Messages in this thread | | | Date | Thu, 31 Jan 2008 15:09:55 -0800 (PST) | From | Christoph Lameter <> | Subject | Re: [PATCH] mmu notifiers #v5 |
| |
On Thu, 31 Jan 2008, Christoph Lameter wrote:
> > pagefault against the main linux page fault, given we already have all > > needed serialization out of the PT lock. XPMEM is forced to do that > > pt lock cannot serialize with invalidate_range since it is split. A range > requires locking for a series of ptes not only individual ones.
Hmmm.. May be okay after all. I see that you are only doing it on the pte level. This means the range callbacks are taking down a max of 512 entries. So you have a callback for each pmd. A callback for 2M of memory?
| |