Re: [Xen-users] Xen with DOM 0 Kernel

[Pasi Kärkkäinen <pasik@xxxxxx>]

On Fri, Mar 12, 2010 at 04:41:13PM -0800, kishore kumar wrote:
>    I am going to test the 10G 82599 .
> 
>    If i pull Xen 3.4.2, it is pulling DOM 0 version 2.6.18 of linux kernel at
>    the time of compilation, which does not have the SR-IOV .

Yeah, if you do "make world" in the Xen 3.4.x source tree it'll download
linux-2.6.18-xen from the mercurial/hg repository during the build process.

You can install Xen 3.4.x like this without downloading/compiling the 2.6.18 
kernel:

make xen
make tools
make stubdom

make install-xen
make install-tools
make install-stubdom

And then install/compile whatever dom0 kernel.

I recommend you to use either latest xen-3.4-testing.hg or latest 
xen-unstable.hg, 
and not the released Xen 3.4.2 because there has been a lot of VT-d related 
fixes lately.

> ( I mean 10G pf
>    driver is available in that version?)
> 

I'm not sure. linux-2.6.18-xen has some pf/vf drivers included, but those might
be only for the 82576 (1gig). Not sure though.

You might want to use the pv_ops dom0 kernel from Jeremy's xen.git 'xen/stable' 
branch, 
which is at version 2.6.32.9.

pv_ops dom0 kernel 2.6.32.9 requires Xen 3.4.3-rc 4.0.0-rc, it doesn't 
boot/work with Xen 3.4.2.

-- Pasi

>    On Fri, Mar 12, 2010 at 4:18 PM, Pasi Kärkkäinen <[1]pasik@xxxxxx> wrote:
> 
>      On Fri, Mar 12, 2010 at 03:46:24PM -0800, kishore kumar wrote:
>      >    Can any one let me know which latest version of Xen and which
>      >    latest version of DOM 0 Kernel to be used for testing SR-IOV
>      >    functionality?
>      >
>      >    Where can I find them?
>      >
> 
>      What SR-IOV capable card are you going to test?
>      You can either use the latest Xen 3.4.x version, or the latest Xen 4.0.0
>      rc version.
> 
>      [2]http://xenbits.xen.org/xen-3.4-testing.hg (Xen 3.4.3 release
>      candidates).
>      [3]http://xenbits.xen.org/xen-unstable.hg (xen 4.0.0 release
>      candidates).
> 
>      Available Xen dom0 kernels:
>      [4]http://wiki.xensource.com/xenwiki/XenDom0Kernels
>      -- Pasi
> 
> References
> 
>    Visible links
>    1. mailto:pasik@xxxxxx
>    2. http://xenbits.xen.org/xen-3.4-testing.hg
>    3. http://xenbits.xen.org/xen-unstable.hg
>    4. http://wiki.xensource.com/xenwiki/XenDom0Kernels

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