From cd1de6350ea446f7d026c185f6648a7e98c4b89b Mon Sep 17 00:00:00 2001
From: Dave Rodgman <dave.rodgman@arm.com>
Date: Tue, 9 May 2023 10:12:34 +0100
Subject: [PATCH] Changelog

Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
---
 ChangeLog.d/safer-ct.txt | 6 ++++++
 1 file changed, 6 insertions(+)
 create mode 100644 ChangeLog.d/safer-ct.txt

diff --git a/ChangeLog.d/safer-ct.txt b/ChangeLog.d/safer-ct.txt
new file mode 100644
index 000000000..965472845
--- /dev/null
+++ b/ChangeLog.d/safer-ct.txt
@@ -0,0 +1,6 @@
+Security
+   * Updates to constant time C code so that compilers are less likely to use
+     conditional instructions (Clang was observed to use these). Conditional
+     instructions might have an observable difference in timing. Introduce
+     assembly implementations for 32 and 64-bit Arm which are guaranteed not
+     to use conditional instructions.