Reviewed-by: Ray Ni <ray...@intel.com>
> -----Original Message-----
> From: Tan, Dun <dun....@intel.com>
> Sent: Thursday, June 8, 2023 10:28 AM
> 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 V5 11/14] UefiCpuPkg: Sort mSmmCpuSmramRanges in
> FindSmramInfo
>
> Sort mSmmCpuSmramRanges after get the SMRAM info in
> FindSmramInfo() function.
>
> 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/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.c | 32
> ++++++++++++++++++++++++++++++++
> 1 file changed, 32 insertions(+)
>
> diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.c
> b/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.c
> index 2144d6ade8..2568ffd677 100644
> --- a/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.c
> +++ b/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.c
> @@ -1197,6 +1197,32 @@ PiCpuSmmEntry (
> return EFI_SUCCESS;
> }
>
> +/**
> + Function to compare 2 EFI_SMRAM_DESCRIPTOR based on CpuStart.
> +
> + @param[in] Buffer1 pointer to Device Path poiner to compare
> + @param[in] Buffer2 pointer to second DevicePath pointer to
> compare
> +
> + @retval 0 Buffer1 equal to Buffer2
> + @retval <0 Buffer1 is less than Buffer2
> + @retval >0 Buffer1 is greater than Buffer2
> +**/
> +INTN
> +EFIAPI
> +CpuSmramRangeCompare (
> + IN CONST VOID *Buffer1,
> + IN CONST VOID *Buffer2
> + )
> +{
> + if (((EFI_SMRAM_DESCRIPTOR *)Buffer1)->CpuStart >
> ((EFI_SMRAM_DESCRIPTOR *)Buffer2)->CpuStart) {
> + return 1;
> + } else if (((EFI_SMRAM_DESCRIPTOR *)Buffer1)->CpuStart <
> ((EFI_SMRAM_DESCRIPTOR *)Buffer2)->CpuStart) {
> + return -1;
> + }
> +
> + return 0;
> +}
> +
> /**
>
> Find out SMRAM information including SMRR base and SMRR size.
> @@ -1218,6 +1244,7 @@ FindSmramInfo (
> UINTN Index;
> UINT64 MaxSize;
> BOOLEAN Found;
> + EFI_SMRAM_DESCRIPTOR SmramDescriptor;
>
> //
> // Get SMM Access Protocol
> @@ -1240,6 +1267,11 @@ FindSmramInfo (
>
> mSmmCpuSmramRangeCount = Size / sizeof (EFI_SMRAM_DESCRIPTOR);
>
> + //
> + // Sort the mSmmCpuSmramRanges
> + //
> + QuickSort (mSmmCpuSmramRanges, mSmmCpuSmramRangeCount, sizeof
> (EFI_SMRAM_DESCRIPTOR),
> (BASE_SORT_COMPARE)CpuSmramRangeCompare, &SmramDescriptor);
> +
> //
> // Find the largest SMRAM range between 1MB and 4GB that is at least 256K
> - 4K in size
> //
> --
> 2.31.1.windows.1
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