Reviewed-by: Michael D Kinney <[email protected]>

> -----Original Message-----
> From: Ni, Ray <[email protected]>
> Sent: Tuesday, March 21, 2023 4:57 PM
> To: [email protected]
> Cc: Dong, Eric <[email protected]>; Kumar, Rahul R 
> <[email protected]>; Gerd Hoffmann <[email protected]>; Kinney,
> Michael D <[email protected]>; Anadani, Ahmad 
> <[email protected]>
> Subject: [PATCH 2/6] UefiCpuPkg/MtrrTest: Only claim CPUID max leaf as 1
> 
> MtrrLib code queries the CPUID leaf 7h result if support.
> Update Test code temporary to claim the CPUID only
> supports max leaf as 1 so MtrrLib skips to query CPUID leaf 7h.
> 
> Signed-off-by: Ray Ni <[email protected]>
> Cc: Eric Dong <[email protected]>
> Cc: Rahul Kumar <[email protected]>
> Cc: Gerd Hoffmann <[email protected]>
> Cc: Michael D Kinney <[email protected]>
> Cc: Ahmad Anadani <[email protected]>
> ---
>  UefiCpuPkg/Library/MtrrLib/UnitTest/Support.c | 9 ++++++++-
>  1 file changed, 8 insertions(+), 1 deletion(-)
> 
> diff --git a/UefiCpuPkg/Library/MtrrLib/UnitTest/Support.c 
> b/UefiCpuPkg/Library/MtrrLib/UnitTest/Support.c
> index 748c403281..260966e7b6 100644
> --- a/UefiCpuPkg/Library/MtrrLib/UnitTest/Support.c
> +++ b/UefiCpuPkg/Library/MtrrLib/UnitTest/Support.c
> @@ -1,7 +1,7 @@
>  /** @file
> 
>    Unit tests of the MtrrLib instance of the MtrrLib class
> 
> 
> 
> -  Copyright (c) 2018 - 2020, Intel Corporation. All rights reserved.<BR>
> 
> +  Copyright (c) 2018 - 2023, Intel Corporation. All rights reserved.<BR>
> 
>    SPDX-License-Identifier: BSD-2-Clause-Patent
> 
> 
> 
>  **/
> 
> @@ -122,6 +122,13 @@ UnitTestMtrrLibAsmCpuid (
>    )
> 
>  {
> 
>    switch (Index) {
> 
> +    case CPUID_SIGNATURE:
> 
> +      if (Eax != NULL) {
> 
> +        *Eax = CPUID_VERSION_INFO;
> 
> +      }
> 
> +
> 
> +      return Index;
> 
> +      break;
> 
>      case CPUID_VERSION_INFO:
> 
>        if (Edx != NULL) {
> 
>          *Edx = mCpuidVersionInfoEdx.Uint32;
> 
> --
> 2.39.1.windows.1



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