On Sun, Sep 28, 2008 at 02:34:19PM +0800, Han, Weidong wrote: > I don't understand why this approach reduces IOTLB utility. How to > say unrelated devices with unrelated buffers competing for the same > resource? Multiple devices shares one page table should improve > IOTLB utility, because some entries in IOTLB can be used for all of > them.
You are assuming that there will be sharing of frames between devices. I am assuming that there won't be to any significant degree. If my assumption is correct, then each device will benefit from having a full IOTLB for itself. Cheers, Muli -- The First Workshop on I/O Virtualization (WIOV '08) Dec 2008, San Diego, CA, http://www.usenix.org/wiov08/ xxx SYSTOR 2009---The Israeli Experimental Systems Conference http://www.haifa.il.ibm.com/conferences/systor2009/ -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
