Re: [PATCH] mmu notifiers #v5

[Christoph Lameter]

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?




--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/