On 2013-03-11 15:09, Gleb Natapov wrote: > On Mon, Mar 11, 2013 at 03:06:18PM +0100, Jan Kiszka wrote: >> On 2013-03-11 15:05, Gleb Natapov wrote: >>> On Mon, Mar 11, 2013 at 03:01:40PM +0100, Jan Kiszka wrote: >>>>> We are not moving away from mp_state, we are moving away from using >>>>> mp_state for signaling because with nested virt INIT does not always >>>>> change mp_state, not only that it can change mp_state long after signal >>>>> is received after vmx off is done. >>>> >>>> Right. >>>> >>>> BTW, for that to happen, we will also need to influence the INIT level. >>>> Unless I misread the spec, INIT is blocked while in root mode, and if >>>> you deassert INIT before leaving root (vmxoff, vmenter), nothing >>>> actually happens. So what matters is the INIT signal level at the exit >>>> of root mode. >>>> >>> You are talking about INIT# signal received via CPU pin, right? I think >>> INIT send by IPI cannot go away. >> >> Why shouldn't it? Besides edge, there is also level-triggered INIT. >> > OK, so level-triggered INIT can be de-asserted what about edge triggered > one? :) It should be lost while in root mode. Jan -- Siemens AG, Corporate Technology, CT RTC ITP SDP-DE Corporate Competence Center Embedded Linux -- 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
