Messages in this thread | | | Date | Fri, 05 Apr 2013 17:32:30 -0400 | From | "Michael R. Hines" <> | Subject | Re: [PATCHv2] rdma: add a new IB_ACCESS_GIFT flag |
| |
Well, I have the "is_dup_page()" commented out.......when RDMA is activated.....
Is there something else in QEMU that could be touching the page that I don't know about?
- Michael
On 04/05/2013 05:03 PM, Roland Dreier wrote: > On Fri, Apr 5, 2013 at 1:51 PM, Michael R. Hines > <mrhines@linux.vnet.ibm.com> wrote: >> Sorry, I was wrong. ignore the comments about cgroups. That's still broken. >> (i.e. trying to register RDMA memory while using a cgroup swap limit cause >> the process get killed). >> >> But the GIFT flag patch works (my understanding is that GIFT flag allows the >> adapter to transmit stale memory information, it does not have anything to >> do with cgroups specifically). > The point of the GIFT patch is to avoid triggering copy-on-write so > that memory doesn't blow up during migration. If that doesn't work > then there's no point to the patch. > > - R. >
| |