diff options
Diffstat (limited to 'UefiCpuPkg/Library/MtrrLib/MtrrLib.c')
| -rw-r--r-- | UefiCpuPkg/Library/MtrrLib/MtrrLib.c | 14 |
1 files changed, 3 insertions, 11 deletions
diff --git a/UefiCpuPkg/Library/MtrrLib/MtrrLib.c b/UefiCpuPkg/Library/MtrrLib/MtrrLib.c index 609aca5c3e..06a361bd84 100644 --- a/UefiCpuPkg/Library/MtrrLib/MtrrLib.c +++ b/UefiCpuPkg/Library/MtrrLib/MtrrLib.c @@ -486,18 +486,10 @@ ProgramFixedMtrr ( //
// We found the fixed MTRR to be programmed
//
- for (ByteShift = 0; ByteShift < 8; ByteShift++) {
- if (*Base ==
- (
- mMtrrLibFixedMtrrTable[MsrNum].BaseAddress +
- (ByteShift * mMtrrLibFixedMtrrTable[MsrNum].Length)
- )
- ) {
- break;
- }
- }
+ ByteShift = ((UINT32)*Base - mMtrrLibFixedMtrrTable[MsrNum].BaseAddress)
+ / mMtrrLibFixedMtrrTable[MsrNum].Length;
- if (ByteShift == 8) {
+ if (ByteShift >= 8) {
return RETURN_UNSUPPORTED;
}
|