[Xen-devel] [PATCH v2 00/22] Introduce HVM without dm and new boot ABI

[Roger Pau Monne <roger.pau@xxxxxxxxxx>]

This series is split in the following order:

 - Patches from 1 to 10 switch HVM domain contruction to use the xc_dom_* 
   family of functions, like they are used to build PV domains. 
 - Patches from 11 to 22 introduce the creation of HVM domains without 
   a device model, which is replaced by directly loading a kernel like it's 
   done for PV guests. A new boot ABI based on the discussion in the thread 
   "RFC: making the PVH 64bit ABI as stable" is also introduced.

This series has been successfully tested on the following hardware:

 - Intel Xeon W3550.
 - AMD Opteron 4184.

With both hap=0 and hap=1 in the configuration file. I've been able to boot 
a SMP guest in this mode with a virtual hard drive and a virtual network 
card, all working fine AFAICT.

For this round only maintainers of the specific code being modified have 
been Cced on the patches.

The series can also be found in the following git repo:

git://xenbits.xen.org/people/royger/xen.git branch hvm_without_dm_v2

And for the FreeBSD part:

git://xenbits.xen.org/people/royger/freebsd.git branch new_entry_point_v2

In case someone wants to give it a try, I've uploaded a FreeBSD kernel that 
should work when booted into this mode:

https://people.freebsd.org/~royger/kernel_no_dm

The config file that I've used is:

<config>
kernel="/path/to/kernel_no_dm"

builder="hvm"
device_model_version="none"

memory=128
vcpus=2
name = "freebsd"
</config>

Of course if you have a FreeBSD disk already setup it can also be added to 
the configuration file, and the following line can be used to point FreeBSD 
to the disk:

extra="vfs.root.mountfrom=ufs:/dev/ufsid/<disk_id>"

Thanks, Roger.

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