[PATCH V2 4/5] kvm/stats: Add provisioning for 64-bit vcpu statistics

[Paolo Bonzini]

On 13/07/2016 20:00, Christian Borntraeger wrote:
>>> >> I thought u64 still existed on 32-bit architectures. unsigned long
>>> >> would be fine but with the caveat that certain stats would overflow on
>>> >> 32-bit architectures.
>> > 
>> > Yes, but not all 32-bit architectures can do atomic read-modify-write
>> > (e.g. add) operations on 64-bit values.
> So what about only doing it for the VCPU events? Those should be only
> modified by one CPU. We would have some odd values on 32bit overflow, but
> this will be certainly better than just start with 0

If that's good enough for PPC, that's fine.

Paolo