Files
system76-edk2/UefiCpuPkg/Library
Ruiyu Ni 86cabbcfa0 UefiCpuPkg/MtrrLib: Fix bug that may incorrectly set <1MB attribute
MtrrLibSetBelow1MBMemoryAttribute() may be called multiple times.
It's possible that in a 2nd call, Modified[0] is set to TRUE in
1st call but ClearMasks[0] and OrMasks[0] is uninitialized in
2nd call. It causes FixedSettings->Mtrr[0] be set to random
data.

The patch fixes this issue by introducing a local Modified[]
array and only updates FixedSettings->Mtrr[] when LocalModified[i]
is TRUE.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com>
Reviewed-by: Hao A Wu <hao.a.wu@intel.com>
2017-10-20 12:52:08 +08:00
..
2017-09-05 13:03:22 +08:00
2017-09-05 13:03:22 +08:00