Re: [PATCH RFC untested] kvm/x86: implement hv EOI assist

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On Sun, Apr 13, 2014 at 04:10:22PM +0300, Michael S. Tsirkin wrote:
> It seems that it's easy to implement the EOI assist
> on top of the PV EOI feature: simply convert the
> page address to the format expected by PV EOI.
> 
> Signed-off-by: Michael S. Tsirkin <mst@xxxxxxxxxx>

Looks alright except:

- There is no handling of PV EOI data to be performed at HV_X64_MSR_EOI write
path?
- Migration fails with PV-EOI not enabled in CPUID ? (perhaps could
  require it for PV-EOI over HV-APIC-ASSIST).
- MS docs mention "No EOI required" is set only if interrupt injected is edge
  triggered.

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