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SubjectRe: [PATCH v3] enable x2APIC without interrupt remapping under KVM
On 06/30/2009 07:44 PM, Eric W. Biederman wrote:
>>> To support that seriously you need interrupt remapping.
>> Can you explain why?
> Because ioapics don't fully function according to spec,
> and the interrupt code on the hotplug path is a horrible
> terrible broken hack for ioapics.
> It is better than nothing but it certainly is not something
> I would expect to work all of the time.

Can you elaborate? For kvm guests, the hardware is reasonably will
implemented and if not we will fix it. We need not cripple a feature
just because some hardware is broken.

I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.

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