[Xen-devel] [PATCH] x86: suppress sync when XPTI is disabled for a domain

["Jan Beulich" <JBeulich@xxxxxxxx>]

Now that we have a per-domain flag we can and should control sync-ing in
a more fine grained manner: Only domains having XPTI enabled need the
sync to occur.

Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>

--- a/xen/arch/x86/mm.c
+++ b/xen/arch/x86/mm.c
@@ -3765,7 +3765,7 @@
                         break;
                     rc = mod_l4_entry(va, l4e_from_intpte(req.val), mfn,
                                       cmd == MMU_PT_UPDATE_PRESERVE_AD, v);
-                    if ( !rc && !cpu_has_no_xpti )
+                    if ( !rc && v->domain->arch.pv_domain.xpti )
                     {
                         bool local_in_use = false;
 



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