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

[Andrew Hastings <abh@cray.com>]

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?

We (Cray) also use the ioproc patch.  AFAIK the current maintainer is 
Dan Blueman at Quadrics.

-Andrew Hastings
  Cray Inc.

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