From owner-freebsd-current@freebsd.org Mon May 23 17:51:14 2016 Return-Path: Delivered-To: freebsd-current@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id E9EDBB47595 for ; Mon, 23 May 2016 17:51:14 +0000 (UTC) (envelope-from ken@kdm.org) Received: from mailman.ysv.freebsd.org (mailman.ysv.freebsd.org [IPv6:2001:1900:2254:206a::50:5]) by mx1.freebsd.org (Postfix) with ESMTP id D4D331AC5 for ; Mon, 23 May 2016 17:51:14 +0000 (UTC) (envelope-from ken@kdm.org) Received: by mailman.ysv.freebsd.org (Postfix) id D4113B47594; Mon, 23 May 2016 17:51:14 +0000 (UTC) Delivered-To: current@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id D1732B47593 for ; Mon, 23 May 2016 17:51:14 +0000 (UTC) (envelope-from ken@kdm.org) Received: from mithlond.kdm.org (mithlond.kdm.org [96.89.93.250]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "A1-33714", Issuer "A1-33714" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 931DF1AC4 for ; Mon, 23 May 2016 17:51:14 +0000 (UTC) (envelope-from ken@kdm.org) Received: from mithlond.kdm.org (localhost [127.0.0.1]) by mithlond.kdm.org (8.15.2/8.14.9) with ESMTPS id u4NHp5Ap050201 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Mon, 23 May 2016 13:51:05 -0400 (EDT) (envelope-from ken@mithlond.kdm.org) Received: (from ken@localhost) by mithlond.kdm.org (8.15.2/8.14.9/Submit) id u4NHp5gG050200; Mon, 23 May 2016 13:51:05 -0400 (EDT) (envelope-from ken) Date: Mon, 23 May 2016 13:51:05 -0400 From: "Kenneth D. Merry" To: Gary Jennejohn Cc: current@freebsd.org Subject: Re: AHCI/ADA regression? Message-ID: <20160523175105.GA50102@mithlond.kdm.org> References: <20160521100949.6179a697@ernst.home> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20160521100949.6179a697@ernst.home> User-Agent: Mutt/1.5.23 (2014-03-12) X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.4.3 (mithlond.kdm.org [127.0.0.1]); Mon, 23 May 2016 13:51:06 -0400 (EDT) X-Spam-Status: No, score=-2.9 required=5.0 tests=ALL_TRUSTED,BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS autolearn=ham autolearn_force=no version=3.4.1 X-Spam-Checker-Version: SpamAssassin 3.4.1 (2015-04-28) on mithlond.kdm.org X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 23 May 2016 17:51:15 -0000 On Sat, May 21, 2016 at 10:09:49 +0200, Gary Jennejohn wrote: > There appears to be a regression in AHCI/ADA behavior since r300207. > > Starting a test kernel at r300293 results in extremely long timeouts > probing ahcich2 for non-existent multiplier ports. > > Here some kernel output: Is this dmesg output with or without the problem? > ahci0: > port 0xff00-0xff07,0xfe00-0xfe03,0xfd00-0xfd07,0xfc00-0xfc03, > 0xfb00-0xfb0f mem 0xfe02f000-0xfe02f3ff irq 22 at device 17.0 on pci0 > > ahci0: AHCI v1.10 with 6 3Gbps ports, Port Multiplier supported Has the controller always claimed support for Port Multipliers? > ahcich2: at channel 2 on ahci0 > > ada1 at ahcich2 bus 0 scbus2 target 0 lun 0 > > /dev/ada1p1 on /home (ufs, local, journaled soft-updates) > > An older kernel at r299170 does not exhibit this peculiar behavior and > mounts /home with no delays. Are you able to send dmesg output before and after? Ken -- Kenneth Merry ken@FreeBSD.ORG