Changeset

  roland@redhat.com[torvalds]|ChangeSet|20040624165002|30880

inadvertently broke ia64 because the patch assumed that pgd_offset_k() is
just an optimization of pgd_offset(), which it is not.  This patch fixes
the problem by introducing pgd_offset_gate().  On architectures on which
the gate area lives in the user's address-space, this should be aliased to
pgd_offset() and on architectures on which the gate area lives in the
kernel-mapped segment, this should be aliased to pgd_offset_k().

This bug was found and tracked down by Peter Chubb.

Signed-off-by: <davidm@hpl.hp.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>