Re: [kvm-devel] [PATCH] KVM: add KVM_SYNC_SHADOW_WITH_USER ioctl (v2)

[Anthony L. <ali...@us...>]

Avi Kivity wrote:
> Marcelo Tosatti wrote:
>> Export nukeing of shadow MMU pages through an ioctl, required for
>> consistency on balloon inflate.
>>
>>   
>
> With mmu notifiers (posted two minutes after this) shadow is 
> implicitly synced with userspace.  Since it seems to be progressing 
> rapidly, I won't apply this patch in the hope that mmu notifiers can 
> be ready for 2.6.25.

Does that mean that we'll only support ballooning on host kernels > 
2.6.25 are you going to do judo with debug registers to implement it for 
older kernels?

Regards,

Anthony Liguori