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[IA64] Save register stack contents on cpu start
authorJack Steiner <steiner@sgi.com>
Thu, 31 Aug 2006 16:34:47 +0000 (11:34 -0500)
committerTony Luck <tony.luck@intel.com>
Fri, 8 Sep 2006 18:05:13 +0000 (11:05 -0700)
commit1c7d67073e2d196597f541351bc9b109c8a93528
tree083f41edca573e59cb773672867cd24027102014tree | snapshot (tar.gz zip)
parent2636255488484e04d6d54303d2b0ec30f7ef7e02commit | diff
[IA64] Save register stack contents on cpu start

The SN PROM uses the register stack in the slave loop. The contents
must be preserved for the OS to return to the slave loop via offlining
a cpu or for kexec. A 'flushrs" is needed to force the stack to be written
to memory prior to changing bspstore.

Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
arch/ia64/kernel/head.S diff | blob | blame | history