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SubjectRe: [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?






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