From owner-freebsd-amd64@FreeBSD.ORG Fri Jun 23 11:05:04 2006 Return-Path: X-Original-To: freebsd-amd64@freebsd.org Delivered-To: freebsd-amd64@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 84EB416A47B for ; Fri, 23 Jun 2006 11:05:04 +0000 (UTC) (envelope-from seebs@plethora.net) Received: from herd.plethora.net (herd.plethora.net [205.166.146.1]) by mx1.FreeBSD.org (Postfix) with ESMTP id E618943D45 for ; Fri, 23 Jun 2006 11:05:03 +0000 (GMT) (envelope-from seebs@plethora.net) Received: from guild.plethora.net (guild.plethora.net [205.166.146.8]) by herd.plethora.net (Postfix) with ESMTP id 9C68631E4A for ; Fri, 23 Jun 2006 06:05:02 -0500 (CDT) Received: from guild.plethora.net (seebs@localhost) by guild.plethora.net (8.13.3/8.12.8) with ESMTP id k5NB7Ms1004172 for ; Fri, 23 Jun 2006 06:07:22 -0500 (CDT) Message-Id: <200606231107.k5NB7Ms1004172@guild.plethora.net> X-Authentication-Warning: guild.plethora.net: seebs owned process doing -bs From: seebs@plethora.net (Peter Seebach) To: freebsd-amd64@freebsd.org In-reply-to: Your message of "Fri, 23 Jun 2006 11:36:26 BST." Date: Fri, 23 Jun 2006 06:07:22 -0500 Subject: Re: SMP system not running SMP X-BeenThere: freebsd-amd64@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: Peter Seebach List-Id: Porting FreeBSD to the AMD64 platform List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 23 Jun 2006 11:05:04 -0000 In message , Pete French writes : >> We've had no problems with the H8DAE (Same board without U320) all have > ^^^^^^^^^^^^^^^^^^^^^^^^^ >Once again Adaptec SCSI is the difference. Possibly we should move this >discussion somewhere more SCSi related ? It's certainly not an amd64 >problem as I get the same issue under the i386 version (though it does appear >to be an Opteron issue!) I do have confirmation: If I remove ahd from an SMP kernel, and boot with ACPI, I get SMP. So, the SMP problem is caused by disabling ACPI, but I can't enable ACPI because it causes the machine to hang at boot. There are two possible paths to fixing this: One is to make SMP work without ACPI. Since NetBSD was booting SMP on this machine with ACPI disabled in the BIOS, I assume that's theoretically possible. The other is to figure out why the machine hangs during waiting for devices to settle with ACPI enabled. I'm not sure which list fits this best; there's not really a good list for "anything happening on an Opteron whether or not it's in amd64 mode". -s