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Update PI SMM Core to ignore memory ranges from SMRAM Descriptors that are already allocated or not tested or not ECC initialized yet 

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10132 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
mdkinney 2010-03-01 05:32:59 +00:00
parent 3c5963cf29
commit 3df4b6e7e9
1 changed files with 10 additions and 0 deletions
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10
MdeModulePkg/Core/PiSmmCore/Page.c
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@ -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));