Re: [PATCH 3/4] MdeModulePkg/DxeIpl: Introduce PCD PcdUse5LevelPageTable

["Dong, Eric" <eric.dong@intel.com>]

Reviewed-by: Eric Dong <eric.dong@intel.com>

> -----Original Message-----
> From: Ni, Ray
> Sent: Monday, July 22, 2019 4:16 PM
> To: devel@edk2.groups.io
> Cc: Dong, Eric <eric.dong@intel.com>; Laszlo Ersek <lersek@redhat.com>
> Subject: [PATCH 3/4] MdeModulePkg/DxeIpl: Introduce PCD
> PcdUse5LevelPageTable
> 
> REF: https://bugzilla.tianocore.org/show_bug.cgi?id=2008
> 
> The PCD indicates if 5-Level Paging will be enabled in long mode.
> 5-Level Paging will not be enabled when the PCD is TRUE but CPU doesn't
> support 5-Level Paging.
> 
> Signed-off-by: Ray Ni <ray.ni@intel.com>
> Cc: Eric Dong <eric.dong@intel.com>
> Cc: Laszlo Ersek <lersek@redhat.com>
> ---
>  MdeModulePkg/MdeModulePkg.dec | 7 +++++++
>  1 file changed, 7 insertions(+)
> 
> diff --git a/MdeModulePkg/MdeModulePkg.dec
> b/MdeModulePkg/MdeModulePkg.dec index 12e0bbf579..21388595a9
> 100644
> --- a/MdeModulePkg/MdeModulePkg.dec
> +++ b/MdeModulePkg/MdeModulePkg.dec
> @@ -1991,6 +1991,13 @@ [PcdsFixedAtBuild, PcdsPatchableInModule,
> PcdsDynamic, PcdsDynamicEx]
>    # @Prompt The address mask when memory encryption is enabled.
> 
> gEfiMdeModulePkgTokenSpaceGuid.PcdPteMemoryEncryptionAddressOrM
> ask|0x0|UINT64|0x30001047
> 
> +  ## Indicates if 5-Level Paging will be enabled in long mode. 5-Level
> + Paging will not be enabled  #  when the PCD is TRUE but CPU doesn't
> support 5-Level Paging.
> +  #   TRUE  - 5-Level Paging will be enabled.<BR>
> +  #   FALSE - 5-Level Paging will not be enabled.<BR>
> +  # @Prompt Enable 5-Level Paging support in long mode.
> +
> +
> gEfiMdeModulePkgTokenSpaceGuid.PcdUse5LevelPageTable|FALSE|BOOLE
> AN|0x0
> + 001105F
> +
>    ## Capsule In Ram is to use memory to deliver the capsules that will be
> processed after system
>    #  reset.<BR><BR>
>    #  This PCD indicates if the Capsule In Ram is supported.<BR>
> --
> 2.21.0.windows.1