Re: [PATCH 1/2] KVM: x86: set TMR when the interrupt is accepted

[Paolo Bonzini]

On 13/08/2015 08:35, Zhang, Yang Z wrote:
>> You may be right. It is safe if no future hardware plans to use
>> it. Let me check with our hardware team to see whether it will be
>> used or not in future.
> 
> After checking with Jun, there is no guarantee that the guest running
> on another CPU will operate properly if hypervisor modify the vTMR
> from another CPU. So the hypervisor should not to do it.

I guess I can cause a vmexit on level-triggered interrupts, it's not a
big deal, but no weasel words, please.

What's going to break, and where is it documented?

Paolo
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