Dun,
The copyright year needs to change to 2023.
Code logic change is good to me.
Thanks,
Ray
> -----Original Message-----
> From: Tan, Dun <dun....@intel.com>
> Sent: Wednesday, March 8, 2023 6:08 PM
> To: devel@edk2.groups.io
> Cc: Dong, Eric <eric.d...@intel.com>; Ni, Ray <ray...@intel.com>; Kumar,
> Rahul R <rahul.r.ku...@intel.com>; Gerd Hoffmann <kra...@redhat.com>
> Subject: [Patch V2 01/14] UefiCpuPkg/CpuPageTableLib: Remove unneeded
> 'if' condition
>
> Remove unneeded 'if' condition in CpuPageTableLib code.
> The deleted code is in the code branch for present non-leaf parent
> entry. So the 'if' check for (ParentPagingEntry->Pnle.Bits.Present
> == 0) is always FALSE.
>
> Signed-off-by: Dun Tan <dun....@intel.com>
> Cc: Eric Dong <eric.d...@intel.com>
> Cc: Ray Ni <ray...@intel.com>
> Cc: Rahul Kumar <rahul1.ku...@intel.com>
> Cc: Gerd Hoffmann <kra...@redhat.com>
> ---
> UefiCpuPkg/Library/CpuPageTableLib/CpuPageTableMap.c | 9 ---------
> 1 file changed, 9 deletions(-)
>
> diff --git a/UefiCpuPkg/Library/CpuPageTableLib/CpuPageTableMap.c
> b/UefiCpuPkg/Library/CpuPageTableLib/CpuPageTableMap.c
> index 37713ec659..47027917d9 100644
> --- a/UefiCpuPkg/Library/CpuPageTableLib/CpuPageTableMap.c
> +++ b/UefiCpuPkg/Library/CpuPageTableLib/CpuPageTableMap.c
> @@ -375,15 +375,6 @@ PageTableLibMapInLevel (
> // we need to change PDPTE[0].ReadWrite = 1 and let all PDE[0-
> 255].ReadWrite = 0 in this step.
> // when PDPTE[0].Nx = 1 but caller wants to map [0-2MB] as Nx = 0
> (PDT[0].Nx = 0)
> // we need to change PDPTE[0].Nx = 0 and let all
> PDE[0-255].Nx = 1 in
> this step.
> - if ((ParentPagingEntry->Pnle.Bits.Present == 0) && (Mask->Bits.Present
> == 1) && (Attribute->Bits.Present == 1)) {
> - if (Modify) {
> - ParentPagingEntry->Pnle.Bits.Present = 1;
> - }
> -
> - ChildAttribute.Bits.Present = 0;
> - ChildMask.Bits.Present = 1;
> - }
> -
> if ((ParentPagingEntry->Pnle.Bits.ReadWrite == 0) && (Mask-
> >Bits.ReadWrite == 1) && (Attribute->Bits.ReadWrite == 1)) {
> if (Modify) {
> ParentPagingEntry->Pnle.Bits.ReadWrite = 1;
> --
> 2.31.1.windows.1
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