On Fri, May 14, 2010 at 12:10:28AM +0800, lei yang wrote:
> On Thu, May 13, 2010 at 11:53 PM, Pasi Kärkkäinen <[1]pasik@xxxxxx> wrote:
>
> On Thu, May 13, 2010 at 11:47:03PM +0800, lei yang wrote:
> > On Thu, May 13, 2010 at 8:33 PM, Pasi Kärkkäinen
> <[1][2]pasik@xxxxxx> wrote:
> >
> > On Thu, May 13, 2010 at 11:13:00AM +0800, lei yang wrote:
> > > Hi All,
> > >
> > > I download a xen 4.0.0, after I run "make world" I got a
> 2.6.33.1
> > kernel,
> > > it should be a kernel for Dom0, my question is " how to get
> a domU
> > kernel
> > > for 2.6.33.1"
> > >
> >
> > The same kernel can be used also for domU.
> >
> >
> > a.I'm confused by this in the readme of xen4.0.0, I saw we can get
> domU
> > with " KERNELS="linux-2.6-xen0 linux-2.6-xenU"" when run "make",
> and I
> > got two kernel one is for dom0, anther is domU, the size of dom0 is
> bigger
> > than domU, do you mean we can ignor this(KERNELS="linux-2.6-xen0
> > linux-2.6-xenU), just use one dom0 kernel for domU?
> >
>
> Those options are required for building the linux-2.6.18-xen based "old"
> xenlinux kernels.
> If you don't specify KERNELS= at all, and only use "make world", it'll
> build you a pvops kernel.
> > b. if I saw some document, they tell "the dom0 need the patch for
> xen "
> > eg:wget
> >
>
> [2][3]http://gentoo-xen-kernel.googlecode.com/files/xen-patches-2.6.33-1.tar.bz2
> > , my question is "does domU kernel need this patch?
> >
>
> If you want to build a Xenlinux based domU kernel, then you need that
> patch.
> pvops kernels don't require that patch.
>
> See [4]http://wiki.xensource.com/xenwiki/XenDom0Kernels for more
> information.
> That says Dom0Kernels, but it also applies for domU kernels.
>
>
> do you mean the Dom0 kernel *image* can be used for DomU? one quick
> quesion here"
> dom0 enabled CONFIG_XEN_DOM0=y , if we use dom0 kernel image for domU, do
> we need to disable this CONFIG_XEN_DOM0
>
The exact same built binary *image* can be used for dom0 and domU.
When booting the same image as domU it won't have access to any of the
privileged (dom0) things, so having the CONFIG_XEN_DOM0 enabled doesn't matter.
-- Pasi
> Thanks
> Lei
>
>
>
> You can see the two different types described there (Xenlinux and
> pvops).
> >
> > c.if domU does not use that patch, and I download a kernel from
> > [3][5]kernel.org, which kernel config need to be opened for
> > pvops Xen domU,
> >
>
> You don't need a special config for upstream/[6]kernel.org pvops based
> domU kernel.
> You just need to enable the pvops Xen domU related options.
> See: [7]http://wiki.xensource.com/xenwiki/XenParavirtOps
>
> >
> > d.which kernel version is the latest one for dom0 kernel support, I
> go to
> > [4][8]http://code.google.com/p/gentoo-xen-kernel/updates/list , I
> find the
> > latest patch for dom0 is xen-patches-2.6.33-1.tar.bz2, does it mean
> the
> > *official* latest one is 2.6.33? and how about domU,which is the
> > latest kernel version for domU, I think it may be the latest one in
> > [5][9]kernel.org(2.6.43-r6)
> >
>
> The latest Xenlinux patches are for 2.6.33, yes.
> I'd recommend using 2.6.32 instead, since that's the long term supported
> kernel,
> and it's picked up by multiple Linux distros.
>
> Also the latest recommended pvops based dom0 kernel is 2.6.32,
> it's available in Jeremy's xen.git xen/stable-2.6.32.x branch.
> See [10]http://wiki.xensource.com/xenwiki/XenParavirtOps for more
> information.
>
> >
> > Sorry to ask for so many quesion, I'm new to xen
> >
>
> No problems.
>
> -- Pasi
>
> > Thanks
> > Lei
> >
> >
> >
> >
> >
> > Or then you can grab a kernel from [6][11]kernel.org and build it
> with pvops
> > Xen domU support
> > enabled.
> >
> > Or you can get any of the other xenlinux source trees.
> > -- Pasi
> >
> > --
> > "We learn from failure, not from success!"
> >
> > References
> >
> > Visible links
> > 1. mailto:[12]pasik@xxxxxx
> > 2.
>
> [13]http://gentoo-xen-kernel.googlecode.com/files/xen-patches-2.6.33-1.tar.bz2
> > 3. [14]http://kernel.org/
> > 4. [15]http://code.google.com/p/gentoo-xen-kernel/updates/list
> > 5. [16]http://kernel.org/
> > 6. [17]http://kernel.org/
>
> --
> "We learn from failure, not from success!"
>
> References
>
> Visible links
> 1. mailto:pasik@xxxxxx
> 2. mailto:pasik@xxxxxx
> 3.
> http://gentoo-xen-kernel.googlecode.com/files/xen-patches-2.6.33-1.tar.bz2
> 4. http://wiki.xensource.com/xenwiki/XenDom0Kernels
> 5. http://kernel.org/
> 6. http://kernel.org/
> 7. http://wiki.xensource.com/xenwiki/XenParavirtOps
> 8. http://code.google.com/p/gentoo-xen-kernel/updates/list
> 9. http://kernel.org/
> 10. http://wiki.xensource.com/xenwiki/XenParavirtOps
> 11. http://kernel.org/
> 12. mailto:pasik@xxxxxx
> 13.
> http://gentoo-xen-kernel.googlecode.com/files/xen-patches-2.6.33-1.tar.bz2
> 14. http://kernel.org/
> 15. http://code.google.com/p/gentoo-xen-kernel/updates/list
> 16. http://kernel.org/
> 17. http://kernel.org/
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