Re: [kvm-devel] mmu notifiers

[Avi K. <av...@qu...>]

Christoph Lameter wrote:
>   
>> Excellent, the more users the patch has, the easier it will be to justify it.
>>     
>
> We'd like to make sure though that we can sleep when the hooks have been 
> called. We may have to sent a message to kick remote ptes out when local 
> pte changes happen.
>
>   

It may be as simple as moving the notifier calls down to a sleeping 
context, away from the pte lock and any friends.

kvm also needs to send a message on an mmu notification, but that's just 
an IPI within the same host.

-- 
Any sufficiently difficult bug is indistinguishable from a feature.