Demystifying the Secure Enclave Processor
LytVKz
LytVKz
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Privileged System Calls<br />
• Some system calls are considered privileged<br />
▫ E.g. memory and thread management calls<br />
• Only root task (SEPOS) may invoke privileged<br />
system calls<br />
▫ Determined by <strong>the</strong> space address of <strong>the</strong> caller<br />
• Check performed by each individual system call<br />
where needed<br />
▫ is_privileged_space()
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