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authorKhalid Aziz <khalid.aziz@oracle.com>2018-02-21 10:15:43 -0700
committerDavid S. Miller <davem@davemloft.net>2018-03-18 07:38:45 -0700
commitd84bb709aa4a6a155b1aaaf449cad21f02be4594 (patch)
tree15c882c521fc6b505ba576914ee626f5f09ffa6d /include/uapi/asm-generic
parent8f5fd927c3a7576d57248a2d7a0861c3f2795973 (diff)
signals, sparc: Add signal codes for ADI violations
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> Reviewed-by: Anthony Yznaga <anthony.yznaga@oracle.com> Acked-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/uapi/asm-generic')
-rw-r--r--include/uapi/asm-generic/siginfo.h5
1 files changed, 4 insertions, 1 deletions
diff --git a/include/uapi/asm-generic/siginfo.h b/include/uapi/asm-generic/siginfo.h
index 99c902e460c2..a01fd0a92b1b 100644
--- a/include/uapi/asm-generic/siginfo.h
+++ b/include/uapi/asm-generic/siginfo.h
@@ -246,7 +246,10 @@ typedef struct siginfo {
#else
# define SEGV_PKUERR 4 /* failed protection key checks */
#endif
-#define NSIGSEGV 4
+#define SEGV_ACCADI 5 /* ADI not enabled for mapped object */
+#define SEGV_ADIDERR 6 /* Disrupting MCD error */
+#define SEGV_ADIPERR 7 /* Precise MCD exception */
+#define NSIGSEGV 7
/*
* SIGBUS si_codes