ArmPkg: Add isb when setting SCR

[mirror_edk2.git] / ArmPkg / Library / ArmLib / Common / AArch64 / ArmLibSupport.S

diff --git a/ArmPkg/Library/ArmLib/Common/AArch64/ArmLibSupport.S b/ArmPkg/Library/ArmLib/Common/AArch64/ArmLibSupport.S
index 28db98b417c32a815e4920914f489e1076fbcc60..50faef4ed0b9750aac29956e36bb532da7f2be28 100644 (file)
--- a/ArmPkg/Library/ArmLib/Common/AArch64/ArmLibSupport.S
+++ b/ArmPkg/Library/ArmLib/Common/AArch64/ArmLibSupport.S
@@ -184,6 +184,7 @@ ASM_PFX(ArmWriteCptr):
 \r
 ASM_PFX(ArmWriteScr):\r
   msr     scr_el3, x0            // Secure configuration register EL3\r
+  isb\r
   ret\r
 \r
 ASM_PFX(ArmWriteMVBar):\r