[qnx hypervisor 2.2 user manual]12.1 terminology (I)

The following is throughout Hypervisor Terms in documents .

Blob

about hypervisor Speaking of ,Guest It's just one. Blob.Blob Used to emphasize Guest about Hypervisor It is a black box , It's like running on the motherboard or the development version OS For the development version, it is a black box .

CPU privilege level - CPU Privilege level

One CPU The privilege level of controls the resources such as memory area of the program currently running on the processor ,I/O port , Access to special instructions , Reference resources “Understanding QNX Virtual Environments” Chapter “CPU privilege levels”.

DMA - Direct Memory Access Direct memory access

Direct memory access

Exception Level（EL） - Exception level

ARMv8 ELs Has replaced ARMv7 ELs.ELs yes ARM The defined permission level for the process to run . Such as EL0 Have a minimum rating , and EL3 Have the largest rating （ Used for safety related ）.

Emulation -  Simulation

Emulation means simulating a particular type of hardware for the operating system , Regardless of the bottom layer Host What is the operating system .

stay QNX Environment , The simulation is expressed as Guest And simulate a set of hardware devices . In a virtualized environment , One Hypervisor It contains a lot of