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authorTejun Heo <tj@kernel.org>2010-01-04 19:17:33 -0500
committerTejun Heo <tj@kernel.org>2010-01-04 19:17:33 -0500
commit32032df6c2f6c9c6b2ada2ce42322231824f70c2 (patch)
treeb1ce838a37044bb38dfc128e2116ca35630e629a /arch/x86/mm/extable.c
parent22b737f4c75197372d64afc6ed1bccd58c00e549 (diff)
parentc5974b835a909ff15c3b7e6cf6789b5eb919f419 (diff)
Merge branch 'master' into percpu
Conflicts: arch/powerpc/platforms/pseries/hvCall.S include/linux/percpu.h
Diffstat (limited to 'arch/x86/mm/extable.c')
-rw-r--r--arch/x86/mm/extable.c31
1 files changed, 0 insertions, 31 deletions
diff --git a/arch/x86/mm/extable.c b/arch/x86/mm/extable.c
index 61b41ca3b5a2..d0474ad2a6e5 100644
--- a/arch/x86/mm/extable.c
+++ b/arch/x86/mm/extable.c
@@ -35,34 +35,3 @@ int fixup_exception(struct pt_regs *regs)
35 35
36 return 0; 36 return 0;
37} 37}
38
39#ifdef CONFIG_X86_64
40/*
41 * Need to defined our own search_extable on X86_64 to work around
42 * a B stepping K8 bug.
43 */
44const struct exception_table_entry *
45search_extable(const struct exception_table_entry *first,
46 const struct exception_table_entry *last,
47 unsigned long value)
48{
49 /* B stepping K8 bug */
50 if ((value >> 32) == 0)
51 value |= 0xffffffffUL << 32;
52
53 while (first <= last) {
54 const struct exception_table_entry *mid;
55 long diff;
56
57 mid = (last - first) / 2 + first;
58 diff = mid->insn - value;
59 if (diff == 0)
60 return mid;
61 else if (diff < 0)
62 first = mid+1;
63 else
64 last = mid-1;
65 }
66 return NULL;
67}
68#endif