Re: [Xen-devel] passing smbios table from qemu

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Wed, 2014-01-08 at 18:29 +0000, Ross Philipson wrote:
> > -----Original Message-----
> > From: xen-devel-bounces@xxxxxxxxxxxxx [mailto:xen-devel-
> > bounces@xxxxxxxxxxxxx] On Behalf Of Ian Campbell
> > Sent: Tuesday, January 07, 2014 8:56 AM
> > To: Zhang, Eniac
> > Cc: xen-devel@xxxxxxxxxxxxx
> > Subject: Re: [Xen-devel] passing smbios table from qemu
> > 
> > On Mon, 2014-01-06 at 21:01 +0000, Zhang, Eniac wrote:
> > 
> > > Question, am I missing anything, or this feature (passing smbios) is
> > > still work in progress?
> > 
> > Under Xen smbios tables are supplied via hvmloader, not via qemu.
> > 
> > What tables and or values do you want to override/supply?
> > 
> > I believe that libxc supports passing in extra smbios tables when
> > building the guest (via struct xc_hvm_build_args.smbios_module) but
> > nothing has been plumbed in to make use of this.
> > 
> > I'm not aware of any on going work to plumb that stuff further up, e.g.
> > to libxl and xl or other toolstacks. (I think the libxc functionality is
> > only consumed by the XenClient toolstack).
> 
> Just FYI, I did go back and add the support (and docs) for it in
> libxl. I did this after the first set of patches went in per someone's
> request (can't recall who it was at the moment).

Ah yes, here it is:
       smbios_firmware="STRING"
           Specify a path to a file that contains extra SMBIOS firmware
           structures to pass in to a guest. The file can contain a set DMTF
           predefined structures which will override the internal defaults.
           Not all predefined structures can be overridden, only the
           following types: 0, 1, 2, 3, 11, 22, 39. The file can also contain
           any number of vendor defined SMBIOS structures (type 128 - 255).
           Since SMBIOS structures do not present their overall size, each
           entry in the file must be preceded by a 32b integer indicating the
           size of the next structure.

Did you not have a tool/library for helping to create such blobs
somewhere? Or is my memory playing tricks?

Ian.


_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
http://lists.xen.org/xen-devel