[PATCH v5 00/16] KVM: PPC: Book3S HV: add XIVE native exploitation mode

[Cédric Le Goater]

Satheesh,

>> Xive(both ic-mode=dual and ic-mode=xive) guest fails to boot with 
>> guest memory > 64G, till 64G it boots fine.
>>
>> Note: xics(ic-mode=xics) guest with the same configuration boots fine
> 
> Indeed. The guest hangs because IPIs are not correctly received. The guest 
> sees the EQ page as being filled with zeroes and discards the interrupt 
> whereas the host, KVM and QEMU, sees the correct entries.
> 
> I haven't spotted anything bizarre from guest side. Do we have a 64GB 
> frontier somewhere in KVM ? 

The issue was an erroneous assignment of the EQ page address in QEMU.

I pushed the fix in my QEMU branch : 

  https://github.com/legoater/qemu/commits/xive-next

Thanks,

C.