Fix a bug in which a page index was used where a byte offset was expected.  This bug caused builds of Modula-3 to fail in mysterious ways on SMP kernels.  More precisely, such builds failed on systems with kern.fast_vfork equal to 0, the default and only supported value for SMP kernels.
Fix a bug in which a page index was used where a byte offset was
expected.  This bug caused builds of Modula-3 to fail in mysterious
ways on SMP kernels.  More precisely, such builds failed on systems
with kern.fast_vfork equal to 0, the default and only supported
value for SMP kernels.

PR:		kern/7468
Submitted by:	tegge (Tor Egge)

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase