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authorJohn W. Linville <linville@tuxdriver.com>2011-11-22 14:05:46 -0500
committerJohn W. Linville <linville@tuxdriver.com>2011-11-22 14:05:46 -0500
commit515db09338704a6ad7d27b5f1e33820d3052edd2 (patch)
tree74f915531710303397d34069b325c2be7a5ac93c /arch/x86/um/fault.c
parent30be52e44fd4276d768efffb55d424fb682e6505 (diff)
parentcfcfc9eca2bcbd26a8e206baeb005b055dbf8e37 (diff)
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux
Conflicts: drivers/net/wireless/iwlegacy/iwl-debugfs.c drivers/net/wireless/iwlegacy/iwl-rx.c drivers/net/wireless/iwlegacy/iwl-scan.c drivers/net/wireless/iwlegacy/iwl-tx.c include/net/bluetooth/bluetooth.h
Diffstat (limited to 'arch/x86/um/fault.c')
-rw-r--r--arch/x86/um/fault.c28
1 files changed, 28 insertions, 0 deletions
diff --git a/arch/x86/um/fault.c b/arch/x86/um/fault.c
new file mode 100644
index 000000000000..d670f68532f4
--- /dev/null
+++ b/arch/x86/um/fault.c
@@ -0,0 +1,28 @@
+/*
+ * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
+ * Licensed under the GPL
+ */
+
+#include "sysdep/ptrace.h"
+
+/* These two are from asm-um/uaccess.h and linux/module.h, check them. */
+struct exception_table_entry
+{
+ unsigned long insn;
+ unsigned long fixup;
+};
+
+const struct exception_table_entry *search_exception_tables(unsigned long add);
+
+/* Compare this to arch/i386/mm/extable.c:fixup_exception() */
+int arch_fixup(unsigned long address, struct uml_pt_regs *regs)
+{
+ const struct exception_table_entry *fixup;
+
+ fixup = search_exception_tables(address);
+ if (fixup != 0) {
+ UPT_IP(regs) = fixup->fixup;
+ return 1;
+ }
+ return 0;
+}