RE: [PATCH v2 1/2] KVM: x86: Use vector-hashing to deliver lowest-priority interrupts

[Wu, Feng]

> -----Original Message-----
> From: linux-kernel-owner@xxxxxxxxxxxxxxx [mailto:linux-kernel-
> owner@xxxxxxxxxxxxxxx] On Behalf Of Paolo Bonzini
> Sent: Tuesday, January 19, 2016 9:43 PM
> To: Wu, Feng <feng.wu@xxxxxxxxx>; Radim Krcmár <rkrcmar@xxxxxxxxxx>
> Cc: kvm@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx
> Subject: Re: [PATCH v2 1/2] KVM: x86: Use vector-hashing to deliver lowest-
> priority interrupts
> 
> 
> 
> On 19/01/2016 05:44, Wu, Feng wrote:
> > > I think Radim's suggestion is fine.  You can print an error (just once
> > > per guest) to dmesg if the result of the hashing computation corresponds
> > > to a disabled APIC.
> >
> > Good idea, is there already a convenient way to do this in KVM?
> 
> No, you can just use something like the definition of printk_once (in
> include/linux/printk.h), but with a flag in struct kvm_arch.

Yes, that is a possible solution, if you don't think adding a flag in struct
kvm_arch is not too overkill, I am fine with this. :)

Thanks,
Feng