From: Arjan van de Ven <arjan@linux.intel.com>
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
Date: Fri, 03 Sep 2010 06:53:59 -0700 [thread overview]
Message-ID: <4C80FDF7.1080106@linux.intel.com> (raw)
In-Reply-To: <1283505227.1783.224.camel@laptop>
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) ?
next prev parent reply other threads:[~2010-09-03 13:54 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-03 9:13 [PATCH] perf, x86: Disable perf if the BIOS got its grubby paws on the PMU Peter Zijlstra
2010-09-03 13:53 ` Arjan van de Ven [this message]
2010-09-03 14:32 ` Matt Domsch
2010-09-03 14:46 ` Peter Zijlstra
2010-09-07 15:15 ` Robert Richter
2010-09-07 16:51 ` Robert Richter
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