[ARM] Improve non-executable support
Add support for detecting non-executable stack binaries, and adjust
permissions to prevent execution from data and stack areas. Also,
ensure that READ_IMPLIES_EXEC is enabled for older CPUs where that
is true, and for any executable-stack binary.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/kernel/Makefile b/arch/arm/kernel/Makefile
index 1d296fc..4305345 100644
--- a/arch/arm/kernel/Makefile
+++ b/arch/arm/kernel/Makefile
@@ -10,7 +10,7 @@
# Object file lists.
-obj-y := compat.o entry-armv.o entry-common.o irq.o \
+obj-y := compat.o elf.o entry-armv.o entry-common.o irq.o \
process.o ptrace.o setup.o signal.o \
sys_arm.o stacktrace.o time.o traps.o