linux-kernel - Re: [RFC PATCH 2/6] x86/cpu: Factor out application of forced cpu caps

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Date:   Tue, 6 Dec 2016 09:32:46 +0100
From:   Borislav Petkov <bp@...en8.de>
To:     Andy Lutomirski <luto@...nel.org>
Cc:     x86@...nel.org, One Thousand Gnomes <gnomes@...rguk.ukuu.org.uk>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Brian Gerst <brgerst@...il.com>,
        Matthew Whitehead <tedheadster@...il.com>
Subject: Re: [RFC PATCH 2/6] x86/cpu: Factor out application of forced cpu
 caps

On Mon, Dec 05, 2016 at 05:01:11PM -0800, Andy Lutomirski wrote:
> There are multiple call sites that apply forced CPU caps.  Factor
> them into a helper.
> 
> Signed-off-by: Andy Lutomirski <luto@...nel.org>
> ---
>  arch/x86/kernel/cpu/common.c | 21 +++++++++++++--------
>  1 file changed, 13 insertions(+), 8 deletions(-)
> 
> diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
> index 37f031f39e27..347ae0a19380 100644
> --- a/arch/x86/kernel/cpu/common.c
> +++ b/arch/x86/kernel/cpu/common.c
> @@ -655,6 +655,17 @@ void cpu_detect(struct cpuinfo_x86 *c)
>  	}
>  }
>  
> +static void apply_forced_caps(struct cpuinfo_x86 *c)
> +{
> +	int i;
> +
> +	for (i = 0; i < NCAPINTS; i++) {
> +		c->x86_capability[i] &= ~cpu_caps_cleared[i];
> +		c->x86_capability[i] |= cpu_caps_set[i];
> +	}
> +

Superfluous newline.

> +}

-- 
Regards/Gruss,
    Boris.

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