ArmPkg: Add isb when setting SCR

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

diff --git a/ArmPkg/Library/ArmLib/Common/Arm/ArmLibSupport.S b/ArmPkg/Library/ArmLib/Common/Arm/ArmLibSupport.S
index 59f991885995dfc754ee6f2961eae962b0a6ee1b..085f08bfda8cc425f6e43f3ee7a49e191db8f914 100644 (file)
--- a/ArmPkg/Library/ArmLib/Common/Arm/ArmLibSupport.S
+++ b/ArmPkg/Library/ArmLib/Common/Arm/ArmLibSupport.S
@@ -147,6 +147,7 @@ ASM_PFX(ArmReadScr):
 \r
 ASM_PFX(ArmWriteScr):\r
   mcr     p15, 0, r0, c1, c1, 0\r
+  isb\r
   bx      lr\r
 \r
 ASM_PFX(ArmReadHVBar):\r