[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] Re: Could we do immediate pte zaps in vunmap?
On Fri, Nov 26, 2010 at 12:10:51AM -0800, Jeremy Fitzhardinge wrote: > What if vm_unmap_ram() and co. immediately zeroed out the ptes, but > lazily deferred the tlb flushes? It seems to me there's no benefit in > batching up the pte clearing since that can't be amortized like the tlb > flush. Yes that can be done. > I think that would solve the problem we have with the interactions > between lazy unmap and Xen. The issue is having stray pte entries > around (because Xen keeps track of those as part of its page-type > mechanism), but stale tlb entries are no problem. It would be great if that solves it. _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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