Re: [patch 0/6] MMU Notifiers V6

Jack Steiner
2008-02-13T14:31:29Z

> GRU
> - Simple additional hardware TLB (possibly covering multiple instances of
> Linux)
> - Needs TLB shootdown when the VM unmaps pages.
> - Determines page address via follow_page (from interrupt context) but can
> fall back to get_user_pages().
> - No page reference possible since no page status is kept..

I applied the latest mmuops patch to a 2.6.24 kernel & updated the
GRU driver to use it. As far as I can tell, everything works ok.
Although more testing is needed, all current tests of driver functionality
are working on both a system simulator and a hardware simulator.

The driver itself is still a few weeks from being ready to post but I can
send code fragments of the portions related to mmuops or external TLB
management if anyone is interested.

--- jack