Re: [Xen-devel] Re: [Xen-users] Why Xen will deprecated? Is it to old?

[Pasi Kärkkäinen <pasik@xxxxxx>]

On Wed, Oct 21, 2009 at 12:02:14PM +0800, Mr. Teo En Ming (Zhang Enming) wrote:
> Hi
> 
> I went to this page
> http://www.linuxfromscratch.org/lfs/view/stable/prologue/hostreqs.html
> and it says that LFS instructions are currently for building a 32-bit
> system only. Instructions for building 64-bit systems will only come
> in a future version of LFS.
> 
> I remembered I encountered some difficulties when building a 32-bit
> Xen system. PAE support must be enabled. This was mentioned by Pasi.
> 

Yes, 32bit Xen dom0 must be PAE (64G mem support enabled), and also
32bit PV guests must be PAE. 

Back in the days Xen supported also non-PAE 32bit, but not anymore nowadays.
In 32bit kernel configuration you'll see Xen options only after you enable PAE 
first.

-- Pasi

> -- 
> Mr. Teo En Ming (Zhang Enming) Dip(Mechatronics) BEng(Hons)(Mechanical
> Engineering)
> Alma Maters:
> (1) Singapore Polytechnic
> (2) National University of Singapore
> Blog URL: http://teo-en-ming-aka-zhang-enming.blogspot.com
> Email: space.time.universe@xxxxxxxxx
> MSN: teoenming@xxxxxxxxxxx
> Mobile Phone: +65-9648-9798
> Street: Bedok Reservoir Road
> Republic of Singapore
> 
> 
> On Wed, Oct 21, 2009 at 11:42 AM, Fajar A. Nugraha <fajar@xxxxxxxxx> wrote:
> > On Wed, Oct 21, 2009 at 3:59 AM, Mr. Teo En Ming (Zhang Enming)
> > <space.time.universe@xxxxxxxxx> wrote:
> >> If we don't use any specific Linux distribution like Fedora, Debian,
> >> Ubuntu, OpenSUSE, etc, we could still customize or DIY our own linux
> >> system according to the instructions here at the Linux from Scratch
> >> online book http://www.linuxfromscratch.org/lfs/view/stable/
> >>
> >> And then we could download the pv_ops/pvops dom0 kernels and Xen
> >> hypervisor and compile ourselves.
> >>
> >> Anyone forsees any problems with this approach?
> >
> > I don't see a difference whether you use specific distro or a DIY
> > system. You could always setup xen (including dom0 kernel) manually.
> > A possible snag might be if you use i386, where you need xen-friendly
> > glibc. For x86_64 it's much easier.
> >
> > --
> > Fajar
> >
> 
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