svn commit: r278473 - in head/sys: amd64/amd64 amd64/include amd64/vmm contrib/dev/acpica/include i386/i386 i386/include x86/acpica x86/include x86/x86 x86/xen

[Peter Grehan]

> Anyway - I have that model laptop, it hangs after calling
> ipi_startup() to the first AP with x2apic enabled. What can I do to
> continue debugging?

  Please provide the info that Kostik requested here, try out the patch, 
and wait for the timezone in Ukraine to be a little more reasonable for 
a reply.

  http://docs.FreeBSD.org/cgi/mid.cgi?20150216174658.GI34251

  Use the workaround of setting hw.x2apic_enable=0 in the loader to fall 
back to stock APIC mode.

later,

Peter.