Reviewed-by: Eric Dong
> -Original Message-
> From: Ni, Ruiyu
> Sent: Monday, October 23, 2017 1:12 PM
> To: edk2-devel@lists.01.org
> Cc: Dong, Eric
> Subject: [PATCH] UefiCpuPkg/MtrrLib: Use SetMem instead of SetMem64 to
> fix hang
>
> ClearMasks and OrMasks are not 8-byte aligned.
> But SetMem64 requires the input address is 8-byte aligned.
> If the input is not 8-byte aligned, assertion is hit.
> Use SetMem instead.
>
> Contributed-under: TianoCore Contribution Agreement 1.1
> Signed-off-by: Ruiyu Ni
> Cc: Eric Dong
> ---
> UefiCpuPkg/Library/MtrrLib/MtrrLib.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/UefiCpuPkg/Library/MtrrLib/MtrrLib.c
> b/UefiCpuPkg/Library/MtrrLib/MtrrLib.c
> index 200becdd4a..8e46e46cd4 100644
> --- a/UefiCpuPkg/Library/MtrrLib/MtrrLib.c
> +++ b/UefiCpuPkg/Library/MtrrLib/MtrrLib.c
> @@ -2123,8 +2123,8 @@ MtrrLibSetBelow1MBMemoryAttribute (
>//
>// (Value & ~0 | 0) still equals to (Value)
>//
> - SetMem64 (ClearMasks, sizeof (ClearMasks), 0);
> - SetMem64 (OrMasks, sizeof (OrMasks), 0);
> + SetMem (ClearMasks, sizeof (ClearMasks), 0); SetMem (OrMasks, sizeof
> + (OrMasks), 0);
>
>MsrIndex = (UINT32)-1;
>while ((BaseAddress < BASE_1MB) && (Length != 0)) {
> --
> 2.12.2.windows.2
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