On Fri, Feb 01, 2008 at 05:35:28PM -0600, Robin Holt wrote: > No, we need a callout when we are becoming more restrictive, but not > when becoming more permissive. I would have to guess that is the case > for any of these callouts. It is for both GRU and XPMEM. I would > expect the same is true for KVM, but would like a ruling from Andrea on > that.
I still hope I don't need to take any lock in _range_start and that losing coherency (w/o risking global memory corruption but only risking temporary userland data corruption thanks to the page pin) is ok for KVM. If I would have to take a lock in _range_start like XPMEM is forced to do (GRU is by far not forced to it, if it would switch to my #v5) then it would be a problem. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
