Can we use a host test specific RngLib?



From: Li, Yi1 <yi1.li@intel.com>
Sent: Friday, June 14, 2024 3:08 PM
To: devel@edk2.groups.io
Cc: Hou, Wenxing <wenxing.hou@intel.com>; Yao, Jiewen <jiewen.yao@intel.com>; Kinney, Michael D <michael.d.kinney@intel.com>; Pedro Falcato <pedro.falcato@gmail.com>; Ard Biesheuvel <ardb+tianocore@kernel.org>
Subject: CryptoPkg host test broken due to smoketest for RDRAND

All crypto host tests which consumed randlib broken due to:
https://github.com/tianocore/edk2/pull/5714
Not sure why this issue not reported  by CI when merge this PR.

The reason is that the ```BaseRngLibConstructor``` of rnglib is not called in host test, so ```mRdRandSupported``` is not enabled.
Then the Crypto API calls ```GetRandomNumber*``` will fail.
GetRandomNumber64 (
  OUT     UINT64  *Rand
  )
{
  ......
  if (!ArchIsRngSupported ()) {
    return FALSE;
  }

Is there a way to let unit test host to call the constructors correctly?

Regards,
Yi



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