Re: excessive MSR print out during boot.

From: Dave Jones
Date: Thu Mar 22 2012 - 23:53:17 EST


On Thu, Mar 22, 2012 at 07:16:24PM -0700, Yinghai Lu wrote:
> On Thu, Mar 22, 2012 at 7:00 PM, Dave Jones <davej@xxxxxxxxxx> wrote:
> > During bootup, I now have 162 messages like this..
> >
> > [    0.227346]  MSR0000001b: 00000000fee00900
> > [    0.227465]  MSR00000021: 0000000000000001
> > [    0.227584]  MSR0000002a: 00000000c1c81400
> >
> > commit 21c3fcf3e39353d4f21d50e257cc74f3204b1988 looks suspect.
> > It claims that it will only print these out if show_msr= is passed,
> > but that doesn't seem to be the case.
>
> sorry abut that.
>
> please check attached patch.
>
> Thanks
>
> Yinghai

> diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
> index ade9c79..b240323 100644
> --- a/arch/x86/kernel/cpu/common.c
> +++ b/arch/x86/kernel/cpu/common.c
> @@ -998,7 +998,7 @@ void __cpuinit print_cpu_info(struct cpuinfo_x86 *c)
> else
> printk(KERN_CONT "\n");
>
> - __print_cpu_msr();
> + print_cpu_msr(c);
> }
>
> void __cpuinit print_cpu_msr(struct cpuinfo_x86 *c)

Looks like that did the trick, thanks!

Tested-by: Dave Jones <davej@xxxxxxxxxx>

Dave
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