From owner-freebsd-current@freebsd.org Sat May 21 08:09:53 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 E8015B40EAF for ; Sat, 21 May 2016 08:09:53 +0000 (UTC) (envelope-from gljennjohn@gmail.com) 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 C9557149A for ; Sat, 21 May 2016 08:09:53 +0000 (UTC) (envelope-from gljennjohn@gmail.com) Received: by mailman.ysv.freebsd.org (Postfix) id C4F82B40EAE; Sat, 21 May 2016 08:09:53 +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 C25CFB40EAD for ; Sat, 21 May 2016 08:09:53 +0000 (UTC) (envelope-from gljennjohn@gmail.com) Received: from mail-wm0-x22c.google.com (mail-wm0-x22c.google.com [IPv6:2a00:1450:400c:c09::22c]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 5568E1499 for ; Sat, 21 May 2016 08:09:53 +0000 (UTC) (envelope-from gljennjohn@gmail.com) Received: by mail-wm0-x22c.google.com with SMTP id v200so11352444wmv.0 for ; Sat, 21 May 2016 01:09:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=date:from:to:subject:message-id:reply-to:mime-version :content-transfer-encoding; bh=CdEp8cC0jlX+vkH6dPZzz6eYix0+O+02UbGoE+305vs=; b=bS94/cUy2beTiitMptofQaITr09WLxwRlgTb2Vwd+yiSenuhbUO2gq7//R4zN2iBgf H7smulO0vUfh0uFswZiEJT3ENOy8mFox6l6zVVtz9qyb6Zlrih5VXuyB/m72AoEDrnO7 sL55U+89B5NKBDRC3ZJcJDB518zMjDdK0xEATPkGgxf6NuuqePcqrzeO5OAA4uOzdbts LtkxAdr9WH8MmWy8PrmcdWt36daPtrCspSeVAr9z8qlyZBY8qtRf1NcTP0w35i4Ta1ws s10jNR0RSjcCE3AeBeb+O8PiAoMG68VOT2btiVdG32ESYC5YNQYoeVSKqoAyWikObwot KbfQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:date:from:to:subject:message-id:reply-to :mime-version:content-transfer-encoding; bh=CdEp8cC0jlX+vkH6dPZzz6eYix0+O+02UbGoE+305vs=; b=OWtDSF5S4wnHAHdNmoDnSHJfMNCBoRfoZPr9p6nJqvRE3TUfIfHDs+37Ze2cMULVAv 9iQAkwMgSdpsLZXdzYtXO1SpBws+pHg51/jGzr+p06E4p+EXDdf7YFk7iyAQcLU6ysmp 3BtSelOzVK9zs1aNAqXg2uFHw8i+0+BzdxbXfIaDsIN0dPtf8ruYrIBU+9dM8T/Egmmj t0wAPnmqkTndRUrFItbFF9iy+7kOzhvNg1Mi+NUoWI+cy0aAiY8DEgWpbRvbr41HmgmS waC4/5fYQq+17cv0D9PU31Z9YGbyRI/s/oD0A/BCOKlzWtN1OsYOlKVjnNswCf+4weEd s46g== X-Gm-Message-State: AOPr4FWSJi0UF2+XOTHIj1XtpA32rkbHgc0lju5Yv4lpfw2frFdUc05QK4+UNZ5kp8kWgQ== X-Received: by 10.194.223.70 with SMTP id qs6mr6883364wjc.119.1463818191288; Sat, 21 May 2016 01:09:51 -0700 (PDT) Received: from ernst.home (p578E2D3B.dip0.t-ipconnect.de. [87.142.45.59]) by smtp.gmail.com with ESMTPSA id f135sm2163982wmf.22.2016.05.21.01.09.50 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sat, 21 May 2016 01:09:50 -0700 (PDT) Date: Sat, 21 May 2016 10:09:49 +0200 From: Gary Jennejohn To: current@freebsd.org Subject: AHCI/ADA regression? Message-ID: <20160521100949.6179a697@ernst.home> Reply-To: gljennjohn@gmail.com X-Mailer: Claws Mail 3.13.2 (GTK+ 2.24.29; amd64-portbld-freebsd11.0) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit 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: Sat, 21 May 2016 08:09:54 -0000 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: 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 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. -- Gary Jennejohn