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Commit 207988da authored by Tony Luck's avatar Tony Luck Committed by Greg Kroah-Hartman
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guard page for stacks that grow upwards

commit 8ca3eb08

 upstream.

pa-risc and ia64 have stacks that grow upwards. Check that
they do not run into other mappings. By making VM_GROWSUP
0x0 on architectures that do not ever use it, we can avoid
some unpleasant #ifdefs in check_stack_guard_page().

Signed-off-by: default avatarTony Luck <tony.luck@intel.com>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
Cc: dann frazier <dannf@debian.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 5f2a867e
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