hard20 pts · first answer countsrtosfreertoscortex-m

Why FreeRTOS uses PendSV for switching

On Cortex-M, FreeRTOS performs context switches in the PendSV handler set to the lowest interrupt priority. Why the lowest?

A.Then the switch only runs after all other ISRs, never inside oneB.PendSV is the only exception that can access the PSP registerC.The lowest priority gives the fastest possible context switchD.Arm requires that PendSV is always set to the lowest priority

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Why FreeRTOS uses PendSV for switching

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