Map the code flash with read-only attributes so we can execute from it
even under a memory protection regime that enables WXN, making all
writable memory regions non-executable by default.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
---
 ArmVirtPkg/Library/QemuVirtMemInfoLib/QemuVirtMemInfoLib.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ArmVirtPkg/Library/QemuVirtMemInfoLib/QemuVirtMemInfoLib.c b/ArmVirtPkg/Library/QemuVirtMemInfoLib/QemuVirtMemInfoLib.c
index aa083cec2082..a5324b1e4eed 100644
--- a/ArmVirtPkg/Library/QemuVirtMemInfoLib/QemuVirtMemInfoLib.c
+++ b/ArmVirtPkg/Library/QemuVirtMemInfoLib/QemuVirtMemInfoLib.c
@@ -115,7 +115,7 @@ ArmVirtGetMemoryMap (
   VirtualMemoryTable[2].PhysicalBase = PcdGet64 (PcdFvBaseAddress);
   VirtualMemoryTable[2].VirtualBase  = VirtualMemoryTable[2].PhysicalBase;
   VirtualMemoryTable[2].Length       = FixedPcdGet32 (PcdFvSize);
-  VirtualMemoryTable[2].Attributes   = ARM_MEMORY_REGION_ATTRIBUTE_WRITE_BACK;
+  VirtualMemoryTable[2].Attributes   = ARM_MEMORY_REGION_ATTRIBUTE_WRITE_BACK_RO;
 
   // End of Table
   ZeroMem (&VirtualMemoryTable[3], sizeof (ARM_MEMORY_REGION_DESCRIPTOR));
-- 
2.39.2



-=-=-=-=-=-=-=-=-=-=-=-
Groups.io Links: You receive all messages sent to this group.
View/Reply Online (#101130): https://edk2.groups.io/g/devel/message/101130
Mute This Topic: https://groups.io/mt/97586033/1787277
Group Owner: devel+owner@edk2.groups.io
Unsubscribe: https://edk2.groups.io/g/devel/unsub [importer@patchew.org]
-=-=-=-=-=-=-=-=-=-=-=-