Enable optional specific handling of the u-area in pmap via PMAP_UAREA if defined; from NetBSD. Currently only used on xscale arm to use the mini data cache for u area mappings instead of the main data cache.
Enable optional specific handling of the u-area in pmap via PMAP_UAREA if
defined; from NetBSD. Currently only used on xscale arm to use the mini data
cache for u area mappings instead of the main data cache.

orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars