[Xen-changelog] [xen-unstable] x86: also allow disabling LAPIC NMI watchdog on newer CPUs

[Xen patchbot-unstable <patchbot@xxxxxxx>]

# HG changeset patch
# User Jan Beulich <jbeulich@xxxxxxxx>
# Date 1343900977 -7200
# Node ID 3d17148e465ce87ddd8f555a001280348d848419
# Parent  619c4298f055f4e4b4c82b5d703acaf344f8bc62
x86: also allow disabling LAPIC NMI watchdog on newer CPUs

This complements c/s 9146:941897e98591, and also replaces a literal
zero with a proper manifest constant.

Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
Acked-by: Keir Fraser <keir@xxxxxxx>
---


diff -r 619c4298f055 -r 3d17148e465c xen/arch/x86/nmi.c
--- a/xen/arch/x86/nmi.c        Thu Aug 02 10:46:02 2012 +0100
+++ b/xen/arch/x86/nmi.c        Thu Aug 02 11:49:37 2012 +0200
@@ -175,15 +175,9 @@ static void disable_lapic_nmi_watchdog(v
     case X86_VENDOR_INTEL:
         switch (boot_cpu_data.x86) {
         case 6:
-            if (boot_cpu_data.x86_model > 0xd)
-                break;
-
             wrmsr(MSR_P6_EVNTSEL0, 0, 0);
             break;
         case 15:
-            if (boot_cpu_data.x86_model > 0x4)
-                break;
-
             wrmsr(MSR_P4_IQ_CCCR0, 0, 0);
             wrmsr(MSR_P4_CRU_ESCR0, 0, 0);
             break;
@@ -192,7 +186,7 @@ static void disable_lapic_nmi_watchdog(v
     }
     nmi_active = -1;
     /* tell do_nmi() and others that we're not active any more */
-    nmi_watchdog = 0;
+    nmi_watchdog = NMI_NONE;
 }
 
 static void enable_lapic_nmi_watchdog(void)

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