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Re: [Qemu-devel] [PATCHv2] rdma: add a new IB_ACCESS_GIFT flag
From: |
Michael S. Tsirkin |
Subject: |
Re: [Qemu-devel] [PATCHv2] rdma: add a new IB_ACCESS_GIFT flag |
Date: |
Tue, 9 Apr 2013 19:39:30 +0300 |
On Fri, Apr 05, 2013 at 04:54:39PM -0400, Michael R. Hines wrote:
> To be more specific, here's what I did:
>
> 1. apply kernel module patch - re-insert module
> 1. QEMU does: ibv_reg_mr(........IBV_ACCESS_GIFT | IBV_ACCESS_REMOTE_READ)
> 2. Start the RDMA migration
> 3. Migration completes without any errors
>
> This test does *not* work with a cgroup swap limit, however. The
> process gets killed. (Both with and without GIFT)
>
> - Michael
Try to attach a debugger and see where it is when it gets killed?
> On 04/05/2013 04:43 PM, Roland Dreier wrote:
> >On Fri, Apr 5, 2013 at 1:17 PM, Michael R. Hines
> ><address@hidden> wrote:
> >>I also removed the IBV_*_WRITE flags on the sender-side and activated
> >>cgroups with the "memory.memsw.limit_in_bytes" activated and the migration
> >>with RDMA also succeeded without any problems (both with *and* without GIFT
> >>also worked).
> >Not sure I'm interpreting this correctly. Are you saying that things
> >worked without actually setting the GIFT flag? In which case why are
> >we adding this flag?
> >
> > - R.
> >
>
- Re: [Qemu-devel] [PATCHv2] rdma: add a new IB_ACCESS_GIFT flag, (continued)
- Re: [Qemu-devel] [PATCHv2] rdma: add a new IB_ACCESS_GIFT flag, Michael R. Hines, 2013/04/05
- Re: [Qemu-devel] [PATCHv2] rdma: add a new IB_ACCESS_GIFT flag,
Michael S. Tsirkin <=
- Re: [Qemu-devel] [PATCHv2] rdma: add a new IB_ACCESS_GIFT flag, Michael R. Hines, 2013/04/09
- Re: [Qemu-devel] [PATCHv2] rdma: add a new IB_ACCESS_GIFT flag, Michael S. Tsirkin, 2013/04/09
- Re: [Qemu-devel] [PATCHv2] rdma: add a new IB_ACCESS_GIFT flag, Michael S. Tsirkin, 2013/04/09
Re: [Qemu-devel] [PATCHv2] rdma: add a new IB_ACCESS_GIFT flag, Michael S. Tsirkin, 2013/04/09