Re: [PATCH] xen/kexec: Wire up kexec hypercalls for PVH hardware domains

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

On Mon, Jul 20, 2026 at 07:58:25PM +0100, Andrew Cooper wrote:
> Nothing in do_kexec_op() is PV specific.  Plumb in PVH guests too.
> 
> Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
> ---
> CC: Jan Beulich <jbeulich@xxxxxxxx>
> CC: Roger Pau Monné <roger.pau@xxxxxxxxxx>
> CC: Teddy Astie <teddy.astie@xxxxxxxxxx>
> 
> kexec-tools in userspace still has a PV check needing dropping before kexec is
> generally usable for PVH dom0's, but the Xen side should be all fine.

Yeah, I took a look into that but didn't attempt to remove the check.

However, a PVH dom0 would/could have two ways do to kexec:  it could
do a guest-only kexec (like other HVM guests), or a full host kexec
(like PV dom0).  Do we need a switch in kexec tools to signal whether
we want to perform a host vs guest kexec?  Or should we just assume
that a PVH dom0 will exclusively do host kexec?

Thanks, Roger.