IntelFrameworkModulePkg: update comments to clarify runtime memory usage for legacy OS.

[mirror_edk2.git] / IntelFrameworkModulePkg / Csm / LegacyBiosDxe / LegacyBootSupport.c

diff --git a/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyBootSupport.c b/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyBootSupport.c
index 5575d2ec8eb9f8907eded90a2df1b4ff1cacc792..5848f9f164a8f8f441458d04f6ff349c7f6c6992 100644 (file)
--- a/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyBootSupport.c
+++ b/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyBootSupport.c
@@ -1615,7 +1615,7 @@ EfiMemoryTypeToE820Type (
   case EfiConventionalMemory:\r
   //\r
   // The memory of EfiRuntimeServicesCode and EfiRuntimeServicesData are\r
-  // usable memory for legacy OS.\r
+  // usable memory for legacy OS, because legacy OS is not aware of EFI runtime concept.\r
   // In ACPI specification, EfiRuntimeServiceCode and EfiRuntimeServiceData\r
   // should be mapped to AddressRangeReserved. This statement is for UEFI OS, not for legacy OS.\r
   //\r