Commit be796285 authored Apr 27, 2007 by Martin Schwidefsky

[S390] Improved kernel stack overflow checking.



Recent cvs versions of gcc have support for an improved stack overflow
checking that calculates the size of the guard size for each function.
If the compiler accepts -mstack-size without -mstack-guard then the
new stack check is available. We always want to use the new stack
checker.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>

parent 60691d3c

arch/s390/Makefile

+2 −0

Original line number	Diff line number	Diff line
		@@ -67,8 +67,10 @@ endif

		ifeq ($(call cc-option-yn,-mstack-size=8192 -mstack-guard=128),y)
		cflags-$(CONFIG_CHECK_STACK) += -mstack-size=$(STACK_SIZE)
		ifneq ($(call cc-option-yn,-mstack-size=8192),y)
		cflags-$(CONFIG_CHECK_STACK) += -mstack-guard=$(CONFIG_STACK_GUARD)
		endif
		endif

		ifeq ($(call cc-option-yn,-mwarn-dynamicstack),y)
		cflags-$(CONFIG_WARN_STACK) += -mwarn-dynamicstack