Bug#424759: Ответ: Bug#424759: linux-image-2.6.18-4-xen-686: Please build both PAE and non-PAE kernels for Xen

["Max Dmitrichenko" <dmitrmax@gmail.com>]

> One search for "xen-hypervisor" on the Debian packages gives:
>
> xen-hypervisor-3.0.3-1-amd64
> xen-hypervisor-3.0.3-1-i386
> xen-hypervisor-3.0.3-1-i386-pae
>
> This means that there is a non-PAE version already available (read the
> package description).

This means that there's only a non-PAE hypervisor available. But there
is no kernel compiled w/o PAE.

Reading Fedora HOWTO is a doubtful source of information since Fedora
provides only PAE hypervisor, so it is true that running Xen on Fedora
requires PAE to be enabled in kernel. But in general this is not true.

Steve, IMHO, not providing non-PAE kernel images hits the usability of
the Xen overall. In the current state only another Linux can be
virtualized with Debian's Xen. But what about other good and open OSes
wich are supported by non-PAE Xen? The world is not limited with
Linux. Of course, I can try to compile such kernel myself, but what
that is not obvious procedure, since linux-source package can't be use
OOB to compile Xen image with kernel-package. But hey, what about
security updates then? One will have to do the recompilation every
time the kernel is updated.

--
Max


2007/5/19, Teodor <mteodor@gmail.com>:
> On 5/17/07, Steve Langasek <vorlon@debian.org> wrote:
> > On Thu, May 17, 2007 at 11:20:26AM +0400, Max Dmitrichenko wrote:
> > > Using PAE kernels and hypervisor is required for big virtualizing
> servers.
> > > But non-PAE kernels are also required by developers, students and other
> > > people who use Xen on their desktop boxes to do OS research,
> multiplatform
> > > development and so on. Providing only PAE kernel disables the ability to
> > > run at least NetBSD and OpenSolaris, may be some other OSes too.
> >
> > > Please, build also the non-PAE kernels in the future.
> >
> > IMHO this bug should be wontfixed.  We already provide binary kernel
> images
> > for an excessive number of flavors; it's unrealistic to think that we
> would
> > be able to provide prepackaged images for all possible use cases, the
> > important thing is to provide images that are usable on all target
> > /hardware/, and if a user needs more specific options afterwards that's
> why
> > we have linux-tree and linux-source packages.
>
>
> One search for "xen-hypervisor" on the Debian packages gives:
>
> xen-hypervisor-3.0.3-1-amd64
> xen-hypervisor-3.0.3-1-i386
> xen-hypervisor-3.0.3-1-i386-pae
>
> This means that there is a non-PAE version already available (read the
> package description).
>
> Note: using the non-PAE version gives a kernel panic on my system.
> I've read the Fedora HOWTO on XEN and it states that XEN 3 requires
> PAE to be enabled!!