From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:51018) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SPuyV-0006RQ-6w for qemu-devel@nongnu.org; Thu, 03 May 2012 08:17:36 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1SPuyT-00047p-9c for qemu-devel@nongnu.org; Thu, 03 May 2012 08:17:34 -0400 Received: from goliath.siemens.de ([192.35.17.28]:34355) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SPuyS-00047N-W9 for qemu-devel@nongnu.org; Thu, 03 May 2012 08:17:33 -0400 Message-ID: <4FA27754.1070005@siemens.com> Date: Thu, 03 May 2012 09:17:24 -0300 From: Jan Kiszka MIME-Version: 1.0 References: <4FA17998.9040001@siemens.com> <1B2F3665-DC41-4553-800E-D14A0F876553@suse.de> In-Reply-To: <1B2F3665-DC41-4553-800E-D14A0F876553@suse.de> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] Sporadic AHCI boot failures List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Alexander Graf Cc: qemu-devel , Gerd Hoffmann On 2012-05-02 18:26, Alexander Graf wrote: > > > On 02.05.2012, at 20:14, Jan Kiszka wrote: > >> Hi, >> >> I'm running a Win7 VM over AHCI, rebooting quite frequently. Depending >> on host system load, I'm facing a lot of sporadic boot failures (disk >> not found), obviously in SeaBIOS. Could it be that some timeout in the >> init code bites us here? AHCI_LINK_TIMEOUT or AHCI_RESET_TIMEOUT? Just a >> guess, I haven't debugged this yet. > > Hm, I'd be surprised if that's the problem. > > Do things work again after system_reset on the monitor? Maybe the reset function is just broken and we finish some asynchronous stuff after reset? The problem both occurs after power on as well as reset. Sometimes it takes multiple system_reset calls to get the system booting. Jan -- Siemens AG, Corporate Technology, CT T DE IT 1 Corporate Competence Center Embedded Linux