diff options
| author | Jisheng Zhang <jszhang@kernel.org> | 2021-03-30 02:23:24 +0800 |
|---|---|---|
| committer | Palmer Dabbelt <palmerdabbelt@google.com> | 2021-04-26 08:25:09 -0700 |
| commit | e6a302248cec96c3af4cbfcedc44b0de8a26ebe0 (patch) | |
| tree | d5a7e610acdcd462632a79dd58e498f149433f73 /arch/riscv | |
| parent | de31ea4a1181a8bb4d32ab74f3434f2bc2b79122 (diff) | |
riscv: Constify sys_call_table
Constify the sys_call_table so that it will be placed in the .rodata
section. This will cause attempts to modify the table to fail when
strict page permissions are in place.
Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
Diffstat (limited to 'arch/riscv')
| -rw-r--r-- | arch/riscv/include/asm/syscall.h | 2 | ||||
| -rw-r--r-- | arch/riscv/kernel/syscall_table.c | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/arch/riscv/include/asm/syscall.h b/arch/riscv/include/asm/syscall.h index 49350c8bd7b0..b933b1583c9f 100644 --- a/arch/riscv/include/asm/syscall.h +++ b/arch/riscv/include/asm/syscall.h @@ -15,7 +15,7 @@ #include <linux/err.h> /* The array of function pointers for syscalls. */ -extern void *sys_call_table[]; +extern void * const sys_call_table[]; /* * Only the low 32 bits of orig_r0 are meaningful, so we return int. diff --git a/arch/riscv/kernel/syscall_table.c b/arch/riscv/kernel/syscall_table.c index f1ead9df96ca..a63c667c27b3 100644 --- a/arch/riscv/kernel/syscall_table.c +++ b/arch/riscv/kernel/syscall_table.c @@ -13,7 +13,7 @@ #undef __SYSCALL #define __SYSCALL(nr, call) [nr] = (call), -void *sys_call_table[__NR_syscalls] = { +void * const sys_call_table[__NR_syscalls] = { [0 ... __NR_syscalls - 1] = sys_ni_syscall, #include <asm/unistd.h> }; |