[edk2-devel] [edk2-discuss] Need memory barriers in IoLib for AARCH64

[Wasim Khan]

Hello,

MdePkg/Library/BaseIoLibIntrinsic/BaseIoLibIntrinsic.inf:
IoLib library uses IoLibArm.c for AARCH64/ARM architecture and IoLib.c for other architectures. 

While IoLib.c already has memory barriers in MmioWrite functions, there barriers are missing in IoLibArm.c
Is there any reason for **not** adding these memory barriers in IoLibArm.c to guarantee that all MMIO operations
are serialized ?

I am facing some issues and I need to add memory barriers in IoLibArm.c for AARCH64 also .


Regards,
Wasim


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