linux-kernel - Re: [PATCH 3/4] x86: add desc_equal() to compare GDT descriptors

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Message-ID: <20120711192101.GA10062@phenom.dumpdata.com>
Date:	Wed, 11 Jul 2012 15:21:01 -0400
From:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
To:	David Vrabel <david.vrabel@...rix.com>
Cc:	xen-devel@...ts.xensource.com, x86@...nel.org,
	"H. Peter Anvin" <hpa@...or.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/4] x86: add desc_equal() to compare GDT descriptors

On Mon, Jul 09, 2012 at 11:39:07AM +0100, David Vrabel wrote:
> From: David Vrabel <david.vrabel@...rix.com>
> 
> Signed-off-by: David Vrabel <david.vrabel@...rix.com>

Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>

> ---
>  arch/x86/include/asm/desc.h |    6 ++++++
>  1 files changed, 6 insertions(+), 0 deletions(-)
> 
> diff --git a/arch/x86/include/asm/desc.h b/arch/x86/include/asm/desc.h
> index 8bf1c06..d26f059 100644
> --- a/arch/x86/include/asm/desc.h
> +++ b/arch/x86/include/asm/desc.h
> @@ -85,6 +85,12 @@ static inline int desc_empty(const void *ptr)
>  	return !(desc[0] | desc[1]);
>  }
>  
> +static inline bool desc_equal(const struct desc_struct *d1,
> +			      const struct desc_struct *d2)
> +{
> +	return d1->a == d2->a && d1->b == d2->b;
> +}
> +
>  #ifdef CONFIG_PARAVIRT
>  #include <asm/paravirt.h>
>  #else
> -- 
> 1.7.2.5
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