Hi Michael

This is the change to MdePkg/Library/BaseLib/RiscV64. 
Since it is for RiscV specific, I somehow got the review from Sunil.
Not sure need additional reviewer and or anything else from my side ?
It is my first patch to edk2, please help proceed and look for the feedback. 
Thanks 


On 2023/6/3 1:09, Sunil V L wrote:
> On Thu, Jun 01, 2023 at 06:56:05PM +0800, Yong Li wrote:
>> Implement the SpeculationBarrier with implementations consisting of
>> fence instruction which provides finer-grain memory orderings.
>> Perform Data Barrier in RiscV: fence rw,rw
>> Perform Instruction Barrier in RiscV: fence.i; fence r,r
>> More detail is in Appendix A: RVWMO Explanatory Material in
>> https://github.com/riscv/riscv-isa-manual
>>
>> This API is first introduced in the below commits for IA32 and x64
>> https://github.com/tianocore/edk2/commit/d9f1cac51bd354507e880e614d11a1dc160d38a3
>> https://github.com/tianocore/edk2/commit/e83d841fdc2878959185c4c6cc38a7a1e88377a4
>> and below the commit for ARM and AArch64 implementation
>> https://github.com/tianocore/edk2/commit/c0959b4426b2da45cdb8146a5116bb4fd9b86534
>>
>> This commit is to add the RiscV64 implementation which will be used by
>> variable service under Variable/RuntimeDxe
>>
>> Cc: Andrei Warkentin <andrei.warken...@intel.com>
>> Cc: Evan Chai <evan.c...@intel.com>
>> Cc: Sunil V L <suni...@ventanamicro.com>
>> Cc: Tuan Phan <tp...@ventanamicro.com>
>> Signed-off-by: Yong Li <yong...@intel.com>
>> ---
> 
> Reviewed-by: Sunil V L <suni...@ventanamicro.com>
> 
> Thanks,
> Sunil
> 
> 
> 
> 
> 


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