diff options
| -rw-r--r-- | MdeModulePkg/Core/PiSmmCore/Page.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/MdeModulePkg/Core/PiSmmCore/Page.c b/MdeModulePkg/Core/PiSmmCore/Page.c index ec4dd4fcb8..781707e244 100644 --- a/MdeModulePkg/Core/PiSmmCore/Page.c +++ b/MdeModulePkg/Core/PiSmmCore/Page.c @@ -312,6 +312,16 @@ SmmAddMemoryRegion ( {
UINTN AlignedMemBase;
+ //
+ // Do not add memory regions that is already allocated, needs testing, or needs ECC initialization
+ //
+ if ((Attributes & (EFI_ALLOCATED | EFI_NEEDS_TESTING | EFI_NEEDS_ECC_INITIALIZATION)) != 0) {
+ return;
+ }
+
+ //
+ // Align range on an EFI_PAGE_SIZE boundary
+ //
AlignedMemBase = (UINTN)(MemBase + EFI_PAGE_MASK) & ~EFI_PAGE_MASK;
MemLength -= AlignedMemBase - MemBase;
SmmFreePages (AlignedMemBase, TRUNCATE_TO_PAGES ((UINTN)MemLength));
|