Andrew Yao

#4534: Remove multi irq support for mmio devices

7

## Changes -Utilized Option instead of Vector to store IRQ lines for MMIO devices. -Add test to test this. -Update existing tests ... ## Reason Currently, Firecracker have an ability...

#4547: Refactor vmm builder code to simplify logic that creates the microVM to boot

1

## Changes -Refactor code building VMM to be more modular and reduce compile time conditionals. ... ## Reason -Currently, the logic to create a Vmm object is scattered across vmm/lib.rs...