On Tue, Mar 09, 2010 at 04:24:45PM +0200, Avi Kivity wrote: > On 03/09/2010 04:09 PM, Gleb Natapov wrote: > >Eliminate the need to call back into KVM to get it from emulator. > > > > > >@@ -3499,6 +3499,7 @@ int emulate_instruction(struct kvm_vcpu *vcpu, > > > > vcpu->arch.emulate_ctxt.vcpu = vcpu; > > vcpu->arch.emulate_ctxt.eflags = kvm_x86_ops->get_rflags(vcpu); > >+ vcpu->arch.emulate_ctxt.cpl = kvm_x86_ops->get_cpl(vcpu); > > vcpu->arch.emulate_ctxt.mode = > > (!is_protmode(vcpu)) ? X86EMUL_MODE_REAL : > > (vcpu->arch.emulate_ctxt.eflags& X86_EFLAGS_VM) > > This is an unconditional VMREAD, which is slow (extra slow if > nested). Most common emulator ops do not need the cpl. > Will have to make it one of x86_emulate_ops callback then. -- Gleb. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
