[Info-vax] Android development Was Re: OT: Larry Ellison takes retirement as CEO of Oracle

[Stephen Hoffman]

On 2014-09-23 22:09:39 +0000, David Froble said:

> As I understand it, (not sure I understand anything anymore), when 
> running in Kernel or Exec mode, privs are not required.


If you're executing in executive or kernel, you are fully privileged.

All executive- and kernel-mode code has Implicit SETPRV privilege.

The kernel-mode environment is the foundation of all system security, 
and of all system integrity, and is fundamentally what the entire 
privilege model is built on.

If you can get through the {change mode / call gate / dispatcher} and 
into executive or kernel to execute your own code, you own the entire 
system.


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