Re: [Xen-devel] [PATCH v2] kexec: implement STATUS hypercall to check if image is loaded

[Daniel Kiper <daniel.kiper@xxxxxxxxxx>]

On Fri, Jan 13, 2017 at 04:16:01AM -0700, Jan Beulich wrote:
> >>> On 12.01.17 at 22:59, <eric.devolder@xxxxxxxxxx> wrote:
> > CC: Elena Ufimtseva <elena.ufimtseva@xxxxxxxxxx>
> > CC: Daniel Kiper <daniel.kiper@xxxxxxxxxx>
>
> Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
> (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.

Daniel

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
https://lists.xen.org/xen-devel