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| author | James Morris <jmorris@namei.org> | 2011-11-16 12:39:48 +1100 |
|---|---|---|
| committer | James Morris <jmorris@namei.org> | 2011-11-16 12:39:48 +1100 |
| commit | 24942c8e5cc8696064ee207ff29d4cf21f70dafc (patch) | |
| tree | 08a8221eb72ec3da7746d7d76f6f5915ce77cde7 /arch/x86/kernel/kprobes.c | |
| parent | e163bc8e4a0cd1cdffadb58253f7651201722d56 (diff) | |
| parent | ff0ff78068dd8a962358dbbdafa9d6f24540d3e5 (diff) | |
| download | linux-stable-24942c8e5cc8696064ee207ff29d4cf21f70dafc.tar.gz linux-stable-24942c8e5cc8696064ee207ff29d4cf21f70dafc.tar.bz2 linux-stable-24942c8e5cc8696064ee207ff29d4cf21f70dafc.zip | |
Merge branch 'master'; commit 'v3.2-rc2' into next
Diffstat (limited to 'arch/x86/kernel/kprobes.c')
| -rw-r--r-- | arch/x86/kernel/kprobes.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/x86/kernel/kprobes.c b/arch/x86/kernel/kprobes.c index f1a6244d7d93..7da647d8b64c 100644 --- a/arch/x86/kernel/kprobes.c +++ b/arch/x86/kernel/kprobes.c @@ -75,8 +75,11 @@ DEFINE_PER_CPU(struct kprobe_ctlblk, kprobe_ctlblk); /* * Undefined/reserved opcodes, conditional jump, Opcode Extension * Groups, and some special opcodes can not boost. + * This is non-const and volatile to keep gcc from statically + * optimizing it out, as variable_test_bit makes gcc think only + * *(unsigned long*) is used. */ -static const u32 twobyte_is_boostable[256 / 32] = { +static volatile u32 twobyte_is_boostable[256 / 32] = { /* 0 1 2 3 4 5 6 7 8 9 a b c d e f */ /* ---------------------------------------------- */ W(0x00, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0, 0, 0, 0, 0, 0) | /* 00 */ |