , FreeBSD-doc@FreeBSD.ORG, maniatty@cs.albany.edu, freebsd-hackers@FreeBSD.ORG, Greg Lehey In-reply-to: Your message of "Mon, 24 Jan 2000 16:16:40 +0100." <20000124161640.F691@daemon.ninth-circle.org> References: <20000124161640.F691@daemon.ninth-circle.org> <200001231648.LAA53658@cs.rpi.edu> <388C0FED.706330D0@newsguy.com> Date: Mon, 24 Jan 2000 11:26:57 -0700 From: Warner Losh Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG In message <20000124161640.F691@daemon.ninth-circle.org> Jeroen Ruigrok/Asmodai writes: : >As long as a device is just inb/outb (I seem to recall newbus have a : >replacement for these) : : bus_space_read_#() / bus_space_write_#() : : Where # is 1, 2, 4, or 8. But I don't think we support atomic 8 byte : atomic reads and writes. It isn't so much that "we" don't support atomic 8 byte operations, it is that the busses and cpus don't support these operations... Warner To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message