Re: [ofa-general] [PATCH][RFC]: pte notifiers -- support for external page tables

Gleb Natapov
2007-09-06T08:41:51Z

On Thu, Sep 06, 2007 at 11:35:24AM +0300, Avi Kivity wrote:
> Gleb Natapov wrote:
>> On Wed, Sep 05, 2007 at 07:38:48PM +0300, Avi Kivity wrote:
>>
>>> This sample patch adds a new mechanism, pte notifiers, that allows
>>> drivers
>>> to register an interest in a changes to ptes. Whenever Linux changes a
>>> pte, it will call a notifier to allow the driver to adjust the external
>>> page table and flush its tlb.
>>>
>> How is this different from http://lwn.net/Articles/133627/? AFAIR the
>> patch was rejected because there was only one user for it and it was
>> decided that it would be better to maintain it out of tree for a while.
>>
>
> Your patch is more complete.
>
> There are now at least three users: you, kvm, and newer Infiniband HCAs.
> Care to resurrect the patch?
>
This is not my patch :) This is patch written by David Addison from
Quadrics. I CCed him on my previous email. I just saw that you are
trying to do something similar.

--
Gleb.