Paolo Bonzini <pbonzini@xxxxxxxxxx> writes: > 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. > I'm not saying my suggestion was a good idea but honestly I'm failing to wrap my head around this. The suggested 'RMODE_HOST_OWNED_EFLAGS_BITS' would just be a define for (X86_EFLAGS_IOPL | X86_EFLAGS_VM) so technically the patch would just be nop, no? -- Vitaly