On 06/03/20 03:17, linmiaohe wrote: > Define a macro RMODE_HOST_OWNED_EFLAGS_BITS for (X86_EFLAGS_IOPL | > X86_EFLAGS_VM) as suggested by Vitaly seems a good way to fix this ? > Thanks. No, what if a host-owned flag was zero? I'd just leave it as is. Paolo