Re: Removing the XEN_COMPAT_030001 cruft

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

On Tue, Jun 26, 2012 at 12:24:56AM +0200, Jean-Yves Migeon wrote:
> Dear all,
> 
> Now that -6 has been branched, I would like to remove the
> XEN_COMPAT_030001 code that lies here and there in the source tree.
> 
> Reasons are following:
> - first, it simplifies code reading by making the P2M/M2P translations
> the same for dom0 and domU, without having to play with XPMAP_OFFSET
> tricks for old domU images.
> - it forces the use of the hypercall page. The int 0x82 for hypercalls
> has disappeared with newest revision of Xen (4.0 or 4.1 if memory serves
> right).
> -  It allows the merge of the xpmap_mtop and the mfn_to_pfn functions in
> one go, using the xen_p2m_*() API Christoph and I drafted some years ago [1]
> - last but not least, all supported Linux distros out there either use a
> heavily patched Xen 3.0.3 hypervisor (RHEL 5), or simply made the jump
> to Xen 4 (Debian, Ubuntu, ...). 3.0.1 and down are not really maintained
> any more IMHO, and should be avoided for security reasons.
> 
> Opinions?

Isn't it still required by some amazon setup ?

-- 
Manuel Bouyer <bouyer%antioche.eu.org@localhost>
     NetBSD: 26 ans d'experience feront toujours la difference
--