Add support for guest booting with APIC enabled

ALSchwalm commented 3 years ago

This starts to add support for guest apic interaction (which is necessary for multi core guest support). The initial steps here are as follows:

Setup a guest APIC access page (this is shared by all cores, it is just the target page that is mapped by EPT for the local apic address range)
For now, ignore all APIC access vm exits, just like we currently ignore PIC writes
Move the local apic to being per-core
Add an IoApic type that is a normal memory mapped device (though it currently doesn't do anything)

ALSchwalm commented 3 years ago

Hmm, seems like this might have a race or something. I'll try to debug.

ALSchwalm commented 3 years ago

Should be fixed now

ALSchwalm commented 3 years ago

Is this good to merge? @dlrobertson

mythril-hypervisor / mythril