Il 10/09/2012 03:43, Rusty Russell ha scritto: >> Now that vfio is upstream and work on qemu integration >> is being worked on, we might finally see people using this bit >> to allow memory overcommit with device assignment. > That was left-field.... so you're saying some guest might pull a page > from the balloon and DMA to it, and the vfio device needs to know in > advance that it's going to do it? Not the vfio device, but the page needs to be pinned with mlock so the effect is the same. > But what will we do if the guest doesn't ack the bit? Just pin the whole memory. Paolo > ie. I don't think it can really be optional. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
