Hello, 

Indeed I was able to have seL4 running on multiple harts.
Now I want to add an extra layer of shared memory (I'm not going to dig into 
the notification mechanism for the moment). I just want to create a shared 
memory region between 2 harts and check that both can have access to it.
If I'm not mistaken, that could be done using a chunk of memory defined as 
device untyped and then used by each kernel (for my tests, I'll use 2 harts) to 
write/read.  --> Is that a good understanding on how shared memory is suppose 
to be used within seL4?

David.
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