Re: [PATCH v4 00/04] HVM firmware passthrough

[Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>]

On Fri, Dec 21, 2012 at 06:31:58PM -0500, Ross Philipson wrote:
> > -----Original Message-----
> > From: Konrad Rzeszutek Wilk [mailto:konrad.wilk@oracle.com]
> > Sent: Friday, December 21, 2012 2:46 PM
> > To: Ross Philipson
> > Cc: xen-devel@lists.xensource.com
> > Subject: Re: [Xen-devel] [PATCH v4 00/04] HVM firmware passthrough
> > 
> > On Thu, Dec 20, 2012 at 01:55:10PM -0500, Ross Philipson wrote:
> > > This patch series introduces support of loading external blocks of
> > > firmware into a guest. These blocks can currently contain SMBIOS
> > > and/or ACPI firmware information that is used by HVMLOADER to modify a
> > > guests virtual firmware at startup. These modules are only used by
> > HVMLOADER and are effectively discarded after HVMLOADER has completed.
> > >
> > > The domain building code in libxenguest is passed these firmware
> > > blocks in the xc_hvm_build_args structure and loads them into the new
> > > guest, returning the load address. The loading is done in what will
> > > become the guests low RAM area just behind to load location for
> > > HVMLOADER. After their use by HVMLOADER they are effectively
> > > discarded. It is the caller's job to load the base address and length
> > > values in xenstore using the paths defined in the new hvm_defs.h
> > header so HVMLOADER can located the blocks.
> > >
> > 
> > Are there patches to plug this in the 'xl'?
> > 
> 
> So far there are only patches to expose it at the xc layer. Nothing else
> seems to use the xc_hvm_build() call (only xc_hvm_build_target_mem()).
> Since the use of this feature seems dependent on a user's particular
> needs, I am not sure how it could generically be built into xl. Any
> suggestions are welcome though and I could post subsequent patches.

I was thinking something like this:

firmware="nvidia.bin"
acpi_dsdt="acpi.dsdt"

?
> 
> Thanks
> Ross