Re: [PATCH v5 4/5] ArmVirtPkg: Add RngLib based on TimerLib for CryptoPkg

["Laszlo Ersek" <lersek@redhat.com>]

Hi Matthew,

On 08/12/20 04:21, matthewfcarlson@gmail.com wrote:
> From: Matthew Carlson <macarl@microsoft.com>
> 
> Updates the DSC for the ArmVirtPkg platform to add a RngLib that uses the
> TimerLib. This is due to a later change that adds TimerLib as a dependency
> for OpenSSL. The TimerLib based RngLib mimics the behavior of OpenSSL
> previously and it is recommended to switch to a better source of
> entropy than the system's performance counter.
> 
> Ref: https://github.com/tianocore/edk2/pull/845
> Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=1871
> 
> Cc: Laszlo Ersek <lersek@redhat.com>
> Cc: Ard Biesheuvel <ard.biesheuvel@arm.com>
> Cc: Leif Lindholm <leif@nuviainc.com>
> Signed-off-by: Matthew Carlson <matthewfcarlson@gmail.com>
> ---
>  ArmVirtPkg/ArmVirt.dsc.inc | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/ArmVirtPkg/ArmVirt.dsc.inc b/ArmVirtPkg/ArmVirt.dsc.inc
> index cf44fc73890b..ddfcd0cf9eee 100644
> --- a/ArmVirtPkg/ArmVirt.dsc.inc
> +++ b/ArmVirtPkg/ArmVirt.dsc.inc
> @@ -42,6 +42,7 @@
>    DebugPrintErrorLevelLib|MdePkg/Library/BaseDebugPrintErrorLevelLib/BaseDebugPrintErrorLevelLib.inf
>  
>    BaseLib|MdePkg/Library/BaseLib/BaseLib.inf
> +  RngLib|MdePkg/Library/BaseRngLibTimerLib/BaseRngLibTimerLib.inf
>    SafeIntLib|MdePkg/Library/BaseSafeIntLib/BaseSafeIntLib.inf
>    BmpSupportLib|MdeModulePkg/Library/BaseBmpSupportLib/BaseBmpSupportLib.inf
>    SynchronizationLib|MdePkg/Library/BaseSynchronizationLib/BaseSynchronizationLib.inf
> 

I think you must have missed my feedback on the ArmVirtPkg patch here:

https://edk2.groups.io/g/devel/message/63997
http://mid.mail-archive.com/c5470af9-68a3-1d74-5cef-d88f9c54b476@redhat.com

Basically, please move the RngLib class resolution just below the
OpensslLib class resolution(s) in "ArmVirtPkg/ArmVirt.dsc.inc" as well,
not just in the OVMF DSC files.

Thank you!
Laszlo