Re: [Xen-devel] Re: Where to get FreeBSD port for Xen

[Kip Macy <kmacy@xxxxxxxxxxx>]

Funny you should ask. I just updated libxc to work with xen's current
context representation (previously I could just copy cpu_ctxt out and
everything worked, but just prior to the change most of the register
contents were wrong). I'll try to get everything posted within the hour.

One observation - I can't comment on 64MB, but FreeBSD 5.x doesn't do an
adequate job of managing its memory to stay up with 32MB or less.

                        -Kip



On Tue, 25 Jan 2005, Hidetoshi Shimokawa wrote:

> I have experianced strange lockups sometimes.
> In that case, 'xm list' shows no state for freebsd.
> (usually it is blocked)
>
> Name              Id  Mem(MB)  CPU  State  Time(s)  Console
> Domain-0           0       59    0  r----    990.1
> freebsd.sample     2       64    0  -----    547.6    9602
>
> I'd like to analyze this problem using debugger.
> I found gdbserver binary in your web site but it seems old and
> to require old libraries. Can I get the gdbserver source?
>
> Thanks,
>
> /\ Hidetoshi Shimokawa
> \/  simokawa@xxxxxxxxxxx
>
>
> At Mon, 24 Jan 2005 13:29:38 -0800 (PST),
> Kip Macy wrote:
> >
> > Thanks for patch and the heads up on the successful boot.
> >
> > I'll apply the patch and update the posted tarball and kernel tonight.
> >
> >
> >
> >                                     -Kip
> >
> > On Mon, 24 Jan 2005, Hidetoshi Shimokawa wrote:
> >
> > > Thank you very much for your work, Kip.
> > >
> > > I successfully booted xenofreebsd from your source.
> > > The following patch(obtained from NetBSD) seems to
> > > fix the scheduling problem.
> > >
> > > /\ Hidetoshi Shimokawa
> > > \/  simokawa@xxxxxxxxxxx
> > >
> > > diff -u -r /home/simokawa/xen/i386-xeno/i386-xeno/clock.c 
> > > i386-xeno/i386-xeno/clock.c
> > > --- /home/simokawa/xen/i386-xeno/i386-xeno/clock.c        Mon Jan 24 
> > > 10:36:19 2005
> > > +++ i386-xeno/i386-xeno/clock.c   Mon Jan 24 16:58:31 2005
> > > @@ -502,3 +502,10 @@
> > >   /* our adjusted time offset in microseconds */
> > >   return edx;
> > >  }
> > > +
> > > +void
> > > +idle_block(void)
> > > +{
> > > + if (HYPERVISOR_set_timer_op(processed_system_time + NS_PER_TICK) == 0)
> > > +         HYPERVISOR_block();
> > > +}
> > > diff -u -r /home/simokawa/xen/i386-xeno/i386-xeno/machdep.c 
> > > i386-xeno/i386-xeno/machdep.c
> > > --- /home/simokawa/xen/i386-xeno/i386-xeno/machdep.c      Mon Jan 24 
> > > 10:36:19 2005
> > > +++ i386-xeno/i386-xeno/machdep.c Mon Jan 24 17:50:25 2005
> > > @@ -140,6 +140,7 @@
> > >  #include <machine/hypervisor.h>
> > >  #include <machine/xenfunc.h>
> > >  #include <machine/xenvar.h>
> > > +#include <machine/xen_intr.h>
> > >
> > >  void Xhypervisor_callback(void);
> > >  void failsafe_callback(void);
> > > @@ -903,8 +904,13 @@
> > >    */
> > >   __asm __volatile("sti; hlt");
> > >  #endif
> > > +#if 0
> > >   enable_intr();
> > >   HYPERVISOR_yield();
> > > +#else
> > > + idle_block();
> > > + enable_intr();
> > > +#endif
> > >  }
> > >
> > >  /*
> > > diff -u -r /home/simokawa/xen/i386-xeno/include/xen_intr.h 
> > > i386-xeno/include/xen_intr.h
> > > --- /home/simokawa/xen/i386-xeno/include/xen_intr.h       Mon Jan 24 
> > > 10:36:19 2005
> > > +++ i386-xeno/include/xen_intr.h  Mon Jan 24 17:48:55 2005
> > > @@ -44,6 +44,7 @@
> > >  extern void irq_suspend(void);
> > >  extern void irq_resume(void);
> > >
> > > +extern void idle_block(void);
> > >
> > >
> > >  #endif /* _XEN_INTR_H_ */
> > >
> > >
> > > At Sun, 23 Jan 2005 18:25:25 -0800 (PST),
> > > Kip Macy wrote:
> > > >
> > > > For those interested I've uploaded a source tarball and copied in
> > > > updated directions.
> > > >
> > > >
> > > >                                         -Kip
> > > >
> > > >
> > > >
> > > > On Sun, 23 Jan 2005, Derrik Pates wrote:
> > > >
> > > > > Kip Macy wrote:
> > > > > > It looks like apache had gone out to lunch. I just restarted it and 
> > > > > > it
> > > > > > is accessible again. If you wait a day I'll have 5.3 up. 5.2.1 is 
> > > > > > what
> > > > > > is there right now.
> > > > >
> > > > > Kip:
> > > > >
> > > > > Any luck with that FreeBSD 5.3 kernel? Our network engineer wants to 
> > > > > set
> > > > > up a Xen box for internal use with Debian and FreeBSD on it, and I'm
> > > > > hoping to get FreeBSD 5.3 on there. Also, were you able to figure out
> > > > > the blocking stuff in the scheduling code?
> > > > >
> > > > > --
> > > > > Derrik Pates
> > > > > demon@xxxxxxxxxxxxx
> > > > >
> > > >
> > > >
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> > >
>


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