[Xen-devel] [PATCH] x86/mwait-idle: add Gemini Lake support

["Jan Beulich" <JBeulich@xxxxxxxx>]

From: David E. Box <david.e.box@xxxxxxxxxxxxxxx>

Gemini Lake uses the same C-states as Broxton and also uses the
IRTL MSR's to determine maximum C-state latency.

Signed-off-by: David E. Box <david.e.box@xxxxxxxxxxxxxxx>
Acked-by: Len Brown <len.brown@xxxxxxxxx>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
[Linux commit 1b2e87687d3f951a66900cab6f1583d94099d2f7]
Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>

--- a/xen/arch/x86/cpu/mwait-idle.c
+++ b/xen/arch/x86/cpu/mwait-idle.c
@@ -957,6 +957,7 @@ static const struct x86_cpu_id intel_idl
        ICPU(0x57, knl),
        ICPU(0x85, knl),
        ICPU(0x5c, bxt),
+       ICPU(0x7a, bxt),
        ICPU(0x5f, dnv),
        {}
 };
@@ -1102,6 +1103,7 @@ static void __init mwait_idle_state_tabl
                ivt_idle_state_table_update();
                break;
        case 0x5c: /* BXT */
+       case 0x7a:
                bxt_idle_state_table_update();
                break;
        case 0x5e: /* SKL-H */




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