commit 84f4fc524eed040660bd4ebc8cba259d8afe8461
author H. Peter Anvin <hpa@zytor.com> Wed Apr 18 17:16:47 2012 -0700
committer H. Peter Anvin <hpa@linux.intel.com> Thu Apr 19 15:07:49 2012 -0700
tree 887728e36e36a2596e846536c86ebac868ca08cc
parent 46326013e34eb5c178a91f06c1f2e99e79eed924

x86: Add symbolic constant for exceptions with error code

Add a symbolic constant for the bitmask which states which exceptions
carry an error code.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Link: http://lkml.kernel.org/r/1334794610-5546-3-git-send-email-hpa@zytor.com

arch/x86/include/asm/segment.h

diff --git a/arch/x86/include/asm/segment.h b/arch/x86/include/asm/segment.h
index 1654662..58c1e6c 100644
--- a/arch/x86/include/asm/segment.h
+++ b/arch/x86/include/asm/segment.h
@@ -205,6 +205,8 @@
 
 #define IDT_ENTRIES 256
 #define NUM_EXCEPTION_VECTORS 32
+/* Bitmask of exception vectors which push an error code on the stack */
+#define EXCEPTION_ERRCODE_MASK  0x00027d00
 #define GDT_SIZE (GDT_ENTRIES * 8)
 #define GDT_ENTRY_TLS_ENTRIES 3
 #define TLS_SIZE (GDT_ENTRY_TLS_ENTRIES * 8)