Messages in this thread | | | Date | Fri, 07 Feb 2014 20:55:42 -0800 | From | Guenter Roeck <> | Subject | Re: Commit 597ce1723 (MIPS: Support for 64-bit FP with O32 binaries) causing qemu hang with mips64 kernels |
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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.
Thanks a lot!
Guenter
> On Sat, Feb 8, 2014 at 11:39 AM, Guenter Roeck <linux@roeck-us.net> 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 >> > >
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