Re: [PATCH] x86: kvm: reset the bootstrap processor when it gets an INIT

Gleb Natapov
2013-03-11T14:05:03Z

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.

--
Gleb.