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Re: [Qemu-devel] [TestDays] s390x emulation error
From: |
Andreas Färber |
Subject: |
Re: [Qemu-devel] [TestDays] s390x emulation error |
Date: |
Mon, 14 Nov 2011 18:29:11 +0100 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:7.0.1) Gecko/20110929 Thunderbird/7.0.1 |
Am 10.11.2011 13:36, schrieb Alexander Graf:
>
> On 10.11.2011, at 12:29, Andreas Färber <address@hidden> wrote:
>
>> Am 10.11.2011 11:32, schrieb Alexander Graf:
>>>
>>> On 10.11.2011, at 10:53, Andreas Färber <address@hidden> wrote:
>>>
>>>> Is there a known issue with running multiple instances of
>>>> qemu-system-s390x? I got a hang on openSUSE 12.1 RC2 x86_64 host:
>>>>
>>>> 0x00007f0de7f698d4 in __lll_lock_wait () from /lib64/libpthread.so.0
>>>> (gdb) bt
>>>> #0 0x00007f0de7f698d4 in __lll_lock_wait () from /lib64/libpthread.so.0
>>>> #1 0x00007f0de7f651c5 in _L_lock_883 () from /lib64/libpthread.so.0
>>>> #2 0x00007f0de7f6501a in pthread_mutex_lock () from /lib64/libpthread.so.0
>>>> #3 0x000000000048b4a9 in qemu_mutex_lock (mutex=<optimized out>)
>>>> at /home/andreas/QEMU/qemu/qemu-thread-posix.c:54
>>>> #4 0x00000000004cd3df in qemu_mutex_lock_iothread ()
>>>> at /home/andreas/QEMU/qemu/cpus.c:843
>>>> #5 0x0000000000467580 in main_loop_wait (nonblocking=<optimized out>)
>>>> at /home/andreas/QEMU/qemu/main-loop.c:459
>>>> #6 0x0000000000408984 in main_loop () at /home/andreas/QEMU/qemu/vl.c:1481
>>>> #7 main (argc=<optimized out>, argv=<optimized out>, envp=<optimized out>)
>>>> at /home/andreas/QEMU/qemu/vl.c:3474
>>>>
>>>> Key presses didn't work, SDL window doesn't close, at 99.9% CPU.
>>>
>>> Huh? This is all generic code O_o. And no, it's not a known issue.
>>
>> Hm, reproducable by running
>>
>> $ s390x-softmmu/qemu-system-s390x
>>
>> (without arguments) on s390-next branch.
>>
>> I get compat_monitor0 console, but monitor or switching to real console
>> don't work and neither does closing. Same backtrace.
>>
>> Doesn't happen with ppc-softmmu/qemu-system-ppc or x86_64. Maybe an
>> issue with the monitor, only apparent when then monitor is shown at
>> startup rather than later user-invoked? Any suggestions?
>
> Maybe the guest is executing an endless loop? Could you try to compile this
> asm blob for ppc and execute it with -kernel?
>
> Test.S:
>
> _start:
> b .
>
>
> Compile with gcc test.S -nostdlib
Nope, doesn't hang.
Andreas
--
SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg, Germany
GF: Jeff Hawn, Jennifer Guild, Felix Imendörffer; HRB 16746 AG Nürnberg
- Re: [Qemu-devel] [TestDays] s390x emulation error, (continued)
Re: [Qemu-devel] [TestDays] s390x emulation error, Andreas Färber, 2011/11/10
- Re: [Qemu-devel] [TestDays] s390x emulation error, Andreas Färber, 2011/11/10
- Re: [Qemu-devel] [TestDays] s390x emulation error, Alexander Graf, 2011/11/10
- Re: [Qemu-devel] [TestDays] s390x emulation error, Andreas Färber, 2011/11/10
- Re: [Qemu-devel] [TestDays] s390x emulation error, Alexander Graf, 2011/11/10
- Re: [Qemu-devel] [TestDays] s390x emulation error,
Andreas Färber <=
- Re: [Qemu-devel] [TestDays] s390x emulation error, Alexander Graf, 2011/11/14
- Re: [Qemu-devel] [TestDays] s390x emulation error, Paolo Bonzini, 2011/11/14
Re: [Qemu-devel] [TestDays] s390x emulation error, Andreas Färber, 2011/11/12
Re: [Qemu-devel] [TestDays] s390x emulation error, Stefan Weil, 2011/11/12
Re: [Qemu-devel] [TestDays] s390x emulation error, Alexander Graf, 2011/11/12
Re: [Qemu-devel] [TestDays] s390x emulation error, Paolo Bonzini, 2011/11/13
Re: [Qemu-devel] [TestDays] s390x emulation error, Andreas Färber, 2011/11/14
Re: [Qemu-devel] [TestDays] s390x emulation error, Andreas Färber, 2011/11/18
Re: [Qemu-devel] [TestDays] s390x emulation error, Alexander Graf, 2011/11/10
Re: [Qemu-devel] [TestDays] s390x emulation error, Alexander Graf, 2011/11/18