On Mon, Dec 06, 2010 at 08:08:08AM -0600, Anthony Liguori wrote: > On 12/06/2010 08:02 AM, Avi Kivity wrote: > >On 12/06/2010 04:01 PM, Avi Kivity wrote: > >>>It's not just possible, it appears to be exactly what happens. > >>> > >>>I guess it makes sense that RIP gets advanced before HLT > >>>begins to wait. > >>> > >> > >> > >>It does. Good, it simplifies the patch. > >> > > > >btw, this is how kvm emulates HLT - first we advance rip, then we > >sleep the vcpu. > > Yes, I assume the hardware updates RIP immediately after fetching > the instruction. That's at least how some simpler architectures I'm > aware of work. > By "simpler" you mean "saner"? x86 needs at least decode it before updating RIP :) -- 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
