[PATCH RESEND 1/1] X86: Handle Hyper-V vmbus interrupts as special hypervisor interrupts

[H. Peter Anvin]

Can't you discover Xen emulation by looking for Xen first?  Or does Xen go "stealth"?

Olaf Hering <olaf at aepfle.de> wrote:

>On Thu, Jan 24, KY Srinivasan wrote:
>
>
>> > Question is - considering you stated that this is supported
>> > starting in Win8, doesn't Hyper-V itself announce that
>> > capability in some explicit way?
>> 
>> Thanks Jan. Unfortunately I don't think tis interrupt delivery model
>> is specified via a "feature" bit (I will check with the Windows
>guys).
>> Perhaps, we can have a Hyper-V specific compilation switch to address
>> the Xen emulation issue.
>
>Would that really help if both pvops XEN_PVHVM and HYPERV are enabled
>in
>the config? I assume at this point the access to the DMI data is not
>yet
>possible.
>
>Olaf

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