Some things that were previously hard VM-level errors are now handled by
interrupts. While this is relatively easy to handle, I was wanting a
little more structure for the error types - so, errors that should
invoke an interrupt are passed along in their own structure in a
VmError::Interrupt variant. If an error is raised during the tick()
phase of execution that would cause an interrupt, that interrupt is
intercepted and the VM continues.
The State::interrupt() function also will catch double faults and triple
faults, with a triple fault being its own variant in the VmError
structure (so it cannot be intercepted as an interrupt by accident).
Signed-off-by: Alek Ratzloff <alekratz@gmail.com>
Alek Ratzloff
bff9220fb1