diff options
Diffstat (limited to 'MdeModulePkg/Core/Dxe/Mem/HeapGuard.h')
| -rw-r--r-- | MdeModulePkg/Core/Dxe/Mem/HeapGuard.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/MdeModulePkg/Core/Dxe/Mem/HeapGuard.h b/MdeModulePkg/Core/Dxe/Mem/HeapGuard.h index 24b4206c0e..578e857465 100644 --- a/MdeModulePkg/Core/Dxe/Mem/HeapGuard.h +++ b/MdeModulePkg/Core/Dxe/Mem/HeapGuard.h @@ -469,4 +469,18 @@ PromoteGuardedFreePages ( extern BOOLEAN mOnGuarding;
+//
+// The heap guard system does not support non-EFI_PAGE_SIZE alignments.
+// Architectures that require larger RUNTIME_PAGE_ALLOCATION_GRANULARITY
+// cannot have EfiRuntimeServicesCode, EfiRuntimeServicesData, EfiReservedMemoryType,
+// and EfiACPIMemoryNVS guarded. OSes do not map guard pages anyway, so this is a
+// minimal loss. Not guarding prevents alignment mismatches
+//
+STATIC_ASSERT (
+ RUNTIME_PAGE_ALLOCATION_GRANULARITY == EFI_PAGE_SIZE ||
+ (((FixedPcdGet64 (PcdHeapGuardPageType) & 0x461) == 0) &&
+ ((FixedPcdGet64 (PcdHeapGuardPoolType) & 0x461) == 0)),
+ "Unsupported Heap Guard configuration on system with greater than EFI_PAGE_SIZE RUNTIME_PAGE_ALLOCATION_GRANULARITY"
+ );
+
#endif
|