On Wed, Sep 17, 2014 at 01:27:14PM +0200, Radim Krčmář wrote: > 2014-09-17 13:26+0300, Gleb Natapov: > > For async_pf_execute() you do not need to even retry. Next guest's page > > fault > > will retry it for you. > > Wouldn't that be a waste of vmentries? This is how it will work with or without this second gup. Page is not mapped into a shadow page table on this path, it happens on a next fault.
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