On Sun, 2008-01-13 at 17:24 +0100, Andrea Arcangeli wrote: > Hello, > > This patch is last version of a basic implementation of the mmu > notifiers. > > In short when the linux VM decides to free a page, it will unmap it > from the linux pagetables. However when a page is mapped not just by > the regular linux ptes, but also from the shadow pagetables, it's > currently unfreeable by the linux VM. > > This patch allows the shadow pagetables to be dropped and the page to > be freed after that, if the linux VM decides to unmap the page from > the main ptes because it wants to swap out the page.
Another potential user of that I can see is the DRM. Nowadays, graphic cards essentially have an MMU on chip, and can do paging. It would be nice to be able to map user objects in them without having to lock them down using your callback to properly mark them cast out on the card. Ben. ------------------------------------------------------------------------- Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://ad.doubleclick.net/clk;164216239;13503038;w?http://sf.net/marketplace _______________________________________________ kvm-devel mailing list kvm-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/kvm-devel
