RISC-V: Difference between revisions

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In RISC-V, the privilege mode of a ''hart'' can be changed by:
* A trap or interrupt in the thread caught by a higher privilege mode
* The execution of the `<code>mret`</code> or `<code>sret`</code> instructions
* Intervention by a hardware debugger
* A hart being reset (it always starts in Machine mode)