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A comment on So you want to build an embedded Linux system?. Parent comment

Re:So you want to build an embedded Linux system? by jaydcarlson on Friday October 16, 2020 @02:30PM (#24803612)
None of these application processors I reviewed have out-of-order execution. Cortex-M7 microcontrollers have icache/dcache. You can run bare-metal code on any of these application processors and it will behave more or less like a microcontroller. The lines are really pretty blurry, but the MMU is the big dividing line in my opinion (but it's obviously open for discussion).
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Re:So you want to build an embedded Linux system? by magicalhippo on Friday October 16, 2020 @04:39PM (#24804807)
> None of these application processors I reviewed have out-of-order execution.

You're right, I was thinking of the A8, A9 and similar.

> the MMU is the big dividing line in my opinion

I'm no expert, but seems like a reasonable line in the sand to me.

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