ULE/SCHED_SMP diff for 7.0 - panic on x86

[Roman Divacky]

On Tue, Jul 17, 2007 at 10:28:56PM +0200, Teufel wrote:
> Hi,
> 
> cvsuped kernel sources about 20 mins ago and applied Jeff's new ule patch.
> System boots normaly up, but starting qemu with kqemu (either user or 
> user and kernel space) results immediatly in kernel trap 12
> applying Attilio's    patch 
> http://people.freebsd.org/~attilio/kqemu.diff     fixed the kernel trap, 
> but hangs:
> 
> spin lock 0xc0bbf780 (shed lock 1) held by 0xc5114880 (tid 100003) too long
> panic: spin lock held too long
> cpuid = 0

this looks similar to what people are seeing on pointyhat building  cluster.

its definitely NOT related to kqemu desynced module/kernel. I have told attilio
about it. no response yet...