[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

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

From: Aurelien Jarno
Subject: Re: [Qemu-devel] I got a kernel booted under qemu-system-ppc !
Date: Sat, 20 Oct 2007 16:49:41 +0200
User-agent: IceDove (X11/20070328)

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

  .''`.  Aurelien Jarno             | GPG: 1024D/F1BCDB73
 : :' :  Debian developer           | Electrical Engineer
 `. `'   address@hidden         | address@hidden
   `-    people.debian.org/~aurel32 | www.aurel32.net

reply via email to

[Prev in Thread] Current Thread [Next in Thread]