Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752323AbaB1NPr (ORCPT ); Fri, 28 Feb 2014 08:15:47 -0500 Received: from mail-ee0-f51.google.com ([74.125.83.51]:61500 "EHLO mail-ee0-f51.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752207AbaB1NPn (ORCPT ); Fri, 28 Feb 2014 08:15:43 -0500 MIME-Version: 1.0 In-Reply-To: <530C186D.3050602@roeck-us.net> References: <52F5A6EE.7020000@roeck-us.net> <52F5B8CE.1000808@roeck-us.net> <530C186D.3050602@roeck-us.net> Date: Fri, 28 Feb 2014 21:15:41 +0800 Message-ID: Subject: Re: Commit 597ce1723 (MIPS: Support for 64-bit FP with O32 binaries) causing qemu hang with mips64 kernels From: Huacai Chen To: Guenter Roeck Cc: Linux MIPS Mailing List , Paul Burton , Ralf Baechle , "linux-kernel@vger.kernel.org" Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, Ralf, Could these two patches be merged in 3.14 (there is an updated version: http://patchwork.linux-mips.org/patch/6550/ and http://patchwork.linux-mips.org/patch/6551/)? And by the way, is the V19 of Loongson-3's patchset good enough to be merged in 3.15? Huacai On Tue, Feb 25, 2014 at 12:13 PM, Guenter Roeck wrote: > 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/