On 28.8.2010 18.41, Julia Lawall wrote:
The opcodes 0x2e and 0x3e are tested for in the first Group 2 line as well. The sematic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) //<smpl> @expression@ expression E; @@ ( * E || ... || E | * E && ...&& E ) //</smpl> Signed-off-by: Julia Lawall<julia@xxxxxxx> --- This is a guess as to what the code should be. Perhaps something else should have been tested instead.
The last two items are branch hint prefixes that use same encoding as CS and DS segment override prefixes.
Reviewed-by: Pekka Enberg <penberg@xxxxxxxxxx> Can you pick this up in the x86.git tree, please?
arch/x86/mm/kmemcheck/opcode.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/mm/kmemcheck/opcode.c b/arch/x86/mm/kmemcheck/opcode.c index 63c19e2..324aa3f 100644 --- a/arch/x86/mm/kmemcheck/opcode.c +++ b/arch/x86/mm/kmemcheck/opcode.c @@ -9,7 +9,7 @@ static bool opcode_is_prefix(uint8_t b) b == 0xf0 || b == 0xf2 || b == 0xf3 /* Group 2 */ || b == 0x2e || b == 0x36 || b == 0x3e || b == 0x26 - || b == 0x64 || b == 0x65 || b == 0x2e || b == 0x3e + || b == 0x64 || b == 0x65 /* Group 3 */ || b == 0x66 /* Group 4 */
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