Re: [patch 02/13] KVM: MMU: switch to get_user_pages_fast

Andrea Arcangeli
2008-09-09T12:21:40Z

On Sun, Sep 07, 2008 at 11:45:41AM +0300, Avi Kivity wrote:
> Marcelo Tosatti wrote:
>> Avoid mmap_sem / pt lock acquision if the pagetables are present. The
>> improvement for hugepage backed guests is more significant, since pte
>> walk + page grab for such mappings is serialized by mm->page_table_lock.
>>
>> CC: Andrea Arcangeli <andrea@qumranet.com>
>>
>>
>
> I'd like to apply this. Andrea, can you verify that mmu notifiers
> interaction is okay?

Looks great to me. Thanks!