[edk2-devel] [Patch V4 07/21] UefiCpuPkg/MpInitLib: Add code to initialize MapMask

[Ni, Ray]

Reviewed-by: Ray Ni <ray.ni at intel.com>

> -----Original Message-----
> From: Tan, Dun <dun.tan at intel.com>
> Sent: Thursday, March 23, 2023 3:41 PM
> To: devel at edk2.groups.io
> Cc: Dong, Eric <eric.dong at intel.com>; Ni, Ray <ray.ni at intel.com>; Kumar,
> Rahul R <rahul.r.kumar at intel.com>; Gerd Hoffmann <kraxel at redhat.com>
> Subject: [Patch V4 07/21] UefiCpuPkg/MpInitLib: Add code to initialize
> MapMask
> 
> In function CreatePageTable(), add code to initialize MapMask to
> MAX_UINT64. When creating new page table or map non-present range
> to present, all attributes should be provided.
> 
> Signed-off-by: Dun Tan <dun.tan at intel.com>
> Cc: Eric Dong <eric.dong at intel.com>
> Cc: Ray Ni <ray.ni at intel.com>
> Cc: Rahul Kumar <rahul1.kumar at intel.com>
> Cc: Gerd Hoffmann <kraxel at redhat.com>
> ---
>  UefiCpuPkg/Library/MpInitLib/X64/CreatePageTable.c | 5 +----
>  1 file changed, 1 insertion(+), 4 deletions(-)
> 
> diff --git a/UefiCpuPkg/Library/MpInitLib/X64/CreatePageTable.c
> b/UefiCpuPkg/Library/MpInitLib/X64/CreatePageTable.c
> index 7cf91ed9c4..f20068152b 100644
> --- a/UefiCpuPkg/Library/MpInitLib/X64/CreatePageTable.c
> +++ b/UefiCpuPkg/Library/MpInitLib/X64/CreatePageTable.c
> @@ -36,10 +36,7 @@ CreatePageTable (
>    MapAttribute.Uint64         = Address;
>    MapAttribute.Bits.Present   = 1;
>    MapAttribute.Bits.ReadWrite = 1;
> -
> -  MapMask.Bits.PageTableBaseAddress = 1;
> -  MapMask.Bits.Present              = 1;
> -  MapMask.Bits.ReadWrite            = 1;
> +  MapMask.Uint64              = MAX_UINT64;
> 
>    PageTable           = 0;
>    PageTableBufferSize = 0;
> --
> 2.31.1.windows.1



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