Re: [Xen-devel] [PATCH v3 00/04] HVM firmware passthrough

[Ross Philipson <Ross.Philipson@xxxxxxxxxx>]

Yea I guess I should follow up on this. I did not manage to get it into 4.2 but 
I thought it had clearance for 4.3. Do I need to resubmit the patch set?

Thanks
Ross

> -----Original Message-----
> From: Charles Arnold [mailto:carnold@xxxxxxxx]
> Sent: Monday, December 10, 2012 12:15 PM
> To: xen-devel
> Cc: Ross Philipson
> Subject: Re: [Xen-devel] [PATCH v3 00/04] HVM firmware passthrough
> 
> I haven't seen any activity on this feature.  Is it still planned to be
> included in Xen 4.3?
> 
> - Charles
> 
> On Wed, 2012-05-23 at 14:37 +0000, 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.
> >
> > 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.
> >
> > Currently two types of firmware information are recognized and
> > processed in the HVMLOADER though this could be extended.
> >
> > 1. SMBIOS: The SMBIOS table building code will attempt to retrieve
> > (for predefined set of structure types) any passed in structures. If a
> > match is found the passed in table will be used overriding the default
> > values. In addition, the SMBIOS code will also enumerate and load any
> > vendor defined structures (in the range of types 128 - 255) that as
> > are passed in. See the hvm_defs.h header for information on the format
> of this block.
> > 2. ACPI: Static and secondary descriptor tables can be added to the
> > set of ACPI table built by HVMLOADER. The ACPI builder code will
> > enumerate passed in tables and add them at the end of the secondary
> > table list. See the hvm_defs.h header for information on the format of
> > this block.
> >
> > There are 4 patches in the series:
> > 01 - Add HVM definitions header for firmware passthrough support.
> > 02 - Xen control tools support for loading the firmware blocks.
> > 03 - Passthrough support for SMBIOS.
> > 04 - Passthrough support for ACPI.
> >
> > Note this is version 3 of this patch set. Some of the differences:
> >  - Generic module support removed, overall functionality was
> simplified.
> >  - Use of xenstore to supply firmware passthrough information to
> HVMLOADER.
> >  - Fixed issues pointed out in the SMBIOS processing code.
> >  - Created defines for the SMBIOS handles in use and switched to using
> >    the xenstore values in the new hvm_defs.h file.
> >
> > Signed-off-by: Ross Philipson <ross.philipson@xxxxxxxxxx>
> >
> 


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