Re: [PATCH v8 03/13] KVM: Define a new interface kvm_intr_is_single_vcpu()

[Radim KrÄmÃÅ]

2015-09-17 23:18+0000, Wu, Feng:
>> From: Paolo Bonzini [mailto:pbonzini@xxxxxxxxxx]
>> On 17/09/2015 17:58, Radim KrÄmÃÅ wrote:
>>> xAPIC address are only 8 bit long so they always get delivered to x2APIC
>>> cluster 0, where first 16 bits work like xAPIC flat logical mode.
>> 
>> Ok, I was wondering whether this was the correct interpretation.  Thanks!
> 
> Paolo, I don't think Radim clarify your concern, right? Since mda is 8-bit, it
> is wrong with mda >> 16, this is your concern, right?

In case it was:  mda is u32 so the bitshift is defined by C.
(xAPIC destinations in KVM's x2APIC mode are stored in lowest 8 bits of
 mda, hence the cluster is always 0.)

Or am I still missing the point?
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