um: take arch/um/sys-x86 to arch/x86/um

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Richard Weinberger <richard@nod.at>

1 files changed, 21 insertions, 0 deletions

diff --git a/arch/x86/um/bug.c b/arch/x86/um/bug.c
new file mode 100644
index 000000000000..e8034e363d83
--- /dev/null
+++ b/arch/x86/um/bug.c
@@ -0,0 +1,21 @@
+/*
+ * Copyright (C) 2006 Jeff Dike (jdike@addtoit.com)
+ * Licensed under the GPL V2
+ */
+
+#include <linux/uaccess.h>
+
+/*
+ * Mostly copied from i386/x86_86 - eliminated the eip < PAGE_OFFSET because
+ * that's not relevant in skas mode.
+ */
+
+int is_valid_bugaddr(unsigned long eip)
+{
+        unsigned short ud2;
+
+        if (probe_kernel_address((unsigned short __user *)eip, ud2))
+                return 0;
+
+        return ud2 == 0x0b0f;
+}