arm64: kernel: Add support for User Access Override

[cascardo/linux.git] / arch / arm64 / include / asm / thread_info.h

diff --git a/arch/arm64/include/asm/thread_info.h b/arch/arm64/include/asm/thread_info.h
index abd64bd..eba8db6 100644 (file)
--- a/arch/arm64/include/asm/thread_info.h
+++ b/arch/arm64/include/asm/thread_info.h
@@ -85,6 +85,12 @@ static inline struct thread_info *current_thread_info(void)
        return (struct thread_info *)sp_el0;
 }
 
+/* Access struct thread_info of another thread */
+static inline struct thread_info *get_thread_info(unsigned long thread_stack)
+{
+       return (struct thread_info *)(thread_stack & ~(THREAD_SIZE - 1));
+}
+
 #define thread_saved_pc(tsk)   \
        ((unsigned long)(tsk->thread.cpu_context.pc))
 #define thread_saved_sp(tsk)   \