Re: testing qemu svn r6636 on FreeBSD; future of qemu on FreeBSD...

On Sat, 28 Feb 2009 18:15:20 +0100
Juergen Lock <nox_at_jelal.kn-bremen.de> 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 <nox_at_jelal.kn-bremen.de> 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

>  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.

---
Gary Jennejohn