[Xen-devel] Is: DPDK 1.6 and Xen. Was:Re: Virtio on Xen

[Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>]

On Mar 5, 2014 5:33 PM, "Peter X. Gao" <peterxianggao@xxxxxxxxx> wrote:
>
> Hi Konrad, 
>
> ÂÂÂÂ Just to make sure I understand everything. So I need to set up 
> 2MB hugepage in Dom0 and use a module to share it with a HVM guest. 
> How could I compile the module? 
> ÂÂÂÂ Inside the DomU, how could I see the shared 2MB hugepages? Do I 
> need another frontend driver? Many thanks. 
>

Please don't top post. I am afraid that I can't help you much - as I just did a 
scan through the logs and found that.

I would recommend you email this to the DPDK mailing list. They should be able 
to help you much more thoroughly than I can.
> Regards 
> Peter 
>
> On Wed, Mar 5, 2014 at 10:02 AM, Konrad Rzeszutek Wilk 
> <konrad.wilk@xxxxxxxxxx> wrote: 
> > On Tue, Feb 11, 2014 at 01:01:40PM +0000, Ian Campbell wrote: 
> >> On Mon, 2014-02-10 at 10:07 -0800, Peter X. Gao wrote: 
> >> > Thanks for your reply. I am now using virtio-net and it seems working. 
> >> > However, Intel DPDK also requires hugepage. When a DPDK application is 
> >> > initiating hugepage, I got the following error. Do I need to config 
> >> > something in Xen to support hugepage? 
> >> 
> >> I'm not sure about the status of superpage support in mainline kernels 
> >> for PV Xen guests. IIRC there was a requirement to add a Xen command 
> >> line flag to enable it at the level. 
> >> 
> >> Or you could just use an HVM guest, since no special support is needed 
> >> for hugepages there. 
> >> 
> >> But maybe I'm confused because I think your use of virtio-net would 
> >> necessarily require that you be using an HVM not PV guest. 
> >> 
> >> But then looking at your logs I see Xen PV block and net but no sign of 
> >> virtio -- so I suspect you are actually doing PV and not using 
> >> virtio-net at all. 
> > 
> > DPDK 1.6 is out - and you can do Xen. You need to use HVM guests and 
> > a special module in dom0 to setup 2MB contingous pages that 
> > is shared with the guest. 
> > 
> > The protocol that DPDK uses is VirtIO. 
> > 
> > See: 
> > http://dpdk.org/browse/dpdk/commit/?id=47bd46112b710dc59b1becfb67e18da319c5debe
> >  
> > http://dpdk.org/browse/dpdk/commit/?id=148f963fb5323c1c6b6d5cea95084deb25cc73f8
> >  
> > 
> >> 
> >> Ian. 
> >> 
> >> 
> >> 
> >> _______________________________________________ 
> >> Xen-devel mailing list 
> >> Xen-devel@xxxxxxxxxxxxx 
> >> http://lists.xen.org/xen-devel 
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