[edk2-devel] [PATCH v2 03/16] StandaloneMmPkg: StandaloneMmCoreMemoryAllocationLib: Fix compiler warning
Yao, Jiewen
jiewen.yao at intel.com
Wed Jan 6 03:33:56 UTC 2021
Reviewed-by: Jiewen Yao <Jiewen.yao at intel.com>
> -----Original Message-----
> From: Kun Qin <kun.q at outlook.com>
> Sent: Wednesday, January 6, 2021 2:59 AM
> To: devel at edk2.groups.io
> Cc: Ard Biesheuvel <ard.biesheuvel at arm.com>; Sami Mujawar
> <sami.mujawar at arm.com>; Yao, Jiewen <jiewen.yao at intel.com>; Supreeth
> Venkatesh <supreeth.venkatesh at arm.com>
> Subject: [PATCH v2 03/16] StandaloneMmPkg:
> StandaloneMmCoreMemoryAllocationLib: Fix compiler warning
>
> Assigning MmramRangeCount from MmCorePrivate (UINT64) to local
> variable
> MmramRangeCount (UINT32) will cause compilation failure due to "warning
> C4244: '=': conversion from 'UINT64' to 'UINT32', possible loss of data".
> This changes defines local MmramRangeCount as UINTN type and adds type
> cast before value assignment.
>
> Cc: Ard Biesheuvel <ard.biesheuvel at arm.com>
> Cc: Sami Mujawar <sami.mujawar at arm.com>
> Cc: Jiewen Yao <jiewen.yao at intel.com>
> Cc: Supreeth Venkatesh <supreeth.venkatesh at arm.com>
>
> Signed-off-by: Kun Qin <kun.q at outlook.com>
> ---
>
> Notes:
> v2:
> - Changed variable type to UINTN and cast before assignments [Jiewen]
>
>
> StandaloneMmPkg/Library/StandaloneMmCoreMemoryAllocationLib/Stan
> daloneMmCoreMemoryAllocationLib.c | 6 +++---
> 1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git
> a/StandaloneMmPkg/Library/StandaloneMmCoreMemoryAllocationLib/Sta
> ndaloneMmCoreMemoryAllocationLib.c
> b/StandaloneMmPkg/Library/StandaloneMmCoreMemoryAllocationLib/Sta
> ndaloneMmCoreMemoryAllocationLib.c
> index eb3d772e18c5..c6feb25a3821 100644
> ---
> a/StandaloneMmPkg/Library/StandaloneMmCoreMemoryAllocationLib/Sta
> ndaloneMmCoreMemoryAllocationLib.c
> +++
> b/StandaloneMmPkg/Library/StandaloneMmCoreMemoryAllocationLib/Sta
> ndaloneMmCoreMemoryAllocationLib.c
> @@ -841,7 +841,7 @@ MemoryAllocationLibConstructor (
> VOID *HobStart;
> EFI_MMRAM_HOB_DESCRIPTOR_BLOCK *MmramRangesHobData;
> EFI_MMRAM_DESCRIPTOR *MmramRanges;
> - UINT32 MmramRangeCount;
> + UINTN MmramRangeCount;
> EFI_HOB_GUID_TYPE *MmramRangesHob;
>
> HobStart = GetHobList ();
> @@ -868,7 +868,7 @@ MemoryAllocationLibConstructor (
> return EFI_UNSUPPORTED;
> }
>
> - MmramRangeCount = MmramRangesHobData-
> >NumberOfMmReservedRegions;
> + MmramRangeCount = (UINTN) MmramRangesHobData-
> >NumberOfMmReservedRegions;
> if (MmramRanges == NULL) {
> return EFI_UNSUPPORTED;
> }
> @@ -877,7 +877,7 @@ MemoryAllocationLibConstructor (
> DataInHob = GET_GUID_HOB_DATA (GuidHob);
> MmCorePrivate = (MM_CORE_PRIVATE_DATA *)(UINTN)DataInHob-
> >Address;
> MmramRanges = (EFI_MMRAM_DESCRIPTOR
> *)(UINTN)MmCorePrivate->MmramRanges;
> - MmramRangeCount = MmCorePrivate->MmramRangeCount;
> + MmramRangeCount = (UINTN) MmCorePrivate->MmramRangeCount;
> }
>
> {
> --
> 2.30.0.windows.1
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