@@ -26,7 +26,7 @@ static inline void signal_compat_build_tests(void)
*/
BUILD_BUG_ON(NSIGILL != 8);
BUILD_BUG_ON(NSIGFPE != 8);
- BUILD_BUG_ON(NSIGSEGV != 4);
+ BUILD_BUG_ON(NSIGSEGV != 7);
BUILD_BUG_ON(NSIGBUS != 5);
BUILD_BUG_ON(NSIGTRAP != 4);
BUILD_BUG_ON(NSIGCHLD != 6);
@@ -224,7 +224,10 @@ typedef struct siginfo {
#define SEGV_ACCERR (__SI_FAULT|2) /* invalid permissions for mapped object */
#define SEGV_BNDERR (__SI_FAULT|3) /* failed address bound checks */
#define SEGV_PKUERR (__SI_FAULT|4) /* failed protection key checks */
-#define NSIGSEGV 4
+#define SEGV_ACCADI (__SI_FAULT|5) /* ADI not enabled for mapped object */
+#define SEGV_ADIDERR (__SI_FAULT|6) /* Disrupting MCD error */
+#define SEGV_ADIPERR (__SI_FAULT|7) /* Precise MCD exception */
+#define NSIGSEGV 7
/*
* SIGBUS si_codes
SPARC M7 processor introduces a new feature - Application Data Integrity (ADI). ADI allows MMU to catch rogue accesses to memory. When a rogue access occurs, MMU blocks the access and raises an exception. In response to the exception, kernel sends the offending task a SIGSEGV with si_code that indicates the nature of exception. This patch adds three new signal codes specific to ADI feature: 1. ADI is not enabled for the address and task attempted to access memory using ADI 2. Task attempted to access memory using wrong ADI tag and caused a deferred exception. 3. Task attempted to access memory using wrong ADI tag and caused a precise exception. Signed-off-by: Khalid Aziz <khalid.aziz@oracle.com> Cc: Khalid Aziz <khalid@gonehiking.org> --- arch/x86/kernel/signal_compat.c | 2 +- include/uapi/asm-generic/siginfo.h | 5 ++++- 2 files changed, 5 insertions(+), 2 deletions(-)