Re: [Xen-devel] VM SMBIOS struct field manipulation

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

Well, maybe. It depends how useful that is, really, and how you would even specify arbitrary changes to the SMBIOS structures in the config file. It’ll undoubtedly make a mess of the toolstack. For particular VM-specific changes you might be better just to change the SMBIOS code in hvmloader and build a VM-specific hvmloader binary.

 -- Keir

On 8/11/07 23:23, "C.J. Adams-Collier" <cjcollier@xxxxxxxxx> wrote:

> Great.  Thanks Kier,
>
> I'll get familiar with it.  If we create a patch to allow SMBIOS structure updates from a data source via dom0, would you want it?
>
> It looks like using a custom boot_ioremap from linux-2.6.18-xen.hg /arch/i(386|a64)/kernel/efi.c might allow manipulation of smbios fields for PV guests.  Are you familiar enough with this code to tell me whether I'm entirely off base here?
>
> Cheers,
>
> C.J.
>
> On Nov 7, 2007 11:50 PM, Keir Fraser <Keir.Fraser@xxxxxxxxxxxx> wrote:
> > PV guests don't get an SMBIOS table; only HVM guests do. To change the structure (Which is fairly hardcoded) you need to modify the hvmloader sources. Look at tools/firmware/hvmloader/smbios.c. 
> >
> >  -- Keir
> >
> >
> > On 8/11/07 00:40, "C.J. Adams-Collier" <cjcollier@xxxxxxxxx> wrote:
> >
> > > Hey folks,
> > >
> > > Is it possible to define smbios struct fields <http://src.vmindex.org/xen_3.0.4/xref/src/tools/firmware/hvmloader/smbios_types.h#75>  <http://src.vmindex.org/xen_3.0.4/xref/src/tools/firmware/hvmloader/smbios_types.h#75>   in the xmdomain.cfg <http://src.vmindex.org/xen_3.0.4/xref/src/docs/man/xmdomain.cfg.pod.5>  files?
> > >
> > >
> > > If not, which files should I patch?  Do I need to create my own "device_model" or "loader" driver?  I would like to do this for both HV and PV.
> > >
> > > Cheers,
> > >
> > > C.J .




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