Messages in this thread | | | Date | Tue, 29 Jan 2008 18:28:05 -0600 | From | Jack Steiner <> | Subject | Re: [patch 2/6] mmu_notifier: Callbacks to invalidate address ranges |
| |
On Tue, Jan 29, 2008 at 04:20:50PM -0800, Christoph Lameter wrote: > On Wed, 30 Jan 2008, Andrea Arcangeli wrote: > > > > invalidate_range after populate allows access to memory for which ptes > > > were zapped and the refcount was released. > > > > The last refcount is released by the invalidate_range itself. > > That is true for your implementation and to address Robin's issues. Jack: > Is that true for the GRU?
I'm not sure I understand the question. The GRU never (currently) takes a reference on a page. It has no mechanism for tracking pages that were exported to the external TLBs.
--- jack
| |