Re: [Qemu-devel] qemu/target-sparc exec.h op.c op_helper.c op_me...

[Andreas Färber]

Am 22.09.2007 um 13:49 schrieb Aurelien Jarno:

> On Fri, Sep 21, 2007 at 11:20:26PM +0200, Andreas Färber wrote:
> > Am 21.09.2007 um 23:07 schrieb Aurelien Jarno:
> >
> > > Aurelien Jarno a écrit :
> > > > On Fri, Sep 21, 2007 at 09:32:00PM +0200, Andreas Färber wrote:
> > > > > These changes appear to have broken sparc32-softmmu on OS X v10.4
> > > > > ppc: The OpenBIOS screen no longer appears.
> > > >
> > > > Could you try to see if qemu.log contains useful debug information
> > > > while
> > > > running in debug mode?
> > > >
> > > > I am currently building qemu-sparc on a powerpc (GNU/Linux) to  
> > > > try to
> > > > reproduce the problem, but my machine isn't really fast, it will  
> > > > take
> > > > some time.
> > >
> > > I am able to reproduce it, so it's probably an endianness problem.
> > > I am
> > > debugging...
> >
> > I have been unable to enter the monitor... If you need more
> > information from me, please provide detailed instructions how to
> > obtain the requested log file.
>
> Unfortunately I don't have the same symptoms, so I am not sure it  
> is the
> same problem. In my case the bug has been introduced by the iommu  
> commit
> which does not consider big endian hosts.
>
> The patch below fixes the problem in my case. Could you please try it?

I tried Blue Swirl's commit thereof and it still fails for me, same  
symptoms. The virtual CPU load is at about 80% and nothing happens,  
no graphical or textual output (after "starting qemu..."), it just  
hangs.

I can't say exactly which commit introduced the breakage but it  
must've been one this week... And x86 is not affected.

Could it be related to the slavio keyboard handling changes? I'm  
using an Apple keyboard.

Or maybe the 64-bit flag extension patch by Alexander Graf? Wildly  
guessing here...

Would recording serial output to a file help? Or does that apply only  
to boot problems with an OS? Anything else that could help?

Andreas