This is a backport of641a65fd06in master. This change re-enables PAE for the 32-bit x86 subtarget, which is interesting in its own right but also necessary for Xen support. Commitaf1d1ebd("x86: enable 4G high memory support for generic (32bit) subtarget") inadvertently disabled both PAE and Xen support. Fixes: FS#908 Cc: Daniel Golle <daniel@makrotopia.org> Cc: Jo-Philipp Wich <jo@mein.io> Signed-off-by: Baptiste Jonglez <git@bitsofnetworks.org>