Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752723AbaBYENj (ORCPT ); Mon, 24 Feb 2014 23:13:39 -0500 Received: from mail.active-venture.com ([67.228.131.205]:55793 "EHLO mail.active-venture.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751866AbaBYENh (ORCPT ); Mon, 24 Feb 2014 23:13:37 -0500 X-Originating-IP: 108.223.40.66 Message-ID: <530C186D.3050602@roeck-us.net> Date: Mon, 24 Feb 2014 20:13:33 -0800 From: Guenter Roeck User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.3.0 MIME-Version: 1.0 To: Huacai Chen CC: Linux MIPS Mailing List , Paul Burton , Ralf Baechle , "linux-kernel@vger.kernel.org" Subject: Re: Commit 597ce1723 (MIPS: Support for 64-bit FP with O32 binaries) causing qemu hang with mips64 kernels References: <52F5A6EE.7020000@roeck-us.net> <52F5B8CE.1000808@roeck-us.net> In-Reply-To: <52F5B8CE.1000808@roeck-us.net> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 02/07/2014 08:55 PM, Guenter Roeck wrote: > On 02/07/2014 07:57 PM, Huacai Chen wrote: >> Hi, >> >> Maybe you can try this: >> http://patchwork.linux-mips.org/patch/6506/ >> http://patchwork.linux-mips.org/patch/6507/ >> > With those two patches applied the problem is gone. > Any idea if and when those patches may find their way upstream ? 3.14-rc4 still has the problem. Thanks, Guenter > Thanks a lot! > > Guenter > >> On Sat, Feb 8, 2014 at 11:39 AM, Guenter Roeck wrote: >>> >>> Hi all, >>> >>> in 3.14-rc1, my mips64 qemu test fails. The image boots and then hangs. >>> Bisect points to commit 597ce1723 (MIPS: Support for 64-bit FP with O32 >>> binaries). >>> Reverting this commit fixes the problem. Disabling MIPS_O32_FP64_SUPPORT >>> in my test image does _not_ solve the problem. The qemu version does not >>> seem >>> to make a difference; I tested with qemu 1.6.0 and 1.7.0. >>> >>> Console log output is available in >>> http://server.roeck-us.net:8010/builders/qemu-mips64-master/builds/34/steps/buildcommand/logs/stdio >>> >>> When the problem is seen, the emulation hangs as can be seen in the log, >>> and the qemu process consumes 100% CPU until it is killed. >>> >>> qemu command line is >>> >>> qemu-system-mips64 -kernel vmlinux -M malta -hda >>> core-image-minimal-qemumips64.ext3 \ >>> -vga cirrus -usb -usbdevice wacom-tablet -no-reboot -m 128 --append >>> "root=/dev/hda \ >>> rw mem=128M console=ttyS0 console=tty" -nographic >>> >>> The same configuration works fine with earlier kernels. I'll be happy to >>> provide >>> the detailed configuration as well as the root file system for testing if >>> needed. >>> >>> Obviously I have no idea if this is a problem with the patch or with qemu. >>> If there is anything I can do to help tracking down the problem further, >>> please let me know. >>> >>> Thanks, >>> Guenter >>> >> >> > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/