ArmPkg: Add isb when setting SCR

[mirror_edk2.git] / ArmPkg / Library / ArmLib / Common / Arm / ArmLibSupport.asm

diff --git a/ArmPkg/Library/ArmLib/Common/Arm/ArmLibSupport.asm b/ArmPkg/Library/ArmLib/Common/Arm/ArmLibSupport.asm
index bdd862a96acb836065a3e78a92b4bdf364887dc1..228d7c8fc147e4e036dee9dabd7fc0f43b2a0fcc 100644 (file)
--- a/ArmPkg/Library/ArmLib/Common/Arm/ArmLibSupport.asm
+++ b/ArmPkg/Library/ArmLib/Common/Arm/ArmLibSupport.asm
@@ -121,6 +121,7 @@
 \r
  RVCT_ASM_EXPORT ArmWriteScr\r
   mcr     p15, 0, r0, c1, c1, 0\r
+  isb\r
   bx      lr\r
 \r
  RVCT_ASM_EXPORT ArmReadHVBar\r