Hi Yi Li, I have posted the recent patch set to enable ECC ciphers in OpenSSLLib to the bug https://bugzilla.tianocore.org/show_bug.cgi?id=3679 I have ran the entire OVMF Azure pipeline locally and confirm that the code gets build without any issue. Thanks for the inputs after enlarging DXEFV the build succeeded. I am new to EDK build and to the overall process so please review the patch set and provide your comments. I am happy to address them. Once reviewed I can add it to the proposed feature to the release planning wiki 0001-Crypto-Enable-ECC-ciphers.patch 0002-Port-VsIntrinsicLib-from-Project-Mu.patch 0003-Reference-VsIntrinsicLib.patch 0004-Increase-FV-size.patch Thanks, Vineel