[Qemu-devel] Re: testing qemu svn r6636 on FreeBSD; future of qemu on FreeBSD...

[Juergen Lock]

On Sat, Feb 28, 2009 at 08:16:50PM +0100, Gary Jennejohn wrote:
> On Sat, 28 Feb 2009 18:15:20 +0100
> Juergen Lock <address@hidden> wrote:
> 
> > On Wed, Feb 25, 2009 at 08:15:50PM +0100, Gary Jennejohn wrote:
> > > On Mon, 23 Feb 2009 22:19:33 +0100
> > > Juergen Lock <address@hidden> wrote:
> > > 
> > > > You could try a few things:
> > > > a) the same with kqemu (userland), in case its a tcg bug (or indeed a
> > > >    timeout; remember to rebuild qemu in case you built it without the
> > > >    kqemu knob enabled or otherwise kqemu won't get used), and also
> > > > b) another time with -kernel-kqemu in case its a tcg bug affecting
> > > >    guest kernel code (altho of course in both cases kqemu can cause its
> > > >    own kind of failures, even more so with amd64 guests...)
> > > >  
> > > 
> > > Neither of these work.  The only way I can get past loading the kernel
> > > is with -no-kqemu.
> > > 
> > > I still see the segmentation fault in Yast.call.  Now I know that it's
> > > in line 486, if that's of any interest.
> > > 
> > > Sorry, I'm not going to invest any more time in this.
> > 
> > Thanx.  Can someone else verify that kqemu still works on FreeBSD-current?
> >
> 
> I went back to openSUSE with the standard qemu-devel.  I found that I
> could (usually) boot w/o problems if I put -no-acpi on the CL.
> 
> Right now I have openSUSE runngin pretty well.  It's nearly as fast as
> on my old (genuine) IBM X31 laptop :)
> 
> > It is possible that you got hit by the kqemu tsc vs smp problem, i.e.
> > passing `notsc' to the guest kernel or forcing qemu onto one cpu
> > (cpuset -l 0 qemu ...) may have helped there, sorry I should have thought
> > of that earlier...
> > 
> 
> I just tried these suggestions (with the standard qemu-devel) and they
> don't seem to do any harm :-P
> 
..but they didn't help either?  (i.e. w/o -no-acpi)

> >  Also, did I get that right that this opensuse 10.3 install worked with
> > the original qemu-devel port (without kqemu)?  So we do seem to have a
> > regression here...  (thats a 20080620 qemu svn snapshot, for the folks
> > on the qemu list.)
> > 
> 
> See above.
> 
> Now I'm thinking about giving the patched qemu-devel another try, since
> I've found some workarounds for booting.  I'll see whether I can at least
> boot into the installed openSUSE using it.

 Thanx, :)
        Juergen