On Thu, 13 Mar 2008, Jeremy Fitzhardinge wrote: > > My other concern is just correctness over time on the Linux side. We already > have enough trouble keeping things like the pte and page structure state in > sync, with resulting rare data-loss bugs. Adding another layer which only > applies in specific environments raises the possibility for new bugs to be > un-noticed for a long time. How can we structure the VM changes to make sure > that its robust in the face of maintenance? Yes, that's the main concern, as whenever lots of subtlety is added. I wonder if there's any chance of a CONFIG_DEBUG mode, which could be run on anybody's x86 machine, without involving any virtualization, but in which the PAGE_STATEs become essential to the correct working of the mm. Hugh -- To unsubscribe from this list: send the line "unsubscribe linux-s390" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
