MFC r208100:

MFC r208100:
  Fix an issue with the dynamic pcpu/vnet data allocators.

  We cannot expect that modspace is the last entry in the linker
  set and thus that modspace + possible extra space up to PAGE_SIZE
  would be contiguous.  For the moment do not support more than
  *_MODMIN space and ignore the extra space.

Discussed with:	jeff, rwatson (briefly)
Reviewed by:	jeff
Sponsored by:	The FreeBSD Foundation
Sponsored by:	CK Software GmbH

git-svn-id: svn://svn.freebsd.org/base/stable/8@208251 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f