linux-kernel - Re: [RFC PATCH 1/3] x86/cpu: Unify CPU family, model, stepping calculation

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Date:	Wed, 18 Nov 2015 12:28:46 +0100
From:	Borislav Petkov <bp@...en8.de>
To:	Paolo Bonzini <pbonzini@...hat.com>
Cc:	LKML <linux-kernel@...r.kernel.org>, X86 ML <x86@...nel.org>,
	KVM <kvm@...r.kernel.org>
Subject: Re: [RFC PATCH 1/3] x86/cpu: Unify CPU family, model, stepping
 calculation

On Wed, Nov 18, 2015 at 12:10:08PM +0100, Paolo Bonzini wrote:
> On 14/11/2015 11:37, Borislav Petkov wrote:
> >  	vendor = x86_vendor();
> > -	family = x86_family();
> > +	family = x86_family_cpuid();
> 
> What about renaming x86_vendor() so that this looks like
> 
> -	vendor = x86_vendor();
> -	family = x86_family();
> +	vendor = x86_cpuid_vendor();
> +	family = x86_cpuid_family();

The idea is that x86_family_cpuid() gives the family *after* having
executed CPUID while x86_family() only computes the family from a
supplied CPUID_1_EAX. I.e., the last saves us the CPUID call.

Hmm, maybe I should make that more clear ...

-- 
Regards/Gruss,
    Boris.

ECO tip #101: Trim your mails when you reply.
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