Masayuki Ishikawa reports that this commit breaks ALL PROTECTED mode builds.
It violates the basic requirements of the use of the MPU in protected mode. Those basic requirements are:
1. The MPU region must be aligned to the base address of the memory region being mapped (it may NEVER extend before the memory region). That is, the following MUST always be zero:
(base & ((1 << l2size) - 1))
2. The MPU region must never extend beyond the end of the memory region. That is, the following must be true:
size >= (1 << l2size)
This reverts commit 8b63d02309.
b4f488e8bf