[issue1077] Kernel lockup with SMP on -HEAD

[Matthew Dillon]

:Vladimir <vladimir.n.solovyov at gmail.com> added the comment:
:
:Matt, I have rebuilt kernel without IO_APIC and it works.
:So I think I will try porting FreeBSD APIC there...

    The issue here is that for IO_APIC to work, we really need the
    acpica/ACPI stuff from FreeBSD.  A complete, fresh porting of that
    entire subsystem would be needed as well as a major revamping of the
    interrupt assignment infrastructure.

    It's a very large job, one of two big-ticket items we really need to
    get into DragonFly (the other being AMD64 support, which is being
    worked on as a SOC project).

    If you want to try your hand and getting that mess working, it would
    be great!  I won't hold you to it, though, it's a massive job.

    I'm happy you got it working with IO_APIC commented out.  That's what
    most of us have had to do.  It's a huge band-aid.

					-Matt
					Matthew Dillon 
					<dillon at backplane.com>