Re: [Qemu-devel] I got a kernel booted under qemu-system-ppc !

[Aurelien Jarno <aurelien@aurel32.net>]

Aurelien Jarno a écrit :
> Aurelien Jarno a écrit :
> 
>> I have used QEMU CVS with a Debian Sid image. It basically works, I am
>> even able to login via SSH, but I have noticed two problems:
>>
>> - Some process hang, stay into "D" state and become unkillable. It seems
>>   it can happen to all processes, but it is always reproducible with
>>   uptime or top. I still don't know if it is a problem of the kernel or
>>   if it comes from the emulation.
> 
> This problem arise when using floating point instructions. It can be
> easily triggered by running the following testcase:
> 
> #include <stdio.h>
> 
> int main()
> {
>         double a = 1.34;
>         printf("%.2f", a);
>         return 0;
> }
> 

This is actually not enough to trigger the bug. The testcase works if
the bug has already been trigger in another process before, for example
uptime.

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