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On Mon, 13 Mar 2006, Zachary Amsden wrote: > One shortcut we have found most helpful is to simply disable NMI delivery > to the paravirtualized kernel. There is no reason NMIs can't be > supported, but typical uses for them are not as productive in a > virtualized environment. Watchdog NMIs are of limited use if the OS is > already correct and running on stable hardware; profiling NMIs are > similarly of less use, since this task is accomplished with more accuracy > in the VMM itself; and NMIs for machine check errors should be handled > outside of the VM. The addition of NMI support does create additional > complexity for the trap handling code in the VM, and although the task is > surmountable, the value proposal is debatable. Here, again, feedback > is desired. A guest unmaskable (with programmable interrupt frequency) event would certainly be of use and would take care of the majority of NMI users. Thanks, Zwane - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
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