asm-generic: siginfo: define ia64 si_codes unconditionally

Unlike system call numbers the assignment of si_codes has never had a
reason to be made per architecture.  Some architectures have had unique
conditions to report and reporting those conditions needed new si_codes.
Nothing has ever needed si_codes to have different values on different
architectures.  The si_code space is vast so even with defining all
si_codes on all architectures there is no danger in running out of
si_code values.

The history of the si_codes BUS_MCEERR_AR, BUS_MCEER_AO, SEGV_BNDERR,
and SEGV_PKUERR show that a need of one architecture frequently becomes
a need of another architecture which makes sharing si_codes between
architectures a positive benefit and something to be encouraged.

Where there are no conflicts with the historical ia64 arch specific
si_codes and any other si_codes make them generic si_codes.  We might
need them on another architecture someday.

This leaves only the good example of arch generic si_codes in the kernel
for future architectures and architecture enhancments to follow.
Without bad examples to follow it should be easy to avoid the mistakes
of the past.

Reported-by: Eric W. Biederman <ebiederm@xmission.com>
[arnd: took Eric's changelog text]
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

diff --git a/include/uapi/asm-generic/siginfo.h b/include/uapi/asm-generic/siginfo.h
index b2ebf16..ff13ed5 100644 (file)
--- a/include/uapi/asm-generic/siginfo.h
+++ b/include/uapi/asm-generic/siginfo.h
@@ -186,11 +186,9 @@ typedef struct siginfo {
 #define ILL_PRVREG     6       /* privileged register */
 #define ILL_COPROC     7       /* coprocessor error */
 #define ILL_BADSTK     8       /* internal stack error */
-#ifdef __ia64__
-# define ILL_BADIADDR  9       /* unimplemented instruction address */
-# define __ILL_BREAK   10      /* illegal break */
-# define __ILL_BNDMOD  11      /* bundle-update (modification) in progress */
-#endif
+#define ILL_BADIADDR   9       /* unimplemented instruction address */
+#define __ILL_BREAK    10      /* illegal break */
+#define __ILL_BNDMOD   11      /* bundle-update (modification) in progress */
 #define NSIGILL                11
 
 /*
@@ -204,13 +202,11 @@ typedef struct siginfo {
 #define FPE_FLTRES     6       /* floating point inexact result */
 #define FPE_FLTINV     7       /* floating point invalid operation */
 #define FPE_FLTSUB     8       /* subscript out of range */
-#ifdef __ia64__
-# define __FPE_DECOVF  9       /* decimal overflow */
-# define __FPE_DECDIV  10      /* decimal division by zero */
-# define __FPE_DECERR  11      /* packed decimal error */
-# define __FPE_INVASC  12      /* invalid ASCII digit */
-# define __FPE_INVDEC  13      /* invalid decimal digit */
-#endif
+#define __FPE_DECOVF   9       /* decimal overflow */
+#define __FPE_DECDIV   10      /* decimal division by zero */
+#define __FPE_DECERR   11      /* packed decimal error */
+#define __FPE_INVASC   12      /* invalid ASCII digit */
+#define __FPE_INVDEC   13      /* invalid decimal digit */
 #define NSIGFPE                13
 
 /*