[PATCH] x86/HVM: fix xsm_op for 32-bit guests

[Jan Beulich]

Like for PV, 32-bit guests need to invoke the compat handler, not the
native one.

Fixes: db984809d61b ("hvm: wire up domctl and xsm hypercalls")
Signed-off-by: Jan Beulich <jbeul...@suse.com>

--- a/xen/arch/x86/hvm/hypercall.c
+++ b/xen/arch/x86/hvm/hypercall.c
@@ -138,7 +138,7 @@ static const struct {
     HYPERCALL(event_channel_op),
     COMPAT_CALL(sched_op),
     COMPAT_CALL(set_timer_op),
-    HYPERCALL(xsm_op),
+    COMPAT_CALL(xsm_op),
     HYPERCALL(hvm_op),
     HYPERCALL(sysctl),
     HYPERCALL(domctl),