diff options
| -rw-r--r-- | MdeModulePkg/Core/Dxe/Mem/Page.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/MdeModulePkg/Core/Dxe/Mem/Page.c b/MdeModulePkg/Core/Dxe/Mem/Page.c index 260a30a..3b3b9a8 100644 --- a/MdeModulePkg/Core/Dxe/Mem/Page.c +++ b/MdeModulePkg/Core/Dxe/Mem/Page.c @@ -755,6 +755,17 @@ CoreConvertPagesEx ( }
//
+ // If we are converting the type of the range from EfiConventionalMemory to
+ // another type, we have to ensure that the entire range is covered by a
+ // single entry.
+ //
+ if (ChangingType && (NewType != EfiConventionalMemory)) {
+ if (Entry->End < End) {
+ DEBUG ((DEBUG_ERROR | DEBUG_PAGE, "ConvertPages: range %lx - %lx covers multiple entries\n", Start, End));
+ return EFI_NOT_FOUND;
+ }
+ }
+ //
// Convert range to the end, or to the end of the descriptor
// if that's all we've got
//
|