[Xen-changelog] [xen stable-4.12] x86/spec-ctrl: Knights Landing/Mill are retpoline-safe

[patchbot@xxxxxxx]

commit 8b162b0ffc157a208808151dc6396ea16c648844
Author:     Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
AuthorDate: Fri Jul 5 10:20:39 2019 +0200
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Fri Jul 5 10:20:39 2019 +0200

    x86/spec-ctrl: Knights Landing/Mill are retpoline-safe
    
    They are both Airmont-based and should have been included in c/s 17f74242ccf
    "x86/spec-ctrl: Extend repoline safey calcuations for eIBRS and Atom parts".
    
    Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Acked-by: Jan Beulich <jbeulich@xxxxxxxx>
    master commit: e2105180f99d22aad47ee57113015e11d7397e54
    master date: 2019-05-31 19:11:29 +0100
---
 xen/arch/x86/spec_ctrl.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/xen/arch/x86/spec_ctrl.c b/xen/arch/x86/spec_ctrl.c
index 0509ac8fe2..49f355cf91 100644
--- a/xen/arch/x86/spec_ctrl.c
+++ b/xen/arch/x86/spec_ctrl.c
@@ -518,9 +518,11 @@ static bool __init retpoline_safe(uint64_t caps)
     case 0x4d: /* Avaton / Rangely (Silvermont) */
     case 0x4c: /* Cherrytrail / Brasswell */
     case 0x4a: /* Merrifield */
+    case 0x57: /* Knights Landing */
     case 0x5a: /* Moorefield */
     case 0x5c: /* Goldmont */
     case 0x5f: /* Denverton */
+    case 0x85: /* Knights Mill */
         return true;
 
     default:
--
generated by git-patchbot for /home/xen/git/xen.git#stable-4.12

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