[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] Baffled by multipage_allocation_permitted()
>>> Dave McCracken <dcm@xxxxxxxx> 16.06.09 15:10 >>> >Out of curiosity, why is it necessary to restrict the size of multipage >allocations at all? I'd think the memory size limits would adequately protect >against any guest going wild with it. What harm could come from, for example, >a guest asking for a 16M contiguous page? I don't know of any current need >for such a thing. I'm just wondering why we restrict it. Because contiguous memory is a more precious resource than just individual pages, and allocations strictly needing multiple contiguous pages should not fail because of a random guest doing odd things. Jan _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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