As a product manager for the Cortex-M33, I see this question pop up a lot. Below is my version of the answer.

Characteristics of TrustZone technology

• TrustZone is the security foundation for billions of ARM Cortex-A processor-based systems
• TrustZone…

hellow

     I am reading the book  “Cortex  -M3 Embedded Software Development” on page of 3,chapter 1.1 Nested Vectored Interrupt Controller (NVIC),

i don not understand  the means of tail-chaining of interrupts .In the sentence of  "The NVIC also…