Bureaucrats, dave_user, Administrators
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# acceptance into the mainline linux kernel
# possibility to customize the implementation in order to control the degree of isolation between the two worlds.
The first criteria guarantees future maintainability on linux side. Generally speaking, it is expected that the GPOS needs relatively frequent maintenance activities in order to add new functionalities or fix vulnerabilities and bugs. In contrast, RTOS side is typically more stable and easier to maintain. Therefore, selecting a communication mechanism that is included in mainline linux kernel is preferable form this point of overall system maintainability. The second criteria is very important because, as discussed in following sections, it is absolutely crucial that the communication channel - <u>that affects directly the degree of isolation between W1 and W2</u> - is very flexible in order to adjust it to application-specific requirements as needed.
Different solutions have been evaluated - including but not limited to