prctl: Add force disable speculation

[mirror_ubuntu-artful-kernel.git] / include / uapi / linux / prctl.h

diff --git a/include/uapi/linux/prctl.h b/include/uapi/linux/prctl.h
index 51858b439c23c45a8e9d13ae1ede48c307d58b97..c0202187cbef531e55ee2978e9e876c44a634ed5 100644 (file)
--- a/include/uapi/linux/prctl.h
+++ b/include/uapi/linux/prctl.h
@@ -197,6 +197,18 @@ struct prctl_mm_map {
 # define PR_CAP_AMBIENT_LOWER          3
 # define PR_CAP_AMBIENT_CLEAR_ALL      4
 
+/* Per task speculation control */
+#define PR_GET_SPECULATION_CTRL                52
+#define PR_SET_SPECULATION_CTRL                53
+/* Speculation control variants */
+# define PR_SPEC_STORE_BYPASS          0
+/* Return and control values for PR_SET/GET_SPECULATION_CTRL */
+# define PR_SPEC_NOT_AFFECTED          0
+# define PR_SPEC_PRCTL                 (1UL << 0)
+# define PR_SPEC_ENABLE                        (1UL << 1)
+# define PR_SPEC_DISABLE               (1UL << 2)
+# define PR_SPEC_FORCE_DISABLE         (1UL << 3)
+
 /*
  * Control the LSM specific peer information
  *