From: "Michael R. Hines" <mrhines-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
To: Roland Dreier <roland-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Cc: "Michael S. Tsirkin"
<mst-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
Jason Gunthorpe
<jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>,
Sean Hefty <sean.hefty-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
Hal Rosenstock
<hal.rosenstock-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
Yishai Hadas <yishaih-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>,
Christoph Lameter <cl-vYTEC60ixJUAvxtiuMwx3w@public.gmane.org>,
"linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
LKML <linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
qemu-devel-qX2TKyscuCcdnm+yROfE0A@public.gmane.org
Subject: Re: [PATCHv2] rdma: add a new IB_ACCESS_GIFT flag
Date: Fri, 05 Apr 2013 17:32:30 -0400 [thread overview]
Message-ID: <515F42EE.8060203@linux.vnet.ibm.com> (raw)
In-Reply-To: <CAG4TOxPNHZadLjq6-HuOExf1XXLO6AYyvRQ1L09i6qVeA5dbLQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
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-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org> 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.
>
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next prev parent reply other threads:[~2013-04-05 21:32 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-24 15:51 [PATCHv2] rdma: add a new IB_ACCESS_GIFT flag Michael S. Tsirkin
2013-04-02 15:51 ` Michael S. Tsirkin
[not found] ` <20130402155104.GA27382-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2013-04-02 16:57 ` Roland Dreier
[not found] ` <CAL1RGDUe1=Xd1mpNajiLY08fJ+gBKAMDGeX3SVkS+egOQyiCxQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-04-02 17:05 ` Michael S. Tsirkin
2013-04-02 22:17 ` Michael R. Hines
[not found] ` <20130402170521.GA30295-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2013-04-03 16:07 ` Michael S. Tsirkin
[not found] ` <20130324155153.GA8597-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2013-04-05 20:17 ` Michael R. Hines
2013-04-05 20:43 ` Roland Dreier
[not found] ` <CAL1RGDU2jtrRrxi6srsH_ADiYGvJbCpCT3UvoLGTX3cvQ=s0kQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-04-05 20:51 ` Michael R. Hines
[not found] ` <515F3948.40205-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
2013-04-05 21:03 ` Roland Dreier
[not found] ` <CAG4TOxPNHZadLjq6-HuOExf1XXLO6AYyvRQ1L09i6qVeA5dbLQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-04-05 21:32 ` Michael R. Hines [this message]
[not found] ` <515F42EE.8060203-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
2013-04-09 19:03 ` Michael S. Tsirkin
[not found] ` <20130409190350.GB8212-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2013-04-10 1:26 ` Michael R. Hines
2013-04-10 3:24 ` Michael S. Tsirkin
[not found] ` <20130410032449.GA12777-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2013-04-10 4:32 ` Michael R. Hines
[not found] ` <5164EB5F.80403-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
2013-04-10 5:32 ` Michael S. Tsirkin
2013-04-10 15:48 ` Michael R. Hines
[not found] ` <516589C8.1040606-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
2013-04-10 15:05 ` Michael S. Tsirkin
[not found] ` <20130410150539.GA24381-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2013-04-10 16:28 ` Michael R. Hines
2013-04-09 19:09 ` Michael S. Tsirkin
2013-04-09 19:12 ` Michael S. Tsirkin
2013-04-05 20:54 ` Michael R. Hines
[not found] ` <515F3A0F.5030507-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
2013-04-09 16:39 ` Michael S. Tsirkin
[not found] ` <20130409163929.GA7661-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2013-04-09 17:56 ` Michael R. Hines
[not found] ` <51645630.3030608-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
2013-04-09 19:00 ` Michael S. Tsirkin
[not found] ` <515F3160.4020007-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
2013-04-09 20:34 ` Michael S. Tsirkin
[not found] ` <20130409203409.GA9246-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2013-04-09 20:37 ` Michael S. Tsirkin
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