[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH v4 00/04] HVM firmware passthrough
> -----Original Message----- > From: Konrad Rzeszutek Wilk [mailto:konrad.wilk@xxxxxxxxxx] > Sent: Friday, December 21, 2012 2:46 PM > To: Ross Philipson > Cc: xen-devel@xxxxxxxxxxxxxxxxxxx > 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. Thanks Ross _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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