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Re: updating Xen public headers

On 12/05/11 20:29, Manuel Bouyer wrote:
On Mon, Dec 05, 2011 at 02:19:39PM +0100, Christoph Egger wrote:


NetBSD still uses xen public headers from Xen 3.3.0.
I want to rename xen3-public to xen-public and then
update them to Xen 4.1.2.

The new headers are backward-compatible.

For renaming, I want to do it this way:

1. Re-import the files from xen3-public into new directory (xen-public)
2. Update all files to use headers from xen-public
3. Remove xen3-public
4. Import headers from Xen 4.1.2
5. Resolve conflicts

Any comments?

What do we gain with the Xen 4.1.2 headers ?

New interfaces for PV drivers:

- Xen transcedent memory

PCI IO improvements for PV domU:

- PCI MSI support
- PCI Express AER support

New features:

- xen honors flags to be placed into guest kernel available
  pte bits if enabled (for grant table)
- support for 128 vcpus
  (old interface is still present and supports up to 32 vcpus)
- PCI passthrough: new hypercalls to support SR-IOV
- new hypercall to for physical cpu hotplugging
- new hypercall for physical page offlining
- fixes to compile with clang
- machine check recovery mechanism


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