//\r
if (EnableMtrr) {\r
TempQword = AsmReadMsr64(EFI_MSR_CACHE_IA32_MTRR_DEF_TYPE);\r
- TempQword |= (B_EFI_MSR_GLOBAL_MTRR_ENABLE | B_EFI_MSR_FIXED_MTRR_ENABLE);\r
+ TempQword |= (UINT64)(B_EFI_MSR_GLOBAL_MTRR_ENABLE | B_EFI_MSR_FIXED_MTRR_ENABLE);\r
} else {\r
TempQword = OldMtrr;\r
}\r