diff options
Diffstat (limited to 'kernel/sys.c')
| -rw-r--r-- | kernel/sys.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/kernel/sys.c b/kernel/sys.c index cf40663a54c2..3195435462a6 100644 --- a/kernel/sys.c +++ b/kernel/sys.c @@ -2224,6 +2224,17 @@ static int prctl_set_vma(unsigned long opt, unsigned long start, } #endif +int __weak arch_prctl_spec_ctrl_get(struct task_struct *t, unsigned long which) +{ + return -EINVAL; +} + +int __weak arch_prctl_spec_ctrl_set(struct task_struct *t, unsigned long which, + unsigned long ctrl) +{ + return -EINVAL; +} + SYSCALL_DEFINE5(prctl, int, option, unsigned long, arg2, unsigned long, arg3, unsigned long, arg4, unsigned long, arg5) { @@ -2444,6 +2455,15 @@ SYSCALL_DEFINE5(prctl, int, option, unsigned long, arg2, unsigned long, arg3, break; case PR_SET_VMA: error = prctl_set_vma(arg2, arg3, arg4, arg5); + case PR_GET_SPECULATION_CTRL: + if (arg3 || arg4 || arg5) + return -EINVAL; + error = arch_prctl_spec_ctrl_get(me, arg2); + break; + case PR_SET_SPECULATION_CTRL: + if (arg4 || arg5) + return -EINVAL; + error = arch_prctl_spec_ctrl_set(me, arg2, arg3); break; default: error = -EINVAL; |