Hello Michael,

On 2021-10-19 22:46, Michael Neises wrote:
I want to be able to retrieve data from seL4's virtual
Linux machine, in order to store it in a persistent way.
[...]
If you have a different idea how I might achieve my goal,
I would be similarly effusive in my thanks.

If it is just one time, one way blob of data passing, you
could add it to Linux's command line, or put it into the
device tree before starting the VM.

Or use shared memory between your seL4 application and the VM.
You can tell Linux about it via device tree and then map it via
/dev/mem or your own Linux (UIO) kernel driver. If using camkes,
it may be easiest to create a virtual PCI UIO device (I have no
experience with camkes).

Or use HW specific device registers/SRAM to stash the values in.

The best way forward depends on what other communication you
need to do between seL4 and Linux.

Greetings,

Indan
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