x86: documentation fix regarding boot protocol

Impact: clarify documentation Documentation/x86/boot.txt describes payload_offset as the offset from the end of the real-mode code. In fact, it is more accurately described as the offset from the beginning of the protected-mode code, as (a) this is how it is actually calculated and (b) the padding after the real-mode code is not included in the offset. Signed-off-by: Philipp Kohlbecher <[email protected]> Acked-by: Ian Campbell <[email protected]> Acked-by: H. Peter Anvin <[email protected]> Signed-off-by: Ingo Molnar <[email protected]>
chewitt · Dec 16, 2008 · e1286f2 · e1286f2
1 parent 78f902c
commit e1286f2
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/Documentation/x86/boot.txt b/Documentation/x86/boot.txt
@@ -537,8 +537,8 @@ Type:		read
 Offset/size:	0x248/4
 Protocol:	2.08+
 
-  If non-zero then this field contains the offset from the end of the
-  real-mode code to the payload.
+  If non-zero then this field contains the offset from the beginning
+  of the protected-mode code to the payload.
 
   The payload may be compressed. The format of both the compressed and
   uncompressed data should be determined using the standard magic