Re: [HMM 11/16] mm/hmm/mirror: helper to snapshot CPU page table v2

[Mel Gorman]

On Thu, Mar 16, 2017 at 12:05:30PM -0400, J?r?me Glisse wrote:
> This does not use existing page table walker because we want to share
> same code for our page fault handler.
> 
> Changes since v1:
>   - Use spinlock instead of rcu synchronized list traversal
> 

Didn't look too closely here because pagetable walking code tends to have
few surprises but presumably there will be some 5-level page table
updates.