[PATCH v9 6/6] KVM: arm64: Expose new KVM cap for cacheable PFNMAP
Ankit Agrawal
ankita at nvidia.com
Fri Jul 4 09:20:07 PDT 2025
Thanks Jason and David for reviewing the patch!
>> >
>> > I don't know if any VMM will ever use this, but it looks OK
>>
>> So, should we defer it to the point where we actually have a use case?
>>
>> I mean, patch #4 could be simplified by modifying arm64 code in patch #5
>> only. No need for a common kvm_arch function etc.
>
> IDK, I think Marc and Oliver are right it makes sense to have it, I
> just don't really see how a VMM would make use of it..
>
> Jason
Right, it was also pointed out that the VMM could make use of it
for early termination during VM migration between incompatible
systems (i.e. across systems with and without FWB and CACHE DIC).
More information about the linux-arm-kernel
mailing list