---

yaml --- r: 201487 b: refs/heads/master c: b8ab539 h: refs/heads/master i: 201485: 5a107e5 201483: 6b257e6 201479: 4b34b57 201471: a90e296 v: v3
git-mirror · Jul 27, 2010 · 27b2dbb · 27b2dbb
1 parent 42842ec
commit 27b2dbb
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Showing 3 changed files with 24 additions and 3 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 993bf4ec8c2a2b7979389ab196bf2fe217117158
+refs/heads/master: b8ab5397bcbd92e3fd4a9770e0bf59315fa38dab
diff --git a/trunk/arch/arm/mm/alignment.c b/trunk/arch/arm/mm/alignment.c
@@ -926,8 +926,18 @@ static int __init alignment_init(void)
 
 	hook_fault_code(1, do_alignment, SIGBUS, BUS_ADRALN,
 			"alignment exception");
-	hook_fault_code(3, 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;
 }

diff --git a/trunk/arch/arm/mm/fault.c b/trunk/arch/arm/mm/fault.c
@@ -607,6 +607,17 @@ static int __init exceptions_init(void)
 				"I-cache maintenance fault");
 	}
 
+	if (cpu_architecture() >= CPU_ARCH_ARMv7) {
+		/*
+		 * TODO: Access flag faults introduced in ARMv6K.
+		 * Runtime check for 'K' extension is needed
+		 */
+		hook_fault_code(3, do_bad, SIGSEGV, SEGV_MAPERR,
+				"section access flag fault");
+		hook_fault_code(6, do_bad, SIGSEGV, SEGV_MAPERR,
+				"section access flag fault");
+	}
+
 	return 0;
 }