On Wed, Aug 8, 2012 at 5:15 PM, Avi Kivity <avi@xxxxxxxxxx> wrote: > On 08/08/2012 12:07 PM, Paolo Bonzini wrote: >> Il 08/08/2012 11:05, Avi Kivity ha scritto: >>>> > From: Liu Ping Fan <pingfank@xxxxxxxxxxxxxxxxxx> >>>> > >>>> > Collect unused object and release them at caller demand. >>>> > >>> Please explain the motivation for this patch. >> >> It's poor man RCU, I think? > > I thought that it was to defer destructors (finalizers) to a more > suitable context. But why is the unref context unsuitable? > Yes, it is to defer destructors. See 0009-memory-prepare-flatview-and-radix-tree-for-rcu-style.patch When MemoryRegion is _del_subregion from mem in updater, it may be still in use by reader -- radix or flatview, so defer its destructors to the reclaimer --phys_map_release(PhysMap *map) If we have rcu, it could be elegant to do this. I think, I should write the commit comment here too, not until the followed patch. Regards, pingfan > I don't see how it relates to RCU, where is the C and the U? > > Anyway the list eagerly awaits the explanation. > > -- > error compiling committee.c: too many arguments to function -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
