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Date: Thu, 20 Oct 2011 17:06:05 +0200
From: Borislav Petkov <bp@amd64.org>
To: David Rientjes <rientjes@google.com>
Cc: EDAC devel <linux-edac@vger.kernel.org>, Tony Luck <tony.luck@intel.com>,
        Ingo Molnar <mingo@elte.hu>, X86-ML <x86@kernel.org>,
        LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 8/9] x86, RAS: Add attributes needed for HW injection
Message-ID: <20111020150605.GH12080@aftab>
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On Wed, Oct 19, 2011 at 05:19:06PM -0400, David Rientjes wrote:
> On Wed, 19 Oct 2011, Borislav Petkov wrote:
> 
> > > That wouldn't catch an offline cpuid, you probably want cpu_online(val)?
> > 
> > Good catch, thanks.
> > 
> > So I'm looking at <arch/x86/kernel/cpuid.c> which is how the validity of
> > a cpu value should be tested properly, IMHO:
> > 
> > static int cpuid_open(struct inode *inode, struct file *file)
> > {
> > 	...
> > 
> > 	if (cpu >= nr_cpu_ids || !cpu_online(cpu))
> > 		return -ENXIO;	/* No such CPU */
> > 	...
> 
> Right, the comment for cpumask_test_cpu(), which cpu_online() really is, 
> wants a cpu < nr_cpu_ids.

Fixed, thanks.

-- 
Regards/Gruss,
Boris.

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