RE: [PATCH v3 2/4] KVM: x86: Use vector-hashing to deliver lowest-priority interrupts

[Wu, Feng]

> -----Original Message-----
> From: Yang Zhang [mailto:yang.zhang.wz@xxxxxxxxx]
> Sent: Thursday, January 21, 2016 1:58 PM
> To: Wu, Feng <feng.wu@xxxxxxxxx>; pbonzini@xxxxxxxxxx;
> rkrcmar@xxxxxxxxxx
> Cc: linux-kernel@xxxxxxxxxxxxxxx; kvm@xxxxxxxxxxxxxxx
> Subject: Re: [PATCH v3 2/4] KVM: x86: Use vector-hashing to deliver lowest-
> priority interrupts
> 
> >>
> >> I remember we have discussed that even the LAPIC is software disabled,
> >> it still can respond to some interrupts like INIT, NMI, SMI, and SIPI
> >> messages. Isn't current logic still problematically?
> >
> > I don't think there are problems, here we only cover lowest-priority mode.
> 
> Does Intel SDM said those interrupts cannot be delivered on
> lowest-priority mode?

Fixed, Lowest-priority, SMI, NMI, INIT are all "Delivery Mode", once it is
Lowest-priority, it cannot be other type, afaik.

Thanks,
Feng

> 
> CC Jun.
> 
> Hi Jun,
> 
> Do you know whether INIT, NMI, SMI, and SIPI can be delivered through
> lowest-priority mode? I didn't find SDM says no.
> 
> --
> best regards
> yang