Merge branch 'devel-map-io' into omap-for-linus

1 files changed, 14 insertions, 2 deletions

diff --git a/arch/arm/mm/alignment.c b/arch/arm/mm/alignment.c
index 6f98c358989a..d073b64ae87e 100644
--- a/arch/arm/mm/alignment.c
+++ b/arch/arm/mm/alignment.c
@@ -924,8 +924,20 @@ static int __init alignment_init(void)
 		ai_usermode = UM_FIXUP;
 	}
 
-	hook_fault_code(1, do_alignment, SIGILL, "alignment exception");
-	hook_fault_code(3, do_alignment, SIGILL, "alignment exception");
+	hook_fault_code(1, do_alignment, SIGBUS, BUS_ADRALN,
+			"alignment exception");
+
+	/*
+	 * ARMv6K and ARMv7 use fault status 3 (0b00011) as Access Flag section
+	 * fault, not as alignment error.
+	 *
+	 * TODO: handle ARMv6K properly. Runtime check for 'K' extension is
+	 * needed.
+	 */
+	if (cpu_architecture() <= CPU_ARCH_ARMv6) {
+		hook_fault_code(3, do_alignment, SIGBUS, BUS_ADRALN,
+				"alignment exception");
+	}
 
 	return 0;
 }