diff options
| author | Al Viro <viro@ftp.linux.org.uk> | 2011-08-18 20:06:39 +0100 |
|---|---|---|
| committer | Richard Weinberger <richard@nod.at> | 2011-11-02 14:15:05 +0100 |
| commit | 5c48b108ecbf6505d929e64d50dace13ac2bdf34 (patch) | |
| tree | 016904f84fbe05aa301c5cdfe712d90f6bb828fe /arch/x86/um/bug.c | |
| parent | 7bbe7204e93734fe79d8aac3e08a7cb4624b5004 (diff) | |
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>
Diffstat (limited to 'arch/x86/um/bug.c')
| -rw-r--r-- | arch/x86/um/bug.c | 21 |
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; +} |