Re: VMX: Host NMI triggering on NMI vmexit

[Avi Kivity <avi@redhat.com>]

Jan Kiszka wrote:
>> Maybe the answer is to generate the local nmi via an IPI-to-self command
>> to the local apic.
>>     
>
> Going this way leaves me with a few questions: Will it be OK for the
> related mainainers to export the required service? 

If we can make a case for it (I think we can), then I don't see why not.

Sheng, can you confirm that 'int 2' is problematic, and that 
nmi-via-lapic is the best workaround?

> And is it safe to
> assume VMX == LAPIC available and usable?
>
>   

Yes.

> However, this is how it would look like. 

I'd define a send_nmi_self() instead, to allow the implementation to 
change (x2apic/etc).

> Yet untested, /me has to
> replace his host kernel first...
>   

You could test it in a VM, if someone implements nested vmx :)

btw, looks like svm is not affected by this.

-- 
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