linux-kernel - Re: [PATCH 14/34] x86, pkeys: add functions to fetch PKRU

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Message-ID: <alpine.DEB.2.11.1512081617250.3595@nanos>
Date:	Tue, 8 Dec 2015 16:18:18 +0100 (CET)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Dave Hansen <dave@...1.net>
cc:	linux-kernel@...r.kernel.org, linux-mm@...ck.org, x86@...nel.org,
	dave.hansen@...ux.intel.com
Subject: Re: [PATCH 14/34] x86, pkeys: add functions to fetch PKRU

On Thu, 3 Dec 2015, Dave Hansen wrote:
> +#ifdef CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS
> +static inline u32 __read_pkru(void)
> +{
> +	unsigned int ecx = 0;
> +	unsigned int edx, pkru;

  	u32 please.

Other than that: Reviewed-by: Thomas Gleixner <tglx@...utronix.de>

> +
> +	/*
> +	 * "rdpkru" instruction.  Places PKRU contents in to EAX,
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