Am Donnerstag, 17. Januar 2008 schrieb Rusty Russell: > Since the balloon requires Guest cooperation anyway, there seems > little reason to force it to tell the Host when it wants to reuse a > page. It can simply fault it in. Yes, thats what we do in the s390 cmm driver. All in all the driver has similarities with cmm. I dont know, if we can consolidate some code. Besides the hypervisor, we have a additional user interface: /proc/sys/vm/. The root user can specify the amount of pages in the balloon via /proc/sys/vm/cmm_pages. Another idea: Martin added an oom notifier to the cmm driver. Before the oom-killer kicks in cmm will try to free 256 pages. I think your virtio balloon driver should do the same - it seems to be the correct tradeoff. Christian _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/virtualization
