Re: [PATCH] Fix writing back APIC reset to inkernel APIC

[Avi Kivity <avi-atKUWr5tajBWk0Htik3J/w@public.gmane.org>]

Dong, Eddie wrote:
> Avi Kivity wrote:
>   
>> Dong, Eddie wrote:
>>     
>>> Yes, when reseting, we need to reset both APIC/PIC/IOAPIC and pv
>>> driver in future, and also VCPU.
>>> But isn't apic_reset a pure user level APIC thing?
>>>       
>> The reset callbacks are still called, so the userspace apic is
>> still reset.
>>     
>
> OK. But since we have seperate kernel reset, doing double reset here
> means
> something weir to me.
>
>   
We can detect KVM_CAP_RESET and avoid it.

> Maybe you just want to live with a pure apic reset only, then I am ok
> too.
> Once we established one ABI, probably we won't establish another set, do
> we?
>
>   

No we have too many ABIs already.  But userspace reset is via an 
existing ABI.

-- 
Any sufficiently difficult bug is indistinguishable from a feature.


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