[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH V3] X86/vMCE: handle broken page with regard to migration
George Dunlap writes ("Re: [Xen-devel] [PATCH V3] X86/vMCE: handle broken page with regard to migration"): > But on the whole, is that really that much *faster* to do it that way? > Either way you're still adding a single hypercall to the whole thing, > and one iteration of a loop for each page; but in Jinsong's patch, the > loop is done all at once, so presumably the compiler / processor will be > able to do make better use of loop unrolling / registers / the pipeline > / branch prediction / caches &c. > > The only way to avoid the loop would be to add an extra "have any pages > been marked broken / dirty" bit somewhere, which is probably more > trouble than it's worth. OK, that makes sense. Ian. _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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