On Fri, Jan 13, 2017 at 04:16:01AM -0700, Jan Beulich wrote:
> >>> On 12.01.17 at 22:59, <eric.devol...@oracle.com> wrote:
> > CC: Elena Ufimtseva <elena.ufimts...@oracle.com>
> > CC: Daniel Kiper <daniel.ki...@oracle.com>
> Cc: Andrew Cooper <andrew.coop...@citrix.com>
> (as the kexec maintainer)
> > Note: The __XEN_LATEST_INTERFACE_VERSION__ has been bumped to
> > 0x00040900 due to the introduction of a new hypervisor call.
> This bumping is required only if something changes in the interface
> such that e.g. source code would need adjustment to not fail to
> build.

We need a check in kexec-tools to verify that STATUS hypercall
is available. Otherwise we can disable relevant functionality.
I thought that we can do that because __XEN_LATEST_INTERFACE_VERSION__
is exposed via public headers.


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