Xen HVM Panic, HEAD

https://people.freebsd.org/~sbruno/Xen_APIC_panic.png

I suspect that there may be one or two more lines above this that are
relevant to this panic, but XENHVM kernel's now panic booting on Xen
server.  The working kernel output looks like this:

FreeBSD clang version 3.4.1 (tags/RELEASE_34/dot1-final 208032) 20140512
XEN: Hypervisor version 4.2 detected.
CPU: Intel(R) Xeon(R) CPU           E5620  _at_ 2.40GHz (2400.05-MHz
K8-class CPU)
  Origin="GenuineIntel"  Id=0x206c2  Family=0x6  Model=0x2c  Stepping=2
 
Features=0x1783fbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,FXSR,SSE,SSE2,HTT>
 
Features2=0x81ba2201<SSE3,SSSE3,CX16,PCID,SSE4.1,SSE4.2,x2APIC,POPCNT,TSCDLT,HV>
  AMD Features=0x28100800<SYSCALL,NX,RDTSCP,LM>
  AMD Features2=0x1<LAHF>
Hypervisor: Origin = "XenVMMXenVMM"
real memory  = 1434451968 (1368 MB)
avail memory = 1353293824 (1290 MB)
Event timer "LAPIC" quality 400
ACPI APIC Table: <Xen HVM>
FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs
FreeBSD/SMP: 1 package(s) x 2 core(s)
 cpu0 (BSP): APIC ID:  0
 cpu1 (AP): APIC ID:  2
ioapic0: Changing APIC ID to 1
MADT: Forcing active-low polarity and level trigger for SCI


bcc: royger_at_

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