Hi,

In the seL4 FAQ section it states:

"Multicore is presently supported on x64 and Arm v7 (32-bit) and v8 (64-bit). Verification of the multicore kernel is in progress (but presently as an unfunded background activity)."

Considering only seL4 ----------------------------- My interpretation of this is that given a single seL4 application running on a device, it is not possible to currently guarantee the protections seL4 provides if the application invokes multiple threads across more than 1 core. Is this correct?

Considering CAmkES ---------------------------- I would also like to know how CAmkES affects this. For example, looking at the vm_multi app for the exynos5422 in the camkes-arm-vm repository, what would the effect be of assigning unique CPU affinities to each of the VM components? Do the guarantees still hold in this situation?

Thanks,

Ben Turner Senior Engineer Roke Manor Research Ltd Tel: +44 (0)1794 833721 ben.turner@roke.co.ukmailto:ben.turner@roke.co.uk

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