[Xen-changelog] [xen master] x86: suppress sync when XPTI is disabled for a domain

[patchbot@xxxxxxx]

commit b7eb9d8bd61ecdc399e8fc41ea4bbff35cbe0755
Author:     Jan Beulich <jbeulich@xxxxxxxx>
AuthorDate: Tue May 29 12:38:09 2018 +0200
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Tue May 29 12:38:09 2018 +0200

    x86: suppress sync when XPTI is disabled for a domain
    
    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>
    Reviewed-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Release-acked-by: Juergen Gross <jgross@xxxxxxxx>
---
 xen/arch/x86/mm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/xen/arch/x86/mm.c b/xen/arch/x86/mm.c
index 50b5343899..2b743921c3 100644
--- a/xen/arch/x86/mm.c
+++ b/xen/arch/x86/mm.c
@@ -3765,7 +3765,7 @@ long do_mmu_update(
                         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 && pt_owner->arch.pv_domain.xpti )
                     {
                         bool local_in_use = false;
 
--
generated by git-patchbot for /home/xen/git/xen.git#master

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