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authorMark Rutland <mark.rutland@arm.com>2015-01-08 11:42:59 +0000
committerCatalin Marinas <catalin.marinas@arm.com>2015-01-27 09:38:08 +0000
commitc623b33b4e9599c6ac5076f7db7369eb9869aa04 (patch)
tree35d6abf925bf8734e455f494acbd88101382515b
parent9648606946b3b0c608846dddb30482b48a6f5c68 (diff)
arm64: make sys_call_table const
As with x86, mark the sys_call_table const such that it will be placed in the .rodata section. This will cause attempts to modify the table (accidental or deliberate) to fail when strict page permissions are in place. In the absence of strict page permissions, there should be no functional change. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Acked-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
-rw-r--r--arch/arm64/kernel/sys.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm64/kernel/sys.c b/arch/arm64/kernel/sys.c
index dec351a..75151aa 100644
--- a/arch/arm64/kernel/sys.c
+++ b/arch/arm64/kernel/sys.c
@@ -49,7 +49,7 @@ asmlinkage long sys_rt_sigreturn_wrapper(void);
* The sys_call_table array must be 4K aligned to be accessible from
* kernel/entry.S.
*/
-void *sys_call_table[__NR_syscalls] __aligned(4096) = {
+void * const sys_call_table[__NR_syscalls] __aligned(4096) = {
[0 ... __NR_syscalls - 1] = sys_ni_syscall,
#include <asm/unistd.h>
};