On Wed, Feb 20, 2008 at 11:39:42AM +0100, Andrea Arcangeli wrote: > XPMEM simply can't use RCU for the registration locking if it wants to > schedule inside the mmu notifier calls. So I guess it's better to add
Whoa there. In Christoph's patch, we did not use rcu for the list. It was a simple hlist_head. The list manipulations were done under down_write(¤t->mm->mmap_sem) and would therefore not be racy. All the callout locations are already acquiring the mmap_sem at least readably, so we should be safe. Maybe I missed a race somewhere. Thanks, Robin ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ kvm-devel mailing list kvm-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/kvm-devel
