The news for processors and system-on-chip (SoC) products these
days is all about 64-bit cores powering the latest computers and
smartphones, so it's easy to be misled into thinking that all 32-bit
technology is obsolete. That quickly leads to the idea of removing support
for 32-bit hardware, which would clearly make life easier for kernel
developers in a number of ways.

At the same time, a majority of embedded systems shipped today do use 32-bit
processors, so a valid question is if this will ever change, or if 32-bit
will continue to be the best choice for devices that do not require
significant resources.