Le Vendredi 07 Avril 2006 10:40, Xu, Anthony a écrit : > From: Tristan Gingold > > >To: Xu, Anthony; Tian, Kevin; xen-ia64-devel@lists.xensource.com > >The race is we don't invalidate while we had to. This means a ptc.ga is > >concurrent to an itc. > >For me there is no race: the itc wins. Of course, it may loose to do the > > cpu itc, but it doesn't matter. > > Further think, yes, there is no race, some time itc win, some time ptc.ga > win, If ptc.ga wins, it will impact performance ( extra tlb miss). > > One more comment, > There maybe two vcpus running on same LP, in this situation, VHPT for this > LP is purged twice. Correct. Pathological case ?
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