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ArmLib: Added Instruction Synchronization Barriers for PAN changes.

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This commit is contained in:
Mikhail Krichanov 2024-10-01 13:54:44 +03:00
parent 48f5f4f667
commit 4968eac71c
2 changed files with 4 additions and 0 deletions
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2
ArmPkg/Library/ArmLib/AArch64/AArch64Support.S
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@ -402,10 +402,12 @@ ASM_FUNC(ArmReadIdAA64Pfr1)
ASM_FUNC(ArmSetPan) ASM_FUNC(ArmSetPan)
msr pan, #1 msr pan, #1
isb
ret ret
ASM_FUNC(ArmClearPan) ASM_FUNC(ArmClearPan)
msr pan, #0 msr pan, #0
isb
ret ret
ASM_FUNCTION_REMOVE_IF_UNREFERENCED ASM_FUNCTION_REMOVE_IF_UNREFERENCED

2
ArmPkg/Library/ArmLib/Arm/ArmLibSupport.S
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@ -154,10 +154,12 @@ ASM_FUNC (ArmGetPhysicalAddressBits)
ASM_FUNC(ArmSetPan) ASM_FUNC(ArmSetPan)
setpan #1 setpan #1
isb
bx LR bx LR
ASM_FUNC(ArmClearPan) ASM_FUNC(ArmClearPan)
setpan #0 setpan #0
isb
bx LR bx LR
ASM_FUNCTION_REMOVE_IF_UNREFERENCED ASM_FUNCTION_REMOVE_IF_UNREFERENCED