From mboxrd@z Thu Jan  1 00:00:00 1970
From: Keir Fraser <keir.xen@gmail.com>
Subject: Re: [PATCH] x86: also allow disabling LAPIC NMI
 watchdog on newer CPUs
Date: Wed, 01 Aug 2012 16:22:48 +0100
Message-ID: <CC3F0858.3A2BC%keir.xen@gmail.com>
References: <501938070200007800091E24@nat28.tlf.novell.com>
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To: Jan Beulich <JBeulich@suse.com>, xen-devel <xen-devel@lists.xen.org>
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On 01/08/2012 13:07, "Jan Beulich" <JBeulich@suse.com> wrote:

> This complements c/s 9146:941897e98591, and also replaces a literal
> zero with a proper manifest constant.
> 
> Signed-off-by: Jan Beulich <jbeulich@suse.com>

Acked-by: Keir Fraser <keir@xen.org>

> --- a/xen/arch/x86/nmi.c
> +++ b/xen/arch/x86/nmi.c
> @@ -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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