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Message-ID: <4C80FDF7.1080106@linux.intel.com>
Date: Fri, 03 Sep 2010 06:53:59 -0700
From: Arjan van de Ven <arjan@linux.intel.com>
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To: Peter Zijlstra <peterz@infradead.org>
CC: Ingo Molnar <mingo@elte.hu>, Stephane Eranian <eranian@google.com>,
        "robert.richter" <robert.richter@amd.com>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        LKML <linux-kernel@vger.kernel.org>,
        "H. Peter Anvin" <hpa@linux.kernel.org>
Subject: Re: [PATCH] perf, x86: Disable perf if the BIOS got its grubby paws
 on the PMU
References: <1283505227.1783.224.camel@laptop>
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On 9/3/2010 2:13 AM, Peter Zijlstra wrote:
>
> +static void print_BIOS_fail(void)
> +{
> +	printk(KERN_ERR "\n");
> +	printk(KERN_ERR "=============================================\n");
> +	printk(KERN_ERR "It appears the BIOS is actively using the PMU\n");
> +	printk(KERN_ERR "this avoids Linux from using it, please de-  \n");
> +	printk(KERN_ERR "activate this BIOS feature or request a BIOS \n");
> +	printk(KERN_ERR "update from your vendor.                     \n");
> +	printk(KERN_ERR "=============================================\n");
> +
> +	memset(&x86_pmu, 0, sizeof(x86_pmu));
> +}
> +
>    


tell us how you really feel :-)

do you want to add a phone number of the support line of the vendor 
(based on DMI data of course) ?