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Re: [Qemu-devel] Re: Regression: QEMU 0.8.2 (and CVS) fails to boot a de

From: Aurelien Jarno
Subject: Re: [Qemu-devel] Re: Regression: QEMU 0.8.2 (and CVS) fails to boot a debian arm
Date: Thu, 7 Sep 2006 19:18:52 +0200
User-agent: Mutt/1.5.13 (2006-08-11)

On Thu, Sep 07, 2006 at 11:45:37AM +0200, Aurelien Jarno wrote:
> Paul Brook wrote:
> >>>There is the same problem with QEMU CVS. Note that using root=/bin/sh
> >>>works well using root on NFS and even using the emulated SCSI drive.
> >>I think I have found the problem. Actually the system is not frozen, but
> >>just very slow. I now get while booting the kernel:
> >>  Calibrating delay loop... 12.16 BogoMIPS (lpj=60800)
> >>instead of
> >>  Calibrating delay loop... 486.60 BogoMIPS (lpj=2433024)
> >>
> >>Note that it is with the versatilepb (or versatileab) machine, the
> >>problem is not there with the integrator one.
> >
> >I've not idea what might be causing this. It works fine for me using both 
> >machine types.
> >
> So maybe I am doing something wrong, or I have something broken in my 
> kernel. Here is the command line I used:
> qemu-system-arm -M versatilepb -kernel vmlinuz -initrd initrd.gz -append 
> "root=/dev/ram console=ttyAMA0" -nographic
> The kernel and the initrd are available on http://temp.aurel32.net/arm . 
> The initrd is actually the one from the debian-installer. To get a 
> console, select "Go Back" to get a menu where you can select "Execute a 
> shell".
> I have compared QEMU 0.8.1, QEMU 0.8.2 and QEMU CVS, both on an i386 and 
> an amd64 machines. Versions 0.8.2 and CVS are a lot slower than version 
> 0.8.1, even for booting the kernel.
> It would be nice if somebody could do the same tests, to make sure it is 
> not related to my machines.

I have been able to determine that the bug has been introduced between
20060714 and 20060715, so it is hidden somewhere in the diff attached. I
will have a closer look later.

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

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