syscall_get_arch
int syscall_get_arch(struct task_struct *task);
context->arch = syscall_get_arch(current);
signr, syscall_get_arch(current), syscall,
info.si_arch = syscall_get_arch(current);
.arch = syscall_get_arch(child),
sd->arch = syscall_get_arch(task);
info.si_arch = syscall_get_arch(current);