Re: [PATCH v3 0/3] Add "num-prio-bits" property for Cortex-M devices

[Peter Maydell]

On Sat, 6 Jan 2024 at 18:15, Samuel Tardieu <sam@rfc1149.net> wrote:
>
> This patch series builds on a discussion initiated by Anton Kochkov on
> this list in 2022. It allows setting the appropriate number of priority
> bits for Cortex-M devices. For example, FreeRTOS checks at startup that
> the right number of priority bits is available in order to guarantee
> its runtime structures safety. They have added a configuration option
> to disable this check when running on QEMU because QEMU always use 2
> bits for Cortex-M0/M0+/M1 and 8 bits for other devices.
>
> While this change allows the number of priority bits to be properly
> configured, it keeps the same default as before in order to preserve
> backward compatibility unless the SoC configures the exact value.



Applied to target-arm.next, thanks.

-- PMM