[rtl] Memory Protection/Priority Inversion/Nested Interrupts

[Gavin Peters <gpeters@wireless-sys.com>]

Hello,

    I'm in the process of considering RTLinux for an embedded
application, but there are few questions nagging at me that I've been
unable to divine from my somewhat inexpert readings of the source and 
documentation.

    I realise that there's no memory protection between RTLinux tasks
in the default configuration.  Is there a way to add this that anybody 
has used?  I've never played with x86 protected modes before - is
this even a difficult thing to throw in?

    What facilities does RTLinux provide to prevent priority
inversion?  I noticed there is not priority inheritance.

    Does RTLinux allow nested interrupts?

Thanks,
Gavin

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