[Backport v3.7-branch] xtensa: mpu: update hardware if manipulating current domain #78465
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This adds a spinlock to make sure writing to hardware MPU regions is atomic, and cannot be interrupted until all regions are written to hardware. Signed-off-by: Daniel Leung <daniel.leung@intel.com> (cherry picked from commit 6bd0dcf)
If adding/removing to the domain of the current running thread, we need to update the hardware MPU regions or else the addition or removal would not be reflected to current running thread. Signed-off-by: Daniel Leung <daniel.leung@intel.com> (cherry picked from commit da5f7e1)
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Oct 18, 2024
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Nov 4, 2024
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Backport da5f7e1~2..da5f7e1 from #75832.
Fixes #75834