tree 10c06d91204027a8688a2337aa061e51a3321c0f
parent ad597bd518559f59ede8d01262cdf4467e13282e
author Keith Owens <kaos@sgi.com> 1118048640 -0700
committer Tony Luck <tony.luck@intel.com> 1118256091 -0700

[IA64] Module gp must point to valid memory

Some bits of the kernel assume that gp always points to valid memory,
in particular PHYSICAL_MODE_ENTER() assumes that both gp and sp are
valid virtual addresses with associated physical pages.  The IA64
module loader puts gp well past the end of the module, with no physical
backing.  Offsets on gp are still valid, but physical mode addressing
breaks for modules.  Ensure that gp always falls within the module
body.  Also ensure that gp is 8 byte aligned.

Signed-off-by: Keith Owens <kaos@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>