KVM: x86 emulator: Use opcode::execute for Group 9 instruction

Group 9: 0F C7

Rename em_grp9() to em_cmpxchg8b() and register it.

Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp>
Signed-off-by: Avi Kivity <avi@redhat.com>
1 file changed