...Except that HIGHMEM64 kernel also fails to boot on everything that
does not support PAE perfectly or has a slightest bug in the support.
Keep in mind the present hardware requirements of Ubuntu (works even for
old computers), and the fact that LTSes must be around for several
years. PAE would cause problems with surprisingly many computers,
including potentially new clone chips such as VIA's creations... The
amount of uncontent from that move would me major.
Furthermore there is 3-6% performance impact on everything memory
related, and a single process still has 3G limitation in their
addressing. This means that even computers with less than that 3G memory
would get the performance hit. As much as I would want this to happen it
is not feasible nor likely will be feasible to have such kernel as
default. Just move into 64-bit Linux, it does run also every 32-bit
application just fine. The time of running 32-bit distributions has been
over for couple years already to be honest.
** Changed in: ubuntu
Status: New => Invalid
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HIGHMEM64G is not enabled in Ubuntu Desktop 32-bit
https://bugs.launchpad.net/bugs/179025
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