On Sat, Aug 23, 2008 at 12:33:46PM +0300, Avi Kivity wrote: > So long as there is no potential for performance or security impact, > having pvdma turned on automatically is better. We could still have > dma=noparavirt to disable it.
pvdma has advantages and disadvantages. It has a significant performance impact (compared to direct map) but it also let us avoid pinning all of the guest's memory. I this this should be a guest decision whether to use it or not, so 'dma=noparavirt' to disable it seems reasonable. Cheers, Muli -- Workshop on I/O Virtualization (WIOV '08) Co-located with OSDI '08, Dec 2008, San Diego, CA http://www.usenix.org/wiov08 -- 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
