Date: Wed, 26 Feb 2014 14:18:52 +0100
From: Borislav Petkov <bp@alien8.de>
To: Chris Bainbridge <chris.bainbridge@gmail.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>, davej@redhat.com, x86@kernel.org,
        linux-kernel@vger.kernel.org
Subject: Re: [PATCH] x86: set Pentium M as PAE capable
Message-ID: <20140226131852.GA22690@pd.tnic>
References: <20140225060146.GA4339@debian.local>
 <530C7465.2080600@zytor.com>
 <20140225162611.GA31902@redhat.com>
 <530CCFD2.3050007@zytor.com>
 <20140226121256.GA8494@debian.local>
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On Wed, Feb 26, 2014 at 07:12:59PM +0700, Chris Bainbridge wrote:
> @@ -226,6 +234,15 @@ static void intel_workarounds(struct cpuinfo_x86 *c)
>  		clear_cpu_cap(c, X86_FEATURE_SEP);
>  
>  	/*
> +	 * PAE CPUID bug: Pentium M reports no PAE but has PAE
> +	 */
> +	if (forcepae) {
> +		printk(KERN_WARNING "PAE forced!\n");
> +		set_cpu_cap(c, X86_FEATURE_PAE);
> +		add_taint(TAINT_MACHINE_CHECK, LOCKDEP_NOW_UNRELIABLE);

This is certainly the wrong taint flag. We'd need a new one or to
repurpose another one as I suggested in a previous mail.

-- 
Regards/Gruss,
    Boris.

Sent from a fat crate under my desk. Formatting is fine.
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