1 files changed, 7 insertions, 4 deletions
diff --git a/MdePkg/Library/BaseCacheMaintenanceLib/x86Cache.c b/MdePkg/Library/BaseCacheMaintenanceLib/x86Cache.c
index 7e744698e3..1fc2b95daa 100644
--- a/MdePkg/Library/BaseCacheMaintenanceLib/x86Cache.c
+++ b/MdePkg/Library/BaseCacheMaintenanceLib/x86Cache.c
@@ -64,7 +64,7 @@ InvalidateInstructionCache (
 
   @param  Length  The number of bytes to invalidate from the instruction cache.
 
-  @return Address
+  @return Address of cache invalidation.
 
 **/
 VOID *
@@ -120,7 +120,7 @@ WriteBackInvalidateDataCache (
   @param  Length  The number of bytes to write back and invalidate from the
                   data cache.
 
-  @return Address
+  @return Address of cache invalidation.
 
 **/
 VOID *
@@ -139,6 +139,9 @@ WriteBackInvalidateDataCacheRange (
   }
 
   Start = (UINTN)Address;
+  //
+  // Calculate the cache line alignment
+  // 
   End = (Start + Length + (CACHE_LINE_SIZE - 1)) & ~(CACHE_LINE_SIZE - 1);
   Start &= ~(CACHE_LINE_SIZE - 1);
 
@@ -189,7 +192,7 @@ WriteBackDataCache (
                   mode, then Address is a virtual address.
   @param  Length  The number of bytes to write back from the data cache.
 
-  @return Address
+  @return Address of cache wrote in main memory.
 
 **/
 VOID *
@@ -246,7 +249,7 @@ InvalidateDataCache (
                   then Address is a virtual address.
   @param  Length  The number of bytes to invalidate from the data cache.
 
-  @return Address
+  @return Address of cache invalidation.
 
 **/
 VOID *