diff options
Diffstat (limited to 'IntelSiliconPkg')
| -rw-r--r-- | IntelSiliconPkg/Feature/VTd/IntelVTdDxe/TranslationTable.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/IntelSiliconPkg/Feature/VTd/IntelVTdDxe/TranslationTable.c b/IntelSiliconPkg/Feature/VTd/IntelVTdDxe/TranslationTable.c index cecb5d23ef..7bdc4a5146 100644 --- a/IntelSiliconPkg/Feature/VTd/IntelVTdDxe/TranslationTable.c +++ b/IntelSiliconPkg/Feature/VTd/IntelVTdDxe/TranslationTable.c @@ -286,9 +286,13 @@ CreateSecondLevelPagingEntry ( if (SecondLevelPagingEntry == NULL) {
return NULL;
}
- SecondLevelPagingEntry = CreateSecondLevelPagingEntryTable (VtdIndex, SecondLevelPagingEntry, SIZE_4GB, mAbove4GMemoryLimit, IoMmuAccess);
- if (SecondLevelPagingEntry == NULL) {
- return NULL;
+
+ if (mAbove4GMemoryLimit != 0) {
+ ASSERT (mAbove4GMemoryLimit > BASE_4GB);
+ SecondLevelPagingEntry = CreateSecondLevelPagingEntryTable (VtdIndex, SecondLevelPagingEntry, SIZE_4GB, mAbove4GMemoryLimit, IoMmuAccess);
+ if (SecondLevelPagingEntry == NULL) {
+ return NULL;
+ }
}
return SecondLevelPagingEntry;
|