METHOD OF SECUREOS FUNCTIONING ON MULTIPROCESSOR SYSTEMS IN MOBILE DEVICES Russian patent published in 2018 - IPC G06F21/74 G06F9/46 

FIELD: information technology.

SUBSTANCE: method comprises the steps of: after activating the thread in a secure operating system (SecureOS), assigning in SecureOS this thread to the Core Processing Unit (CPU), which purpose includes the step of changing the CPU mask. The CPU mask is a data structure supported in SecureOS to inform the unprotected operating system (RichOS) of the current needs of SecureOS in the CPU cores; CPU mask is transferred via SecureOS in RichOS for requesting RichOS to provide SecureOS control on the CPU core; on the basis of the CPU mask, the core of the CPU is enabled via RichOS, if the CPU core is disabled; and CPU core is switched via the RichOS to the protected mode, providing SecureOS control on the CPU core. Mobile device contains CPU, which has many CPU cores, each of which functions either in protected or in unprotected mode, and installed on the mobile device RichOS and SecureOS support multithreading and communicate with each-other through a predefined interface.

EFFECT: improved performance of a protected operating system.

30 cl, 5 dwg