On Mon, 2007-01-15 at 11:23 -0600, Hollis Blanchard wrote: > On Fri, 2007-01-12 at 19:41 -0500, Amos Waterland wrote: > > On Fri, Jan 12, 2007 at 05:45:03PM -0600, Hollis Blanchard wrote: > > > We seem to have an IPI problem, which causes vcpu_pause() to hang the > > > system. The following patch, tested on JS20 and JS21, illustrates it. > > > Before dom0 starts, IPIs work fine. After Linux's mpic_init(), IPIs (as > > > triggered by the 'I' keyhandler) lock the machine. Actually, it looks > > > like a message is trying to get out, because after a while we see a '(' > > > emitted (presumably the first character in "(XEN)"). > > > > No, this is almost certainly our code that checks that the IPI start is > > acked. If you run with `sync_console' you should see periodic messages > > about start stalls. > > > > > (When I comment out mpic_init() in dom0, Xen IPIs continue to work but > > > real IRQs (e.g. the IDE controller) fail in dom0.) > > > > Make sure you did not merge this out: > > > > > > http://lists.xensource.com/archives/html/xen-ppc-devel/2006-11/msg00149.html > > Hmmm. I had never pulled this (Linux) changeset. However, now that I > have, it doesn't seem to be helping.
Correction: the ^A commands work, so IPIs seem to be working. I still have a hang under xm destroy I'm debugging. -- Hollis Blanchard IBM Linux Technology Center _______________________________________________ Xen-ppc-devel mailing list Xenfirstname.lastname@example.org http://lists.xensource.com/xen-ppc-devel